/usr/lib/python3/dist-packages/scour/scour.py is in python3-scour 0.32-1.
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 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 | #!/usr/bin/env python
# -*- coding: utf-8 -*-
# Scour
#
# Copyright 2010 Jeff Schiller
# Copyright 2010 Louis Simard
# Copyright 2013-2014 Tavendo GmbH
#
# This file is part of Scour, http://www.codedread.com/scour/
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Notes:
# rubys' path-crunching ideas here: http://intertwingly.net/code/svgtidy/spec.rb
# (and implemented here: http://intertwingly.net/code/svgtidy/svgtidy.rb )
# Yet more ideas here: http://wiki.inkscape.org/wiki/index.php/Save_Cleaned_SVG
#
# * Process Transformations
# * Collapse all group based transformations
# Even more ideas here: http://esw.w3.org/topic/SvgTidy
# * analysis of path elements to see if rect can be used instead? (must also need to look
# at rounded corners)
# Next Up:
# - why are marker-start, -end not removed from the style attribute?
# - why are only overflow style properties considered and not attributes?
# - only remove unreferenced elements if they are not children of a referenced element
# - add an option to remove ids if they match the Inkscape-style of IDs
# - investigate point-reducing algorithms
# - parse transform attribute
# - if a <g> has only one element in it, collapse the <g> (ensure transform, etc are carried down)
# necessary to get true division
from __future__ import division
# Needed for Python 2/3 compatible print function.
from __future__ import print_function
from __future__ import absolute_import
import os
import sys
import xml.dom.minidom
import re
import math
from scour.svg_regex import svg_parser
from scour.svg_transform import svg_transform_parser
import optparse
from scour.yocto_css import parseCssString
import six
from six.moves import range
# Python 2.3- did not have Decimal
try:
from decimal import Decimal, InvalidOperation, getcontext
except ImportError:
print("Scour requires Python 2.4.", file=sys.stderr)
# Import Psyco if available
try:
import psyco
psyco.full()
except ImportError:
pass
from scour import __version__
APP = u'scour'
VER = __version__
COPYRIGHT = u'Copyright Jeff Schiller, Louis Simard, 2010'
NS = {'SVG': 'http://www.w3.org/2000/svg',
'XLINK': 'http://www.w3.org/1999/xlink',
'SODIPODI': 'http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd',
'INKSCAPE': 'http://www.inkscape.org/namespaces/inkscape',
'ADOBE_ILLUSTRATOR': 'http://ns.adobe.com/AdobeIllustrator/10.0/',
'ADOBE_GRAPHS': 'http://ns.adobe.com/Graphs/1.0/',
'ADOBE_SVG_VIEWER': 'http://ns.adobe.com/AdobeSVGViewerExtensions/3.0/',
'ADOBE_VARIABLES': 'http://ns.adobe.com/Variables/1.0/',
'ADOBE_SFW': 'http://ns.adobe.com/SaveForWeb/1.0/',
'ADOBE_EXTENSIBILITY': 'http://ns.adobe.com/Extensibility/1.0/',
'ADOBE_FLOWS': 'http://ns.adobe.com/Flows/1.0/',
'ADOBE_IMAGE_REPLACEMENT': 'http://ns.adobe.com/ImageReplacement/1.0/',
'ADOBE_CUSTOM': 'http://ns.adobe.com/GenericCustomNamespace/1.0/',
'ADOBE_XPATH': 'http://ns.adobe.com/XPath/1.0/'
}
unwanted_ns = [ NS['SODIPODI'], NS['INKSCAPE'], NS['ADOBE_ILLUSTRATOR'],
NS['ADOBE_GRAPHS'], NS['ADOBE_SVG_VIEWER'], NS['ADOBE_VARIABLES'],
NS['ADOBE_SFW'], NS['ADOBE_EXTENSIBILITY'], NS['ADOBE_FLOWS'],
NS['ADOBE_IMAGE_REPLACEMENT'], NS['ADOBE_CUSTOM'], NS['ADOBE_XPATH'] ]
svgAttributes = [
'clip-rule',
'display',
'fill',
'fill-opacity',
'fill-rule',
'filter',
'font-family',
'font-size',
'font-stretch',
'font-style',
'font-variant',
'font-weight',
'line-height',
'marker',
'marker-end',
'marker-mid',
'marker-start',
'opacity',
'overflow',
'stop-color',
'stop-opacity',
'stroke',
'stroke-dasharray',
'stroke-dashoffset',
'stroke-linecap',
'stroke-linejoin',
'stroke-miterlimit',
'stroke-opacity',
'stroke-width',
'visibility'
]
colors = {
'aliceblue': 'rgb(240, 248, 255)',
'antiquewhite': 'rgb(250, 235, 215)',
'aqua': 'rgb( 0, 255, 255)',
'aquamarine': 'rgb(127, 255, 212)',
'azure': 'rgb(240, 255, 255)',
'beige': 'rgb(245, 245, 220)',
'bisque': 'rgb(255, 228, 196)',
'black': 'rgb( 0, 0, 0)',
'blanchedalmond': 'rgb(255, 235, 205)',
'blue': 'rgb( 0, 0, 255)',
'blueviolet': 'rgb(138, 43, 226)',
'brown': 'rgb(165, 42, 42)',
'burlywood': 'rgb(222, 184, 135)',
'cadetblue': 'rgb( 95, 158, 160)',
'chartreuse': 'rgb(127, 255, 0)',
'chocolate': 'rgb(210, 105, 30)',
'coral': 'rgb(255, 127, 80)',
'cornflowerblue': 'rgb(100, 149, 237)',
'cornsilk': 'rgb(255, 248, 220)',
'crimson': 'rgb(220, 20, 60)',
'cyan': 'rgb( 0, 255, 255)',
'darkblue': 'rgb( 0, 0, 139)',
'darkcyan': 'rgb( 0, 139, 139)',
'darkgoldenrod': 'rgb(184, 134, 11)',
'darkgray': 'rgb(169, 169, 169)',
'darkgreen': 'rgb( 0, 100, 0)',
'darkgrey': 'rgb(169, 169, 169)',
'darkkhaki': 'rgb(189, 183, 107)',
'darkmagenta': 'rgb(139, 0, 139)',
'darkolivegreen': 'rgb( 85, 107, 47)',
'darkorange': 'rgb(255, 140, 0)',
'darkorchid': 'rgb(153, 50, 204)',
'darkred': 'rgb(139, 0, 0)',
'darksalmon': 'rgb(233, 150, 122)',
'darkseagreen': 'rgb(143, 188, 143)',
'darkslateblue': 'rgb( 72, 61, 139)',
'darkslategray': 'rgb( 47, 79, 79)',
'darkslategrey': 'rgb( 47, 79, 79)',
'darkturquoise': 'rgb( 0, 206, 209)',
'darkviolet': 'rgb(148, 0, 211)',
'deeppink': 'rgb(255, 20, 147)',
'deepskyblue': 'rgb( 0, 191, 255)',
'dimgray': 'rgb(105, 105, 105)',
'dimgrey': 'rgb(105, 105, 105)',
'dodgerblue': 'rgb( 30, 144, 255)',
'firebrick': 'rgb(178, 34, 34)',
'floralwhite': 'rgb(255, 250, 240)',
'forestgreen': 'rgb( 34, 139, 34)',
'fuchsia': 'rgb(255, 0, 255)',
'gainsboro': 'rgb(220, 220, 220)',
'ghostwhite': 'rgb(248, 248, 255)',
'gold': 'rgb(255, 215, 0)',
'goldenrod': 'rgb(218, 165, 32)',
'gray': 'rgb(128, 128, 128)',
'grey': 'rgb(128, 128, 128)',
'green': 'rgb( 0, 128, 0)',
'greenyellow': 'rgb(173, 255, 47)',
'honeydew': 'rgb(240, 255, 240)',
'hotpink': 'rgb(255, 105, 180)',
'indianred': 'rgb(205, 92, 92)',
'indigo': 'rgb( 75, 0, 130)',
'ivory': 'rgb(255, 255, 240)',
'khaki': 'rgb(240, 230, 140)',
'lavender': 'rgb(230, 230, 250)',
'lavenderblush': 'rgb(255, 240, 245)',
'lawngreen': 'rgb(124, 252, 0)',
'lemonchiffon': 'rgb(255, 250, 205)',
'lightblue': 'rgb(173, 216, 230)',
'lightcoral': 'rgb(240, 128, 128)',
'lightcyan': 'rgb(224, 255, 255)',
'lightgoldenrodyellow': 'rgb(250, 250, 210)',
'lightgray': 'rgb(211, 211, 211)',
'lightgreen': 'rgb(144, 238, 144)',
'lightgrey': 'rgb(211, 211, 211)',
'lightpink': 'rgb(255, 182, 193)',
'lightsalmon': 'rgb(255, 160, 122)',
'lightseagreen': 'rgb( 32, 178, 170)',
'lightskyblue': 'rgb(135, 206, 250)',
'lightslategray': 'rgb(119, 136, 153)',
'lightslategrey': 'rgb(119, 136, 153)',
'lightsteelblue': 'rgb(176, 196, 222)',
'lightyellow': 'rgb(255, 255, 224)',
'lime': 'rgb( 0, 255, 0)',
'limegreen': 'rgb( 50, 205, 50)',
'linen': 'rgb(250, 240, 230)',
'magenta': 'rgb(255, 0, 255)',
'maroon': 'rgb(128, 0, 0)',
'mediumaquamarine': 'rgb(102, 205, 170)',
'mediumblue': 'rgb( 0, 0, 205)',
'mediumorchid': 'rgb(186, 85, 211)',
'mediumpurple': 'rgb(147, 112, 219)',
'mediumseagreen': 'rgb( 60, 179, 113)',
'mediumslateblue': 'rgb(123, 104, 238)',
'mediumspringgreen': 'rgb( 0, 250, 154)',
'mediumturquoise': 'rgb( 72, 209, 204)',
'mediumvioletred': 'rgb(199, 21, 133)',
'midnightblue': 'rgb( 25, 25, 112)',
'mintcream': 'rgb(245, 255, 250)',
'mistyrose': 'rgb(255, 228, 225)',
'moccasin': 'rgb(255, 228, 181)',
'navajowhite': 'rgb(255, 222, 173)',
'navy': 'rgb( 0, 0, 128)',
'oldlace': 'rgb(253, 245, 230)',
'olive': 'rgb(128, 128, 0)',
'olivedrab': 'rgb(107, 142, 35)',
'orange': 'rgb(255, 165, 0)',
'orangered': 'rgb(255, 69, 0)',
'orchid': 'rgb(218, 112, 214)',
'palegoldenrod': 'rgb(238, 232, 170)',
'palegreen': 'rgb(152, 251, 152)',
'paleturquoise': 'rgb(175, 238, 238)',
'palevioletred': 'rgb(219, 112, 147)',
'papayawhip': 'rgb(255, 239, 213)',
'peachpuff': 'rgb(255, 218, 185)',
'peru': 'rgb(205, 133, 63)',
'pink': 'rgb(255, 192, 203)',
'plum': 'rgb(221, 160, 221)',
'powderblue': 'rgb(176, 224, 230)',
'purple': 'rgb(128, 0, 128)',
'red': 'rgb(255, 0, 0)',
'rosybrown': 'rgb(188, 143, 143)',
'royalblue': 'rgb( 65, 105, 225)',
'saddlebrown': 'rgb(139, 69, 19)',
'salmon': 'rgb(250, 128, 114)',
'sandybrown': 'rgb(244, 164, 96)',
'seagreen': 'rgb( 46, 139, 87)',
'seashell': 'rgb(255, 245, 238)',
'sienna': 'rgb(160, 82, 45)',
'silver': 'rgb(192, 192, 192)',
'skyblue': 'rgb(135, 206, 235)',
'slateblue': 'rgb(106, 90, 205)',
'slategray': 'rgb(112, 128, 144)',
'slategrey': 'rgb(112, 128, 144)',
'snow': 'rgb(255, 250, 250)',
'springgreen': 'rgb( 0, 255, 127)',
'steelblue': 'rgb( 70, 130, 180)',
'tan': 'rgb(210, 180, 140)',
'teal': 'rgb( 0, 128, 128)',
'thistle': 'rgb(216, 191, 216)',
'tomato': 'rgb(255, 99, 71)',
'turquoise': 'rgb( 64, 224, 208)',
'violet': 'rgb(238, 130, 238)',
'wheat': 'rgb(245, 222, 179)',
'white': 'rgb(255, 255, 255)',
'whitesmoke': 'rgb(245, 245, 245)',
'yellow': 'rgb(255, 255, 0)',
'yellowgreen': 'rgb(154, 205, 50)',
}
default_attributes = { # excluded all attributes with 'auto' as default
# SVG 1.1 presentation attributes
'baseline-shift': 'baseline',
'clip-path': 'none',
'clip-rule': 'nonzero',
'color': '#000',
'color-interpolation-filters': 'linearRGB',
'color-interpolation': 'sRGB',
'direction': 'ltr',
'display': 'inline',
'enable-background': 'accumulate',
'fill': '#000',
'fill-opacity': '1',
'fill-rule': 'nonzero',
'filter': 'none',
'flood-color': '#000',
'flood-opacity': '1',
'font-size-adjust': 'none',
'font-size': 'medium',
'font-stretch': 'normal',
'font-style': 'normal',
'font-variant': 'normal',
'font-weight': 'normal',
'glyph-orientation-horizontal': '0deg',
'letter-spacing': 'normal',
'lighting-color': '#fff',
'marker': 'none',
'marker-start': 'none',
'marker-mid': 'none',
'marker-end': 'none',
'mask': 'none',
'opacity': '1',
'pointer-events': 'visiblePainted',
'stop-color': '#000',
'stop-opacity': '1',
'stroke': 'none',
'stroke-dasharray': 'none',
'stroke-dashoffset': '0',
'stroke-linecap': 'butt',
'stroke-linejoin': 'miter',
'stroke-miterlimit': '4',
'stroke-opacity': '1',
'stroke-width': '1',
'text-anchor': 'start',
'text-decoration': 'none',
'unicode-bidi': 'normal',
'visibility': 'visible',
'word-spacing': 'normal',
'writing-mode': 'lr-tb',
# SVG 1.2 tiny properties
'audio-level': '1',
'solid-color': '#000',
'solid-opacity': '1',
'text-align': 'start',
'vector-effect': 'none',
'viewport-fill': 'none',
'viewport-fill-opacity': '1',
}
def isSameSign(a,b): return (a <= 0 and b <= 0) or (a >= 0 and b >= 0)
scinumber = re.compile(r"[-+]?(\d*\.?)?\d+[eE][-+]?\d+")
number = re.compile(r"[-+]?(\d*\.?)?\d+")
sciExponent = re.compile(r"[eE]([-+]?\d+)")
unit = re.compile("(em|ex|px|pt|pc|cm|mm|in|%){1,1}$")
class Unit(object):
