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.
15 #include "strbuffer.h"
17 typedef int (*dump_func)(const char *buffer, int size, void *data);
26 static int dump_to_strbuffer(const char *buffer, int size, void *data)
28 return strbuffer_append_bytes((strbuffer_t *)data, buffer, size);
31 static int dump_to_file(const char *buffer, int size, void *data)
33 FILE *dest = (FILE *)data;
34 if(fwrite(buffer, size, 1, dest) != 1)
39 /* 256 spaces (the maximum indentation size) */
40 static char whitespace[] = " ";
42 static int dump_indent(uint32_t flags, int depth, dump_func dump, void *data)
44 if(JSON_INDENT(flags) > 0)
46 int i, ws_count = JSON_INDENT(flags);
48 if(dump("\n", 1, data))
51 for(i = 0; i < depth; i++)
53 if(dump(whitespace, ws_count, data))
60 static int dump_string(const char *str, dump_func dump, void *data)
64 if(dump("\"", 1, data))
74 while(*end && *end != '\\' && *end != '"' && (*end < 0 || *end > 0x1F))
78 if(dump(str, end - str, data))
85 /* handle \, ", and control codes */
89 case '\\': text = "\\\\"; break;
90 case '\"': text = "\\\""; break;
91 case '\b': text = "\\b"; break;
92 case '\f': text = "\\f"; break;
93 case '\n': text = "\\n"; break;
94 case '\r': text = "\\r"; break;
95 case '\t': text = "\\t"; break;
98 sprintf(seq, "\\u00%02x", *end);
105 if(dump(text, length, data))
112 return dump("\"", 1, data);
115 static int do_dump(const json_t *json, uint32_t flags, int depth,
116 dump_func dump, void *data)
118 switch(json_typeof(json)) {
120 return dump("null", 4, data);
123 return dump("true", 4, data);
126 return dump("false", 5, data);
133 size = asprintf(&buffer, "%d", json_integer_value(json));
137 ret = dump(buffer, size, data);
147 size = asprintf(&buffer, "%.17f", json_real_value(json));
151 ret = dump(buffer, size, data);
157 return dump_string(json_string_value(json), dump, data);
162 int n = json_array_size(json);
164 if(dump("[", 1, data))
167 return dump("]", 1, data);
168 if(dump_indent(flags, depth + 1, dump, data))
171 for(i = 0; i < n; ++i) {
172 if(do_dump(json_array_get(json, i), flags, depth + 1,
178 if(dump(",", 1, data) ||
179 dump_indent(flags, depth + 1, dump, data))
184 if(dump_indent(flags, depth, dump, data))
188 return dump("]", 1, data);
193 void *iter = json_object_iter((json_t *)json);
195 if(dump("{", 1, data))
198 return dump("}", 1, data);
199 if(dump_indent(flags, depth + 1, dump, data))
204 void *next = json_object_iter_next((json_t *)json, iter);
206 dump_string(json_object_iter_key(iter), dump, data);
207 if(dump(": ", 2, data) ||
208 do_dump(json_object_iter_value(iter), flags, depth + 1,
214 if(dump(",", 1, data) ||
215 dump_indent(flags, depth + 1, dump, data))
220 if(dump_indent(flags, depth, dump, data))
226 return dump("}", 1, data);
236 char *json_dumps(const json_t *json, uint32_t flags)
241 if(!json_is_array(json) && !json_is_object(json))
244 if(strbuffer_init(&strbuff))
247 if(do_dump(json, flags, 0, dump_to_strbuffer, (void *)&strbuff))
250 if(dump_to_strbuffer("\n", 1, (void *)&strbuff))
253 result = strdup(strbuffer_value(&strbuff));
254 strbuffer_close(&strbuff);
259 int json_dumpf(const json_t *json, FILE *output, uint32_t flags)
261 if(!json_is_array(json) && !json_is_object(json))
264 if(do_dump(json, flags, 0, dump_to_file, (void *)output))
266 return dump_to_file("\n", 1, (void *)output);
269 int json_dump_file(const json_t *json, const char *path, uint32_t flags)
273 FILE *output = fopen(path, "w");
277 result = json_dumpf(json, output, flags);