char *cartJsonOptionalParam(struct hash *paramHash, char *name)
/* Convenience function for a CartJsonHandler function: Look up name in paramHash.
* Return the string contained in its jsonElement value, or NULL if not found. */
{
struct jsonElement *jel = hashFindVal(paramHash, name);
if (jel)
return jsonStringVal(jel, name);
return NULL;
}
char *cartJsonParamDefault(struct hash *paramHash, char *name, char *defaultVal)
/* Convenience function for a CartJsonHandler function: Look up name in paramHash.
* Return the string contained in its jsonElement value, or defaultVal if not found. */
{
struct jsonElement *jel = hashFindVal(paramHash, name);
if (jel)
return jsonStringVal(jel, name);
return defaultVal;
}
static void setIfUnset(struct cartJson *cj, struct hash *paramHash)
/* For each name in paramHash, if that cart variable doesn't already have a non-empty
* value, set it to the value. */
{
struct hashCookie cookie = hashFirst(paramHash);
struct hashEl *hel;
while ((hel = hashNext(&cookie)) != NULL)
{
if (isEmpty(cartOptionalString(cj->cart, hel->name)))
{
char *val = jsonStringVal((struct jsonElement *)(hel->val), hel->name);
if (val)
cartSetString(cj->cart, hel->name, val);
}
}
}
