Merge pull request #13 from fbeline/custom-window-size

Parsing in-line args

README.md

@@ -6,6 +6,14 @@ Luneta is an interactive filter that can be easily composed within any script.
   <img width="80%" src="https://user-images.githubusercontent.com/5730881/79627815-f864bc80-8111-11ea-9a14-11ab35f1962c.gif">
 </p>
 
+## About
+
+- fast.
+- small and portable. (~ 1mb binary)
+- adaptable screen size.
+
+Run `luneta -h` for help.
+
 ## Usage examples
 
 Pick a command in your shell history:

dub.json

@@ -9,7 +9,7 @@
 		"fuzzyd": "1.0.0-beta",
 		"ncurses": "~master"
 	},
-	"description": "Terminal fuzzy search",
+	"description": "Luneta is an interactive filter that can be easily composed within any script.",
 	"license": "MIT",
 	"name": "luneta"
 }

source/luneta/app.d

@@ -1,14 +1,15 @@
 import std.stdio;
 import std.string;
-import std.conv;
-import std.typecons;
-import std.algorithm;
-import std.array;
+import std.getopt;
 import fuzzyd.core;
 import deimos.ncurses.curses;
 import luneta.printers;
 import luneta.keyboard;
 import luneta.window;
+import luneta.opts;
+
+private:
+const string VERSION = "v1.0.0";
 
 string[] parseStdin()
 {
@@ -39,8 +40,29 @@ void delegate() loop(fuzzyFn fzy, ref string result)
     };
 }
 
-int main()
+public:
+int main(string[] args)
 {
+
+    int height;
+    bool _version;
+    auto helpInformation = getopt(
+        args,
+        std.getopt.config.passThrough,
+        "height", "set the maximum window height (number of lines), e.g --height 25", &height,
+        "version|v", "version", &_version);
+    luneta.opts.initialize(height);
+
+    if (helpInformation.helpWanted)
+    {
+        defaultGetoptPrinter("usage: luneta [options]", helpInformation.options);
+        return 0;
+    }
+    if (_version) {
+        writeln(VERSION);
+        return 0;
+    }
+
     auto fzy = fuzzy(parseStdin());
     string result;
     init(loop(fzy, result));

source/luneta/opts.d

@@ -0,0 +1,9 @@
+module luneta.opts;
+
+static int height = 22;  /// window height
+
+/// initialize application options
+void initialize(int _height) {
+    if (_height > 0)
+        height = _height;
+}

source/luneta/printers.d

@@ -30,7 +30,7 @@ void printMatches(KeyProcessor kp)
                 mvprintw(line, i + 2, m.value[i].to!string);
             }
         }
-        if (m.value.length > getWindowSize.width)
+        if (m.value.length > getWindowSize.width-1)
         {
             mvprintw(line, getWindowSize.width-2, "...");
         }

source/luneta/window.d

@@ -4,8 +4,7 @@ import std.stdio;
 import std.algorithm;
 import std.string : toStringz;
 import deimos.ncurses.curses;
-
-private const MAX_L = 22;
+import luneta.opts;
 
 /// window size
 struct Wsize
@@ -17,7 +16,7 @@ struct Wsize
 /// get window size
 Wsize getWindowSize()
 {
-    return Wsize(getmaxx(stdscr), min(MAX_L, getmaxy(stdscr)));
+    return Wsize(getmaxx(stdscr), min(luneta.opts.height, getmaxy(stdscr)));
 }
 
 /// ncurses mvprintw wrapper