# Integer constants for units.
INVALID = -1
NONE = 0
PCT = 1
PX = 2
PT = 3
PC = 4
EM = 5
EX = 6
CM = 7
MM = 8
IN = 9
# String to Unit. Basically, converts unit strings to their integer constants.
s2u = {
'': NONE,
'%': PCT,
'px': PX,
'pt': PT,
'pc': PC,
'em': EM,
'ex': EX,
'cm': CM,
'mm': MM,
'in': IN,
}
# Unit to String. Basically, converts unit integer constants to their corresponding strings.
u2s = {
NONE: '',
PCT: '%',
PX: 'px',
PT: 'pt',
PC: 'pc',
EM: 'em',
EX: 'ex',
CM: 'cm',
MM: 'mm',
IN: 'in',
}
# @staticmethod
def get(unitstr):
if unitstr is None: return Unit.NONE
try:
return Unit.s2u[unitstr]
except KeyError:
return Unit.INVALID
# @staticmethod
def str(unitint):
try:
return Unit.u2s[unitint]
except KeyError:
return 'INVALID'
get = staticmethod(get)
str = staticmethod(str)
class SVGLength(object):
def __init__(self, str):
try: # simple unitless and no scientific notation
self.value = float(str)
if int(self.value) == self.value:
self.value = int(self.value)
self.units = Unit.NONE
except ValueError:
# we know that the length string has an exponent, a unit, both or is invalid
# parse out number, exponent and unit
self.value = 0
unitBegin = 0
scinum = scinumber.match(str)
if scinum != None:
# this will always match, no need to check it
numMatch = number.match(str)
expMatch = sciExponent.search(str, numMatch.start(0))
self.value = (float(numMatch.group(0)) *
10 ** float(expMatch.group(1)))
unitBegin = expMatch.end(1)
else:
# unit or invalid
numMatch = number.match(str)
if numMatch != None:
self.value = float(numMatch.group(0))
unitBegin = numMatch.end(0)
if int(self.value) == self.value:
self.value = int(self.value)
if unitBegin != 0 :
unitMatch = unit.search(str, unitBegin)
if unitMatch != None :
self.units = Unit.get(unitMatch.group(0))
# invalid
else:
# TODO: this needs to set the default for the given attribute (how?)
self.value = 0
self.units = Unit.INVALID
def findElementsWithId(node, elems=None):
"""
Returns all elements with id attributes
"""
if elems is None:
elems = {}
id = node.getAttribute('id')
if id != '' :
elems[id] = node
if node.hasChildNodes() :
for child in node.childNodes:
# from http://www.w3.org/TR/DOM-Level-2-Core/idl-definitions.html
# we are only really interested in nodes of type Element (1)
if child.nodeType == 1 :
findElementsWithId(child, elems)
return elems
referencingProps = ['fill', 'stroke', 'filter', 'clip-path', 'mask', 'marker-start',
'marker-end', 'marker-mid']
def findReferencedElements(node, ids=None):
"""
Returns the number of times an ID is referenced as well as all elements
that reference it. node is the node at which to start the search. The
return value is a map which has the id as key and each value is an array
where the first value is a count and the second value is a list of nodes
that referenced it.
Currently looks at fill, stroke, clip-path, mask, marker, and
xlink:href attributes.
"""
global referencingProps
if ids is None:
ids = {}
# TODO: input argument ids is clunky here (see below how it is called)
# GZ: alternative to passing dict, use **kwargs
# if this node is a style element, parse its text into CSS
if node.nodeName == 'style' and node.namespaceURI == NS['SVG']:
# one stretch of text, please! (we could use node.normalize(), but
# this actually modifies the node, and we don't want to keep
# whitespace around if there's any)
stylesheet = "".join([child.nodeValue for child in node.childNodes])
if stylesheet != '':
cssRules = parseCssString(stylesheet)
for rule in cssRules:
for propname in rule['properties']:
propval = rule['properties'][propname]
findReferencingProperty(node, propname, propval, ids)
return ids
# else if xlink:href is set, then grab the id
href = node.getAttributeNS(NS['XLINK'],'href')
if href != '' and len(href) > 1 and href[0] == '#':
# we remove the hash mark from the beginning of the id
id = href[1:]
if id in ids:
ids[id][0] += 1
ids[id][1].append(node)
else:
ids[id] = [1,[node]]
# now get all style properties and the fill, stroke, filter attributes
styles = node.getAttribute('style').split(';')
for attr in referencingProps:
styles.append(':'.join([attr, node.getAttribute(attr)]))
for style in styles:
propval = style.split(':')
if len(propval) == 2 :
prop = propval[0].strip()
val = propval[1].strip()
findReferencingProperty(node, prop, val, ids)
if node.hasChildNodes() :
for child in node.childNodes:
if child.nodeType == 1 :
findReferencedElements(child, ids)
return ids
def findReferencingProperty(node, prop, val, ids):
global referencingProps
if prop in referencingProps and val != '' :
if len(val) >= 7 and val[0:5] == 'url(#' :
id = val[5:val.find(')')]
if id in ids :
ids[id][0] += 1
ids[id][1].append(node)
else:
ids[id] = [1,[node]]
# if the url has a quote in it, we need to compensate
elif len(val) >= 8 :
id = None
# double-quote
if val[0:6] == 'url("#' :
id = val[6:val.find('")')]
# single-quote
elif val[0:6] == "url('#" :
id = val[6:val.find("')")]
if id != None:
if id in ids :
ids[id][0] += 1
ids[id][1].append(node)
else:
ids[id] = [1,[node]]
numIDsRemoved = 0
numElemsRemoved = 0
numAttrsRemoved = 0
numRastersEmbedded = 0
numPathSegmentsReduced = 0
numCurvesStraightened = 0
numBytesSavedInPathData = 0
numBytesSavedInColors = 0
numBytesSavedInIDs = 0
numBytesSavedInLengths = 0
numBytesSavedInTransforms = 0
numPointsRemovedFromPolygon = 0
numCommentBytes = 0
def removeUnusedDefs(doc, defElem, elemsToRemove=None):
if elemsToRemove is None:
elemsToRemove = []
identifiedElements = findElementsWithId(doc.documentElement)
referencedIDs = findReferencedElements(doc.documentElement)
keepTags = ['font', 'style', 'metadata', 'script', 'title', 'desc']
for elem in defElem.childNodes:
# only look at it if an element and not referenced anywhere else
if elem.nodeType == 1 and (elem.getAttribute('id') == '' or \
(not elem.getAttribute('id') in referencedIDs)):
# we only inspect the children of a group in a defs if the group
# is not referenced anywhere else
if elem.nodeName == 'g' and elem.namespaceURI == NS['SVG']:
elemsToRemove = removeUnusedDefs(doc, elem, elemsToRemove)
# we only remove if it is not one of our tags we always keep (see above)
elif not elem.nodeName in keepTags:
elemsToRemove.append(elem)
return elemsToRemove
def removeUnreferencedElements(doc, keepDefs):
"""
Removes all unreferenced elements except for <svg>, <font>, <metadata>, <title>, and <desc>.
Also vacuums the defs of any non-referenced renderable elements.
Returns the number of unreferenced elements removed from the document.
"""
global numElemsRemoved
num = 0
# Remove certain unreferenced elements outside of defs
removeTags = ['linearGradient', 'radialGradient', 'pattern']
identifiedElements = findElementsWithId(doc.documentElement)
referencedIDs = findReferencedElements(doc.documentElement)
for id in identifiedElements:
if not id in referencedIDs:
goner = identifiedElements[id]
if goner != None and goner.parentNode != None and goner.nodeName in removeTags:
goner.parentNode.removeChild(goner)
num += 1
numElemsRemoved += 1
if not keepDefs:
# Remove most unreferenced elements inside defs
defs = doc.documentElement.getElementsByTagName('defs')
for aDef in defs:
elemsToRemove = removeUnusedDefs(doc, aDef)
for elem in elemsToRemove:
elem.parentNode.removeChild(elem)
numElemsRemoved += 1
num += 1
return num
def shortenIDs(doc, prefix, unprotectedElements=None):
"""
Shortens ID names used in the document. ID names referenced the most often are assigned the
shortest ID names.
If the list unprotectedElements is provided, only IDs from this list will be shortened.
Returns the number of bytes saved by shortening ID names in the document.
"""
num = 0
identifiedElements = findElementsWithId(doc.documentElement)
if unprotectedElements is None:
unprotectedElements = identifiedElements
referencedIDs = findReferencedElements(doc.documentElement)
# Make idList (list of idnames) sorted by reference count
# descending, so the highest reference count is first.
# First check that there's actually a defining element for the current ID name.
# (Cyn: I've seen documents with #id references but no element with that ID!)
idList = [(referencedIDs[rid][0], rid) for rid in referencedIDs
if rid in unprotectedElements]
idList.sort(reverse=True)
idList = [rid for count, rid in idList]
curIdNum = 1
for rid in idList:
curId = intToID(curIdNum, prefix)
# First make sure that *this* element isn't already using
# the ID name we want to give it.
if curId != rid:
# Then, skip ahead if the new ID is already in identifiedElement.
while curId in identifiedElements:
curIdNum += 1
curId = intToID(curIdNum, prefix)
# Then go rename it.
num += renameID(doc, rid, curId, identifiedElements, referencedIDs)
curIdNum += 1
return num
def intToID(idnum, prefix):
"""
Returns the ID name for the given ID number, spreadsheet-style, i.e. from a to z,
then from aa to az, ba to bz, etc., until zz.
"""
rid = ''
while idnum > 0:
idnum -= 1
rid = chr((idnum % 26) + ord('a')) + rid
idnum = int(idnum / 26)
return prefix + rid
def renameID(doc, idFrom, idTo, identifiedElements, referencedIDs):
"""
Changes the ID name from idFrom to idTo, on the declaring element
as well as all references in the document doc.
Updates identifiedElements and referencedIDs.
Does not handle the case where idTo is already the ID name
of another element in doc.
Returns the number of bytes saved by this replacement.
"""
num = 0
definingNode = identifiedElements[idFrom]
definingNode.setAttribute("id", idTo)
del identifiedElements[idFrom]
identifiedElements[idTo] = definingNode
referringNodes = referencedIDs[idFrom]
# Look for the idFrom ID name in each of the referencing elements,
# exactly like findReferencedElements would.
# Cyn: Duplicated processing!
for node in referringNodes[1]:
# if this node is a style element, parse its text into CSS
if node.nodeName == 'style' and node.namespaceURI == NS['SVG']:
# node.firstChild will be either a CDATA or a Text node now
if node.firstChild != None:
# concatenate the value of all children, in case
# there's a CDATASection node surrounded by whitespace
# nodes
# (node.normalize() will NOT work here, it only acts on Text nodes)
oldValue = "".join([child.nodeValue for child in node.childNodes])
# not going to reparse the whole thing
newValue = oldValue.replace('url(#' + idFrom + ')', 'url(#' + idTo + ')')
newValue = newValue.replace("url(#'" + idFrom + "')", 'url(#' + idTo + ')')
newValue = newValue.replace('url(#"' + idFrom + '")', 'url(#' + idTo + ')')
# and now replace all the children with this new stylesheet.
# again, this is in case the stylesheet was a CDATASection
node.childNodes[:] = [node.ownerDocument.createTextNode(newValue)]
num += len(oldValue) - len(newValue)
# if xlink:href is set to #idFrom, then change the id
href = node.getAttributeNS(NS['XLINK'],'href')
if href == '#' + idFrom:
node.setAttributeNS(NS['XLINK'],'href', '#' + idTo)
num += len(idFrom) - len(idTo)
# if the style has url(#idFrom), then change the id
styles = node.getAttribute('style')
if styles != '':
newValue = styles.replace('url(#' + idFrom + ')', 'url(#' + idTo + ')')
newValue = newValue.replace("url('#" + idFrom + "')", 'url(#' + idTo + ')')
newValue = newValue.replace('url("#' + idFrom + '")', 'url(#' + idTo + ')')
node.setAttribute('style', newValue)
num += len(styles) - len(newValue)
# now try the fill, stroke, filter attributes
for attr in referencingProps:
oldValue = node.getAttribute(attr)
if oldValue != '':
newValue = oldValue.replace('url(#' + idFrom + ')', 'url(#' + idTo + ')')
newValue = newValue.replace("url('#" + idFrom + "')", 'url(#' + idTo + ')')
newValue = newValue.replace('url("#' + idFrom + '")', 'url(#' + idTo + ')')
node.setAttribute(attr, newValue)
num += len(oldValue) - len(newValue)
del referencedIDs[idFrom]
referencedIDs[idTo] = referringNodes
return num
def unprotected_ids(doc, options):
u"""Returns a list of unprotected IDs within the document doc."""
identifiedElements = findElementsWithId(doc.documentElement)
if not (options.protect_ids_noninkscape or
options.protect_ids_list or
options.protect_ids_prefix):
return identifiedElements
if options.protect_ids_list:
protect_ids_list = options.protect_ids_list.split(",")
if options.protect_ids_prefix:
protect_ids_prefixes = options.protect_ids_prefix.split(",")
for id in list(identifiedElements.keys()):
protected = False
if options.protect_ids_noninkscape and not id[-1].isdigit():
protected = True
if options.protect_ids_list and id in protect_ids_list:
protected = True
if options.protect_ids_prefix:
for prefix in protect_ids_prefixes:
if id.startswith(prefix):
protected = True
if protected:
del identifiedElements[id]
return identifiedElements
def removeUnreferencedIDs(referencedIDs, identifiedElements):
"""
Removes the unreferenced ID attributes.
