LCOV - code coverage report
Current view: directory - ogr/ogrsf_frmts/geojson/jsonc - json_util.c (source / functions) Found Hit Coverage
Test: gdal_filtered.info Lines: 36 0 0.0 %
Date: 2010-01-09 Functions: 2 0 0.0 %

       1                 : /*
       2                 :  * $Id: json_util.c,v 1.4 2006/01/30 23:07:57 mclark Exp $
       3                 :  *
       4                 :  * Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd.
       5                 :  * Michael Clark <michael@metaparadigm.com>
       6                 :  *
       7                 :  * This library is free software; you can redistribute it and/or modify
       8                 :  * it under the terms of the MIT license. See COPYING for details.
       9                 :  *
      10                 :  */
      11                 : 
      12                 : /* Excluded from GDAL for Windows CE port. */
      13                 : #ifndef _WIN32_WCE
      14                 : 
      15                 : #include "config.h"
      16                 : 
      17                 : #include <stdio.h>
      18                 : #include <stdlib.h>
      19                 : #include <limits.h>
      20                 : #include <string.h>
      21                 : #include <errno.h>
      22                 : 
      23                 : #if HAVE_SYS_TYPES_H
      24                 : #include <sys/types.h>
      25                 : #endif /* HAVE_SYS_TYPES_H */
      26                 : 
      27                 : #if HAVE_SYS_STAT_H
      28                 : #include <sys/stat.h>
      29                 : #endif /* HAVE_SYS_STAT_H */
      30                 : 
      31                 : #if HAVE_FCNTL_H
      32                 : #include <fcntl.h>
      33                 : #endif /* HAVE_FCNTL_H */
      34                 : 
      35                 : #if HAVE_UNISTD_H
      36                 : # include <unistd.h>
      37                 : #endif /* HAVE_UNISTD_H */
      38                 : 
      39                 : #ifdef _WIN32
      40                 : # define WIN32_LEAN_AND_MEAN
      41                 : # include <windows.h>
      42                 : # include <io.h>
      43                 : #endif /* defined(WIN32) */
      44                 : 
      45                 : #if !HAVE_OPEN && defined(WIN32)
      46                 : # define open _open
      47                 : #endif
      48                 : 
      49                 : 
      50                 : #include "bits.h"
      51                 : #include "debug.h"
      52                 : #include "printbuf.h"
      53                 : #include "json_object.h"
      54                 : #include "json_tokener.h"
      55                 : #include "json_util.h"
      56                 : 
      57               0 : struct json_object* json_object_from_file(char *filename)
      58                 : {
      59                 :   struct printbuf *pb;
      60                 :   struct json_object *obj;
      61                 :   char buf[JSON_FILE_BUF_SIZE];
      62                 :   int fd, ret;
      63                 : 
      64               0 :   if((fd = open(filename, O_RDONLY)) < 0) {
      65               0 :     mc_error("json_object_from_file: error reading file %s: %s\n",
      66                 :        filename, strerror(errno));
      67               0 :     return error_ptr(-1);
      68                 :   }
      69               0 :   if((pb = printbuf_new()) == NULL) {
      70               0 :     mc_error("json_object_from_file: printbuf_new failed\n");
      71               0 :     return error_ptr(-1);
      72                 :   }
      73               0 :   while((ret = read(fd, buf, JSON_FILE_BUF_SIZE)) > 0) {
      74               0 :     printbuf_memappend(pb, buf, ret);
      75                 :   }
      76               0 :   close(fd);
      77               0 :   if(ret < 0) {
      78               0 :     mc_abort("json_object_from_file: error reading file %s: %s\n",
      79                 :        filename, strerror(errno));
      80               0 :     printbuf_free(pb);
      81               0 :     return error_ptr(-1);
      82                 :   }
      83               0 :   obj = json_tokener_parse(pb->buf);
      84               0 :   printbuf_free(pb);
      85               0 :   return obj;
      86                 : }
      87                 : 
      88               0 : int json_object_to_file(char *filename, struct json_object *obj)
      89                 : {
      90                 :   char *json_str;
      91                 :   int fd, ret;
      92                 :   unsigned int wpos, wsize;
      93                 : 
      94               0 :   if(!obj) {
      95               0 :     mc_error("json_object_to_file: object is null\n");
      96               0 :     return -1;
      97                 :   }
      98                 : 
      99               0 :   if((fd = open(filename, O_WRONLY | O_TRUNC | O_CREAT, 0644)) < 0) {
     100               0 :     mc_error("json_object_to_file: error opening file %s: %s\n",
     101                 :        filename, strerror(errno));
     102               0 :     return -1;
     103                 :   }
     104                 : 
     105               0 :   if((json_str = json_object_to_json_string(obj)) == NULL) {
     106               0 :       return -1;
     107                 :   }
     108                 : 
     109                 : 
     110               0 :   wsize = (unsigned int)(strlen(json_str) & UINT_MAX); /* CAW: probably unnecessary, but the most 64bit safe */
     111               0 :   wpos = 0;
     112               0 :   while(wpos < wsize) {
     113               0 :     if((ret = write(fd, json_str + wpos, wsize-wpos)) < 0) {
     114               0 :       close(fd);
     115               0 :       mc_error("json_object_to_file: error writing file %s: %s\n",
     116                 :        filename, strerror(errno));
     117               0 :       return -1;
     118                 :     }
     119                 : 
     120                 :   /* because of the above check for ret < 0, we can safely cast and add */
     121               0 :     wpos += (unsigned int)ret;
     122                 :   }
     123                 : 
     124               0 :   close(fd);
     125               0 :   return 0;
     126                 : }
     127                 : 
     128                 : #endif
     129                 : 

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