This file is indexed.

/usr/share/doc/swish-e/html/swish-config.html is in swish-e 2.4.7-5ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<!-- 
    ***** GENERATED FILE *** DO NOT EDIT DIRECTLY - any changes will be LOST ******

    swish-e.org mockup based on http://www.oswd.org/design/1773/prosimii/index2.html 
-->


<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en-US">
  <head>
    <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
    <link rel="stylesheet" type="text/css" href="./swish.css" media="screen" title="swish css" />
    <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon" />

    
        <link rel="Last" href="./filter.html" />
    
        <link rel="Prev" href="./changes.html" />
    
        <link rel="Up" href="./index.html" />
    
        <link rel="Next" href="./swish-run.html" />
    
        <link rel="Start" href="./index.html" />
    
        <link rel="First" href="./readme.html" />
    

    <title>Swish-e :: SWISH-CONFIG - Configuration File Directives</title>


  </head>


<body>
    

    <!-- noindex -->

    <!-- For non-visual user agents: -->
      <div id="top"><a href="#main-copy" class="doNotDisplay doNotPrint">Skip to main content.</a></div>

    <!-- ##### Header ##### -->

    <div id="header">
      <div class="superHeader">
        <span>Related Sites:</span>
            <a href="http://swishewiki.org/" title="swishe wiki">swish-e wiki</a> |
            <a href="http://www.xmlsoft.org/" title="libxml2 home page">libxml2</a> |
            <a href="http://www.zlib.net/" title="zlib home page">zlib</a> |
            <a href="http://www.foolabs.com/xpdf/" title="xpdf home page">xpdf</a> |
            <a href="http://dev.swish-e.org/browser" title="browse source code">Subversion</a>
      </div>

      <div class="midHeader">
        <h1 class="headerTitle" lang="la">Swish-e</h1>
        <div class="headerSubTitle">Simple Web Indexing System for Humans - Enhanced</div>

        <br class="doNotDisplay doNotPrint" />

        <div class="headerLinks">
          <span class="doNotDisplay">Tools:</span>

              <!-- don't know what platform, so link to download page -->

              <a href="http://swish-e.org/download/index.html">download latest version</a>

        </div>
      </div>
    </div>
    <!-- index -->

<!-- noindex -->
<div class="subHeader">
    <table width='100%'>
        <tr>
            <td align='left'>
                <a href="http://swish-e.org/index.html">home</a> |
                <a href="http://swish-e.org/support.html">support</a> |
                <a href="http://swish-e.org/download/index.html">download</a>
            </td>


            
            <td align='right'>

                <form method="get"
                    action="http://swish-e.org/search/index.html"
                    enctype="application/x-www-form-urlencoded"
                    class="srchform">

                    <label for="searchfield">Search for</label>
                    <input maxlength="200" value="" id="searchfield" size="30" name="query" type="text" alt="Search input field" />
                    <input value="search swish-e.org" name="submit" type="submit" class='button' />
                </form>

            </td>
            
        </tr>
    </table>
</div>
<!-- index -->


<div id="body-area" class="clearfix">

    <div id="content-area">

        <div id="main-copy">
            
            
            
            
<h1>SWISH-CONFIG - Configuration File Directives</h1>
Swish-e version 2.4.7



    <!-- noindex -->

    
        <h2>Table of Contents</h2>
        <div class="toc">
            
    <ul class="toc">
        
            <li>
                <a href="#overview">OVERVIEW</a>
                
            </li>
        
            <li>
                <a href="#configuration_file">CONFIGURATION FILE</a>
                
    <ul class="toc">
        
            <li>
                <a href="#alphabetical_listing_of_directives">Alphabetical Listing of Directives</a>
                
            </li>
        
            <li>
                <a href="#directives_that_control_swish">Directives that Control Swish</a>
                
            </li>
        
            <li>
                <a href="#administrative_headers_directives">Administrative Headers Directives</a>
                
            </li>
        
            <li>
                <a href="#document_source_directives">Document Source Directives</a>
                
            </li>
        
            <li>
                <a href="#document_contents_directives">Document Contents Directives</a>
                
            </li>
        
            <li>
                <a href="#directives_for_the_file_access_method_only">Directives for the File Access method only</a>
                
            </li>
        
            <li>
                <a href="#directives_for_the_http_access_method_only">Directives for the HTTP Access Method Only</a>
                
            </li>
        
            <li>
                <a href="#directives_for_the_prog_access_method_only">Directives for the prog Access Method Only</a>
                
            </li>
        
            <li>
                <a href="#document_filter_directives">Document Filter Directives</a>
                
    <ul class="toc">
        
            <li>
                <a href="#filtering_with_swish_filter">Filtering with SWISH::Filter</a>
                
            </li>
        
            <li>
                <a href="#filtering_with_the_filefilter_feature">Filtering with the FileFilter feature</a>
                
            </li>
        
    </ul>

            </li>
        
    </ul>

            </li>
        
            <li>
                <a href="#document_info">Document Info</a>
                
            </li>
        
    </ul>

        </div>
    
    <!-- index -->





<hr />


    <div class="sub-section">
        
<h1><a name="overview"></a>OVERVIEW</h1>

<p>This document lists the available configuration directives available in
Swish-e.</p>

    </div>

    <div class="sub-section">
        
<h1><a name="configuration_file"></a>CONFIGURATION FILE</h1>

<p>What files Swish-e indexes and how they are indexed, and where the index
is written can be controlled by a configuration file.</p>
<p>The configuration file is a text file composed of comments, blank
lines, and <b>configuration directives</b>.  The order of the directives
is not important.  Some directives may be used more than once in the
configuration file, while others can only be used once (e.g. additional
directives will overwrite preceding directives).  Case of the directive
is not important -- you may use upper, lower, or mixed case.</p>
<p>Comments are any line that begin with a "#".</p>
<pre class="pre-section">    # This is a comment</pre>
<p>As of 2.4.3 lines may be continued by placing a backslas as the last character
on the line:</p>
<pre class="pre-section">    IgnoreWords \
        am \
        the \
        foo</pre>
<p>Directives may take more than one parameter.  Enclose single parameters
that include whitespace in quotes (single or double).  Inside of quotes
the backslash escapes the next character.</p>
<pre class="pre-section">    ReplaceRules append "foo bar"   &lt;- define "foo bar" as a single parameter</pre>
<p>If you need to include a quote character in the value either use a
backslash to escape it, or enclose it in quotes of the other type.</p>
<p>Backslashes also have special meaning in regular expressions.</p>
<pre class="pre-section">    FileFilterMatch pdftotext "'%p' -" /\.pdf$/</pre>
<p>This says that the dot is a real dot (instead of matching any character).
If you place the regular expression in quotes then you must use
double-backslashes.</p>
<pre class="pre-section">    FileFilterMatch pdftotext "'%p' -" "/\\.pdf$/"</pre>
<p>Swish-e will convert the double backslash into a single backslash before
passing the parameter to the regular expression compiler.</p>
<p>Commented example configuration files are included in the <i>conf</i>
directory of the Swish-e distribution.</p>
<p>Some command line arguments can override directives specified in the
configuration file.  Please see also the <a href="swish-run.html">SWISH-RUN</a> for
instructions on running Swish-e, and the <a href="swish-search.html">SWISH-SEARCH</a> page for
information and examples on how to search your index.</p>
<p>The configuration file is specified to Swish-e by the <code>-c</code> switch.  For
example,</p>
<pre class="pre-section">    swish-e -c myconfig.conf</pre>
<p>You may also split your directives up into different configuration files.  This
allows you to have a master configuration file used for many different indexes,
and smaller configuration files for each separate index.  You can specify the
different configuration files when running from the command line with the <code>-c</code>
switch (see <a href="swish-run.html">SWISH-RUN</a>), or you may include other Configuration
file with the <b>IncludeConfigFile</b> directive below.</p>
<p>Typically, in a configuration file the directives are grouped together in
some logical order -- that is, directives that control the source of the
documents would be grouped together first, and directives that control
how each document is filtered or its words index in another group of
directives. (The directives listed below are grouped in this order).</p>
<p>The configuration file directives are listed below in these groups:    </p>
<ul>
<li>
<p><a href="#administrative_headers_directives">Administrative Headers Directives</a> -- You may add administrative
information to the header of the index file.</p>
</li>
<li>
<p><a href="#document_source_directives">Document Source Directives</a> -- Directives for selecting the source
documents and the location of the index file.</p>
</li>
<li>
<p><a href="#document_contents_directives">Document Contents Directives</a> -- Directives that control how a document
content is indexed.</p>
</li>
<li>
<p><a href="#directives_for_the_file_access_method_only">Directives for the File Access method only</a> -- These directives are only
applicable to the File Access indexing method.</p>
</li>
<li>
<p><a href="#directives_for_the_http_access_method_only">Directives for the HTTP Access Method Only</a> -- Likewise, these only apply
to the HTTP Access method.</p>
</li>
<li>
<p><a href="#directives_for_the_prog_access_method_only">Directives for the prog Access Method Only</a> -- These only apply to the prog
Access method.</p>
</li>
<li>
<p><a href="#document_filter_directives">Document Filter Directives</a> -- This is a special section that describes
using document filters with Swish-e.</p>
</li>
</ul>

    </div>

    <div class="sub-section">
        
<h2><a name="alphabetical_listing_of_directives"></a>Alphabetical Listing of Directives</h2>

<ul>
<li>
<p><a href="#absolutelinks">AbsoluteLinks</a> [yes|NO]</p>
</li>
<li>
<p><a href="#begincharacters">BeginCharacters</a> *string of characters*</p>
</li>
<li>
<p><a href="#bumppositioncountercharacters">BumpPositionCounterCharacters</a> *string*</p>
</li>
<li>
<p><a href="#buzzwords">Buzzwords</a> [*list of buzzwords*|File: path]</p>
</li>
<li>
<p><a href="#compresspositions">CompressPositions</a>  [yes|NO]</p>
</li>
<li>
<p><a href="#converthtmlentities">ConvertHTMLEntities</a> [YES|no]</p>
</li>
<li>
<p><a href="#defaultcontents">DefaultContents</a> [TXT|HTML|XML|TXT2|HTML2|XML2|TXT*|HTML*|XML*]</p>
</li>
<li>
<p><a href="#delay">Delay</a> *seconds*</p>
</li>
<li>
<p><a href="#dontbumppositiononendtags">DontBumpPositionOnEndTags</a> *list of names*</p>
</li>
<li>
<p><a href="#dontbumppositiononstarttags">DontBumpPositionOnStartTags</a> *list of names*</p>
</li>
<li>
<p><a href="#enablealtsearchsyntax">EnableAltSearchSyntax</a>  [yes|NO]</p>
</li>
<li>
<p><a href="#endcharacters">EndCharacters</a> *string of characters*</p>
</li>
<li>
<p><a href="#equivalentserver">EquivalentServer</a> *server alias*</p>
</li>
<li>
<p><a href="#extractpath">ExtractPath</a> *metaname* [replace|remove|prepend|append|regex]</p>
</li>
<li>
<p><a href="#filefilter">FileFilter</a> *suffix* *program* [options]</p>
</li>
<li>
<p><a href="#filefiltermatch">FileFilterMatch</a> *program* *options* *regex* [*regex* ...]</p>
</li>
<li>
<p><a href="#fileinfocompression">FileInfoCompression</a> [yes|NO]</p>
</li>
<li>
<p><a href="#filematch">FileMatch</a> [contains|is|regex] *regular expression*</p>
</li>
<li>
<p><a href="#filerules">FileRules</a> [contains|is|regex] *regular expression*</p>
</li>
<li>
<p><a href="#fuzzyindexingmode">FuzzyIndexingMode</a> [NONE|Stemming|Soundex|Metaphone|DoubleMetaphone]</p>
</li>
<li>
<p><a href="#followsymlinks">FollowSymLinks</a> [yes|NO]</p>
</li>
<li>
<p><a href="#htmllinksmetaname">HTMLLinksMetaName</a> *metaname*</p>
</li>
<li>
<p><a href="#ignorefirstchar">IgnoreFirstChar</a> *string of characters*</p>
</li>
<li>
<p><a href="#ignorelastchar">IgnoreLastChar</a> *string of characters*</p>
</li>
<li>
<p><a href="#ignorelimit">IgnoreLimit</a> *integer integer*</p>
</li>
<li>
<p><a href="#ignoremetatags">IgnoreMetaTags</a> *list of names*</p>
</li>
<li>
<p><a href="#ignorenumberchars">IgnoreNumberChars</a> *list of characters*</p>
</li>
<li>
<p><a href="#ignoretotalwordcountwhenranking">IgnoreTotalWordCountWhenRanking</a> [YES|no]</p>
</li>
<li>
<p><a href="#ignorewords">IgnoreWords</a> [*list of stop words*|File: path]</p>
</li>
<li>
<p><a href="#imagelinksmetaname">ImageLinksMetaName</a> *metaname*</p>
</li>
<li>
<p><a href="#includeconfigfile">IncludeConfigFile</a></p>
</li>
<li>
<p><a href="#indexadmin">IndexAdmin</a> *text*</p>
</li>
<li>
<p><a href="#indexalttagmetaname">IndexAltTagMetaName</a> *tagname*|as-text</p>
</li>
<li>
<p><a href="#indexcomments">IndexComments</a> [yes|NO]</p>
</li>
<li>
<p><a href="#indexcontents">IndexContents</a> [TXT|HTML|XML|TXT2|HTML2|XML2|TXT*|HTML*|XML*]  *file
extensions*</p>
</li>
<li>
<p><a href="#indexdescription">IndexDescription</a> *text*</p>
</li>
<li>
<p><a href="#indexdir">IndexDir</a> [URL|directories or files]</p>
</li>
<li>
<p><a href="#indexfile">IndexFile</a> *path*</p>
</li>
<li>
<p><a href="#indexname">IndexName</a> *text*</p>
</li>
<li>
<p><a href="#indexonly">IndexOnly</a> *list of file suffixes*</p>
</li>
<li>
<p><a href="#indexpointer">IndexPointer</a> *text*</p>
</li>
<li>
<p><a href="#indexreport">IndexReport</a> [0|1|2|3]</p>
</li>
<li>
<p><a href="#maxdepth">MaxDepth</a> *integer*</p>
</li>
<li>
<p><a href="#maxwordlimit">MaxWordLimit</a> *integer*</p>
</li>
<li>
<p><a href="#metanamealias">MetaNameAlias</a> *meta name* *list of aliases*</p>
</li>
<li>
<p><a href="#metanames">MetaNames</a> *list of names*</p>
</li>
<li>
<p><a href="#minwordlimit">MinWordLimit</a> *integer*</p>
</li>
<li>
<p><a href="#nocontents">NoContents</a> *list of file suffixes*</p>
</li>
<li>
<p><a href="#obeyrobotsnoindex">obeyRobotsNoIndex</a> [yes|NO]</p>
</li>
<li>
<p><a href="#parserwarnlevel">ParserWarnLevel</a> [0|1|2|3]</p>
</li>
<li>
<p><a href="#presortedindex">PreSortedIndex</a> *list of property names*</p>
</li>
<li>
<p><a href="#propcompressionlevel">PropCompressionLevel</a> [0-9]</p>
</li>
<li>
<p><a href="#propertynamealias">PropertyNameAlias</a> *property name* *list of aliases*</p>
</li>
<li>
<p><a href="#propertynames">PropertyNames</a> *list of meta names*</p>
</li>
<li>
<p><a href="#propertynamescomparecase">PropertyNamesCompareCase</a> *list of meta names*</p>
</li>
<li>
<p><a href="#propertynamesignorecase">PropertyNamesIgnoreCase</a> *list of meta names*</p>
</li>
<li>
<p><a href="#propertynamesnostripchars">PropertyNamesNoStripChars</a> *list of meta names*</p>
</li>
<li>
<p><a href="#propertynamesdate">PropertyNamesDate</a> *list of meta names*</p>
</li>
<li>
<p><a href="#propertynamesnumeric">PropertyNamesNumeric</a> *list of meta names*</p>
</li>
<li>
<p><a href="#propertynamesmaxlength">PropertyNamesMaxLength</a> integer *list of meta names*</p>
</li>
<li>
<p><a href="#propertynamessortkeylength">PropertyNamesSortKeyLength</a> integer *list of meta names*</p>
</li>
<li>
<p><a href="#replacerules">ReplaceRules</a> [replace|remove|prepend|append|regex]</p>
</li>
<li>
<p><a href="#resultextformatname">ResultExtFormatName</a>  name -x format string</p>
</li>
<li>
<p><a href="#spiderdirectory">SpiderDirectory</a> *path*</p>
</li>
<li>
<p><a href="#storedescription">StoreDescription</a> [XML &lt;tag&gt;|HTML &lt;meta&gt;|TXT size]</p>
</li>
<li>
<p><a href="#swishprogparameters">"SwishProgParameters</a> *list of parameters*</p>
</li>
<li>
<p><a href="#swishsearchdefaultrule">SwishSearchDefaultRule</a>   [&lt;AND-WORD&gt;|&lt;or-word&gt;]</p>
</li>
<li>
<p><a href="#tmpdir">TmpDir</a> *path*</p>
</li>
<li>
<p><a href="#translatecharacters">TranslateCharacters</a> [*string1 string2*|:ascii7:]</p>
</li>
<li>
<p><a href="#truncatedocsize">TruncateDocSize</a> *number of characters*</p>
</li>
<li>
<p><a href="#undefinedmetatags">UndefinedMetaTags</a> [error|ignore|INDEX|auto]</p>
</li>
<li>
<p><a href="#undefinedxmlattributes">UndefinedXMLAttributes</a> [DISABLE|error|ignore|index|auto]</p>
</li>
<li>
<p><a href="#usestemming">UseStemming</a> [yes|NO]</p>
</li>
<li>
<p><a href="#usesoundex">UseSoundex</a> [yes|NO]</p>
</li>
<li>
<p><a href="#usewords">UseWords</a> [*list of words*|File: path]</p>
</li>
<li>
<p><a href="#wordcharacters">WordCharacters</a> *string of characters*</p>
</li>
<li>
<p><a href="#xmlclassattributes">XMLClassAttributes</a> *list of XML attribute names*</p>
</li>
</ul>