Returns the number of ID attributes removed
"""
global numIDsRemoved
keepTags = ['font']
num = 0;
for id in list(identifiedElements.keys()):
node = identifiedElements[id]
if (id in referencedIDs) == False and not node.nodeName in keepTags:
node.removeAttribute('id')
numIDsRemoved += 1
num += 1
return num
def removeNamespacedAttributes(node, namespaces):
global numAttrsRemoved
num = 0
if node.nodeType == 1 :
# remove all namespace'd attributes from this element
attrList = node.attributes
attrsToRemove = []
for attrNum in range(attrList.length):
attr = attrList.item(attrNum)
if attr != None and attr.namespaceURI in namespaces:
attrsToRemove.append(attr.nodeName)
for attrName in attrsToRemove :
num += 1
numAttrsRemoved += 1
node.removeAttribute(attrName)
# now recurse for children
for child in node.childNodes:
num += removeNamespacedAttributes(child, namespaces)
return num
def removeNamespacedElements(node, namespaces):
global numElemsRemoved
num = 0
if node.nodeType == 1 :
# remove all namespace'd child nodes from this element
childList = node.childNodes
childrenToRemove = []
for child in childList:
if child != None and child.namespaceURI in namespaces:
childrenToRemove.append(child)
for child in childrenToRemove :
num += 1
numElemsRemoved += 1
node.removeChild(child)
# now recurse for children
for child in node.childNodes:
num += removeNamespacedElements(child, namespaces)
return num
def removeMetadataElements(doc):
global numElemsRemoved
num = 0
# clone the list, as the tag list is live from the DOM
elementsToRemove = [element for element in doc.documentElement.getElementsByTagName('metadata')]
for element in elementsToRemove:
element.parentNode.removeChild(element)
num += 1
numElemsRemoved += 1
return num
def removeNestedGroups(node):
"""
This walks further and further down the tree, removing groups
which do not have any attributes or a title/desc child and
promoting their children up one level
"""
global numElemsRemoved
num = 0
groupsToRemove = []
# Only consider <g> elements for promotion if this element isn't a <switch>.
# (partial fix for bug 594930, required by the SVG spec however)
if not (node.nodeType == 1 and node.nodeName == 'switch'):
for child in node.childNodes:
if child.nodeName == 'g' and child.namespaceURI == NS['SVG'] and len(child.attributes) == 0:
# only collapse group if it does not have a title or desc as a direct descendant,
for grandchild in child.childNodes:
if grandchild.nodeType == 1 and grandchild.namespaceURI == NS['SVG'] and \
grandchild.nodeName in ['title','desc']:
break
else:
groupsToRemove.append(child)
for g in groupsToRemove:
while g.childNodes.length > 0:
g.parentNode.insertBefore(g.firstChild, g)
g.parentNode.removeChild(g)
numElemsRemoved += 1
num += 1
# now recurse for children
for child in node.childNodes:
if child.nodeType == 1:
num += removeNestedGroups(child)
return num
def moveCommonAttributesToParentGroup(elem, referencedElements):
"""
This recursively calls this function on all children of the passed in element
and then iterates over all child elements and removes common inheritable attributes
from the children and places them in the parent group. But only if the parent contains
nothing but element children and whitespace. The attributes are only removed from the
children if the children are not referenced by other elements in the document.
"""
num = 0
childElements = []
# recurse first into the children (depth-first)
for child in elem.childNodes:
if child.nodeType == 1:
# only add and recurse if the child is not referenced elsewhere
if not child.getAttribute('id') in referencedElements:
childElements.append(child)
num += moveCommonAttributesToParentGroup(child, referencedElements)
# else if the parent has non-whitespace text children, do not
# try to move common attributes
elif child.nodeType == 3 and child.nodeValue.strip():
return num
# only process the children if there are more than one element
if len(childElements) <= 1: return num
commonAttrs = {}
# add all inheritable properties of the first child element
# FIXME: Note there is a chance that the first child is a set/animate in which case
# its fill attribute is not what we want to look at, we should look for the first
# non-animate/set element
attrList = childElements[0].attributes
for num in range(attrList.length):
attr = attrList.item(num)
# this is most of the inheritable properties from http://www.w3.org/TR/SVG11/propidx.html
# and http://www.w3.org/TR/SVGTiny12/attributeTable.html
if attr.nodeName in ['clip-rule',
'display-align',
'fill', 'fill-opacity', 'fill-rule',
'font', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch',
'font-style', 'font-variant', 'font-weight',
'letter-spacing',
'pointer-events', 'shape-rendering',
'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin',
'stroke-miterlimit', 'stroke-opacity', 'stroke-width',
'text-anchor', 'text-decoration', 'text-rendering', 'visibility',
'word-spacing', 'writing-mode']:
# we just add all the attributes from the first child
commonAttrs[attr.nodeName] = attr.nodeValue
# for each subsequent child element
for childNum in range(len(childElements)):
# skip first child
if childNum == 0:
continue
child = childElements[childNum]
# if we are on an animateXXX/set element, ignore it (due to the 'fill' attribute)
if child.localName in ['set', 'animate', 'animateColor', 'animateTransform', 'animateMotion']:
continue
distinctAttrs = []
# loop through all current 'common' attributes
for name in list(commonAttrs.keys()):
# if this child doesn't match that attribute, schedule it for removal
if child.getAttribute(name) != commonAttrs[name]:
distinctAttrs.append(name)
# remove those attributes which are not common
for name in distinctAttrs:
del commonAttrs[name]
# commonAttrs now has all the inheritable attributes which are common among all child elements
for name in list(commonAttrs.keys()):
for child in childElements:
child.removeAttribute(name)
elem.setAttribute(name, commonAttrs[name])
# update our statistic (we remove N*M attributes and add back in M attributes)
num += (len(childElements)-1) * len(commonAttrs)
return num
def createGroupsForCommonAttributes(elem):
"""
Creates <g> elements to contain runs of 3 or more
consecutive child elements having at least one common attribute.
Common attributes are not promoted to the <g> by this function.
This is handled by moveCommonAttributesToParentGroup.
If all children have a common attribute, an extra <g> is not created.
This function acts recursively on the given element.
"""
num = 0
global numElemsRemoved
# TODO perhaps all of the Presentation attributes in http://www.w3.org/TR/SVG/struct.html#GElement
# could be added here
# Cyn: These attributes are the same as in moveAttributesToParentGroup, and must always be
for curAttr in ['clip-rule',
'display-align',
'fill', 'fill-opacity', 'fill-rule',
'font', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch',
'font-style', 'font-variant', 'font-weight',
'letter-spacing',
'pointer-events', 'shape-rendering',
'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin',
'stroke-miterlimit', 'stroke-opacity', 'stroke-width',
'text-anchor', 'text-decoration', 'text-rendering', 'visibility',
'word-spacing', 'writing-mode']:
# Iterate through the children in reverse order, so item(i) for
# items we have yet to visit still returns the correct nodes.
curChild = elem.childNodes.length - 1
while curChild >= 0:
childNode = elem.childNodes.item(curChild)
if childNode.nodeType == 1 and childNode.getAttribute(curAttr) != '':
# We're in a possible run! Track the value and run length.
value = childNode.getAttribute(curAttr)
runStart, runEnd = curChild, curChild
# Run elements includes only element tags, no whitespace/comments/etc.
# Later, we calculate a run length which includes these.
runElements = 1
# Backtrack to get all the nodes having the same
# attribute value, preserving any nodes in-between.
while runStart > 0:
nextNode = elem.childNodes.item(runStart - 1)
if nextNode.nodeType == 1:
if nextNode.getAttribute(curAttr) != value: break
else:
runElements += 1
runStart -= 1
else: runStart -= 1
if runElements >= 3:
# Include whitespace/comment/etc. nodes in the run.
while runEnd < elem.childNodes.length - 1:
if elem.childNodes.item(runEnd + 1).nodeType == 1: break
else: runEnd += 1
runLength = runEnd - runStart + 1
if runLength == elem.childNodes.length: # Every child has this
# If the current parent is a <g> already,
if elem.nodeName == 'g' and elem.namespaceURI == NS['SVG']:
# do not act altogether on this attribute; all the
# children have it in common.
# Let moveCommonAttributesToParentGroup do it.
curChild = -1
continue
# otherwise, it might be an <svg> element, and
# even if all children have the same attribute value,
# it's going to be worth making the <g> since
# <svg> doesn't support attributes like 'stroke'.
# Fall through.
# Create a <g> element from scratch.
# We need the Document for this.
document = elem.ownerDocument
group = document.createElementNS(NS['SVG'], 'g')
# Move the run of elements to the group.
# a) ADD the nodes to the new group.
group.childNodes[:] = elem.childNodes[runStart:runEnd + 1]
for child in group.childNodes:
child.parentNode = group
# b) REMOVE the nodes from the element.
elem.childNodes[runStart:runEnd + 1] = []
# Include the group in elem's children.
elem.childNodes.insert(runStart, group)
group.parentNode = elem
num += 1
curChild = runStart - 1
numElemsRemoved -= 1
else:
curChild -= 1
else:
curChild -= 1
# each child gets the same treatment, recursively
for childNode in elem.childNodes:
if childNode.nodeType == 1:
num += createGroupsForCommonAttributes(childNode)
return num
def removeUnusedAttributesOnParent(elem):
"""
This recursively calls this function on all children of the element passed in,
then removes any unused attributes on this elem if none of the children inherit it
"""
num = 0
childElements = []
# recurse first into the children (depth-first)
for child in elem.childNodes:
if child.nodeType == 1:
childElements.append(child)
num += removeUnusedAttributesOnParent(child)
# only process the children if there are more than one element
if len(childElements) <= 1: return num
# get all attribute values on this parent
attrList = elem.attributes
unusedAttrs = {}
for num in range(attrList.length):
attr = attrList.item(num)
if attr.nodeName in ['clip-rule',
'display-align',
'fill', 'fill-opacity', 'fill-rule',
'font', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch',
'font-style', 'font-variant', 'font-weight',
'letter-spacing',
'pointer-events', 'shape-rendering',
'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin',
'stroke-miterlimit', 'stroke-opacity', 'stroke-width',
'text-anchor', 'text-decoration', 'text-rendering', 'visibility',
'word-spacing', 'writing-mode']:
unusedAttrs[attr.nodeName] = attr.nodeValue
# for each child, if at least one child inherits the parent's attribute, then remove
for childNum in range(len(childElements)):
child = childElements[childNum]
inheritedAttrs = []
for name in list(unusedAttrs.keys()):
val = child.getAttribute(name)
if val == '' or val == None or val == 'inherit':
inheritedAttrs.append(name)
for a in inheritedAttrs:
del unusedAttrs[a]
# unusedAttrs now has all the parent attributes that are unused
for name in list(unusedAttrs.keys()):
elem.removeAttribute(name)
num += 1
return num
def removeDuplicateGradientStops(doc):
global numElemsRemoved
num = 0
for gradType in ['linearGradient', 'radialGradient']:
for grad in doc.getElementsByTagName(gradType):
stops = {}
stopsToRemove = []
for stop in grad.getElementsByTagName('stop'):
# convert percentages into a floating point number
offsetU = SVGLength(stop.getAttribute('offset'))
if offsetU.units == Unit.PCT:
offset = offsetU.value / 100.0
elif offsetU.units == Unit.NONE:
offset = offsetU.value
else:
offset = 0
# set the stop offset value to the integer or floating point equivalent
if int(offset) == offset: stop.setAttribute('offset', str(int(offset)))
else: stop.setAttribute('offset', str(offset))
color = stop.getAttribute('stop-color')
opacity = stop.getAttribute('stop-opacity')
style = stop.getAttribute('style')
if offset in stops :
oldStop = stops[offset]
if oldStop[0] == color and oldStop[1] == opacity and oldStop[2] == style:
stopsToRemove.append(stop)
stops[offset] = [color, opacity, style]
for stop in stopsToRemove:
stop.parentNode.removeChild(stop)
num += 1
numElemsRemoved += 1
# linear gradients
return num
def collapseSinglyReferencedGradients(doc):
global numElemsRemoved
num = 0
identifiedElements = findElementsWithId(doc.documentElement)
# make sure to reset the ref'ed ids for when we are running this in testscour
for rid,nodeCount in six.iteritems(findReferencedElements(doc.documentElement)):
count = nodeCount[0]
nodes = nodeCount[1]
