/****************************************************************************
Copyright (c) 2010-2011 cocos2d-x.org
Copyright (c) 2008-2010 Ricardo Quesada
Copyright (c) 2011      Zynga Inc.

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

Use any of these editors to generate BMFonts:
http://glyphdesigner.71squared.com/ (Commercial, Mac OS X)
http://www.n4te.com/hiero/hiero.jnlp (Free, Java)
http://slick.cokeandcode.com/demos/hiero.jnlp (Free, Java)
http://www.angelcode.com/products/bmfont/ (Free, Windows only)

****************************************************************************/
#include "CCLabelBMFont.h"
#include "cocoa/CCString.h"
#include "platform/platform.h"
#include "cocoa/CCDictionary.h"
#include "CCConfiguration.h"
#include "CCDrawingPrimitives.h"
#include "sprite_nodes/CCSprite.h"
#include "support/CCPointExtension.h"
#include "platform/CCFileUtils.h"
#include "support/data_support/uthash.h"
#include "CCDirector.h"
#include "textures/CCTextureCache.h"

using namespace std;


NS_CC_BEGIN

typedef struct _FontDefHashElement
{
    unsigned int    key;        // key. Font Unicode value
    ccBMFontDef        fontDef;    // font definition
    UT_hash_handle    hh;
} tFontDefHashElement;

static int cc_wcslen(const unsigned short* str)
{
    int i=0;
    while(*str++) i++;
    return i;
}

/* Code from GLIB gutf8.c starts here. */

#define UTF8_COMPUTE(Char, Mask, Len)        \
  if (Char < 128)                \
    {                        \
      Len = 1;                    \
      Mask = 0x7f;                \
    }                        \
  else if ((Char & 0xe0) == 0xc0)        \
    {                        \
      Len = 2;                    \
      Mask = 0x1f;                \
    }                        \
  else if ((Char & 0xf0) == 0xe0)        \
    {                        \
      Len = 3;                    \
      Mask = 0x0f;                \
    }                        \
  else if ((Char & 0xf8) == 0xf0)        \
    {                        \
      Len = 4;                    \
      Mask = 0x07;                \
    }                        \
  else if ((Char & 0xfc) == 0xf8)        \
    {                        \
      Len = 5;                    \
      Mask = 0x03;                \
    }                        \
  else if ((Char & 0xfe) == 0xfc)        \
    {                        \
      Len = 6;                    \
      Mask = 0x01;                \
    }                        \
  else                        \
    Len = -1;

#define UTF8_LENGTH(Char)            \
  ((Char) < 0x80 ? 1 :                \
   ((Char) < 0x800 ? 2 :            \
    ((Char) < 0x10000 ? 3 :            \
     ((Char) < 0x200000 ? 4 :            \
      ((Char) < 0x4000000 ? 5 : 6)))))


#define UTF8_GET(Result, Chars, Count, Mask, Len)    \
  (Result) = (Chars)[0] & (Mask);            \
  for ((Count) = 1; (Count) < (Len); ++(Count))        \
    {                            \
      if (((Chars)[(Count)] & 0xc0) != 0x80)        \
    {                        \
      (Result) = -1;                \
      break;                    \
    }                        \
      (Result) <<= 6;                    \
      (Result) |= ((Chars)[(Count)] & 0x3f);        \
    }

#define UNICODE_VALID(Char)            \
  ((Char) < 0x110000 &&                \
   (((Char) & 0xFFFFF800) != 0xD800) &&        \
   ((Char) < 0xFDD0 || (Char) > 0xFDEF) &&    \
   ((Char) & 0xFFFE) != 0xFFFE)


static const char utf8_skip_data[256] = {
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1,
  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  2, 2, 2, 2, 2, 2, 2,
  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5,
  5, 5, 5, 6, 6, 1, 1
};

static const char *const g_utf8_skip = utf8_skip_data;

#define cc_utf8_next_char(p) (char *)((p) + g_utf8_skip[*(unsigned char *)(p)])

/*
 * @str:    the string to search through.
 * @c:        the character to find.
 * 
 * Returns the index of the first occurrence of the character, if found.  Otherwise -1 is returned.
 * 
 * Return value: the index of the first occurrence of the character if found or -1 otherwise.
 * */
static unsigned int cc_utf8_find_char(std::vector<unsigned short> str, unsigned short c)
{
    unsigned int len = str.size();

    for (unsigned int i = 0; i < len; ++i)
        if (str[i] == c) return i;

    return -1;
}

/*
 * @str:    the string to search through.
 * @c:        the character to not look for.
 * 
 * Return value: the index of the last character that is not c.
 * */
static unsigned int cc_utf8_find_last_not_char(std::vector<unsigned short> str, unsigned short c)
{
    int len = str.size();

    int i = len - 1;
    for (; i >= 0; --i)
        if (str[i] != c) return i;

    return i;
}

/*
 * @str:    the string to trim
 * @index:    the index to start trimming from.
 * 
 * Trims str st str=[0, index) after the operation.
 * 
 * Return value: the trimmed string.
 * */
static void cc_utf8_trim_from(std::vector<unsigned short>* str, int index)
{
    int size = str->size();
    if (index >= size || index < 0)
        return;

