From 2793ae430e77042ab5effb5a80b8b27552cd313c Mon Sep 17 00:00:00 2001
From: Tom Bereknyei <tomberek@gmail.com>
Date: Sat, 20 Jul 2024 16:37:01 -0400
Subject: [PATCH] feat: minimal flag to print less information

---
 Makefile                    |  2 +-
 pkgs/tracelinks/default.nix |  2 +-
 tracelinks.c                | 34 ++++++++++++++++++++++++----------
 3 files changed, 26 insertions(+), 12 deletions(-)

diff --git a/Makefile b/Makefile
index be4de34..3256cea 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 .DEFAULT_GOAL = all
 
 NAME = tracelinks
-VERSION = 1.0.0
+VERSION = 1.1.0
 PREFIX ?= /usr/local
 CFLAGS = -Wall -g -DVERSION='"$(VERSION)"'
 
diff --git a/pkgs/tracelinks/default.nix b/pkgs/tracelinks/default.nix
index 623c883..e79e948 100644
--- a/pkgs/tracelinks/default.nix
+++ b/pkgs/tracelinks/default.nix
@@ -1,7 +1,7 @@
 { self, stdenv, help2man }:
 stdenv.mkDerivation {
   pname = "tracelinks";
-  version = "1.0.0";
+  version = "1.1.0";
   src = self;
 
   # Prevent the source from becoming a runtime dependency.
diff --git a/tracelinks.c b/tracelinks.c
index 0df6310..35090af 100644
--- a/tracelinks.c
+++ b/tracelinks.c
@@ -10,6 +10,7 @@
 #include <unistd.h>
 #include <limits.h>
 
+static int minimal_flag = 0;
 static int debug_flag = 0;
 static int absolute_flag = 0;
 static int keep_going_flag = 0;
@@ -26,6 +27,7 @@ usage(const int rc) {
 	printf("  -a, --absolute    report paths as absolute paths\n");
 	printf("  -k, --keep-going  keep reporting on other paths after an error\n");
 	printf("  -h, --help        print this help message\n");
+	printf("  -m, --minimal     print minimal information\n");
 	printf("  -d, --debug       print extra debugging to STDERR\n");
 	printf("  -v, --version     print version string\n");
 	exit(rc);
@@ -133,7 +135,10 @@ tracelinks(int indent, const char *root, const char *path) {
 		}
 
 		print_indent(indent++);
-		printf("%s -> %.*s\n", pathbuf, (int) nbytes, linkbuf);
+		if (minimal_flag)
+			printf("%s ->\n", pathbuf);
+		else
+			printf("%s -> %.*s\n", pathbuf, (int) nbytes, linkbuf);
 
 		if (d) {
 			*d = '/';
@@ -156,14 +161,18 @@ tracelinks(int indent, const char *root, const char *path) {
 			return(tracelinks(indent, pathbuf, d+1));
 		}
 		print_indent(indent++);
-		switch (sb.st_mode & S_IFMT) {
-			case S_IFBLK:  printf("%s: block device\n", pathbuf); break;
-			case S_IFCHR:  printf("%s: character device\n", pathbuf); break;
-			case S_IFDIR:  printf("%s: directory\n", pathbuf); break;
-			case S_IFIFO:  printf("%s: FIFO/pipe\n", pathbuf); break;
-			case S_IFREG:  printf("%s: regular file\n", pathbuf); break;
-			case S_IFSOCK: printf("%s: socket\n", pathbuf); break;
-			default: printf("%s: unknown?\n", pathbuf);
+		if (minimal_flag)
+			printf("%s\n", pathbuf);
+		else {
+			switch (sb.st_mode & S_IFMT) {
+				case S_IFBLK:  printf("%s: block device\n", pathbuf); break;
+				case S_IFCHR:  printf("%s: character device\n", pathbuf); break;
+				case S_IFDIR:  printf("%s: directory\n", pathbuf); break;
+				case S_IFIFO:  printf("%s: FIFO/pipe\n", pathbuf); break;
+				case S_IFREG:  printf("%s: regular file\n", pathbuf); break;
+				case S_IFSOCK: printf("%s: socket\n", pathbuf); break;
+				default: printf("%s: unknown?\n", pathbuf);
+			}
 		}
 		if (d) {
 			warnx("extra trailing characters: %s", d+1);
@@ -183,6 +192,7 @@ main(int argc, char **argv) {
 			{"absolute",	no_argument, 0, 'a'},
 			{"keep-going",	no_argument, 0, 'k'},
 			{"version",	no_argument, 0, 'v'},
+			{"minimal",	no_argument, 0, 'm'},
 			{"debug",	no_argument, 0, 'd'},
 			{"help",	no_argument, 0, 'h'},
 			{0, 0, 0, 0}
@@ -191,7 +201,7 @@ main(int argc, char **argv) {
 		/* getopt_long stores the option index here. */
 		int option_index = 0;
 
-		c = getopt_long(argc, argv, "akvdh", long_options, &option_index);
+		c = getopt_long(argc, argv, "akvmdh", long_options, &option_index);
 
 		/* Detect the end of the options. */
 		if (c == -1)
@@ -210,6 +220,10 @@ main(int argc, char **argv) {
 				puts(VERSION);
 				exit(EXIT_SUCCESS);
 
+			case 'm':
+				minimal_flag = 1;
+				break;
+
 			case 'd':
 				debug_flag = 1;
 				break;