Imported Upstream version 0.8.0.4

[psensor-pkg-debian.git] / src / lib / pio.c

diff --git a/src/lib/pio.c b/src/lib/pio.c
new file mode 100644 (file)
index 0000000..d150bed
--- /dev/null
+++ b/src/lib/pio.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2010-2013 jeanfi@gmail.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 of the
+ * License, or (at your option) any later version.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+#define _LARGEFILE_SOURCE 1
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <string.h>
+#include <dirent.h>
+
+#include "pio.h"
+
+static char *path_append(const char *dir, const char *path)
+{
+       char *result;
+
+       result = malloc(strlen(dir) + 1 + strlen(path) + 1);
+
+       strcpy(result, dir);
+       strcat(result, "/");
+       strcat(result, path);
+
+       return result;
+}
+
+static char **paths_add(char **paths, int n, char *path)
+{
+       char **result;
+
+       result = malloc((n+1) * sizeof(void *));
+
+       memcpy(result + 1, paths, n * sizeof(void *));
+
+       *result = path;
+
+       return result;
+}
+
+char **dir_list(const char *dpath, int (*filter) (const char *))
+{
+       struct dirent *ent;
+       DIR *dir;
+       char **paths, *path, *name, **tmp;
+       int n;
+
+       dir = opendir(dpath);
+
+       if (!dir)
+               return NULL;
+
+       n = 1;
+       paths = malloc(sizeof(void *));
+       *paths = NULL;
+
+       while ((ent = readdir(dir)) != NULL) {
+               name = ent->d_name;
+
+               if (!strcmp(name, ".") || !strcmp(name, ".."))
+                       continue;
+
+               path = path_append(dpath, name);
+
+               if (!filter || filter(path)) {
+                       tmp = paths_add(paths, n, path);
+                       free(paths);
+                       paths = tmp;
+
+                       n++;
+               } else {
+                       free(path);
+               }
+       }
+
+       closedir(dir);
+
+       return paths;
+}
+
+void paths_free(char **paths)
+{
+       char **paths_cur;
+
+       paths_cur = paths;
+       while (*paths_cur) {
+               free(*paths_cur);
+
+               paths_cur++;
+       }
+
+       free(paths);
+}