milsko/src/string.c

113 lines
3 KiB
C
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#include <Mw/Milsko.h>
char* MwStringDuplicate(const char* str) {
char* r = malloc(strlen(str) + 1);
strcpy(r, str);
return r;
}
char* MwStringConcat(const char* str1, const char* str2) {
char* r = malloc(strlen(str1) + strlen(str2) + 1);
strcpy(r, str1);
strcat(r, str2);
return r;
}
void MwStringSize(char* out, MwOffset size) {
if(size / 1024 == 0) {
sprintf(out, "%d", (int)size);
} else if(size / 1024 / 1024 == 0) {
sprintf(out, "%.1fK", (double)size / 1024);
} else if(size / 1024 / 1024 / 1024 == 0) {
sprintf(out, "%.1fM", (double)size / 1024 / 1024);
} else {
sprintf(out, "%.1fG", (double)size / 1024 / 1024 / 1024);
}
}
void MwStringTime(char* out, time_t t) {
struct tm* tm = localtime(&t);
const char* months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
if(tm == NULL) {
sprintf(out, "localtime error");
} else {
sprintf(out, "%s %2d %02d:%02d %d", months[tm->tm_mon], tm->tm_mday, tm->tm_hour, tm->tm_min, 1900 + tm->tm_year);
}
}
void MwStringPrintIntoBuffer(char* out, MwU32 size, const char* fmt, ...) {
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va_list va;
va_start(va, fmt);
#if __STDC_VERSION__ >= 199901L
vsnprintf(out, size, fmt, va);
#else
vsprintf(out, fmt, va);
#endif
va_end(va);
};
MWDECL MwBool MwStringIsKeyUTF8(MwU32 key) {
unsigned char bytes[sizeof(MwU32)];
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int i;
memcpy(bytes, &key, sizeof(MwU32));
for(i = 0; i < sizeof(MwU32); i++) {
if(( // ASCII
// use bytes[0] <= 0x7F to allow ASCII control characters
bytes[0] == 0x09 ||
bytes[0] == 0x0A ||
bytes[0] == 0x0D ||
(0x20 <= bytes[0] && bytes[0] <= 0x7E))) {
continue;
}
if(( // non-overlong 2-byte
(0xC2 <= bytes[0] && bytes[0] <= 0xDF) &&
(0x80 <= bytes[1] && bytes[1] <= 0xBF))) {
continue;
}
if(( // excluding overlongs
bytes[0] == 0xE0 &&
(0xA0 <= bytes[1] && bytes[1] <= 0xBF) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF)) ||
( // straight 3-byte
((0xE1 <= bytes[0] && bytes[0] <= 0xEC) ||
bytes[0] == 0xEE ||
bytes[0] == 0xEF) &&
(0x80 <= bytes[1] && bytes[1] <= 0xBF) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF)) ||
( // excluding surrogates
bytes[0] == 0xED &&
(0x80 <= bytes[1] && bytes[1] <= 0x9F) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF))) {
continue;
}
if(( // planes 1-3
bytes[0] == 0xF0 &&
(0x90 <= bytes[1] && bytes[1] <= 0xBF) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF) &&
(0x80 <= bytes[3] && bytes[3] <= 0xBF)) ||
( // planes 4-15
(0xF1 <= bytes[0] && bytes[0] <= 0xF3) &&
(0x80 <= bytes[1] && bytes[1] <= 0xBF) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF) &&
(0x80 <= bytes[3] && bytes[3] <= 0xBF)) ||
( // plane 16
bytes[0] == 0xF4 &&
(0x80 <= bytes[1] && bytes[1] <= 0x8F) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF) &&
(0x80 <= bytes[3] && bytes[3] <= 0xBF))) {
continue;
}
return 0;
}
return 1;
}