mimil owns / aJSON

aJson is the attempt to port a complete JSON implementation to Arduino. It is based on the cJSON implementation, reduced in size and removing one or two feature. The current mbed implementation only supports FILE* as input so you will have to use a temporary file for parsing your json input. https://github.com/interactive-matter/aJson

Dependents:   WIZwikiREST20

utility/streamhelper.c@1:6df1d1f1b372, 2012-08-28 (annotated)

Committer:
mimil
Date:
Tue Aug 28 08:16:29 2012 +0000
Revision:
1:6df1d1f1b372
Parent:
0:428cf9a51873 
first release of aJSON library for mbed

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mimil 1:6df1d1f1b372 1 /*
mimil 1:6df1d1f1b372 2 * aJson
mimil 1:6df1d1f1b372 3 * streamhelper.c
mimil 1:6df1d1f1b372 4 *
mimil 1:6df1d1f1b372 5 * http://interactive-matter.org/
mimil 1:6df1d1f1b372 6 *
mimil 1:6df1d1f1b372 7 * This file is part of aJson.
mimil 1:6df1d1f1b372 8 *
mimil 1:6df1d1f1b372 9 * aJson is free software: you can redistribute it and/or modify
mimil 1:6df1d1f1b372 10 * it under the terms of the GNU General Public License as published by
mimil 1:6df1d1f1b372 11 * the Free Software Foundation, either version 3 of the License, or
mimil 1:6df1d1f1b372 12 * (at your option) any later version.
mimil 1:6df1d1f1b372 13 *
mimil 1:6df1d1f1b372 14 * aJson is distributed in the hope that it will be useful,
mimil 1:6df1d1f1b372 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
mimil 1:6df1d1f1b372 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
mimil 1:6df1d1f1b372 17 * GNU General Public License for more details.
mimil 1:6df1d1f1b372 18 * You should have received a copy of the GNU General Public License
mimil 1:6df1d1f1b372 19 * along with aJson. If not, see <http://www.gnu.org/licenses/>.
mimil 1:6df1d1f1b372 20 *
mimil 1:6df1d1f1b372 21 * Created on: 10.10.2010
mimil 1:6df1d1f1b372 22 * Author: marcus
mimil 1:6df1d1f1b372 23 */
mimil 1:6df1d1f1b372 24 #include <stdio.h>
mimil 1:6df1d1f1b372 25 #include <stdlib.h>
mimil 1:6df1d1f1b372 26 #include "streamhelper.h"
mimil 1:6df1d1f1b372 27 #include "stringbuffer.h"
mimil 1:6df1d1f1b372 28
mimil 1:6df1d1f1b372 29 //internal prototypes
mimil 1:6df1d1f1b372 30 int
mimil 1:6df1d1f1b372 31 stringGet(FILE* stream);
mimil 1:6df1d1f1b372 32 int
mimil 1:6df1d1f1b372 33 stringPut(char c, FILE* stream);
mimil 1:6df1d1f1b372 34
mimil 1:6df1d1f1b372 35 typedef struct
mimil 1:6df1d1f1b372 36 {
mimil 1:6df1d1f1b372 37 char* string;
mimil 1:6df1d1f1b372 38 unsigned int position;
mimil 1:6df1d1f1b372 39 } string_input_stream_info;
mimil 1:6df1d1f1b372 40
mimil 1:6df1d1f1b372 41 /*FILE*
mimil 1:6df1d1f1b372 42 openStringInputStream(char* string)
mimil 1:6df1d1f1b372 43 {
mimil 1:6df1d1f1b372 44 FILE* result = fdevopen(NULL, &stringGet);
mimil 1:6df1d1f1b372 45 if (result == NULL)
mimil 1:6df1d1f1b372 46 {
mimil 1:6df1d1f1b372 47 return NULL;
mimil 1:6df1d1f1b372 48 }
mimil 1:6df1d1f1b372 49 string_input_stream_info* udata = malloc(sizeof(string_input_stream_info));
mimil 1:6df1d1f1b372 50 if (udata != NULL)
mimil 1:6df1d1f1b372 51 {
mimil 1:6df1d1f1b372 52 udata->string = string;
mimil 1:6df1d1f1b372 53 udata->position = 0;
mimil 1:6df1d1f1b372 54 fdev_set_udata(result,udata);
mimil 1:6df1d1f1b372 55 }
mimil 1:6df1d1f1b372 56 else
mimil 1:6df1d1f1b372 57 {
mimil 1:6df1d1f1b372 58 fclose(result);
