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.
27 typedef struct _GRealStringChunk GRealStringChunk;
28 typedef struct _GRealString GRealString;
30 struct _GRealStringChunk
32 GHashTable *const_table;
47 static GMemChunk *string_mem_chunk = NULL;
53 g_str_equal (gconstpointer v, gconstpointer v2)
55 return strcmp ((const gchar*) v, (const gchar*)v2) == 0;
58 /* a char* hash function from ASU */
60 g_str_hash (gconstpointer v)
62 const char *s = (char*)v;
66 for(p = s; *p != '\0'; p += 1) {
68 if ( ( g = h & 0xf0000000 ) ) {
82 g_string_chunk_new (gint default_size)
84 GRealStringChunk *new_chunk = g_new (GRealStringChunk, 1);
87 while (size < default_size)
90 new_chunk->const_table = NULL;
91 new_chunk->storage_list = NULL;
92 new_chunk->storage_next = size;
93 new_chunk->default_size = size;
94 new_chunk->this_size = size;
96 return (GStringChunk*) new_chunk;
100 g_string_chunk_free (GStringChunk *fchunk)
102 GRealStringChunk *chunk = (GRealStringChunk*) fchunk;
105 g_return_if_fail (chunk != NULL);
107 if (chunk->storage_list)
109 for (tmp_list = chunk->storage_list; tmp_list; tmp_list = tmp_list->next)
110 g_free (tmp_list->data);
112 g_slist_free (chunk->storage_list);
115 if (chunk->const_table)
116 g_hash_table_destroy (chunk->const_table);
122 g_string_chunk_insert (GStringChunk *fchunk,
125 GRealStringChunk *chunk = (GRealStringChunk*) fchunk;
126 gint len = strlen (string);
129 g_return_val_if_fail (chunk != NULL, NULL);
131 if ((chunk->storage_next + len + 1) > chunk->this_size)
133 gint new_size = chunk->default_size;
135 while (new_size < len+1)
138 chunk->storage_list = g_slist_prepend (chunk->storage_list,
139 g_new (char, new_size));
141 chunk->this_size = new_size;
142 chunk->storage_next = 0;
145 pos = ((char*)chunk->storage_list->data) + chunk->storage_next;
147 strcpy (pos, string);
149 chunk->storage_next += len + 1;
155 g_string_chunk_insert_const (GStringChunk *fchunk,
158 GRealStringChunk *chunk = (GRealStringChunk*) fchunk;
161 g_return_val_if_fail (chunk != NULL, NULL);
163 if (!chunk->const_table)
164 chunk->const_table = g_hash_table_new (g_str_hash, g_str_equal);
166 lookup = (char*) g_hash_table_lookup (chunk->const_table, (gchar *)string);
170 lookup = g_string_chunk_insert (fchunk, string);
171 g_hash_table_insert (chunk->const_table, lookup, lookup);
180 nearest_pow (gint num)
191 g_string_maybe_expand (GRealString* string, gint len)
193 if (string->len + len >= string->alloc)
195 string->alloc = nearest_pow (string->len + len + 1);
196 string->str = g_realloc (string->str, string->alloc);
201 g_string_sized_new (guint dfl_size)
205 if (!string_mem_chunk)
206 string_mem_chunk = g_mem_chunk_new ("string mem chunk",
207 sizeof (GRealString),
208 1024, G_ALLOC_AND_FREE);
210 string = g_chunk_new (GRealString, string_mem_chunk);
216 g_string_maybe_expand (string, MAX (dfl_size, 2));
219 return (GString*) string;
223 g_string_new (const gchar *init)
227 string = g_string_sized_new (2);
230 g_string_append (string, init);
236 g_string_free (GString *string,
239 g_return_if_fail (string != NULL);
242 g_free (string->str);
244 g_mem_chunk_free (string_mem_chunk, string);
248 g_string_assign (GString *lval,
251 g_string_truncate (lval, 0);
252 g_string_append (lval, rval);
258 g_string_truncate (GString* fstring,
