Diffstat (limited to 'noncore/unsupported/qpdf/xpdf/Stream.h') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | noncore/unsupported/qpdf/xpdf/Stream.h | 113 |
1 files changed, 95 insertions, 18 deletions
diff --git a/noncore/unsupported/qpdf/xpdf/Stream.h b/noncore/unsupported/qpdf/xpdf/Stream.h index 1f9c561..3319dcc 100644 --- a/noncore/unsupported/qpdf/xpdf/Stream.h +++ b/noncore/unsupported/qpdf/xpdf/Stream.h @@ -4,3 +4,3 @@ // -// Copyright 1996 Derek B. Noonburg +// Copyright 1996-2002 Glyph & Cog, LLC // @@ -80,4 +80,6 @@ public: - // Go to a position in the stream. - virtual void setPos(int pos) = 0; + // Go to a position in the stream. If <dir> is negative, the + // position is from the end of the file; otherwise the position is + // from the start of the file. + virtual void setPos(Guint pos, int dir = 0) = 0; @@ -120,4 +122,5 @@ public: virtual ~BaseStream(); - virtual Stream *makeSubStream(int start, int length, Object *dict) = 0; - virtual void setPos(int pos) = 0; + virtual Stream *makeSubStream(Guint start, GBool limited, + Guint length, Object *dict) = 0; + virtual void setPos(Guint pos, int dir = 0) = 0; virtual BaseStream *getBaseStream() { return this; } @@ -126,3 +129,3 @@ public: // Get/set position of first byte of stream within the file. - virtual int getStart() = 0; + virtual Guint getStart() = 0; virtual void moveStart(int delta) = 0; @@ -131,3 +134,4 @@ public: // Set decryption for this stream. - void doDecryption(Guchar *fileKey, int keyLength, int objNum, int objGen); + virtual void doDecryption(Guchar *fileKey, int keyLength, + int objNum, int objGen); #endif @@ -158,3 +162,3 @@ public: virtual int getPos() { return str->getPos(); } - virtual void setPos(int pos); + virtual void setPos(Guint pos, int dir = 0); virtual BaseStream *getBaseStream() { return str->getBaseStream(); } @@ -244,5 +248,7 @@ public: - FileStream(FILE *fA, int startA, int lengthA, Object *dictA); + FileStream(FILE *fA, Guint startA, GBool limitedA, + Guint lengthA, Object *dictA); virtual ~FileStream(); - virtual Stream *makeSubStream(int startA, int lengthA, Object *dictA); + virtual Stream *makeSubStream(Guint startA, GBool limitedA, + Guint lengthA, Object *dictA); virtual StreamKind getKind() { return strFile; } @@ -255,5 +261,5 @@ public: virtual int getPos() { return bufPos + (bufPtr - buf); } - virtual void setPos(int pos); + virtual void setPos(Guint pos, int dir = 0); virtual GBool isBinary(GBool last = gTrue) { return last; } - virtual int getStart() { return start; } + virtual Guint getStart() { return start; } virtual void moveStart(int delta); @@ -265,4 +271,5 @@ private: FILE *f; - int start; - int length; + Guint start; + GBool limited; + Guint length; char buf[fileStreamBufSize]; @@ -270,4 +277,42 @@ private: char *bufEnd; - int bufPos; + Guint bufPos; int savePos; + GBool saved; +}; + +//------------------------------------------------------------------------ +// MemStream +//------------------------------------------------------------------------ + +class MemStream: public BaseStream { +public: + + MemStream(char *bufA, Guint lengthA, Object *dictA); + virtual ~MemStream(); + virtual Stream *makeSubStream(Guint start, GBool limited, + Guint lengthA, Object *dictA); + virtual StreamKind getKind() { return strWeird; } + virtual void reset(); + virtual void close(); + virtual int getChar() + { return (bufPtr < bufEnd) ? (*bufPtr++ & 0xff) : EOF; } + virtual int lookChar() + { return (bufPtr < bufEnd) ? (*bufPtr & 0xff) : EOF; } + virtual int getPos() { return bufPtr - buf; } + virtual void setPos(Guint pos, int dir = 0); + virtual GBool isBinary(GBool last = gTrue) { return last; } + virtual Guint getStart() { return 0; } + virtual void moveStart(int delta); +#ifndef NO_DECRYPTION + virtual void doDecryption(Guchar *fileKey, int keyLength, + int objNum, int objGen); +#endif + +private: + + char *buf; + Guint length; + GBool needFree; + char *bufEnd; + char *bufPtr; }; @@ -289,3 +334,4 @@ public: virtual ~EmbedStream(); - virtual Stream *makeSubStream(int start, int length, Object *dictA); + virtual Stream *makeSubStream(Guint start, GBool limited, + Guint length, Object *dictA); virtual StreamKind getKind() { return str->getKind(); } @@ -295,5 +341,5 @@ public: virtual int getPos() { return str->getPos(); } - virtual void setPos(int pos); + virtual void setPos(Guint pos, int dir = 0); virtual GBool isBinary(GBool last = gTrue) { return last; } - virtual int getStart(); + virtual Guint getStart(); virtual void moveStart(int delta); @@ -661,2 +707,33 @@ private: //------------------------------------------------------------------------ +// ASCIIHexEncoder +//------------------------------------------------------------------------ + +class ASCIIHexEncoder: public FilterStream { +public: + + ASCIIHexEncoder(Stream *strA); + virtual ~ASCIIHexEncoder(); + virtual StreamKind getKind() { return strWeird; } + virtual void reset(); + virtual void close(); + virtual int getChar() + { return (bufPtr >= bufEnd && !fillBuf()) ? EOF : (*bufPtr++ & 0xff); } + virtual int lookChar() + { return (bufPtr >= bufEnd && !fillBuf()) ? EOF : (*bufPtr & 0xff); } + virtual GString *getPSFilter(char *indent) { return NULL; } + virtual GBool isBinary(GBool last = gTrue) { return gFalse; } + virtual GBool isEncoder() { return gTrue; } + +private: + + char buf[4]; + char *bufPtr; + char *bufEnd; + int lineLen; + GBool eof; + + GBool fillBuf(); +}; + +//------------------------------------------------------------------------ // ASCII85Encoder |