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.
23 #define MIN_ARRAY_SIZE 16
26 typedef struct _GRealArray GRealArray;
34 guint zero_terminated : 1;
39 static gint g_nearest_pow (gint num);
40 static void g_array_maybe_expand (GRealArray *array,
44 static GMemChunk *array_mem_chunk = NULL;
48 g_array_new (gboolean zero_terminated,
55 array_mem_chunk = g_mem_chunk_new ("array mem chunk",
57 1024, G_ALLOC_AND_FREE);
59 array = g_chunk_new (GRealArray, array_mem_chunk);
64 array->zero_terminated = (zero_terminated ? 1 : 0);
65 array->clear = (clear ? 1 : 0);
66 array->elt_size = elt_size;
68 return (GArray*) array;
72 g_array_free (GArray *array,
73 gboolean free_segment)
78 g_mem_chunk_free (array_mem_chunk, array);
82 g_array_append_vals (GArray *farray,
86 GRealArray *array = (GRealArray*) farray;
88 g_array_maybe_expand (array, len);
90 memcpy (array->data + array->elt_size * array->len, data, array->elt_size * len);
98 g_array_prepend_vals (GArray *farray,
102 GRealArray *array = (GRealArray*) farray;
104 g_array_maybe_expand (array, len);
106 g_memmove (array->data + array->elt_size * len, array->data, array->elt_size * array->len);
108 memcpy (array->data, data, len * array->elt_size);
116 g_array_set_size (GArray *farray,
119 GRealArray *array = (GRealArray*) farray;
121 if (array->len < length)
122 g_array_maybe_expand (array, length - array->len);
130 g_array_remove_index (GArray* farray,
133 GRealArray* array = (GRealArray*) farray;
135 g_return_val_if_fail (array, NULL);
137 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
139 if (index != array->len - 1)
140 g_memmove (array->data + array->elt_size * index,
141 array->data + array->elt_size * (index + 1),
142 array->elt_size * (array->len - index - 1));
144 if (array->zero_terminated)
145 memset (array->data + array->elt_size * (array->len - 1), 0,
154 g_array_remove_index_fast (GArray* farray,
157 GRealArray* array = (GRealArray*) farray;
159 g_return_val_if_fail (array, NULL);
161 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
163 if (index != array->len - 1)
164 g_memmove (array->data + array->elt_size * index,
165 array->data + array->elt_size * (array->len - 1),
168 if (array->zero_terminated)
169 memset (array->data + array->elt_size * (array->len - 1), 0,
178 g_nearest_pow (gint num)
189 g_array_maybe_expand (GRealArray *array,
192 guint want_alloc = (array->len + len + array->zero_terminated) * array->elt_size;
194 if (want_alloc > array->alloc)
196 guint old_alloc = array->alloc;
198 array->alloc = g_nearest_pow (want_alloc);
199 array->alloc = MAX (array->alloc, MIN_ARRAY_SIZE);
201 array->data = g_realloc (array->data, array->alloc);
203 if (array->clear || array->zero_terminated)
204 memset (array->data + old_alloc, 0, array->alloc - old_alloc);
211 typedef struct _GRealPtrArray GRealPtrArray;
213 struct _GRealPtrArray
220 static void g_ptr_array_maybe_expand (GRealPtrArray *array,
224 static GMemChunk *ptr_array_mem_chunk = NULL;
229 g_ptr_array_new (void)
231 GRealPtrArray *array;
233 if (!ptr_array_mem_chunk)
234 ptr_array_mem_chunk = g_mem_chunk_new ("array mem chunk",
235 sizeof (GRealPtrArray),
236 1024, G_ALLOC_AND_FREE);
238 array = g_chunk_new (GRealPtrArray, ptr_array_mem_chunk);
244 return (GPtrArray*) array;
248 g_ptr_array_free (GPtrArray *array,
249 gboolean free_segment)
251 g_return_if_fail (array);
254 g_free (array->pdata);
256 g_mem_chunk_free (ptr_array_mem_chunk, array);
260 g_ptr_array_maybe_expand (GRealPtrArray *array,
265 if ((array->len + len) > array->alloc)
267 old_alloc = array->alloc;
269 array->alloc = g_nearest_pow (array->len + len);
270 array->alloc = MAX (array->alloc, MIN_ARRAY_SIZE);
272 array->pdata = g_realloc (array->pdata, sizeof(gpointer) * array->alloc);
274 array->pdata = g_new0 (gpointer, array->alloc);
276 memset (array->pdata + old_alloc, 0, array->alloc - old_alloc);
281 g_ptr_array_set_size (GPtrArray *farray,
284 GRealPtrArray* array = (GRealPtrArray*) farray;
286 g_return_if_fail (array);
288 if (length > array->len)
289 g_ptr_array_maybe_expand (array, (length - array->len));
295 g_ptr_array_remove_index (GPtrArray* farray,
298 GRealPtrArray* array = (GRealPtrArray*) farray;
301 g_return_val_if_fail (array, NULL);
303 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
305 result = array->pdata[index];
307 if (index != array->len - 1)
308 g_memmove (array->pdata + index, array->pdata + index + 1,
309 array->len - index - 1);
311 array->pdata[array->len - 1] = NULL;
319 g_ptr_array_remove_index_fast (GPtrArray* farray,
322 GRealPtrArray* array = (GRealPtrArray*) farray;
325 g_return_val_if_fail (array, NULL);
327 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
329 result = array->pdata[index];
331 if (index != array->len - 1)
332 array->pdata[index] = array->pdata[array->len - 1];
334 array->pdata[array->len - 1] = NULL;
342 g_ptr_array_remove (GPtrArray* farray,
345 GRealPtrArray* array = (GRealPtrArray*) farray;
348 g_return_val_if_fail (array, FALSE);
350 for (i = 0; i < array->len; i += 1)
352 if (array->pdata[i] == data)
354 g_ptr_array_remove_index (farray, i);
363 g_ptr_array_remove_fast (GPtrArray* farray,
366 GRealPtrArray* array = (GRealPtrArray*) farray;
369 g_return_val_if_fail (array, FALSE);
371 for (i = 0; i < array->len; i += 1)
373 if (array->pdata[i] == data)
375 g_ptr_array_remove_index_fast (farray, i);
384 g_ptr_array_add (GPtrArray* farray,
387 GRealPtrArray* array = (GRealPtrArray*) farray;
389 g_return_if_fail (array);
391 g_ptr_array_maybe_expand (array, 1);
393 array->pdata[array->len++] = data;
399 GByteArray* g_byte_array_new (void)
401 return (GByteArray*) g_array_new (FALSE, FALSE, 1);
404 void g_byte_array_free (GByteArray *array,
405 gboolean free_segment)
407 g_array_free ((GArray*) array, free_segment);
410 GByteArray* g_byte_array_append (GByteArray *array,
414 g_array_append_vals ((GArray*) array, (guint8*)data, len);
419 GByteArray* g_byte_array_prepend (GByteArray *array,
423 g_array_prepend_vals ((GArray*) array, (guint8*)data, len);
428 GByteArray* g_byte_array_set_size (GByteArray *array,
431 g_array_set_size ((GArray*) array, length);
436 GByteArray* g_byte_array_remove_index (GByteArray *array,
439 g_array_remove_index((GArray*) array, index);
444 GByteArray* g_byte_array_remove_index_fast (GByteArray *array,
447 g_array_remove_index_fast((GArray*) array, index);