author | sandman <sandman> | 2002-05-23 23:51:52 (UTC) |
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committer | sandman <sandman> | 2002-05-23 23:51:52 (UTC) |
commit | 2f3bb7b07f833273d966d41813e68bfe8b9d8d76 (patch) (side-by-side diff) | |
tree | 00beb1bd9e7f4ba79e22334a0d258269b28f4564 /noncore/unsupported/qpdf/xpdf/PSTokenizer.cc | |
parent | 6e82b45dd416ceeba78765717b700e853c96a137 (diff) | |
download | opie-2f3bb7b07f833273d966d41813e68bfe8b9d8d76.zip opie-2f3bb7b07f833273d966d41813e68bfe8b9d8d76.tar.gz opie-2f3bb7b07f833273d966d41813e68bfe8b9d8d76.tar.bz2 |
Port to xpdf 1.01
Diffstat (limited to 'noncore/unsupported/qpdf/xpdf/PSTokenizer.cc') (more/less context) (ignore whitespace changes)
-rw-r--r-- | noncore/unsupported/qpdf/xpdf/PSTokenizer.cc | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/noncore/unsupported/qpdf/xpdf/PSTokenizer.cc b/noncore/unsupported/qpdf/xpdf/PSTokenizer.cc new file mode 100644 index 0000000..8d654bd --- a/dev/null +++ b/noncore/unsupported/qpdf/xpdf/PSTokenizer.cc @@ -0,0 +1,133 @@ +//======================================================================== +// +// PSTokenizer.cc +// +// Copyright 2002 Glyph & Cog, LLC +// +//======================================================================== + +#ifdef __GNUC__ +#pragma implementation +#endif + +#include <stdio.h> +#include <stdlib.h> +#include "PSTokenizer.h" + +//------------------------------------------------------------------------ + +// A '1' in this array means the character is white space. A '1' or +// '2' means the character ends a name or command. +static char specialChars[256] = { + 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, // 0x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 1x + 1, 0, 0, 0, 0, 2, 0, 0, 2, 2, 0, 0, 0, 0, 0, 2, // 2x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, // 3x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 4x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, // 5x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 6x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, // 7x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 8x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 9x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // ax + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // bx + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // cx + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // dx + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // ex + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 // fx +}; + +//------------------------------------------------------------------------ + +PSTokenizer::PSTokenizer(int (*getCharFuncA)(void *), void *dataA) { + getCharFunc = getCharFuncA; + data = dataA; + charBuf = -1; +} + +PSTokenizer::~PSTokenizer() { +} + +GBool PSTokenizer::getToken(char *buf, int size, int *length) { + GBool comment, backslash; + int c; + int i; + + // skip whitespace and comments + comment = gFalse; + while (1) { + if ((c = getChar()) == EOF) { + buf[0] = '\0'; + *length = 0; + return gFalse; + } + if (comment) { + if (c == '\x0a' || c == '\x0d') { + comment = gFalse; + } + } else if (c == '%') { + comment = gTrue; + } else if (specialChars[c] != 1) { + break; + } + } + + // read a token + i = 0; + buf[i++] = c; + if (c == '(') { + backslash = gFalse; + while ((c = lookChar()) != EOF) { + if (i < size - 1) { + buf[i++] = c; + } + getChar(); + if (c == '\\') { + backslash = gTrue; + } else if (!backslash && c == ')') { + break; + } else { + backslash = gFalse; + } + } + } else if (c == '<') { + while ((c = lookChar()) != EOF) { + getChar(); + if (i < size - 1) { + buf[i++] = c; + } + if (c == '>') { + break; + } + } + } else if (c != '[' && c != ']') { + while ((c = lookChar()) != EOF && !specialChars[c]) { + getChar(); + if (i < size - 1) { + buf[i++] = c; + } + } + } + buf[i] = '\0'; + *length = i; + + return gTrue; +} + +int PSTokenizer::lookChar() { + if (charBuf < 0) { + charBuf = (*getCharFunc)(data); + } + return charBuf; +} + +int PSTokenizer::getChar() { + int c; + + if (charBuf < 0) { + charBuf = (*getCharFunc)(data); + } + c = charBuf; + charBuf = -1; + return c; +} |