xpdf-no-select-disableHEADmaster

1 files changed, 183 insertions, 0 deletions

diff --git a/xpdf/UTF8.cc b/xpdf/UTF8.cc
new file mode 100644
index 0000000..9ee0142
--- /dev/null
+++ b/xpdf/UTF8.cc
@@ -0,0 +1,183 @@
+//========================================================================
+//
+// UTF8.cc
+//
+// Copyright 2001-2017 Glyph & Cog, LLC
+//
+//========================================================================
+
+#include <aconf.h>
+#include "UTF8.h"
+
+int mapUTF8(Unicode u, char *buf, int bufSize) {
+  if        (u <= 0x0000007f) {
+    if (bufSize < 1) {
+      return 0;
+    }
+    buf[0] = (char)u;
+    return 1;
+  } else if (u <= 0x000007ff) {
+    if (bufSize < 2) {
+      return 0;
+    }
+    buf[0] = (char)(0xc0 + (u >> 6));
+    buf[1] = (char)(0x80 + (u & 0x3f));
+    return 2;
+  } else if (u <= 0x0000ffff) {
+    if (bufSize < 3) {
+      return 0;
+    }
+    buf[0] = (char)(0xe0 + (u >> 12));
+    buf[1] = (char)(0x80 + ((u >> 6) & 0x3f));
+    buf[2] = (char)(0x80 + (u & 0x3f));
+    return 3;
+  } else if (u <= 0x0010ffff) {
+    if (bufSize < 4) {
+      return 0;
+    }
+    buf[0] = (char)(0xf0 + (u >> 18));
+    buf[1] = (char)(0x80 + ((u >> 12) & 0x3f));
+    buf[2] = (char)(0x80 + ((u >> 6) & 0x3f));
+    buf[3] = (char)(0x80 + (u & 0x3f));
+    return 4;
+  } else {
+    return 0;
+  }
+}
+
+int mapUCS2(Unicode u, char *buf, int bufSize) {
+  if (u <= 0xffff) {
+    if (bufSize < 2) {
+      return 0;
+    }
+    buf[0] = (char)((u >> 8) & 0xff);
+    buf[1] = (char)(u & 0xff);
+    return 2;
+  } else {
+    return 0;
+  }
+}
+
+GBool getUTF8(GString *s, int *i, Unicode *u) {
+  Guchar c0, c1, c2, c3, c4, c5;
+
+  if (*i >= s->getLength()) {
+    return gFalse;
+  }
+  c0 = (Guchar)s->getChar((*i)++);
+  if (c0 < 0x80) {
+    *u = (Unicode)c0;
+  } else if (c0 < 0xe0) {
+    if (*i < s->getLength() &&
+	((c1 = (Guchar)s->getChar(*i)) & 0xc0) == 0x80) {
+      *i += 1;
+      *u = (Unicode)(((c0 & 0x1f) << 6) |
+		     (c1 & 0x3f));
+    } else {
+      *u =  (Unicode)c0;
+    }
+  } else if (c0 < 0xf0) {
+    if (*i < s->getLength() - 1 &&
+	((c1 = (Guchar)s->getChar(*i)) & 0xc0) == 0x80 &&
+	((c2 = (Guchar)s->getChar(*i + 1)) & 0xc0) == 0x80) {
+      *i += 2;
+      *u = (Unicode)(((c0 & 0x0f) << 12) |
+		     ((c1 & 0x3f) << 6) |
+		     (c2 & 0x3f));
+    } else {
+      *u = (Unicode)c0;
+    }
+  } else if (c0 < 0xf8) {
+    if (*i < s->getLength() - 2 &&
+	((c1 = (Guchar)s->getChar(*i)) & 0xc0) == 0x80 &&
