f0d08887b8
git-svn-id: http://svn.metaparadigm.com/svn/json-c/trunk@2 327403b1-1117-474d-bef2-5cb71233fd97
80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "bits.h"
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#include "debug.h"
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#include "printbuf.h"
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#include "json_object.h"
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#include "json_tokener.h"
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#include "json_util.h"
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struct json_object* json_object_from_file(char *filename)
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{
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struct printbuf *pb;
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struct json_object *obj;
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char buf[JSON_FILE_BUF_SIZE];
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int fd, ret;
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if((fd = open(filename, O_RDONLY)) < 0) {
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mc_error("json_object_from_file: error reading file %s: %s\n",
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filename, strerror(errno));
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return error_ptr(-1);
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}
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if(!(pb = printbuf_new())) {
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mc_error("json_object_from_file: printbuf_new failed\n");
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return error_ptr(-1);
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}
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while((ret = read(fd, buf, JSON_FILE_BUF_SIZE)) > 0) {
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printbuf_memappend(pb, buf, ret);
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}
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close(fd);
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if(ret < 0) {
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mc_abort("json_object_from_file: error reading file %s: %s\n",
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filename, strerror(errno));
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printbuf_free(pb);
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return error_ptr(-1);
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}
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obj = json_tokener_parse(pb->buf);
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printbuf_free(pb);
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return obj;
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}
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int json_object_to_file(char *filename, struct json_object *obj)
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{
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char *json_str;
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int fd, ret, wpos, wsize;
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if(!obj) {
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mc_error("json_object_to_file: object is null\n");
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return -1;
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}
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if((fd = open(filename, O_WRONLY | O_TRUNC | O_CREAT, 0644)) < 0) {
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mc_error("json_object_to_file: error opening file %s: %s\n",
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filename, strerror(errno));
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return -1;
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}
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if(!(json_str = json_object_to_json_string(obj))) return -1;
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wsize = strlen(json_str);
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wpos = 0;
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while(wpos < wsize) {
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if((ret = write(fd, json_str + wpos, wsize-wpos)) < 0) {
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close(fd);
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mc_error("json_object_to_file: error writing file %s: %s\n",
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filename, strerror(errno));
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return -1;
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}
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wpos += ret;
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}
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close(fd);
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return 0;
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}
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