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if (*tokend != 0 || errno)
goto failed;
} else {
v_int = strtoll(buf, &tokend, 10);
if (*tokend != 0 || errno || v_int < JSON_MININT || v_int > JSON_MAXINT)
goto failed;
}
/* create value struct */
jv = mk_value(ctx, type, 0, true);
if (!jv)
return false;
if (type == JSON_FLOAT) {
jv->u.v_float = v_float;
} else {
jv->u.v_int = v_int;
}
*src_p = src;
return true;
failed:
if (!errno)
errno = EINVAL;
return err_false(ctx, ""Number parse failed"");
}
/*
* String parsing
*/
static int parse_hex(const char *s, const char *end)
{
int v = 0, c, i, x;
if (s + 4 > end)
return -1;
for (i = 0; i < 4; i++) {
c = s[i];
if (c >= '0' && c <= '9') {
x = c - '0';
} else if (c >= 'a' && c <= 'f') {
x = c - 'a' + 10;
} else if (c >= 'A' && c <= 'F') {
x = c - 'A' + 10;
} else {
return -1;
}
v = (v << 4) | x;
}
return v;
}
/* process \uXXXX escapes, merge surrogates */
static bool parse_uescape(struct JsonContext *ctx, char **dst_p, char *dstend,
const char **src_p, const char *end)
{
int c, c2;
const char *src = *src_p;
c = parse_hex(src, end);
if (c <= 0)
return err_false(ctx, ""Invalid hex escape"");
src += 4;
if (c >= 0xD800 && c <= 0xDFFF) {
/* first surrogate */
if (c >= 0xDC00)
return err_false(ctx, ""Invalid UTF16 escape"");
if (src + 6 > end)
return err_false(ctx, ""Invalid UTF16 escape"");
/* second surrogate */
if (src[0] != '\\' || src[1] != 'u')
return err_false(ctx, ""Invalid UTF16 escape"");
c2 = parse_hex(src + 2, end);
if (c2 < 0xDC00 || c2 > 0xDFFF)
return err_false(ctx, ""Invalid UTF16 escape"");
c = 0x10000 + ((c & 0x3FF) << 10) + (c2 & 0x3FF);
src += 6;
}
/* now write char */
if (!utf8_put_char(c, dst_p, dstend))
return err_false(ctx, ""Invalid UTF16 escape"");
*src_p = src;
return true;
}
#define meta_string(c) (((c) == '""' || (c) == '\\' || (c) == '\0' || \
(c) == '\n' || ((c) & 0x80) != 0) ? 1 : 0)
static const uint8_t string_examine_chars[] = INTMAP256_CONST(meta_string);
/* look for string end, validate contents */
static bool scan_string(struct JsonContext *ctx, const char *src, const char *end,
const char **str_end_p, bool *hasesc_p, int64_t *nlines_p)
{
bool hasesc = false;
int64_t lines = 0;
unsigned int n;
bool check_utf8 = true;