mimil 1:6df1d1f1b372 59 return NULL;
mimil 1:6df1d1f1b372 60 }
mimil 1:6df1d1f1b372 61 return result;
mimil 1:6df1d1f1b372 62 }*/
mimil 1:6df1d1f1b372 63
mimil 1:6df1d1f1b372 64 /*void
mimil 1:6df1d1f1b372 65 closeStringInputStream(FILE* stream)
mimil 1:6df1d1f1b372 66 {
mimil 1:6df1d1f1b372 67 if (stream == NULL)
mimil 1:6df1d1f1b372 68 {
mimil 1:6df1d1f1b372 69 return;
mimil 1:6df1d1f1b372 70 }
mimil 1:6df1d1f1b372 71 string_input_stream_info* udata =
mimil 1:6df1d1f1b372 72 (string_input_stream_info*) fdev_get_udata(stream);
mimil 1:6df1d1f1b372 73 if (udata != NULL)
mimil 1:6df1d1f1b372 74 {
mimil 1:6df1d1f1b372 75 free(udata);
mimil 1:6df1d1f1b372 76 }
mimil 1:6df1d1f1b372 77 fdev_set_udata(stream,NULL);
mimil 1:6df1d1f1b372 78 fclose(stream);
mimil 1:6df1d1f1b372 79 }*/
mimil 1:6df1d1f1b372 80
mimil 1:6df1d1f1b372 81 /*FILE*
mimil 1:6df1d1f1b372 82 openStringOutputStream(void)
mimil 1:6df1d1f1b372 83 {
mimil 1:6df1d1f1b372 84 FILE* result = fdevopen(&stringPut, NULL);
mimil 1:6df1d1f1b372 85 if (result == NULL)
mimil 1:6df1d1f1b372 86 {
mimil 1:6df1d1f1b372 87 return NULL;
mimil 1:6df1d1f1b372 88 }
mimil 1:6df1d1f1b372 89 string_buffer* buffer = stringBufferCreate();
mimil 1:6df1d1f1b372 90 if (buffer == NULL)
mimil 1:6df1d1f1b372 91 {
mimil 1:6df1d1f1b372 92 fclose(result);
mimil 1:6df1d1f1b372 93 return NULL;
mimil 1:6df1d1f1b372 94 }
mimil 1:6df1d1f1b372 95 fdev_set_udata(result,buffer);
mimil 1:6df1d1f1b372 96 return result;
mimil 1:6df1d1f1b372 97 }*/
mimil 1:6df1d1f1b372 98
mimil 1:6df1d1f1b372 99 /*char*
mimil 1:6df1d1f1b372 100 closeStringOutputStream(FILE* stream)
mimil 1:6df1d1f1b372 101 {
mimil 1:6df1d1f1b372 102 //write a 0 to the end - that is how a string looks like
mimil 1:6df1d1f1b372 103 string_buffer* buffer = (string_buffer*) fdev_get_udata(stream);
mimil 1:6df1d1f1b372 104 char* result = stringBufferToString(buffer);
mimil 1:6df1d1f1b372 105 if (result == NULL)
mimil 1:6df1d1f1b372 106 {
mimil 1:6df1d1f1b372 107 fclose(stream);
mimil 1:6df1d1f1b372 108 return NULL;
mimil 1:6df1d1f1b372 109 }
mimil 1:6df1d1f1b372 110 //free(buffer);
mimil 1:6df1d1f1b372 111 fdev_set_udata(stream,NULL);
mimil 1:6df1d1f1b372 112 fclose(stream);
mimil 1:6df1d1f1b372 113 return result;
mimil 1:6df1d1f1b372 114 }*/
mimil 1:6df1d1f1b372 115
mimil 1:6df1d1f1b372 116 /*int
mimil 1:6df1d1f1b372 117 stringGet(FILE* stream)
mimil 1:6df1d1f1b372 118 {
mimil 1:6df1d1f1b372 119 string_input_stream_info* udata =
mimil 1:6df1d1f1b372 120 (string_input_stream_info*) fdev_get_udata(stream);
mimil 1:6df1d1f1b372 121 char result = udata->string[udata->position];
mimil 1:6df1d1f1b372 122 if (result == 0)
mimil 1:6df1d1f1b372 123 {
mimil 1:6df1d1f1b372 124 return EOF;
mimil 1:6df1d1f1b372 125 }
mimil 1:6df1d1f1b372 126 else
mimil 1:6df1d1f1b372 127 {
mimil 1:6df1d1f1b372 128 udata->position++;
mimil 1:6df1d1f1b372 129 return result;
mimil 1:6df1d1f1b372 130 }
mimil 1:6df1d1f1b372 131 }*/
mimil 1:6df1d1f1b372 132
mimil 1:6df1d1f1b372 133 /*int
mimil 1:6df1d1f1b372 134 stringPut(char c, FILE* stream)
mimil 1:6df1d1f1b372 135 {
mimil 1:6df1d1f1b372 136 string_buffer* buffer = (string_buffer*) fdev_get_udata(stream);
mimil 1:6df1d1f1b372 137 if (stringBufferAdd(c, buffer))
mimil 1:6df1d1f1b372 138 {
mimil 1:6df1d1f1b372 139 return EOF;
mimil 1:6df1d1f1b372 140 }
mimil 1:6df1d1f1b372 141 return 0;
mimil 1:6df1d1f1b372 142 }*/