Add help, usage, and version options for woff2_compress + woff2_decompress

src/woff2_compress.cc

@@ -6,20 +6,37 @@
 
 /* A commandline tool for compressing ttf format files to woff2. */
 
-#include <string>
-
-#include "file.h"
-#include <woff2/encode.h>
-
+#include "woff2_compress.h"
 
 int main(int argc, char **argv) {
   using std::string;
 
   if (argc != 2) {
-    fprintf(stderr, "One argument, the input filename, must be provided.\n");
+    fprintf(stderr, "Please include an argument with your command.\n");
+    fprintf(stderr, "%s\n", USAGESTRING.c_str());
     return 1;
   }
 
+  string argument = argv[1];
+  if (argument == "--help" || argument == "-h") {
+    fprintf(stdout, "%s\n", APPLICATION.c_str());
+    fprintf(stdout, "%s\n", AUTHOR.c_str());
+    fprintf(stdout, "%s\n", LICENSE.c_str());
+    fprintf(stdout, "\n%s\n", HELPSTRING.c_str());
+    fprintf(stdout, "\n%s\n", USAGESTRING.c_str());
+    return 0;
+  }
+
+  if (argument == "--usage") {
+    fprintf(stdout, "%s\n", USAGESTRING.c_str());
+    return 0;
+  }
+
+  if (argument == "--version" || argument == "-v") {
+    fprintf(stdout, "%s %s\n", APPLICATION.c_str(), VERSION.c_str());
+    return 0;
+  }
+
   string filename(argv[1]);
   string outfilename = filename.substr(0, filename.find_last_of(".")) + ".woff2";
   fprintf(stdout, "Processing %s => %s\n",

src/woff2_compress.h

@@ -0,0 +1,23 @@
+/* Copyright 2018 Google Inc. All Rights Reserved.
+
+   Distributed under MIT license.
+   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+#ifndef WOFF2_WOFF2_COMPRESS_H_
+#define WOFF2_WOFF2_COMPRESS_H_
+
+#include <string>
+
+#include "file.h"
+#include <woff2/encode.h>
+
+#define VERSION string("v1.0.3")
+
+#define APPLICATION string("woff2_compress")
+#define AUTHOR string("Copyright 2013 Google Inc.")
+#define LICENSE string("MIT License")
+#define HELPSTRING string("Include a single *.ttf or *.otf font file path argument to compile to a *.woff2 font file.")
+#define USAGESTRING string("Usage: woff2_compress [font file path]")
+
+#endif // WOFF2_WOFF2_COMPRESS_H_

src/woff2_decompress.cc

@@ -7,18 +7,35 @@
 /* A very simple commandline tool for decompressing woff2 format files to true
    type font files. */
 
-#include <string>
-
-#include "./file.h"
-#include <woff2/decode.h>
-
+#include "woff2_decompress.h"
 
 int main(int argc, char **argv) {
   using std::string;
 
   if (argc != 2) {
-    fprintf(stderr, "One argument, the input filename, must be provided.\n");
-    return 1;
+      fprintf(stderr, "Please include an argument with your command.\n");
+      fprintf(stderr, "%s\n", USAGESTRING.c_str());
+      return 1;
+  }
+
+  string argument = argv[1];
+  if (argument == "--help" || argument == "-h") {
+      fprintf(stdout, "%s\n", APPLICATION.c_str());
+      fprintf(stdout, "%s\n", AUTHOR.c_str());
+      fprintf(stdout, "%s\n", LICENSE.c_str());
+      fprintf(stdout, "\n%s\n", HELPSTRING.c_str());
+      fprintf(stdout, "\n%s\n", USAGESTRING.c_str());
+      return 0;
+  }
+
+  if (argument == "--usage") {
+      fprintf(stdout, "%s\n", USAGESTRING.c_str());
+      return 0;
+  }
+
+  if (argument == "--version" || argument == "-v") {
+      fprintf(stdout, "%s %s\n", APPLICATION.c_str(), VERSION.c_str());
+      return 0;
   }
 
   string filename(argv[1]);

src/woff2_decompress.h

@@ -0,0 +1,23 @@
+/* Copyright 2018 Google Inc. All Rights Reserved.
+
+   Distributed under MIT license.
+   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+#ifndef WOFF2_WOFF2_DECOMPRESS_H_
+#define WOFF2_WOFF2_DECOMPRESS_H_
+
+#include <string>
+
+#include "file.h"
+#include <woff2/decode.h>
+
+#define VERSION string("v1.0.3")
+
+#define APPLICATION string("woff2_decompress")
+#define AUTHOR string("Copyright 2013 Google Inc.")
+#define LICENSE string("MIT License")
+#define HELPSTRING string("Include a single *.woff2 font file path argument to decode to a *.ttf font.")
+#define USAGESTRING string("Usage: woff2_decompress [font file path]")
+
+#endif // WOFF2_WOFF2_DECOMPRESS_H_