2 * Copyright © 2013,2021 Ran Benita <ran234@gmail.com>
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
30 #include "xkbcommon/xkbcommon.h"
32 static struct xkb_compose_table *
33 xkb_compose_table_new(struct xkb_context *ctx,
35 enum xkb_compose_format format,
36 enum xkb_compose_compile_flags flags)
38 char *resolved_locale;
39 struct xkb_compose_table *table;
40 struct compose_node dummy;
42 resolved_locale = resolve_locale(ctx, locale);
46 table = calloc(1, sizeof(*table));
48 free(resolved_locale);
53 table->ctx = xkb_context_ref(ctx);
55 table->locale = resolved_locale;
56 table->format = format;
59 darray_init(table->nodes);
60 darray_init(table->utf8);
62 dummy.keysym = XKB_KEY_NoSymbol;
63 dummy.leaf.is_leaf = true;
65 dummy.leaf.keysym = XKB_KEY_NoSymbol;
66 darray_append(table->nodes, dummy);
68 darray_append(table->utf8, '\0');
73 XKB_EXPORT struct xkb_compose_table *
74 xkb_compose_table_ref(struct xkb_compose_table *table)
81 xkb_compose_table_unref(struct xkb_compose_table *table)
83 if (!table || --table->refcnt > 0)
86 darray_free(table->nodes);
87 darray_free(table->utf8);
88 xkb_context_unref(table->ctx);
92 XKB_EXPORT struct xkb_compose_table *
93 xkb_compose_table_new_from_file(struct xkb_context *ctx,
96 enum xkb_compose_format format,
97 enum xkb_compose_compile_flags flags)
99 struct xkb_compose_table *table;
102 if (flags & ~(XKB_COMPOSE_COMPILE_NO_FLAGS)) {
103 log_err_func(ctx, "unrecognized flags: %#x\n", flags);
107 if (format != XKB_COMPOSE_FORMAT_TEXT_V1) {
108 log_err_func(ctx, "unsupported compose format: %d\n", format);
112 table = xkb_compose_table_new(ctx, locale, format, flags);
116 ok = parse_file(table, file, "(unknown file)");
118 xkb_compose_table_unref(table);
125 XKB_EXPORT struct xkb_compose_table *
126 xkb_compose_table_new_from_buffer(struct xkb_context *ctx,
127 const char *buffer, size_t length,
129 enum xkb_compose_format format,
130 enum xkb_compose_compile_flags flags)
132 struct xkb_compose_table *table;
135 if (flags & ~(XKB_COMPOSE_COMPILE_NO_FLAGS)) {
136 log_err_func(ctx, "unrecognized flags: %#x\n", flags);
140 if (format != XKB_COMPOSE_FORMAT_TEXT_V1) {
141 log_err_func(ctx, "unsupported compose format: %d\n", format);
145 table = xkb_compose_table_new(ctx, locale, format, flags);
149 ok = parse_string(table, buffer, length, "(input string)");
151 xkb_compose_table_unref(table);
158 XKB_EXPORT struct xkb_compose_table *
159 xkb_compose_table_new_from_locale(struct xkb_context *ctx,
161 enum xkb_compose_compile_flags flags)
163 struct xkb_compose_table *table;
168 if (flags & ~(XKB_COMPOSE_COMPILE_NO_FLAGS)) {
169 log_err_func(ctx, "unrecognized flags: %#x\n", flags);
173 table = xkb_compose_table_new(ctx, locale, XKB_COMPOSE_FORMAT_TEXT_V1,
178 path = get_xcomposefile_path(ctx);
180 file = fopen(path, "rb");
186 path = get_xdg_xcompose_file_path(ctx);
188 file = fopen(path, "rb");
194 path = get_home_xcompose_file_path(ctx);
196 file = fopen(path, "rb");
202 path = get_locale_compose_file_path(ctx, table->locale);
204 file = fopen(path, "rb");
210 // TIZEN_ONLY(20210525)
211 // : fix not to display error log about the absense of compose file
212 if (!strncmp("en_US.UTF-8", locale, 11)) {
213 log_err(ctx, "couldn't find a Compose file for locale \"%s\" (mapped to \"%s\")\n",
214 locale, table->locale);
218 xkb_compose_table_unref(table);
222 ok = parse_file(table, file, path);
226 xkb_compose_table_unref(table);
230 log_dbg(ctx, XKB_LOG_MESSAGE_NO_ID,
231 "created compose table from locale %s with path %s\n",
232 table->locale, path);
238 XKB_EXPORT const xkb_keysym_t *
239 xkb_compose_table_entry_sequence(struct xkb_compose_table_entry *entry,
240 size_t *sequence_length)