    </div>

    <div class="sub-section">
        
<h2><a name="directives_that_control_swish"></a>Directives that Control Swish</h2>

<p>These configuration directives control the general behavior of Swish-e.</p>
<ul>
<li><a name="item_includeconfigfile"></a><a name="includeconfigfile"></a><b>IncludeConfigFile *path to config file*</b>
<p>This directive can be used to include configuration directives located
in another file.</p>
<pre class="pre-section">    IncludeConfigFile /usr/local/swish/conf/site_config.config</pre>
</li>
<li><a name="item_indexreport"></a><a name="indexreport"></a><b>IndexReport [0|1|2|3]</b>
<p>This is how detailed you want reporting while indexing. You can specify
numbers 0 to 3.  0 is totally silent, 3 is the most verbose.   The default
is 1.</p>
<p>This may be overridden from the command line via the <code>-v</code> switch (see
<a href="swish-run.html">SWISH-RUN</a>).</p>
</li>
<li><a name="item_parserwarnlevel"></a><a name="parserwarnlevel"></a><b>ParserWarnLevel [0|1|2|3]</b>
<p>Sets the error level when using the libxml2 parser for XML and HTML.
libxml2 will point out structural errors in your documents.</p>
<pre class="pre-section">    0 = no report
    1 = fatal errors
    2 = errors
    3 = warnings</pre>
<p>Currently (as of 2.4.4 - early 2005) libxml2 only reports errors at level 2.
The default as of 2.4.4 is "2" which should report any errors that might indicate
a problem parsing a document.</p>
<p>The exception to this is UTF-8 to Latin-1 conversion errors are reported at
level 3 (changed from 1 in 2.4.4).  Although these errors indicate a problem indexing
text, they are only reported at level 3 because they can be very common.</p>
<p>It is recommended that you index at ParserWarnLevel 3 when first starting out to see
what errors and warnings are reported.  Then reduce the level when you understand what
documents are causing parsing problems and why.</p>
</li>
<li><a name="item_indexfile"></a><a name="indexfile"></a><b>IndexFile *path*</b>
<p>Index file specifies the location of the generated index file.  If not
specified, Swish-e will create the file <i>index.swish-e</i> in the current
directory.</p>
<pre class="pre-section">    IndexFile /usr/local/swish/site.index</pre>
</li>
<li><a name="item_obeyrobotsnoindex"></a><a name="obeyrobotsnoindex"></a><b>obeyRobotsNoIndex [yes|NO]</b>
<p>When enabled, Swish-e will not index any HTML file that contains:</p>
<pre class="pre-section">    &lt;meta name="robots" content="noindex"&gt;</pre>
<p>The default is to ignore these meta tags and index the document.
This tag is described at <a href="http://www.robotstxt.org/wc/exclusion.html">http://www.robotstxt.org/wc/exclusion.html</a>.</p>
<p>Note: This feature is only available with the libxml2 HTML parser.</p>
<p>Also, if you are using the libxml2 parser (HTML2 and XML2) then you can use the following
comments in your documents to prevent indexing:</p>
<pre class="pre-section">       &lt;!-- SwishCommand noindex --&gt;
       &lt;!-- SwishCommand index --&gt;</pre>
<p>and/or these may be used also:</p>
<pre class="pre-section">       &lt;!-- noindex --&gt;
       &lt;!-- index --&gt;</pre>
<p>For example, these are very helpful to prevent indexing of common headers, footers, and menus.</p>
</li>
</ul>
<p><b>NOTE</b>: This following items are currently not available.  These items
require Swish-e to parse the configuration file while searching.</p>
<ul>
<li><a name="item_enablealtsearchsyntax"></a><a name="enablealtsearchsyntax"></a><b>EnableAltSearchSyntax [yes|NO]</b>
<p><b>NOTE</b>: This following item is currently not available.</p>
<p>Enable alternate search syntax.  Allows the usage of a basic
"Altavista(c)", "Lycos(c)", etc. like search syntax.  This means a search
query can contain "+" and "-" as syntax parameter.</p>
<p>Example:</p>
<pre class="pre-section">    swish-e -w "+word1 +word2 -word3  word4 word5"
    "+"  = following word has to be in all found documents
    "-"  = following word may not be in any document found
    " "  = following word will be searched in documents</pre>
</li>
<li><a name="item_swishsearhoperators"></a><a name="swishsearhoperators"></a><b>SwishSearhOperators &lt;and-word&gt; &lt;or-word&gt; &lt;not-word&gt;</b>
<p><b>NOTE</b>: This following item is currently not available.</p>
<p>Using this config directive you can change the boolean search operators of
Swish-e, e.g. to adapt these to your language.
The default is:    AND  OR  NOT</p>
<p>Example (german):</p>
<pre class="pre-section">    SwishSearchOperators   UND  ODER  NICHT</pre>
</li>
<li><a name="item_swishsearchdefaultrule"></a><a name="swishsearchdefaultrule"></a><b>SwishSearchDefaultRule   [&lt;AND-WORD&gt;|&lt;or-word&gt;]</b>
<p><b>NOTE</b>: This following item is currently not available.</p>
<p><code>SwishSearchDefaultRule</code> defines the default Boolean operator to use if none
is specified between words or phrases.  The default is <code>AND</code>.</p>
<p>The word you specify must match one of the available <code>SwishSearchOperators</code>.</p>
<p>Example:</p>
<pre class="pre-section">    SwishSearchOperators   UND  ODER  NICHT
    # Make it act like a web search engine
    SwishSearchDefaultRule ODER</pre>
</li>
<li><a name="item_resultextformatname"></a><a name="resultextformatname"></a><b>ResultExtFormatName name -x format string</b>
<p><b>NOTE</b>: This following item is currently not available.</p>
<p>The output of Swish-e can be defined by specifying a format string with the
<code>-x</code> command line argument.  Using <code>ResultExtFormatName</code> you can assign a
predefined format string to a name.</p>
<p>Examples:</p>
<pre class="pre-section">    ResultExtFormatName  moreinfo   "%c|%r|%t|%p|&lt;author&gt;|&lt;publishyear&gt;\n"</pre>
<p>Then when searching you can specify the format string's name</p>
<pre class="pre-section">    swish-e   ...  -x moreinfo  ...</pre>
<p>See the <code>-x</code> switch in <a href="swish-run.html">SWISH-RUN</a> for more information about
output formats.</p>
</li>
</ul>

    </div>

    <div class="sub-section">
        
<h2><a name="administrative_headers_directives"></a>Administrative Headers Directives</h2>

<p>Swish-e stores configuration information in the header of the index file.
This information can be retrieved while searching or by functions in
the Swish-e C library.  There are a number of fields available for your
own use.  None of these fields are required:</p>
<ul>
<li><a name="item_indexname"></a><a name="indexname"></a><b>IndexName *text*</b>
</li>
<li><a name="item_indexdescription"></a><a name="indexdescription"></a><b>IndexDescription *text*</b>
</li>
<li><a name="item_indexpointer"></a><a name="indexpointer"></a><b>IndexPointer *text*</b>
</li>
<li><a name="item_indexadmin"></a><a name="indexadmin"></a><b>IndexAdmin *text*</b>
<p>These variables specify information that goes into index files to help
users and administrators.  IndexName should be the name of your index,
like a book title.  IndexDescription is a short description of the index
or a URL pointing to a more full description.  IndexPointer should be
a pointer to the original information, most likely a URL.  IndexAdmin
should be the name of the index maintainer and can include name and email
information.  These values should not be more than 70 or so characters
and should be contained in quotes.  Note that the automatically generated
date in index files is in D/M/Y and 24-hour format.</p>
<p>Examples:</p>
<pre class="pre-section">    IndexName "Linux Documentation"
    IndexDescription "This is an index of /usr/doc on our Linux machine." 
    IndexPointer http://localhost/swish/linux/index.html
    IndexAdmin webmaster</pre>
</li>
</ul>

    </div>

    <div class="sub-section">
        
<h2><a name="document_source_directives"></a>Document Source Directives</h2>

<p>These directives control <i>what</i> documents are indexed and <i>how</i> they are
accessed.  See also <a href="#directives_for_the_file_access_method_only">Directives for the File Access method only</a> and <a href="#directives_for_the_http_access_method_only">Directives for the HTTP Access Method Only</a> for directives that are
specific to those access methods.</p>
<ul>
<li><a name="item_indexdir"></a><a name="indexdir"></a><b>IndexDir [directories or files|URL|external program]</b>
<p>IndexDir defines the source of the documents for Swish-e.  Swish-e
currently supports three file access methods: <b>File system</b>, <b>HTTP</b>
(also called <b>spidering</b>), and <b>prog</b> for reading files from an
external program.</p>
<p>The <code>-S</code> command line argument is used to select the file access method.</p>
<pre class="pre-section">    swish-e -c swish.config -S fs    - file system
    swish-e -c swish.config -S http  - internal http spider
    swish-e -c swish.config -S prog  - external program of any type</pre>
<p>For the <b>fs</b> method of access <b>IndexDir</b> is a space-separated
list of files and directories to index.  Use a forward slash as the path
separator in MS Windows.</p>
<p>For the <b>http</b> method the <b>IndexDir</b> setting is a list of space-separated
URLs.</p>
<p>For the <b>prog</b> method the <b>IndexDir</b> setting is a list of space-separated
programs to run (which generate documents for swish to index).</p>
<p>You may specify more than one <b>IndexDir</b> directive.</p>
<p>Any sub-directories of any listed directory will also be indexed.</p>
<p>Note: While <i>processing</i> directories, Swish-e will ignore any files or
directories that begin with a dot (".").  You may index files or directories
that begin with a dot by specifying their name with <code>IndexDir</code> or <code>-i</code>.</p>
<p>Examples:</p>
<pre class="pre-section">    # Index this directory an any subdirectories
    IndexDir /usr/local/home/http

