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 static int dump_indent(uint32_t flags, int depth, dump_func dump, void *data)
41 if(JSON_INDENT(flags) > 0)
44 int ws_count = JSON_INDENT(flags) * depth;
46 if(dump("\n", 1, data))
52 ws_buffer = alloca(ws_count);
53 memset(ws_buffer, ' ', ws_count);
54 return dump(ws_buffer, 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 != '"' && (*end < 0 || *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, uint32_t 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, uint32_t flags)
240 if(strbuffer_init(&strbuff))
243 if(do_dump(json, flags, 0, dump_to_strbuffer, (void *)&strbuff))
246 if(dump_to_strbuffer("\n", 1, (void *)&strbuff))
249 result = strdup(strbuffer_value(&strbuff));
250 strbuffer_close(&strbuff);
255 int json_dumpf(const json_t *json, FILE *output, uint32_t flags)
257 if(do_dump(json, flags, 0, dump_to_file, (void *)output))
259 return dump_to_file("\n", 1, (void *)output);
262 int json_dump_file(const json_t *json, const char *path, uint32_t flags)
266 FILE *output = fopen(path, "w");
270 result = json_dumpf(json, output, flags);