1 files changed, 117 insertions, 0 deletions

diff --git a/common/utils.c b/common/utils.c
new file mode 100644
index 0000000..6803941
--- /dev/null
+++ b/common/utils.c
@@ -0,0 +1,117 @@
+/*
+        usbmuxd - iPhone/iPod Touch USB multiplex server daemon
+
+Copyright (C) 2009      Hector Martin "marcan" <hector@marcansoft.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 or version 3.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "utils.h"
+
+#ifdef USBMUXD_DAEMON
+# include "log.h"
+# define util_error(...) usbmuxd_log(LL_ERROR, __VA_ARGS__)
+#else
+# define util_error(...) fprintf(stderr, __VA_ARGS__)
+#endif
+
+void fdlist_create(struct fdlist *list)
+{
+        list->count = 0;
+        list->capacity = 4;
+        list->owners = malloc(sizeof(*list->owners) * list->capacity);
+        list->fds = malloc(sizeof(*list->fds) * list->capacity);
+}
+void fdlist_add(struct fdlist *list, enum fdowner owner, int fd, short events)
+{
+        if(list->count == list->capacity) {
+                list->capacity *= 2;
+                list->owners = realloc(list->owners, sizeof(*list->owners) * list->capacity);
+                list->fds = realloc(list->fds, sizeof(*list->fds) * list->capacity);
+        }
+        list->owners[list->count] = owner;
+        list->fds[list->count].fd = fd;
+        list->fds[list->count].events = events;
+        list->fds[list->count].revents = 0;
+        list->count++;
+}
+
+void fdlist_free(struct fdlist *list)
+{
+        list->count = 0;
+        list->capacity = 0;
+        free(list->owners);
+        list->owners = NULL;
+        free(list->fds);
+        list->fds = NULL;
+}
+
+void collection_init(struct collection *col)
+{
+        col->list = malloc(sizeof(void *));
+        memset(col->list, 0, sizeof(void *));
+        col->capacity = 1;
+}
+
+void collection_free(struct collection *col)
+{
+        free(col->list);
+        col->list = NULL;
+        col->capacity = 0;
+}
+
+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;
+                }
+        }
+        col->list = realloc(col->list, sizeof(void*) * col->capacity * 2);
+        memset(&col->list[col->capacity], 0, sizeof(void *) * col->capacity);
+        col->list[col->capacity] = element;
+        col->capacity *= 2;
+}
+
+void 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;
+                }
+        }
+        util_error("collection_remove: element %p not present in collection %p (cap %d)", element, col, col->capacity);
+}
+
+int collection_count(struct collection *col)
+{
+        int i, cnt = 0;
+        for(i=0; i<col->capacity; i++) {
+                if(col->list[i])
+                        cnt++;
+        }
+        return cnt;
+}