GCC Code Coverage Report

Directory: ./
File: src/parser_json.cpp
Date: 2025-11-27 16:44:16
Exec Total Coverage
Lines: 151 159 95.0%
Functions: 12 12 100.0%
Branches: 278 328 84.8%
Line Branch Exec Source
1 /***************************************
2 Auteur : Pierre Aubert
3 Mail : pierre.aubert@lapp.in2p3.fr
4 Licence : CeCILL-C
5 ****************************************/
6
7 #include "parse_generic_string.h"
8 #include "parser_json.h"
9
10 ///@brief Data used to parse a toml file
11 struct PJsonParserData{
12 ///File parser to be used
13 PFileParser parser;
14 ///True to continue the parsing, false to stop
15 bool isRun{true};
16 };
17
18 bool parser_json_list(ConfigNode & node, PJsonParserData & data);
19 bool parser_json_map(ConfigNode & node, PJsonParserData & data);
20
21 ///Print the parsing error
22 /** @param[out] parser : parser to be used
23 * @param[out] isRunning : true to continue the parsing, false to stop it
24 * @param errorMsg : error message
25 * @return true and stop the parsing with isRunning
26 */
27 11 bool parser_jsonErrorAt(PJsonParserData & data, const PString & errorMsg){
28 11 data.isRun = false;
29
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 11 std::cerr << "parser_jsonErrorAt : " << data.parser.getLocation() << std::endl;
30 11 std::cerr << "\t" << errorMsg << std::endl;
31
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 11 std::cerr << "Wrong token : '"<<data.parser.getNextToken()<<"'" << std::endl;
32 11 return true;
33 }
34
35 ///Parse a JSON string
36 /** @param[out] str : parsed string
37 * @param[out] data : parsing data
38 * @return true on success, false otherwise
39 */
40 46 bool parser_jsonString(PString & str, PJsonParserData & data){
41
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 46 if(data.parser.isMatch("\"")){
42
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 41 str = "\"" + data.parser.getUntilKey("\"");
43 41 return true;
44 }
45 5 return false;
46 }
47
48
49 ///Parse a json
50 /** @param[out] node : ConfigNode of values
51 * @param data : PJsonParserData to be used
52 * @return true on success, false otherwise
53 */
54 28 bool parser_json_value(PString & value, PJsonParserData & data){
55 28 PFileParser & parser = data.parser;
56 28 parser.pushPosition();
57
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 28 if(!parser_jsonString(value, data)){
58
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 5 value = parser.getStrComposedOf("abcdefghijklmnopqsrtuvwxyzABCDEFGHIJKLMNOPQSRTUVWXYZ0123456789._-+");
59
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 5 if(value == ""){
60 3 parser.popPosition();
61 3 parser.clearPosition();
62 3 return false;
63 }
64 }
65
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 25 if(parser.isMatchRewind(":")){
66 8 parser.popPosition();
67 8 return false;
68 }
69 17 parser.clearPosition();
70 17 return true;
71 }
72
73 ///Parse a json
74 /** @param[out] node : ConfigNode of values
75 * @param data : PJsonParserData to be used
76 * @return true on success, false otherwise
77 */
78 24 bool parser_json_value(ConfigNode & node, PJsonParserData & data){
79
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 24 PString value;
80
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 24 if(parser_json_value(value, data)){
81
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 13 node.setValue(value);
82
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 13 node.setLineCol(data.parser.getLocation());
83 13 return true;
84 }
85 11 return false;
86 24 }
87
88 ///Parse a json
89 /** @param[out] node : ConfigNode of values
90 * @param data : PJsonParserData to be used
91 * @return true on success, false otherwise
92 */
93 18 bool parser_json_key(ConfigNode & node, PJsonParserData & data){
94
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 18 PString key;
95
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 18 if(parser_jsonString(key, data)){
96
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 18 ConfigNode * child = node.addChild(key);
97
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 18 if(child == NULL){ //If the child is NULL, there is already a child named key
98
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 2 ConfigNode * prevChild = node.getChild(key.eraseFirstLastChar("\"'"));
99
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 2 std::stringstream location;
100
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 2 if(prevChild != NULL){
101
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 2 location << prevChild->getLocation();
102 }
103
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 2 return parser_jsonErrorAt(data, "key '"+key+"' already defined at " + location.str());
104 2 }
105
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 16 if(data.parser.isMatch(":")){
106
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 16 child->setLineCol(data.parser.getLocation());
107 //Let's parse the value of this child (map or list or value)
108
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 16 if(parser_json_map(*child, data)){}
109
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 13 else if(parser_json_list(*child, data)){}
110
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 12 else if(parser_json_value(*child, data)){}
111 else{
112
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 1 return parser_jsonErrorAt(data, "Cannot parse json value of key '"+key+"'");
113 }
114 15 return data.isRun;
115 }else{
116 ✗ return parser_jsonErrorAt(data, "Expect ':' after key '"+key+"'");
117 }
118 }else{