# Make sure that there's actually a defining element for the current ID name.
# (Cyn: I've seen documents with #id references but no element with that ID!)
if count == 1 and rid in identifiedElements:
elem = identifiedElements[rid]
if elem != None and elem.nodeType == 1 and elem.nodeName in ['linearGradient', 'radialGradient'] \
and elem.namespaceURI == NS['SVG']:
# found a gradient that is referenced by only 1 other element
refElem = nodes[0]
if refElem.nodeType == 1 and refElem.nodeName in ['linearGradient', 'radialGradient'] \
and refElem.namespaceURI == NS['SVG']:
# elem is a gradient referenced by only one other gradient (refElem)
# add the stops to the referencing gradient (this removes them from elem)
if len(refElem.getElementsByTagName('stop')) == 0:
stopsToAdd = elem.getElementsByTagName('stop')
for stop in stopsToAdd:
refElem.appendChild(stop)
# adopt the gradientUnits, spreadMethod, gradientTransform attributes if
# they are unspecified on refElem
for attr in ['gradientUnits','spreadMethod','gradientTransform']:
if refElem.getAttribute(attr) == '' and not elem.getAttribute(attr) == '':
refElem.setAttributeNS(None, attr, elem.getAttribute(attr))
# if both are radialGradients, adopt elem's fx,fy,cx,cy,r attributes if
# they are unspecified on refElem
if elem.nodeName == 'radialGradient' and refElem.nodeName == 'radialGradient':
for attr in ['fx','fy','cx','cy','r']:
if refElem.getAttribute(attr) == '' and not elem.getAttribute(attr) == '':
refElem.setAttributeNS(None, attr, elem.getAttribute(attr))
# if both are linearGradients, adopt elem's x1,y1,x2,y2 attributes if
# they are unspecified on refElem
if elem.nodeName == 'linearGradient' and refElem.nodeName == 'linearGradient':
for attr in ['x1','y1','x2','y2']:
if refElem.getAttribute(attr) == '' and not elem.getAttribute(attr) == '':
refElem.setAttributeNS(None, attr, elem.getAttribute(attr))
# now remove the xlink:href from refElem
refElem.removeAttributeNS(NS['XLINK'], 'href')
# now delete elem
elem.parentNode.removeChild(elem)
numElemsRemoved += 1
num += 1
return num
def removeDuplicateGradients(doc):
global numElemsRemoved
num = 0
gradientsToRemove = {}
duplicateToMaster = {}
for gradType in ['linearGradient', 'radialGradient']:
grads = doc.getElementsByTagName(gradType)
for grad in grads:
# TODO: should slice grads from 'grad' here to optimize
for ograd in grads:
# do not compare gradient to itself
if grad == ograd: continue
# compare grad to ograd (all properties, then all stops)
# if attributes do not match, go to next gradient
someGradAttrsDoNotMatch = False
for attr in ['gradientUnits','spreadMethod','gradientTransform','x1','y1','x2','y2','cx','cy','fx','fy','r']:
if grad.getAttribute(attr) != ograd.getAttribute(attr):
someGradAttrsDoNotMatch = True
break;
if someGradAttrsDoNotMatch: continue
# compare xlink:href values too
if grad.getAttributeNS(NS['XLINK'], 'href') != ograd.getAttributeNS(NS['XLINK'], 'href'):
continue
# all gradient properties match, now time to compare stops
stops = grad.getElementsByTagName('stop')
ostops = ograd.getElementsByTagName('stop')
if stops.length != ostops.length: continue
# now compare stops
stopsNotEqual = False
for i in range(stops.length):
if stopsNotEqual: break
stop = stops.item(i)
ostop = ostops.item(i)
for attr in ['offset', 'stop-color', 'stop-opacity', 'style']:
if stop.getAttribute(attr) != ostop.getAttribute(attr):
stopsNotEqual = True
break
if stopsNotEqual: continue
# ograd is a duplicate of grad, we schedule it to be removed UNLESS
# ograd is ALREADY considered a 'master' element
if ograd not in gradientsToRemove:
if ograd not in duplicateToMaster:
if grad not in gradientsToRemove:
gradientsToRemove[grad] = []
gradientsToRemove[grad].append( ograd )
duplicateToMaster[ograd] = grad
# get a collection of all elements that are referenced and their referencing elements
referencedIDs = findReferencedElements(doc.documentElement)
for masterGrad in list(gradientsToRemove.keys()):
master_id = masterGrad.getAttribute('id')
# print 'master='+master_id
for dupGrad in gradientsToRemove[masterGrad]:
# if the duplicate gradient no longer has a parent that means it was
# already re-mapped to another master gradient
if not dupGrad.parentNode: continue
dup_id = dupGrad.getAttribute('id')
# print 'dup='+dup_id
# print referencedIDs[dup_id]
# for each element that referenced the gradient we are going to remove
for elem in referencedIDs[dup_id][1]:
# find out which attribute referenced the duplicate gradient
for attr in ['fill', 'stroke']:
v = elem.getAttribute(attr)
if v == 'url(#'+dup_id+')' or v == 'url("#'+dup_id+'")' or v == "url('#"+dup_id+"')":
elem.setAttribute(attr, 'url(#'+master_id+')')
if elem.getAttributeNS(NS['XLINK'], 'href') == '#'+dup_id:
elem.setAttributeNS(NS['XLINK'], 'href', '#'+master_id)
styles = _getStyle(elem)
for style in styles:
v = styles[style]
if v == 'url(#'+dup_id+')' or v == 'url("#'+dup_id+'")' or v == "url('#"+dup_id+"')":
styles[style] = 'url(#'+master_id+')'
_setStyle(elem, styles)
# now that all referencing elements have been re-mapped to the master
# it is safe to remove this gradient from the document
dupGrad.parentNode.removeChild(dupGrad)
numElemsRemoved += 1
num += 1
return num
def _getStyle(node):
u"""Returns the style attribute of a node as a dictionary."""
if node.nodeType == 1 and len(node.getAttribute('style')) > 0 :
styleMap = { }
rawStyles = node.getAttribute('style').split(';')
for style in rawStyles:
propval = style.split(':')
if len(propval) == 2 :
styleMap[propval[0].strip()] = propval[1].strip()
return styleMap
else:
return {}
def _setStyle(node, styleMap):
u"""Sets the style attribute of a node to the dictionary ``styleMap``."""
fixedStyle = ';'.join([prop + ':' + styleMap[prop] for prop in list(styleMap.keys())])
if fixedStyle != '' :
node.setAttribute('style', fixedStyle)
elif node.getAttribute('style'):
node.removeAttribute('style')
return node
def repairStyle(node, options):
num = 0
styleMap = _getStyle(node)
if styleMap:
# I've seen this enough to know that I need to correct it:
# fill: url(#linearGradient4918) rgb(0, 0, 0);
for prop in ['fill', 'stroke'] :
if prop in styleMap :
chunk = styleMap[prop].split(') ')
if len(chunk) == 2 and (chunk[0][:5] == 'url(#' or chunk[0][:6] == 'url("#' or chunk[0][:6] == "url('#") and chunk[1] == 'rgb(0, 0, 0)' :
styleMap[prop] = chunk[0] + ')'
num += 1
# Here is where we can weed out unnecessary styles like:
# opacity:1
if 'opacity' in styleMap :
opacity = float(styleMap['opacity'])
# if opacity='0' then all fill and stroke properties are useless, remove them
if opacity == 0.0 :
for uselessStyle in ['fill', 'fill-opacity', 'fill-rule', 'stroke', 'stroke-linejoin',
'stroke-opacity', 'stroke-miterlimit', 'stroke-linecap', 'stroke-dasharray',
'stroke-dashoffset', 'stroke-opacity'] :
if uselessStyle in styleMap:
del styleMap[uselessStyle]
num += 1
# if stroke:none, then remove all stroke-related properties (stroke-width, etc)
# TODO: should also detect if the computed value of this element is stroke="none"
if 'stroke' in styleMap and styleMap['stroke'] == 'none' :
for strokestyle in [ 'stroke-width', 'stroke-linejoin', 'stroke-miterlimit',
'stroke-linecap', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-opacity'] :
if strokestyle in styleMap :
del styleMap[strokestyle]
num += 1
# TODO: This is actually a problem if a parent element has a specified stroke
# we need to properly calculate computed values
del styleMap['stroke']
# if fill:none, then remove all fill-related properties (fill-rule, etc)
if 'fill' in styleMap and styleMap['fill'] == 'none' :
for fillstyle in [ 'fill-rule', 'fill-opacity' ] :
if fillstyle in styleMap :
del styleMap[fillstyle]
num += 1
# fill-opacity: 0
if 'fill-opacity' in styleMap :
fillOpacity = float(styleMap['fill-opacity'])
if fillOpacity == 0.0 :
for uselessFillStyle in [ 'fill', 'fill-rule' ] :
if uselessFillStyle in styleMap:
del styleMap[uselessFillStyle]
num += 1
# stroke-opacity: 0
if 'stroke-opacity' in styleMap :
strokeOpacity = float(styleMap['stroke-opacity'])
if strokeOpacity == 0.0 :
for uselessStrokeStyle in [ 'stroke', 'stroke-width', 'stroke-linejoin', 'stroke-linecap',
'stroke-dasharray', 'stroke-dashoffset' ] :
if uselessStrokeStyle in styleMap:
del styleMap[uselessStrokeStyle]
num += 1
# stroke-width: 0
if 'stroke-width' in styleMap :
strokeWidth = SVGLength(styleMap['stroke-width'])
if strokeWidth.value == 0.0 :
for uselessStrokeStyle in [ 'stroke', 'stroke-linejoin', 'stroke-linecap',
'stroke-dasharray', 'stroke-dashoffset', 'stroke-opacity' ] :
if uselessStrokeStyle in styleMap:
del styleMap[uselessStrokeStyle]
num += 1
# remove font properties for non-text elements
# I've actually observed this in real SVG content
if not mayContainTextNodes(node):
for fontstyle in [ 'font-family', 'font-size', 'font-stretch', 'font-size-adjust',
'font-style', 'font-variant', 'font-weight',
'letter-spacing', 'line-height', 'kerning',
'text-align', 'text-anchor', 'text-decoration',
'text-rendering', 'unicode-bidi',
'word-spacing', 'writing-mode'] :
if fontstyle in styleMap :
del styleMap[fontstyle]
num += 1
# remove inkscape-specific styles
# TODO: need to get a full list of these
for inkscapeStyle in ['-inkscape-font-specification']:
if inkscapeStyle in styleMap:
del styleMap[inkscapeStyle]
num += 1
if 'overflow' in styleMap :
# overflow specified on element other than svg, marker, pattern
if not node.nodeName in ['svg','marker','pattern']:
del styleMap['overflow']
num += 1
# it is a marker, pattern or svg
# as long as this node is not the document <svg>, then only
# remove overflow='hidden'. See
# http://www.w3.org/TR/2010/WD-SVG11-20100622/masking.html#OverflowProperty
elif node != node.ownerDocument.documentElement:
if styleMap['overflow'] == 'hidden':
del styleMap['overflow']
num += 1
# else if outer svg has a overflow="visible", we can remove it
elif styleMap['overflow'] == 'visible':
del styleMap['overflow']
num += 1
# now if any of the properties match known SVG attributes we prefer attributes
# over style so emit them and remove them from the style map
if options.style_to_xml:
for propName in list(styleMap.keys()) :
if propName in svgAttributes :
node.setAttribute(propName, styleMap[propName])
del styleMap[propName]
_setStyle(node, styleMap)
# recurse for our child elements
for child in node.childNodes :
num += repairStyle(child,options)
return num
def mayContainTextNodes(node):
"""
Returns True if the passed-in node is probably a text element, or at least
one of its descendants is probably a text element.
If False is returned, it is guaranteed that the passed-in node has no
business having text-based attributes.
If True is returned, the passed-in node should not have its text-based
attributes removed.
"""
# Cached result of a prior call?
try:
return node.mayContainTextNodes
except AttributeError:
pass
result = True # Default value
# Comment, text and CDATA nodes don't have attributes and aren't containers
if node.nodeType != 1:
result = False
# Non-SVG elements? Unknown elements!
elif node.namespaceURI != NS['SVG']:
result = True
# Blacklisted elements. Those are guaranteed not to be text elements.
elif node.nodeName in ['rect', 'circle', 'ellipse', 'line', 'polygon',
'polyline', 'path', 'image', 'stop']:
result = False
# Group elements. If we're missing any here, the default of True is used.
elif node.nodeName in ['g', 'clipPath', 'marker', 'mask', 'pattern',
'linearGradient', 'radialGradient', 'symbol']:
result = False
for child in node.childNodes:
if mayContainTextNodes(child):
result = True
# Everything else should be considered a future SVG-version text element
# at best, or an unknown element at worst. result will stay True.
# Cache this result before returning it.
node.mayContainTextNodes = result
return result
def taint(taintedSet, taintedAttribute):
u"""Adds an attribute to a set of attributes.
Related attributes are also included."""
taintedSet.add(taintedAttribute)
if taintedAttribute == 'marker':
taintedSet |= set(['marker-start', 'marker-mid', 'marker-end'])
if taintedAttribute in ['marker-start', 'marker-mid', 'marker-end']:
taintedSet.add('marker')
return taintedSet
def removeDefaultAttributeValues(node, options, tainted=set()):
u"""'tainted' keeps a set of attributes defined in parent nodes.
For such attributes, we don't delete attributes with default values."""
