//========================================================================

//

// TextString.h

//

// Copyright 2011-2013 Glyph & Cog, LLC

//

// Represents a PDF "text string", which can either be a UTF-16BE

// string (with a leading byte order marker), or an 8-bit string in

// PDFDocEncoding.

//

//========================================================================

#ifndef TEXTSTRING_H

#define TEXTSTRING_H

#include <aconf.h>

#include "CharTypes.h"

class GString;

//------------------------------------------------------------------------

class TextString {

public:

  // Create an empty TextString.

  TextString();

  // Create a TextString from a PDF text string.

  TextString(GString *s);

  // Copy a TextString.

  TextString(TextString *s);

  ~TextString();

  // Append a Unicode character or PDF text string to this TextString.

  TextString *append(Unicode c);

  TextString *append(GString *s);

  // Insert a Unicode character, sequence of Unicode characters, or

  // PDF text string in this TextString.

  TextString *insert(int idx, Unicode c);

  TextString *insert(int idx, Unicode *u2, int n);

  TextString *insert(int idx, GString *s);

  // Get the Unicode characters in the TextString.

  int getLength() { return len; }

  Unicode *getUnicode() { return u; }

  // Create a PDF text string from a TextString.

  GString *toPDFTextString();

  // Convert a TextString to UTF-8.

  GString *toUTF8();

private:

  void expand(int delta);

  Unicode *u;     // NB: not null-terminated

  int len;

  int size;

};

#endif