Repository of shared resources. ResourceManager facilitates reuse of shared resources such as fonts and images so that large objects are not allocated multiple times.
| 122 | ## Resource Manager |
| 123 | ## |
| 124 | class PDFResourceManager(object): |
| 125 | |
| 126 | """Repository of shared resources. |
| 127 | |
| 128 | ResourceManager facilitates reuse of shared resources |
| 129 | such as fonts and images so that large objects are not |
| 130 | allocated multiple times. |
| 131 | """ |
| 132 | debug = 0 |
| 133 | |
| 134 | def __init__(self, caching=True): |
| 135 | self.caching = caching |
| 136 | self._cached_fonts = {} |
| 137 | return |
| 138 | |
| 139 | def get_procset(self, procs): |
| 140 | for proc in procs: |
| 141 | if proc is LITERAL_PDF: |
| 142 | pass |
| 143 | elif proc is LITERAL_TEXT: |
| 144 | pass |
| 145 | else: |
| 146 | #raise PDFResourceError('ProcSet %r is not supported.' % proc) |
| 147 | pass |
| 148 | return |
| 149 | |
| 150 | def get_cmap(self, cmapname, strict=False): |
| 151 | try: |
| 152 | return CMapDB.get_cmap(cmapname) |
| 153 | except CMapDB.CMapNotFound: |
| 154 | if strict: raise |
| 155 | return CMap() |
| 156 | |
| 157 | def get_font(self, objid, spec): |
| 158 | if objid and objid in self._cached_fonts: |
| 159 | font = self._cached_fonts[objid] |
| 160 | else: |
| 161 | if 2 <= self.debug: |
| 162 | print >>sys.stderr, 'get_font: create: objid=%r, spec=%r' % (objid, spec) |
| 163 | if STRICT: |
| 164 | if spec['Type'] is not LITERAL_FONT: |
| 165 | raise PDFFontError('Type is not /Font') |
| 166 | # Create a Font object. |
| 167 | if 'Subtype' in spec: |
| 168 | subtype = literal_name(spec['Subtype']) |
| 169 | else: |
| 170 | if STRICT: |
| 171 | raise PDFFontError('Font Subtype is not specified.') |
| 172 | subtype = 'Type1' |
| 173 | if subtype in ('Type1', 'MMType1'): |
| 174 | # Type1 Font |
| 175 | font = PDFType1Font(self, spec) |
| 176 | elif subtype == 'TrueType': |
| 177 | # TrueType Font |
| 178 | font = PDFTrueTypeFont(self, spec) |
| 179 | elif subtype == 'Type3': |
| 180 | # Type3 Font |
| 181 | font = PDFType3Font(self, spec) |
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