file(s) added by xpdf 1.01.

[swftools.git] / pdf2swf / xpdf / PSTokenizer.cc

diff --git a/pdf2swf/xpdf/PSTokenizer.cc b/pdf2swf/xpdf/PSTokenizer.cc
new file mode 100644 (file)
index 0000000..8d654bd
--- /dev/null
+++ b/pdf2swf/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;
+}