num = 0
if node.nodeType != 1: return 0
# gradientUnits: objectBoundingBox
if node.getAttribute('gradientUnits') == 'objectBoundingBox':
node.removeAttribute('gradientUnits')
num += 1
# spreadMethod: pad
if node.getAttribute('spreadMethod') == 'pad':
node.removeAttribute('spreadMethod')
num += 1
# x1: 0%
if node.getAttribute('x1') != '':
x1 = SVGLength(node.getAttribute('x1'))
if x1.value == 0:
node.removeAttribute('x1')
num += 1
# y1: 0%
if node.getAttribute('y1') != '':
y1 = SVGLength(node.getAttribute('y1'))
if y1.value == 0:
node.removeAttribute('y1')
num += 1
# x2: 100%
if node.getAttribute('x2') != '':
x2 = SVGLength(node.getAttribute('x2'))
if (x2.value == 100 and x2.units == Unit.PCT) or (x2.value == 1 and x2.units == Unit.NONE):
node.removeAttribute('x2')
num += 1
# y2: 0%
if node.getAttribute('y2') != '':
y2 = SVGLength(node.getAttribute('y2'))
if y2.value == 0:
node.removeAttribute('y2')
num += 1
# fx: equal to rx
if node.getAttribute('fx') != '':
if node.getAttribute('fx') == node.getAttribute('cx'):
node.removeAttribute('fx')
num += 1
# fy: equal to ry
if node.getAttribute('fy') != '':
if node.getAttribute('fy') == node.getAttribute('cy'):
node.removeAttribute('fy')
num += 1
# cx: 50%
if node.getAttribute('cx') != '':
cx = SVGLength(node.getAttribute('cx'))
if (cx.value == 50 and cx.units == Unit.PCT) or (cx.value == 0.5 and cx.units == Unit.NONE):
node.removeAttribute('cx')
num += 1
# cy: 50%
if node.getAttribute('cy') != '':
cy = SVGLength(node.getAttribute('cy'))
if (cy.value == 50 and cy.units == Unit.PCT) or (cy.value == 0.5 and cy.units == Unit.NONE):
node.removeAttribute('cy')
num += 1
# r: 50%
if node.getAttribute('r') != '':
r = SVGLength(node.getAttribute('r'))
if (r.value == 50 and r.units == Unit.PCT) or (r.value == 0.5 and r.units == Unit.NONE):
node.removeAttribute('r')
num += 1
# Summarily get rid of some more attributes
attributes = [node.attributes.item(i).nodeName
for i in range(node.attributes.length)]
for attribute in attributes:
if attribute not in tainted:
if attribute in list(default_attributes.keys()):
if node.getAttribute(attribute) == default_attributes[attribute]:
node.removeAttribute(attribute)
num += 1
else:
tainted = taint(tainted, attribute)
# These attributes might also occur as styles
styles = _getStyle(node)
for attribute in list(styles.keys()):
if attribute not in tainted:
if attribute in list(default_attributes.keys()):
if styles[attribute] == default_attributes[attribute]:
del styles[attribute]
num += 1
else:
tainted = taint(tainted, attribute)
_setStyle(node, styles)
# recurse for our child elements
for child in node.childNodes :
num += removeDefaultAttributeValues(child, options, tainted.copy())
return num
rgb = re.compile(r"\s*rgb\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)\s*")
rgbp = re.compile(r"\s*rgb\(\s*(\d*\.?\d+)%\s*,\s*(\d*\.?\d+)%\s*,\s*(\d*\.?\d+)%\s*\)\s*")
def convertColor(value):
"""
Converts the input color string and returns a #RRGGBB (or #RGB if possible) string
"""
s = value
if s in list(colors.keys()):
s = colors[s]
rgbpMatch = rgbp.match(s)
if rgbpMatch != None :
r = int(float(rgbpMatch.group(1)) * 255.0 / 100.0)
g = int(float(rgbpMatch.group(2)) * 255.0 / 100.0)
b = int(float(rgbpMatch.group(3)) * 255.0 / 100.0)
s = '#%02x%02x%02x' % (r, g, b)
else:
rgbMatch = rgb.match(s)
if rgbMatch != None :
r = int( rgbMatch.group(1) )
g = int( rgbMatch.group(2) )
b = int( rgbMatch.group(3) )
s = '#%02x%02x%02x' % (r, g, b)
if s[0] == '#':
s = s.lower()
if len(s)==7 and s[1]==s[2] and s[3]==s[4] and s[5]==s[6]:
s = '#'+s[1]+s[3]+s[5]
return s
def convertColors(element) :
"""
Recursively converts all color properties into #RRGGBB format if shorter
"""
numBytes = 0
if element.nodeType != 1: return 0
# set up list of color attributes for each element type
attrsToConvert = []
if element.nodeName in ['rect', 'circle', 'ellipse', 'polygon', \
'line', 'polyline', 'path', 'g', 'a']:
attrsToConvert = ['fill', 'stroke']
elif element.nodeName in ['stop']:
attrsToConvert = ['stop-color']
elif element.nodeName in ['solidColor']:
attrsToConvert = ['solid-color']
# now convert all the color formats
styles = _getStyle(element)
for attr in attrsToConvert:
oldColorValue = element.getAttribute(attr)
if oldColorValue != '':
newColorValue = convertColor(oldColorValue)
oldBytes = len(oldColorValue)
newBytes = len(newColorValue)
if oldBytes > newBytes:
element.setAttribute(attr, newColorValue)
numBytes += (oldBytes - len(element.getAttribute(attr)))
# colors might also hide in styles
if attr in list(styles.keys()):
oldColorValue = styles[attr]
newColorValue = convertColor(oldColorValue)
oldBytes = len(oldColorValue)
newBytes = len(newColorValue)
if oldBytes > newBytes:
styles[attr] = newColorValue
numBytes += (oldBytes - len(element.getAttribute(attr)))
_setStyle(element, styles)
# now recurse for our child elements
for child in element.childNodes :
numBytes += convertColors(child)
return numBytes
# TODO: go over what this method does and see if there is a way to optimize it
# TODO: go over the performance of this method and see if I can save memory/speed by
# reusing data structures, etc
def cleanPath(element, options) :
"""
Cleans the path string (d attribute) of the element
"""
global numBytesSavedInPathData
global numPathSegmentsReduced
global numCurvesStraightened
# this gets the parser object from svg_regex.py
oldPathStr = element.getAttribute('d')
path = svg_parser.parse(oldPathStr)
# This determines whether the stroke has round linecaps. If it does,
# we do not want to collapse empty segments, as they are actually rendered.
withRoundLineCaps = element.getAttribute('stroke-linecap') == 'round'
# The first command must be a moveto, and whether it's relative (m)
# or absolute (M), the first set of coordinates *is* absolute. So
# the first iteration of the loop below will get x,y and startx,starty.
# convert absolute coordinates into relative ones.
# Reuse the data structure 'path', since we're not adding or removing subcommands.
# Also reuse the coordinate lists since we're not adding or removing any.
for pathIndex in range(0, len(path)):
cmd, data = path[pathIndex] # Changes to cmd don't get through to the data structure
i = 0
# adjust abs to rel
# only the A command has some values that we don't want to adjust (radii, rotation, flags)
if cmd == 'A':
for i in range(i, len(data), 7):
data[i+5] -= x
data[i+6] -= y
x += data[i+5]
y += data[i+6]
path[pathIndex] = ('a', data)
elif cmd == 'a':
x += sum(data[5::7])
y += sum(data[6::7])
elif cmd == 'H':
for i in range(i, len(data)):
data[i] -= x
x += data[i]
path[pathIndex] = ('h', data)
elif cmd == 'h':
x += sum(data)
elif cmd == 'V':
for i in range(i, len(data)):
data[i] -= y
y += data[i]
path[pathIndex] = ('v', data)
elif cmd == 'v':
y += sum(data)
elif cmd == 'M':
startx, starty = data[0], data[1]
# If this is a path starter, don't convert its first
# coordinate to relative; that would just make it (0, 0)
if pathIndex != 0:
data[0] -= x
data[1] -= y
x, y = startx, starty
i = 2
for i in range(i, len(data), 2):
data[i] -= x
data[i+1] -= y
x += data[i]
y += data[i+1]
path[pathIndex] = ('m', data)
elif cmd in ['L','T']:
for i in range(i, len(data), 2):
data[i] -= x
data[i+1] -= y
x += data[i]
y += data[i+1]
path[pathIndex] = (cmd.lower(), data)
elif cmd in ['m']:
if pathIndex == 0:
# START OF PATH - this is an absolute moveto
# followed by relative linetos
startx, starty = data[0], data[1]
x, y = startx, starty
i = 2
else:
startx = x + data[0]
starty = y + data[1]
for i in range(i, len(data), 2):
x += data[i]
y += data[i+1]
elif cmd in ['l','t']:
x += sum(data[0::2])
y += sum(data[1::2])
elif cmd in ['S','Q']:
for i in range(i, len(data), 4):
data[i] -= x
data[i+1] -= y
data[i+2] -= x
data[i+3] -= y
x += data[i+2]
y += data[i+3]
path[pathIndex] = (cmd.lower(), data)
elif cmd in ['s','q']:
x += sum(data[2::4])
y += sum(data[3::4])
elif cmd == 'C':
for i in range(i, len(data), 6):
data[i] -= x
data[i+1] -= y
data[i+2] -= x
data[i+3] -= y
data[i+4] -= x
data[i+5] -= y
x += data[i+4]
y += data[i+5]
path[pathIndex] = ('c', data)
elif cmd == 'c':
x += sum(data[4::6])
y += sum(data[5::6])
elif cmd in ['z','Z']:
x, y = startx, starty
path[pathIndex] = ('z', data)
# remove empty segments
# Reuse the data structure 'path' and the coordinate lists, even if we're
# deleting items, because these deletions are relatively cheap.
if not withRoundLineCaps:
for pathIndex in range(0, len(path)):
cmd, data = path[pathIndex]
i = 0
if cmd in ['m','l','t']:
if cmd == 'm':
# remove m0,0 segments
if pathIndex > 0 and data[0] == data[i+1] == 0:
# 'm0,0 x,y' can be replaces with 'lx,y',
# except the first m which is a required absolute moveto
path[pathIndex] = ('l', data[2:])
numPathSegmentsReduced += 1
else: # else skip move coordinate
i = 2
while i < len(data):
if data[i] == data[i+1] == 0:
del data[i:i+2]
numPathSegmentsReduced += 1
else:
i += 2
elif cmd == 'c':
while i < len(data):
if data[i] == data[i+1] == data[i+2] == data[i+3] == data[i+4] == data[i+5] == 0:
del data[i:i+6]
numPathSegmentsReduced += 1
else:
i += 6
elif cmd == 'a':
while i < len(data):
if data[i+5] == data[i+6] == 0:
del data[i:i+7]
numPathSegmentsReduced += 1
else:
i += 7
elif cmd == 'q':
while i < len(data):
if data[i] == data[i+1] == data[i+2] == data[i+3] == 0:
del data[i:i+4]
numPathSegmentsReduced += 1
else:
i += 4
elif cmd in ['h','v']:
oldLen = len(data)
path[pathIndex] = (cmd, [coord for coord in data if coord != 0])
numPathSegmentsReduced += len(path[pathIndex][1]) - oldLen
# fixup: Delete subcommands having no coordinates.
path = [elem for elem in path if len(elem[1]) > 0 or elem[0] == 'z']
# convert straight curves into lines
newPath = [path[0]]
for (cmd,data) in path[1:]:
i = 0
newData = data
if cmd == 'c':
newData = []
while i < len(data):
# since all commands are now relative, we can think of previous point as (0,0)
# and new point (dx,dy) is (data[i+4],data[i+5])
# eqn of line will be y = (dy/dx)*x or if dx=0 then eqn of line is x=0
(p1x,p1y) = (data[i],data[i+1])
(p2x,p2y) = (data[i+2],data[i+3])
dx = data[i+4]
dy = data[i+5]
foundStraightCurve = False
if dx == 0:
if p1x == 0 and p2x == 0:
foundStraightCurve = True
else:
m = dy/dx
if p1y == m*p1x and p2y == m*p2x:
foundStraightCurve = True
if foundStraightCurve:
# flush any existing curve coords first
if newData:
newPath.append( (cmd,newData) )
newData = []
# now create a straight line segment
newPath.append( ('l', [dx,dy]) )
numCurvesStraightened += 1
else:
newData.extend(data[i:i+6])
i += 6
if newData or cmd == 'z' or cmd == 'Z':
newPath.append( (cmd,newData) )
path = newPath
# collapse all consecutive commands of the same type into one command
prevCmd = ''
prevData = []
newPath = []
for (cmd,data) in path:
# flush the previous command if it is not the same type as the current command
if prevCmd != '':
if cmd != prevCmd or cmd == 'm':
newPath.append( (prevCmd, prevData) )
prevCmd = ''
prevData = []
# if the previous and current commands are the same type,
# or the previous command is moveto and the current is lineto, collapse,
# but only if they are not move commands (since move can contain implicit lineto commands)
if (cmd == prevCmd or (cmd == 'l' and prevCmd == 'm')) and cmd != 'm':
prevData.extend(data)
# save last command and data
else:
prevCmd = cmd
prevData = data
# flush last command and data
if prevCmd != '':
newPath.append( (prevCmd, prevData) )
path = newPath
# convert to shorthand path segments where possible
newPath = []
for (cmd,data) in path:
# convert line segments into h,v where possible
if cmd == 'l':
i = 0
lineTuples = []
while i < len(data):
if data[i] == 0:
# vertical
if lineTuples:
# flush the existing line command
newPath.append( ('l', lineTuples) )
lineTuples = []
# append the v and then the remaining line coords
newPath.append( ('v', [data[i+1]]) )
numPathSegmentsReduced += 1
elif data[i+1] == 0:
if lineTuples:
# flush the line command, then append the h and then the remaining line coords
newPath.append( ('l', lineTuples) )
lineTuples = []
newPath.append( ('h', [data[i]]) )
numPathSegmentsReduced += 1
else:
lineTuples.extend(data[i:i+2])
i += 2
if lineTuples:
newPath.append( ('l', lineTuples) )
# also handle implied relative linetos
elif cmd == 'm':
i = 2
lineTuples = [data[0], data[1]]
while i < len(data):
if data[i] == 0:
# vertical
if lineTuples:
# flush the existing m/l command
newPath.append( (cmd, lineTuples) )
lineTuples = []
cmd = 'l' # dealing with linetos now
# append the v and then the remaining line coords
newPath.append( ('v', [data[i+1]]) )
numPathSegmentsReduced += 1
elif data[i+1] == 0:
if lineTuples:
# flush the m/l command, then append the h and then the remaining line coords
newPath.append( (cmd, lineTuples) )
lineTuples = []
cmd = 'l' # dealing with linetos now
newPath.append( ('h', [data[i]]) )
numPathSegmentsReduced += 1
else:
lineTuples.extend(data[i:i+2])
i += 2
if lineTuples:
newPath.append( (cmd, lineTuples) )
# convert Bézier curve segments into s where possible
elif cmd == 'c':
bez_ctl_pt = (0,0)
i = 0
curveTuples = []
while i < len(data):
# rotate by 180deg means negate both coordinates
# if the previous control point is equal then we can substitute a
# shorthand bezier command
if bez_ctl_pt[0] == data[i] and bez_ctl_pt[1] == data[i+1]:
if curveTuples:
newPath.append( ('c', curveTuples) )
curveTuples = []
# append the s command
newPath.append( ('s', [data[i+2], data[i+3], data[i+4], data[i+5]]) )
numPathSegmentsReduced += 1
else:
j = 0
while j <= 5:
curveTuples.append(data[i+j])
j += 1
# set up control point for next curve segment
bez_ctl_pt = (data[i+4]-data[i+2], data[i+5]-data[i+3])
i += 6
if curveTuples:
newPath.append( ('c', curveTuples) )
# convert quadratic curve segments into t where possible
elif cmd == 'q':
quad_ctl_pt = (0,0)
i = 0
curveTuples = []
while i < len(data):
if quad_ctl_pt[0] == data[i] and quad_ctl_pt[1] == data[i+1]:
if curveTuples:
newPath.append( ('q', curveTuples) )
curveTuples = []
# append the t command
newPath.append( ('t', [data[i+2], data[i+3]]) )
numPathSegmentsReduced += 1
else:
j = 0;
while j <= 3:
curveTuples.append(data[i+j])
j += 1
quad_ctl_pt = (data[i+2]-data[i], data[i+3]-data[i+1])
i += 4
if curveTuples:
newPath.append( ('q', curveTuples) )
else:
newPath.append( (cmd, data) )
path = newPath
# for each h or v, collapse unnecessary coordinates that run in the same direction
# i.e. "h-100-100" becomes "h-200" but "h300-100" does not change
# Reuse the data structure 'path', since we're not adding or removing subcommands.
# Also reuse the coordinate lists, even if we're deleting items, because these
# deletions are relatively cheap.
for pathIndex in range(1, len(path)):
cmd, data = path[pathIndex]
if cmd in ['h','v'] and len(data) > 1:
coordIndex = 1
while coordIndex < len(data):
if isSameSign(data[coordIndex - 1], data[coordIndex]):
data[coordIndex - 1] += data[coordIndex]
del data[coordIndex]
numPathSegmentsReduced += 1
else:
coordIndex += 1
# it is possible that we have consecutive h, v, c, t commands now
# so again collapse all consecutive commands of the same type into one command
prevCmd = ''
prevData = []
newPath = [path[0]]
for (cmd,data) in path[1:]:
# flush the previous command if it is not the same type as the current command
if prevCmd != '':
if cmd != prevCmd or cmd == 'm':
newPath.append( (prevCmd, prevData) )
prevCmd = ''
prevData = []
# if the previous and current commands are the same type, collapse
if cmd == prevCmd and cmd != 'm':
prevData.extend(data)
# save last command and data
else:
prevCmd = cmd
prevData = data
# flush last command and data
if prevCmd != '':
newPath.append( (prevCmd, prevData) )
path = newPath
newPathStr = serializePath(path, options)
numBytesSavedInPathData += ( len(oldPathStr) - len(newPathStr) )
element.setAttribute('d', newPathStr)
def parseListOfPoints(s):
"""
Parse string into a list of points.
