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Diffstat (limited to 'Build/source/libs/poppler/poppler-0.28.0/fofi/FoFiBase.cc')
-rw-r--r-- | Build/source/libs/poppler/poppler-0.28.0/fofi/FoFiBase.cc | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/Build/source/libs/poppler/poppler-0.28.0/fofi/FoFiBase.cc b/Build/source/libs/poppler/poppler-0.28.0/fofi/FoFiBase.cc new file mode 100644 index 00000000000..86bafd80208 --- /dev/null +++ b/Build/source/libs/poppler/poppler-0.28.0/fofi/FoFiBase.cc @@ -0,0 +1,201 @@ +//======================================================================== +// +// FoFiBase.cc +// +// Copyright 1999-2003 Glyph & Cog, LLC +// +//======================================================================== + +//======================================================================== +// +// Modified under the Poppler project - http://poppler.freedesktop.org +// +// All changes made under the Poppler project to this file are licensed +// under GPL version 2 or later +// +// Copyright (C) 2008 Ed Avis <eda@waniasset.com> +// Copyright (C) 2011 Jim Meyering <jim@meyering.net> +// +// To see a description of the changes please see the Changelog file that +// came with your tarball or type make ChangeLog if you are building from git +// +//======================================================================== + +#include <config.h> + +#ifdef USE_GCC_PRAGMAS +#pragma implementation +#endif + +#include <stdio.h> +#include <limits.h> +#include "goo/gmem.h" +#include "poppler/Error.h" +#include "FoFiBase.h" + +//------------------------------------------------------------------------ +// FoFiBase +//------------------------------------------------------------------------ + +FoFiBase::FoFiBase(char *fileA, int lenA, GBool freeFileDataA) { + fileData = file = (Guchar *)fileA; + len = lenA; + freeFileData = freeFileDataA; +} + +FoFiBase::~FoFiBase() { + if (freeFileData) { + gfree(fileData); + } +} + +char *FoFiBase::readFile(char *fileName, int *fileLen) { + FILE *f; + char *buf; + int n; + + if (!(f = fopen(fileName, "rb"))) { + error(errIO, -1, "Cannot open '{0:s}'", fileName); + return NULL; + } + if (fseek(f, 0, SEEK_END) != 0) { + error(errIO, -1, "Cannot seek to end of '{0:s}'", fileName); + fclose(f); + return NULL; + } + n = (int)ftell(f); + if (n < 0) { + error(errIO, -1, "Cannot determine length of '{0:s}'", fileName); + fclose(f); + return NULL; + } + if (fseek(f, 0, SEEK_SET) != 0) { + error(errIO, -1, "Cannot seek to start of '{0:s}'", fileName); + fclose(f); + return NULL; + } + buf = (char *)gmalloc(n); + if ((int)fread(buf, 1, n, f) != n) { + gfree(buf); + fclose(f); + return NULL; + } + fclose(f); + *fileLen = n; + return buf; +} + +int FoFiBase::getS8(int pos, GBool *ok) { + int x; + + if (pos < 0 || pos >= len) { + *ok = gFalse; + return 0; + } + x = file[pos]; + if (x & 0x80) { + x |= ~0xff; + } + return x; +} + +int FoFiBase::getU8(int pos, GBool *ok) { + if (pos < 0 || pos >= len) { + *ok = gFalse; + return 0; + } + return file[pos]; +} + +int FoFiBase::getS16BE(int pos, GBool *ok) { + int x; + + if (pos < 0 || pos+1 >= len || pos > INT_MAX - 1) { + *ok = gFalse; + return 0; + } + x = file[pos]; + x = (x << 8) + file[pos+1]; + if (x & 0x8000) { + x |= ~0xffff; + } + return x; +} + +int FoFiBase::getU16BE(int pos, GBool *ok) { + int x; + + if (pos < 0 || pos+1 >= len || pos > INT_MAX - 1) { + *ok = gFalse; + return 0; + } + x = file[pos]; + x = (x << 8) + file[pos+1]; + return x; +} + +int FoFiBase::getS32BE(int pos, GBool *ok) { + int x; + + if (pos < 0 || pos+3 >= len || pos > INT_MAX - 3) { + *ok = gFalse; + return 0; + } + x = file[pos]; + x = (x << 8) + file[pos+1]; + x = (x << 8) + file[pos+2]; + x = (x << 8) + file[pos+3]; + if (x & 0x80000000) { + x |= ~0xffffffff; + } + return x; +} + +Guint FoFiBase::getU32BE(int pos, GBool *ok) { + Guint x; + + if (pos < 0 || pos+3 >= len || pos > INT_MAX - 3) { + *ok = gFalse; + return 0; + } + x = file[pos]; + x = (x << 8) + file[pos+1]; + x = (x << 8) + file[pos+2]; + x = (x << 8) + file[pos+3]; + return x; +} + +Guint FoFiBase::getU32LE(int pos, GBool *ok) { + Guint x; + + if (pos < 0 || pos+3 >= len || pos > INT_MAX - 3) { + *ok = gFalse; + return 0; + } + x = file[pos+3]; + x = (x << 8) + file[pos+2]; + x = (x << 8) + file[pos+1]; + x = (x << 8) + file[pos]; + return x; +} + +Guint FoFiBase::getUVarBE(int pos, int size, GBool *ok) { + Guint x; + int i; + + if (pos < 0 || pos + size > len || pos > INT_MAX - size) { + *ok = gFalse; + return 0; + } + x = 0; + for (i = 0; i < size; ++i) { + x = (x << 8) + file[pos + i]; + } + return x; +} + +GBool FoFiBase::checkRegion(int pos, int size) { + return pos >= 0 && + pos + size >= pos && + pos + size <= len; +} |