    # Index the docs directory in current directory
    IndexDir ./docs

    # Index these files in the current directory
    IndexDir ./index.html ./page1.html ./page2.html
    # and index this directory, too
    IndexDir ../public_html</pre>
<p>For the <b>HTTP</b> method of access specify the URL's from which
you want the spidering to begin.</p>
<p>Example:</p>
<pre class="pre-section">    IndexDir http://www.my-site.com/index.html
    IndexDir http://localhost/index.html</pre>
<p>Obviously, using the <b>HTTP</b> method to index is <b>much</b> slower than indexing
local files.  Be well aware that some sites do not appreciate spidering and may
block your IP address.  You may wish to contact the remote site before
spidering their web site.  More information about spidering can be found in
<a href="#directives_for_the_http_access_method_only">Directives for the HTTP Access Method Only</a> below.</p>
<p>For the <a href="swish-run.html#item_prog">prog</a> method of access <b>IndexDir</b> specifies
the path to the program(s) to execute.  The external program must correctly
format the documents being passed back to Swish-e.  Examples of external
programs are provided in the <i>prog-bin</i> directory.</p>
<pre class="pre-section">    IndexDir ./myprogram.pl</pre>
<p>See <a href="swish-run.html#item_prog">prog</a> for details.</p>
<p>Note: Not all directives work with all methods.</p>
</li>
<li><a name="item_nocontents"></a><a name="nocontents"></a><b>NoContents *list of file suffixes*</b>
<p>Files with these suffixes will <b>not</b> have their contents indexed,
but will have their path name (file name) indexed instead.</p>
<p>If the file's type is HTML or HTML2 (as set by <code>IndexContents</code> or
<code>DefaultContents</code>) then the file will be parsed for a HTML title and that
title will be indexed.  Note that you must set the file's type with
<code>IndexContents</code> or <code>DefaultContents</code>: <code>.html</code> and <code>.htm</code> are NOT type HTML
by default.  For example:</p>
<pre class="pre-section">   IndexContents HTML* .htm .html</pre>
<p>If a title is found, it will still be checked for <code>FileRules title</code>, and the
file will be skipped if a match is found.  See <code>FileRules</code>.</p>
<p>If the file's type is not HTML, or it is HTML and no title is found,
then the file's path will be indexed.</p>
<p>For example, this will allow searching by image file name.</p>
<pre class="pre-section">    NoContents .gif .xbm .au .mov .mpg .pdf .ps</pre>
<p>Note: Using this directive will <b>not</b> cause files with those suffixes to be
indexed.  That is, if you use <code>IndexOnly</code> to limit the types of files that are
indexed, then you must specify in <code>IndexOnly</code> the same suffixes listed in
<code>NoContents</code>.</p>
<p>This does <b>not</b> work:</p>
<pre class="pre-section">    # Wrong!
    IndexOnly .htm .html
    NoContents .gif .xbm .au .mov .mpg .pdf .ps</pre>
<p>A <code>-S prog</code> program may set the <code>No-Contents:</code> header to enable this feature
for a specific document (although it would be smarter for the <code>-S prog</code>
program to simply only send the pathname or title to be indexed.</p>
</li>
<li><a name="item_replacerules"></a><a name="replacerules"></a><b>ReplaceRules [replace|remove|prepend|append|regex]</b>
<p>ReplaceRules allows you to make changes to file pathnames before
they're indexed.  These changed file names or URLs will be returned in
search results.</p>
<p>For example, you may index your files locally (with the File system
indexing method), yet return a URL in search results.  This directive can
be used to map the file names to their respective URLs on your web server.</p>
<p>There are five operations you can specify: <b>replace</b>, <b>append</b>,
<b>remove</b>, <b>prepend</b>, and <b>regex</b> They will parse the pathname in the
order you've typed these commands.</p>
<p>This directive uses C library regex.h regular expressions.</p>
<pre class="pre-section">   replace "the string you want replaced" "what to change it to"
   remove "a string to remove"   
   prepend "a string to add before the result"
   append "a string to add after the result"
   regex  "/search string/replace string/options"</pre>
<p>Remember, quotes are needed if an expression contains white space,
and backslashes have special meaning.</p>
<p>Regex is an Extended Regular Expression.  The first character found is 
the delimiter (but it's not smart enough to use matched chars such as [],
(), and {}).</p>
<p>The <b>replace</b> string may use substitution variables:</p>
<pre class="pre-section">    $0      the entire matched (sub)string
    $1-$9   returns patterns captured in "(" ")" pairs
    $`      the string before the matched pattern
    $'      the string after the matched pattern</pre>
<p>The <b>options</b> change the behavior of expression:</p>
<pre class="pre-section">    i       ignore the case when matching
    g       repeat the substitution for the entire pattern</pre>
<p>Examples:</p>
<pre class="pre-section">    ReplaceRules replace testdir/ anotherdir/
    ReplaceRules replace [a-z_0-9]*_m.*\.html index.html

    ReplaceRules remove testdir/

    ReplaceRules prepend http://localhost/
    ReplaceRules append .html

    ReplaceRules regex  !^/web/(.+)/!http://$1.domain.com/!
    replaces a file path:
        /web/search/foo/index.html
    with
        http://search.domain.com/foo/index.html

    ReplaceRules regex  #^#http://localhost/www#
    ReplaceRules prepend http://localhost/www  (same thing)

    # Remove all extensions from C source files
    ReplaceRules remove .c     # ERROR! That "." is *any char*
    ReplaceRules remove \.c    # much better...

    ReplaceRules remove "\\.c" # if in quotes you need double-backslash!  
    ReplaceRules remove "\.c"  # ERROR! "\." -&gt; "." and is *any char*</pre>
</li>
<li><a name="item_indexcontents"></a><a name="indexcontents"></a><b>IndexContents [TXT|HTML|XML|TXT2|HTML2|XML2|TXT*|HTML*|XML*]  *file extensions*</b>
<p>The <code>IndexContents</code> directive assigns one of Swish-e's document parsers to a
document, based on the its extension.  Swish-e currently knows how to parse
TXT, HTML, and XML documents.</p>
<p>The XML2, HTML2, and TXT2 parsers are currently only available when
Swish-e is configured to use libxml2.</p>
<p>You may use XML*, HTML*, and TXT* to select the parser automatically.
If libxml2 is installed then it will be used to parse the content.  Otherwise,
Swish-e's internal parsers will be used.</p>
<p>Documents that are not assigned a parser with <code>IndexContents</code> will, by
default, use the HTML2 parser if libxml2 is installed, otherwise will use
Swish-e's internal HTML parser.  The <code>DefaultContents</code> directive may be used
to assign a parser to documents that do not match a file extension defined with
the <code>IndexContents</code> directive.</p>
<p>Example:</p>
<pre class="pre-section">    IndexContents HTML* .htm .html .shtml
    IndexContents TXT*  .txt .log .text
    IndexContents XML*  .xml</pre>
<p>HTML* is the default type for all files, unless otherwise specified (and this
default can be changed by the <b>DefaultContents</b> directive.  Swish-e parses
titles from HTML files, if available, and keeps track of the context of the
text for context searching (see <code>-t</code> in <a href="swish-run.html">SWISH-RUN</a>).</p>
<p>If using filters (with the <code>FileFilter</code> directive) to convert documents you
should include those extensions, too.  For example, if using a filter to
convert .pdf to .html, you need to tell Swish-e that .pdf should be indexed by
the internal HTML parser:</p>
<pre class="pre-section">    FileFilter  .pdf   pdf2html
    IndexContent  HTML  .pdf</pre>
<p>See also <a href="#document_filter_directives">Document Filter Directives</a>.</p>
<p><b>Note:</b> Some of this may be changed in the future to use content-types instead
of file extensions.  See <a href="swish-3.0.html">SWISH-3.0</a></p>
</li>
<li><a name="item_defaultcontents"></a><a name="defaultcontents"></a><b>DefaultContents [TXT|HTML|XML|TXT2|HTML2|XML2|TXT*|HTML*|XML*]</b>
<p>This sets the default parser for documents that are not specified in
<b>IndexContents</b>. If not specified the default is HTML.</p>
<p>The XML2, HTML2, and TXT2 parsers are currently only available when
Swish-e is configured to use libxml2.</p>
<p>You may use XML*, HTML*, and TXT* to select the parser automatically.
If libxml2 is installed then it will be used to parse the content.  Otherwise,
Swish-e's internal parsers will be used.</p>
<p>Example:</p>
<pre class="pre-section">    DefaultContents HTML</pre>
<p>The <code>DefaultContents</code> directive <i>should</i> be used when spidering, as HTML
files may be returned without a file extension (such as when requesting a
directory and the default index.html is returned).</p>
</li>
<li><a name="item_fileinfocompression"></a><a name="fileinfocompression"></a><b>FileInfoCompression [yes|NO]</b>
<p>** This directive is currently not supported **</p>
<p>Setting <b>FileInfoCompression</b> to <code>yes</code> will compress the index file to save
disk space.  This may result in longer indexing times.  The default is <code>no</code>.</p>
<p>Also see the <code>-e</code> switch in <a href="swish-run.html">SWISH-RUN</a> for saving RAM during
indexing.</p>
</li>
</ul>

