Add debug flags for much of the debug output.
parent
1067cb9f9f
commit
36977fbe08
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@ -65,6 +65,8 @@ LITERAL_CATALOG = LIT('Catalog')
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##
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##
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class PDFBaseXRef(object):
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class PDFBaseXRef(object):
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debug = False
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def get_trailer(self):
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def get_trailer(self):
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raise NotImplementedError
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raise NotImplementedError
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@ -122,7 +124,7 @@ class PDFXRef(PDFBaseXRef):
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if use != b'n':
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if use != b'n':
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continue
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continue
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self.offsets[objid] = (None, long(pos), int(genno))
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self.offsets[objid] = (None, long(pos), int(genno))
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logging.info('xref objects: %r' % self.offsets)
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if self.debug: logging.info('xref objects: %r' % self.offsets)
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self.load_trailer(parser)
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self.load_trailer(parser)
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return
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return
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@ -173,7 +175,7 @@ class PDFXRefFallback(PDFXRef):
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if line.startswith(b'trailer'):
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if line.startswith(b'trailer'):
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parser.seek(pos)
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parser.seek(pos)
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self.load_trailer(parser)
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self.load_trailer(parser)
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logging.info('trailer: %r' % self.get_trailer())
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if self.debug: logging.info('trailer: %r' % self.get_trailer())
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break
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break
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m = self.PDFOBJ_CUE.match(line)
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m = self.PDFOBJ_CUE.match(line)
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if not m:
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if not m:
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@ -212,6 +214,8 @@ class PDFXRefFallback(PDFXRef):
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##
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##
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class PDFXRefStream(PDFBaseXRef):
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class PDFXRefStream(PDFBaseXRef):
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debug = False
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def __init__(self):
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def __init__(self):
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self.data = None
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self.data = None
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self.entlen = None
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self.entlen = None
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@ -238,6 +242,7 @@ class PDFXRefStream(PDFBaseXRef):
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self.data = stream.get_data()
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self.data = stream.get_data()
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self.entlen = self.fl1+self.fl2+self.fl3
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self.entlen = self.fl1+self.fl2+self.fl3
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self.trailer = stream.attrs
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self.trailer = stream.attrs
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if self.debug:
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logging.info('xref stream: objid=%s, fields=%d,%d,%d' %
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logging.info('xref stream: objid=%s, fields=%d,%d,%d' %
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(', '.join(map(repr, self.ranges)),
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(', '.join(map(repr, self.ranges)),
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self.fl1, self.fl2, self.fl3))
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self.fl1, self.fl2, self.fl3))
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@ -761,6 +766,7 @@ class PDFDocument(object):
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prev = line
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prev = line
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else:
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else:
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raise PDFNoValidXRef('Unexpected EOF')
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raise PDFNoValidXRef('Unexpected EOF')
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if self.debug:
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logging.info('xref found: pos=%r' % prev)
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logging.info('xref found: pos=%r' % prev)
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return long(prev)
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return long(prev)
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@ -773,6 +779,7 @@ class PDFDocument(object):
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(pos, token) = parser.nexttoken()
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(pos, token) = parser.nexttoken()
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except PSEOF:
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except PSEOF:
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raise PDFNoValidXRef('Unexpected EOF')
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raise PDFNoValidXRef('Unexpected EOF')
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if self.debug:
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logging.info('read_xref_from: start=%d, token=%r' % (start, token))
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logging.info('read_xref_from: start=%d, token=%r' % (start, token))
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if isinstance(token, int):
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if isinstance(token, int):
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# XRefStream: PDF-1.5
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# XRefStream: PDF-1.5
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@ -787,6 +794,7 @@ class PDFDocument(object):
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xref.load(parser)
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xref.load(parser)
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xrefs.append(xref)
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xrefs.append(xref)
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trailer = xref.get_trailer()
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trailer = xref.get_trailer()
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if self.debug:
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logging.info('trailer: %r' % trailer)
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logging.info('trailer: %r' % trailer)
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if 'XRefStm' in trailer:
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if 'XRefStm' in trailer:
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pos = int_value(trailer['XRefStm'])
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pos = int_value(trailer['XRefStm'])
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@ -139,6 +139,8 @@ class PDFResourceManager(object):
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allocated multiple times.