261 GRealString *string = (GRealString*)fstring;
263 g_return_val_if_fail (string != NULL, NULL);
267 string->str[len] = 0;
273 g_string_append (GString *fstring,
276 GRealString *string = (GRealString*)fstring;
279 g_return_val_if_fail (string != NULL, NULL);
280 g_return_val_if_fail (val != NULL, fstring);
283 g_string_maybe_expand (string, len);
285 strcpy (string->str + string->len, val);
293 g_string_append_c (GString *fstring,
296 GRealString *string = (GRealString*)fstring;
298 g_return_val_if_fail (string != NULL, NULL);
299 g_string_maybe_expand (string, 1);
301 string->str[string->len++] = c;
302 string->str[string->len] = 0;
308 g_string_prepend (GString *fstring,
311 GRealString *string = (GRealString*)fstring;
314 g_return_val_if_fail (string != NULL, NULL);
315 g_return_val_if_fail (val != NULL, fstring);
318 g_string_maybe_expand (string, len);
320 g_memmove (string->str + len, string->str, string->len);
322 strncpy (string->str, val, len);
326 string->str[string->len] = 0;
332 g_string_prepend_c (GString *fstring,
335 GRealString *string = (GRealString*)fstring;
337 g_return_val_if_fail (string != NULL, NULL);
338 g_string_maybe_expand (string, 1);
340 g_memmove (string->str + 1, string->str, string->len);
346 string->str[string->len] = 0;
352 g_string_insert (GString *fstring,
356 GRealString *string = (GRealString*)fstring;
359 g_return_val_if_fail (string != NULL, NULL);
360 g_return_val_if_fail (val != NULL, fstring);
361 g_return_val_if_fail (pos >= 0, fstring);
362 g_return_val_if_fail (pos <= string->len, fstring);
365 g_string_maybe_expand (string, len);
367 g_memmove (string->str + pos + len, string->str + pos, string->len - pos);
369 strncpy (string->str + pos, val, len);
373 string->str[string->len] = 0;
379 g_string_insert_c (GString *fstring,
383 GRealString *string = (GRealString*)fstring;
385 g_return_val_if_fail (string != NULL, NULL);
386 g_return_val_if_fail (pos <= string->len, fstring);
388 g_string_maybe_expand (string, 1);
390 g_memmove (string->str + pos + 1, string->str + pos, string->len - pos);
392 string->str[pos] = c;
396 string->str[string->len] = 0;
402 g_string_erase (GString *fstring,
406 GRealString *string = (GRealString*)fstring;
408 g_return_val_if_fail (string != NULL, NULL);
409 g_return_val_if_fail (len >= 0, fstring);
410 g_return_val_if_fail (pos >= 0, fstring);
411 g_return_val_if_fail (pos <= string->len, fstring);
412 g_return_val_if_fail (pos + len <= string->len, fstring);
414 if (pos + len < string->len)
415 g_memmove (string->str + pos, string->str + pos + len, string->len - (pos + len));
419 string->str[string->len] = 0;
425 g_string_down (GString *fstring)
427 GRealString *string = (GRealString*)fstring;
430 g_return_val_if_fail (string != NULL, NULL);
444 g_string_up (GString *fstring)
446 GRealString *string = (GRealString*)fstring;
449 g_return_val_if_fail (string != NULL, NULL);
463 g_string_sprintfa_int (GString *string,
469 buffer = g_strdup_vprintf (fmt, args);
470 g_string_append (string, buffer);
475 g_string_sprintf (GString *string,
481 g_string_truncate (string, 0);
483 va_start (args, fmt);
484 g_string_sprintfa_int (string, fmt, args);
489 g_string_sprintfa (GString *string,
495 va_start (args, fmt);
496 g_string_sprintfa_int (string, fmt, args);