]>
Commit | Line | Data |
---|---|---|
a51447c9 KS |
1 | |
2 | #if HAVE_CONFIG_H | |
3 | #include <config.h> | |
4 | #endif | |
5 | ||
6 | #include <yaml/yaml.h> | |
7 | ||
95b98ba9 KS |
8 | #include <assert.h> |
9 | ||
10 | /* | |
11 | * Allocate a dynamic memory block. | |
12 | */ | |
13 | ||
f642fd11 | 14 | YAML_DECLARE(void *) |
95b98ba9 KS |
15 | yaml_malloc(size_t size) |
16 | { | |
17 | return malloc(size ? size : 1); | |
18 | } | |
19 | ||
20 | /* | |
21 | * Reallocate a dynamic memory block. | |
22 | */ | |
23 | ||
f642fd11 | 24 | YAML_DECLARE(void *) |
95b98ba9 KS |
25 | yaml_realloc(void *ptr, size_t size) |
26 | { | |
27 | return ptr ? realloc(ptr, size ? size : 1) : malloc(size ? size : 1); | |
28 | } | |
29 | ||
a51447c9 | 30 | /* |
95b98ba9 KS |
31 | * Free a dynamic memory block. |
32 | */ | |
33 | ||
f642fd11 | 34 | YAML_DECLARE(void) |
95b98ba9 KS |
35 | yaml_free(void *ptr) |
36 | { | |
37 | if (ptr) free(ptr); | |
38 | } | |
39 | ||
40 | /* | |
41 | * Create a new parser object. | |
a51447c9 KS |
42 | */ |
43 | ||
f642fd11 | 44 | YAML_DECLARE(yaml_parser_t *) |
a51447c9 KS |
45 | yaml_parser_new(void) |
46 | { | |
47 | yaml_parser_t *parser; | |
48 | ||
6eb1ded4 KS |
49 | /* Allocate the parser structure. */ |
50 | ||
95b98ba9 | 51 | parser = yaml_malloc(sizeof(yaml_parser_t)); |
f2b59d4d | 52 | if (!parser) goto error; |
a51447c9 KS |
53 | |
54 | memset(parser, 0, sizeof(yaml_parser_t)); | |
55 | ||
6eb1ded4 KS |
56 | /* Allocate the raw buffer. */ |
57 | ||
58 | parser->raw_buffer = yaml_malloc(YAML_RAW_BUFFER_SIZE); | |
f2b59d4d KS |
59 | if (!parser->raw_buffer) goto error; |
60 | memset(parser->raw_buffer, 0, YAML_RAW_BUFFER_SIZE); | |
61 | ||
6eb1ded4 KS |
62 | parser->raw_pointer = parser->raw_buffer; |
63 | parser->raw_unread = 0; | |
64 | ||
65 | /* Allocate the character buffer. */ | |
66 | ||
67 | parser->buffer = yaml_malloc(YAML_BUFFER_SIZE); | |
f2b59d4d KS |
68 | if (!parser->buffer) goto error; |
69 | memset(parser->buffer, 0, YAML_BUFFER_SIZE); | |
70 | ||
6eb1ded4 KS |
71 | parser->buffer_end = parser->buffer; |
72 | parser->pointer = parser->buffer; | |
73 | parser->unread = 0; | |
74 | ||
f2b59d4d KS |
75 | /* Allocate the tokens queue. */ |
76 | ||
77 | parser->tokens = yaml_malloc(YAML_DEFAULT_SIZE*sizeof(yaml_token_t *)); | |
78 | if (!parser->tokens) goto error; | |
79 | memset(parser->tokens, 0, YAML_DEFAULT_SIZE*sizeof(yaml_token_t *)); | |
80 | ||
81 | parser->tokens_size = YAML_DEFAULT_SIZE; | |
82 | parser->tokens_head = 0; | |
83 | parser->tokens_tail = 0; | |
84 | parser->tokens_parsed = 0; | |
85 | ||
86 | /* Allocate the indents stack. */ | |
87 | ||
88 | parser->indents = yaml_malloc(YAML_DEFAULT_SIZE*sizeof(int)); | |
89 | if (!parser->indents) goto error; | |
90 | memset(parser->indents, 0, YAML_DEFAULT_SIZE*sizeof(int)); | |
91 | ||
92 | parser->indents_size = YAML_DEFAULT_SIZE; | |
93 | parser->indents_length = 0; | |
94 | ||
95 | /* Allocate the stack of potential simple keys. */ | |
96 | ||
97 | parser->simple_keys = yaml_malloc(YAML_DEFAULT_SIZE*sizeof(yaml_simple_key_t *)); | |
98 | if (!parser->simple_keys) goto error; | |
99 | memset(parser->simple_keys, 0, YAML_DEFAULT_SIZE*sizeof(yaml_simple_key_t *)); | |
100 | ||
101 | parser->simple_keys_size = YAML_DEFAULT_SIZE; | |
102 | ||
103 | /* Done. */ | |
104 | ||
a51447c9 | 105 | return parser; |
f2b59d4d KS |
106 | |