    str->erase(str->begin() + index, str->begin() + size);
}

/*
 * @ch is the unicode character whitespace?
 * 
 * Reference: http://en.wikipedia.org/wiki/Whitespace_character#Unicode
 * 
 * Return value: weather the character is a whitespace character.
 * */
static bool isspace_unicode(unsigned short ch)
{
    return  (ch >= 0x0009 && ch <= 0x000D) || ch == 0x0020 || ch == 0x0085 || ch == 0x00A0 || ch == 0x1680
        || (ch >= 0x2000 && ch <= 0x200A) || ch == 0x2028 || ch == 0x2029 || ch == 0x202F
        ||  ch == 0x205F || ch == 0x3000;
}

static void cc_utf8_trim_ws(std::vector<unsigned short>* str)
{
    int len = str->size();

    if ( len <= 0 )
        return;

    int last_index = len - 1;

    // Only start trimming if the last character is whitespace..
    if (isspace_unicode((*str)[last_index]))
    {
        for (int i = last_index - 1; i >= 0; --i)
        {
            if (isspace_unicode((*str)[i]))
                last_index = i;
            else
                break;
        }

        cc_utf8_trim_from(str, last_index);
    }
}

/*
 * g_utf8_strlen:
 * @p: pointer to the start of a UTF-8 encoded string.
 * @max: the maximum number of bytes to examine. If @max
 *       is less than 0, then the string is assumed to be
 *       null-terminated. If @max is 0, @p will not be examined and
 *       may be %NULL.
 *
 * Returns the length of the string in characters.
 *
 * Return value: the length of the string in characters
 **/
long
cc_utf8_strlen (const char * p, int max)
{
  long len = 0;
  const char *start = p;

  if (!(p != NULL || max == 0))
  {
      return 0;
  }

  if (max < 0)
    {
      while (*p)
    {
      p = cc_utf8_next_char (p);
      ++len;
    }
    }
  else
    {
      if (max == 0 || !*p)
    return 0;

      p = cc_utf8_next_char (p);

      while (p - start < max && *p)
    {
      ++len;
      p = cc_utf8_next_char (p);
    }

      /* only do the last len increment if we got a complete
       * char (don't count partial chars)
       */
      if (p - start == max)
    ++len;
    }

  return len;
}

/*
 * g_utf8_get_char:
 * @p: a pointer to Unicode character encoded as UTF-8
 *
 * Converts a sequence of bytes encoded as UTF-8 to a Unicode character.
 * If @p does not point to a valid UTF-8 encoded character, results are
 * undefined. If you are not sure that the bytes are complete
 * valid Unicode characters, you should use g_utf8_get_char_validated()
 * instead.
 *
 * Return value: the resulting character
 **/
static unsigned int
cc_utf8_get_char (const char * p)
{
  int i, mask = 0, len;
  unsigned int result;
  unsigned char c = (unsigned char) *p;

  UTF8_COMPUTE (c, mask, len);
  if (len == -1)
    return (unsigned int) - 1;
  UTF8_GET (result, p, i, mask, len);

  return result;
}

/*
 * cc_utf16_from_utf8:
 * @str_old: pointer to the start of a C string.
 * 
 * Creates a utf8 string from a cstring.
 * 
 * Return value: the newly created utf8 string.
 * */
static unsigned short* cc_utf16_from_utf8(const char* str_old)
{
    int len = cc_utf8_strlen(str_old, -1);

    unsigned short* str_new = new unsigned short[len + 1];
    str_new[len] = 0;

    for (int i = 0; i < len; ++i)
    {
        str_new[i] = cc_utf8_get_char(str_old);
        str_old = cc_utf8_next_char(str_old);
    }

    return str_new;
}

static std::vector<unsigned short> cc_utf16_vec_from_utf16_str(const unsigned short* str)
{
    int len = cc_wcslen(str);
    std::vector<unsigned short> str_new;

    for (int i = 0; i < len; ++i)
    {
        str_new.push_back(str[i]);
    }
    return str_new;
}

//
//FNTConfig Cache - free functions
//
static CCDictionary* s_pConfigurations = NULL;

CCBMFontConfiguration* FNTConfigLoadFile( const char *fntFile)
{
    CCBMFontConfiguration* pRet = NULL;

    if( s_pConfigurations == NULL )
    {
        s_pConfigurations = new CCDictionary();
    }

    pRet = (CCBMFontConfiguration*)s_pConfigurations->objectForKey(fntFile);
    if( pRet == NULL )
    {
        pRet = CCBMFontConfiguration::create(fntFile);
        if (pRet)
        {
            s_pConfigurations->setObject(pRet, fntFile);
        }        
    }

    return pRet;
}

void FNTConfigRemoveCache( void )
{
    if (s_pConfigurations)
    {
        s_pConfigurations->removeAllObjects();
        CC_SAFE_RELEASE_NULL(s_pConfigurations);
    }
}

