summaryrefslogtreecommitdiffstats
path: root/kpdf/xpdf/xpdf/CharCodeToUnicode.h
diff options
context:
space:
mode:
Diffstat (limited to 'kpdf/xpdf/xpdf/CharCodeToUnicode.h')
-rw-r--r--kpdf/xpdf/xpdf/CharCodeToUnicode.h117
1 files changed, 117 insertions, 0 deletions
diff --git a/kpdf/xpdf/xpdf/CharCodeToUnicode.h b/kpdf/xpdf/xpdf/CharCodeToUnicode.h
new file mode 100644
index 00000000..04852aea
--- /dev/null
+++ b/kpdf/xpdf/xpdf/CharCodeToUnicode.h
@@ -0,0 +1,117 @@
+//========================================================================
+//
+// CharCodeToUnicode.h
+//
+// Mapping from character codes to Unicode.
+//
+// Copyright 2001-2003 Glyph & Cog, LLC
+//
+//========================================================================
+
+#ifndef CHARCODETOUNICODE_H
+#define CHARCODETOUNICODE_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include "CharTypes.h"
+
+#if MULTITHREADED
+#include "GMutex.h"
+#endif
+
+struct CharCodeToUnicodeString;
+
+//------------------------------------------------------------------------
+
+class CharCodeToUnicode {
+public:
+
+ // Read the CID-to-Unicode mapping for <collection> from the file
+ // specified by <fileName>. Sets the initial reference count to 1.
+ // Returns NULL on failure.
+ static CharCodeToUnicode *parseCIDToUnicode(GString *fileName,
+ GString *collection);
+
+ // Create a Unicode-to-Unicode mapping from the file specified by
+ // <fileName>. Sets the initial reference count to 1. Returns NULL
+ // on failure.
+ static CharCodeToUnicode *parseUnicodeToUnicode(GString *fileName);
+
+ // Create the CharCode-to-Unicode mapping for an 8-bit font.
+ // <toUnicode> is an array of 256 Unicode indexes. Sets the initial
+ // reference count to 1.
+ static CharCodeToUnicode *make8BitToUnicode(Unicode *toUnicode);
+
+ // Parse a ToUnicode CMap for an 8- or 16-bit font.
+ static CharCodeToUnicode *parseCMap(GString *buf, int nBits);
+
+ // Parse a ToUnicode CMap for an 8- or 16-bit font, merging it into
+ // <this>.
+ void mergeCMap(GString *buf, int nBits);
+
+ ~CharCodeToUnicode();
+
+ void incRefCnt();
+ void decRefCnt();
+
+ // Return true if this mapping matches the specified <tagA>.
+ GBool match(GString *tagA);
+
+ // Set the mapping for <c>.
+ void setMapping(CharCode c, Unicode *u, int len);
+
+ // Map a CharCode to Unicode.
+ int mapToUnicode(CharCode c, Unicode *u, int size);
+
+ // Return the mapping's length, i.e., one more than the max char
+ // code supported by the mapping.
+ CharCode getLength() { return mapLen; }
+
+private:
+
+ void parseCMap1(int (*getCharFunc)(void *), void *data, int nBits);
+ void addMapping(CharCode code, char *uStr, int n, int offset);
+ CharCodeToUnicode(GString *tagA);
+ CharCodeToUnicode(GString *tagA, Unicode *mapA,
+ CharCode mapLenA, GBool copyMap,
+ CharCodeToUnicodeString *sMapA,
+ int sMapLenA, int sMapSizeA);
+
+ GString *tag;
+ Unicode *map;
+ CharCode mapLen;
+ CharCodeToUnicodeString *sMap;
+ int sMapLen, sMapSize;
+ int refCnt;
+#if MULTITHREADED
+ GMutex mutex;
+#endif
+};
+
+//------------------------------------------------------------------------
+
+class CharCodeToUnicodeCache {
+public:
+
+ CharCodeToUnicodeCache(int sizeA);
+ ~CharCodeToUnicodeCache();
+
+ // Get the CharCodeToUnicode object for <tag>. Increments its
+ // reference count; there will be one reference for the cache plus
+ // one for the caller of this function. Returns NULL on failure.
+ CharCodeToUnicode *getCharCodeToUnicode(GString *tag);
+
+ // Insert <ctu> into the cache, in the most-recently-used position.
+ void add(CharCodeToUnicode *ctu);
+
+private:
+
+ CharCodeToUnicode **cache;
+ int size;
+};
+
+#endif