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Overview
Comment:More refactoring and cleanup work on the Win32 string conversion and utility routines.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | altShellFix
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SHA1:02ccb444a3d0b9a52ffd04cae9d9b6f654128c35
User & Date: mistachkin 2016-04-04 02:05:46
Context
2016-04-04
02:16
Experimental changes to the command line shell to make it work better with Unicode on Windows. check-in: 74183a5f user: mistachkin tags: altShellFix
02:05
More refactoring and cleanup work on the Win32 string conversion and utility routines. check-in: 02ccb444 user: mistachkin tags: altShellFix
2016-04-03
22:44
Revise and enhance the Win32 string conversion routines. check-in: 345860c9 user: mistachkin tags: altShellFix
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/os_win.c.

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*/

void sqlite3_win32_write_debug(const char *zBuf, int nBuf){
  char zDbgBuf[SQLITE_WIN32_DBG_BUF_SIZE];
  int nMin = MIN(nBuf, (SQLITE_WIN32_DBG_BUF_SIZE - 1)); /* may be negative. */
  if( nMin<-1 ) nMin = -1; /* all negative values become -1. */
  assert( nMin==-1 || nMin==0 || nMin<SQLITE_WIN32_DBG_BUF_SIZE );






#if defined(SQLITE_WIN32_HAS_ANSI)
  if( nMin>0 ){
    memset(zDbgBuf, 0, SQLITE_WIN32_DBG_BUF_SIZE);
    memcpy(zDbgBuf, zBuf, nMin);
    osOutputDebugStringA(zDbgBuf);
  }else{
    osOutputDebugStringA(zBuf);
................................................................................

void sqlite3MemSetDefault(void){
  sqlite3_config(SQLITE_CONFIG_MALLOC, sqlite3MemGetWin32());
}
#endif /* SQLITE_WIN32_MALLOC */

/*
** Convert a UTF-8 string to Microsoft Unicode (UTF-16?).
**
** Space to hold the returned string is obtained from malloc.
*/
static LPWSTR winUtf8ToUnicode(const char *zText){
  int nChar;
  LPWSTR zWideText;

  nChar = osMultiByteToWideChar(CP_UTF8, 0, zText, -1, NULL, 0);
  if( nChar==0 ){
................................................................................
    sqlite3_free(zWideText);
    zWideText = 0;
  }
  return zWideText;
}

/*
** Convert Microsoft Unicode to UTF-8.  Space to hold the returned string is

** obtained from sqlite3_malloc().
*/
static char *winUnicodeToUtf8(LPCWSTR zWideText){
  int nByte;
  char *zText;

  nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideText, -1, 0, 0, 0, 0);
  if( nByte == 0 ){
................................................................................
    sqlite3_free(zText);
    zText = 0;
  }
  return zText;
}

/*
** Convert an ANSI string to Microsoft Unicode, based on the
** current codepage settings for file apis.
**
** Space to hold the returned string is obtained
** from sqlite3_malloc.
*/
static LPWSTR winMbcsToUnicode(const char *zText, int useAnsi){
  int nByte;
  LPWSTR zMbcsFilename;
  int codepage = useAnsi ? CP_ACP : CP_OEMCP;

  nByte = osMultiByteToWideChar(codepage, 0, zText, -1, NULL,
                                0)*sizeof(WCHAR);
  if( nByte==0 ){
    return 0;
  }
  zMbcsFilename = sqlite3MallocZero( nByte*sizeof(zMbcsFilename[0]) );
  if( zMbcsFilename==0 ){
    return 0;
  }
  nByte = osMultiByteToWideChar(codepage, 0, zText, -1, zMbcsFilename,
                                nByte);
  if( nByte==0 ){
    sqlite3_free(zMbcsFilename);
    zMbcsFilename = 0;
  }
  return zMbcsFilename;
}

/*
** Convert Microsoft Unicode to multi-byte character string, based on the
** user's ANSI codepage.
**
** Space to hold the returned string is obtained from
** sqlite3_malloc().
*/
static char *winUnicodeToMbcs(LPCWSTR zWideText, int useAnsi){
  int nByte;
  char *zText;
  int codepage = useAnsi ? CP_ACP : CP_OEMCP;

  nByte = osWideCharToMultiByte(codepage, 0, zWideText, -1, 0, 0, 0, 0);
................................................................................
    sqlite3_free(zText);
    zText = 0;
  }
  return zText;
}

