From b7b9357964d4b23ed50d561d99684d9085221826 Mon Sep 17 00:00:00 2001
From: Pavel Krajcevski <krajcevski@gmail.com>
Date: Sat, 11 Apr 2015 13:21:11 -0700
Subject: [PATCH] Add help command line option

---
 CLTool/src/tc.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CLTool/src/tc.cpp b/CLTool/src/tc.cpp
index 3ac67ee..87b16f3 100644
--- a/CLTool/src/tc.cpp
+++ b/CLTool/src/tc.cpp
@@ -75,6 +75,7 @@
 void PrintUsage() {
   fprintf(stderr, "Usage: tc [OPTIONS] imagefile\n");
   fprintf(stderr, "\n");
+  fprintf(stderr, "\t-h|--help\tPrint this help.\n");
   fprintf(stderr, "\t-v\t\tVerbose mode: prints out Entropy, Mean Local Entropy, and MSSIM\n");
   fprintf(stderr, "\t-f <fmt>\tFormat to use. Either \"BPTC\", \"ETC1\", \"DXT1\", \"DXT5\", or \"PVRTC\". Default: BPTC\n");
   fprintf(stderr, "\t-l\t\tSave an output log.\n");
@@ -181,6 +182,11 @@ int main(int argc, char **argv) {
       continue;
     }
 
+    if (strcmp(argv[fileArg], "-h") == 0 || strcmp(argv[fileArg], "--help") == 0) {
+      PrintUsage();
+      exit(0);
+    }
+
     if (strcmp(argv[fileArg], "-d") == 0) {
       fileArg++;