    </div>

    <div class="sub-section">
        
<h2><a name="document_contents_directives"></a>Document Contents Directives</h2>

<p>These directives control what information is extracted from your source
documents, and how that information is made available during searching.</p>
<ul>
<li><a name="item_converthtmlentities"></a><a name="converthtmlentities"></a><b>ConvertHTMLEntities [YES|no]</b>
<p>ASCII <i>entities</i> can be converted automatically while indexing documents of
type HTML (not for HTML2).  For performance reasons you may wish to set this to
<code>no</code> if your documents do not contain HTML entities.  The default is <code>yes</code>.</p>
<p>If <code>ConvertHTMLEntities</code> is set <code>no</code> the entities will be indexed without
conversion.</p>
<p><b>NOTE:</b> Entities within XML files and files parsed with libxml2 (HTML2) are
converted regardless of this setting.</p>
</li>
<li><a name="item_metanames"></a><a name="metanames"></a><b>MetaNames *list of names*</b>
<p>META names are a way to define "fields" in your XML and HTML documents.  You
can use the META names in your queries to limit the search to just the words
contained in that META name of your document.  For example, you might have a
META tagged field in your documents called <code>subjects</code> and then you can search
your documents for the word "foo" but only return documents where "foo" is
within the <code>subjects</code> META tag.</p>
<pre class="pre-section">    swish-e -w subjects=foo</pre>
<p>(See also the <code>-t</code> switch in <a href="swish-run.html">SWISH-RUN</a> for information about
<i>context</i> searching in HTML documents.)</p>
<p>The <b>MetaNames</b> directive is a space separated list.  For example:</p>
<pre class="pre-section">    MetaNames meta1 meta2 keywords subjects</pre>
<p>You may also use <code>UndefinedMetaTags</code> to specify automatic extraction of meta
names from your HTML and XML documents, and also to ignore indexing content of
meta tags.</p>
<p>META tags can have two formats in your <b>HTML</b> source documents:</p>
<pre class="pre-section">    &lt;META NAME="meta1" CONTENT="some content"&gt;</pre>
<p>and (if using the HTML2/libxml2 parser)</p>
<pre class="pre-section">    &lt;meta1&gt;
        some content
    &lt;/meta1&gt;</pre>
<p>But this second version is invalid HTML, and will generate a warning if
ParserWarningLevel is set (libxml2 only).</p>
<p>And in <b>XML</b> documents, use the format:</p>
<pre class="pre-section">    &lt;meta1&gt;
        Some Content
    &lt;/meta1&gt;</pre>
<p>Then you can limit your search to just META <b>meta1</b> like this:</p>
<pre class="pre-section">    swish-e -w 'meta1=(apples or oranges)'</pre>
<p>You may nest the XML and the start/end tag versions:</p>
<pre class="pre-section">    &lt;keywords&gt;
        &lt;tag1&gt;
            some content
        &lt;/tag1&gt;
        &lt;tag2&gt;
            some other content
        &lt;/tag2&gt;
    &lt;keywords&gt;</pre>
<p>Then you can search in both tag2 and tag2 with:</p>
<pre class="pre-section">    swish-e -w 'keywords=(query words)'</pre>
<p>Swish-e indexes all text as some metaname.  The default is <code>swishdefault</code>, so
these two queries are the same:</p>
<pre class="pre-section">    swish-e -w foo
    swish-e -w swishdefault=foo</pre>
<p>When indexing HTML Swish-e indexes the HTML title as default text, so
when searching Swish-e will find matches in both the HTML body and the
HTML title.  Swish also, by default, indexes content of meta tags.  So:</p>
<pre class="pre-section">    swish-e -w foo</pre>
<p>will find "foo" in the body, the title, or any meta tags.</p>
<p>Currently, there's no way to prevent Swish-e from indexing the title contents
along with the body contents, but see <code>UndefinedMetaTags</code> for how to control
the indexing of meta tags.</p>
<p>If you would like to search just the title text, you may use:</p>
<pre class="pre-section">    MetaNames swishtitle</pre>
<p>This will index the title text separately under the built-in swish
internal meta name "swishtitle".  You may then search like</p>
<pre class="pre-section">    swish-e -w foo  -- search for "foo" in title, body (and undefined meta tags)
    swish-e -w swishtitle=foo -- search for "foo" in title only</pre>
<p>In addition to swishtitle, you can limit searches to documents' path with:</p>
<pre class="pre-section">   MetaNames swishdocpath</pre>
<p>Then to search for "foo" but also limit searches to documents that include
"manual" or "tutorial" in their path:</p>
<pre class="pre-section">   swish-e -w foo swishdocpath=(manual or tutorial)</pre>
<p>See also <code>ExtractPath</code>.</p>
</li>
<li><a name="item_metanamealias"></a><a name="metanamealias"></a><b>MetaNameAlias *meta name* *list of aliases*</b>
<p>MetaNameAlias assigns aliases for a meta name.  For example, if your
documents contain meta tags "description", "summary", and "overview"
that all give a summary of your documents you could do this:</p>
<pre class="pre-section">    MetaNames summary
    MetaNameAlias summary description overview</pre>
<p>Then all three tags will get indexed as meta tag "summary".  You can
then search all the fields as:</p>
<pre class="pre-section">    -w summary=foo</pre>
<p>The Alias work at search time, too.  So these will also limit the search
to the "summary" meta name.</p>
<pre class="pre-section">    -w description=foo
    -w overview=foo</pre>
</li>
<li><a name="item_metanamesrank"></a><a name="metanamesrank"></a><b>MetaNamesRank integer *list of meta names*</b>
<p>You can assign a bias to metanames that will affect how ranking is
calculated.  The range of values is from -10 to +10, with zero being
no bias.</p>
<pre class="pre-section">    MetaNamesRank 4 subject
    MetaNamesRank 3 swishdefault
    MetaNamesRank 2 author publisher
    MetaNamesRank -5 wrongwords</pre>
<p>This feature is still considered experimental. If you use it, please send feedback
to the discussion list.</p>
</li>
<li><a name="item_htmllinksmetaname"></a><a name="htmllinksmetaname"></a><b>HTMLLinksMetaName *metaname*</b>
<p>Allows indexing of HTML links.  Normally, HTML links (href tags) are
not indexed by Swish-e.  This directive defines a metaname, and links
will be indexed under this meta name.</p>
<p>Example:</p>
<pre class="pre-section">    HTMLLinksMetaName links</pre>
<p>Now, to limit searches to files with a link to "home.html" do this:</p>
<pre class="pre-section">    -w links='"home.html"'</pre>
<p>The double quotes force a phrase search.    </p>
<p>To make Swish-e index links as normal text, you may use:</p>
<pre class="pre-section">    HTMLLinksMetaName swishdefault</pre>
<p>This feature is only available with the libxml2 HTML parser.    </p>
</li>
<li><a name="item_imagelinksmetaname"></a><a name="imagelinksmetaname"></a><b>ImageLinksMetaName *metaname*</b>
<p>Allows indexing of image links under a metaname.  Normally, image URLs
are not indexed.</p>
<p>Example:</p>
<pre class="pre-section">    ImagesLinksMetaName images</pre>
<p>Now, if you would like to find pages that include a nice image of a beach:</p>
<pre class="pre-section">    -w images='beach'</pre>
<p>To make Swish-e index links as normal text, you may use:</p>
<pre class="pre-section">    ImageLinksMetaName swishdefault</pre>
<p>This feature is only available with the libxml2 HTML parser.</p>
</li>
<li><a name="item_indexalttagmetaname"></a><a name="indexalttagmetaname"></a><b>IndexAltTagMetaName *tagname*|as-text</b>
<p>Allows indexing of images &lt;IMG&gt; ALT tag text.  Specify either a tag name which will be
used as a metaname, or the special text "as-text" which says to index the ALT text as
if it were plain text at the current location.</p>
<p>For example, by specifying a tag name:</p>
<pre class="pre-section">   IndexAltTagMetaName bar</pre>
<p>would make this markup:   </p>
<pre class="pre-section">    &lt;foo&gt;
        &lt;img src="/someimage.png" alt="Alt text here"&gt;
    &lt;/foo&gt;</pre>
<p>appear like</p>
<pre class="pre-section">    &lt;foo&gt;
        &lt;bar&gt;Alt text here&lt;/bar&gt;
    &lt;/foo&gt;</pre>
<p>Then the normal rules (<code>MetaNames</code> and <code>PropertyNames</code>) apply to how that
text is indexed.</p>
<p>If you use the special tag "as-text" then</p>
<pre class="pre-section">    &lt;foo&gt;
        &lt;img src="/someimage.png" alt="Alt text here"&gt;
    &lt;/foo&gt;</pre>
<p>simply becomes</p>
<pre class="pre-section">    &lt;foo&gt;
        Alt text here
    &lt;/foo&gt;</pre>
<p>This feature is only available when using the libxml2 parser (HTML2 and XML2).    </p>
</li>
<li><a name="item_absolutelinks"></a><a name="absolutelinks"></a><b>AbsoluteLinks [yes|NO]</b>
<p>If this is set true then Swish-e will attempt to convert relative URIs
extracted from HTML documents for use with <code>HTMLLinksMetaName</code> and
<code>ImageLinksMetaName</code> into absolute URIs.  Swish-e will use any &lt;BASE&gt; tag
found in the document, otherwise it will use the file's pathname.  The pathname
used will be the pathname *after* <code>ReplaceRules</code> has been applied to the
document's pathname.</p>
<p>For example, say you wish to index image links under the metaname
"images".</p>
<pre class="pre-section">    ImageLinksMetaName images</pre>
<p>If an image is located in <a href="http://localhost/vacations/france/index.html">http://localhost/vacations/france/index.html</a> and
<code>AbsoluteLinks</code> is set to no, then a image within that document:</p>
<pre class="pre-section">     &lt;img src="beach.jpeg"&gt;</pre>
<p>will only index "beach.jpeg".</p>
<p>But, if you want more detail when searching, you can enable <code>AbsoluteLinks</code>
and Swish-e will index "<a href="http://localhost/vacations/france/beach.jpeg">http://localhost/vacations/france/beach.jpeg</a>".  You can
then look for images of beaches, but only in France:</p>
<pre class="pre-section">    -w images=(beach and france)</pre>
<p>This also means you can search for any images within France:</p>
<pre class="pre-section">    -w images=(france)</pre>
<p>This feature is only available with the libxml2 HTML parser.    </p>
</li>
<li><a name="item_undefinedmetatags"></a><a name="undefinedmetatags"></a><b>UndefinedMetaTags [error|ignore|INDEX|auto]</b>
<p>This directive defines the behavior of Swish-e during indexing when a
meta name is found but is <b>not</b> listed in <b>MetaNames</b>.  There are
four choices:</p>
<ul>
<li><a name="item_error"></a><a name="error"></a><b>error</b>
<p>If a meta name is found that is not listed in <b>MetaNames</b>
then indexing will be halted and an error reported.</p>
</li>
<li><a name="item_ignore"></a><a name="ignore"></a><b>ignore</b>
<p>The contents of the meta tag are ignored and <b>not</b> indexed unless a metaname
has been defined with the <code>MetaNames</code> directive.</p>
</li>
<li><a name="item_index"></a><a name="index"></a><b>index</b>
<p>The contents of the meta tag are indexed, but placed in the
main index unless there's an enclosing metatag already in force. This
is the default.</p>
</li>
<li><a name="item_auto"></a><a name="auto"></a><b>auto</b>
<p>This method create meta tags automatically for HTML meta names
and XML elements.  Using this is the same as specifying all the meta
names explicitly in a <b>MetaNames</b> directive.</p>
</li>
</ul>
</li>
<li><a name="item_undefinedxmlattributes"></a><a name="undefinedxmlattributes"></a><b>UndefinedXMLAttributes [DISABLE|error|ignore|index|auto]</b>
<p>This is similar to <code>UndefinedMetaTags</code>, but only applies to XML documents
(parsed with libxml2).  This allows indexing of attribute content, and provides
a way to index the content under a metaname.  For example,
<code>UndefinedXMLAttributes</code> can make</p>
<pre class="pre-section">    &lt;person age="23"&gt;
          John Doe
    &lt;/person&gt;</pre>
<p>look like the following to swish:</p>
<pre class="pre-section">    &lt;person&gt;
        &lt;person.age&gt;
            23
        &lt;/person.age&gt;
        John Doe
    &lt;/person&gt;</pre>
<p>What happens to the text "23" will depend on the setting of
<code>UndefinedXMLAttributes</code>:    </p>
<ul>
<li><a name="item_disable"></a><a name="disable"></a><b>disable</b>
<p>XML attributes are not parsed and not indexed.  This is the default.</p>
</li>
<li><a name="item_error"></a><a name="error"></a><b>error</b>
<p>If the concatenated meta name (e.g. person.age) is not listed in
<b>MetaNames</b> then indexing will be halted and an error reported.</p>
</li>
<li><a name="item_ignore"></a><a name="ignore"></a><b>ignore</b>
<p>The contents of the meta tag are ignored and <b>not</b> indexed unless a metaname
has been defined with the <code>MetaNames</code> directive.</p>
</li>
<li><a name="item_index"></a><a name="index"></a><b>index</b>
<p>The contents of the meta tag are indexed, but placed in the main index
unless there's an enclosing metatag already in force.</p>
</li>
<li><a name="item_auto"></a><a name="auto"></a><b>auto</b>
<p>This method will create meta tags from the combined element and attributes
(and XML Class name) This options should be used with caution as it can
generate a lot of metaname entries.</p>
<p>See also the example below <code>XMLClassAttribues</code>.</p>
</li>
</ul>
</li>
<li><a name="item_xmlclassattributes"></a><a name="xmlclassattributes"></a><b>XMLClassAttributes *list of XML attribute names*</b>
<p>Combines an XML class name with the element name to make up a metaname.
For example:</p>
<pre class="pre-section">    XMLClassAttributes class

    &lt;person class="first"&gt;
        John
    &lt;/person&gt;
    &lt;person class="last"&gt;
        Doe
    &lt;/person&gt;</pre>
<p>Will appear to Swish-e as:</p>
<pre class="pre-section">    &lt;person&gt;
        &lt;person.first&gt;
        John
        &lt;/person.first&gt;
    &lt;/person&gt;
    &lt;person&gt;
        &lt;person.last&gt;
        Doe
        &lt;/person.last&gt;
    &lt;/person&gt;</pre>
<p>How the data is indexed depends on <code>MetaNames</code> and <code>UndefinedMetaTags</code>.</p>
<p>Here's an example using the following configuration which combines the two
directives <code>XMLClassAttributes</code> and <code>UndefinedXMLAttributes</code>.</p>
<pre class="pre-section">    XMLClassAttributes class
    UndefinedMetaTags auto
    UndefinedXMLAttributes auto
    IndexContents XML2 .xml</pre>
<p>The source XML file looks like:    </p>
<pre class="pre-section">    &lt;xml&gt; &lt;person class="student" phone="555-1212" age="102"&gt; John &lt;/person&gt;
    &lt;person greeting="howdy"&gt;Bill&lt;/person&gt; &lt;/xml&gt;</pre>
<p>Swish-e parses as:</p>
<pre class="pre-section">    ./swish-e -c 2 -i 1.xml -T parsed_tags  parsed_text  -v 0
    Indexing Data Source: "File-System"

    &lt;xml&gt; (MetaName)

        &lt;person&gt; (MetaName)
            &lt;person.student&gt; (MetaName)
                &lt;person.student.phone&gt; (MetaName)
                    555-1212
                &lt;/person.student.phone&gt; 
                &lt;person.student.age&gt; (MetaName)
                    102
                &lt;/person.student.age&gt; 
                John
        &lt;/person&gt; 

        &lt;person&gt; (MetaName)
            &lt;person.greeting&gt; (MetaName)
                howdy
            &lt;/person.greeting&gt; 
            Bill
        &lt;/person&gt; 