/*
** Convert multibyte character string to UTF-8.  Space to hold the

** returned string is obtained from sqlite3_malloc().
*/
char *sqlite3_win32_mbcs_to_utf8(const char *zText){
  char *zTextUtf8;
  LPWSTR zTmpWide;

  zTmpWide = winMbcsToUnicode(zText, osAreFileApisANSI());
  if( zTmpWide==0 ){
    return 0;
  }
  zTextUtf8 = winUnicodeToUtf8(zTmpWide);
  sqlite3_free(zTmpWide);
  return zTextUtf8;
}

/*
** Convert multibyte character string to UTF-8 using the ANSI codepage.
** Space to hold the returned string is obtained from sqlite3_malloc().
*/
char *sqlite3_win32_mbcs_to_utf8_via_ansi(const char *zText){
  char *zTextUtf8;
  LPWSTR zTmpWide;

  zTmpWide = winMbcsToUnicode(zText, 1);
  if( zTmpWide==0 ){
    return 0;
  }
  zTextUtf8 = winUnicodeToUtf8(zTmpWide);
  sqlite3_free(zTmpWide);
  return zTextUtf8;
}

/*
** Convert multibyte character string to UTF-8 using the OEM codepage.
** Space to hold the returned string is obtained from sqlite3_malloc().
*/
char *sqlite3_win32_mbcs_to_utf8_via_oem(const char *zText){
  char *zTextUtf8;
  LPWSTR zTmpWide;

  zTmpWide = winMbcsToUnicode(zText, 0);
  if( zTmpWide==0 ){
    return 0;
  }
  zTextUtf8 = winUnicodeToUtf8(zTmpWide);
  sqlite3_free(zTmpWide);
  return zTextUtf8;
}

/*
** Convert UTF-8 to multibyte character string.  Space to hold the
** returned string is obtained from sqlite3_malloc().
*/
char *sqlite3_win32_utf8_to_mbcs(const char *zText){
  char *zTextMbcs;
  LPWSTR zTmpWide;

  zTmpWide = winUtf8ToUnicode(zText);
  if( zTmpWide==0 ){
    return 0;
  }
  zTextMbcs = winUnicodeToMbcs(zTmpWide, osAreFileApisANSI());
  sqlite3_free(zTmpWide);
  return zTextMbcs;
}

/*
** Convert UTF-8 to multibyte character string using the ANSI codepage.
** Space to hold the returned string is obtained from sqlite3_malloc().
*/
char *sqlite3_win32_utf8_to_mbcs_via_ansi(const char *zText){

  char *zTextMbcs;
  LPWSTR zTmpWide;






  zTmpWide = winUtf8ToUnicode(zText);
  if( zTmpWide==0 ){









    return 0;
  }
  zTextMbcs = winUnicodeToMbcs(zTmpWide, 1);
  sqlite3_free(zTmpWide);














  return zTextMbcs;






































}

/*
** Convert UTF-8 to multibyte character string using the OEM codepage.
** Space to hold the returned string is obtained from sqlite3_malloc().
*/
char *sqlite3_win32_utf8_to_mbcs_via_oem(const char *zText){
  char *zTextMbcs;
  LPWSTR zTmpWide;

  zTmpWide = winUtf8ToUnicode(zText);
  if( zTmpWide==0 ){
    return 0;
  }
  zTextMbcs = winUnicodeToMbcs(zTmpWide, 0);
  sqlite3_free(zTmpWide);
  return zTextMbcs;
}

/*
** This function sets the data directory or the temporary directory based on
** the provided arguments.  The type argument must be 1 in order to set the
** data directory or 2 in order to set the temporary directory.  The zValue
** argument is the name of the directory to use.  The return value will be
................................................................................
                             0,
                             (LPSTR) &zTemp,
                             0,
                             0);
    if( dwLen > 0 ){
      /* allocate a buffer and convert to UTF8 */
      sqlite3BeginBenignMalloc();
      zOut = sqlite3_win32_mbcs_to_utf8(zTemp);
      sqlite3EndBenignMalloc();
      /* free the system buffer allocated by FormatMessage */
      osLocalFree(zTemp);
    }
  }
#endif
  if( 0 == dwLen ){
................................................................................
static char *winConvertToUtf8Filename(const void *zFilename){
  char *zConverted = 0;
  if( osIsNT() ){
    zConverted = winUnicodeToUtf8(zFilename);
  }
#ifdef SQLITE_WIN32_HAS_ANSI
  else{
    zConverted = sqlite3_win32_mbcs_to_utf8(zFilename);
  }
#endif
  /* caller will handle out of memory */
  return zConverted;
}
#endif

