9 typedef int (*dump_func)(const char *buffer, int size, void *data);
18 static int dump_to_string(const char *buffer, int size, void *data)
20 struct string *string = (struct string *)data;
21 if(string->length + size > string->size)
23 if(string->length == 0)
28 string->buffer = realloc(string->buffer, string->size);
32 memset(string->buffer + string->length, 0,
33 string->size - string->length);
36 memcpy(string->buffer + string->length, buffer, size);
37 string->length += size;
42 static int dump_to_file(const char *buffer, int size, void *data)
44 FILE *dest = (FILE *)data;
45 if(fwrite(buffer, size, 1, dest) != 1)
50 static int dump_to_fd(const char *buffer, int size, void *data)
52 int *fd = (int *)data;
53 if(write(*fd, buffer, size) != size)
58 static int dump_indent(uint32_t flags, int depth, dump_func dump, void *data)
60 if(JSON_INDENT(flags) > 0)
63 int ws_count = JSON_INDENT(flags) * depth;
65 if(dump("\n", 1, data))
71 ws_buffer = alloca(ws_count);
72 memset(ws_buffer, ' ', ws_count);
73 return dump(ws_buffer, ws_count, data);
76 return dump(" ", 1, data);
79 static int dump_string(const char *str, dump_func dump, void *data)
83 if(dump("\"", 1, data))
89 while(*end && *end != '\\' && *end != '"')
93 if(dump(str, end - str, data))
98 if(dump("\\\\", 2, data))
104 if(dump("\\\"", 2, 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, "%.17f", json_number_value(json));
136 ret = dump(buffer, size, data);
142 return dump_string(json_string_value(json), dump, data);
147 int n = json_array_size(json);
149 if(dump("[", 1, data))
153 if(dump_indent(flags, depth + 1, dump, data))
156 for(i = 0; i < n; ++i) {
157 if(do_dump(json_array_get(json, i), flags, depth + 1,
163 if(dump(",", 1, data) ||
164 dump_indent(flags, depth + 1, dump, data))
169 if(dump_indent(flags, depth, dump, data))
173 return dump("]", 1, data);
178 void *iter = json_object_iter((json_t *)json);
180 if(dump("{", 1, data))
183 return dump("}", 1, data);
184 if(dump_indent(flags, depth + 1, dump, data))
189 void *next = json_object_iter_next((json_t *)json, iter);
191 dump_string(json_object_iter_key(iter), dump, data);
192 if(dump(": ", 2, data) ||
193 do_dump(json_object_iter_value(iter), flags, depth + 1,
199 if(dump(",", 1, data) ||
200 dump_indent(flags, depth + 1, dump, data))
205 if(dump_indent(flags, depth, dump, data))
211 return dump("}", 1, data);
221 int json_dump(const json_t *json, const char *path, uint32_t flags)
223 FILE *output = fopen(path, "w");
227 return json_dumpf(json, output, flags);
230 char *json_dumps(const json_t *json, uint32_t flags)
232 struct string string;
234 memset(&string, 0, sizeof(struct string));
236 if(do_dump(json, flags, 0, dump_to_string, (void *)&string))
239 if(dump_to_string("\n", 1, (void *)&string))
242 /* consume just the right amount of memory */
243 result = strdup(string.buffer);
249 int json_dumpf(const json_t *json, FILE *output, uint32_t flags)
251 if(do_dump(json, flags, 0, dump_to_file, (void *)output))
253 return dump_to_file("\n", 1, (void *)output);
256 int json_dumpfd(const json_t *json, int fd, uint32_t flags)
258 if(do_dump(json, flags, 0, dump_to_fd, (void *)&fd))
260 return dump_to_fd("\n", 1, (void *)&fd);