1 files changed, 74 insertions, 0 deletions

diff --git a/noncore/unsupported/qpdf/xpdf/Lexer.h b/noncore/unsupported/qpdf/xpdf/Lexer.h
new file mode 100644
index 0000000..5edbeda
--- a/dev/null
+++ b/noncore/unsupported/qpdf/xpdf/Lexer.h
@@ -0,0 +1,74 @@
+//========================================================================
+//
+// Lexer.h
+//
+// Copyright 1996 Derek B. Noonburg
+//
+//========================================================================
+
+#ifndef LEXER_H
+#define LEXER_H
+
+#ifdef __GNUC__
+#pragma interface
+#endif
+
+#include "Object.h"
+#include "Stream.h"
+
+class XRef;
+
+        #define tokBufSize 128  // size of token buffer
+
+//------------------------------------------------------------------------
+// Lexer
+//------------------------------------------------------------------------
+
+class Lexer {
+public:
+
+  // Construct a lexer for a single stream.  Deletes the stream when
+  // lexer is deleted.
+  Lexer(XRef *xref, Stream *str);
+
+  // Construct a lexer for a stream or array of streams (assumes obj
+  // is either a stream or array of streams).
+  Lexer(XRef *xref, Object *obj);
+
+  // Destructor.
+  ~Lexer();
+
+  // Get the next object from the input stream.
+  Object *getObj(Object *obj);
+
+  // Skip to the beginning of the next line in the input stream.
+  void skipToNextLine();
+
+  // Skip over one character.
+  void skipChar() { getChar(); }
+
+  // Get stream.
+  Stream *getStream()
+    { return curStr.isNone() ? (Stream *)NULL : curStr.getStream(); }
+
+  // Get current position in file.
+  int getPos()
+    { return curStr.isNone() ? -1 : curStr.streamGetPos(); }
+
+  // Set position in file.
+  void setPos(int pos)
+    { if (!curStr.isNone()) curStr.streamSetPos(pos); }
+
+private:
+
+  int getChar();
+  int lookChar();
+
+          Array *streams;       // array of input streams
+          int strPtr;           // index of current stream
+          Object curStr;        // current stream
+          GBool freeArray;      // should lexer free the streams array?
+          char tokBuf[tokBufSize];// temporary token buffer
+};
+
+#endif