................................................................................
static void *winConvertFromUtf8Filename(const char *zFilename){
  void *zConverted = 0;
  if( osIsNT() ){
    zConverted = winUtf8ToUnicode(zFilename);
  }
#ifdef SQLITE_WIN32_HAS_ANSI
  else{
    zConverted = sqlite3_win32_utf8_to_mbcs(zFilename);
  }
#endif
  /* caller will handle out of memory */
  return zConverted;
}

/*
................................................................................
    }
    if( osGetTempPathA(nMax, zMbcsPath)==0 ){
      sqlite3_free(zBuf);
      OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_GETTEMPPATH\n"));
      return winLogError(SQLITE_IOERR_GETTEMPPATH, osGetLastError(),
                         "winGetTempname3", 0);
    }
    zUtf8 = sqlite3_win32_mbcs_to_utf8(zMbcsPath);
    if( zUtf8 ){
      sqlite3_snprintf(nMax, zBuf, "%s", zUtf8);
      sqlite3_free(zUtf8);
    }else{
      sqlite3_free(zBuf);
      OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
      return SQLITE_IOERR_NOMEM_BKPT;
................................................................................
    if( nByte==0 ){
      sqlite3_free(zConverted);
      sqlite3_free(zTemp);
      return winLogError(SQLITE_CANTOPEN_FULLPATH, osGetLastError(),
                         "winFullPathname4", zRelative);
    }
    sqlite3_free(zConverted);
    zOut = sqlite3_win32_mbcs_to_utf8(zTemp);
    sqlite3_free(zTemp);
  }
#endif
  if( zOut ){
    sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s", zOut);
    sqlite3_free(zOut);
    return SQLITE_OK;







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*/

void sqlite3_win32_write_debug(const char *zBuf, int nBuf){
  char zDbgBuf[SQLITE_WIN32_DBG_BUF_SIZE];
  int nMin = MIN(nBuf, (SQLITE_WIN32_DBG_BUF_SIZE - 1)); /* may be negative. */
  if( nMin<-1 ) nMin = -1; /* all negative values become -1. */
  assert( nMin==-1 || nMin==0 || nMin<SQLITE_WIN32_DBG_BUF_SIZE );
#ifdef SQLITE_ENABLE_API_ARMOR
  if( !zBuf ){
    (void)SQLITE_MISUSE_BKPT;
    return;
  }
#endif
#if defined(SQLITE_WIN32_HAS_ANSI)
  if( nMin>0 ){
    memset(zDbgBuf, 0, SQLITE_WIN32_DBG_BUF_SIZE);
    memcpy(zDbgBuf, zBuf, nMin);
    osOutputDebugStringA(zDbgBuf);
  }else{
    osOutputDebugStringA(zBuf);
................................................................................

void sqlite3MemSetDefault(void){
  sqlite3_config(SQLITE_CONFIG_MALLOC, sqlite3MemGetWin32());
}
#endif /* SQLITE_WIN32_MALLOC */

/*
** Convert a UTF-8 string to Microsoft Unicode.
**
** Space to hold the returned string is obtained from sqlite3_malloc().
*/
static LPWSTR winUtf8ToUnicode(const char *zText){
  int nChar;
  LPWSTR zWideText;

  nChar = osMultiByteToWideChar(CP_UTF8, 0, zText, -1, NULL, 0);
  if( nChar==0 ){
................................................................................
    sqlite3_free(zWideText);
    zWideText = 0;
  }
  return zWideText;
}

/*
** Convert a Microsoft Unicode string to UTF-8.
**
** Space to hold the returned string is obtained from sqlite3_malloc().
*/
static char *winUnicodeToUtf8(LPCWSTR zWideText){
  int nByte;
  char *zText;

  nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideText, -1, 0, 0, 0, 0);
  if( nByte == 0 ){
................................................................................
    sqlite3_free(zText);
    zText = 0;
  }
  return zText;
}

/*
** Convert an ANSI string to Microsoft Unicode, using the ANSI or OEM
** code page.
**
** Space to hold the returned string is obtained from sqlite3_malloc().

