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authorGravatar Nikias Bassen2021-06-07 02:01:35 +0200
committerGravatar Nikias Bassen2021-06-07 03:41:07 +0200
commit046b26150e004a8ac740e699c6c3e11be29e8f11 (patch)
tree8f59597463dccd81ca180a87668e53864c4b09ae /src/collection.c
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Initial check-in of sources
Diffstat (limited to 'src/collection.c')
-rw-r--r--src/collection.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/src/collection.c b/src/collection.c
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+++ b/src/collection.c
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+/*
+ * collection.c
+ *
+ * Copyright (C) 2009 Hector Martin <hector@marcansoft.com>
+ * Copyright (C) 2009 Nikias Bassen <nikias@gmx.li>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "common.h"
+#include "libimobiledevice-glue/collection.h"
+
+#undef NDEBUG // we need to make sure we still get assertions because we can't handle memory allocation errors
+#include <assert.h>
+
+#define INIT_NULL(addr, count) { unsigned int i_ = 0; for (i_ = 0; i_ < (count); i_++) ((void**)(addr))[i_] = NULL; }
+
+#define CAPACITY_STEP 8
+
+LIBIMOBILEDEVICE_GLUE_API void collection_init(struct collection *col)
+{
+ col->list = malloc(sizeof(void *) * CAPACITY_STEP);
+ assert(col->list);
+ INIT_NULL(col->list, CAPACITY_STEP);
+ col->capacity = CAPACITY_STEP;
+}
+
+LIBIMOBILEDEVICE_GLUE_API void collection_free(struct collection *col)
+{
+ free(col->list);
+ col->list = NULL;
+ col->capacity = 0;
+}
+
+LIBIMOBILEDEVICE_GLUE_API void collection_add(struct collection *col, void *element)
+{
+ int i;
+ for(i=0; i<col->capacity; i++) {
+ if(!col->list[i]) {
+ col->list[i] = element;
+ return;
+ }
+ }
+ void **newlist = realloc(col->list, sizeof(void*) * (col->capacity + CAPACITY_STEP));
+ assert(newlist);
+ col->list = newlist;
+ INIT_NULL(&col->list[col->capacity], CAPACITY_STEP);
+ col->list[col->capacity] = element;
+ col->capacity += CAPACITY_STEP;
+}
+
+LIBIMOBILEDEVICE_GLUE_API int collection_remove(struct collection *col, void *element)
+{
+ int i;
+ for(i=0; i<col->capacity; i++) {
+ if(col->list[i] == element) {
+ col->list[i] = NULL;
+ return 0;
+ }
+ }
+ fprintf(stderr, "%s: WARNING: element %p not present in collection %p (cap %d)", __func__, element, col, col->capacity);
+ return -1;
+}
+
+LIBIMOBILEDEVICE_GLUE_API int collection_count(struct collection *col)
+{
+ int i, cnt = 0;
+ for(i=0; i<col->capacity; i++) {
+ if(col->list[i])
+ cnt++;
+ }
+ return cnt;
+}
+
+LIBIMOBILEDEVICE_GLUE_API void collection_copy(struct collection *dest, struct collection *src)
+{
+ if (!dest || !src) return;
+ dest->capacity = src->capacity;
+ dest->list = malloc(sizeof(void*) * src->capacity);
+ memcpy(dest->list, src->list, sizeof(void*) * src->capacity);
+}