    &lt;/xml&gt; 
    Indexing done!</pre>
<p>One thing to note is that the first &lt;person&gt; block finds a class name
"student" so all metanames that are created from attributes use the
combined name "person.student".  The second &lt;person&gt; block doesn't contain
a "class" so, the attribute name is combined directly with the element
name (e.g. "person.greeting").</p>
</li>
<li><a name="item_extractpath"></a><a name="extractpath"></a><b>ExtractPath *metaname* [replace|remove|prepend|append|regex]</b>
<p>This directive can be used to index extracted parts of a document's path.
A common use would be to limit searches to specific areas of your
file tree.</p>
<p>The extracted string will be indexed under the specified meta name.</p>
<p>See <code>ReplaceRules</code> for a description of the various pattern replacement
methods, but you will use the <i>regex</i> method.</p>
<p>For example, say your file system (or web tree) was organized into departments:</p>
<pre class="pre-section">    /web/sales/foo...
    /web/parts/foo...
    /web/accounting/foo...</pre>
<p>And you wanted a way to limit searches to just documents under "sales".</p>
<pre class="pre-section">    ExtractPath department regex !^/web/([^/]+)/.*$!$1!</pre>
<p>Which says, extract out the department name (as substring $1) and index it as
meta name <code>department</code>.  Then to limit a search to the sales department:</p>
<pre class="pre-section">    swish-e -w foo AND department=sales</pre>
<p>Note that the <code>regex</code> method uses a substitution pattern, so to index only a
sub-string match the <i>entire</i> document path in the regular expression, as
shown above.  Otherwise any part that is not matched will end up in the
substitution pattern.</p>
<p>See the <code>ExtractPathDefault</code> option for a way to set a value if not patterns
match.</p>
<p>Although unlikely, you may use more than one <code>ExtractPath</code> directive.  More
than one directive of the <i>same</i> meta name will operate successively (in order
listed in the configuration file) on the path.  This allows you to use regular
expressions on the results of the previous pattern substitution (as if piping
the output from one expression to the patter of the next).</p>
<pre class="pre-section">    ExtractPath foo regex !^(...).+$!$1!
    ExtractPath foo regex !^.+(.)$!$1!</pre>
<p>So, the third letter is indexed as meta name "foo" if both patterns match.    </p>
<pre class="pre-section">    ExtractPath foo regex !^X(...).+$!$1!
    ExtractPath foo regex !^.+(.)$!$1!</pre>
<p>Now (not the "X"), if the first pattern doesn't match, the last character of
the path name is indexed.  You must be clear on this behavior if you are using
more than one <code>ExtractPath</code> directive with the same metaname.</p>
<p>The document path operated on is the real path swish used to access the
document.  That is, the <code>ReplaceRules</code> directive has no effect on the path
used with <code>ExtractPath</code>.</p>
<p>The full path is used for each meta name if more than one <code>ExtractPath</code>
directive is used.  That is, changes to the path used in <code>ExtractPath foo</code> do
not affect the path used by <code>ExtractPath bar</code>.</p>
</li>
<li><a name="item_extractpathdefault"></a><a name="extractpathdefault"></a><b>ExtractPathDefault *metaname* default_value</b>
<p>This can be used with <code>ExtractPath</code> to set a default string to index under the
given metaname if none of the <code>ExtractPath</code> patterns match.</p>
<p>For example, say your want to index each document with a metaname
"department" based on the following path examples:</p>
<pre class="pre-section">    /web/sales/foo...
    /web/parts/foo...
    /web/accounting/foo...</pre>
<p>But you are also indexing documents that do not follow that pattern and you want to search those
separately, too.</p>
<pre class="pre-section">    ExtractPath department regex !^/web/([^/]+)/.*$!$1!
    ExtractPathDefault department other</pre>
<p>Now, you may search like this:</p>
<pre class="pre-section">    -w foo department=(sales)      - limit searches to the sales documents
    -w foo department=(parts)      - limit searches to the parts documents
    -w foo department=(accounting) - limit searches to the accounting documents
    -w foo department=(other)      - everything but sales, parts, and accounting.</pre>
<p>This basically is a shortcut for:</p>
<pre class="pre-section">    -w foo not department=(sales or parts or accounting)</pre>
<p>but you don't need to keep track of what was extracted.    </p>
</li>
<li><a name="item_propertynames"></a><a name="propertynames"></a><b>PropertyNames *list of meta names*</b>
</li>
<li><a name="item_propertynamescomparecase"></a><a name="propertynamescomparecase"></a><b>PropertyNamesCompareCase *list of meta names*</b>
</li>
<li><a name="item_propertynamesignorecase"></a><a name="propertynamesignorecase"></a><b>PropertyNamesIgnoreCase *list of meta names*</b>
<p>Swish-e allows you to specify certain META tags that can be used as <b>document
properties</b>.  The contents of any META tag that has been identified as a
document property can be returned as part of the search results along with the
rank, file name, title, and document size (see the <code>-p</code> and <code>-x</code> switches in
<a href="swish-run.html">SWISH-RUN</a>).</p>
<p>Properties are useful for returning additional data from documents in
search results -- this saves the effort of reading and parsing the source
files while reading Swish-e search results, and is especially useful
when the source documents are no longer available or slow to access
(e.g. over http).</p>
<p>Another feature of properties is that Swish-e can use the PropertyNames for
sorting the search results (see the <code>-s</code> switch).</p>
<pre class="pre-section">    PropertyNames author subjects</pre>
<p>Two variations are available.  <code>PropertyNamesCompareCase</code> and
<code>PropertyNamesIgnoreCase</code>.  These tell Swish-e to either ignore or compare
case when sorting results.  The default for <code>PropertyNames</code> is to ignore the
case.</p>
<pre class="pre-section">    PropertyNamesIgnoreCase subject
    PropertyNamesCompareCase keyword</pre>
<p>The defaults for "internal" properties are:</p>
<pre class="pre-section">    swishtitle          --  ignore the case
    swishdocpath        --  compare case
    swishdescription    --  compare case</pre>
<p>These can be overridden with <code>PropertyNamesCompareCase</code> and
<code>PropertyNamesIgnoreCase</code>.</p>
<pre class="pre-section">    PropertyNamesCompareCase swishtitle    </pre>
<p>Use of PropertyNames will increase the size of your index files, sometimes
significantly.  Properties will be compressed if Swish-e is compiled with zlib
as described in the <a href="install.html">INSTALL</a> manual page.</p>
<p>If Swish-e finds more than one property of the same name in a document
the property's contents will be concatinated for strings, and a warning
issues for numeric (or date) properties.</p>
</li>
<li><a name="item_propertynamesnostripchars"></a><a name="propertynamesnostripchars"></a><b>PropertyNamesNoStripChars</b>
<p>PropertyNamesNoStripChars specifies that the listed properties should not
have strings of low ASCII characters replaced with a space character.
Properties will be stored as found in the document.</p>
<p>When printing properties with the swish-e binary newlines are replaced with
a space character.  Use the swish-e library (or SWISH::API perl module) to
fetch properties without newlines replaced.</p>
</li>
<li><a name="item_propertynamesnumeric"></a><a name="propertynamesnumeric"></a><b>PropertyNamesNumeric</b>
<p>This directive is similar to <code>PropertyNames</code>, but it flags the property as
being a string of digits (integer value) that will be stored as binary data
instead of a string.  This allows sorting with <code>-s</code> and limiting with <code>-L</code> to
sort and limit the property correctly.</p>
<p>Swish-e uses <code>strtoul(3)</code> to convert the string into an unsigned long integer.
Therefore, only positive integers can be stored.</p>
<p>Future versions of Swish-e may be able to store different property types
(such as negative integers and real numbers).  This directive may change
in future releases of Swish.</p>
</li>
<li><a name="item_propertynamesdate"></a><a name="propertynamesdate"></a><b>PropertyNamesDate</b>
<p>This directive is exactly like <code>PropertyNamesNumeric</code>, but it also flags the
number as a machine timestamp (seconds since Epoch), and will print a formatted
date when returning this property.  See <code>-x</code> in <a href="swish-run.html">SWISH-RUN</a>.</p>
<p>Swish-e will not parse dates when indexing; you must use a timestamp.</p>
</li>
<li><a name="item_propertynamealias"></a><a name="propertynamealias"></a><b>PropertyNameAlias  *property name* *list of aliases*</b>
<p>This allows aliases for a property name.  For example, if you are indexing
HTML files, plus XML files that are written in English, German, and
Spanish and thus use the tags "title", "titel", and "título" you can use:</p>
<pre class="pre-section">    PropertyNameAlias swishtitle title titel título titulo</pre>
<p>Note that "swishtitle" is the built-in property used to store the title of
a document, and therefore you do not need to specify it as a PropertyName
before use.</p>
</li>
<li><a name="item_propertynamesmaxlength"></a><a name="propertynamesmaxlength"></a><b>PropertyNamesMaxLength  integer *list of meta names*</b>
<p>This option will set the max length of the text stored in a property.
You must specify a number between 0 and the max integer size on your
platform, and a list of properties.  The properties specified must not
be aliases.</p>
<p>If any of the property names do not exist they will be created (e.g. you
do not need to define the property with PropertyNames first).</p>
<p>In general, this feature will only be useful when parsing HTML or XML
with the libxml2 parser.</p>
<p>For example:</p>
<pre class="pre-section">    PropertyNamesMaxLength 1000 swishdescription
    PropertyNameAlias swishdescription body</pre>
<p>Is somewhat like</p>
<pre class="pre-section">    StoreDescription HTML &lt;body&gt; 1000
    StoreDescription XML &lt;body&gt; 1000
    StoreDescription HTML2 &lt;body&gt; 1000
    StoreDescription XML2 &lt;body&gt; 1000</pre>
<p>but StoreDescription allows setting the tag for each parser type.</p>
<pre class="pre-section">    PropertyNamesMaxLength 1000 headings
    PropertyNameAlias headings h1 h2 h3 h4</pre>
<p>collects all the heading text into a single property called "headings", not
to exceed 1000 characters.</p>
</li>
<li><a name="item_propertynamessortkeylength"></a><a name="propertynamessortkeylength"></a><b>PropertyNamesSortKeyLength  integer *list of meta names*</b>
<p>Sets the length of the string used when sorting.
The default is 100 characters.  The -T metanames debugging option will
list the current values for an index.</p>
<p>This setting is used when sorting during indexing, and perhaps when sorting
while searching.  It also effects the order when limiting to a range of values
with the -L option.</p>
</li>
<li><a name="item_presortedindex"></a><a name="presortedindex"></a><b>PreSortedIndex *list of property names*</b>
<p>By default Swish-e generates presorted tables while indexing for each
property name.  This allows faster sorting when generating results.
On large document collections this presorting may add to the indexing
time, and also adds to the total size of the index.  This directive can
be used to customize exactly which properties will be presorted.</p>
<p>If <code>PreSortedIndex</code> it is <i>not</i> present in the config file (default action),
all the properties will be presorted at indexing time.  If it is present
without any parameter, no properties will be presorted.  Otherwise, only the
property names specified will be presorted.</p>
<p>For example, if you only wish to sort results by a property called <code>title</code>:</p>
<pre class="pre-section">    PropertyNames title age time
    PreSortedIndex  title</pre>
</li>
<li><a name="item_storedescription"></a><a name="storedescription"></a><b>StoreDescription [XML &lt;tag&gt; size|HTML &lt;meta&gt; size|TXT size]</b>
<p><b>StoreDescription</b> allows you to store a document description in the index
file.  This description can be returned in your search results when the <code>-x</code>
switch is used to include the <i>swishdescription</i> for extended results, or by
using <code>-p swishdescription</code>.</p>
<p>The document type (XML, HTML and TXT) must match the document type currently
being indexed as set by <code>IndexContents</code> or <code>DefaultContents</code>.  See those
directives for possible values.  A common problem is using <code>StoreDescription</code>
yet not setting the document's type with <code>IndexContents</code> or
<code>DefaultContents</code>.  Another problem is different types:</p>
<pre class="pre-section">    IndexContents HTML2 .html
    StoreDescription HTML &lt;body&gt;</pre>
<p>Then .html documents are assigned a type of HTML2 (and parsed by the libxml2 parser), but the
description will not be stored since it is type HTML instead of HTML2.</p>
<p>For text documents you specify the type TXT (or TXT2 or TXT*) and the number of <i>characters</i> to capture.</p>
<pre class="pre-section">    StoreDescription TXT 20</pre>
<p>The above stores only the first twenty characters from the text file in the Swish-e index
file.</p>
<p>For HTML, and XML file types, specify the tag to use for the
description, and optionally the number of characters to capture.  If not
specified will capture the entire contents of the tag.</p>
<pre class="pre-section">    StoreDescription HTML &lt;body&gt; 20000
    StoreDescription XML  &lt;desc&gt; 40</pre>
<p>Again, note that documents must be assigned a document type with
<code>IndexContents</code> or <code>DefaultContents</code> to use this feature.</p>
<p>Swish-e will compress the descriptions (or any other large property) if
compiled to use zlib (see <a href="install.html">INSTALL</a>).  This is recommended when using
StoreDescription and a large number of documents.  Compression of 30% to 50% is
not uncommon with HTML files.</p>
</li>
<li><a name="item_propcompressionlevel"></a><a name="propcompressionlevel"></a><b>PropCompressionLevel [0-9]</b>
<p>This directive sets the compression level used when storing properties
to disk.  A setting of zero is no compression, and a setting of nine is
the most compression.</p>
<p>The default depends on the default setting compiled with zlib, but is
typically six.</p>
<p>This option is useful when using <code>StoreDescription</code> to store a large amount
text in properties (or if using <code>PropertyNames</code> with large property sizes).</p>
<p>Properties must be over a value defined in <i>config.h</i> (100 is the
default) before compression will be attempted.  Swish-e will never store
the results of the compression if the compressed data is larger than
the original data.</p>
<p>This option is only available when Swish-e is compiled with zlib support.</p>
</li>
<li><a name="item_truncatedocsize"></a><a name="truncatedocsize"></a><b>TruncateDocSize *number of characters*</b>
<p>TruncateDocSize limits the size of a document while indexing documents
and/or using filters.  This config directive truncates the numbers of
read bytes of a document to the specified size.  This means: if a document
is larger, read only the specified numbers of bytes of the document.</p>
<p>Example:</p>
<pre class="pre-section">    TruncateDocSize    10000000</pre>
<p>The default is zero, which means read all data.</p>
<p>Warning: If you use TruncateDocSize, use it with care!  TruncateDocSize
is a safety belt only, to limit e.g.  filteroutput, when accessing
databases, or to limit "runnaway" filters.  Truncating doc input may
destroy document structures for Swish-e (e.g.  swish may miss closing
tags for XML or HTML documents).</p>
<p>TruncateDocSize does not currently work with the <code>prog</code> input source method.</p>
</li>
<li><a name="item_fuzzyindexingmode"></a><a name="fuzzyindexingmode"></a><b>FuzzyIndexingMode NONE|Stemming|Soundex|Metaphone|DoubleMetaphone</b>
<p>Selects the type of index to create.  Only one type of index may be created.</p>
<p>It's a good idea to create both a normal index and a fuzzy index and
allow your search interface select which index to use.  Many people find the
fuzzy searches to be too fuzzy.</p>
<p>The available fuzzy indexing options can be displayed by running</p>
<pre class="pre-section">   swish-e -T LIST_FUZZY_MODES</pre>
<p>Available options include:</p>
<ul>
<li><a name="item_none"></a><a name="none"></a><b>None</b>
<p>Words are stored in the index without any conversion.  This is the default.</p>
</li>
<li><a name="item_stemming__"></a><a name="stemming__"></a><b>Stemming_*</b>
<p>This options uses one of the installed Snowball stemmers (<a href="http://snowball.tartarus.org/">http://snowball.tartarus.org/</a>).</p>
<p>The installed stemmers can be viewed by running</p>
<pre class="pre-section">   swish-e -T LIST_FUZZY_MODES</pre>
<p>For example, to use the Spanish stemming module:</p>
<pre class="pre-section">   FuzzyIndexingMode Stemming_es</pre>
</li>
<li><a name="item_stem"></a><a name="stem"></a><b>Stem or Stemming_en</b>
<p><b>**This option is no longer supported.**</b></p>
<p>Selects the legacy Swish-e English stemmer.</p>
<p>This is deprecated in favor of the Snowball English stemmer Stemming_en1.</p>
<p>Words are converted using the Porter stemming algorithm.</p>
<p>From: <a href="http://www.tartarus.org/~martin/PorterStemmer/">http://www.tartarus.org/~martin/PorterStemmer/</a></p>
<pre class="pre-section">    The Porter stemming algorithm (or Porter stemmer) is a
    process for removing the commoner morphological and inflexional
    endings from words in English. Its main use is as part of a
    term normalisation process that is usually done when setting up
    Information Retrieval systems.</pre>
<p>This will help a search for "running" to also find "run" and "runs", for example.</p>
<p>The stemming function does not convert words to their root, rather
programmatically removes endings on words in an attempt to make similar
words with different endings stem to the same string of characters.
It's not a perfect system, and searches on stemmed indexes often return
curious results.  For example, two entirely different words may stem to
the same word.</p>
<p>Stemming also can be confusing when used with a wildcard (truncation).
For example, you might expect to find the word "running" by searching for
"runn*".  But this fails when using a stemmed index, as "running" stems to
"run", yet searching for "runn*" looks for words that start with "runn".</p>
</li>
<li><a name="item_soundex"></a><a name="soundex"></a><b>Soundex</b>
<p>Soundex was developed in the 1880s so records for people with similar
sounding names could be found more readily.  Soundex is a coded surname
based on the way a surname sounds rather than spelling.  Surnames that
sound similar, like Smith and Smyth, are filed together under the same
Soundex code.  This is mostly useful for US English.</p>
<p>Soundex should not be used to search for sound-alike words.  Metaphone
would be more appropriate for generic sound matching of words.  Soundex
should only be used where you need to search multiple documents for
proper names which sound similar.  This is primarily used for indexing
genealogical records.  This may be useful for indexing other collections
of data consisting mostly of names.  Many common name variations are
matched by Soundex.  The only notable exception is the first letter of
the name.  The first letter is not matched for sound.</p>
</li>
<li><a name="item_metaphone"></a><a name="metaphone"></a><b>Metaphone and DoubleMetaphone</b>
<p>Words are transformed into a short series of letters representing the sound of the word (in English).
Metaphone algorithms are often used for looking up mis-spelled words in dictionary programs.</p>
<p>From: <a href="http://aspell.sourceforge.net/metaphone/">http://aspell.sourceforge.net/metaphone/</a></p>
<pre class="pre-section">    Lawrence Philips' Metaphone Algorithm is an algorithm which returns
    the rough approximation of how an English word sounds.</pre>
<p>The <code>DoubleMetaphone</code> mode will sometimes generate two different metaphones
for the same word.  This is supposed to be useful when a word may be pronounced
more than one way.</p>
<p>A metaphone index should give results somewhere in between Soundex and Stemming.    </p>
</li>
</ul>
</li>
<li><a name="item_usestemming"></a><a name="usestemming"></a><b>UseStemming [yes|NO]</b>
<p>Put yes to apply word stemming algorithm during indexing, else no.</p>
<pre class="pre-section">    UseStemming no
    UseStemming yes</pre>
<p>When UseStemming is set to <code>yes</code> every word is stemmed before placing it in to
the index.</p>
<p>This option is deprecated.  It has been superceded by <code>FuzzyIndexingMode</code>.</p>
</li>
<li><a name="item_usesoundex"></a><a name="usesoundex"></a><b>UseSoundex [yes|NO]</b>
<p>When UseSoundex is set to <code>yes</code> every word is converted to a Soundex code
before placing it in to the index.</p>
<p>This option is deprecated.  It has been superceded by <code>FuzzyIndexingMode</code>.</p>
</li>
<li><a name="item_ignoretotalwordcountwhenranking"></a><a name="ignoretotalwordcountwhenranking"></a><b>IgnoreTotalWordCountWhenRanking [YES|no]</b>
<p>Put yes to ignore the total number of words in the file when calculating
ranking. Often better with merges and small files. Default is yes.</p>
<pre class="pre-section">    IgnoreTotalWordCountWhenRanking no</pre>
<p>The default was changed from no to yes in version 2.2.</p>
<p><b>NOTE:</b> must be set to <b>no</b> if you intend to use the -R 1 option when
searching.</p>
</li>
<li><a name="item_minwordlimit"></a><a name="minwordlimit"></a><b>MinWordLimit *integer*</b>
<p>Set the minimum length of an word. Shorter words will not be indexed.
The default is 1 (as defined in <i>src/config.h</i>).</p>
<pre class="pre-section">    MinWordLimit 5</pre>
</li>
<li><a name="item_maxwordlimit"></a><a name="maxwordlimit"></a><b>MaxWordLimit *integer*</b>
<p>Set the maximum length of an indexable word. Every longer word will not
be indexed.  The Default is 40 (as defined in <i>src/config.h</i>).</p>
</li>
<li><a name="item_wordcharacters"></a><a name="wordcharacters"></a><b>WordCharacters *string of characters*</b>
</li>
<li><a name="item_ignorefirstchar"></a><a name="ignorefirstchar"></a><b>IgnoreFirstChar *string of characters*</b>
</li>
<li><a name="item_ignorelastchar"></a><a name="ignorelastchar"></a><b>IgnoreLastChar *string of characters*</b>
</li>
<li><a name="item_begincharacters"></a><a name="begincharacters"></a><b>BeginCharacters *string of characters*</b>
</li>
<li><a name="item_endcharacters"></a><a name="endcharacters"></a><b>EndCharacters *string of characters*</b>
<p>These settings define what a word consists of to the Swish-e indexing engine.
Compiled in defaults are in <i>src/config.h</i>.</p>
<p>When indexing Swish-e uses <b>WordCharacters</b> to split up the document
into words.  Words are defined by any string of non-blank characters
that contain only the characters listed in WordCharacters.  If a string
of characters includes a character that is not in WordCharacters then
the word will be spit into two or more separate words.</p>
<p>For example:</p>
<pre class="pre-section">    WordCharacters abde</pre>
<p>Would turn "abcde" into two words "ab" and "de".</p>
<p>Next, of these words, any characters defined in <b>IgnoreFirstChar</b> are
stripped off the start of the word, and <b>IgnoreLastChar</b> characters
are stripped off the end of the word.  This allows, for example,
periods within a word (www.slashdot.com), but not at the end of
a word.  Characters in IgnoreFirstChar and IgnoreLastChar must be in
WordCharacters.</p>
<p>Finally, the resulting words MUST begin with one of the characters
listed in <b>BeginCharacters</b> and end with one of the characters listed in
<b>EndCharacters</b>.  BeginCharacters and EndCharacters must be a subset of
the characters in WordCharacters.  Often, WordCharacters, BeginCharacters
and EndCharacters will all be the same.</p>
<p>Note that the same process applies to the query while searching.</p>
<p>Getting these settings correct will take careful consideration and practice.
It's helpful to create an index of a single test file, and then look at the
words that are placed in the index (see the <code>-v 4</code>, <code>-D</code> and <code>-k</code> searching
switches).</p>
<p>Currently there is only support for eight-bit characters.</p>
<p>Example:</p>
<pre class="pre-section">    WordCharacters  .abcdefghijklmnopqrstuvwxyz
    BeginCharacters abcdefghijklmnopqrstuvwxyz
    EndCharacters   abcdefghijklmnopqrstuvwxyz
    IgnoreFirstChar .
    IgnoreLastChar  .</pre>
<p>So the string</p>
<pre class="pre-section">    Please visit http://www.example.com/path/to/file.html.</pre>
<p>will be indexed as the following words:</p>
<pre class="pre-section">    please
    visit
    http
    www.example.com
    path
    to
    file.html</pre>
<p>Which means that you can search for <code>www.example.com</code> as a single word, but
searching for just <code>example</code> will not find the document.</p>
<p>Note: when indexing HTML documents HTML entities are converted to their
character equivalents before being processed with these directives.  This is a
change from previous versions of Swish-e where you were required to include the
characters <code>0123456789&amp;#;</code> to index entities.  See also <code>ConvertHTMLEntities</code></p>
</li>
<li><a name="item_buzzwords"></a><a name="buzzwords"></a><b>Buzzwords [*list of buzzwords*|File: path]</b>
<p>The Buzzwords option allows you to specify words that will be indexed
regardless of WordCharacters, BeginCharacters, EndCharacters, stemming,
soundex and many of the other checks done on words while indexing.</p>
<p>Buzzwords are case insensitive.</p>
<p>Buzzwords should be separated by spaces and may span multiple directives.  If
the special format <code><a href="File:filename">File:filename</a></code> is used then the Buzzwords will be read
from an external file during indexing.</p>
<p>Examples:</p>
<pre class="pre-section">    Buzzwords C++ TCP/IP

