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#include "mbstring.h"
#include <cstring>
#include <locale>
#include "errno.h"
#include "global.h"
extern void __msl_runtime_constraint_violation_s(const char* msg, void* ptr, int error);
static unsigned int is_utf8_complete(const char* buf, unsigned int len) {
char start_byte;
int checked_cnt;
int conts;
int rem_conts;
if (len == 0) {
return -1;
}
start_byte = buf[0];
if (start_byte == 0) {
return 0;
}
if ((start_byte & 0x80) == 0) {
return 1;
}
if ((start_byte & 0xe0) == 0xc0) {
conts = 1;
} else if ((start_byte & 0xf0) == 0xe0) {
conts = 2;
} else if ((start_byte & 0xf8) == 0xf0) {
conts = 3;
} else if ((start_byte & 0xfc) == 0xf8) {
conts = 4;
} else if ((start_byte & 0xfe) == 0xfc) {
conts = 5;
} else {
return 0xffffffff;
}
checked_cnt = 0;
for (rem_conts = conts; rem_conts > 0; rem_conts--) {
if ((buf[checked_cnt + 1] & 0xc0) != 0x80) {
return 0xffffffff;
}
checked_cnt++;
}
if (len >= checked_cnt + 1U) {
return conts + 1;
}
return 0xfffffffe;
}
static int __utf8_to_unicode(wchar_t* dst, const char* src, unsigned int len) {
short byte_cnt;
int remaining;
int codepoint;
codepoint = 0;
if (src == NULL) {
return 0;
}
if (len == 0) {
return -1;
}
byte_cnt = is_utf8_complete(src, len);
if (byte_cnt < 0) {
return -1;
}
switch (byte_cnt) {
case 6:
codepoint = *src & ((1 << 2) - 1);
break;
case 5:
codepoint = *src & ((1 << 3) - 1);
break;
case 4:
codepoint = *src & ((1 << 4) - 1);
break;
case 3:
codepoint = *src & ((1 << 5) - 1);
break;
case 2:
codepoint = *src & ((1 << 6) - 1);
break;
case 1:
codepoint = *src;
break;
}
for (remaining = byte_cnt - 1; remaining > 0; remaining--) {
codepoint <<= 6;
codepoint |= *++src & 0x7f;
}
if (codepoint == 0) {
remaining = 0;
} else if (codepoint < 0 || codepoint < 0x80) {
remaining = 1;
} else if (codepoint < 0x800) {
remaining = 2;
} else if (codepoint < 0x10000) {
remaining = 3;
} else if (codepoint < 0x200000) {
remaining = 4;
} else if (codepoint < 0x4000000) {
remaining = 5;
} else {
remaining = 6;
}
if (remaining != byte_cnt) {
return -1;
}
if (dst != NULL) {
*dst = codepoint;
}
return byte_cnt;
}
#if !PLATFORM_GCN
int mbtowc(wchar_t* pwc, const char* s, size_t n) {
return _current_locale.ctype_cmpt_ptr->decode_mb(pwc, s, n);
}
#endif
inline static int unicode_to_UTF8(char* s, wchar_t wchar) {
int number_of_bytes;
wchar_t wide_char;
char* target_ptr;
char first_byte_mark[4] = { 0x00, 0x00, 0xc0, 0xe0 };
if (!s)
return (0);
wide_char = wchar;
if (wide_char < 0x0080)
number_of_bytes = 1;
else if (wide_char < 0x0800)
number_of_bytes = 2;
else
number_of_bytes = 3;
target_ptr = s + number_of_bytes;
switch (number_of_bytes) {
case 3:
*--target_ptr = (wide_char & 0x003f) | 0x80;
wide_char >>= 6;
case 2:
*--target_ptr = (wide_char & 0x003f) | 0x80;
wide_char >>= 6;
case 1:
*--target_ptr = wide_char | first_byte_mark[number_of_bytes];
}
return number_of_bytes;
}
int __mbtowc_noconv(wchar_t* pwc, const char* s, size_t n) {
if (!s)
return 0;
if (!n)
return -1;
if (pwc)
*pwc = (unsigned char)*s;
if (!*s)
return(0);
return 1;
}
int __wctomb_noconv(char* s, wchar_t wchar) {
if (!s)
return 0;
*s = wchar;
return 1;
}
int mbstowcs(wchar_t* param_0, const char* param_1, int param_2) {
unsigned int i;
int decoded_cnt;
int remaining = strlen(param_1);
if (param_0 != NULL) {
for (i = 0; i < param_2; i++) {
if (param_1[0] != '\0') {
decoded_cnt =
_current_locale.ctype_cmpt_ptr->decode_mb(param_0++, param_1, remaining);
if (decoded_cnt > 0) {
param_1 += decoded_cnt;
remaining -= decoded_cnt;
continue;
}
return -1;
}
param_0[0] = L'\0';
break;
}
} else {
i = 0;
}
return i;
}
int wctomb(char* s, wchar_t wchar) {
#if PLATFORM_GCN
return (unicode_to_UTF8(s, wchar));
#else
return _current_locale.ctype_cmpt_ptr->encode_wc(s, wchar);
#endif
}
size_t wcstombs(char* s, const wchar_t* pwcs, size_t n) {
int chars_written = 0;
int result;
char temp[3];
wchar_t* source;
if (!s || !pwcs)
return (0);
source = (wchar_t*)pwcs;
while (chars_written <= n) {
if (!*source) {
*(s + chars_written) = '\0';
break;
} else {
result = wctomb(temp, *source++);
if ((chars_written + result) <= n) {
strncpy(s + chars_written, temp, result);
chars_written += result;
} else
break;
}
}
return chars_written;
}
int mbsrtowcs_s(size_t* retval, wchar_t* dst, unsigned int dstsz, const char** param_4,
size_t len, int param_6) {
wchar_t* var_r27;
const char* var_r24;
unsigned int var_r25;
int var_r26;
wchar_t sp08[4];
if (retval == NULL || param_4 == NULL || *param_4 == NULL || param_6 == 0 ||
(dst != NULL && (len > 0x7fffffff || dstsz > 0x7fffffff || dstsz < len)))
{
__msl_runtime_constraint_violation_s(NULL, NULL, 0x22);
if (retval != NULL) {
*retval = 0xffffffff;
}
return 0x22;
}
var_r24 = *param_4;
var_r26 = strlen(var_r24);
for (var_r25 = 0; var_r25 < len; var_r25++) {
if (*var_r24 != '\0') {
int var_r3_1;
if (dst == NULL) {
var_r27 = sp08;
} else {
var_r27 = dst++;
}
if (var_r24 != NULL) {
var_r3_1 = is_utf8_complete(var_r24, var_r26);
if (var_r3_1 < 0xfffffffe) {
if (var_r27 != NULL) {
var_r3_1 = __utf8_to_unicode(var_r27, var_r24, var_r26);
} else if (var_r3_1 == 0xffffffff) {
errno = 0x58;
}
}
} else {
if (var_r27 != NULL) {
*var_r27 = L'\0';
}
var_r3_1 = 0;
}
if (var_r3_1 <= 0) {
break;
}
var_r24 += var_r3_1;
var_r26 -= var_r3_1;
} else {
if (dst != NULL) {
*dst = 0;
*param_4 = 0;
}
break;
}
}
*retval = var_r25;
return 0;
}
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