//
//Hash Element
//
// Equal function for targetSet.
typedef struct _KerningHashElement
{    
    int                key;        // key for the hash. 16-bit for 1st element, 16-bit for 2nd element
    int                amount;
    UT_hash_handle    hh;
} tKerningHashElement;
//
//BitmapFontConfiguration
//

CCBMFontConfiguration * CCBMFontConfiguration::configurationWithFNTFile(const char *FNTfile)
{
    return CCBMFontConfiguration::create(FNTfile);
}

CCBMFontConfiguration * CCBMFontConfiguration::create(const char *FNTfile)
{
    CCBMFontConfiguration * pRet = new CCBMFontConfiguration();
    if (pRet->initWithFNTfile(FNTfile))
    {
        pRet->autorelease();
        return pRet;
    }
    CC_SAFE_DELETE(pRet);
    return NULL;
}

bool CCBMFontConfiguration::initWithFNTfile(const char *FNTfile)
{
    m_pKerningDictionary = NULL;
    m_pFontDefDictionary = NULL;
    if (! this->parseConfigFile(FNTfile))
    {
        return false;
    }

    return true;
}

CCBMFontConfiguration::CCBMFontConfiguration()
    : m_pFontDefDictionary(NULL)
    , m_nCommonHeight(0)
    , m_pKerningDictionary(NULL)
{

}

CCBMFontConfiguration::~CCBMFontConfiguration()
{
    CCLOGINFO( "cocos2d: deallocing CCBMFontConfiguration" );
    this->purgeFontDefDictionary();
    this->purgeKerningDictionary();
    m_sAtlasName.clear();
}

const char* CCBMFontConfiguration::description(void)
{
    return CCString::createWithFormat(
        "<CCBMFontConfiguration = %08X | Glphys:%d Kernings:%d | Image = %s>",
        this,
        HASH_COUNT(m_pFontDefDictionary),
        HASH_COUNT(m_pKerningDictionary),
        m_sAtlasName.c_str()
    )->getCString();
}

void CCBMFontConfiguration::purgeKerningDictionary()
{
    tKerningHashElement *current;
    while(m_pKerningDictionary) 
    {
        current = m_pKerningDictionary; 
        HASH_DEL(m_pKerningDictionary,current);
        free(current);
    }
}

void CCBMFontConfiguration::purgeFontDefDictionary()
{    
    tFontDefHashElement *current, *tmp;

    HASH_ITER(hh, m_pFontDefDictionary, current, tmp) {
        HASH_DEL(m_pFontDefDictionary, current);
        free(current);
    }
}


bool CCBMFontConfiguration::parseConfigFile(const char *controlFile)
{    
    std::string fullpath = CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(controlFile);
    CCString *contents = CCString::createWithContentsOfFile(fullpath.c_str());

    CCAssert(contents, "CCBMFontConfiguration::parseConfigFile | Open file error.");

    if (!contents)
    {
        CCLOG("cocos2d: Error parsing FNTfile %s", controlFile);
        return false;
    }

    // parse spacing / padding
    std::string line;
    std::string strLeft = contents->getCString();
    while (strLeft.length() > 0)
    {
        int pos = strLeft.find('\n');

        if (pos != (int)std::string::npos)
        {
            // the data is more than a line.get one line
            line = strLeft.substr(0, pos);
            strLeft = strLeft.substr(pos + 1);
        }
        else
        {
            // get the left data
            line = strLeft;
            strLeft.erase();
        }

        if(line.substr(0,strlen("info face")) == "info face") 
        {
            // XXX: info parsing is incomplete
            // Not needed for the Hiero editors, but needed for the AngelCode editor
            //            [self parseInfoArguments:line];
            this->parseInfoArguments(line);
        }
        // Check to see if the start of the line is something we are interested in
        else if(line.substr(0,strlen("common lineHeight")) == "common lineHeight")
        {
            this->parseCommonArguments(line);
        }
        else if(line.substr(0,strlen("page id")) == "page id")
        {
            this->parseImageFileName(line, controlFile);
        }
        else if(line.substr(0,strlen("chars c")) == "chars c")
        {
            // Ignore this line
        }
        else if(line.substr(0,strlen("char")) == "char")
        {
            // Parse the current line and create a new CharDef
            tFontDefHashElement* element = (tFontDefHashElement*)malloc( sizeof(*element) );
            this->parseCharacterDefinition(line, &element->fontDef);

            element->key = element->fontDef.charID;
            HASH_ADD_INT(m_pFontDefDictionary, key, element);
        }
//        else if(line.substr(0,strlen("kernings count")) == "kernings count")
//        {
//            this->parseKerningCapacity(line);
//        }
        else if(line.substr(0,strlen("kerning first")) == "kerning first")
        {
            this->parseKerningEntry(line);
        }
    }
    
    return true;
}

void CCBMFontConfiguration::parseImageFileName(std::string line, const char *fntFile)
{
    //////////////////////////////////////////////////////////////////////////
    // line to parse:
    // page id=0 file="bitmapFontTest.png"
    //////////////////////////////////////////////////////////////////////////

