static inline char *pcs_http_get_charset_from_header(const char *header, int size)
{
char *res = NULL;
const char *p = header, *key = "charset",
*end = NULL,
*tmp;
int i = 7;//strlen(key) = 7;
while (*p) {
if (*p == key[0] && pcs_utils_streq(p, key, i)) {
tmp = p + i;
if (*tmp != '=') continue; tmp++;
end = tmp;
while (*end && PCS_IS_TOKEN_CHAR(*end)) end++;
if (end > tmp) {
res = (char *)pcs_malloc(end - tmp + 1);
memcpy(res, tmp, end - tmp);
res[end - tmp] = '\0';
break;
}
}
p++;
}
return res;
}
/*从URL地址的QueryString中解析出类似于 &token=abc_ef-g&a= 的值。此例中，key传入"&token"，将返回abc_ef-g*/
static char *pcs_get_embed_query_token_by_key(const char *html, const char *key)
{
char *val = NULL;
const char *p = html,
*end = NULL,
*tmp;
int i = strlen(key);// \f\n\r\t\v
while (*p) {
if (*p == key[0] && pcs_utils_streq(p, key, i)) {
tmp = p + i;
if (*tmp != '=') continue; tmp++;
end = tmp;
while (*end && PCS_IS_TOKEN_CHAR(*end)) end++;
if (end > tmp) {
val = (char *)pcs_malloc(end - tmp + 1);
memcpy(val, tmp, end - tmp);
val[end - tmp] = '\0';
return val;
}
}
p++;
}
return val;
}