sblogosutils.cpp

OSB-PIK-OpenVXI-3.0.0源代码 “中国XML论坛 - 专业的XML技术讨论区--XML在语音技术中的应用”

 
   /* Some versions of the GNU C library do not provide the required
      vswprintf( ) function, so we emulate it by converting the format
      string to narrow characters, do a narrow sprintf( ), then convert
      back */
 
   /* Use a temporary buffer for output to protect against relatively
      small overruns */
   char *buf, tmpbuf[BUFSIZE];
   if (BUFSIZE < maxlen + 1024)
     buf = new char[maxlen + 1024];
   else
     buf = tmpbuf;
   if (!buf)
     return -1;
 
   /* convert format to narrow, a bit generous compared to the ANSI/ISO
      C specifications for the printf( ) family format strings but we're
      not trying to do full validation here anyway */
   char *fmt, tmpfmt[BUFSIZE];
   size_t fmtlen = wcslen(format);
   if (BUFSIZE < fmtlen + 1)
     fmt = new char[fmtlen + 1];
   else
     fmt = tmpfmt;
   if (!fmt)
     return -1;
 
   format_wcs2str(format, fmt);
 
   /* generate the final string based on the narrow format and arguments */ 
   rc = vsprintf(buf, fmt, args);
 
   /* copy back to wide characters */
   size_t finallen = strlen(buf);
   if (finallen >= maxlen)
     finallen = maxlen - 1;
   for (size_t i = 0; i < finallen; i++)
     wcs[i] = buf[i];
   wcs[finallen] = L'\0';
 
   /* clean up */
   if (buf != tmpbuf)
     delete [] buf;
   if (fmt != tmpfmt)
     delete [] fmt;
 
 #else /* ! defined(__GNUC__) || (__GNUC__ > 2) */
 
   wchar_t* newFormat = ConvertFormatForWidePrintf(format);
   rc = vswprintf(wcs, maxlen, newFormat, args);
   delete [] newFormat;
 
   if ((size_t) rc >= maxlen - 1) /* overflow */
     wcs[maxlen - 1] = L'\0';
 
 #endif /* defined(__GNUC__) && (__GNUC__ <= 2) */
 #endif /* WIN32 */
 
   return rc;
 }
 
 /*****************************
 // SBlogMkDir
 *****************************/
 int SBlogMkDir(const char *path)
 {
 #ifdef WIN32
   return (CreateDirectory (path, NULL) ? 1 : 0);
 #else
   return (mkdir (path, (mode_t)0755) == 0 ? 1 : 0);
 #endif
 }
 
 /*****************************
 // SBlogIsDir
 *****************************/
 int SBlogIsDir(const SBlogFileStats *statInfo)
 {
 #ifdef WIN32
 
 #ifdef _S_ISDIR
   return (_S_ISDIR(statInfo->st_mode) ? 1 : 0);
 #else
   return ((statInfo->st_mode & _S_IFDIR) ? 1 : 0);
 #endif
 
 #else   // ! WIN32
 
 #ifdef S_ISDIR
   return (S_ISDIR(statInfo->st_mode) ? 1 : 0);
 #else
   return ((statInfo->st_mode & S_IFDIR) ? 1 : 0);
 #endif
 
 #endif  // WIN32
 }
 
 /*****************************
 // SBlogWchar2Latin1
 *****************************/
 extern "C" VXIbool SBlogWchar2Latin1(const wchar_t * input, char * output,
 				     VXIunsigned maxlen)
 {
   const wchar_t * i;
   char * j;
   unsigned int idx = 0;
   
   if( output == NULL ) 
     return FALSE;
 
   if(input == NULL)
   {
     *output = '\0';
   }
   else
   {  
     for (i = input, j = output; *i && idx < maxlen; ++i, ++j, ++idx) 
     {
       char t = w2c(*i);
       *j = t;
     }
     *j = '\0';
   }
 
   return TRUE;
 }
 
 
 /*****************************
 // SBlogWchar2UTF8
 *****************************/
 extern "C" VXIbool SBlogWchar2UTF8(const wchar_t * input, char * output,
 				   VXIunsigned maxOutputBytes,
 				   VXIunsigned * outputBytes)
 {
   //  firstByteMark
   //      A list of values to mask onto the first byte of an encoded sequence,
   //      indexed by the number of bytes used to create the sequence.
   static const char firstByteMark[7] =
     {  char(0x00), char(0x00), char(0xC0), char(0xE0),
        char(0xF0), char(0xF8), char(0xFC) };
 
   //  Get pointers to our start and end points of the input buffer.
   const wchar_t* srcPtr = input;
   const wchar_t* srcEnd = srcPtr + wcslen(input);
   *outputBytes = 0;
   
   while (srcPtr < srcEnd) {
     wchar_t curVal = *srcPtr++;
 
     // Watchout for surrogates, if found truncate
     if ((curVal >= 0xD800) && (curVal <= 0xDBFF)) {
       break;
     }
 
