2 Copyright (C) 2006 Georgia Public Library Service
3 Bill Erickson <billserickson@gmail.com>
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
17 /* ----------------------------------------------------------------------- */
18 /* Clients need not include this file. These are internal utilities only */
19 /* ----------------------------------------------------------------------- */
21 #define JSON_EAT_WS(ctx) \
22 while( ctx->index < ctx->chunksize ) { \
23 if(!isspace(ctx->chunk[ctx->index])) break; \
26 if( ctx->index >= ctx->chunksize ) return 0; \
27 c = ctx->chunk[ctx->index];
29 #define JSON_CACHE_DATA(ctx, buf, size) \
30 while( (buf->n_used < size) && (ctx->index < ctx->chunksize) ) \
31 buffer_add_char(buf, ctx->chunk[ctx->index++]);
33 #define JSON_LOG_MARK __FILE__,__LINE__
35 #define JSON_NUMBER_CHARS "0123456789.+-e"
38 /* cleans up an object if it is morphing another object, also
39 * verifies that the appropriate storage container exists where appropriate */
40 #define JSON_INIT_CLEAR(_obj_, newtype) \
41 if( _obj_->type == JSON_HASH && newtype != JSON_HASH ) { \
42 osrfHashFree(_obj_->value.h); \
43 _obj_->value.h = NULL; \
44 } else if( _obj_->type == JSON_ARRAY && newtype != JSON_ARRAY ) { \
45 osrfListFree(_obj_->value.l); \
46 _obj_->value.l = NULL; \
47 } else if( _obj_->type == JSON_STRING && newtype != JSON_STRING ) { \
48 free(_obj_->value.s); \
49 _obj_->value.s = NULL; \
51 _obj_->type = newtype;\
52 if( newtype == JSON_HASH && _obj_->value.h == NULL ) { \
53 _obj_->value.h = osrfNewHash(); \
54 _obj_->value.h->freeItem = _jsonFreeHashItem; \
55 } else if( newtype == JSON_ARRAY && _obj_->value.l == NULL ) { \
56 _obj_->value.l = osrfNewList(); \
57 _obj_->value.l->freeItem = _jsonFreeListItem;\
62 * These are the callbacks through which the top level parser
63 * builds objects via the push parser
65 void _jsonHandleStartObject(void*);
66 void _jsonHandleObjectKey(void*, char* key);
67 void _jsonHandleEndObject(void*);
68 void _jsonHandleStartArray(void*);
69 void _jsonHandleEndArray(void*);
70 void _jsonHandleNull(void*);
71 void _jsonHandleString(void*, char* string);
72 void _jsonHandleBool(void*, int boolval);
73 void _jsonHandleNumber(void*, double num);
74 void _jsonHandleError(void*, char* str, ...);
76 struct jsonInternalParserStruct {
77 jsonParserContext* ctx;
81 void (*handleError) (const char*);
83 typedef struct jsonInternalParserStruct jsonInternalParser;
85 jsonInternalParser* _jsonNewInternalParser();
86 void _jsonInternalParserFree(jsonInternalParser* p);
89 * Calls the defined error handler with the given error message.
92 int _jsonParserError( jsonParserContext* ctx, char* err, ... );
97 * @return 0 on continue, 1 if it goes past the end of the string, -1 on error
99 int _jsonParserHandleUnicode( jsonParserContext* ctx );
103 * @param type 0 for null, 1 for true, 2 for false
104 * @return 0 on continue, 1 if it goes past the end of the string, -1 on error
106 int _jsonParserHandleMatch( jsonParserContext* ctx, int type );
109 * @return 0 on continue, 1 on end of chunk, -1 on error
111 int _jsonParserHandleString( jsonParserContext* ctx );
114 * @return 0 on continue, 1 on end of chunk, -1 on error
116 int _jsonParserHandleNumber( jsonParserContext* ctx );
119 void _jsonInsertParserItem( jsonInternalParser* p, jsonObject* newo );
122 /* Utility method. finds any object in the tree that matches the path.
123 Use this for finding paths that start with '//' */
124 jsonObject* _jsonObjectFindPathRecurse( const jsonObject* o, char* root, char* path );
127 /* returns a list of object whose key is 'root'. These are used as
128 potential objects when doing a // search */
129 jsonObject* __jsonObjectFindPathRecurse( const jsonObject* o, char* root );