107 | /* On error, free allocated buffers. */ | |
108 | ||
109 | error: | |
110 | ||
111 | if (!parser) return NULL; | |
112 | ||
113 | yaml_free(parser->simple_keys); | |
114 | yaml_free(parser->indents); | |
115 | yaml_free(parser->tokens); | |
116 | yaml_free(parser->buffer); | |
117 | yaml_free(parser->raw_buffer); | |
118 | ||
119 | yaml_free(parser); | |
120 | ||
121 | return NULL; | |
a51447c9 KS |
122 | } |
123 | ||
124 | /* | |
125 | * Destroy a parser object. | |
126 | */ | |
127 | ||
f642fd11 | 128 | YAML_DECLARE(void) |
a51447c9 KS |
129 | yaml_parser_delete(yaml_parser_t *parser) |
130 | { | |
95b98ba9 KS |
131 | assert(parser); /* Non-NULL parser object expected. */ |
132 | ||
f2b59d4d KS |
133 | yaml_free(parser->simple_keys); |
134 | yaml_free(parser->indents); | |
135 | yaml_free(parser->tokens); | |
95b98ba9 | 136 | yaml_free(parser->buffer); |
6eb1ded4 | 137 | yaml_free(parser->raw_buffer); |
95b98ba9 KS |
138 | |
139 | memset(parser, 0, sizeof(yaml_parser_t)); | |
140 | ||
141 | yaml_free(parser); | |
142 | } | |
143 | ||
144 | /* | |
6eb1ded4 | 145 | * String read handler. |
95b98ba9 KS |
146 | */ |
147 | ||
148 | static int | |
149 | yaml_string_read_handler(void *data, unsigned char *buffer, size_t size, | |
150 | size_t *size_read) | |
151 | { | |
6eb1ded4 KS |
152 | yaml_string_input_t *input = data; |
153 | ||
154 | if (input->current == input->end) { | |
155 | *size_read = 0; | |
156 | return 1; | |
157 | } | |
158 | ||
159 | if (size > (input->end - input->current)) { | |
160 | size = input->end - input->current; | |
161 | } | |
162 | ||
163 | memcpy(buffer, input->current, size); | |
164 | input->current += size; | |
165 | *size_read = size; | |
95b98ba9 KS |
166 | return 1; |
167 | } | |
168 | ||
169 | /* | |
170 | * File read handler. | |
171 | */ | |
172 | ||
173 | static int | |
174 | yaml_file_read_handler(void *data, unsigned char *buffer, size_t size, | |
175 | size_t *size_read) | |
176 | { | |
6eb1ded4 KS |
177 | *size_read = fread(buffer, 1, size, (FILE *)data); |
178 | return !ferror((FILE *)data); | |
95b98ba9 KS |
179 | } |
180 | ||
181 | /* | |
182 | * Set a string input. | |
183 | */ | |
184 | ||
f642fd11 | 185 | YAML_DECLARE(void) |
95b98ba9 KS |
186 | yaml_parser_set_input_string(yaml_parser_t *parser, |
187 | unsigned char *input, size_t size) | |
188 | { | |
189 | assert(parser); /* Non-NULL parser object expected. */ | |
6eb1ded4 | 190 | assert(!parser->read_handler); /* You can set the source only once. */ |
95b98ba9 KS |
191 | assert(input); /* Non-NULL input string expected. */ |
192 | ||
6eb1ded4 KS |
193 | parser->string_input.start = input; |
194 | parser->string_input.current = input; | |
195 | parser->string_input.end = input+size; | |
95b98ba9 | 196 | |
6eb1ded4 KS |
197 | parser->read_handler = yaml_string_read_handler; |
198 | parser->read_handler_data = &parser->string_input; | |
95b98ba9 KS |
199 | } |
200 | ||
201 | /* | |
202 | * Set a file input. | |
203 | */ | |
204 | ||
f642fd11 | 205 | YAML_DECLARE(void) |
95b98ba9 KS |
206 | yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file) |
207 | { | |
208 | assert(parser); /* Non-NULL parser object expected. */ | |
6eb1ded4 | 209 | assert(!parser->read_handler); /* You can set the source only once. */ |
95b98ba9 KS |
210 | assert(file); /* Non-NULL file object expected. */ |
211 | ||
212 | parser->read_handler = yaml_file_read_handler; | |