    Buzzwords File: ./buzzwords.lst</pre>
<p>If a Buzzword contains search operator characters they must be backslashed
when searching.  For example:</p>
<pre class="pre-section">    Buzzwords C++ TCP/IP web=http

    ./swish-e -w 'web\=http'</pre>
<p>Buzzwords are found by splitting the text on whitespace, removing
<code>IgnoreFirstChar</code> and <code>IgnoreLastChar</code> characters from the word, and then
comparing with the list of <code>Buzzwords</code>.  Therefore, if adding <code>Buzzwords</code> to
an index you will probably want to define <code>IgnoreFirstChar</code> and
<code>IgnoreLastChar</code> settings.</p>
<p>Note: Buzzwords specific settings for <code>IgnoreFirstChar</code> and <code>IgnoreLastChar</code>
may be used in the future.</p>
</li>
<li><a name="item_compresspositions"></a><a name="compresspositions"></a><b>CompressPositions  [yes|NO]</b>
<p>This option enables zlib compression for individual word data in the index file.
The default is NO, that is the index word data is not compressed by default.</p>
<p>Enabling this option can reduced the size of the index file, but at the expense of
slower wildcard search times.</p>
<p>The default changed from YES to NO starting with version 2.4.3.</p>
</li>
<li><a name="item_ignorewords"></a><a name="ignorewords"></a><b>IgnoreWords [*list of stop words*|File: path]</b>
<p>The IgnoreWords option allows you to specify words to ignore, called
<i>stopwords</i>.  The default is to not use any stopwords.</p>
<p>Words should be separated by spaces and may span multiple directives.  If the
special format <code><a href="File:filename">File:filename</a></code> is used then the stop words will be read from
an external file during indexing.</p>
<p>In previous versions of Swish-e you could use the directive</p>
<pre class="pre-section">    IgnoreWords swishdefault - obsolete!</pre>
<p>to include a default list of compiled in stopwords.  This keyword is no
longer supported.</p>
<p>Examples:</p>
<pre class="pre-section">    IgnoreWords www http a an the of and or

    IgnoreWords File: ./stopwords.de</pre>
</li>
<li><a name="item_usewords"></a><a name="usewords"></a><b>UseWords [*list of words*|File: path]</b>
<p>UseWords defines the words that Swish-e will index.  <b>Only</b> the words
listed will be indexed.</p>
<p>You can specify a list of words following the directive (you may specify more
than one <code>UseWords</code> directive in a config file), and/or use the <code>File:</code> form
to specify a path to a file containing the words:</p>
<pre class="pre-section">    UseWords perl python pascal fortran basic cobal php
    UseWords File: /path/to/my/wordlist</pre>
<p>Please drop the Swish-e list a note if you actually use this feature.
It may be removed from future versions.</p>
</li>
<li><a name="item_ignorelimit"></a><a name="ignorelimit"></a><b>IgnoreLimit *integer integer*</b>
<p>This automatically omits words that appear too often in the files (these
words are called stopwords). Specify a whole percentage and a number,
such as "80 256". This omits words that occur in over 80% of the files
and appear in over 256 files. Comment out to turn off auto-stopwording.</p>
<pre class="pre-section">    IgnoreLimit 50 1000</pre>
<p>Swish-e must do extra processing to adjust the entire index when this
feature is used.  It is recommended that instead of using this feature
that you decided what words are stopwords and add them to <b>IngoreWords</b>
in your configuration file.  To do this, use IgnoreLimit one time and
note the stop words that are found while indexing.  Add this list to
IgnoreWords, and then remove IgnoreLimit from the configuration file.</p>
</li>
<li><a name="item_ignoremetatags"></a><a name="ignoremetatags"></a><b>IgnoreMetaTags *list of names*</b>
<p><code>IgnoreMetaTags</code> defines a list of metatags to ignore while indexing XML files
(and HTML files if using libxml2 for parsing HTML).  All text within the tags
will be ignored -- both for indexing (<code>MetaNames</code>) and properties
(<code>PropertyNames</code>).  To still parse properties, yet do not index the text, see
<code>UndefinedMetaTags</code>.</p>
<p>This option is useful to avoid indexing specific data from a file.
For example:</p>
<pre class="pre-section">    &lt;person&gt;
        &lt;first_name&gt;
            William
        &lt;/first_name&gt; &lt;last_name&gt;
            Shakespeare
        &lt;/last_name&gt; &lt;updated_date&gt;
            April 25, 1999
        &lt;/updated_date&gt;
    &lt;/person&gt;</pre>
<p>In the above example you might <b>not</b> want to index the updated date,
and therefore prevent finding this record by searching</p>
<pre class="pre-section">    -w 'person=(April)'</pre>
<p>This is solved by:</p>
<pre class="pre-section">    IgnoreMetaTags updated_date</pre>
<p>See also <code>UndefinedMetaTags</code>.</p>
</li>
<li><a name="item_ignorenumberchars"></a><a name="ignorenumberchars"></a><b>IgnoreNumberChars *list of characters*</b>
<p>Experimental Feature</p>
<p>This experimental feature can be used to define a set of characters that
describe a number.  If a word is found to contain only those characters it will
not be indexed.  The characters listed must be part of <code>WordCharacters</code>
settings.  In other words, the "word" checked is a word that Swish-e would
otherwise index.</p>
<p>For example,</p>
<pre class="pre-section">    IgnoreNumberChars 0123456789$.,</pre>
<p>Then Swish-e would not index the following:</p>
<pre class="pre-section">    123
    123,456.78
    $123.45</pre>
<p>You might be tempted to avoid indexing hex numbers with:</p>
<pre class="pre-section">    IgnoreNumberChars 0123456789abcdef</pre>
<p>which will not index 0D31, but will also not index the word "bad".</p>
<p>This is an experimental feature that may change in future versions.
One possible change is to use regular expressions instead.</p>
</li>
<li><a name="item_indexcomments"></a><a name="indexcomments"></a><b>IndexComments [NO|yes]</b>
<p>This option allows the user decide if to index the contents of HTML
comments.  Default is no. Set to yes if comment indexing is required.</p>
<pre class="pre-section">    IndexComments yes</pre>
<p>Note: This is a change in the default behavior prior to version 2.2.</p>
</li>
<li><a name="item_translatecharacters"></a><a name="translatecharacters"></a><b>TranslateCharacters [*string1 string2*|:ascii7:]</b>
<p>The TranslateCharacters directive maps the characters in string1 to the
characters listed in string2.</p>
<p>For example:</p>
<pre class="pre-section">    # This will index a_b as a-b and ámo as amo
    TranslateCharacters _á -a</pre>
<p><code>TranslateCharacters :ascii7:</code> is a predefined set of characters that will
translate eight bit characters to ascii7 characters.  Using the :ascii7: rule
will translate "Ääç" to "aac". This means: searching "Çelik", "çelik" or
"celik" will all match the same word.</p>
<p>TranslateCharacters is done early in the indexing process, after
converting HTML entities but before splitting the input text into words
based on <b>WordCharacters</b>.  So characters you are translating <i>from</i>
do not need to be listed in word characters.</p>
<p>The same character translations take place when searching.</p>
</li>
<li><a name="item_bumppositioncountercharacters"></a><a name="bumppositioncountercharacters"></a><b>BumpPositionCounterCharacters *string*</b>
<p>When indexing Swish-e assigns a word position to each word.  This enables
phrase searching.  There may be cases where you would like to prevent
phrase matching.  The BumpPositionCounterCharacters directive allows
you to specify a set of characters that when found in the text will
increment the word position -- effectively preventing phrase matches
across that character.</p>
<p>For example, if you have a tag:</p>
<pre class="pre-section">    &lt;subjects&gt;
        computer programming | apple computers
    &lt;/subjects&gt;</pre>
<p>You might want to prevent matching "programming apple" in that meta name.</p>
<pre class="pre-section">    BumpPositionCounterCharacters |</pre>
<p>There is no default, and you may list a string of characters.</p>
</li>
<li><a name="item_dontbumppositiononendtags"></a><a name="dontbumppositiononendtags"></a><b>DontBumpPositionOnEndTags *list of names*</b>
</li>
<li><a name="item_dontbumppositiononstarttags"></a><a name="dontbumppositiononstarttags"></a><b>DontBumpPositionOnStartTags *list of names*</b>
<p>Since metatags are typically separate data fields, the word position counter is
automatically bumped between metatags (actually, bumped when a start tag is
found and when an end tag is found).  This prevents matching a phrase that
spans more than one metaname.  <code>DontBumpPositionOnEndTags</code> and
<code>DontBumpPositionOnStartTags</code> disables this feature for the listed metanames.</p>
<p>For example,</p>
<pre class="pre-section">    &lt;person&gt;
        &lt;first_name&gt;
            William
        &lt;/first_name&gt;
        &lt;last_name&gt;
            Shakespeare
        &lt;/last_name&gt;
        &lt;updated_date&gt;
            April 25, 1999
        &lt;/updated_date&gt;
    &lt;/person&gt;</pre>
<p>In the configuration file:</p>
<pre class="pre-section">    DontBumpPositionOnEndTags first_name
    DontBumpPositionOnStartTags last_name</pre>
<p>This configuration allows this phrase search</p>
<pre class="pre-section">    -w 'person=("william shakespeare")'</pre>
<p>but this phrase search will fail</p>
<pre class="pre-section">    -w 'person=("shakespeare april")'</pre>
</li>
</ul>