    // page ID. Sanity check
    int index = line.find('=')+1;
    int index2 = line.find(' ', index);
    std::string value = line.substr(index, index2-index);
    CCAssert(atoi(value.c_str()) == 0, "LabelBMFont file could not be found");
    // file 
    index = line.find('"')+1;
    index2 = line.find('"', index);
    value = line.substr(index, index2-index);

    m_sAtlasName = CCFileUtils::sharedFileUtils()->fullPathFromRelativeFile(value.c_str(), fntFile);
}

void CCBMFontConfiguration::parseInfoArguments(std::string line)
{
    //////////////////////////////////////////////////////////////////////////
    // possible lines to parse:
    // info face="Script" size=32 bold=0 italic=0 charset="" unicode=1 stretchH=100 smooth=1 aa=1 padding=1,4,3,2 spacing=0,0 outline=0
    // info face="Cracked" size=36 bold=0 italic=0 charset="" unicode=0 stretchH=100 smooth=1 aa=1 padding=0,0,0,0 spacing=1,1
    //////////////////////////////////////////////////////////////////////////

    // padding
    int index = line.find("padding=");
    int index2 = line.find(' ', index);
    std::string value = line.substr(index, index2-index);
    sscanf(value.c_str(), "padding=%d,%d,%d,%d", &m_tPadding.top, &m_tPadding.right, &m_tPadding.bottom, &m_tPadding.left);
    CCLOG("cocos2d: padding: %d,%d,%d,%d", m_tPadding.left, m_tPadding.top, m_tPadding.right, m_tPadding.bottom);
}

void CCBMFontConfiguration::parseCommonArguments(std::string line)
{
    //////////////////////////////////////////////////////////////////////////
    // line to parse:
    // common lineHeight=104 base=26 scaleW=1024 scaleH=512 pages=1 packed=0
    //////////////////////////////////////////////////////////////////////////

    // Height
    int index = line.find("lineHeight=");
    int index2 = line.find(' ', index);
    std::string value = line.substr(index, index2-index);
    sscanf(value.c_str(), "lineHeight=%d", &m_nCommonHeight);
    // scaleW. sanity check
    index = line.find("scaleW=") + strlen("scaleW=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    CCAssert(atoi(value.c_str()) <= CCConfiguration::sharedConfiguration()->getMaxTextureSize(), "CCLabelBMFont: page can't be larger than supported");
    // scaleH. sanity check
    index = line.find("scaleH=") + strlen("scaleH=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    CCAssert(atoi(value.c_str()) <= CCConfiguration::sharedConfiguration()->getMaxTextureSize(), "CCLabelBMFont: page can't be larger than supported");
    // pages. sanity check
    index = line.find("pages=") + strlen("pages=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    CCAssert(atoi(value.c_str()) == 1, "CCBitfontAtlas: only supports 1 page");

    // packed (ignore) What does this mean ??
}

void CCBMFontConfiguration::parseCharacterDefinition(std::string line, ccBMFontDef *characterDefinition)
{    
    //////////////////////////////////////////////////////////////////////////
    // line to parse:
    // char id=32   x=0     y=0     width=0     height=0     xoffset=0     yoffset=44    xadvance=14     page=0  chnl=0 
    //////////////////////////////////////////////////////////////////////////

    // Character ID
    int index = line.find("id=");
    int index2 = line.find(' ', index);
    std::string value = line.substr(index, index2-index);
    sscanf(value.c_str(), "id=%u", &characterDefinition->charID);

    // Character x
    index = line.find("x=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    sscanf(value.c_str(), "x=%f", &characterDefinition->rect.origin.x);
    // Character y
    index = line.find("y=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    sscanf(value.c_str(), "y=%f", &characterDefinition->rect.origin.y);
    // Character width
    index = line.find("width=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    sscanf(value.c_str(), "width=%f", &characterDefinition->rect.size.width);
    // Character height
    index = line.find("height=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    sscanf(value.c_str(), "height=%f", &characterDefinition->rect.size.height);
    // Character xoffset
    index = line.find("xoffset=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    sscanf(value.c_str(), "xoffset=%hd", &characterDefinition->xOffset);
    // Character yoffset
    index = line.find("yoffset=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    sscanf(value.c_str(), "yoffset=%hd", &characterDefinition->yOffset);
    // Character xadvance
    index = line.find("xadvance=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    sscanf(value.c_str(), "xadvance=%hd", &characterDefinition->xAdvance);
}

void CCBMFontConfiguration::parseKerningEntry(std::string line)
{        
    //////////////////////////////////////////////////////////////////////////
    // line to parse:
    // kerning first=121  second=44  amount=-7
    //////////////////////////////////////////////////////////////////////////

    // first
    int first;
    int index = line.find("first=");
    int index2 = line.find(' ', index);
    std::string value = line.substr(index, index2-index);
    sscanf(value.c_str(), "first=%d", &first);

    // second
    int second;
    index = line.find("second=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    sscanf(value.c_str(), "second=%d", &second);

