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MIN12352
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codeparrot

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if (ctx->options & JSON_PARSE_IGNORE_ENCODING)
check_utf8 = false;
while (src < end) {
if (!string_examine_chars[(uint8_t)*src]) {
src++;
} else if (*src == '""') {
/* string end */
*hasesc_p = hasesc;
*str_end_p = src;
*nlines_p = lines;
return true;
} else if (*src == '\\') {
hasesc = true;
src++;
if (src < end && (*src == '\\' || *src == '""'))
src++;
} else if (*src & 0x80) {
n = utf8_validate_seq(src, end);
if (n) {
src += n;
} else if (check_utf8) {
goto badutf;
} else {
src++;
}
} else if (*src == '\n') {
lines++;
src++;
} else {
goto badutf;
}
}
return err_false(ctx, ""Unexpected end of string"");
badutf:
return err_false(ctx, ""Invalid UTF8 sequence"");
}
/* string boundaries are known, copy and unescape */
static char *process_escapes(struct JsonContext *ctx,
const char *src, const char *end,
char *dst, char *dstend)
{
const char *esc;
/* process escapes */
while (src < end) {
esc = memchr(src, '\\', end - src);
if (!esc) {
dst = plain_copy(dst, src, end);
break;
}
dst = plain_copy(dst, src, esc);
src = esc + 1;
switch (*src++) {
case '""': *dst++ = '""'; break;
case '\\': *dst++ = '\\'; break;
case '/': *dst++ = '/'; break;
case 'b': *dst++ = '\b'; break;
case 'f': *dst++ = '\f'; break;
case 'n': *dst++ = '\n'; break;
case 'r': *dst++ = '\r'; break;
case 't': *dst++ = '\t'; break;
case 'u':
if (!parse_uescape(ctx, &dst, dstend, &src, end))
return NULL;
break;
default:
return err_null(ctx, ""Invalid escape code"");
}
}
return dst;
}
/* 2-phase string processing */
static bool parse_string(struct JsonContext *ctx, const char **src_p, const char *end)
{
const char *start, *strend = NULL;
bool hasesc = false;
char *dst, *dstend;
size_t len;
struct JsonValue *jv;
int64_t lines = 0;
/* find string boundaries, validate */
start = *src_p;
if (!scan_string(ctx, start, end, &strend, &hasesc, &lines))
return false;
/* create value struct */
len = strend - start;
jv = mk_value(ctx, JSON_STRING, len + 1, true);
if (!jv)
return false;
dst = get_cstring(jv);
dstend = dst + len;
/* copy & process escapes */