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Add mg_json_get_hex(), mg_json_get_b64()

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Sergey Lyubka committed 2022-06-22 16:28:22 +01:00
1 parent a68f3dc4eb
commit 898e2b1e30
6 files changed
+117 -2
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src/json.c
+26
View File
@@ -1,4 +1,5 @@
#include "json.h"
#include "base64.h"
static const char *escapeseq(int esc) {
return esc ? "\b\f\n\r\t\\\"" : "bfnrt\\\"";
@@ -219,3 +220,28 @@ char *mg_json_get_str(struct mg_str json, const char *path) {
}
return result;
}
char *mg_json_get_b64(struct mg_str json, const char *path, int *len) {
int n, toklen;
char *result = NULL;
if ((n = mg_json_get(json.ptr, (int) json.len, path, &toklen)) >= 0 &&
json.ptr[n] == '"' && toklen > 1 &&
(result = (char *) calloc(1, (size_t) toklen)) != NULL) {
int k = mg_base64_decode(json.ptr + n + 1, toklen - 2, result);
if (len != NULL) *len = k;
}
return result;
}
char *mg_json_get_hex(struct mg_str json, const char *path, int *len) {
int n, toklen;
char *result = NULL;
if ((n = mg_json_get(json.ptr, (int) json.len, path, &toklen)) >= 0 &&
json.ptr[n] == '"' && toklen > 1 &&
(result = (char *) calloc(1, (size_t) toklen / 2)) != NULL) {
mg_unhex(json.ptr + n + 1, (size_t) (toklen - 2), (uint8_t *) result);
result[(toklen - 2) / 2] = '\0';
if (len != NULL) *len = (toklen - 2) / 2;
}
return result;
}