This file is indexed.

/usr/lib/python3/dist-packages/PIL/EpsImagePlugin.py is in python3-pil 3.1.2-0ubuntu1.

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
#
# The Python Imaging Library.
# $Id$
#
# EPS file handling
#
# History:
# 1995-09-01 fl   Created (0.1)
# 1996-05-18 fl   Don't choke on "atend" fields, Ghostscript interface (0.2)
# 1996-08-22 fl   Don't choke on floating point BoundingBox values
# 1996-08-23 fl   Handle files from Macintosh (0.3)
# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.4)
# 2003-09-07 fl   Check gs.close status (from Federico Di Gregorio) (0.5)
# 2014-05-07 e    Handling of EPS with binary preview and fixed resolution
#                 resizing
#
# Copyright (c) 1997-2003 by Secret Labs AB.
# Copyright (c) 1995-2003 by Fredrik Lundh
#
# See the README file for information on usage and redistribution.
#

import re
import io
import sys
from PIL import Image, ImageFile, _binary

__version__ = "0.5"

#
# --------------------------------------------------------------------

i32 = _binary.i32le
o32 = _binary.o32le

split = re.compile(r"^%%([^:]*):[ \t]*(.*)[ \t]*$")
field = re.compile(r"^%[%!\w]([^:]*)[ \t]*$")

gs_windows_binary = None
if sys.platform.startswith('win'):
    import shutil
    if hasattr(shutil, 'which'):
        which = shutil.which
    else:
        # Python < 3.3
        import distutils.spawn
        which = distutils.spawn.find_executable
    for binary in ('gswin32c', 'gswin64c', 'gs'):
        if which(binary) is not None:
            gs_windows_binary = binary
            break
    else:
        gs_windows_binary = False


def has_ghostscript():
    if gs_windows_binary:
        return True
    if not sys.platform.startswith('win'):
        import subprocess
        try:
            gs = subprocess.Popen(['gs', '--version'], stdout=subprocess.PIPE)
            gs.stdout.read()
            return True
        except OSError:
            # no ghostscript
            pass
    return False


def Ghostscript(tile, size, fp, scale=1):
    """Render an image using Ghostscript"""

    # Unpack decoder tile
    decoder, tile, offset, data = tile[0]
    length, bbox = data

    # Hack to support hi-res rendering
    scale = int(scale) or 1
    # orig_size = size
    # orig_bbox = bbox
    size = (size[0] * scale, size[1] * scale)
    # resolution is dependent on bbox and size
    res = (float((72.0 * size[0]) / (bbox[2]-bbox[0])),
           float((72.0 * size[1]) / (bbox[3]-bbox[1])))
    # print("Ghostscript", scale, size, orig_size, bbox, orig_bbox, res)

    import os
    import subprocess
    import tempfile

    out_fd, outfile = tempfile.mkstemp()
    os.close(out_fd)

    infile_temp = None
    if hasattr(fp, 'name') and os.path.exists(fp.name):
        infile = fp.name
    else:
        in_fd, infile_temp = tempfile.mkstemp()
        os.close(in_fd)
        infile = infile_temp

        # ignore length and offset!
        # ghostscript can read it
        # copy whole file to read in ghostscript
        with open(infile_temp, 'wb') as f:
            # fetch length of fp
            fp.seek(0, 2)
            fsize = fp.tell()
            # ensure start position
            # go back
            fp.seek(0)
            lengthfile = fsize
            while lengthfile > 0:
                s = fp.read(min(lengthfile, 100*1024))
                if not s:
                    break
                lengthfile -= len(s)
                f.write(s)

    # Build ghostscript command
    command = ["gs",
               "-q",                         # quiet mode
               "-g%dx%d" % size,             # set output geometry (pixels)
               "-r%fx%f" % res,              # set input DPI (dots per inch)
               "-dNOPAUSE",                  # don't pause between pages,
               "-dSAFER",                    # safe mode
               "-sDEVICE=ppmraw",            # ppm driver
               "-sOutputFile=%s" % outfile,  # output file
               "-c", "%d %d translate" % (-bbox[0], -bbox[1]),
                                             # adjust for image origin
               "-f", infile,                 # input file
               ]

    if gs_windows_binary is not None:
        if not gs_windows_binary:
            raise WindowsError('Unable to locate Ghostscript on paths')
        command[0] = gs_windows_binary

