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authorTom Sepez <tsepez@chromium.org>2015-01-21 14:38:33 -0800
committerTom Sepez <tsepez@chromium.org>2015-01-21 14:38:33 -0800
commit9dcd7b841a6ec11b3cfff39f8d2d1f033dea9705 (patch)
treee6d363241976a3fdc85ca2f27e6035ad83e90cb8 /testing/tools/fixup_pdf_template.py
parentdc43b322915c5256a5a9458e6b8cd28bcecf91ae (diff)
downloadpdfium-9dcd7b841a6ec11b3cfff39f8d2d1f033dea9705.tar.xz
Add tests for GetNamedDests() API.
Follow-on work from patch at https://codereview.chromium.org/845643008. This incorporates that patch, plus adds tests for it and similar conditions. A few changes are introduced to correct expected behaviour. This also incoprorates Deepak's fix in https://codereview.chromium.org/845643008/ This incorporates a formerly unlanded tool to generate small valid PDF files from template input, which is needed to cover all the error cases here. See https://codereview.chromium.org/791993006/ BUG=450133 R=bo_xu@foxitsoftware.com Review URL: https://codereview.chromium.org/837723009
Diffstat (limited to 'testing/tools/fixup_pdf_template.py')
-rwxr-xr-xtesting/tools/fixup_pdf_template.py89
1 files changed, 89 insertions, 0 deletions
diff --git a/testing/tools/fixup_pdf_template.py b/testing/tools/fixup_pdf_template.py
new file mode 100755
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+++ b/testing/tools/fixup_pdf_template.py
@@ -0,0 +1,89 @@
+#!/usr/bin/env python
+# Copyright 2014 The PDFium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Expands a hand-written PDF testcase (template) into a valid PDF file.
+
+There are several places in a PDF file where byte-offsets are required. This
+script replaces {{name}}-style variables in the input with calculated results
+
+ {{header}} - expands to the header comment required for PDF files.
+ {{xref}} - expands to a generated xref table, noting the offset.
+ {{startxref} - expands to a startxref directive followed by correct offset.
+ {{object x y}} - expands to |x y obj| declaration, noting the offset."""
+
+import optparse
+import os
+import re
+import sys
+
+class TemplateProcessor:
+ HEADER_TOKEN = '{{header}}'
+ HEADER_REPLACEMENT = '%PDF-1.7\n%\xa0\xf2\xa4\xf4'
+
+ XREF_TOKEN = '{{xref}}'
+ XREF_REPLACEMENT = 'xref\n%d %d\n'
+ XREF_REPLACEMENT_N = '%010d %05d n\n'
+ XREF_REPLACEMENT_F = '0000000000 65536 f\n'
+
+ STARTXREF_TOKEN= '{{startxref}}'
+ STARTXREF_REPLACEMENT = 'startxref\n%d'
+
+ OBJECT_PATTERN = r'\{\{object\s+(\d+)\s+(\d+)\}\}'
+ OBJECT_REPLACEMENT = r'\1 \2 obj'
+
+ def __init__(self):
+ self.offset = 0
+ self.xref_offset = 0
+ self.max_object_number = 0
+ self.objects = { }
+
+ def insert_xref_entry(self, object_number, generation_number):
+ self.objects[object_number] = (self.offset, generation_number)
+ self.max_object_number = max(self.max_object_number, object_number)
+
+ def generate_xref_table(self):
+ result = self.XREF_REPLACEMENT % (0, self.max_object_number + 1)
+ for i in range(0, self.max_object_number + 1):
+ if i in self.objects:
+ result += self.XREF_REPLACEMENT_N % self.objects[i]
+ else:
+ result += self.XREF_REPLACEMENT_F
+ return result
+
+ def process_line(self, line):
+ if self.HEADER_TOKEN in line:
+ line = line.replace(self.HEADER_TOKEN, self.HEADER_REPLACEMENT)
+ if self.XREF_TOKEN in line:
+ self.xref_offset = self.offset
+ line = self.generate_xref_table()
+ if self.STARTXREF_TOKEN in line:
+ replacement = self.STARTXREF_REPLACEMENT % self.xref_offset
+ line = line.replace(self.STARTXREF_TOKEN, replacement)
+ match = re.match(self.OBJECT_PATTERN, line)
+ if match:
+ self.insert_xref_entry(int(match.group(1)), int(match.group(2)))
+ line = re.sub(self.OBJECT_PATTERN, self.OBJECT_REPLACEMENT, line)
+ self.offset += len(line)
+ return line
+
+def expand_file(input_filename):
+ (input_root, extension) = os.path.splitext(input_filename)
+ output_filename = input_root + '.pdf'
+ processor = TemplateProcessor()
+ try:
+ with open(input_filename, 'r') as infile:
+ with open(output_filename, 'w') as outfile:
+ for line in infile:
+ outfile.write(processor.process_line(line))
+ except IOError:
+ print >> sys.stderr, 'failed to process %s' % input_filename
+
+def main():
+ for arg in sys.argv[1:]:
+ expand_file(arg)
+ return 0
+
+if __name__ == '__main__':
+ sys.exit(main())