    </div>

    <div class="sub-section">
        
<h2><a name="directives_for_the_file_access_method_only"></a>Directives for the File Access method only</h2>

<p>Some directives have different uses depending on the source of the
documents.  These directives are only valid when using the <b>File system</b>
method of indexing.</p>
<ul>
<li><a name="item_indexonly"></a><a name="indexonly"></a><b>IndexOnly *list of file suffixes*</b>
<p>This directive specifies the allowable file suffixes (extensions) while
indexing.  The default is to index all files specified in <b>IndexDir</b>.</p>
<pre class="pre-section">    # Only index .html .htm and .q files
    IndexOnly .html .htm .q</pre>
<p><code>IndexOnly</code> checks that the file end in the characters listed.  It does not
check "extensions".  <code>IndexOnly</code> is tested right before <code>FileRules</code> is
processed.</p>
</li>
<li><a name="item_followsymlinks"></a><a name="followsymlinks"></a><b>FollowSymLinks [yes|NO]</b>
<p>Put "yes" to follow symbolic links in indexing, else "no".  Default is no.</p>
<pre class="pre-section">    FollowSymLinks no
    FollowSymLinks yes</pre>
<p>Note that when set to <code>no</code> extra stat(2) system calls must be made for each
file.  For large number of files you may see a small reduction in indexing time
by setting this to <code>yes</code>.</p>
<p>See also the <code>-l</code> switch in <a href="swish-run.html">SWISH-RUN</a>.</p>
</li>
<li><a name="item_filerules"></a><a name="filerules"></a><b>FileRules [type] [contains|is|regex] *regular expression*</b>
</li>
<li><a name="item_filematch"></a><a name="filematch"></a><b>FileMatch [type] [contains|is|regex] *regular expression*</b>
<p>FileRules and FileMatch are used to, respectively, exclude and include files
and directories to index.  Since, by default, Swish-e indexes all files and
recurses all directories (but see also <code>FollowSymLinks</code>) you will typically
only use <code>FileRules</code> to exclude files or directories.  <code>FileMatch</code> is useful
in a few cases, for example, to override the behavior of <code>IndexOnly</code>.  Some
examples are included below.</p>
<p>Except for <code>FileRules title ...</code>, this feature is only available for file
access method (-S fs), which is the default indexing mode.  Also, any pathname
modification with <code>ReplaceRules</code> happens after the check for <code>FileRules</code>.
(It's unlikely that you would exclude files with <code>FileRules</code> based on text you
added with <code>ReplaceRules</code>!)</p>
<p>The regular expression is a C regex.h extended regular expression.
You may supply more than one regular expression per line, or use
separate directives.  Preceding the regular expression with the word
"not" negates the match.</p>
<p>The regular expression is compared against <b>[type]</b> as described below.</p>
<p>For historical reasons, you can specify <code>contains</code> or <code>is</code>.  <code>is</code> simply
forces the regular expression to match at the start and end of the string (by
internally prepending "^" and appending "$" to the regular expression).</p>
<p>The <code>regex</code> option requires delimiter characters:</p>
<pre class="pre-section">    FileRules title regex /^private/i</pre>
<p>The only advantage of <code>regex</code> is if you want to do case insensitive matches,
or simply like your regular expressions to look like perl regular expressions.
You must use matching delimiters; (), {}, and [], are not currently supported
for no good reason other than laziness.</p>
<p>Use quotes (" or ') around a pattern if it contains any white space.
Note that the backslash character becomes the escape character within
quotes.</p>
<p>For example, these sets generate the same regular expressions.</p>
<pre class="pre-section">    FileRules title is hello
    FileRules title contains ^hello$
    FileRules title regex /^hello$/</pre>
<p>These all need quotes due to the included space character</p>
<pre class="pre-section">    FileRules title is "hello there"
    FileRules title contains "^hello there$"
    FileRules title regex "!^hello there$!"</pre>
<p>These show how the backslash must be doubled inside of quotes.
Swish-e converts a double-backslash into a single backslash, and then
passes that single onto the regular expression compiler.</p>
<pre class="pre-section">    FileRules filename regex /\.pdf/
    FileRules filename regex "/\\.pdf/"

    FileRules filename regex !hello\\there!     # need double for real backslash 
    FileRules filename regex "!hello\\\\there!" # need double-double inside of quotes</pre>
<p><b>Matching Types</b></p>
<p>The following types of match strings my be supplied:</p>
<pre class="pre-section">    FileRules pathname
    FileRules dirname
    FileRules filename
    FileRules directory
    FileRules title

    FileMatch pathname
    FileMatch filename
    FileMatch dirname
    FileMatch directory</pre>
<p><b>pathname</b> matches the regular expression against the current pathname.  The
pathname may or may not be absolute depending on what you supplied to
<code>IndexDir</code>.</p>
<p>Example:</p>
<pre class="pre-section">    # Don't index paths that contain private or hidden
    FileRules pathname contains (private|hidden)

    # Same thing
    FileRules pathname regex /(private|hidden)/

    # Don't index exe files
    FileRules pathname contains \.exe$</pre>
<p><b>dirname</b> and <b>filename</b> split the path name by the last delimiter
character into a directory name, and a file name.  Then these are compared
against the patterns supplied.  Directory names do <b>not</b> have a trailing
slash.  All path names use the forward slash as a delimiter within Swish-e.</p>
<p>Example:</p>
<pre class="pre-section">    # Same as last example - don't index *.exe files.
    FileRules filename contains \.exe$

    # Don't index any file called test.html files
    FileRules filename contains ^test\.html$

    # Same thing
    FileRules filename is test\.html

    # Don't index any directories that contain "old"  (/usr/local/myold/docs)
    FileRules dirname contains old

    # Don't index any directories that contain the path segment "old" (/usr/local/old/foo)
    FileRules dirname contains /old/  

    # Index only .htm, .html, plus any all-digit file names
    IndexOnly .htm .html
    FileMatch filename contains ^\d+$

    # Same as previous, but maybe a little slower
    FileRules filename regex not !\.(htm|html)$!
    FileMatch filename contains ^\d+$</pre>
<p>Swish-e checks these settings in the order of <code>pathname</code>, <code>dirname</code>, and
<code>filename</code>, and <code>FileMatch</code> patterns are checked before <code>FileRules</code>, in
general.  This allows you to exclude most files with <code>FileRules</code>, yet allow in
a few special cases with <code>FileMatch</code>. For example:</p>
<pre class="pre-section">    # Exclude all files of .exe, .bin, and .bat
    FileRules filename contains \.(exe|bin|bat)$
    # But, let these two in
    FileMatch filename is baseball\.bat incoming_mail\.bin

    # Same, but as a single pattern
    FileMatch filename is (baseball\.bat|incoming_mail\.bin)</pre>
<p>The <code>directory</code> type is somewhat unique. When Swish-e recurses into a
directory it will compare all the <i>files</i> in the directory with the pattern
and then decide if that entire directory should or should not be indexed (or
recursed).  Note that you are matching against file names in a directory -- and
some of those names may be directory names.</p>
<p>A <code>FileRules directory</code> match will cause Swish-e to ignore all files and
sub-directories in the current directory.</p>
<p>Warning: A match with <code>FileMatch directory</code> says to index <b>everything</b> in the
*current* directory and <b>ignore</b> any FileRules for this directory.</p>
<p>Example:</p>
<pre class="pre-section">    # Don't index any directories (and sub directories) that contain
    # a file (or sub-directory) called "index.skip"
    FileRules directory contains ^index\.skip$

    # Don't index directories that contain a .htaccess file.
    FileRules directory contains ^\.htaccess</pre>
<p>Note: While <i>processing</i> directories, Swish-e will ignore any files or
directories that begin with a dot (".").  You may index files or directories
that begin with a dot by specifying their name with <code>IndexDir</code> or <code>-i</code>.</p>
<p><code>title</code> checks for a pattern match in an HTML title.</p>
<p>Example:</p>
<pre class="pre-section">    FileRules title contains construction example pointers

    # This example says to ignore case
    FileRules title regex "/^Internal document/i"</pre>
<p>Note: <code>FileRules title</code> works for any input method (fs, prog, or http) that is
parsed as HTML, and where a title was found in the document.</p>
<p>In case all this seems a bit confusing, processing a directory happens
in the following order.</p>
<p>First the directory name is checked:</p>
<pre class="pre-section">    FileRules dirname - reject entire directory if matches</pre>
<p>Next the directory is scanned and each file name (which might be the
name of a sub-directory) is checked:</p>
<pre class="pre-section">    FileRules directory - reject entire dir if *any* files match
    FileMatch directory - accept entire dir if *any* files match</pre>
<p>Then, unless <code>FileMatch directory</code> matched, each file is tested with
FileMatch.  A match says to index the file without further testing (i.e.
overrides FileRules and IndexOnly):</p>
<pre class="pre-section">    FileMatch pathname  \
    FileMatch dirname   - file is accepted if any match
    FileMatch filename  /</pre>
<p>otherwise    </p>
<pre class="pre-section">    IndexOnly - file is checked for the correct file extension

    FileRules pathname  \
    FileRules dirname   - file is rejected if any match
    FileRules filename  /</pre>
<p>finally, the file is indexed.</p>
<p>Files (not directories) listed with <code>IndexDir</code> or <code>-i</code> are processed in a
similar way:</p>
<pre class="pre-section">    FileMatch pathname  \
    FileMatch dirname   - file is accepted if any match
    FileMatch filename  /</pre>
<p>otherwise, the file is rejected if it doesn't have the correct extension
or a FileRules matches.</p>
<pre class="pre-section">    IndexOnly - file is checked for the correct file extension

    FileRules pathname  \
    FileRules dirname   - file is rejected if any match
    FileRules filename  /</pre>
<p>Note:  If things are not indexing as you expect, create a directory with some
test files and use the <code>-T regex</code> trace option to see how file names are
checked.  Start with very simple tests!</p>
</li>
</ul>

    </div>

    <div class="sub-section">
        
<h2><a name="directives_for_the_http_access_method_only"></a>Directives for the HTTP Access Method Only</h2>

<p>The HTTP Access method is enabled by the "-S http" switch when indexing.  It works by
running a Perl program called SwishSpider which fetches documents from a web server.</p>
<p>Only text files (content-type of "text/*") are indexed with the HTTP Access Method.
Other document types (e.g. PDF or MSWord) may be indexed as well.  The SwishSpider will
attempt to make use of the SWISH::Filter module (included with the Swish-e distribution) to
convert documents into a format that Swish-e can index.</p>
<p>Note: The -S prog method of spidering (using spider.pl) can be a replacement for the -S http method.
It offers more configuration options and better spidering speed.</p>
<p>These directives below are available when using the HTTP Access Method of indexing.</p>
<ul>
<li><a name="item_maxdepth"></a><a name="maxdepth"></a><b>MaxDepth *integer*</b>
<p>MaxDepth defines how many links the spider should follow before stopping.
A value of 0 configures the spider to traverse all links.  The default
is MaxDepth 0.</p>
<pre class="pre-section">    MaxDepth 5</pre>
<p>Note: The default was changed from 5 to 0 in release 2.4.0</p>
</li>
<li><a name="item_delay"></a><a name="delay"></a><b>Delay *seconds*</b>
<p>The number of seconds to wait between issuing requests to a server.
This setting allows for more friendly spidering of remote sites.
The default is 5 seconds.</p>
<pre class="pre-section">    Delay 1</pre>
<p>Note: The default was changed from 60 to 5 seconds in release 2.4.0</p>
</li>
<li><a name="item_tmpdir"></a><a name="tmpdir"></a><b>TmpDir *path*</b>
<p>The location of a writable temp directory on your system.  The HTTP access
method tells the Perl helper to place its files in this location, and the <code>-e</code>
switch causes Swish-e to use this directory while indexing.  There is no
default.</p>
<pre class="pre-section">    TmpDir /tmp/swish</pre>
<p>If this directory does not exist or is not writable Swish-e will fail
with an error during indexing.</p>
<p>Note, the environment variables of <code>TMPDIR</code>, <code>TMP</code>, and <code>TEMP</code> (in that
order) will <b>override</b> this setting.</p>
</li>
<li><a name="item_spiderdirectory"></a><a name="spiderdirectory"></a><b>SpiderDirectory *path*</b>
<p>The location of the Perl helper script called <i>swishspider</i>.  If you
use a relative directory, it is relative to your directory when you run
Swish-e, not to the directory that Swish-e is in.
The default is the location swishspider was installed.
Normally this does not need to be set.</p>
<pre class="pre-section">    SpiderDirectory /usr/local/swish</pre>
</li>
<li><a name="item_equivalentserver"></a><a name="equivalentserver"></a><b>EquivalentServer *server alias*</b>
<p>Often times the same site may be referred to by different names.
A common example is that often <a href="http://www.some-server.com">http://www.some-server.com</a> and
<a href="http://some-server.com">http://some-server.com</a> are the same.  Each line should have a list of
all the method/names that should be considered equivalent.  Multiple
EquivalentServer directives may be used.  Each directive defines its
own set of equivalent servers.</p>
<pre class="pre-section">    EquivalentServer http://library.berkeley.edu http://www.lib.berkeley.edu
    EquivalentServer http://sunsite.berkeley.edu:2000 http://sunsite.berkeley.edu</pre>
</li>
</ul>

    </div>

    <div class="sub-section">
        
<h2><a name="directives_for_the_prog_access_method_only"></a>Directives for the prog Access Method Only</h2>

