file(s) added by xpdf 1.01.

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

diff --git a/pdf2swf/xpdf/NameToCharCode.cc b/pdf2swf/xpdf/NameToCharCode.cc
new file mode 100644 (file)
index 0000000..b9cde77
--- /dev/null
+++ b/pdf2swf/xpdf/NameToCharCode.cc
@@ -0,0 +1,115 @@
+//========================================================================
+//
+// NameToCharCode.cc
+//
+// Copyright 2001-2002 Glyph & Cog, LLC
+//
+//========================================================================
+
+#ifdef __GNUC__
+#pragma implementation
+#endif
+
+#include <aconf.h>
+#include <string.h>
+#include "gmem.h"
+#include "NameToCharCode.h"
+
+//------------------------------------------------------------------------
+
+struct NameToCharCodeEntry {
+  char *name;
+  CharCode c;
+};
+
+//------------------------------------------------------------------------
+
+NameToCharCode::NameToCharCode() {
+  int i;
+
+  size = 31;
+  len = 0;
+  tab = (NameToCharCodeEntry *)gmalloc(size * sizeof(NameToCharCodeEntry));
+  for (i = 0; i < size; ++i) {
+    tab[i].name = NULL;
+  }
+}
+
+NameToCharCode::~NameToCharCode() {
+  int i;
+
+  for (i = 0; i < size; ++i) {
+    if (tab[i].name) {
+      gfree(tab[i].name);
+    }
+  }
+  gfree(tab);
+}
+
+void NameToCharCode::add(char *name, CharCode c) {
+  NameToCharCodeEntry *oldTab;
+  int h, i, oldSize;
+
+  // expand the table if necessary
+  if (len >= size / 2) {
+    oldSize = size;
+    oldTab = tab;
+    size = 2*size + 1;
+    tab = (NameToCharCodeEntry *)gmalloc(size * sizeof(NameToCharCodeEntry));
+    for (h = 0; h < size; ++h) {
+      tab[h].name = NULL;
+    }
+    for (i = 0; i < oldSize; ++i) {
+      if (oldTab[i].name) {
+       h = hash(oldTab[i].name);
+       while (tab[h].name) {
+         if (++h == size) {
+           h = 0;
+         }
+       }
+       tab[h] = oldTab[i];
+      }
+    }
+    gfree(oldTab);
+  }
+
+  // add the new name
+  h = hash(name);
+  while (tab[h].name && strcmp(tab[h].name, name)) {
+    if (++h == size) {
+      h = 0;
+    }
+  }
+  if (!tab[h].name) {
+    tab[h].name = copyString(name);
+  }
+  tab[h].c = c;
+
+  ++len;
+}
+
+CharCode NameToCharCode::lookup(char *name) {
+  int h;
+
+  h = hash(name);
+  while (tab[h].name) {
+    if (!strcmp(tab[h].name, name)) {
+      return tab[h].c;
+    }
+    if (++h == size) {
+      h = 0;
+    }
+  }
+  return 0;
+}
+
+int NameToCharCode::hash(char *name) {
+  char *p;
+  unsigned int h;
+
+  h = 0;
+  for (p = name; *p; ++p) {
+    h = 17 * h + (int)(*p & 0xff);
+  }
+  return (int)(h % size);
+}