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/**
* ucs.c
*/
#include <stdio.h>
#include <stddef.h>
#include "ucs.h"
u32 beucs2(u16 *ucs2) {
u16 ch;
u16 *ptr;
u32 len;
ptr = ucs2;
len = 0;
while ((ch = be16((u8*)ptr)) != 0) {
*ptr = ch;
ptr++;
len++;
}
return len;
}
u32 ucs2len(u16 *ucs2) {
u32 len = 0;
while (ucs2[len] != 0) {
len++;
}
return len;
}
char firstByteMark[7] = {0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC};
/* Convert UCS-2 string to UTF-8 */
void print_ucs2_as_utf8(u16 *ucs2) {
const u32 byteMask = 0xBF;
const u32 byteMark = 0x80;
u32 blen = 0;
u32 i = 0;
u16 *ptr_ucs;
u16 ch;
char utf8[8]= {0,0,0,0,0,0,0,0};
ptr_ucs = ucs2;
while (*ptr_ucs != 0) {
ch = *ptr_ucs;
if (ch < 0x80) {
blen = 1;
} else if (ch < 0x800) {
blen = 2;
} else {
blen = 3;
}
i = blen;
utf8[i--] = 0;
switch (blen) {
case 3: utf8[i--] = ((ch | byteMark) & byteMask); ch >>= 6;
case 2: utf8[i--] = ((ch | byteMark) & byteMask); ch >>= 6;
case 1: utf8[i--] = (ch | firstByteMark[blen]);
}
fwrite(utf8, blen, 1, stdout);
ptr_ucs++;
}
}
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