moved ../../pdf2swf/xpdf to .

[swftools.git] / lib / xpdf / FoFiBase.cc

diff --git a/lib/xpdf/FoFiBase.cc b/lib/xpdf/FoFiBase.cc
new file mode 100644 (file)
index 0000000..28d0b8c
--- /dev/null
+++ b/lib/xpdf/FoFiBase.cc
@@ -0,0 +1,156 @@
+//========================================================================
+//
+// FoFiBase.cc
+//
+// Copyright 1999-2003 Glyph & Cog, LLC
+//
+//========================================================================
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma implementation
+#endif
+
+#include <stdio.h>
+#include "gmem.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"))) {
+    return NULL;
+  }
+  fseek(f, 0, SEEK_END);
+  n = (int)ftell(f);
+  fseek(f, 0, SEEK_SET);
+  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) {
+    *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) {
+    *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) {
+    *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) {
+    *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::getUVarBE(int pos, int size, GBool *ok) {
+  Guint x;
+  int i;
+
+  if (pos < 0 || pos + size > len) {
+    *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;
+}