    // amount
    int amount;
    index = line.find("amount=");
    index2 = line.find(' ', index);
    value = line.substr(index, index2-index);
    sscanf(value.c_str(), "amount=%d", &amount);

    tKerningHashElement *element = (tKerningHashElement *)calloc( sizeof( *element ), 1 );
    element->amount = amount;
    element->key = (first<<16) | (second&0xffff);
    HASH_ADD_INT(m_pKerningDictionary,key, element);
}
//
//CCLabelBMFont
//

//LabelBMFont - Purge Cache
void CCLabelBMFont::purgeCachedData()
{
    FNTConfigRemoveCache();
}

CCLabelBMFont * CCLabelBMFont::node()
{
    return CCLabelBMFont::create();
}

CCLabelBMFont * CCLabelBMFont::create()
{
    CCLabelBMFont * pRet = new CCLabelBMFont();
    if (pRet && pRet->init())
    {
        pRet->autorelease();
        return pRet;
    }
    CC_SAFE_DELETE(pRet);
    return NULL;
}

CCLabelBMFont *CCLabelBMFont::labelWithString(const char *str, const char *fntFile, float width/* = kCCLabelAutomaticWidth*/, CCTextAlignment alignment/* = kCCTextAlignmentLeft*/, CCPoint imageOffset/* = CCPointZero*/)
{
    return CCLabelBMFont::create(str, fntFile, width, alignment, imageOffset);
}

//LabelBMFont - Creation & Init
CCLabelBMFont *CCLabelBMFont::create(const char *str, const char *fntFile, float width/* = kCCLabelAutomaticWidth*/, CCTextAlignment alignment/* = kCCTextAlignmentLeft*/, CCPoint imageOffset/* = CCPointZero*/)
{
    CCLabelBMFont *pRet = new CCLabelBMFont();
    if(pRet && pRet->initWithString(str, fntFile, width, alignment, imageOffset))
    {
        pRet->autorelease();
        return pRet;
    }
    CC_SAFE_DELETE(pRet);
    return NULL;
}

bool CCLabelBMFont::init()
{
    return initWithString(NULL, NULL, kCCLabelAutomaticWidth, kCCTextAlignmentLeft, CCPointZero);
}

bool CCLabelBMFont::initWithString(const char *theString, const char *fntFile, float width/* = kCCLabelAutomaticWidth*/, CCTextAlignment alignment/* = kCCTextAlignmentLeft*/, CCPoint imageOffset/* = CCPointZero*/)
{
    CCAssert(!m_pConfiguration, "re-init is no longer supported");
    CCAssert( (theString && fntFile) || (theString==NULL && fntFile==NULL), "Invalid params for CCLabelBMFont");
    
    CCTexture2D *texture = NULL;
    
    if (fntFile)
    {
        CCBMFontConfiguration *newConf = FNTConfigLoadFile(fntFile);
        CCAssert(newConf, "CCLabelBMFont: Impossible to create font. Please check file");
        
        newConf->retain();
        CC_SAFE_RELEASE(m_pConfiguration);
        m_pConfiguration = newConf;
        
        m_sFntFile = fntFile;
        
        texture = CCTextureCache::sharedTextureCache()->addImage(m_pConfiguration->getAtlasName());
    }
    else 
    {
        texture = new CCTexture2D();
        texture->autorelease();
    }

    if (theString == NULL)
    {
        theString = "";
    }

    if (CCSpriteBatchNode::initWithTexture(texture, strlen(theString)))
    {
        m_pAlignment = alignment;
        m_tImageOffset = imageOffset;
        m_fWidth = width;
        m_cOpacity = 255;
        m_tColor = ccWHITE;
        m_tContentSize = CCSizeZero;
        m_bIsOpacityModifyRGB = m_pobTextureAtlas->getTexture()->hasPremultipliedAlpha();
        this->setString(theString);
        setAnchorPoint(ccp(0.5f, 0.5f));
        return true;
    }
    return false;
}

CCLabelBMFont::CCLabelBMFont()
: m_cOpacity(0)           
, m_bIsOpacityModifyRGB(false)
, m_pConfiguration(NULL)
, m_sString(NULL)
, m_bLineBreakWithoutSpaces(false)
, m_tImageOffset(CCPointZero)
{

}

CCLabelBMFont::~CCLabelBMFont()
{
    CC_SAFE_DELETE(m_sString);
    CC_SAFE_RELEASE(m_pConfiguration);
}

// LabelBMFont - Atlas generation
int CCLabelBMFont::kerningAmountForFirst(unsigned short first, unsigned short second)
{
    int ret = 0;
    unsigned int key = (first<<16) | (second & 0xffff);

    if( m_pConfiguration->m_pKerningDictionary ) {
        tKerningHashElement *element = NULL;
        HASH_FIND_INT(m_pConfiguration->m_pKerningDictionary, &key, element);        
        if(element)
            ret = element->amount;
    }
    return ret;
}

void CCLabelBMFont::createFontChars()
{
    int nextFontPositionX = 0;
    int nextFontPositionY = 0;
    //unsigned short prev = -1;
    int kerningAmount = 0;

