From 79dae3de0bdfc069a174606b26a377803c5f8f19 Mon Sep 17 00:00:00 2001
From: King_DuckZ <king_duckz@gmx.com>
Date: Thu, 25 Sep 2014 14:10:50 +0200
Subject: [PATCH] Add basic CL switches and help, version and license text.

---
 CMakeLists.txt      | 10 ++++++
 main.d              | 74 +++++++++++++++++++++++++++++++++++++++------
 tigersumConfig.d.in |  5 +++
 3 files changed, 80 insertions(+), 9 deletions(-)
 create mode 100644 tigersumConfig.d.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9534ce5..73192d8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,9 +6,19 @@ set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O3 -Wall -Wdeprecated")
 set(CMAKE_D_FLAGS_DEBUG "${CMAKE_D_FLAGS_DEBUG} -funittest -g -O0 -Wall -Wdeprecated")
 set(CMAKE_D_FLAGS_RELEASE "${CMAKE_D_FLAGS_RELEASE} -O3 -Wall -Wdeprecated")
 
+set(DEFAULT_TIGER_VERSION "1")
+set(TIGERSUM_MAJOR "0")
+set(TIGERSUM_MINOR "1")
+
+configure_file(
+	"${PROJECT_SOURCE_DIR}/${PROJECT_NAME}Config.d.in"
+	"${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.d"
+)
+
 include_directories(
 	.
 )
+add_definitions("-J${PROJECT_BINARY_DIR}")
 
 add_executable(${PROJECT_NAME}
 	sboxes.c
diff --git a/main.d b/main.d
index ffc6ffa..9509aea 100644
--- a/main.d
+++ b/main.d
@@ -18,19 +18,75 @@
 import std.stdio;
 import std.file;
 import tiger;
+import std.array;
+import std.getopt;
+
+mixin(import("tigersumConfig.d"));
 
 void main (string[] parArgs) {
 	const auto cwd = getcwd();
 	const auto working_dir = cwd ~ (cwd[$-1] == '/' ? "" : "/");
 
-	foreach (arg; parArgs[1 .. $]) {
-		const auto curr_path = working_dir ~ arg;
-		File curr_file = File(curr_path, "rb");
-		if (!isDir(curr_path)) {
-			writefln("%s  %s", tigerToString(getTiger(curr_file, true)), arg);
-		}
-		else {
-			writefln("tigersum: %s: is a directory", arg);
-		}
+	bool show_version, show_help, show_license;
+	bool check_mode;
+	ushort tiger_version = TIGER_VERSION_DEF;
+
+	getopt(parArgs,
+		"version|v", &show_version,
+		"help|h", &show_help,
+		"check|c", &check_mode,
+		"tiger|t", &tiger_version,
+		"licence|license", &show_license
+	);
+
+	if (check_mode) {
 	}
+	else if (show_help) {
+		writefln("Usage: %s [OPTION]... [FILE]...", PROGRAM_NAME);
+		writeln("  -c,   --check         Read tiger sums from FILE and check them.");
+		writeln("  -h,   --help          Show this help.");
+		writeln("  -v,   --version       Show version info and quit.");
+		writefln("  -t n, --tiger=n       Set the tiger version that should be used. Valid values are 1 or 2, %d is default.", TIGER_VERSION_DEF);
+		writefln("        --license       Show details about the license under which %s is distributed.", PROGRAM_NAME);
+	}
+	else if (show_version) {
+		writefln("%s %d.%d Copyright © %d  Michele \"King_DuckZ\" Santullo", PROGRAM_NAME, TIGERSUM_VERSION_MAJOR, TIGERSUM_VERSION_MINOR, COPYRIGHT_YEAR);
+		writeln("Using the reference tiger implementation by Ross Anderson and Eli Biham");
+		writeln("http://www.cs.technion.ac.il/~biham/Reports/Tiger/");
+		writeln();
+		writeln("This program comes with ABSOLUTELY NO WARRANTY.");
+		writeln("This is free software, and you are welcome to redistribute it");
+		writefln("under certain conditions; run %s --license for details.", PROGRAM_NAME);
+	}
+	else if (show_license) {
+		writefln("%s - a command line utility to calculate the tiger hash from input.", PROGRAM_NAME);
+		writefln("Copyright © %d  Michele \"King_DuckZ\" Santullo", COPYRIGHT_YEAR);
+		writeln();
+		writefln("%s is free software: you can redistribute it and/or modify", PROGRAM_NAME);
+		writeln("it under the terms of the GNU General Public License as published by");
+		writeln("the Free Software Foundation, either version 3 of the License, or");
+		writeln("(at your option) any later version.");
+		writeln();
+		writefln("%s is distributed in the hope that it will be useful,", PROGRAM_NAME);
+		writeln("but WITHOUT ANY WARRANTY; without even the implied warranty of");
+		writeln("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the");
+		writeln("GNU General Public License for more details.");
+		writeln();
+		writeln("You should have received a copy of the GNU General Public License");
+		writeln("along with this program.  If not, see <http://www.gnu.org/licenses/>.");
+	}
+	else {
+		//regular mode
+	}
+
+	//foreach (arg; parArgs[1 .. $]) {
+	//	const auto curr_path = working_dir ~ arg;
+	//	File curr_file = File(curr_path, "rb");
+	//	if (!isDir(curr_path)) {
+	//		writefln("%s  %s", tigerToString(getTiger(curr_file, true)), arg);
+	//	}
+	//	else {
+	//		writefln("tigersum: %s: is a directory", arg);
+	//	}
+	//}
 }
diff --git a/tigersumConfig.d.in b/tigersumConfig.d.in
new file mode 100644
index 0000000..7cbf303
--- /dev/null
+++ b/tigersumConfig.d.in
@@ -0,0 +1,5 @@
+const ushort TIGER_VERSION_DEF = @DEFAULT_TIGER_VERSION@;
+const ushort TIGERSUM_VERSION_MAJOR = @TIGERSUM_MAJOR@;
+const ushort TIGERSUM_VERSION_MINOR = @TIGERSUM_MINOR@;
+const ushort COPYRIGHT_YEAR = 2014;
+const string PROGRAM_NAME = "@PROJECT_NAME@";