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_insert_vals (GArray *farray,
121 GRealArray *array = (GRealArray*) farray;
123 g_array_maybe_expand (array, len);
125 g_memmove (array->data + array->elt_size * (len + index),
126 array->data + array->elt_size * index,
127 array->elt_size * (array->len - index));
129 memcpy (array->data + array->elt_size * index, data, len * array->elt_size);
137 g_array_set_size (GArray *farray,
140 GRealArray *array = (GRealArray*) farray;
142 if (array->len < length)
143 g_array_maybe_expand (array, length - array->len);
151 g_array_remove_index (GArray* farray,
154 GRealArray* array = (GRealArray*) farray;
156 g_return_val_if_fail (array, NULL);
158 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
160 if (index != array->len - 1)
161 g_memmove (array->data + array->elt_size * index,
162 array->data + array->elt_size * (index + 1),
163 array->elt_size * (array->len - index - 1));
165 if (array->zero_terminated)
166 memset (array->data + array->elt_size * (array->len - 1), 0,
175 g_array_remove_index_fast (GArray* farray,
178 GRealArray* array = (GRealArray*) farray;
180 g_return_val_if_fail (array, NULL);
182 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
184 if (index != array->len - 1)
185 g_memmove (array->data + array->elt_size * index,
186 array->data + array->elt_size * (array->len - 1),
189 if (array->zero_terminated)
190 memset (array->data + array->elt_size * (array->len - 1), 0,
199 g_nearest_pow (gint num)
210 g_array_maybe_expand (GRealArray *array,
213 guint want_alloc = (array->len + len + array->zero_terminated) * array->elt_size;
215 if (want_alloc > array->alloc)
217 guint old_alloc = array->alloc;
219 array->alloc = g_nearest_pow (want_alloc);
220 array->alloc = MAX (array->alloc, MIN_ARRAY_SIZE);
222 array->data = g_realloc (array->data, array->alloc);
224 if (array->clear || array->zero_terminated)
225 memset (array->data + old_alloc, 0, array->alloc - old_alloc);
232 typedef struct _GRealPtrArray GRealPtrArray;
234 struct _GRealPtrArray
241 static void g_ptr_array_maybe_expand (GRealPtrArray *array,
245 static GMemChunk *ptr_array_mem_chunk = NULL;
250 g_ptr_array_new (void)
252 GRealPtrArray *array;
254 if (!ptr_array_mem_chunk)
255 ptr_array_mem_chunk = g_mem_chunk_new ("array mem chunk",
256 sizeof (GRealPtrArray),
257 1024, G_ALLOC_AND_FREE);
259 array = g_chunk_new (GRealPtrArray, ptr_array_mem_chunk);
265 return (GPtrArray*) array;
269 g_ptr_array_free (GPtrArray *array,
270 gboolean free_segment)
272 g_return_if_fail (array);
275 g_free (array->pdata);
277 g_mem_chunk_free (ptr_array_mem_chunk, array);
281 g_ptr_array_maybe_expand (GRealPtrArray *array,
286 if ((array->len + len) > array->alloc)
288 old_alloc = array->alloc;
290 array->alloc = g_nearest_pow (array->len + len);
291 array->alloc = MAX (array->alloc, MIN_ARRAY_SIZE);
293 array->pdata = g_realloc (array->pdata, sizeof(gpointer) * array->alloc);
295 array->pdata = g_new0 (gpointer, array->alloc);
297 memset (array->pdata + old_alloc, 0, array->alloc - old_alloc);
302 g_ptr_array_set_size (GPtrArray *farray,
305 GRealPtrArray* array = (GRealPtrArray*) farray;
307 g_return_if_fail (array);
309 if (length > array->len)
310 g_ptr_array_maybe_expand (array, (length - array->len));
316 g_ptr_array_remove_index (GPtrArray* farray,
319 GRealPtrArray* array = (GRealPtrArray*) farray;
322 g_return_val_if_fail (array, NULL);
324 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
326 result = array->pdata[index];
328 if (index != array->len - 1)
329 g_memmove (array->pdata + index, array->pdata + index + 1,
330 array->len - index - 1);
332 array->pdata[array->len - 1] = NULL;
340 g_ptr_array_remove_index_fast (GPtrArray* farray,
343 GRealPtrArray* array = (GRealPtrArray*) farray;
346 g_return_val_if_fail (array, NULL);
348 g_return_val_if_fail (index >= 0 && index < array->len, NULL);
350 result = array->pdata[index];
352 if (index != array->len - 1)
353 array->pdata[index] = array->pdata[array->len - 1];
355 array->pdata[array->len - 1] = NULL;
363 g_ptr_array_remove (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 (farray, i);
384 g_ptr_array_remove_fast (GPtrArray* farray,
387 GRealPtrArray* array = (GRealPtrArray*) farray;
390 g_return_val_if_fail (array, FALSE);
392 for (i = 0; i < array->len; i += 1)
394 if (array->pdata[i] == data)
396 g_ptr_array_remove_index_fast (farray, i);
405 g_ptr_array_add (GPtrArray* farray,
408 GRealPtrArray* array = (GRealPtrArray*) farray;
410 g_return_if_fail (array);
412 g_ptr_array_maybe_expand (array, 1);
414 array->pdata[array->len++] = data;
420 GByteArray* g_byte_array_new (void)
422 return (GByteArray*) g_array_new (FALSE, FALSE, 1);
425 void g_byte_array_free (GByteArray *array,
426 gboolean free_segment)
428 g_array_free ((GArray*) array, free_segment);
431 GByteArray* g_byte_array_append (GByteArray *array,
435 g_array_append_vals ((GArray*) array, (guint8*)data, len);
440 GByteArray* g_byte_array_prepend (GByteArray *array,
444 g_array_prepend_vals ((GArray*) array, (guint8*)data, len);
449 GByteArray* g_byte_array_set_size (GByteArray *array,
452 g_array_set_size ((GArray*) array, length);
457 GByteArray* g_byte_array_remove_index (GByteArray *array,
460 g_array_remove_index((GArray*) array, index);
465 GByteArray* g_byte_array_remove_index_fast (GByteArray *array,
468 g_array_remove_index_fast((GArray*) array, index);