    CCSize tmpSize = CCSizeZero;

    int longestLine = 0;
    unsigned int totalHeight = 0;

    unsigned int quantityOfLines = 1;

    unsigned int stringLen = cc_wcslen(m_sString);
    if (stringLen == 0)
    {
        return;
    }

    for (unsigned int i = 0; i < stringLen - 1; ++i)
    {
        unsigned short c = m_sString[i];
        if (c == '\n')
        {
            quantityOfLines++;
        }
    }

    totalHeight = m_pConfiguration->m_nCommonHeight * quantityOfLines;
    nextFontPositionY = 0-(m_pConfiguration->m_nCommonHeight - m_pConfiguration->m_nCommonHeight * quantityOfLines);

    for (unsigned int i= 0; i < stringLen; i++)
    {
        unsigned short c = m_sString[i];

        if (c == '\n')
        {
            nextFontPositionX = 0;
            nextFontPositionY -= m_pConfiguration->m_nCommonHeight;
            continue;
        }

        tFontDefHashElement *element = NULL;

        // unichar is a short, and an int is needed on HASH_FIND_INT
        unsigned int key = c;
        HASH_FIND_INT(m_pConfiguration->m_pFontDefDictionary, &key, element);
        CCAssert(element, "FontDefinition could not be found!");

        ccBMFontDef fontDef = element->fontDef;

        CCRect rect = fontDef.rect;
        rect = CC_RECT_PIXELS_TO_POINTS(rect);

        rect.origin.x += m_tImageOffset.x;
        rect.origin.y += m_tImageOffset.y;

        CCSprite *fontChar;

        fontChar = (CCSprite*)(this->getChildByTag(i));
        if( ! fontChar )
        {
            fontChar = new CCSprite();
            fontChar->initWithTexture(m_pobTextureAtlas->getTexture(), rect);
            this->addChild(fontChar, 0, i);
            fontChar->release();
        }
        else
        {
            // reusing fonts
            fontChar->setTextureRect(rect, false, rect.size);

            // restore to default in case they were modified
            fontChar->setVisible(true);
            fontChar->setOpacity(255);
        }

        // See issue 1343. cast( signed short + unsigned integer ) == unsigned integer (sign is lost!)
        int yOffset = m_pConfiguration->m_nCommonHeight - fontDef.yOffset;
        CCPoint fontPos = ccp( (float)nextFontPositionX + fontDef.xOffset + fontDef.rect.size.width*0.5f + kerningAmount,
            (float)nextFontPositionY + yOffset - rect.size.height*0.5f * CC_CONTENT_SCALE_FACTOR() );
        fontChar->setPosition(CC_POINT_PIXELS_TO_POINTS(fontPos));

        // update kerning
        nextFontPositionX += fontDef.xAdvance + kerningAmount;
        //prev = c;

        // Apply label properties
        fontChar->setOpacityModifyRGB(m_bIsOpacityModifyRGB);
        // Color MUST be set before opacity, since opacity might change color if OpacityModifyRGB is on
        fontChar->setColor(m_tColor);

        // only apply opaccity if it is different than 255 )
        // to prevent modifying the color too (issue #610)
        if( m_cOpacity != 255 )
        {
            fontChar->setOpacity(m_cOpacity);
        }

        if (longestLine < nextFontPositionX)
        {
            longestLine = nextFontPositionX;
        }
    }

    tmpSize.width  = (float) longestLine;
    tmpSize.height = (float) totalHeight;

    this->setContentSize(CC_SIZE_PIXELS_TO_POINTS(tmpSize));
    
}

//LabelBMFont - CCLabelProtocol protocol
void CCLabelBMFont::setString(const char *newString)
{
    this->setString(newString, false);
}

void CCLabelBMFont::setString(const char *newString, bool fromUpdate)
{
    CC_SAFE_DELETE_ARRAY(m_sString);
    m_sString = cc_utf16_from_utf8(newString);
    m_sInitialString = newString;

    updateString(fromUpdate);
}

void CCLabelBMFont::updateString(bool fromUpdate)
{
    if (m_pChildren && m_pChildren->count() != 0)
    {
        CCObject* child;
        CCARRAY_FOREACH(m_pChildren, child)
        {
            CCNode* pNode = (CCNode*) child;
            if (pNode)
            {
                pNode->setVisible(false);
            }
        }
    }
    this->createFontChars();

    if (!fromUpdate)
        updateLabel();
}

const char* CCLabelBMFont::getString(void)
{
    return m_sInitialString.c_str();
}

void CCLabelBMFont::setCString(const char *label)
{
    setString(label);
}

//LabelBMFont - CCRGBAProtocol protocol
void CCLabelBMFont::setColor(const ccColor3B& var)
{
    m_tColor = var;
    if (m_pChildren && m_pChildren->count() != 0)
    {
        CCObject* child;
        CCARRAY_FOREACH(m_pChildren, child)
        {
            CCSprite* pNode = (CCSprite*) child;
            if (pNode)
            {
                pNode->setColor(m_tColor);
            }
        }
    }
}
const ccColor3B& CCLabelBMFont::getColor()
{
    return m_tColor;
}
void CCLabelBMFont::setOpacity(GLubyte var)
{
    m_cOpacity = var;