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allocated multiple times.
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"""
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"""
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debug = False
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def __init__(self, caching=True):
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def __init__(self, caching=True):
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self.caching = caching
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self.caching = caching
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self._cached_fonts = {}
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self._cached_fonts = {}
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@ -167,6 +169,7 @@ class PDFResourceManager(object):
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if objid and objid in self._cached_fonts:
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if objid and objid in self._cached_fonts:
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font = self._cached_fonts[objid]
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font = self._cached_fonts[objid]
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else:
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else:
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if self.debug:
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logging.info('get_font: create: objid=%r, spec=%r' % (objid, spec))
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logging.info('get_font: create: objid=%r, spec=%r' % (objid, spec))
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if STRICT:
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if STRICT:
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if spec['Type'] is not LITERAL_FONT:
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if spec['Type'] is not LITERAL_FONT:
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@ -799,7 +802,7 @@ class PDFPageInterpreter(object):
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if STRICT:
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if STRICT:
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raise PDFInterpreterError('Undefined xobject id: %r' % xobjid)
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raise PDFInterpreterError('Undefined xobject id: %r' % xobjid)
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return
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return
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logging.info('Processing xobj: %r' % xobj)
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if self.debug: logging.info('Processing xobj: %r' % xobj)
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subtype = xobj.get('Subtype')
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subtype = xobj.get('Subtype')
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if subtype is LITERAL_FORM and 'BBox' in xobj:
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if subtype is LITERAL_FORM and 'BBox' in xobj:
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interpreter = self.dup()
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interpreter = self.dup()
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@ -822,7 +825,7 @@ class PDFPageInterpreter(object):
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return
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return
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def process_page(self, page):
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def process_page(self, page):
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logging.info('Processing page: %r' % page)
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if self.debug: logging.info('Processing page: %r' % page)
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(x0, y0, x1, y1) = page.mediabox
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(x0, y0, x1, y1) = page.mediabox
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if page.rotate == 90:
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if page.rotate == 90:
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ctm = (0, -1, 1, 0, -y0, x1)
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ctm = (0, -1, 1, 0, -y0, x1)
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@ -841,6 +844,7 @@ class PDFPageInterpreter(object):
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# Render the content streams.
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# Render the content streams.
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# This method may be called recursively.
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# This method may be called recursively.
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def render_contents(self, resources, streams, ctm=MATRIX_IDENTITY):
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def render_contents(self, resources, streams, ctm=MATRIX_IDENTITY):
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if self.debug:
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logging.info('render_contents: resources=%r, streams=%r, ctm=%r' %
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logging.info('render_contents: resources=%r, streams=%r, ctm=%r' %
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(resources, streams, ctm))
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(resources, streams, ctm))
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self.init_resources(resources)
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self.init_resources(resources)
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@ -39,6 +39,8 @@ class PDFPage(object):
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beads: a chain that represents natural reading order.
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beads: a chain that represents natural reading order.
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"""
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"""
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debug = False
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def __init__(self, doc, pageid, attrs):
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def __init__(self, doc, pageid, attrs):
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"""Initialize a page object.
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"""Initialize a page object.
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@ -86,12 +88,12 @@ class PDFPage(object):
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if k in klass.INHERITABLE_ATTRS and k not in tree:
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if k in klass.INHERITABLE_ATTRS and k not in tree:
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tree[k] = v
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tree[k] = v
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if tree.get('Type') is LITERAL_PAGES and 'Kids' in tree:
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if tree.get('Type') is LITERAL_PAGES and 'Kids' in tree:
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logging.info('Pages: Kids=%r' % tree['Kids'])
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if klass.debug: logging.info('Pages: Kids=%r' % tree['Kids'])
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for c in list_value(tree['Kids']):
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for c in list_value(tree['Kids']):
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for x in search(c, tree):
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for x in search(c, tree):
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yield x
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yield x
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elif tree.get('Type') is LITERAL_PAGE:
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elif tree.get('Type') is LITERAL_PAGE:
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logging.info('Page: %r' % tree)
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if klass.debug: logging.info('Page: %r' % tree)
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yield (objid, tree)
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yield (objid, tree)
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pages = False
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pages = False
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if 'Pages' in document.catalog:
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if 'Pages' in document.catalog:
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