<p>This section details the directives that are only available for the
"prog" document source feature of Swish-e.  The "prog" access method runs
an external program that "feeds" documents to Swish-e.  This allows indexing
and filtering of documents from any source.</p>
<p>See <a href="swish-run.html#item_prog">prog - general purpose access method</a> in the
SWISH-RUN man page for more information.</p>
<p>A number of example programs for use with the "prog" access method are
provided in the <i>prog-bin</i> directory.  Please see those example if you
have questions about implementing a "prog" input program.</p>
<ul>
<li><a name="item_swishprogparameters"></a><a name="swishprogparameters"></a><b>SwishProgParameters *list of parameters*</b>
<p>This is a list of parameters that will be sent to the external program
when running with the "prog" document source method.</p>
<pre class="pre-section">    SwishProgParameters /path/to/config hello there
    IndexDir /path/to/program.pl</pre>
<p>Then running:</p>
<pre class="pre-section">    swish-e -c config -S prog</pre>
<p>Swish-e will execute <code>/path/to/program.pl</code> and pass <code>/path/to/config hello
there</code> as three command line arguments to the program.  This directive makes it
easy to pass settings from the Swish-e configuration file to the external
program.</p>
<p>For example, the <code>spider.pl</code> program (included in the <code>prog-bin</code> directory)
uses the <code>SwishProgParameters</code> to specify what file to read for configuration
information.</p>
<pre class="pre-section">    SwishProgParameters spider.config
    IndexDir ./spider.pl</pre>
<p>The <code>spider.pl</code> program also has a default action so you can avoid using a
configuration file:</p>
<pre class="pre-section">    SwishProgParameters default http://www.swishe.org/ http://some.other.site/
    IndexDir ./spider.pl</pre>
<p>And the spider program will use default settings for spidering those sites.</p>
<p>Swish-e can read documents from standard input, so another way to run an external program
with parameters is:</p>
<pre class="pre-section">    ./spider.pl spider.conf | ./swish-e -S prog -i stdin</pre>
</li>
</ul>
<p><b>Notes when using MS Windows</b></p>
<p>You should use unix style path separators to specify your external program.
Swish will convert forward slashes to backslashes before calling the external
program.  This is only true for the program name specified with <code>IndexDir</code> or
the <code>-i</code> command line option.</p>
<p>In addition, Swish-e will make sure the program specified actually exists,
which means you need to use the full name of the program.</p>
<p>For example, to run the perl spider program <i>spider.pl</i> you would need
a Swish-e configuration file such as:</p>
<pre class="pre-section">    IndexDir e:/perl/bin/perl.exe
    SwishProgParameters prog-bin/spider.pl default http://swish-e.org</pre>
<p>and run indexing with the command:</p>
<pre class="pre-section">    swish-e -c swish.cfg -S prog -v 9</pre>
<p>The <code>IndexDir</code> command tells Swish-e the name of the program to run.  Under
unix you can just specify the name of the script, since unix will figure out
the program from the first line of the script.</p>
<p>The <code>SwishProgParameters</code> are the parameters passed to the program specified
by <code>IndexDir</code> (perl.exe in this case).  The first parameter is the perl script
to run (<i>prog-bin/spider.pl</i>).  Perl passes the rest of the parameters
directly to the perl script.  The second parameter <i>default</i> tells the
<i>spider.pl</i> program to use default settings for spidering (or you could
specify a spider config file -- see <code>perldoc spider.pl</code> for details), and
lastly, the URL is passed into the spider program.</p>

    </div>

    <div class="sub-section">
        
<h2><a name="document_filter_directives"></a>Document Filter Directives</h2>

<p>Internally, Swish-e knows how to parse only text, HTML, and XML documents.
With "filters" you can index other types of documents.  For example,
if all your web pages are in gzip format a filter can uncompress these
on the fly for indexing.</p>
<p>You may wish to read the Swish-e FAQ question on filtering before continuing
here.  <a href="swish-faq.html#how_do_i_filter_documents_">How Do I filter documents?</a></p>
<p>There are two suggested methods for filtering.</p>

    </div>

    <div class="sub-section">
        
<h3><a name="filtering_with_swish_filter"></a>Filtering with SWISH::Filter</h3>

<p>The Swish-e distribution includes a Perl module called SWISH::Filter and individual
filters located in the <i>filters</i> directory.  This system uses plug-in filters to
extend the types of documents that Swish-e can index.  The plug-in filters do not
actually do the filtering, but rather provide a standard interface for accessing programs that
can filter or convert documents.  The programs that do the filtering are not part of
the Swish-e distribution; they must be downloaded and installed separately.</p>
<p>The advantage of this method is that new filtering methods can be installed easily.</p>
<p>This system is designed to work with the -S http and -prog methods, but may
also be used with the <code>FileFilter</code> feature and -S fs indexing method.  See
<i>$prefix/share/doc/swish-e/examples/filter-bin/swish_filter.pl</i> for an
example.</p>
<p>See the <i>filters/README</i> file for more information.</p>

    </div>

    <div class="sub-section">
        
<h3><a name="filtering_with_the_filefilter_feature"></a>Filtering with the FileFilter feature</h3>

<p>A filter is an external program that Swish-e executes while processing
a document of a given type.  Swish-e will execute the filter program
for each file that matches the file suffix (extension) set in the
<b>FileFilter</b> or <b>FileFilterMatch</b> directives.  <b>FileFilterMatch</b>
matches using regular expressions and is described below.</p>
<p>Filters may be used with any type of input method (i.e. -S fs, -S http, or -S prog).
But because</p>
<p>Swish-e calls the external program passing as <b>default</b> arguments:</p>
<ul>
<li><a name="item__0"></a><a name="_0"></a><b>$0 </b>
<p>the name of the filter program</p>
</li>
<li><a name="item__1"></a><a name="_1"></a><b>$1</b>
<p>the physical path name of the file to read.  This may be a temporary
file location if indexing by the http method.</p>
</li>
<li><a name="item__2"></a><a name="_2"></a><b>$2</b>
<p>When indexing under the file system this will be the same as $1 (the
path to the source file), but when indexing under the http method this
will be the URL of the source document.</p>
</li>
</ul>
<p>Swish-e can also pass other parameters to the filter program.  These
parameters can be defined using the <b>FileFilter</b> or <b>FileFilterMatch</b>
directives.  See Filter Options below.</p>
<p>The filter program must open the file, process its contents, and return
it to Swish-e by printing to STDOUT.</p>
<p>Note that this can add a significant amount of time to the indexing
process if your external program is a perl or shell script.  If you
have many files to filter you should consider writing your filter in C
instead of a shell or perl script, or using the "prog" Access Method
along with SWISH::Filter.</p>
<ul>
<li><a name="item_filterdir"></a><a name="filterdir"></a><b>FilterDir  *path-to-directory*</b>
<p>Deprecated.</p>
<p>This is the path to a directory where the filter programs are stored.
Swish-e looks in this directory to find the filter specified in the
<b>FileFilter</b> directive.</p>
<p>This directive is not needed if the filter program can be found in
your system's path.  Even if your filter is not in your system's path
you can specify the full path to the filter in the FileFilter or
FileFilterMatch directives.</p>
<p>Example:</p>
<pre class="pre-section">    FilterDir /usr/local/swish/filters</pre>
</li>
<li><a name="item_filefilter"></a><a name="filefilter"></a><b>FileFilter   *suffix*   "filter-prog"   ["filter-options"]</b>
<p>This maps file suffix (extension) to a filter program.  If <i>filter-prog</i>
starts with a directory delimiter (absolute path), Swish-e doesn't use
the FilterDir settings, but uses the given <i>filter-prog</i> path directly.</p>
<p>On systems that have a working fork(2) system call the filter program
is run by forking swish then executing the filter.  This mean the shell
is not used for running the filter and no arguments are passed through the
shell.</p>
<p>On other systems (e.g. Windows) the arguments are double-quoted and
popen(3) is used to run the program.  This does pass argument though
the shell and may be a security concern depending on the abilities of
the shell.</p>
<p>Filter options:</p>
<p>Filter options are a string passed as arguments to the <i>filter-prog</i>.
Filter options can contain variables, replaced by Swish-e.  If you omit
<i>filter-options</i> Swish-e will use default parameters for the options
listed above.</p>
<pre class="pre-section">    Default:      %p %P
    Which means:  pass   "workfile path" and "documentfile path" to filter.</pre>
<p>Variables in filter options:</p>
<pre class="pre-section">    %%   =  %
    %P   =  Full document pathname (e.g. URL, or path on filesystem)  
    %p   =  Full pathname to work file (maybe a tmpfile or the real document path on filesystem)
    %F   =  Filename stripped from full document pathname
    %f   =  Filename stripped from "work" pathname
    %D   =  Directoryname stripped from full document pathname
    %d   =  Directoryname stripped from full "work" pathname</pre>
<p>Examples of strings passed:</p>
<pre class="pre-section">    %P =  document pathname:  http://myserver/path1/mydoc.txt
    %p =  work pathname:      /tmp/tmp.1234.mydoc.txt
    %F =     mydoc.txt
    %f =     tmp.1234.mydoc.txt
    %D =     http://myserver/path1
    %d =     /tmp</pre>
<p><b>Notes when using MS Windows</b></p>
<p>Windows uses double quotes to escape shell metacharacters, so if you need
to use quotes then use single quotes around the entire option string.</p>
<pre class="pre-section">    FileFiler .mydoc mydocfilter.exe '--title "text with spaces"'</pre>
<p>You can specify the filter program using forward slashes (unix style).
Swish will convert the slashes to backslashes before running your program.</p>
<pre class="pre-section">    FileFilter .mydoc     c:/some/path/mydocfilter.exe  '-d "%d" -example -url "%P" "%f"'</pre>
<p>Examples of filters:</p>
<pre class="pre-section">    FileFilter .doc       /usr/local/bin/catdoc "-s8859-1 -d8859-1 %p"
    FileFilter .pdf       pdftotext   "%p -"
    FileFilter .html.gz   gzip  "-c %p"
    FileFilter .mydoc     "/some/path/mydocfilter"  "-d %d -example -url %P %f"</pre>
<p>The above examples are running a <i>binary</i> filter program.  For more
complicated filtering needs you may use a scripting language such as
Perl or a shell script.  Here's some examples of calling a shell and
perl script:</p>
<pre class="pre-section">    FileFilter .pdf       pdf2html.sh
    FileFilter .ps        ghostscript-filter.pl</pre>
<p>Using a scripting language (or any language that has a large startup cost) can
<b>greatly increase the indexing time</b>.  For small indexing jobs, this may not
be an issue, but for large collections of files that require processing by a
scripting language, you may be better off using the <code>-S prog</code> access method
where the script will only be compiled once, instead of for each document.</p>
<p>Filters are probably easier to write than a <code>-S prog</code> program.  Which you
decide to use depends on your requirements.  Examples of filter scripts can be
found in the <i>filter-bin</i> directory, and examples of <code>-S prog</code> programs can
be found in the <i>prog-bin</i> directory.</p>
</li>
<li><a name="item_filefiltermatch"></a><a name="filefiltermatch"></a><b>FileFilterMatch   *filter-prog*   *filter-options*  *regex* [*regex* ...]</b>
<p>This is similar to <code>FileMatch</code> except uses regular expressions to match
against the file name.  *filter-prog* is the path to the program.  Unlike
<code>FileFilter</code> this does <b>not</b> use the <code>FilterDir</code> option.  Also unlike
<code>FileFilter</code> you <b>must</b> specify the *filter-options*.</p>
<p>Examples:</p>
<pre class="pre-section">    FileFilterMatch ./pdftotext "%p -" /\.pdf$/</pre>
<p>Note that will also match a file called ".pdf", so you may want to use
something that requires a filename that has more than just an extension.
For example:</p>
<pre class="pre-section">    FileFilterMatch ./pdftotext "%p -" /.\.pdf$/</pre>
<p>To specify more than one extension:</p>
<pre class="pre-section">    FileFilterMatch ./check_title.pl "%p" /\.html$/  /\.htm$/</pre>
<p>Or a few ways to do the same thing:</p>
<pre class="pre-section">    FileFilterMatch ./check_title.pl %p /\.(html|html)$/
    FileFilterMatch ./check_title.pl %p /\.html?$/</pre>
<p>And to ignore case:</p>
<pre class="pre-section">    FileFilterMatch ./check_title.pl %p /\.html?$/i</pre>
<p>You may also precede an expression with "not" to negate regular expression
that follow.  For example, to match files that do not have an extension:</p>
<pre class="pre-section">    FileFilterMatch ./convert "%p %P" not /\..+$/</pre>
</li>
</ul>

    </div>

    <div class="sub-section">
        
<h1><a name="document_info"></a>Document Info</h1>

<p>$Id: SWISH-CONFIG.pod 1846 2006-10-20 20:18:30Z whmoseley $</p>
<p>.</p>

    </div>















        </div><!-- /#main-copy  -->

    </div><!-- /#content-area -->


    <div id="side-bar">
        <!-- noindex -->
<ul class="menu"><li class="menuparent">

    <a class="menu" 
    href="./index.html"
    >Doc Overview</a>

<!-- noindex -->
<ul class="submenu"><li class="">

    <a class="submenu" 
    href="./readme.html"
     title="First time users">README</a>

</li><li class="">

    <a class="submenu" 
    href="./install.html"
     title="Installation and usage overview">Install</a>

</li><li class="">

    <a class="submenu" 
    href="./changes.html"
     title="Important changes from previous versions">Changes</a>

</li><li class="">

    <a class="thisfile" 
    href="./swish-config.html"
     title="Directives that go in your Swish-e configuration file">Configuration &#187;</a>

</li><li class="">

    <a class="submenu" 
    href="./swish-run.html"
     title="Command line options for Swish-e binary">Running</a>

</li><li class="">

    <a class="submenu" 
    href="./swish-search.html"
     title="Swish-e's search language">Searching</a>

</li><li class="">

    <a class="submenu" 
    href="./swish-faq.html"
    >FAQ</a>

</li><li class="">

    <a class="submenu" 
    href="./swish-bugs.html"
    >Known issues</a>

</li><li class="">

    <a class="submenu" 
    href="./swish-3.0.html"
    >The Future</a>

</li><li class="">

    <a class="submenu" 
    href="./swish-library.html"
     title="Swish-e C API">C API</a>

</li><li class="">

    <a class="submenu" 
    href="./api.html"
     title="Perl interface to the Swish-e library">Perl API</a>

</li><li class="">

    <a class="submenu" 
    href="./swish.cgi.html"
     title="Example CGI/mod_perl script">Swish.cgi</a>

</li><li class="">

    <a class="submenu" 
    href="./search.cgi.html"
     title="Example Perl script using SWISH::API">Search.cgi</a>

</li><li class="">

    <a class="submenu" 
    href="./spider.html"
     title="The Swish-e HTTP spider">Spider.pl</a>

</li><li class="">

    <a class="submenu" 
    href="./filter.html"
     title="How to index non-text documents">Filters</a>

</li></ul>
<!-- index -->


</li></ul>
<!-- index -->



    </div><!-- /#side-bar -->


</div><!-- /#body-area -->



<div id="footer">
    <!-- noindex -->
<span class="doNotPrint">
    Swish-e is distributed with <strong>no warranty</strong> under the terms of the <br />
    <a href='http://swish-e.org/license.html'>Swish-e License</a>.<br />
    Questions may be posted to the 
    <a href="http://swish-e.org/discuss.html" title="email list and list archive">Swish-e Discussion list</a>.
</span>



<p>
    <strong>URI &raquo;</strong> http://swish-e.org/ 
    &bull;

    <strong>Generated &raquo;</strong>Sun, 05 Apr 2009 02:02:27 UTC</p>
<!-- index -->

</div><!-- /#footer -->


</body>
</html>