    if (m_pChildren && m_pChildren->count() != 0)
    {
        CCObject* child;
        CCARRAY_FOREACH(m_pChildren, child)
        {
            CCNode* pNode = (CCNode*) child;
            if (pNode)
            {
                CCRGBAProtocol *pRGBAProtocol = dynamic_cast<CCRGBAProtocol*>(pNode);
                if (pRGBAProtocol)
                {
                    pRGBAProtocol->setOpacity(m_cOpacity);
                }
            }
        }
    }
}
GLubyte CCLabelBMFont::getOpacity()
{
    return m_cOpacity;
}
void CCLabelBMFont::setOpacityModifyRGB(bool var)
{
    m_bIsOpacityModifyRGB = var;
    if (m_pChildren && m_pChildren->count() != 0)
    {
        CCObject* child;
        CCARRAY_FOREACH(m_pChildren, child)
        {
            CCNode* pNode = (CCNode*) child;
            if (pNode)
            {
                CCRGBAProtocol *pRGBAProtocol = dynamic_cast<CCRGBAProtocol*>(pNode);
                if (pRGBAProtocol)
                {
                    pRGBAProtocol->setOpacityModifyRGB(m_bIsOpacityModifyRGB);
                }
            }
        }
    }
}
bool CCLabelBMFont::isOpacityModifyRGB()
{
    return m_bIsOpacityModifyRGB;
}

// LabelBMFont - AnchorPoint
void CCLabelBMFont::setAnchorPoint(const CCPoint& point)
{
    if( ! point.equals(m_tAnchorPoint))
    {
        CCSpriteBatchNode::setAnchorPoint(point);
        updateLabel();
    }
}

// LabelBMFont - Alignment
void CCLabelBMFont::updateLabel()
{
    this->setString(m_sInitialString.c_str(), true);

    if (m_fWidth > 0)
    {
        // Step 1: Make multiline
        vector<unsigned short> str_whole = cc_utf16_vec_from_utf16_str(m_sString);
        unsigned int stringLength = str_whole.size();
        vector<unsigned short> multiline_string;
        multiline_string.reserve( stringLength );
        vector<unsigned short> last_word;
        last_word.reserve( stringLength );

        unsigned int line = 1, i = 0;
        bool start_line = false, start_word = false;
        float startOfLine = -1, startOfWord = -1;
        int skip = 0;

        CCArray* children = getChildren();
        for (unsigned int j = 0; j < children->count(); j++)
        {
            CCSprite* characterSprite;

            while (!(characterSprite = (CCSprite*)this->getChildByTag(j + skip)))
                skip++;

            if (!characterSprite->isVisible()) continue;

            if (i >= stringLength)
                break;

            unsigned short character = str_whole[i];

            if (!start_word)
            {
                startOfWord = getLetterPosXLeft( characterSprite );
                start_word = true;
            }
            if (!start_line)
            {
                startOfLine = startOfWord;
                start_line = true;
            }

            // Newline.
            if (character == '\n')
            {
                cc_utf8_trim_ws(&last_word);

                last_word.push_back('\n');
                multiline_string.insert(multiline_string.end(), last_word.begin(), last_word.end());
                last_word.clear();
                start_word = false;
                start_line = false;
                startOfWord = -1;
                startOfLine = -1;
                i++;
                line++;

                if (i >= stringLength)
                    break;

                character = str_whole[i];

                if (!startOfWord)
                {
                    startOfWord = getLetterPosXLeft( characterSprite );
                    start_word = true;
                }
                if (!startOfLine)
                {
                    startOfLine  = startOfWord;
                    start_line = true;
                }
            }

            // Whitespace.
            if (isspace_unicode(character))
            {
                last_word.push_back(character);
                multiline_string.insert(multiline_string.end(), last_word.begin(), last_word.end());
                last_word.clear();
                start_word = false;
                startOfWord = -1;
                i++;
                continue;
            }

            // Out of bounds.
            if ( getLetterPosXRight( characterSprite ) - startOfLine > m_fWidth )
            {
                if (!m_bLineBreakWithoutSpaces)
                {
                    last_word.push_back(character);

                    int found = cc_utf8_find_last_not_char(multiline_string, ' ');
                    if (found != -1)
                        cc_utf8_trim_ws(&multiline_string);
                    else
                        multiline_string.clear();

                    if (multiline_string.size() > 0)
                        multiline_string.push_back('\n');

                    line++;
                    start_line = false;
                    startOfLine = -1;
                    i++;
                }
                else
                {
                    cc_utf8_trim_ws(&last_word);

                    last_word.push_back('\n');
                    multiline_string.insert(multiline_string.end(), last_word.begin(), last_word.end());
                    last_word.clear();
                    start_word = false;
                    start_line = false;
                    startOfWord = -1;
                    startOfLine = -1;
                    line++;

                    if (i >= stringLength)
                        break;

                    if (!startOfWord)
                    {
                        startOfWord = getLetterPosXLeft( characterSprite );
                        start_word = true;
                    }
                    if (!startOfLine)
                    {
                        startOfLine  = startOfWord;
                        start_line = true;
                    }

                    j--;
                }

                continue;
            }
            else
            {
                // Character is normal.
                last_word.push_back(character);
                i++;
                continue;
            }
        }

        multiline_string.insert(multiline_string.end(), last_word.begin(), last_word.end());

        int size = multiline_string.size();
        unsigned short* str_new = new unsigned short[size + 1];

        for (int i = 0; i < size; ++i)
        {
            str_new[i] = multiline_string[i];
        }

        str_new[size] = 0;