213 | parser->read_handler_data = file; | |
214 | } | |
215 | ||
216 | /* | |
217 | * Set a generic input. | |
218 | */ | |
219 | ||
f642fd11 | 220 | YAML_DECLARE(void) |
95b98ba9 KS |
221 | yaml_parser_set_input(yaml_parser_t *parser, |
222 | yaml_read_handler_t *handler, void *data) | |
223 | { | |
224 | assert(parser); /* Non-NULL parser object expected. */ | |
6eb1ded4 | 225 | assert(!parser->read_handler); /* You can set the source only once. */ |
95b98ba9 KS |
226 | assert(handler); /* Non-NULL read handler expected. */ |
227 | ||
228 | parser->read_handler = handler; | |
6eb1ded4 | 229 | parser->read_handler_data = data; |
95b98ba9 KS |
230 | } |
231 | ||
232 | /* | |
233 | * Set the source encoding. | |
234 | */ | |
235 | ||
f642fd11 | 236 | YAML_DECLARE(void) |
95b98ba9 KS |
237 | yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding) |
238 | { | |
239 | assert(parser); /* Non-NULL parser object expected. */ | |
240 | assert(!parser->encoding); /* Encoding is already set or detected. */ | |
241 | ||
242 | parser->encoding = encoding; | |
a51447c9 KS |
243 | } |
244 | ||
f642fd11 KS |
245 | /* |
246 | * Create a token. | |
247 | */ | |
248 | ||
249 | YAML_DECLARE(yaml_token_t *) | |
250 | yaml_token_new(yaml_token_type_t type, | |
251 | yaml_mark_t start_mark, yaml_mark_t end_mark) | |
252 | { | |
253 | yaml_token_t *token = yaml_malloc(sizeof(yaml_token_t)); | |
254 | ||
255 | if (!token) return NULL; | |
256 | ||
257 | memset(token, 0, sizeof(yaml_token_t)); | |
258 | ||
259 | token->type = type; | |
260 | token->start_mark = start_mark; | |
261 | token->end_mark = end_mark; | |
262 | ||
263 | return token; | |
264 | } | |
265 | ||
266 | /* | |
267 | * Create a STREAM-START token. | |
268 | */ | |
269 | ||
270 | YAML_DECLARE(yaml_token_t *) | |
271 | yaml_stream_start_token(yaml_encoding_t encoding, | |
272 | yaml_mark_t start_mark, yaml_mark_t end_mark) | |
273 | { | |
274 | yaml_token_t *token = yaml_token_new(YAML_STREAM_START_TOKEN, | |
275 | start_mark, end_mark); | |
276 | ||
277 | if (!token) return NULL; | |
278 | ||
279 | token->data.encoding = encoding; | |
280 | ||
281 | return token; | |
282 | } | |
283 | ||
284 | /* | |
285 | * Create a STREAM-END token. | |
286 | */ | |
287 | ||
288 | YAML_DECLARE(yaml_token_t *) | |
289 | yaml_stream_end_token(yaml_mark_t start_mark, yaml_mark_t end_mark) | |
290 | { | |
291 | yaml_token_t *token = yaml_token_new(YAML_STREAM_END_TOKEN, | |
292 | start_mark, end_mark); | |
293 | ||
294 | if (!token) return NULL; | |
295 | ||
296 | return token; | |
297 | } | |
298 | ||
299 | /* | |
300 | * Create a VERSION-DIRECTIVE token. | |
301 | */ | |
302 | ||
303 | YAML_DECLARE(yaml_token_t *) | |
304 | yaml_version_directive_token_new(int major, int minor, | |
305 | yaml_mark_t start_mark, yaml_mark_t end_mark) | |
306 | { | |
307 | yaml_token_t *token = yaml_token_new(YAML_VERSION_DIRECTIVE_TOKEN, | |
308 | start_mark, end_mark); | |
309 | ||
310 | if (!token) return NULL; | |
311 | ||
312 | token->data.version_directive.major = major; | |
313 | token->data.version_directive.minor = minor; | |
314 | ||
315 | return token; | |
316 | } | |
317 | ||
318 | /* | |
319 | * Create a TAG-DIRECTIVE token. | |
320 | */ | |
321 | ||
322 | YAML_DECLARE(yaml_token_t *) | |
323 | yaml_tag_directive_token_new(yaml_char_t *handle, yaml_char_t *prefix, | |
324 | yaml_mark_t start_mark, yaml_mark_t end_mark) | |
