2 * Copyright (c) 2009 Petri Lehtinen <petri@digip.org>
4 * Jansson is free software; you can redistribute it and/or modify
5 * it under the terms of the MIT license. See LICENSE for details.
14 #include "strbuffer.h"
16 typedef int (*dump_func)(const char *buffer, int size, void *data);
25 static int dump_to_strbuffer(const char *buffer, int size, void *data)
27 return strbuffer_append_bytes((strbuffer_t *)data, buffer, size);
30 static int dump_to_file(const char *buffer, int size, void *data)
32 FILE *dest = (FILE *)data;
33 if(fwrite(buffer, size, 1, dest) != 1)
38 /* 256 spaces (the maximum indentation size) */
39 static char whitespace[] = " ";
41 static int dump_indent(unsigned long flags, int depth, dump_func dump, void *data)
43 if(JSON_INDENT(flags) > 0)
45 int i, ws_count = JSON_INDENT(flags);
47 if(dump("\n", 1, data))
50 for(i = 0; i < depth; i++)
52 if(dump(whitespace, ws_count, data))
59 static int dump_string(const char *str, dump_func dump, void *data)
63 if(dump("\"", 1, data))
73 while(*end && *end != '\\' && *end != '"' && (unsigned char)*end > 0x1F)
77 if(dump(str, end - str, data))
84 /* handle \, ", and control codes */
88 case '\\': text = "\\\\"; break;
89 case '\"': text = "\\\""; break;
90 case '\b': text = "\\b"; break;
91 case '\f': text = "\\f"; break;
92 case '\n': text = "\\n"; break;
93 case '\r': text = "\\r"; break;
94 case '\t': text = "\\t"; break;
97 sprintf(seq, "\\u00%02x", *end);
104 if(dump(text, length, data))
111 return dump("\"", 1, data);
114 static int do_dump(const json_t *json, unsigned long flags, int depth,
115 dump_func dump, void *data)
117 switch(json_typeof(json)) {
119 return dump("null", 4, data);
122 return dump("true", 4, data);
125 return dump("false", 5, data);
132 size = asprintf(&buffer, "%d", json_integer_value(json));
136 ret = dump(buffer, size, data);
146 size = asprintf(&buffer, "%.17f", json_real_value(json));
150 ret = dump(buffer, size, data);
156 return dump_string(json_string_value(json), dump, data);
161 int n = json_array_size(json);
163 if(dump("[", 1, data))
166 return dump("]", 1, data);
167 if(dump_indent(flags, depth + 1, dump, data))
170 for(i = 0; i < n; ++i) {
171 if(do_dump(json_array_get(json, i), flags, depth + 1,
177 if(dump(",", 1, data) ||
178 dump_indent(flags, depth + 1, dump, data))
183 if(dump_indent(flags, depth, dump, data))
187 return dump("]", 1, data);
192 void *iter = json_object_iter((json_t *)json);
194 if(dump("{", 1, data))
197 return dump("}", 1, data);
198 if(dump_indent(flags, depth + 1, dump, data))
203 void *next = json_object_iter_next((json_t *)json, iter);
205 dump_string(json_object_iter_key(iter), dump, data);
206 if(dump(": ", 2, data) ||
207 do_dump(json_object_iter_value(iter), flags, depth + 1,
213 if(dump(",", 1, data) ||
214 dump_indent(flags, depth + 1, dump, data))
219 if(dump_indent(flags, depth, dump, data))
225 return dump("}", 1, data);
235 char *json_dumps(const json_t *json, unsigned long flags)
240 if(!json_is_array(json) && !json_is_object(json))
243 if(strbuffer_init(&strbuff))
246 if(do_dump(json, flags, 0, dump_to_strbuffer, (void *)&strbuff))
249 if(dump_to_strbuffer("\n", 1, (void *)&strbuff))
252 result = strdup(strbuffer_value(&strbuff));
253 strbuffer_close(&strbuff);
258 int json_dumpf(const json_t *json, FILE *output, unsigned long flags)
260 if(!json_is_array(json) && !json_is_object(json))
263 if(do_dump(json, flags, 0, dump_to_file, (void *)output))
265 return dump_to_file("\n", 1, (void *)output);
268 int json_dump_file(const json_t *json, const char *path, unsigned long flags)
272 FILE *output = fopen(path, "w");
276 result = json_dumpf(json, output, flags);