*/
static LPWSTR winMbcsToUnicode(const char *zText, int useAnsi){
  int nByte;
  LPWSTR zMbcsText;
  int codepage = useAnsi ? CP_ACP : CP_OEMCP;

  nByte = osMultiByteToWideChar(codepage, 0, zText, -1, NULL,
                                0)*sizeof(WCHAR);
  if( nByte==0 ){
    return 0;
  }
  zMbcsText = sqlite3MallocZero( nByte*sizeof(WCHAR) );
  if( zMbcsText==0 ){
    return 0;
  }
  nByte = osMultiByteToWideChar(codepage, 0, zText, -1, zMbcsText,
                                nByte);
  if( nByte==0 ){
    sqlite3_free(zMbcsText);
    zMbcsText = 0;
  }
  return zMbcsText;
}

/*
** Convert a Microsoft Unicode string to a multi-byte character string,
** using the ANSI or OEM code page.
**
** Space to hold the returned string is obtained from sqlite3_malloc().

*/
static char *winUnicodeToMbcs(LPCWSTR zWideText, int useAnsi){
  int nByte;
  char *zText;
  int codepage = useAnsi ? CP_ACP : CP_OEMCP;

  nByte = osWideCharToMultiByte(codepage, 0, zWideText, -1, 0, 0, 0, 0);
................................................................................
    sqlite3_free(zText);
    zText = 0;
  }
  return zText;
}

/*
** Convert a multi-byte character string to UTF-8.
**
** Space to hold the returned string is obtained from sqlite3_malloc().
*/
static char *winMbcsToUtf8(const char *zText, int useAnsi){
  char *zTextUtf8;
  LPWSTR zTmpWide;


















  zTmpWide = winMbcsToUnicode(zText, useAnsi);
  if( zTmpWide==0 ){
    return 0;
  }
  zTextUtf8 = winUnicodeToUtf8(zTmpWide);
  sqlite3_free(zTmpWide);
  return zTextUtf8;
}

/*
** Convert a UTF-8 string to a multi-byte character string.

**















** Space to hold the returned string is obtained from sqlite3_malloc().
*/
static char *winUtf8ToMbcs(const char *zText, int useAnsi){
  char *zTextMbcs;
  LPWSTR zTmpWide;

  zTmpWide = winUtf8ToUnicode(zText);
  if( zTmpWide==0 ){
    return 0;
  }
  zTextMbcs = winUnicodeToMbcs(zTmpWide, useAnsi);
  sqlite3_free(zTmpWide);
  return zTextMbcs;
}

/*
** This is a public wrapper for the winUtf8ToUnicode() function.

*/
LPWSTR sqlite3_win32_utf8_to_unicode(const char *zText){
#ifdef SQLITE_ENABLE_API_ARMOR
  if( !zText ){
    (void)SQLITE_MISUSE_BKPT;
    return 0;
  }
#endif
#ifndef SQLITE_OMIT_AUTOINIT
  if( sqlite3_initialize() ) return 0;
#endif
  return winUtf8ToUnicode(zText);

}

/*
** This is a public wrapper for the winUnicodeToUtf8() function.
*/
char *sqlite3_win32_unicode_to_utf8(LPCWSTR zWideText){
#ifdef SQLITE_ENABLE_API_ARMOR
  if( !zWideText ){
    (void)SQLITE_MISUSE_BKPT;
    return 0;
  }


#endif
#ifndef SQLITE_OMIT_AUTOINIT
  if( sqlite3_initialize() ) return 0;
#endif
  return winUnicodeToUtf8(zWideText);
}

/*
** This is a public wrapper for the winMbcsToUtf8() function.
*/
char *sqlite3_win32_mbcs_to_utf8(const char *zText){
#ifdef SQLITE_ENABLE_API_ARMOR
  if( !zText ){
    (void)SQLITE_MISUSE_BKPT;
    return 0;
  }
#endif
#ifndef SQLITE_OMIT_AUTOINIT
  if( sqlite3_initialize() ) return 0;
#endif
  return winMbcsToUtf8(zText, osAreFileApisANSI());
}