        CC_SAFE_DELETE_ARRAY(m_sString);
        m_sString = str_new;
        updateString(true);
    }

    // Step 2: Make alignment
    if (m_pAlignment != kCCTextAlignmentLeft)
    {
        int i = 0;

        int lineNumber = 0;
        int str_len = cc_wcslen(m_sString);
        vector<unsigned short> last_line;
        for (int ctr = 0; ctr <= str_len; ++ctr)
        {
            if (m_sString[ctr] == '\n' || m_sString[ctr] == 0)
            {
                float lineWidth = 0.0f;
                unsigned int line_length = last_line.size();
                int index = i + line_length - 1 + lineNumber;
                if (index < 0) continue;

                CCSprite* lastChar = (CCSprite*)getChildByTag(index);
                if ( lastChar == NULL )
                    continue;

                lineWidth = lastChar->getPosition().x + lastChar->getContentSize().width/2.0f;

                float shift = 0;
                switch (m_pAlignment)
                {
                case kCCTextAlignmentCenter:
                    shift = getContentSize().width/2.0f - lineWidth/2.0f;
                    break;
                case kCCTextAlignmentRight:
                    shift = getContentSize().width - lineWidth;
                    break;
                default:
                    break;
                }

                if (shift != 0)
                {
                    for (unsigned j = 0; j < line_length; j++)
                    {
                        index = i + j + lineNumber;
                        if (index < 0) continue;

                        CCSprite* characterSprite = (CCSprite*)getChildByTag(index);
                        characterSprite->setPosition(ccpAdd(characterSprite->getPosition(), ccp(shift, 0.0f)));
                    }
                }

                i += line_length;
                lineNumber++;

                last_line.clear();
                continue;
            }

            last_line.push_back(m_sString[ctr]);
        }
    }
}

// LabelBMFont - Alignment
void CCLabelBMFont::setAlignment(CCTextAlignment alignment)
{
    this->m_pAlignment = alignment;
    updateLabel();
}

void CCLabelBMFont::setWidth(float width)
{
    this->m_fWidth = width;
    updateLabel();
}

void CCLabelBMFont::setLineBreakWithoutSpace( bool breakWithoutSpace )
{
    m_bLineBreakWithoutSpaces = breakWithoutSpace;
    updateLabel();
}

void CCLabelBMFont::setScale(float scale)
{
    CCSpriteBatchNode::setScale(scale);
    updateLabel();
}

void CCLabelBMFont::setScaleX(float scaleX)
{
    CCSpriteBatchNode::setScaleX(scaleX);
    updateLabel();
}

void CCLabelBMFont::setScaleY(float scaleY)
{
    CCSpriteBatchNode::setScaleY(scaleY);
    updateLabel();
}

float CCLabelBMFont::getLetterPosXLeft( CCSprite* sp )
{
    return sp->getPosition().x * m_fScaleX - (sp->getContentSize().width * m_fScaleX * sp->getAnchorPoint().x);
}

float CCLabelBMFont::getLetterPosXRight( CCSprite* sp )
{
    return sp->getPosition().x * m_fScaleX + (sp->getContentSize().width * m_fScaleX * sp->getAnchorPoint().x);
}

// LabelBMFont - FntFile
void CCLabelBMFont::setFntFile(const char* fntFile)
{
    if (fntFile != NULL && strcmp(fntFile, m_sFntFile.c_str()) != 0 )
    {
        CCBMFontConfiguration *newConf = FNTConfigLoadFile(fntFile);

        CCAssert( newConf, "CCLabelBMFont: Impossible to create font. Please check file");

        m_sFntFile = fntFile;

        CC_SAFE_RETAIN(newConf);
        CC_SAFE_RELEASE(m_pConfiguration);
        m_pConfiguration = newConf;

        this->setTexture(CCTextureCache::sharedTextureCache()->addImage(m_pConfiguration->getAtlasName()));
        this->createFontChars();
    }
}

const char* CCLabelBMFont::getFntFile()
{
    return m_sFntFile.c_str();
}


//LabelBMFont - Debug draw
#if CC_LABELBMFONT_DEBUG_DRAW
void CCLabelBMFont::draw()
{
    CCSpriteBatchNode::draw();
    const CCSize& s = this->getContentSize();
    CCPoint vertices[4]={
        ccp(0,0),ccp(s.width,0),
        ccp(s.width,s.height),ccp(0,s.height),
    };
    ccDrawPoly(vertices, 4, true);
}

#endif // CC_LABELBMFONT_DEBUG_DRAW

NS_CC_END