Returns a list containing an even number of coordinate strings
"""
i = 0
# (wsp)? comma-or-wsp-separated coordinate pairs (wsp)?
# coordinate-pair = coordinate comma-or-wsp coordinate
# coordinate = sign? integer
# comma-wsp: (wsp+ comma? wsp*) | (comma wsp*)
ws_nums = re.split(r"\s*[\s,]\s*", s.strip())
nums = []
# also, if 100-100 is found, split it into two also
# <polygon points="100,-100,100-100,100-100-100,-100-100" />
for i in range(len(ws_nums)):
negcoords = ws_nums[i].split("-")
# this string didn't have any negative coordinates
if len(negcoords) == 1:
nums.append(negcoords[0])
# we got negative coords
else:
for j in range(len(negcoords)):
# first number could be positive
if j == 0:
if negcoords[0] != '':
nums.append(negcoords[0])
# otherwise all other strings will be negative
else:
# unless we accidentally split a number that was in scientific notation
# and had a negative exponent (500.00e-1)
prev = "";
if len(nums):
prev = nums[len(nums)-1]
if prev and prev[len(prev)-1] in ['e', 'E']:
nums[len(nums)-1] = prev + '-' + negcoords[j]
else:
nums.append( '-'+negcoords[j] )
# if we have an odd number of points, return empty
if len(nums) % 2 != 0: return []
# now resolve into Decimal values
i = 0
while i < len(nums):
try:
nums[i] = getcontext().create_decimal(nums[i])
nums[i + 1] = getcontext().create_decimal(nums[i + 1])
except InvalidOperation: # one of the lengths had a unit or is an invalid number
return []
i += 2
return nums
def cleanPolygon(elem, options):
"""
Remove unnecessary closing point of polygon points attribute
"""
global numPointsRemovedFromPolygon
pts = parseListOfPoints(elem.getAttribute('points'))
N = len(pts)/2
if N >= 2:
(startx,starty) = pts[:2]
(endx,endy) = pts[-2:]
if startx == endx and starty == endy:
del pts[-2:]
numPointsRemovedFromPolygon += 1
elem.setAttribute('points', scourCoordinates(pts, options, True))
def cleanPolyline(elem, options):
"""
Scour the polyline points attribute
"""
pts = parseListOfPoints(elem.getAttribute('points'))
elem.setAttribute('points', scourCoordinates(pts, options, True))
def serializePath(pathObj, options):
"""
Reserializes the path data with some cleanups.
"""
# elliptical arc commands must have comma/wsp separating the coordinates
# this fixes an issue outlined in Fix https://bugs.launchpad.net/scour/+bug/412754
return ''.join([cmd + scourCoordinates(data, options, (cmd == 'a')) for cmd, data in pathObj])
def serializeTransform(transformObj):
"""
Reserializes the transform data with some cleanups.
"""
return ' '.join(
[command + '(' + ' '.join(
[scourUnitlessLength(number) for number in numbers]
) + ')'
for command, numbers in transformObj]
)
def scourCoordinates(data, options, forceCommaWsp = False):
"""
Serializes coordinate data with some cleanups:
- removes all trailing zeros after the decimal
- integerize coordinates if possible
- removes extraneous whitespace
- adds spaces between values in a subcommand if required (or if forceCommaWsp is True)
"""
if data != None:
newData = []
c = 0
previousCoord = ''
for coord in data:
scouredCoord = scourUnitlessLength(coord, needsRendererWorkaround=options.renderer_workaround)
# only need the comma if the current number starts with a digit
# (numbers can start with - without needing a comma before)
# or if forceCommaWsp is True
# or if this number starts with a dot and the previous number
# had *no* dot or exponent (so we can go like -5.5.5 for -5.5,0.5
# and 4e4.5 for 40000,0.5)
if c > 0 and (forceCommaWsp
or scouredCoord[0].isdigit()
or (scouredCoord[0] == '.' and not ('.' in previousCoord or 'e' in previousCoord))
):
newData.append( ' ' )
# add the scoured coordinate to the path string
newData.append( scouredCoord )
previousCoord = scouredCoord
c += 1
# What we need to do to work around GNOME bugs 548494, 563933 and
# 620565, which are being fixed and unfixed in Ubuntu, is
# to make sure that a dot doesn't immediately follow a command
# (so 'h50' and 'h0.5' are allowed, but not 'h.5').
# Then, we need to add a space character after any coordinates
# having an 'e' (scientific notation), so as to have the exponent
# separate from the next number.
if options.renderer_workaround:
if len(newData) > 0:
for i in range(1, len(newData)):
if newData[i][0] == '-' and 'e' in newData[i - 1]:
newData[i - 1] += ' '
return ''.join(newData)
else:
return ''.join(newData)
return ''
def scourLength(length):
"""
Scours a length. Accepts units.
"""
length = SVGLength(length)
return scourUnitlessLength(length.value) + Unit.str(length.units)
def scourUnitlessLength(length, needsRendererWorkaround=False): # length is of a numeric type
"""
Scours the numeric part of a length only. Does not accept units.
This is faster than scourLength on elements guaranteed not to
contain units.
"""
# reduce to the proper number of digits
if not isinstance(length, Decimal):
length = getcontext().create_decimal(str(length))
# if the value is an integer, it may still have .0[...] attached to it for some reason
# remove those
if int(length) == length:
length = getcontext().create_decimal(int(length))
# gather the non-scientific notation version of the coordinate.
# this may actually be in scientific notation if the value is
# sufficiently large or small, so this is a misnomer.
nonsci = six.text_type(length).lower().replace("e+", "e")
if not needsRendererWorkaround:
if len(nonsci) > 2 and nonsci[:2] == '0.':
nonsci = nonsci[1:] # remove the 0, leave the dot
elif len(nonsci) > 3 and nonsci[:3] == '-0.':
nonsci = '-' + nonsci[2:] # remove the 0, leave the minus and dot
if len(nonsci) > 3: # avoid calling normalize unless strictly necessary
# and then the scientific notation version, with E+NUMBER replaced with
# just eNUMBER, since SVG accepts this.
sci = six.text_type(length.normalize()).lower().replace("e+", "e")
if len(sci) < len(nonsci): return sci
else: return nonsci
else: return nonsci
def reducePrecision(element) :
"""
Because opacities, letter spacings, stroke widths and all that don't need
to be preserved in SVG files with 9 digits of precision.
Takes all of these attributes, in the given element node and its children,
and reduces their precision to the current Decimal context's precision.
Also checks for the attributes actually being lengths, not 'inherit', 'none'
or anything that isn't an SVGLength.
Returns the number of bytes saved after performing these reductions.
"""
num = 0
styles = _getStyle(element)
for lengthAttr in ['opacity', 'flood-opacity', 'fill-opacity',
'stroke-opacity', 'stop-opacity', 'stroke-miterlimit',
'stroke-dashoffset', 'letter-spacing', 'word-spacing',
'kerning', 'font-size-adjust', 'font-size',
'stroke-width']:
val = element.getAttribute(lengthAttr)
if val != '':
valLen = SVGLength(val)
if valLen.units != Unit.INVALID: # not an absolute/relative size or inherit, can be % though
newVal = scourLength(val)
if len(newVal) < len(val):
num += len(val) - len(newVal)
element.setAttribute(lengthAttr, newVal)
# repeat for attributes hidden in styles
if lengthAttr in list(styles.keys()):
val = styles[lengthAttr]
valLen = SVGLength(val)
if valLen.units != Unit.INVALID:
newVal = scourLength(val)
if len(newVal) < len(val):
num += len(val) - len(newVal)
styles[lengthAttr] = newVal
_setStyle(element, styles)
for child in element.childNodes:
if child.nodeType == 1:
num += reducePrecision(child)
return num
def optimizeAngle(angle):
"""
Because any rotation can be expressed within 360 degrees
of any given number, and since negative angles sometimes
are one character longer than corresponding positive angle,
we shorten the number to one in the range to [-90, 270[.
"""
# First, we put the new angle in the range ]-360, 360[.
# The modulo operator yields results with the sign of the
# divisor, so for negative dividends, we preserve the sign
# of the angle.
if angle < 0: angle %= -360
else: angle %= 360
# 720 degrees is unneccessary, as 360 covers all angles.
# As "-x" is shorter than "35x" and "-xxx" one character
# longer than positive angles <= 260, we constrain angle
# range to [-90, 270[ (or, equally valid: ]-100, 260]).
if angle >= 270: angle -= 360
elif angle < -90: angle += 360
return angle
def optimizeTransform(transform):
"""
Optimises a series of transformations parsed from a single
transform="" attribute.
The transformation list is modified in-place.
"""
# FIXME: reordering these would optimize even more cases:
# first: Fold consecutive runs of the same transformation
# extra: Attempt to cast between types to create sameness:
# "matrix(0 1 -1 0 0 0) rotate(180) scale(-1)" all
# are rotations (90, 180, 180) -- thus "rotate(90)"
# second: Simplify transforms where numbers are optional.
# third: Attempt to simplify any single remaining matrix()
#
# if there's only one transformation and it's a matrix,
# try to make it a shorter non-matrix transformation
# NOTE: as matrix(a b c d e f) in SVG means the matrix:
# |¯ a c e ¯| make constants |¯ A1 A2 A3 ¯|
# | b d f | translating them | B1 B2 B3 |
# |_ 0 0 1 _| to more readable |_ 0 0 1 _|
if len(transform) == 1 and transform[0][0] == 'matrix':
matrix = A1, B1, A2, B2, A3, B3 = transform[0][1]
# |¯ 1 0 0 ¯|
# | 0 1 0 | Identity matrix (no transformation)
# |_ 0 0 1 _|
if matrix == [1, 0, 0, 1, 0, 0]:
del transform[0]
# |¯ 1 0 X ¯|
# | 0 1 Y | Translation by (X, Y).
# |_ 0 0 1 _|
elif (A1 == 1 and A2 == 0
and B1 == 0 and B2 == 1):
transform[0] = ('translate', [A3, B3])
# |¯ X 0 0 ¯|
# | 0 Y 0 | Scaling by (X, Y).
# |_ 0 0 1 _|
elif ( A2 == 0 and A3 == 0
and B1 == 0 and B3 == 0):
transform[0] = ('scale', [A1, B2])
# |¯ cos(A) -sin(A) 0 ¯| Rotation by angle A,
# | sin(A) cos(A) 0 | clockwise, about the origin.
# |_ 0 0 1 _| A is in degrees, [-180...180].
elif (A1 == B2 and -1 <= A1 <= 1 and A3 == 0
and -B1 == A2 and -1 <= B1 <= 1 and B3 == 0
# as cos² A + sin² A == 1 and as decimal trig is approximate:
# FIXME: the "epsilon" term here should really be some function
# of the precision of the (sin|cos)_A terms, not 1e-15:
and abs((B1 ** 2) + (A1 ** 2) - 1) < Decimal("1e-15")):
sin_A, cos_A = B1, A1
# while asin(A) and acos(A) both only have an 180° range
# the sign of sin(A) and cos(A) varies across quadrants,
# letting us hone in on the angle the matrix represents:
# -- => < -90 | -+ => -90..0 | ++ => 0..90 | +- => >= 90
#
# http://en.wikipedia.org/wiki/File:Sine_cosine_plot.svg
# shows asin has the correct angle the middle quadrants:
A = Decimal(str(math.degrees(math.asin(float(sin_A)))))
if cos_A < 0: # otherwise needs adjusting from the edges
if sin_A < 0:
A = -180 - A
else:
A = 180 - A
transform[0] = ('rotate', [A])
# Simplify transformations where numbers are optional.
for type, args in transform:
if type == 'translate':
# Only the X coordinate is required for translations.
# If the Y coordinate is unspecified, it's 0.
if len(args) == 2 and args[1] == 0:
del args[1]
elif type == 'rotate':
args[0] = optimizeAngle(args[0]) # angle
# Only the angle is required for rotations.
# If the coordinates are unspecified, it's the origin (0, 0).
if len(args) == 3 and args[1] == args[2] == 0:
del args[1:]
elif type == 'scale':
# Only the X scaling factor is required.
# If the Y factor is unspecified, it's the same as X.
if len(args) == 2 and args[0] == args[1]:
del args[1]
