1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
32 typedef struct _GRealStringChunk GRealStringChunk;
33 typedef struct _GRealString GRealString;
35 struct _GRealStringChunk
37 GHashTable *const_table;
51 G_LOCK_DECLARE_STATIC (string_mem_chunk);
52 static GMemChunk *string_mem_chunk = NULL;
58 g_str_equal (gconstpointer v, gconstpointer v2)
60 return strcmp ((const gchar*) v, (const gchar*)v2) == 0;
63 /* a char* hash function from ASU */
65 g_str_hash (gconstpointer v)
67 const char *s = (char*)v;
71 for(p = s; *p != '\0'; p += 1) {
73 if ( ( g = h & 0xf0000000 ) ) {
87 g_string_chunk_new (gint default_size)
89 GRealStringChunk *new_chunk = g_new (GRealStringChunk, 1);
92 while (size < default_size)
95 new_chunk->const_table = NULL;
96 new_chunk->storage_list = NULL;
97 new_chunk->storage_next = size;
98 new_chunk->default_size = size;
99 new_chunk->this_size = size;
101 return (GStringChunk*) new_chunk;
105 g_string_chunk_free (GStringChunk *fchunk)
107 GRealStringChunk *chunk = (GRealStringChunk*) fchunk;
110 g_return_if_fail (chunk != NULL);
112 if (chunk->storage_list)
114 for (tmp_list = chunk->storage_list; tmp_list; tmp_list = tmp_list->next)
115 g_free (tmp_list->data);
117 g_slist_free (chunk->storage_list);
120 if (chunk->const_table)
121 g_hash_table_destroy (chunk->const_table);
127 g_string_chunk_insert (GStringChunk *fchunk,
130 GRealStringChunk *chunk = (GRealStringChunk*) fchunk;
131 gint len = strlen (string);
134 g_return_val_if_fail (chunk != NULL, NULL);
136 if ((chunk->storage_next + len + 1) > chunk->this_size)
138 gint new_size = chunk->default_size;
140 while (new_size < len+1)
143 chunk->storage_list = g_slist_prepend (chunk->storage_list,
144 g_new (char, new_size));
146 chunk->this_size = new_size;
147 chunk->storage_next = 0;
150 pos = ((char*)chunk->storage_list->data) + chunk->storage_next;
152 strcpy (pos, string);
154 chunk->storage_next += len + 1;
160 g_string_chunk_insert_const (GStringChunk *fchunk,
163 GRealStringChunk *chunk = (GRealStringChunk*) fchunk;
166 g_return_val_if_fail (chunk != NULL, NULL);
168 if (!chunk->const_table)
169 chunk->const_table = g_hash_table_new (g_str_hash, g_str_equal);
171 lookup = (char*) g_hash_table_lookup (chunk->const_table, (gchar *)string);
175 lookup = g_string_chunk_insert (fchunk, string);
176 g_hash_table_insert (chunk->const_table, lookup, lookup);
185 nearest_pow (gint num)
196 g_string_maybe_expand (GRealString* string, gint len)
198 if (string->len + len >= string->alloc)
200 string->alloc = nearest_pow (string->len + len + 1);
201 string->str = g_realloc (string->str, string->alloc);
206 g_string_sized_new (guint dfl_size)
210 G_LOCK (string_mem_chunk);
211 if (!string_mem_chunk)
212 string_mem_chunk = g_mem_chunk_new ("string mem chunk",
213 sizeof (GRealString),
214 1024, G_ALLOC_AND_FREE);
216 string = g_chunk_new (GRealString, string_mem_chunk);
217 G_UNLOCK (string_mem_chunk);
223 g_string_maybe_expand (string, MAX (dfl_size, 2));
226 return (GString*) string;
230 g_string_new (const gchar *init)
234 string = g_string_sized_new (2);
237 g_string_append (string, init);
243 g_string_free (GString *string,
246 g_return_if_fail (string != NULL);
249 g_free (string->str);
251 G_LOCK (string_mem_chunk);
252 g_mem_chunk_free (string_mem_chunk, string);
253 G_UNLOCK (string_mem_chunk);
257 g_string_assign (GString *lval,
