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;
33 guint zero_terminated;
37 static gint g_nearest_pow (gint num);
38 static void g_array_maybe_expand (GRealArray *array,
42 static GMemChunk *array_mem_chunk = NULL;
46 g_array_new (gint zero_terminated)
51 array_mem_chunk = g_mem_chunk_new ("array mem chunk",
53 1024, G_ALLOC_AND_FREE);
55 array = g_chunk_new (GRealArray, array_mem_chunk);
60 array->zero_terminated = (zero_terminated ? 1 : 0);
62 return (GArray*) array;
66 g_array_free (GArray *array,
72 g_mem_chunk_free (array_mem_chunk, array);
76 g_rarray_append (GArray *array,
80 g_array_maybe_expand ((GRealArray*) array, size);
82 memcpy (array->data + array->len, data, size);
90 g_rarray_prepend (GArray *array,
94 g_array_maybe_expand ((GRealArray*) array, size);
96 g_memmove (array->data + size, array->data, array->len);
97 memcpy (array->data, data, size);
105 g_rarray_truncate (GArray *array,
110 memset (array->data + length * size, 0, size);
111 array->len = length * size;
117 g_nearest_pow (gint num)
128 g_array_maybe_expand (GRealArray *array,
133 if ((array->len + len) > array->alloc)
135 old_alloc = array->alloc;
137 array->alloc = g_nearest_pow (array->len + array->zero_terminated + len);
138 array->alloc = MAX (array->alloc, MIN_ARRAY_SIZE);
139 array->data = g_realloc (array->data, array->alloc);
141 memset (array->data + old_alloc, 0, array->alloc - old_alloc);
148 typedef struct _GRealPtrArray GRealPtrArray;
150 struct _GRealPtrArray
157 static void g_ptr_array_maybe_expand (GRealPtrArray *array,
161 static GMemChunk *ptr_array_mem_chunk = NULL;
168 GRealPtrArray *array;
170 if (!ptr_array_mem_chunk)
171 ptr_array_mem_chunk = g_mem_chunk_new ("array mem chunk",
172 sizeof (GRealPtrArray),
173 1024, G_ALLOC_AND_FREE);
175 array = g_chunk_new (GRealPtrArray, ptr_array_mem_chunk);
181 return (GPtrArray*) array;
185 g_ptr_array_free (GPtrArray *array,
186 gboolean free_segment)
188 g_return_if_fail (array);
191 g_free (array->pdata);
193 g_mem_chunk_free (ptr_array_mem_chunk, array);
197 g_ptr_array_maybe_expand (GRealPtrArray *array,
202 if ((array->len + len) > array->alloc)
204 old_alloc = array->alloc;
206 array->alloc = g_nearest_pow (array->len + len);
207 array->alloc = MAX (array->alloc, MIN_ARRAY_SIZE);
209 array->pdata = g_realloc (array->pdata, sizeof(gpointer) * array->alloc);
211 array->pdata = g_new0 (gpointer, array->alloc);
213 memset (array->pdata + old_alloc, 0, array->alloc - old_alloc);
218 g_ptr_array_set_size (GPtrArray *farray,
221 GRealPtrArray* array = (GRealPtrArray*) farray;
223 g_return_if_fail (array);
225 if (length > array->len)
226 g_ptr_array_maybe_expand (array, (length - array->len));
232 g_ptr_array_remove_index (GPtrArray* farray,
235 GRealPtrArray* array = (GRealPtrArray*) farray;
237 g_return_if_fail (array);
239 g_return_if_fail (index >= array->len);
241 array->pdata[index] = array->pdata[array->len - 1];
243 array->pdata[array->len - 1] = NULL;
249 g_ptr_array_remove (GPtrArray* farray,
252 GRealPtrArray* array = (GRealPtrArray*) farray;
255 g_return_val_if_fail (array, FALSE);
257 for (i = 0; i < array->len; i += 1)
259 if (array->pdata[i] == data)
261 g_ptr_array_remove_index (farray, i);
270 g_ptr_array_add (GPtrArray* farray,
273 GRealPtrArray* array = (GRealPtrArray*) farray;
275 g_return_if_fail (array);
277 g_ptr_array_maybe_expand (array, 1);
279 array->pdata[array->len++] = data;
285 GByteArray* g_byte_array_new (void)
287 return (GByteArray*) g_array_new (FALSE);
290 void g_byte_array_free (GByteArray *array,
293 g_array_free ((GArray*) array, free_segment);
296 GByteArray* g_byte_array_append (GByteArray *array,
300 g_rarray_append ((GArray*) array, (guint8*)data, len);
305 GByteArray* g_byte_array_prepend (GByteArray *array,
309 g_rarray_prepend ((GArray*) array, (guint8*)data, len);
314 GByteArray* g_byte_array_truncate (GByteArray *array,
317 g_rarray_truncate ((GArray*) array, length, 1);