# Attempt to coalesce runs of the same transformation.
# Translations followed immediately by other translations,
# rotations followed immediately by other rotations,
# scaling followed immediately by other scaling,
# are safe to add.
# Identity skewX/skewY are safe to remove, but how do they accrete?
# |¯ 1 0 0 ¯|
# | tan(A) 1 0 | skews X coordinates by angle A
# |_ 0 0 1 _|
#
# |¯ 1 tan(A) 0 ¯|
# | 0 1 0 | skews Y coordinates by angle A
# |_ 0 0 1 _|
#
# FIXME: A matrix followed immediately by another matrix
# would be safe to multiply together, too.
i = 1
while i < len(transform):
currType, currArgs = transform[i]
prevType, prevArgs = transform[i - 1]
if currType == prevType == 'translate':
prevArgs[0] += currArgs[0] # x
# for y, only add if the second translation has an explicit y
if len(currArgs) == 2:
if len(prevArgs) == 2:
prevArgs[1] += currArgs[1] # y
elif len(prevArgs) == 1:
prevArgs.append(currArgs[1]) # y
del transform[i]
if prevArgs[0] == prevArgs[1] == 0:
# Identity translation!
i -= 1
del transform[i]
elif (currType == prevType == 'rotate'
and len(prevArgs) == len(currArgs) == 1):
# Only coalesce if both rotations are from the origin.
prevArgs[0] = optimizeAngle(prevArgs[0] + currArgs[0])
del transform[i]
elif currType == prevType == 'scale':
prevArgs[0] *= currArgs[0] # x
# handle an implicit y
if len(prevArgs) == 2 and len(currArgs) == 2:
# y1 * y2
prevArgs[1] *= currArgs[1]
elif len(prevArgs) == 1 and len(currArgs) == 2:
# create y2 = uniformscalefactor1 * y2
prevArgs.append(prevArgs[0] * currArgs[1])
elif len(prevArgs) == 2 and len(currArgs) == 1:
# y1 * uniformscalefactor2
prevArgs[1] *= currArgs[0]
del transform[i]
if prevArgs[0] == prevArgs[1] == 1:
# Identity scale!
i -= 1
del transform[i]
else:
i += 1
# Some fixups are needed for single-element transformation lists, since
# the loop above was to coalesce elements with their predecessors in the
# list, and thus it required 2 elements.
i = 0
while i < len(transform):
currType, currArgs = transform[i]
if ((currType == 'skewX' or currType == 'skewY')
and len(currArgs) == 1 and currArgs[0] == 0):
# Identity skew!
del transform[i]
elif ((currType == 'rotate')
and len(currArgs) == 1 and currArgs[0] == 0):
# Identity rotation!
del transform[i]
else:
i += 1
def optimizeTransforms(element, options) :
"""
Attempts to optimise transform specifications on the given node and its children.
Returns the number of bytes saved after performing these reductions.
"""
num = 0
for transformAttr in ['transform', 'patternTransform', 'gradientTransform']:
val = element.getAttribute(transformAttr)
if val != '':
transform = svg_transform_parser.parse(val)
optimizeTransform(transform)
newVal = serializeTransform(transform)
if len(newVal) < len(val):
if len(newVal):
element.setAttribute(transformAttr, newVal)
else:
element.removeAttribute(transformAttr)
num += len(val) - len(newVal)
for child in element.childNodes:
if child.nodeType == 1:
num += optimizeTransforms(child, options)
return num
def removeComments(element) :
"""
Removes comments from the element and its children.
"""
global numCommentBytes
if isinstance(element, xml.dom.minidom.Comment):
numCommentBytes += len(element.data)
element.parentNode.removeChild(element)
else:
for subelement in element.childNodes[:]:
removeComments(subelement)
def embedRasters(element, options) :
import base64
import urllib
"""
Converts raster references to inline images.
NOTE: there are size limits to base64-encoding handling in browsers
"""
global numRastersEmbedded
href = element.getAttributeNS(NS['XLINK'],'href')
# if xlink:href is set, then grab the id
if href != '' and len(href) > 1:
# find if href value has filename ext
ext = os.path.splitext(os.path.basename(href))[1].lower()[1:]
# look for 'png', 'jpg', and 'gif' extensions
if ext == 'png' or ext == 'jpg' or ext == 'gif':
# file:// URLs denote files on the local system too
if href[:7] == 'file://':
href = href[7:]
# does the file exist?
if os.path.isfile(href):
# if this is not an absolute path, set path relative
# to script file based on input arg
infilename = '.'
if options.infilename: infilename = options.infilename
href = os.path.join(os.path.dirname(infilename), href)
rasterdata = ''
# test if file exists locally
if os.path.isfile(href):
# open raster file as raw binary
raster = open( href, "rb")
rasterdata = raster.read()
elif href[:7] == 'http://':
webFile = urllib.urlopen( href )
rasterdata = webFile.read()
webFile.close()
# ... should we remove all images which don't resolve?
if rasterdata != '' :
# base64-encode raster
b64eRaster = base64.b64encode( rasterdata )
# set href attribute to base64-encoded equivalent
if b64eRaster != '':
# PNG and GIF both have MIME Type 'image/[ext]', but
# JPEG has MIME Type 'image/jpeg'
if ext == 'jpg':
ext = 'jpeg'
element.setAttributeNS(NS['XLINK'], 'href', 'data:image/' + ext + ';base64,' + b64eRaster)
numRastersEmbedded += 1
del b64eRaster
def properlySizeDoc(docElement, options):
# get doc width and height
w = SVGLength(docElement.getAttribute('width'))
h = SVGLength(docElement.getAttribute('height'))
# if width/height are not unitless or px then it is not ok to rewrite them into a viewBox.
# well, it may be OK for Web browsers and vector editors, but not for librsvg.
if options.renderer_workaround:
if ((w.units != Unit.NONE and w.units != Unit.PX) or
(h.units != Unit.NONE and h.units != Unit.PX)):
return
# else we have a statically sized image and we should try to remedy that
# parse viewBox attribute
vbSep = re.split("\\s*\\,?\\s*", docElement.getAttribute('viewBox'), 3)
# if we have a valid viewBox we need to check it
vbWidth,vbHeight = 0,0
if len(vbSep) == 4:
try:
# if x or y are specified and non-zero then it is not ok to overwrite it
vbX = float(vbSep[0])
vbY = float(vbSep[1])
if vbX != 0 or vbY != 0:
return
# if width or height are not equal to doc width/height then it is not ok to overwrite it
vbWidth = float(vbSep[2])
vbHeight = float(vbSep[3])
if vbWidth != w.value or vbHeight != h.value:
return
# if the viewBox did not parse properly it is invalid and ok to overwrite it
except ValueError:
pass
# at this point it's safe to set the viewBox and remove width/height
docElement.setAttribute('viewBox', '0 0 %s %s' % (w.value, h.value))
docElement.removeAttribute('width')
docElement.removeAttribute('height')
def remapNamespacePrefix(node, oldprefix, newprefix):
if node == None or node.nodeType != 1: return
if node.prefix == oldprefix:
localName = node.localName
namespace = node.namespaceURI
doc = node.ownerDocument
parent = node.parentNode
# create a replacement node
newNode = None
if newprefix != '':
newNode = doc.createElementNS(namespace, newprefix+":"+localName)
else:
newNode = doc.createElement(localName);
# add all the attributes
attrList = node.attributes
for i in range(attrList.length):
attr = attrList.item(i)
newNode.setAttributeNS( attr.namespaceURI, attr.localName, attr.nodeValue)
# clone and add all the child nodes
for child in node.childNodes:
newNode.appendChild(child.cloneNode(True))
# replace old node with new node
parent.replaceChild( newNode, node )
# set the node to the new node in the remapped namespace prefix
node = newNode
# now do all child nodes
for child in node.childNodes :
remapNamespacePrefix(child, oldprefix, newprefix)
def makeWellFormed(str):
xml_ents = { '<':'<', '>':'>', '&':'&', "'":''', '"':'"'}
# starr = []
# for c in str:
# if c in xml_ents:
# starr.append(xml_ents[c])
# else:
# starr.append(c)
# this list comprehension is short-form for the above for-loop:
return ''.join([xml_ents[c] if c in xml_ents else c for c in str])
# hand-rolled serialization function that has the following benefits:
# - pretty printing
# - somewhat judicious use of whitespace
# - ensure id attributes are first
def serializeXML(element, options, ind = 0, preserveWhitespace = False):
outParts = []
indent = ind
I=''
newline = ''
if options.newlines:
if options.indent_type == 'tab': I='\t'
elif options.indent_type == 'space': I=' '
I *= options.indent_depth
newline = '\n'
outParts.extend([(I * ind), '<', element.nodeName])
# always serialize the id or xml:id attributes first
if element.getAttribute('id') != '':
id = element.getAttribute('id')
quot = '"'
if id.find('"') != -1:
quot = "'"
outParts.extend([' id=', quot, id, quot])
if element.getAttribute('xml:id') != '':
id = element.getAttribute('xml:id')
quot = '"'
if id.find('"') != -1:
quot = "'"
outParts.extend([' xml:id=', quot, id, quot])
# now serialize the other attributes
attrList = element.attributes
for num in range(attrList.length) :
attr = attrList.item(num)
if attr.nodeName == 'id' or attr.nodeName == 'xml:id': continue
# if the attribute value contains a double-quote, use single-quotes
quot = '"'
if attr.nodeValue.find('"') != -1:
quot = "'"
attrValue = makeWellFormed( attr.nodeValue )
outParts.append(' ')
# preserve xmlns: if it is a namespace prefix declaration
if attr.prefix != None:
outParts.extend([attr.prefix, ':'])
elif attr.namespaceURI != None:
if attr.namespaceURI == 'http://www.w3.org/2000/xmlns/' and attr.nodeName.find('xmlns') == -1:
outParts.append('xmlns:')
elif attr.namespaceURI == 'http://www.w3.org/1999/xlink':
outParts.append('xlink:')
outParts.extend([attr.localName, '=', quot, attrValue, quot])
if attr.nodeName == 'xml:space':
if attrValue == 'preserve':
preserveWhitespace = True
elif attrValue == 'default':
preserveWhitespace = False
# if no children, self-close
children = element.childNodes
if children.length > 0:
outParts.append('>')
onNewLine = False
for child in element.childNodes:
# element node
if child.nodeType == 1:
if preserveWhitespace:
outParts.append(serializeXML(child, options, 0, preserveWhitespace))
else:
outParts.extend([newline, serializeXML(child, options, indent + 1, preserveWhitespace)])
onNewLine = True
# text node
elif child.nodeType == 3:
# trim it only in the case of not being a child of an element
# where whitespace might be important
if preserveWhitespace:
outParts.append(makeWellFormed(child.nodeValue))
else:
outParts.append(makeWellFormed(child.nodeValue.strip()))
# CDATA node
elif child.nodeType == 4:
outParts.extend(['<![CDATA[', child.nodeValue, ']]>'])
# Comment node
elif child.nodeType == 8:
outParts.extend(['<!--', child.nodeValue, '-->'])
# TODO: entities, processing instructions, what else?
else: # ignore the rest
pass
if onNewLine: outParts.append(I * ind)
outParts.extend(['</', element.nodeName, '>'])
if indent > 0: outParts.append(newline)
else:
outParts.append('/>')
if indent > 0: outParts.append(newline)
return "".join(outParts)
# this is the main method
# input is a string representation of the input XML
# returns a string representation of the output XML
def scourString(in_string, options=None):
if options is None:
options = _options_parser.get_default_values()
getcontext().prec = options.digits
global numAttrsRemoved
global numStylePropsFixed
global numElemsRemoved
global numBytesSavedInColors
global numCommentsRemoved
global numBytesSavedInIDs
global numBytesSavedInLengths
global numBytesSavedInTransforms
doc = xml.dom.minidom.parseString(in_string)
# remove <metadata> if the user wants to
if options.remove_metadata:
removeMetadataElements(doc)
# for whatever reason this does not always remove all inkscape/sodipodi attributes/elements
# on the first pass, so we do it multiple times
# does it have to do with removal of children affecting the childlist?
if options.keep_editor_data == False:
while removeNamespacedElements( doc.documentElement, unwanted_ns ) > 0 :
pass
while removeNamespacedAttributes( doc.documentElement, unwanted_ns ) > 0 :
pass
# remove the xmlns: declarations now
xmlnsDeclsToRemove = []
attrList = doc.documentElement.attributes
for num in range(attrList.length) :
if attrList.item(num).nodeValue in unwanted_ns :
xmlnsDeclsToRemove.append(attrList.item(num).nodeName)
for attr in xmlnsDeclsToRemove :
doc.documentElement.removeAttribute(attr)
numAttrsRemoved += 1
# ensure namespace for SVG is declared
# TODO: what if the default namespace is something else (i.e. some valid namespace)?
if doc.documentElement.getAttribute('xmlns') != 'http://www.w3.org/2000/svg':
doc.documentElement.setAttribute('xmlns', 'http://www.w3.org/2000/svg')
# TODO: throw error or warning?
# check for redundant and unused SVG namespace declarations
def xmlnsUnused(prefix, namespace):
if doc.getElementsByTagNameNS(namespace, "*"):
return False
else:
for element in doc.getElementsByTagName("*"):
for attribute in element.attributes.values():
if attribute.name.startswith(prefix):
return False
return True
attrList = doc.documentElement.attributes
xmlnsDeclsToRemove = []
redundantPrefixes = []
for i in range(attrList.length):
attr = attrList.item(i)
name = attr.nodeName
val = attr.nodeValue
if name[0:6] == 'xmlns:':
if val == 'http://www.w3.org/2000/svg':
redundantPrefixes.append(name[6:])
xmlnsDeclsToRemove.append(name)
elif xmlnsUnused(name[6:], val):
xmlnsDeclsToRemove.append(name)
for attrName in xmlnsDeclsToRemove:
doc.documentElement.removeAttribute(attrName)
numAttrsRemoved += 1
for prefix in redundantPrefixes:
remapNamespacePrefix(doc.documentElement, prefix, '')
if options.strip_comments:
numCommentsRemoved = removeComments(doc)
if options.strip_xml_space_attribute and doc.documentElement.hasAttribute('xml:space'):
doc.documentElement.removeAttribute('xml:space')
numAttrsRemoved += 1
# repair style (remove unnecessary style properties and change them into XML attributes)
numStylePropsFixed = repairStyle(doc.documentElement, options)
# convert colors to #RRGGBB format
if options.simple_colors:
numBytesSavedInColors = convertColors(doc.documentElement)
# remove unreferenced gradients/patterns outside of defs
# and most unreferenced elements inside of defs
while removeUnreferencedElements(doc, options.keep_defs) > 0:
pass
# remove empty defs, metadata, g
# NOTE: these elements will be removed if they just have whitespace-only text nodes
for tag in ['defs', 'metadata', 'g'] :
for elem in doc.documentElement.getElementsByTagName(tag) :
removeElem = not elem.hasChildNodes()
if removeElem == False :
for child in elem.childNodes :
if child.nodeType in [1, 4, 8]:
break
elif child.nodeType == 3 and not child.nodeValue.isspace():
break
else:
removeElem = True
if removeElem :
elem.parentNode.removeChild(elem)
numElemsRemoved += 1
if options.strip_ids:
bContinueLooping = True
while bContinueLooping:
identifiedElements = unprotected_ids(doc, options)
referencedIDs = findReferencedElements(doc.documentElement)
bContinueLooping = (removeUnreferencedIDs(referencedIDs, identifiedElements) > 0)
while removeDuplicateGradientStops(doc) > 0:
pass
# remove gradients that are only referenced by one other gradient
while collapseSinglyReferencedGradients(doc) > 0:
pass
# remove duplicate gradients
while removeDuplicateGradients(doc) > 0:
