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-rw-r--r--iconvlite.cpp189
1 files changed, 127 insertions, 62 deletions
diff --git a/iconvlite.cpp b/iconvlite.cpp
index a81ab70..af4bb4a 100644
--- a/iconvlite.cpp
+++ b/iconvlite.cpp
@@ -3,7 +3,76 @@
using namespace std;
-static void cp2utf1(char *out, const char *in) {
+typedef struct ConvLetter {
+ unsigned char win1251;
+ int unicode;
+} Letter;
+
+static Letter g_letters[] = {
+ {0x82, 0x201A}, // SINGLE LOW-9 QUOTATION MARK
+ {0x83, 0x0453}, // CYRILLIC SMALL LETTER GJE
+ {0x84, 0x201E}, // DOUBLE LOW-9 QUOTATION MARK
+ {0x85, 0x2026}, // HORIZONTAL ELLIPSIS
+ {0x86, 0x2020}, // DAGGER
+ {0x87, 0x2021}, // DOUBLE DAGGER
+ {0x88, 0x20AC}, // EURO SIGN
+ {0x89, 0x2030}, // PER MILLE SIGN
+ {0x8A, 0x0409}, // CYRILLIC CAPITAL LETTER LJE
+ {0x8B, 0x2039}, // SINGLE LEFT-POINTING ANGLE QUOTATION MARK
+ {0x8C, 0x040A}, // CYRILLIC CAPITAL LETTER NJE
+ {0x8D, 0x040C}, // CYRILLIC CAPITAL LETTER KJE
+ {0x8E, 0x040B}, // CYRILLIC CAPITAL LETTER TSHE
+ {0x8F, 0x040F}, // CYRILLIC CAPITAL LETTER DZHE
+ {0x90, 0x0452}, // CYRILLIC SMALL LETTER DJE
+ {0x91, 0x2018}, // LEFT SINGLE QUOTATION MARK
+ {0x92, 0x2019}, // RIGHT SINGLE QUOTATION MARK
+ {0x93, 0x201C}, // LEFT DOUBLE QUOTATION MARK
+ {0x94, 0x201D}, // RIGHT DOUBLE QUOTATION MARK
+ {0x95, 0x2022}, // BULLET
+ {0x96, 0x2013}, // EN DASH
+ {0x97, 0x2014}, // EM DASH
+ {0x99, 0x2122}, // TRADE MARK SIGN
+ {0x9A, 0x0459}, // CYRILLIC SMALL LETTER LJE
+ {0x9B, 0x203A}, // SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
+ {0x9C, 0x045A}, // CYRILLIC SMALL LETTER NJE
+ {0x9D, 0x045C}, // CYRILLIC SMALL LETTER KJE
+ {0x9E, 0x045B}, // CYRILLIC SMALL LETTER TSHE
+ {0x9F, 0x045F}, // CYRILLIC SMALL LETTER DZHE
+ {0xA0, 0x00A0}, // NO-BREAK SPACE
+ {0xA1, 0x040E}, // CYRILLIC CAPITAL LETTER SHORT U
+ {0xA2, 0x045E}, // CYRILLIC SMALL LETTER SHORT U
+ {0xA3, 0x0408}, // CYRILLIC CAPITAL LETTER JE
+ {0xA4, 0x00A4}, // CURRENCY SIGN
+ {0xA5, 0x0490}, // CYRILLIC CAPITAL LETTER GHE WITH UPTURN
+ {0xA6, 0x00A6}, // BROKEN BAR
+ {0xA7, 0x00A7}, // SECTION SIGN
+ {0xA8, 0x0401}, // CYRILLIC CAPITAL LETTER IO
+ {0xA9, 0x00A9}, // COPYRIGHT SIGN
+ {0xAA, 0x0404}, // CYRILLIC CAPITAL LETTER UKRAINIAN IE
+ {0xAB, 0x00AB}, // LEFT-POINTING DOUBLE ANGLE QUOTATION MARK
+ {0xAC, 0x00AC}, // NOT SIGN
+ {0xAD, 0x00AD}, // SOFT HYPHEN
+ {0xAE, 0x00AE}, // REGISTERED SIGN
+ {0xAF, 0x0407}, // CYRILLIC CAPITAL LETTER YI
+ {0xB0, 0x00B0}, // DEGREE SIGN
+ {0xB1, 0x00B1}, // PLUS-MINUS SIGN
+ {0xB2, 0x0406}, // CYRILLIC CAPITAL LETTER BYELORUSSIAN-UKRAINIAN I
+ {0xB3, 0x0456}, // CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I
+ {0xB4, 0x0491}, // CYRILLIC SMALL LETTER GHE WITH UPTURN
+ {0xB5, 0x00B5}, // MICRO SIGN
+ {0xB6, 0x00B6}, // PILCROW SIGN
+ {0xB7, 0x00B7}, // MIDDLE DOT
+ {0xB8, 0x0451}, // CYRILLIC SMALL LETTER IO
+ {0xB9, 0x2116}, // NUMERO SIGN
+ {0xBA, 0x0454}, // CYRILLIC SMALL LETTER UKRAINIAN IE
+ {0xBB, 0x00BB}, // RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK
+ {0xBC, 0x0458}, // CYRILLIC SMALL LETTER JE
+ {0xBD, 0x0405}, // CYRILLIC CAPITAL LETTER DZE
+ {0xBE, 0x0455}, // CYRILLIC SMALL LETTER DZE
+ {0xBF, 0x0457} // CYRILLIC SMALL LETTER YI
+};
+
+static void cp1251_to_utf8(char *out, const char *in, size_t len) {
static const int table[128] = {
0x82D0,0x83D0,0x9A80E2,0x93D1,0x9E80E2,0xA680E2,0xA080E2,0xA180E2,
0xAC82E2,0xB080E2,0x89D0,0xB980E2,0x8AD0,0x8CD0,0x8BD0,0x8FD0,