/*
** This is a public wrapper for the winMbcsToUtf8() function.
*/
char *sqlite3_win32_mbcs_to_utf8_v2(const char *zText, int useAnsi){
#ifdef SQLITE_ENABLE_API_ARMOR
  if( !zText ){
    (void)SQLITE_MISUSE_BKPT;
    return 0;
  }
#endif
#ifndef SQLITE_OMIT_AUTOINIT
  if( sqlite3_initialize() ) return 0;
#endif
  return winMbcsToUtf8(zText, useAnsi);
}

/*
** This is a public wrapper for the winUtf8ToMbcs() function.
*/
char *sqlite3_win32_utf8_to_mbcs(const char *zText){
#ifdef SQLITE_ENABLE_API_ARMOR
  if( !zText ){
    (void)SQLITE_MISUSE_BKPT;
    return 0;
  }
#endif
#ifndef SQLITE_OMIT_AUTOINIT
  if( sqlite3_initialize() ) return 0;
#endif
  return winUtf8ToMbcs(zText, osAreFileApisANSI());
}

/*
** This is a public wrapper for the winUtf8ToMbcs() function.
*/
char *sqlite3_win32_utf8_to_mbcs_v2(const char *zText, int useAnsi){
#ifdef SQLITE_ENABLE_API_ARMOR
  if( !zText ){
    (void)SQLITE_MISUSE_BKPT;
    return 0;
  }
#endif
#ifndef SQLITE_OMIT_AUTOINIT
  if( sqlite3_initialize() ) return 0;
#endif
  return winUtf8ToMbcs(zText, useAnsi);

}

/*
** This function sets the data directory or the temporary directory based on
** the provided arguments.  The type argument must be 1 in order to set the
** data directory or 2 in order to set the temporary directory.  The zValue
** argument is the name of the directory to use.  The return value will be
................................................................................
                             0,
                             (LPSTR) &zTemp,
                             0,
                             0);
    if( dwLen > 0 ){
      /* allocate a buffer and convert to UTF8 */
      sqlite3BeginBenignMalloc();
      zOut = winMbcsToUtf8(zTemp, osAreFileApisANSI());
      sqlite3EndBenignMalloc();
      /* free the system buffer allocated by FormatMessage */
      osLocalFree(zTemp);
    }
  }
#endif
  if( 0 == dwLen ){
................................................................................
static char *winConvertToUtf8Filename(const void *zFilename){
  char *zConverted = 0;
  if( osIsNT() ){
    zConverted = winUnicodeToUtf8(zFilename);
  }
#ifdef SQLITE_WIN32_HAS_ANSI
  else{
    zConverted = winMbcsToUtf8(zFilename, osAreFileApisANSI());
  }
#endif
  /* caller will handle out of memory */
  return zConverted;
}
#endif

................................................................................
static void *winConvertFromUtf8Filename(const char *zFilename){
  void *zConverted = 0;
  if( osIsNT() ){
    zConverted = winUtf8ToUnicode(zFilename);
  }
#ifdef SQLITE_WIN32_HAS_ANSI
  else{
    zConverted = winUtf8ToMbcs(zFilename, osAreFileApisANSI());
  }
#endif
  /* caller will handle out of memory */
  return zConverted;
}

/*
................................................................................
    }
    if( osGetTempPathA(nMax, zMbcsPath)==0 ){
      sqlite3_free(zBuf);
      OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_GETTEMPPATH\n"));
      return winLogError(SQLITE_IOERR_GETTEMPPATH, osGetLastError(),
                         "winGetTempname3", 0);
    }
    zUtf8 = winMbcsToUtf8(zMbcsPath, osAreFileApisANSI());
    if( zUtf8 ){
      sqlite3_snprintf(nMax, zBuf, "%s", zUtf8);
      sqlite3_free(zUtf8);
    }else{
      sqlite3_free(zBuf);
      OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
      return SQLITE_IOERR_NOMEM_BKPT;
................................................................................
    if( nByte==0 ){
      sqlite3_free(zConverted);
      sqlite3_free(zTemp);
      return winLogError(SQLITE_CANTOPEN_FULLPATH, osGetLastError(),
                         "winFullPathname4", zRelative);
    }
    sqlite3_free(zConverted);
    zOut = winMbcsToUtf8(zTemp, osAreFileApisANSI());
    sqlite3_free(zTemp);
  }
#endif
  if( zOut ){
    sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s", zOut);
    sqlite3_free(zOut);
    return SQLITE_OK;