119 ✗ return parser_jsonErrorAt(data, "Expect \"key\"': ...");
120 }
121 return false;
122 18 }
123
124 ///Parse a json
125 /** @param[out] node : ConfigNode of values
126 * @param data : PJsonParserData to be used
127 * @return true on success, false otherwise
128 */
129 33 bool parser_json_map(ConfigNode & node, PJsonParserData & data){
130 33 PFileParser & parser = data.parser;
131
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 33 if(!parser.isMatch("{")){return false;}
132
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 3 node.setLineCol(parser.getLocation());
133
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 12 while(!parser.isEndOfFile() && !parser.isMatch("}") && data.isRun){
134 //key:Map or key:list or key:value
135
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 6 if(!parser_json_key(node, data)){
136 ✗ return parser_jsonErrorAt(data, "Expect \"key\"");
137 }
138
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 6 if(parser.isMatch(",")){}
139
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 3 else if(parser.isMatchRewind("}")){}
140 else{
141 ✗ return parser_jsonErrorAt(data, "Expect ',' or '}' after key");
142 }
143 }
144 3 return data.isRun;
145 }
146
147 ///Parse a json
148 /** @param[out] node : ConfigNode of values
149 * @param data : PJsonParserData to be used
150 * @return true on success, false otherwise
151 */
152 30 bool parser_json_list(ConfigNode & node, PJsonParserData & data){
153 30 PFileParser & parser = data.parser;
154
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 30 if(!parser.isMatch("[")){return false;}
155
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 2 node.setLineCol(parser.getLocation());
156
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 7 while(!parser.isEndOfFile() && !parser.isMatch("]") && data.isRun){
157 // On crée un enfant anonyme pour chaque élément du tableau
158
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 4 ConfigNode * child = node.addChild("");
159
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 4 if(parser_json_map(*child, data)){}
160
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 4 else if(parser_json_list(*child, data)){}
161 else{
162
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 4 PString value;
163
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 4 if(parser_json_value(value, data)){
164
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 4 child->setValue(value);
165
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 4 child->setLineCol(data.parser.getLocation());
166 }
167 4 }
168
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 4 if(parser.isMatch(",")){}
169
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 2 else if(parser.isMatchRewind("]")){}
170 else{
171
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 1 return parser_jsonErrorAt(data, "Expect ',' or ']' after value");
172 }
173 }
174 1 return data.isRun;
175 }
176
177 ///Parse a json file
178 /** @param[out] node : ConfigNode of values
179 * @param data : PJsonParserData to be used
180 * @return true on success, false otherwise
181 */
182 14 bool parser_json_fileParser(ConfigNode & node, PJsonParserData & data){
183 14 PFileParser & parser = data.parser;
184
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 14 parser.getStrComposedOf(" \t\n"); //Skip all blank characters
185
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 14 if(!parser.isMatch("{")){ //It has to start as JSON
186
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 1 return !parser_jsonErrorAt(data, "JSON configuration has to start with a {");
187 }
188
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 13 node.setLineCol(data.parser.getLocation());
189 //Call the Node Parsing
190 //Map or list or value or set of keys
191
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 13 if(parser_json_map(node, data)){}
192
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 13 else if(parser_json_list(node, data)){}
193
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 12 else if(parser_json_value(node, data)){}
194 else{
195
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 29 while(!parser.isEndOfFile() && !parser.isMatchRewind("}") && data.isRun){
196 //key:Map or key:list or key:value
197
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 12 if(!parser_json_key(node, data)){
198 ✗ return !parser_jsonErrorAt(data, "Expect \"key\"");
199 }
200
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 12 if(parser.isMatch(",")){}
201
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 8 else if(parser.isMatchRewind("}")){}
202 else{
203
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 3 return !parser_jsonErrorAt(data, "Expect ',' or '}' after key");
204 }
205 }
206 }
207
208
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 10 if(!parser.isMatch("}")){ //It has to start as JSON
209
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 3 return !parser_jsonErrorAt(data, "JSON configuration has to end with a }");
210 }
211 7 return data.isRun;
212 }
213
214 ///Load a JSON file
215 /** @param[out] main : ConfigNode to be updated
216 * @param fileName : name of the file to be loaded
217 * @return true on success, false otherwise
218 */
219 1 bool parser_json(ConfigNode & main, const PPath & fileName){
220
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 1 PJsonParserData data;
221 1 PFileParser & parser = data.parser;
222
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 1 parser.setWhiteSpace(" \n\t");
223
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 1 parser.setSeparator(":-'\",{}[]>|");