@@ -22,7 +91,7 @@ static void cp2utf1(char *out, const char *in) {
0x80D1,0x81D1,0x82D1,0x83D1,0x84D1,0x85D1,0x86D1,0x87D1,
0x88D1,0x89D1,0x8AD1,0x8BD1,0x8CD1,0x8DD1,0x8ED1,0x8FD1
};
- while (*in)
+ while (*in) {
if (*in & 0x80) {
int v = table[(int)(0x7f & *in++)];
if (!v)
@@ -31,75 +100,71 @@ static void cp2utf1(char *out, const char *in) {
*out++ = (char)(v >> 8);
if (v >>= 16)
*out++ = (char)v;
- }
- else
+ } else {
*out++ = *in++;
+ }
+ }
*out = 0;
}
-string cp2utf(string s) {
- int c,i;
- int len = s.size();
- string ns;
- for(i=0; i<len; i++) {
- c=s[i];
- char buf[4], in[2] = {0, 0};
- *in = c;
- cp2utf1(buf, in);
- ns+=string(buf);
+
+static int utf8_to_cp1251(const char* utf8, char* windows1251, size_t n) {
+ int i = 0;
+ int j = 0;
+ for(; i < (int)n && utf8[i] != 0; ++i) {
+ char prefix = utf8[i];
+ char suffix = utf8[i+1];
+ if ((prefix & 0x80) == 0) {
+ windows1251[j] = (char)prefix;
+ ++j;
+ } else if ((~prefix) & 0x20) {
+ int first5bit = prefix & 0x1F;
+ first5bit <<= 6;
+ int sec6bit = suffix & 0x3F;
+ int unicode_char = first5bit + sec6bit;
+
+ if ( unicode_char >= 0x410 && unicode_char <= 0x44F ) {
+ windows1251[j] = (char)(unicode_char - 0x350);
+ } else if (unicode_char >= 0x80 && unicode_char <= 0xFF) {
+ windows1251[j] = (char)(unicode_char);
+ } else if (unicode_char >= 0x402 && unicode_char <= 0x403) {
+ windows1251[j] = (char)(unicode_char - 0x382);
+ } else {
+ int count = sizeof(g_letters) / sizeof(Letter);
+ for (int k = 0; k < count; ++k) {
+ if (unicode_char == g_letters[k].unicode) {
+ windows1251[j] = g_letters[k].win1251;
+ goto NEXT_LETTER;
+ }
+ }
+ // can't convert this char
+ return 0;
+ }
+NEXT_LETTER:
+ ++i;
+ ++j;
+ } else {
+ // can't convert this chars
+ return 0;
+ }
}
- return ns;
+ windows1251[j] = 0;
+ return 1;
}
string utf2cp(string s) {
size_t len = s.size();
- const char *buff = s.c_str();
- char *output = new char[len];
- convert_utf8_to_windows1251(buff, output, len);
+ char* output = new char[len+1];
+ utf8_to_cp1251(s.c_str(), output, len);
string ns(output);
+ delete[] output;
return ns;
}
-int convert_utf8_to_windows1251(const char* utf8, char* windows1251, size_t n)
-{
- int i = 0;
- int j = 0;
- for(; i < (int)n && utf8[i] != 0; ++i) {
- char prefix = utf8[i];
- char suffix = utf8[i+1];
- if ((prefix & 0x80) == 0) {
- windows1251[j] = (char)prefix;
- ++j;
- } else if ((~prefix) & 0x20) {
- int first5bit = prefix & 0x1F;
- first5bit <<= 6;
- int sec6bit = suffix & 0x3F;
- int unicode_char = first5bit + sec6bit;
-
- if ( unicode_char >= 0x410 && unicode_char <= 0x44F ) {
- windows1251[j] = (char)(unicode_char - 0x350);
- } else if (unicode_char >= 0x80 && unicode_char <= 0xFF) {
- windows1251[j] = (char)(unicode_char);
- } else if (unicode_char >= 0x402 && unicode_char <= 0x403) {
- windows1251[j] = (char)(unicode_char - 0x382);
- } else {
- int count = sizeof(g_letters) / sizeof(Letter);
- for (int k = 0; k < count; ++k) {
- if (unicode_char == g_letters[k].unicode) {
- windows1251[j] = g_letters[k].win1251;
- goto NEXT_LETTER;
- }
- }
- // can't convert this char
- return 0;
- }
-NEXT_LETTER:
- ++i;
- ++j;
- } else {
- // can't convert this chars
- return 0;
- }
- }
- windows1251[j] = 0;
- return 1;
-} \ No newline at end of file
+string cp2utf(string s) {
+ size_t len = s.size();
+ char* output = new char[len*3+1];
+ cp1251_to_utf8(output, s.c_str(), len);
+ string ns(output);
+ delete[] output;
+ return ns;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-19 06:09:26 +0000