+	((c2 = (Guchar)s->getChar(*i + 1)) & 0xc0) == 0x80 &&
+	((c3 = (Guchar)s->getChar(*i + 2)) & 0xc0) == 0x80) {
+      *i += 3;
+      *u = (Unicode)(((c0 & 0x07) << 18) |
+		     ((c1 & 0x3f) << 12) |
+		     ((c2 & 0x3f) << 6) |
+		     (c3 & 0x3f));
+    } else {
+      *u = (Unicode)c0;
+    }
+  } else if (c0 < 0xfc) {
+    if (*i < s->getLength() - 3 &&
+	((c1 = (Guchar)s->getChar(*i)) & 0xc0) == 0x80 &&
+	((c2 = (Guchar)s->getChar(*i + 1)) & 0xc0) == 0x80 &&
+	((c3 = (Guchar)s->getChar(*i + 2)) & 0xc0) == 0x80 &&
+	((c4 = (Guchar)s->getChar(*i + 3)) & 0xc0) == 0x80) {
+      *i += 4;
+      *u = (Unicode)(((c0 & 0x03) << 24) |
+		     ((c1 & 0x3f) << 18) |
+		     ((c2 & 0x3f) << 12) |
+		     ((c3 & 0x3f) << 6) |
+		     (c4 & 0x3f));
+    } else {
+      *u = (Unicode)c0;
+    }
+  } else if (c0 < 0xfe) {
+    if (*i < s->getLength() - 4 &&
+	((c1 = (Guchar)s->getChar(*i)) & 0xc0) == 0x80 &&
+	((c2 = (Guchar)s->getChar(*i + 1)) & 0xc0) == 0x80 &&
+	((c3 = (Guchar)s->getChar(*i + 2)) & 0xc0) == 0x80 &&
+	((c4 = (Guchar)s->getChar(*i + 3)) & 0xc0) == 0x80 &&
+	((c5 = (Guchar)s->getChar(*i + 4)) & 0xc0) == 0x80) {
+      *i += 5;
+      *u = (Unicode)(((c0 & 0x01) << 30) |
+		     ((c1 & 0x3f) << 24) |
+		     ((c2 & 0x3f) << 18) |
+		     ((c3 & 0x3f) << 12) |
+		     ((c4 & 0x3f) << 6) |
+		     (c5 & 0x3f));
+    } else {
+      *u = (Unicode)c0;
+    }
+  } else {
+    *u = (Unicode)c0;
+  }
+  return gTrue;
+}
+
+GBool getUTF16BE(GString *s, int *i, Unicode *u) {
+  int w0, w1;
+
+  if (*i >= s->getLength() - 1) {
+    return gFalse;
+  }
+  w0 = ((s->getChar(*i) & 0xff) << 8) | (s->getChar(*i + 1) & 0xff);
+  *i += 2;
+  if (w0 < 0xd800 || w0 >= 0xe000) {
+    *u = (Unicode)w0;
+  } else {
+    if (*i < s->getLength() - 1) {
+      w1 = ((s->getChar(*i) & 0xff) << 8) | (s->getChar(*i + 1) & 0xff);
+      *i += 2;
+      *u = 0x10000 + ((w0 - 0xd800) << 10) + (w1 - 0xdc00);
+    } else {
+      *u = (Unicode)w0;
+    }
+  }
+  return gTrue;
+}
+
+GBool getUTF16LE(GString *s, int *i, Unicode *u) {
+  int w0, w1;
+
+  if (*i >= s->getLength() - 1) {
+    return gFalse;
+  }
+  w0 = (s->getChar(*i) & 0xff) | ((s->getChar(*i + 1) & 0xff) << 8);
+  *i += 2;
+  if (w0 < 0xd800 || w0 >= 0xe000) {
+    *u = (Unicode)w0;
+  } else {
+    if (*i < s->getLength() - 1) {
+      w1 = (s->getChar(*i) & 0xff) | ((s->getChar(*i + 1) & 0xff) << 8);
+      *i += 2;
+      *u = 0x10000 + ((w0 - 0xd800) << 10) + (w1 - 0xdc00);
+    } else {
+      *u = (Unicode)w0;
+    }
+  }
+  return gTrue;
+}