pass
# create <g> elements if there are runs of elements with the same attributes.
# this MUST be before moveCommonAttributesToParentGroup.
if options.group_create:
createGroupsForCommonAttributes(doc.documentElement)
# move common attributes to parent group
# NOTE: the if the <svg> element's immediate children
# all have the same value for an attribute, it must not
# get moved to the <svg> element. The <svg> element
# doesn't accept fill=, stroke= etc.!
referencedIds = findReferencedElements(doc.documentElement)
for child in doc.documentElement.childNodes:
numAttrsRemoved += moveCommonAttributesToParentGroup(child, referencedIds)
# remove unused attributes from parent
numAttrsRemoved += removeUnusedAttributesOnParent(doc.documentElement)
# Collapse groups LAST, because we've created groups. If done before
# moveAttributesToParentGroup, empty <g>'s may remain.
if options.group_collapse:
while removeNestedGroups(doc.documentElement) > 0:
pass
# remove unnecessary closing point of polygons and scour points
for polygon in doc.documentElement.getElementsByTagName('polygon') :
cleanPolygon(polygon, options)
# scour points of polyline
for polyline in doc.documentElement.getElementsByTagName('polyline') :
cleanPolyline(polyline, options)
# clean path data
for elem in doc.documentElement.getElementsByTagName('path') :
if elem.getAttribute('d') == '':
elem.parentNode.removeChild(elem)
else:
cleanPath(elem, options)
# shorten ID names as much as possible
if options.shorten_ids:
numBytesSavedInIDs += shortenIDs(doc, options.shorten_ids_prefix, unprotected_ids(doc, options))
# scour lengths (including coordinates)
for type in ['svg', 'image', 'rect', 'circle', 'ellipse', 'line', 'linearGradient', 'radialGradient', 'stop', 'filter']:
for elem in doc.getElementsByTagName(type):
for attr in ['x', 'y', 'width', 'height', 'cx', 'cy', 'r', 'rx', 'ry',
'x1', 'y1', 'x2', 'y2', 'fx', 'fy', 'offset']:
if elem.getAttribute(attr) != '':
elem.setAttribute(attr, scourLength(elem.getAttribute(attr)))
# more length scouring in this function
numBytesSavedInLengths = reducePrecision(doc.documentElement)
# remove default values of attributes
numAttrsRemoved += removeDefaultAttributeValues(doc.documentElement, options)
# reduce the length of transformation attributes
numBytesSavedInTransforms = optimizeTransforms(doc.documentElement, options)
# convert rasters references to base64-encoded strings
if options.embed_rasters:
for elem in doc.documentElement.getElementsByTagName('image') :
embedRasters(elem, options)
# properly size the SVG document (ideally width/height should be 100% with a viewBox)
if options.enable_viewboxing:
properlySizeDoc(doc.documentElement, options)
# output the document as a pretty string with a single space for indent
# NOTE: removed pretty printing because of this problem:
# http://ronrothman.com/public/leftbraned/xml-dom-minidom-toprettyxml-and-silly-whitespace/
# rolled our own serialize function here to save on space, put id first, customize indentation, etc
# out_string = doc.documentElement.toprettyxml(' ')
out_string = serializeXML(doc.documentElement, options) + '\n'
# now strip out empty lines
lines = []
# Get rid of empty lines
for line in out_string.splitlines(True):
if line.strip():
lines.append(line)
# return the string with its XML prolog and surrounding comments
if options.strip_xml_prolog == False:
total_output = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>\n'
else:
total_output = ""
for child in doc.childNodes:
if child.nodeType == 1:
total_output += "".join(lines)
else: # doctypes, entities, comments
total_output += child.toxml() + '\n'
return total_output
# used mostly by unit tests
# input is a filename
# returns the minidom doc representation of the SVG
def scourXmlFile(filename, options=None):
with open(filename, "rb") as f:
in_string = f.read()
out_string = scourString(in_string, options)
return xml.dom.minidom.parseString(out_string.encode('utf-8'))
# GZ: Seems most other commandline tools don't do this, is it really wanted?
class HeaderedFormatter(optparse.IndentedHelpFormatter):
"""
Show application name, version number, and copyright statement
above usage information.
"""
def format_usage(self, usage):
return "%s %s\n%s\n%s" % (APP, VER, COPYRIGHT,
optparse.IndentedHelpFormatter.format_usage(self, usage))
# GZ: would prefer this to be in a function or class scope, but tests etc need
# access to the defaults anyway
_options_parser = optparse.OptionParser(
usage="%prog [-i input.svg] [-o output.svg] [OPTIONS]",
description=("If the input/output files are specified with a svgz"
" extension, then compressed SVG is assumed. If the input file is not"
" specified, stdin is used. If the output file is not specified, "
" stdout is used."),
formatter=HeaderedFormatter(max_help_position=30),
version=VER)
_options_parser.add_option("--disable-simplify-colors",
action="store_false", dest="simple_colors", default=True,
help="won't convert all colors to #RRGGBB format")
_options_parser.add_option("--disable-style-to-xml",
action="store_false", dest="style_to_xml", default=True,
help="won't convert styles into XML attributes")
_options_parser.add_option("--disable-group-collapsing",
action="store_false", dest="group_collapse", default=True,
help="won't collapse <g> elements")
_options_parser.add_option("--create-groups",
action="store_true", dest="group_create", default=False,
help="create <g> elements for runs of elements with identical attributes")
_options_parser.add_option("--enable-id-stripping",
action="store_true", dest="strip_ids", default=False,
help="remove all un-referenced ID attributes")
_options_parser.add_option("--enable-comment-stripping",
action="store_true", dest="strip_comments", default=False,
help="remove all <!-- --> comments")
_options_parser.add_option("--shorten-ids",
action="store_true", dest="shorten_ids", default=False,
help="shorten all ID attributes to the least number of letters possible")
_options_parser.add_option("--shorten-ids-prefix",
action="store", type="string", dest="shorten_ids_prefix", default="",
help="shorten all ID attributes with a custom prefix")
_options_parser.add_option("--disable-embed-rasters",
action="store_false", dest="embed_rasters", default=True,
help="won't embed rasters as base64-encoded data")
_options_parser.add_option("--keep-unreferenced-defs",
action="store_true", dest="keep_defs", default=False,
help="won't remove elements within the defs container that are unreferenced")
_options_parser.add_option("--keep-editor-data",
action="store_true", dest="keep_editor_data", default=False,
help="won't remove Inkscape, Sodipodi or Adobe Illustrator elements and attributes")
_options_parser.add_option("--remove-metadata",
action="store_true", dest="remove_metadata", default=False,
help="remove <metadata> elements (which may contain license metadata etc.)")
_options_parser.add_option("--renderer-workaround",
action="store_true", dest="renderer_workaround", default=True,
help="work around various renderer bugs (currently only librsvg) (default)")
_options_parser.add_option("--no-renderer-workaround",
action="store_false", dest="renderer_workaround", default=True,
help="do not work around various renderer bugs (currently only librsvg)")
_options_parser.add_option("--strip-xml-prolog",
action="store_true", dest="strip_xml_prolog", default=False,
help="won't output the <?xml ?> prolog")
_options_parser.add_option("--enable-viewboxing",
action="store_true", dest="enable_viewboxing", default=False,
help="changes document width/height to 100%/100% and creates viewbox coordinates")
# GZ: this is confusing, most people will be thinking in terms of
# decimal places, which is not what decimal precision is doing
_options_parser.add_option("-p", "--set-precision",
action="store", type=int, dest="digits", default=5,
help="set number of significant digits (default: %default)")
_options_parser.add_option("-i",
action="store", dest="infilename", help=optparse.SUPPRESS_HELP)
_options_parser.add_option("-o",
action="store", dest="outfilename", help=optparse.SUPPRESS_HELP)
_options_parser.add_option("-q", "--quiet",
action="store_true", dest="quiet", default=False,
help="suppress non-error output")
_options_parser.add_option("--indent",
action="store", type="string", dest="indent_type", default="space",
help="indentation of the output: none, space, tab (default: %default)")
_options_parser.add_option("--nindent",
action="store", type=int, dest="indent_depth", default=1,
help="depth of the indentation, i.e. number of spaces/tabs: (default: %default)")
_options_parser.add_option("--no-line-breaks",
action="store_false", dest="newlines", default=True,
help="do not create line breaks in output (also disables indentation; might be overriden by xml:space=\"preserve\")")
_options_parser.add_option("--strip-xml-space",
action="store_true", dest="strip_xml_space_attribute", default=False,
help="strip the xml:space=\"preserve\" attribute from the root SVG element")
_options_parser.add_option("--protect-ids-noninkscape",
action="store_true", dest="protect_ids_noninkscape", default=False,
help="Don't change IDs not ending with a digit")
_options_parser.add_option("--protect-ids-list",
action="store", type="string", dest="protect_ids_list", default=None,
help="Don't change IDs given in a comma-separated list")
_options_parser.add_option("--protect-ids-prefix",
action="store", type="string", dest="protect_ids_prefix", default=None,
help="Don't change IDs starting with the given prefix")
def maybe_gziped_file(filename, mode="r"):
if os.path.splitext(filename)[1].lower() in (".svgz", ".gz"):
import gzip
return gzip.GzipFile(filename, mode)
return open(filename, mode)
def parse_args(args=None, ignore_additional_args=False):
options, rargs = _options_parser.parse_args(args)
if rargs and not ignore_additional_args:
_options_parser.error("Additional arguments not handled: %r, see --help" % rargs)
if options.digits < 0:
_options_parser.error("Can't have negative significant digits, see --help")
if not options.indent_type in ["tab", "space", "none"]:
_options_parser.error("Invalid value for --indent, see --help")
if options.indent_depth < 0:
_options_parser.error("Value for --nindent should be positive (or zero), see --help")
if options.infilename and options.outfilename and options.infilename == options.outfilename:
_options_parser.error("Input filename is the same as output filename")
if options.infilename:
infile = maybe_gziped_file(options.infilename, "rb")
# GZ: could catch a raised IOError here and report
else:
# GZ: could sniff for gzip compression here
#
# open the binary buffer of stdin and let XML parser handle decoding
try:
infile = sys.stdin.buffer
except AttributeError:
infile = sys.stdin
if options.outfilename:
outfile = maybe_gziped_file(options.outfilename, "wb")
else:
# open the binary buffer of stdout as the output is already encoded
try:
outfile = sys.stdout.buffer
except AttributeError:
outfile = sys.stdout
return options, [infile, outfile]
def getReport():
return ' Number of elements removed: ' + str(numElemsRemoved) + os.linesep + \
' Number of attributes removed: ' + str(numAttrsRemoved) + os.linesep + \
' Number of unreferenced id attributes removed: ' + str(numIDsRemoved) + os.linesep + \
' Number of style properties fixed: ' + str(numStylePropsFixed) + os.linesep + \
' Number of raster images embedded inline: ' + str(numRastersEmbedded) + os.linesep + \
' Number of path segments reduced/removed: ' + str(numPathSegmentsReduced) + os.linesep + \
' Number of bytes saved in path data: ' + str(numBytesSavedInPathData) + os.linesep + \
' Number of bytes saved in colors: ' + str(numBytesSavedInColors) + os.linesep + \
' Number of points removed from polygons: ' + str(numPointsRemovedFromPolygon) + os.linesep + \
' Number of bytes saved in comments: ' + str(numCommentBytes) + os.linesep + \
' Number of bytes saved in id attributes: ' + str(numBytesSavedInIDs) + os.linesep + \
' Number of bytes saved in lengths: ' + str(numBytesSavedInLengths) + os.linesep + \
' Number of bytes saved in transformations: ' + str(numBytesSavedInTransforms)
def generateDefaultOptions():
## FIXME: clean up this mess/hack and refactor arg parsing to argparse
class Struct:
def __init__(self, **entries):
self.__dict__.update(entries)
d = parse_args(args = [], ignore_additional_args = True)[0].__dict__.copy()
return Struct(**d)
def start(options, input, output):
if sys.platform == "win32":
from time import clock as get_tick
else:
# GZ: is this different from time.time() in any way?
def get_tick():
return os.times()[0]
start = get_tick()
if not options.quiet:
print("%s %s\n%s" % (APP, VER, COPYRIGHT), file=sys.stderr)
# do the work
in_string = input.read()
out_string = scourString(in_string, options).encode("UTF-8")
output.write(out_string)
# Close input and output files
input.close()
output.close()
end = get_tick()
# GZ: not using globals would be good too
if not options.quiet:
print(' File:', input.name, os.linesep + \
' Time taken:', str(end-start) + 's', os.linesep + \
getReport(), file=sys.stderr)
oldsize = len(in_string)
newsize = len(out_string)
sizediff = (newsize / oldsize) * 100
print(' Original file size:', oldsize, 'bytes;', \
'new file size:', newsize, 'bytes (' + str(sizediff)[:5] + '%)', file=sys.stderr)
def run():
options, (input, output) = parse_args()
start(options, input, output)
if __name__ == '__main__':
run()
|