242 *sequence_length = entry->sequence_length;
243 return entry->sequence;
246 XKB_EXPORT xkb_keysym_t
247 xkb_compose_table_entry_keysym(struct xkb_compose_table_entry *entry)
249 return entry->keysym;
252 XKB_EXPORT const char *
253 xkb_compose_table_entry_utf8(struct xkb_compose_table_entry *entry)
258 enum node_direction {
265 struct xkb_compose_table_iterator_cursor {
266 uint32_t node_offset:30; /* WARNING: ensure it fits MAX_COMPOSE_NODES */
267 uint8_t direction:2; /* enum node_direction: current direction
268 * traversing the tree */
271 struct xkb_compose_table_iterator {
272 struct xkb_compose_table *table;
274 struct xkb_compose_table_entry entry;
275 /* Stack of pending nodes to process */
276 darray(struct xkb_compose_table_iterator_cursor) cursors;
279 XKB_EXPORT struct xkb_compose_table_iterator *
280 xkb_compose_table_iterator_new(struct xkb_compose_table *table)
282 struct xkb_compose_table_iterator *iter;
283 struct xkb_compose_table_iterator_cursor cursor;
284 xkb_keysym_t *sequence;
286 iter = calloc(1, sizeof(*iter));
290 iter->table = xkb_compose_table_ref(table);
291 sequence = calloc(MAX_LHS_LEN, sizeof(xkb_keysym_t));
296 iter->entry.sequence = sequence;
297 iter->entry.sequence_length = 0;
299 darray_init(iter->cursors);
300 cursor.direction = NODE_LEFT;
301 /* Offset 0 is a dummy null entry, skip it. */
302 cursor.node_offset = 1;
303 darray_append(iter->cursors, cursor);
309 xkb_compose_table_iterator_free(struct xkb_compose_table_iterator *iter)
311 xkb_compose_table_unref(iter->table);
312 darray_free(iter->cursors);
313 free(iter->entry.sequence);
317 XKB_EXPORT struct xkb_compose_table_entry *
318 xkb_compose_table_iterator_next(struct xkb_compose_table_iterator *iter)
321 * This function takes the following recursive traversal function,
322 * and makes it non-recursive and resumable. The iter->cursors stack
323 * is analogous to the call stack, and cursor->direction to the
324 * instruction pointer of a stack frame.
326 * traverse(xkb_keysym_t *sequence, size_t sequence_length, uint16_t p) {
328 * // cursor->direction == NODE_LEFT
329 * node = &darray_item(table->nodes, p)
330 * traverse(sequence, sequence_length, node->lokid)
331 * // cursor->direction == NODE_DOWN
332 * sequence[sequence_length++] = node->keysym
334 * emit(sequence, sequence_length, node->leaf.keysym, table->utf[node->leaf.utf8])
336 * traverse(sequence, sequence_length, node->internal.eqkid)
338 * // cursor->direction == NODE_RIGHT
339 * traverse(sequence, sequence_length, node->hikid)
340 * // cursor->direction == NODE_UP
344 struct xkb_compose_table_iterator_cursor *cursor;
345 const struct compose_node *node;
347 while (!darray_empty(iter->cursors)) {
348 cursor = &darray_item(iter->cursors, darray_size(iter->cursors) - 1);
349 node = &darray_item(iter->table->nodes, cursor->node_offset);
351 switch (cursor->direction) {
353 cursor->direction = NODE_DOWN;
355 struct xkb_compose_table_iterator_cursor new_cursor = {node->lokid, NODE_LEFT};
356 darray_append(iter->cursors, new_cursor);
361 cursor->direction = NODE_RIGHT;
362 assert (iter->entry.sequence_length <= MAX_LHS_LEN);
363 iter->entry.sequence[iter->entry.sequence_length] = node->keysym;
364 iter->entry.sequence_length++;
366 iter->entry.keysym = node->leaf.keysym;
367 iter->entry.utf8 = &darray_item(iter->table->utf8, node->leaf.utf8);
370 struct xkb_compose_table_iterator_cursor new_cursor = {node->internal.eqkid, NODE_LEFT};
371 darray_append(iter->cursors, new_cursor);
376 cursor->direction = NODE_UP;
377 iter->entry.sequence_length--;
379 struct xkb_compose_table_iterator_cursor new_cursor = {node->hikid, NODE_LEFT};
380 darray_append(iter->cursors, new_cursor);
385 darray_remove_last(iter->cursors);