    # push data through ghostscript
    try:
        gs = subprocess.Popen(command, stdin=subprocess.PIPE,
                              stdout=subprocess.PIPE)
        gs.stdin.close()
        status = gs.wait()
        if status:
            raise IOError("gs failed (status %d)" % status)
        im = Image.core.open_ppm(outfile)
    finally:
        try:
            os.unlink(outfile)
            if infile_temp:
                os.unlink(infile_temp)
        except OSError:
            pass

    return im


class PSFile(object):
    """
    Wrapper for bytesio object that treats either CR or LF as end of line.
    """
    def __init__(self, fp):
        self.fp = fp
        self.char = None

    def seek(self, offset, whence=0):
        self.char = None
        self.fp.seek(offset, whence)

    def readline(self):
        s = self.char or b""
        self.char = None

        c = self.fp.read(1)
        while c not in b"\r\n":
            s = s + c
            c = self.fp.read(1)

        self.char = self.fp.read(1)
        # line endings can be 1 or 2 of \r \n, in either order
        if self.char in b"\r\n":
            self.char = None

        return s.decode('latin-1')


def _accept(prefix):
    return prefix[:4] == b"%!PS" or \
           (len(prefix) >= 4 and i32(prefix) == 0xC6D3D0C5)

##
# Image plugin for Encapsulated Postscript.  This plugin supports only
# a few variants of this format.


class EpsImageFile(ImageFile.ImageFile):
    """EPS File Parser for the Python Imaging Library"""

    format = "EPS"
    format_description = "Encapsulated Postscript"

    mode_map = {1: "L", 2: "LAB", 3: "RGB"}

    def _open(self):
        (length, offset) = self._find_offset(self.fp)

        # Rewrap the open file pointer in something that will
        # convert line endings and decode to latin-1.
        try:
            if bytes is str:
                # Python2, no encoding conversion necessary
                fp = open(self.fp.name, "Ur")
            else:
                # Python3, can use bare open command.
                fp = open(self.fp.name, "Ur", encoding='latin-1')
        except:
            # Expect this for bytesio/stringio
            fp = PSFile(self.fp)

        # go to offset - start of "%!PS"
        fp.seek(offset)

        box = None

        self.mode = "RGB"
        self.size = 1, 1  # FIXME: huh?

        #
        # Load EPS header

        s = fp.readline().strip('\r\n')

        while s:
            if len(s) > 255:
                raise SyntaxError("not an EPS file")

            try:
                m = split.match(s)
            except re.error as v:
                raise SyntaxError("not an EPS file")

            if m:
                k, v = m.group(1, 2)
                self.info[k] = v
                if k == "BoundingBox":
                    try:
                        # Note: The DSC spec says that BoundingBox
                        # fields should be integers, but some drivers
                        # put floating point values there anyway.
                        box = [int(float(i)) for i in v.split()]
                        self.size = box[2] - box[0], box[3] - box[1]
                        self.tile = [("eps", (0, 0) + self.size, offset,
                                      (length, box))]
                    except:
                        pass

            else:
                m = field.match(s)
                if m:
                    k = m.group(1)

                    if k == "EndComments":
                        break
                    if k[:8] == "PS-Adobe":
                        self.info[k[:8]] = k[9:]
                    else:
                        self.info[k] = ""
                elif s[0] == '%':
                    # handle non-DSC Postscript comments that some
                    # tools mistakenly put in the Comments section
                    pass
                else:
                    raise IOError("bad EPS header")

            s = fp.readline().strip('\r\n')

            if s[:1] != "%":
                break

        #
        # Scan for an "ImageData" descriptor

        while s[:1] == "%":

            if len(s) > 255:
                raise SyntaxError("not an EPS file")

            if s[:11] == "%ImageData:":
                # Encoded bitmapped image.
                x, y, bi, mo = s[11:].split(None, 7)[:4]

