UTF16UTF8 Class Reference

#include <utf16utf8.h>

Inheritance diagram for UTF16UTF8:

Collaboration diagram for UTF16UTF8:

Public Member Functions
virtual const char *	getHeader () const
virtual char	processText (SWBuf &text, const SWKey *key=0, const SWModule *module=0)
	UTF16UTF8 ()

Detailed Description

This filter converts UTF-16 encoded text to UTF-8

Definition at line 33 of file utf16utf8.h.

Constructor & Destructor Documentation

SWORD_NAMESPACE_START UTF16UTF8::UTF16UTF8

(

)

Definition at line 31 of file utf16utf8.cpp.

                     {
}

Member Function Documentation

virtual const char* SWFilter::getHeader ( ) const

inlinevirtualinherited

This method can supply a header associated with the processing done with this filter. A typical example is a suggested CSS style block for classed containers.

Reimplemented in OSISLaTeX, OSISXHTML, ThMLLaTeX, ThMLXHTML, TEIXHTML, GBFLaTeX, and GBFXHTML.

Definition at line 62 of file swfilter.h.

{ return ""; }

char UTF16UTF8::processText ( SWBuf &  text, const SWKey *  key = 0, const SWModule *  module = 0  )

virtual

This method processes and appropriately modifies the text given it for a particular filter task

Parameters

text	The text to be filtered/converted
key	Current key That was used.
module	Current module.

Returns

0

Implements SWFilter.

Definition at line 35 of file utf16utf8.cpp.

{
  unsigned short *from;

  int len;
  unsigned long uchar;
  unsigned short schar;
  len = 0;
  from = (unsigned short*) text.c_str();
  while (*from) {
        len += 2;
        from++;
  }

    SWBuf orig = text;
    from = (unsigned short*)orig.c_str();


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

  for (text = ""; *from; from++) {
    uchar = 0;

    if (*from < 0xD800 || *from > 0xDFFF) {
      uchar = *from;
    }
    else if (*from >= 0xD800 && *from <= 0xDBFF) {
      uchar = *from;
      schar = *(from+1);
      if (uchar < 0xDC00 || uchar > 0xDFFF) {
    //error, do nothing
    continue;
      }
      uchar &= 0x03ff;
      schar &= 0x03ff;
      uchar <<= 10;
      uchar |= schar;
      uchar += 0x10000;
      from++;
    }
    else {
      //error, do nothing
      continue;
    }
    
    if (uchar < 0x80) { 
      text += uchar;
    }
    else if (uchar < 0x800) { 
      text += 0xc0 | (uchar >> 6); 
      text += 0x80 | (uchar & 0x3f);
    }
    else if (uchar < 0x10000) {
      text += 0xe0 | (uchar >> 12);
      text += 0x80 | ((uchar >> 6) & 0x3f);
      text += 0x80 | (uchar & 0x3f);
    }
    else if (uchar < 0x200000) {
      text += 0xF0 | (uchar >> 18);
      text += 0x80 | ((uchar >> 12) & 0x3F);
      text += 0x80 | ((uchar >> 6) & 0x3F);
      text += 0x80 | (uchar & 0x3F);
    }
  }
  
  return 0;
}

---

The documentation for this class was generated from the following files:

• include/utf16utf8.h
• src/modules/filters/utf16utf8.cpp