From: Rafał Długołęcki <rafal@dlugolecki.net.pl>
Date: Thu, 18 Aug 2016 23:24:17 +0000 (+0200)
Subject: Initial commit
X-Git-Tag: 0.1^0
X-Git-Url: https://git.dlugolecki.net.pl/?a=commitdiff_plain;p=mkdir_p.git

Initial commit
---

21546c9dda3da46d98e84f477e3168866c37cb67
diff --git a/README b/README
new file mode 100644
index 0000000..83b8181
--- /dev/null
+++ b/README
@@ -0,0 +1,4 @@
+mkdir_p, a very simple `mkdir -p` implementation in C
+======================================================
+
+Just a simple helper code for recursively creating directories.
diff --git a/mkdir_p.c b/mkdir_p.c
new file mode 100644
index 0000000..54f1377
--- /dev/null
+++ b/mkdir_p.c
@@ -0,0 +1,89 @@
+/*
+ * mkdir_p, a very simple `mkdir -p` implementation in C
+ * Copyright (C) 2016  Rafał Długołęcki
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "mkdir_p.h"
+
+int mkdir_p(const char *pathname, mode_t mode)
+{
+	int i = 0;
+	int error = 0;
+	char * path = NULL;
+	int len = 0;
+	
+	if (pathname == NULL) {
+		return -1;
+	}
+	
+	len = strlen(pathname);
+
+	if (pathname[0] == MKDIR_P_SEPARATOR) {
+		i = 1;
+	}
+
+	while ((i <= len) && !error) {
+		if ((i + 1 < len) && (pathname[i + 1] == MKDIR_P_SEPARATOR)) {
+			path = malloc(sizeof(char) * (i + 2));
+			strncpy(path, pathname, i + 1);
+			path[i + 1] = '\0';
+		}
+		else if ((i + 1 == len) && (pathname[i] != MKDIR_P_SEPARATOR)) {
+			path = malloc(sizeof(char) * (i + 2));
+			strncpy(path, pathname, i + 1);
+			path[i + 1] = '\0';
+		}
+
+
+		if (path != NULL) {
+			error = mkdir(path, mode);
+
+			if ((error != 0) && (errno != EEXIST)) {
+				perror("Unable to create directory");
+			}
+			else {
+				error = 0;
+			}
+
+			free(path);
+			path = NULL;
+		}
+		i++;
+	}
+
+	return error;
+}
+
+#ifdef _MKDIR_P_STANDALONE
+
+int main(int argc, char ** argv)
+{
+	if (argc == 2) {
+		return mkdir_p(argv[1], 0700);
+	}
+	else {
+		puts("mkdir_p, a very simple `mkdir -p` implementation in C");
+		puts("Version: " MKDIR_P_VERSION);
+		puts("\n\tUsage: mkdir_p PATH\n\n");
+	}
+	
+	return 0;
+}
+
+#endif /* _MKDIR_P_STANDALONE */
diff --git a/mkdir_p.h b/mkdir_p.h
new file mode 100644
index 0000000..b15c58b
--- /dev/null
+++ b/mkdir_p.h
@@ -0,0 +1,32 @@
+/*
+ * mkdir_p, a very simple `mkdir -p` implementation in C
+ * Copyright (C) 2016  Rafał Długołęcki
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ */
+
+#ifndef __MKDIR_P_H
+#define __MKDIR_P_H
+
+#include <sys/types.h>
+
+#define MKDIR_P_VERSION "0.1"
+#define MKDIR_P_SEPARATOR '/'
+
+/**
+ * Creates directory, when parent directories are missing, creates them too
+ *
+ * @param pathname NULL terminated string containing directory path
+ * @param mode specifies permissions for created directories (parameter is
+ *             passed directly to the mkdir)
+ */
+int mkdir_p(const char *pathname, mode_t mode);
+
+#endif /* __MKDIR_P_H */