1 /*
2  * Copyright (C) 2020 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include "ExpandableString.h"
18 
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
22 
23 void ExpandableStringInitialize(struct ExpandableString *s) {
24     memset(s, 0, sizeof(*s));
25 }
26 
27 void ExpandableStringRelease(struct ExpandableString* s) {
28     free(s->data);
29     memset(s, 0, sizeof(*s));
30 }
31 
32 bool ExpandableStringAppend(struct ExpandableString* s, const char* text) {
33     size_t textSize = strlen(text);
34     size_t requiredSize = s->dataSize + textSize + 1;
35     char* data = (char*) realloc(s->data, requiredSize);
36     if (data == NULL) {
37         return false;
38     }
39     s->data = data;
40     memcpy(s->data + s->dataSize, text, textSize + 1);
41     s->dataSize += textSize;
42     return true;
43 }
44 
45 bool ExpandableStringAssign(struct ExpandableString* s, const char* text) {
46     ExpandableStringRelease(s);
47     return ExpandableStringAppend(s, text);
48 }