                if int(bi) != 8:
                    break
                try:
                    self.mode = self.mode_map[int(mo)]
                except ValueError:
                    break

                self.size = int(x), int(y)
                return

            s = fp.readline().strip('\r\n')
            if not s:
                break

        if not box:
            raise IOError("cannot determine EPS bounding box")

    def _find_offset(self, fp):

        s = fp.read(160)

        if s[:4] == b"%!PS":
            # for HEAD without binary preview
            fp.seek(0, 2)
            length = fp.tell()
            offset = 0
        elif i32(s[0:4]) == 0xC6D3D0C5:
            # FIX for: Some EPS file not handled correctly / issue #302
            # EPS can contain binary data
            # or start directly with latin coding
            # more info see:
            # http://partners.adobe.com/public/developer/en/ps/5002.EPSF_Spec.pdf
            offset = i32(s[4:8])
            length = i32(s[8:12])
        else:
            raise SyntaxError("not an EPS file")

        return (length, offset)

    def load(self, scale=1):
        # Load EPS via Ghostscript
        if not self.tile:
            return
        self.im = Ghostscript(self.tile, self.size, self.fp, scale)
        self.mode = self.im.mode
        self.size = self.im.size
        self.tile = []

    def load_seek(self, *args, **kwargs):
        # we can't incrementally load, so force ImageFile.parser to
        # use our custom load method by defining this method.
        pass


#
# --------------------------------------------------------------------

def _save(im, fp, filename, eps=1):
    """EPS Writer for the Python Imaging Library."""

    #
    # make sure image data is available
    im.load()

    #
    # determine postscript image mode
    if im.mode == "L":
        operator = (8, 1, "image")
    elif im.mode == "RGB":
        operator = (8, 3, "false 3 colorimage")
    elif im.mode == "CMYK":
        operator = (8, 4, "false 4 colorimage")
    else:
        raise ValueError("image mode is not supported")

    class NoCloseStream(object):
        def __init__(self, fp):
            self.fp = fp

        def __getattr__(self, name):
            return getattr(self.fp, name)

        def close(self):
            pass

    base_fp = fp
    if fp != sys.stdout:
        fp = NoCloseStream(fp)
        if sys.version_info[0] > 2:
            fp = io.TextIOWrapper(fp, encoding='latin-1')

    if eps:
        #
        # write EPS header
        fp.write("%!PS-Adobe-3.0 EPSF-3.0\n")
        fp.write("%%Creator: PIL 0.1 EpsEncode\n")
        # fp.write("%%CreationDate: %s"...)
        fp.write("%%%%BoundingBox: 0 0 %d %d\n" % im.size)
        fp.write("%%Pages: 1\n")
        fp.write("%%EndComments\n")
        fp.write("%%Page: 1 1\n")
        fp.write("%%ImageData: %d %d " % im.size)
        fp.write("%d %d 0 1 1 \"%s\"\n" % operator)

    #
    # image header
    fp.write("gsave\n")
    fp.write("10 dict begin\n")
    fp.write("/buf %d string def\n" % (im.size[0] * operator[1]))
    fp.write("%d %d scale\n" % im.size)
    fp.write("%d %d 8\n" % im.size)  # <= bits
    fp.write("[%d 0 0 -%d 0 %d]\n" % (im.size[0], im.size[1], im.size[1]))
    fp.write("{ currentfile buf readhexstring pop } bind\n")
    fp.write(operator[2] + "\n")
    if hasattr(fp, "flush"):
        fp.flush()

    ImageFile._save(im, base_fp, [("eps", (0, 0)+im.size, 0, None)])

    fp.write("\n%%%%EndBinary\n")
    fp.write("grestore end\n")
    if hasattr(fp, "flush"):
        fp.flush()

#
# --------------------------------------------------------------------

Image.register_open(EpsImageFile.format, EpsImageFile, _accept)

Image.register_save(EpsImageFile.format, _save)

Image.register_extension(EpsImageFile.format, ".ps")
Image.register_extension(EpsImageFile.format, ".eps")

Image.register_mime(EpsImageFile.format, "application/postscript")