kiss-readlink: change style, nitpicks

- use limits.h to assign the size of arrays.
- use sprintf instead of strcpy/strcat.
- use tabs of 8 characters instead of 2 spaces for indentation.
- reformat the source code based on the styles of kernel.org and suckless.org.

FossilOrigin-Name: 8f20c1368c92a49e66a9eb429503ec6901935d93af77f7af7284ab9c90101733

1 files changed, 29 insertions, 19 deletions

diff --git a/bin/kiss-readlink.c b/bin/kiss-readlink.c
index 8dc0c0f..ca65b90 100644
--- a/bin/kiss-readlink.c
+++ b/bin/kiss-readlink.c
@@ -1,5 +1,5 @@
 /* kiss-readlink --- a utility replacement for readlink
- * See LICENSE for copyright information
+ * See LICENSE for copyright information.
  *
  * This is basically a 'readlink -f' command.
  */
@@ -7,30 +7,40 @@
 #include <stdlib.h>
 #include <libgen.h>
 #include <string.h>
+#include <limits.h>
+
+#define _XOPEN_SOURCE 700
 
 char *realpath(const char *path, char *resolved_path);
 
-int main(int argc, char *argv[]) {
+int
+main(int argc, char *argv[])
+{
+
+	char buf[PATH_MAX];
 
-  char buf[512];
-  char bname[512];
-  strcpy(bname, "/");
-  strcat(bname, (basename(argv[1])));
+	/* We are going to use these if the file doesn't exist, but we can still
+	 * use directories above the file. We are using dname and bname so that
+	 * they don't clash with the functions with the same name.
+	 */
+	char dname[PATH_MAX]; /* directory name */
+	char bname[NAME_MAX]; /* base name      */
+	sprintf(bname, "%s", (basename(argv[1])));
 
-  if (argc != 2 || strcmp(argv[1], "--help") == 0) {
-    printf("usage: %s [file]\n", argv[0]);
-    return(1);
-  }
+	if (argc != 2 || strcmp(argv[1], "--help") == 0) {
+		fprintf(stderr, "usage: %s [file]\n", argv[0]);
+		return 1;
+	}
 
-  if (!realpath(argv[1], buf)) {
+	if (!realpath(argv[1], buf)) {
 
-    if (!realpath(dirname(argv[1]), buf)) {
-    perror("realpath");
-    return(1);
-    }
-    strcat(buf, bname);
-  }
+		if (!realpath(dirname(argv[1]), dname)) {
+			perror(argv[0]);
+			return 1;
+		}
+		sprintf(buf, "%s/%s", dname, bname);
+	}
 
-  printf("%s\n", buf);
-  return(0);
+	printf("%s\n", buf);
+	return(0);
 }