     // Figure out how many bytes we need
     unsigned int encodedBytes;
     if (curVal < 0x80)                encodedBytes = 1;
     else if (curVal < 0x800)          encodedBytes = 2;
     else if (curVal < 0x10000)        encodedBytes = 3;
     else if (curVal < 0x200000)       encodedBytes = 4;
     else if (curVal < 0x4000000)      encodedBytes = 5;
     else if (curVal <= 0x7FFFFFFF)    encodedBytes = 6;
     else {
       // THIS SHOULD NOT HAPPEN!
       output[*outputBytes] = '\0';
       return FALSE;
     }
 
     //  If we don't have enough room in the buffer, truncate
     if ( *outputBytes + encodedBytes >= maxOutputBytes ) {
       break;
     }
 
     //  And spit out the bytes. We spit them out in reverse order
     //  here, so bump up the output pointer and work down as we go.
     char buffer[7] = { 0, 0, 0, 0, 0, 0, 0 };
     
     char * outPtr = buffer + encodedBytes;
     switch(encodedBytes) {
     case 6 : *--outPtr = char((curVal | 0x80) & 0xBF);
       curVal >>= 6;
     case 5 : *--outPtr = char((curVal | 0x80) & 0xBF);
       curVal >>= 6;
     case 4 : *--outPtr = char((curVal | 0x80) & 0xBF);
       curVal >>= 6;
     case 3 : *--outPtr = char((curVal | 0x80) & 0xBF);
       curVal >>= 6;
     case 2 : *--outPtr = char((curVal | 0x80) & 0xBF);
       curVal >>= 6;
     case 1 : *--outPtr = char(curVal | firstByteMark[encodedBytes]);
     }
     
     for (int i = 0; buffer[i] != 0; i++) {
       output[*outputBytes] = buffer[i];
       (*outputBytes)++;
     }
   }
 
   //  NULL terminate
   output[*outputBytes] = '\0';
 
   return TRUE;
 }
 
 
 /*****************************
 // Log errors to the console, only used for errors that occur prior
 // to initializing the log subsystem
 *****************************/
 VXIlogResult 
 SBlogLogErrorToConsole(const VXIchar *moduleName, VXIunsigned errorID,
 		       const VXIchar *errorIDText)
 {
   VXIlogResult rc = VXIlog_RESULT_SUCCESS;
 
   const VXIchar *severity;
   if (errorID < 200)
     severity = L"CRITICAL";
   else if (errorID < 300)
     severity = L"SEVERE";
   else
     severity = L"WARNING";
 
 #ifdef WIN32
   fwprintf(stderr, L"%ls: %ls|%u|%ls\n", severity, moduleName, errorID,
 	   errorIDText);
 #else
   fprintf(stderr, "%ls: %ls|%u|%ls\n", severity, moduleName, errorID,
 	  errorIDText);
 #endif
 
   return rc;
 }
 
 
 VXIlogResult 
 SBlogVLogErrorToConsole(const VXIchar *moduleName, VXIunsigned errorID,
 			const VXIchar *errorIDText, const VXIchar *format,
 			va_list arguments)
 {
   int argCount;
   VXIlogResult rc = VXIlog_RESULT_SUCCESS;
   const VXIchar *in;
   VXIchar *out, tempFormat[256];
 
   /* Get the severity */
   const VXIchar *severity;
   if (errorID < 200)
     severity = L"CRITICAL";
   else if (errorID < 300)
     severity = L"SEVERE";
   else
     severity = L"WARNING";
 
   /* Properly delimit the format arguments for human consumption */
   argCount = 0;
   if (format) {
     for (in = format, out = tempFormat; *in != L'\0'; in++, out++) {
       if (*in == L'%') {
 	argCount++;
 	*out = (argCount % 2 == 0 ? L'=' : L'|');
 	out++;
       }
       *out = *in;
     }
     *out = L'\n';
     out++;
     *out = L'\0';
     
 #ifdef WIN32
     fwprintf(stderr, L"%ls: %ls|%u|%ls", severity, moduleName, errorID,
 	     errorIDText);
     vfwprintf(stderr, tempFormat, arguments);
 #else
     /* SBlogVswprintf( ) handles the format conversion if necessary
        from Microsoft Visual C++ run-time library/GNU gcc 2.x C
        library notation to GNU gcc 3.x C library (and most other UNIX
        C library) notation: %s -> %ls, %S -> %s. Unfortunately there
        is no single format string representation that can be used
        universally. */
     VXIchar tempBuf[4096];
     SBlogVswprintf(tempBuf, 4096, tempFormat, arguments);
     fprintf(stderr, "%ls: %ls|%u|%ls%ls\n", severity, moduleName, errorID,
 	    errorIDText, tempBuf);
 #endif
   } else {
 #ifdef WIN32
     fwprintf(stderr, L"%ls: %ls|%u|%ls\n", severity, moduleName, errorID,
 	     errorIDText);
 #else
     fprintf(stderr, "%ls: %ls|%u|%ls\n", severity, moduleName, errorID,
 	    errorIDText);
 #endif
   }
   
   return rc;
 }