From c992cb2fdc11f1cac4bc5cbce26e8e2bb3b57da0 Mon Sep 17 00:00:00 2001 From: George Hazan Date: Tue, 26 Jun 2012 16:50:14 +0000 Subject: - microkernel addded; - version bumped to 0.92.2 git-svn-id: http://svn.miranda-ng.org/main/trunk@641 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c --- tools/dbtool/utf.cpp | 376 --------------------------------------------------- 1 file changed, 376 deletions(-) (limited to 'tools/dbtool/utf.cpp') diff --git a/tools/dbtool/utf.cpp b/tools/dbtool/utf.cpp index 157d5d00f5..c56db053d8 100644 --- a/tools/dbtool/utf.cpp +++ b/tools/dbtool/utf.cpp @@ -26,382 +26,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. #include "dbtool.h" -/* number of following bytes in sequence based on first byte value (for bytes above 0x7f) */ -static const char utf8_length[128] = -{ - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x80-0x8f */ - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x90-0x9f */ - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xa0-0xaf */ - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xb0-0xbf */ - 0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xc0-0xcf */ - 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xd0-0xdf */ - 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /* 0xe0-0xef */ - 3,3,3,3,3,0,0,0,0,0,0,0,0,0,0,0 /* 0xf0-0xff */ -}; - -/* first byte mask depending on UTF-8 sequence length */ -static const unsigned char utf8_mask[4] = { 0x7f, 0x1f, 0x0f, 0x07 }; - -/* minimum Unicode value depending on UTF-8 sequence length */ -static const unsigned int utf8_minval[4] = { 0x0, 0x80, 0x800, 0x10000 }; - - -/* get the next char value taking surrogates into account */ -static unsigned int getSurrogateValue(const wchar_t *src, unsigned int srclen) -{ - if (src[0] >= 0xd800 && src[0] <= 0xdfff) /* surrogate pair */ - { - if (src[0] > 0xdbff || /* invalid high surrogate */ - srclen <= 1 || /* missing low surrogate */ - src[1] < 0xdc00 || src[1] > 0xdfff) /* invalid low surrogate */ - return 0; - return 0x10000 + ((src[0] & 0x3ff) << 10) + (src[1] & 0x3ff); - } - return src[0]; -} - -/* query necessary dst length for src string */ -static int Ucs2toUtf8Len(const wchar_t *src, unsigned int srclen) -{ - int len; - unsigned int val; - - for (len = 0; srclen; srclen--, src++) - { - if (*src < 0x80) /* 0x00-0x7f: 1 byte */ - { - len++; - continue; - } - if (*src < 0x800) /* 0x80-0x7ff: 2 bytes */ - { - len += 2; - continue; - } - if (!(val = getSurrogateValue(src, srclen))) - { - return -2; - } - if (val < 0x10000) /* 0x800-0xffff: 3 bytes */ - len += 3; - else /* 0x10000-0x10ffff: 4 bytes */ - { - len += 4; - src++; - srclen--; - } - } - return len; -} - -int Ucs2toUtf8Len(const wchar_t *src) -{ - if ( src == 0 ) - return 0; - - return Ucs2toUtf8Len( src, (int)wcslen( src )); -} - -/* wide char to UTF-8 string conversion */ -/* return -1 on dst buffer overflow, -2 on invalid input char */ -int Ucs2toUtf8(const wchar_t *src, int srclen, char *dst, int dstlen) -{ - int len; - - for (len = dstlen; srclen; srclen--, src++) - { - WCHAR ch = *src; - unsigned int val; - - if (ch < 0x80) /* 0x00-0x7f: 1 byte */ - { - if (!len--) return -1; /* overflow */ - *dst++ = ch; - continue; - } - - if (ch < 0x800) /* 0x80-0x7ff: 2 bytes */ - { - if ((len -= 2) < 0) return -1; /* overflow */ - dst[1] = 0x80 | (ch & 0x3f); - ch >>= 6; - dst[0] = 0xc0 | ch; - dst += 2; - continue; - } - - if (!(val = getSurrogateValue(src, srclen))) - { - return -2; - } - - if (val < 0x10000) /* 0x800-0xffff: 3 bytes */ - { - if ((len -= 3) < 0) return -1; /* overflow */ - dst[2] = 0x80 | (val & 0x3f); - val >>= 6; - dst[1] = 0x80 | (val & 0x3f); - val >>= 6; - dst[0] = 0xe0 | val; - dst += 3; - } - else /* 0x10000-0x10ffff: 4 bytes */ - { - if ((len -= 4) < 0) return -1; /* overflow */ - dst[3] = 0x80 | (val & 0x3f); - val >>= 6; - dst[2] = 0x80 | (val & 0x3f); - val >>= 6; - dst[1] = 0x80 | (val & 0x3f); - val >>= 6; - dst[0] = 0xf0 | val; - dst += 4; - src++; - srclen--; - } - } - return dstlen - len; -} - -/* helper for the various utf8 mbstowcs functions */ -static unsigned int decodeUtf8Char(unsigned char ch, const char **str, const char *strend) -{ - unsigned int len = utf8_length[ch-0x80]; - unsigned int res = ch & utf8_mask[len]; - const char *end = *str + len; - - if (end > strend) return ~0; - switch(len) - { - case 3: - if ((ch = end[-3] ^ 0x80) >= 0x40) break; - res = (res << 6) | ch; - (*str)++; - case 2: - if ((ch = end[-2] ^ 0x80) >= 0x40) break; - res = (res << 6) | ch; - (*str)++; - case 1: - if ((ch = end[-1] ^ 0x80) >= 0x40) break; - res = (res << 6) | ch; - (*str)++; - if (res < utf8_minval[len]) break; - return res; - } - return ~0; -} - -/* query necessary dst length for src string */ -static inline int Utf8toUcs2Len(const char *src, int srclen) -{ - int ret = 0; - unsigned int res; - const char *srcend = src + srclen; - - while (src < srcend) - { - unsigned char ch = *src++; - if (ch < 0x80) /* special fast case for 7-bit ASCII */ - { - ret++; - continue; - } - if ((res = decodeUtf8Char(ch, &src, srcend)) <= 0x10ffff) - { - if (res > 0xffff) ret++; - ret++; - } - else return -2; /* bad char */ - /* otherwise ignore it */ - } - return ret; -} - -/* UTF-8 to wide char string conversion */ -/* return -1 on dst buffer overflow, -2 on invalid input char */ -int Utf8toUcs2(const char *src, int srclen, wchar_t *dst, int dstlen) -{ - unsigned int res; - const char *srcend = src + srclen; - wchar_t *dstend = dst + dstlen; - - while ((dst < dstend) && (src < srcend)) - { - unsigned char ch = *src++; - if (ch < 0x80) /* special fast case for 7-bit ASCII */ - { - *dst++ = ch; - continue; - } - if ((res = decodeUtf8Char(ch, &src, srcend)) <= 0xffff) - { - *dst++ = res; - } - else if (res <= 0x10ffff) /* we need surrogates */ - { - if (dst == dstend - 1) return -1; /* overflow */ - res -= 0x10000; - *dst++ = 0xd800 | (res >> 10); - *dst++ = 0xdc00 | (res & 0x3ff); - } - else return -2; /* bad char */ - /* otherwise ignore it */ - } - if (src < srcend) return -1; /* overflow */ - return dstlen - (dstend - dst); -} - -///////////////////////////////////////////////////////////////////////////////////////// -// Utf8Decode - converts UTF8-encoded string to the UCS2/MBCS format - -char* Utf8DecodeCP(char* str, int codepage, wchar_t** ucs2) -{ - int len; - bool needs_free = false; - wchar_t* tempBuf = NULL; - if ( ucs2 ) - *ucs2 = NULL; - - if (str == NULL) - return NULL; - - len = (int)strlen(str); - - if (len < 2) { - if (ucs2 != NULL) { - *ucs2 = tempBuf = (wchar_t*)malloc((len + 1) * sizeof(wchar_t)); - MultiByteToWideChar(codepage, 0, str, len, tempBuf, len); - tempBuf[len] = 0; - } - return str; - } - - int destlen = Utf8toUcs2Len(str, len); - if (destlen < 0) - return NULL; - - if (ucs2 == NULL) { - __try - { - tempBuf = (wchar_t*)alloca((destlen + 1) * sizeof(wchar_t)); - } - __except(EXCEPTION_EXECUTE_HANDLER) - { - tempBuf = NULL; - needs_free = true; - } - } - - if ( tempBuf == NULL ) { - tempBuf = (wchar_t*)malloc((destlen + 1) * sizeof(wchar_t)); - if ( tempBuf == NULL ) - return NULL; - } - - Utf8toUcs2(str, len, tempBuf, destlen); - tempBuf[destlen] = 0; - WideCharToMultiByte(codepage, 0, tempBuf, -1, str, len + 1, "?", NULL); - - if (ucs2) - *ucs2 = tempBuf; - else if (needs_free) - free(tempBuf); - - return str; -} - -wchar_t* Utf8DecodeUcs2(const char* str) -{ - if (str == NULL) - return NULL; - - int len = (int)strlen(str); - - int destlen = Utf8toUcs2Len(str, len); - if (destlen < 0) return NULL; - - wchar_t* ucs2 = (wchar_t*)malloc((destlen + 1) * sizeof(wchar_t)); - if (ucs2 == NULL) return NULL; - - if (Utf8toUcs2(str, len, ucs2, destlen) >= 0) - { - ucs2[destlen] = 0; - return ucs2; - } - - free(ucs2); - - return NULL; -} - -///////////////////////////////////////////////////////////////////////////////////////// -// Utf8Encode - converts MBCS string to the UTF8-encoded format - -char* Utf8EncodeCP(const char* src, int codepage) -{ - int len; - bool needs_free = false; - char* result = NULL; - wchar_t* tempBuf; - - if (src == NULL) - return NULL; - - len = (int)strlen(src); - - __try - { - tempBuf = (wchar_t*)alloca((len + 1) * sizeof(wchar_t)); - } - __except(EXCEPTION_EXECUTE_HANDLER) - { - tempBuf = (wchar_t*)malloc((len + 1) * sizeof(wchar_t)); - if (tempBuf == NULL) return NULL; - needs_free = true; - } - - len = MultiByteToWideChar(codepage, 0, src, -1, tempBuf, len + 1); - - int destlen = Ucs2toUtf8Len(tempBuf, len); - if (destlen >= 0) - { - result = (char*)malloc(destlen + 1); - if (result) - { - Ucs2toUtf8(tempBuf, len, result, destlen); - result[destlen] = 0; - } - } - - if (needs_free) - free(tempBuf); - - return result; -} - -///////////////////////////////////////////////////////////////////////////////////////// -// Utf8Encode - converts UCS2 string to the UTF8-encoded format - -char* Utf8EncodeUcs2(const wchar_t* src) -{ - if (src == NULL) - return NULL; - - int len = (int)wcslen(src); - - int destlen = Ucs2toUtf8Len(src, len); - if (destlen < 0) return NULL; - - char* result = (char*)malloc(destlen + 1); - if (result == NULL) - return NULL; - - Ucs2toUtf8(src, len, result, destlen); - result[destlen] = 0; - - return result; -} - bool is_utf8_string(const char* str) { int expect_bytes = 0, utf_found = 0; -- cgit v1.2.3