summaryrefslogtreecommitdiff
path: root/testing/tools/fixup_pdf_template.py
diff options
context:
space:
mode:
authorTom Sepez <tsepez@chromium.org>2015-01-22 11:20:06 -0800
committerTom Sepez <tsepez@chromium.org>2015-01-22 11:20:06 -0800
commitc8f6ab628c4bdf90dcee3d5ac153beb043a42f92 (patch)
treefa9d7cfadb37a382ce08bffcecad897d33ff04a8 /testing/tools/fixup_pdf_template.py
parent70ad112e874cd076144cc1254db254ee651b5c81 (diff)
downloadpdfium-c8f6ab628c4bdf90dcee3d5ac153beb043a42f92.tar.xz
Merge to XFA: Add embeddertests.
This brings in: 83f96a0 Add API tests: NamedDestsByName, DestGetPageIndex. 9dcd7b8 Add tests for GetNamedDests() API. TBR=bo_xu@foxitsoftware.com Review URL: https://codereview.chromium.org/849693007
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
index 0000000000..873caeedde
--- /dev/null
+++ 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())