260 g_string_truncate (lval, 0);
261 g_string_append (lval, rval);
267 g_string_truncate (GString* fstring,
270 GRealString *string = (GRealString*)fstring;
272 g_return_val_if_fail (string != NULL, NULL);
276 string->str[len] = 0;
282 g_string_append (GString *fstring,
285 GRealString *string = (GRealString*)fstring;
288 g_return_val_if_fail (string != NULL, NULL);
289 g_return_val_if_fail (val != NULL, fstring);
292 g_string_maybe_expand (string, len);
294 strcpy (string->str + string->len, val);
302 g_string_append_c (GString *fstring,
305 GRealString *string = (GRealString*)fstring;
307 g_return_val_if_fail (string != NULL, NULL);
308 g_string_maybe_expand (string, 1);
310 string->str[string->len++] = c;
311 string->str[string->len] = 0;
317 g_string_prepend (GString *fstring,
320 GRealString *string = (GRealString*)fstring;
323 g_return_val_if_fail (string != NULL, NULL);
324 g_return_val_if_fail (val != NULL, fstring);
327 g_string_maybe_expand (string, len);
329 g_memmove (string->str + len, string->str, string->len);
331 strncpy (string->str, val, len);
335 string->str[string->len] = 0;
341 g_string_prepend_c (GString *fstring,
344 GRealString *string = (GRealString*)fstring;
346 g_return_val_if_fail (string != NULL, NULL);
347 g_string_maybe_expand (string, 1);
349 g_memmove (string->str + 1, string->str, string->len);
355 string->str[string->len] = 0;
361 g_string_insert (GString *fstring,
365 GRealString *string = (GRealString*)fstring;
368 g_return_val_if_fail (string != NULL, NULL);
369 g_return_val_if_fail (val != NULL, fstring);
370 g_return_val_if_fail (pos >= 0, fstring);
371 g_return_val_if_fail (pos <= string->len, fstring);
374 g_string_maybe_expand (string, len);
376 g_memmove (string->str + pos + len, string->str + pos, string->len - pos);
378 strncpy (string->str + pos, val, len);
382 string->str[string->len] = 0;
388 g_string_insert_c (GString *fstring,
392 GRealString *string = (GRealString*)fstring;
394 g_return_val_if_fail (string != NULL, NULL);
395 g_return_val_if_fail (pos <= string->len, fstring);
397 g_string_maybe_expand (string, 1);
399 g_memmove (string->str + pos + 1, string->str + pos, string->len - pos);
401 string->str[pos] = c;
405 string->str[string->len] = 0;
411 g_string_erase (GString *fstring,
415 GRealString *string = (GRealString*)fstring;
417 g_return_val_if_fail (string != NULL, NULL);
418 g_return_val_if_fail (len >= 0, fstring);
419 g_return_val_if_fail (pos >= 0, fstring);
420 g_return_val_if_fail (pos <= string->len, fstring);
421 g_return_val_if_fail (pos + len <= string->len, fstring);
423 if (pos + len < string->len)
424 g_memmove (string->str + pos, string->str + pos + len, string->len - (pos + len));
428 string->str[string->len] = 0;
434 g_string_down (GString *fstring)
436 GRealString *string = (GRealString*)fstring;
439 g_return_val_if_fail (string != NULL, NULL);
453 g_string_up (GString *fstring)
455 GRealString *string = (GRealString*)fstring;
458 g_return_val_if_fail (string != NULL, NULL);
472 g_string_sprintfa_int (GString *string,
478 buffer = g_strdup_vprintf (fmt, args);
479 g_string_append (string, buffer);
484 g_string_sprintf (GString *string,
490 g_string_truncate (string, 0);
492 va_start (args, fmt);
493 g_string_sprintfa_int (string, fmt, args);
498 g_string_sprintfa (GString *string,
504 va_start (args, fmt);
505 g_string_sprintfa_int (string, fmt, args);