224
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 1 parser.setEscapeChar('\\');
225
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 1 if(!parser.open(fileName)){
226 ✗ std::cerr << "parser_json : cannot open file '"<<fileName<<"'" << std::endl;
227 ✗ return false;
228 }
229
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 1 main.setFileName(fileName);
230
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 1 bool b(parser_json_fileParser(main, data));
231 1 return b;
232 1 }
233
234 ///Load a JSON string
235 /** @param[out] main : ConfigNode to be updated
236 * @param fileContent : string to be loaded
237 * @return true on success, false otherwise
238 */
239 13 bool parser_jsonString(ConfigNode & main, const PString & fileContent){
240
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 13 PJsonParserData data;
241 13 PFileParser & parser = data.parser;
242
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 13 parser.setWhiteSpace(" \n\t");
243
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 13 parser.setSeparator(":-'\",{}[]>|");
244
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 13 parser.setEscapeChar('\\');
245
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 13 parser.setFileContent(fileContent);
246
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 13 bool b(parser_json_fileParser(main, data));
247 13 return b;
248 13 }
249
250
251 ///Convert the ConfigNode in a PString
252 /** @param node : ConfigNode to be saved
253 * @param indentation : indentation of the current ConfigNode
254 * @param baseIndentation : indentation character(s) to be used
255 * @param baseNewLine : new line character(s) to be used
256 * @param isInList : true if the dico value is in a list
257 * @return file content
258 */
259 18 PString toJsonSaveRecurse(const ConfigNode & node, const PString & indentation, const PString & baseIndentation, const PString & baseNewLine, bool isInList){
260
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 18 PString out(""), newIndentation(indentation);
261
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 18 const PString & name = node.getName();
262
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 18 if(name != "" || isInList){
263
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 13 newIndentation = indentation + baseIndentation;
264 }
265
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 18 const VecConfigNode & vecChild = node.getVecChild();
266
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 18 const MapConfigNode & mapChild = node.getMapChild();
267
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 18 if(mapChild.size() != 0lu){
268
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 6 if(name != ""){out += baseNewLine + indentation + name.addPrefixSuffix("\"","\"") + ": {";}
269
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 4 else if(isInList){out += baseNewLine+indentation+"{";}
270
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 6 PString comma("");
271
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 32 for(VecConfigNode::const_iterator it(vecChild.begin()); it != vecChild.end(); ++it){
272
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 10 out += comma;
273
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 10 out += toJsonSaveRecurse(**it, newIndentation, baseIndentation, baseNewLine, false);
274
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 10 comma = ",";
275 }
276
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 6 if(name != ""){out += baseNewLine+indentation+"}";}
277
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 4 else if(isInList){out += baseNewLine+indentation+"}";}
278
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 18 }else if(vecChild.size() != 0lu){
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 1 if(name != ""){out += baseNewLine + indentation + name.addPrefixSuffix("\"","\"") + ": [";}
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 1 PString comma("");
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 8 for(VecConfigNode::const_iterator it(vecChild.begin()); it != vecChild.end(); ++it){
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 3 out += comma;
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 3 out += toJsonSaveRecurse(**it, newIndentation, baseIndentation, baseNewLine, true);
284
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 3 comma = ", ";
285 }
286
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 1 if(name != ""){out += "]";}
287 1 }else{
288
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 11 if(name != ""){out += baseNewLine + indentation + name.addPrefixSuffix("\"","\"") + ": " + node.getValue().addPrefixSuffix("\"","\"");}
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 4 else{out += node.getValue().addPrefixSuffix("\"","\"");}
290 }
291 18 return out;
292 18 }
293
294 ///Convert the current ConfigNode to a JSON string
295 /** @param main : ConfigNode to be converted
296 * @param baseIndentation : indentation to be used
297 * @param baseNewLine : new line to be used
298 * @return corresponding PString
299 */
300 5 PString toJsonString(const ConfigNode & main, const PString & baseIndentation, const PString & baseNewLine){
301 5 PString out("{");
302
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 5 out += toJsonSaveRecurse(main, baseIndentation, baseIndentation, baseNewLine, false);
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 5 out += baseNewLine + "}";
304 5 return out;
305 ✗ }
306
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