325 | { | |
326 | yaml_token_t *token = yaml_token_new(YAML_TAG_DIRECTIVE_TOKEN, | |
327 | start_mark, end_mark); | |
328 | ||
329 | if (!token) return NULL; | |
330 | ||
331 | token->data.tag_directive.handle = handle; | |
332 | token->data.tag_directive.prefix = prefix; | |
333 | ||
334 | return token; | |
335 | } | |
336 | ||
337 | /* | |
338 | * Create an ALIAS token. | |
339 | */ | |
340 | ||
341 | YAML_DECLARE(yaml_token_t *) | |
342 | yaml_alias_token_new(yaml_char_t *anchor, | |
343 | yaml_mark_t start_mark, yaml_mark_t end_mark) | |
344 | { | |
345 | yaml_token_t *token = yaml_token_new(YAML_ALIAS_TOKEN, | |
346 | start_mark, end_mark); | |
347 | ||
348 | if (!token) return NULL; | |
349 | ||
350 | token->data.anchor = anchor; | |
351 | ||
352 | return token; | |
353 | } | |
354 | ||
355 | /* | |
356 | * Create an ANCHOR token. | |
357 | */ | |
358 | ||
359 | YAML_DECLARE(yaml_token_t *) | |
360 | yaml_anchor_token_new(yaml_char_t *anchor, | |
361 | yaml_mark_t start_mark, yaml_mark_t end_mark) | |
362 | { | |
363 | yaml_token_t *token = yaml_token_new(YAML_ANCHOR_TOKEN, | |
364 | start_mark, end_mark); | |
365 | ||
366 | if (!token) return NULL; | |
367 | ||
368 | token->data.anchor = anchor; | |
369 | ||
370 | return token; | |
371 | } | |
372 | ||
373 | /* | |
374 | * Create a TAG token. | |
375 | */ | |
376 | ||
377 | YAML_DECLARE(yaml_token_t *) | |
378 | yaml_tag_token_new(yaml_char_t *handle, yaml_char_t *suffix, | |
379 | yaml_mark_t start_mark, yaml_mark_t end_mark) | |
380 | { | |
381 | yaml_token_t *token = yaml_token_new(YAML_TAG_TOKEN, | |
382 | start_mark, end_mark); | |
383 | ||
384 | if (!token) return NULL; | |
385 | ||
386 | token->data.tag.handle = handle; | |
387 | token->data.tag.suffix = suffix; | |
388 | ||
389 | return token; | |
390 | } | |
391 | ||
392 | /* | |
393 | * Create a SCALAR token. | |
394 | */ | |
395 | ||
396 | YAML_DECLARE(yaml_token_t *) | |
397 | yaml_scalar_token_new(yaml_char_t *value, size_t length, | |
398 | yaml_scalar_style_t style, | |
399 | yaml_mark_t start_mark, yaml_mark_t end_mark) | |
400 | { | |
401 | yaml_token_t *token = yaml_token_new(YAML_SCALAR_TOKEN, | |
402 | start_mark, end_mark); | |
403 | ||
404 | if (!token) return NULL; | |
405 | ||
406 | token->data.scalar.value = value; | |
407 | token->data.scalar.length = length; | |
408 | token->data.scalar.style = style; | |
409 | ||
410 | return token; | |
411 | } | |
412 | ||
413 | /* | |
414 | * Destroy a token object. | |
415 | */ | |
416 | ||
417 | YAML_DECLARE(void) | |
418 | yaml_token_delete(yaml_token_t *token) | |
419 | { | |
420 | assert(token); /* Non-NULL token object expected. */ | |
421 | ||
422 | switch (token->type) | |
423 | { | |
424 | case YAML_TAG_DIRECTIVE_TOKEN: | |
425 | yaml_free(token->data.tag_directive.handle); | |
426 | yaml_free(token->data.tag_directive.prefix); | |
427 | break; | |
428 | ||
429 | case YAML_ALIAS_TOKEN: | |
430 | case YAML_ANCHOR_TOKEN: | |
431 | yaml_free(token->data.anchor); | |
432 | break; | |
433 | ||
434 | case YAML_TAG_TOKEN: | |
435 | yaml_free(token->data.tag.handle); | |
436 | yaml_free(token->data.tag.suffix); | |
437 | break; | |
438 | ||
439 | case YAML_SCALAR_TOKEN: | |
440 | yaml_free(token->data.scalar.value); | |
441 | break; | |
442 | } | |
443 | ||
444 | memset(token, 0, sizeof(yaml_token_t)); | |
445 | ||
446 | yaml_free(token); | |
447 | } | |
448 |