mirror of https://github.com/DaveGamble/cJSON
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/*
|
|
Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
*/
|
|
|
|
#include "common.h"
|
|
|
|
CJSON_PUBLIC(void) reset(cJSON *item)
|
|
{
|
|
if ((item != NULL) && (item->child != NULL))
|
|
{
|
|
cJSON_Delete(item->child);
|
|
}
|
|
if ((item->valuestring != NULL) && !(item->type & cJSON_IsReference))
|
|
{
|
|
global_hooks.deallocate(item->valuestring);
|
|
}
|
|
if ((item->string != NULL) && !(item->type & cJSON_StringIsConst))
|
|
{
|
|
global_hooks.deallocate(item->string);
|
|
}
|
|
|
|
memset(item, 0, sizeof(cJSON));
|
|
}
|
|
|
|
CJSON_PUBLIC(char*) read_file(const char *filename)
|
|
{
|
|
FILE *file = NULL;
|
|
long length = 0;
|
|
char *content = NULL;
|
|
size_t read_chars = 0;
|
|
|
|
/* open in read binary mode */
|
|
file = fopen(filename, "rb");
|
|
if (file == NULL)
|
|
{
|
|
goto cleanup;
|
|
}
|
|
|
|
/* get the length */
|
|
if (fseek(file, 0, SEEK_END) != 0)
|
|
{
|
|
goto cleanup;
|
|
}
|
|
length = ftell(file);
|
|
if (length < 0)
|
|
{
|
|
goto cleanup;
|
|
}
|
|
if (fseek(file, 0, SEEK_SET) != 0)
|
|
{
|
|
goto cleanup;
|
|
}
|
|
|
|
/* allocate content buffer */
|
|
content = (char*)malloc((size_t)length + sizeof(""));
|
|
if (content == NULL)
|
|
{
|
|
goto cleanup;
|
|
}
|
|
|
|
/* read the file into memory */
|
|
read_chars = fread(content, sizeof(char), (size_t)length, file);
|
|
if ((long)read_chars != length)
|
|
{
|
|
free(content);
|
|
content = NULL;
|
|
goto cleanup;
|
|
}
|
|
content[read_chars] = '\0';
|
|
|
|
|
|
cleanup:
|
|
if (file != NULL)
|
|
{
|
|
fclose(file);
|
|
}
|
|
|
|
return content;
|
|
}
|