mirror of
https://github.com/DaveGamble/cJSON
synced 2024-12-24 15:42:07 +00:00
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/*
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Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#include "common.h"
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CJSON_PUBLIC(void) reset(cJSON *item)
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{
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if ((item != NULL) && (item->child != NULL))
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{
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cJSON_Delete(item->child);
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}
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if ((item->valuestring != NULL) && !(item->type & cJSON_IsReference))
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{
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global_hooks.deallocate(item->valuestring);
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}
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if ((item->string != NULL) && !(item->type & cJSON_StringIsConst))
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{
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global_hooks.deallocate(item->string);
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}
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memset(item, 0, sizeof(cJSON));
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}
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CJSON_PUBLIC(char*) read_file(const char *filename)
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{
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FILE *file = NULL;
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long length = 0;
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char *content = NULL;
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size_t read_chars = 0;
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/* open in read binary mode */
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file = fopen(filename, "rb");
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if (file == NULL)
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{
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goto cleanup;
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}
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/* get the length */
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if (fseek(file, 0, SEEK_END) != 0)
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{
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goto cleanup;
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}
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length = ftell(file);
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if (length < 0)
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{
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goto cleanup;
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}
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if (fseek(file, 0, SEEK_SET) != 0)
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{
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goto cleanup;
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}
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/* allocate content buffer */
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content = (char*)malloc((size_t)length + sizeof(""));
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if (content == NULL)
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{
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goto cleanup;
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}
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/* read the file into memory */
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read_chars = fread(content, sizeof(char), (size_t)length, file);
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if ((long)read_chars != length)
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{
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free(content);
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content = NULL;
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goto cleanup;
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}
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content[read_chars] = '\0';
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cleanup:
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if (file != NULL)
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{
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fclose(file);
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}
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return content;
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}
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