Start add basic prompt

hook.zsh

@@ -5,4 +5,9 @@ prompt_precmd() {
   export RPS1=`prim --rps1 --col $COLUMNS --row $LINES`
 }
 
+prompt_preexec() {
+  print -P `prim --preexec --col $COLUMNS --row $LINES`
+}
+
 add-zsh-hook precmd prompt_precmd
+add-zsh-hook preexec prompt_preexec

source/app.d

@@ -2,20 +2,18 @@ import std.stdio;
 import std.getopt;
 
 import prompt.ps1;
+import prompt.preexec;
+import style.color;
 
 struct Opt {
   bool ps1;
   bool rps1;
+  bool preexec;
 
   int col;
   int row;
 }
 
-void validate(Opt opts) {
-  if (!opts.col || !opts.row)
-    throw new Exception("--col and --row required");
-}
-
 void main(string[] argv) {
   Opt opts;
 
@@ -24,7 +22,11 @@ void main(string[] argv) {
     std.getopt.config.bundling,
     "ps1|p", "print PS1", &opts.ps1,
     "rps1|r", "print RPS1", &opts.rps1,
+    "preexec|x", "print preexec", &opts.preexec,
+
+    std.getopt.config.required,
     "col", "terminal width", &opts.col,
+    std.getopt.config.required,
     "row", "terminal height", &opts.row,
   );
 
@@ -32,11 +34,13 @@ void main(string[] argv) {
     defaultGetoptPrinter("prim", args.options);
   }
 
-  try {
-    validate(opts);
-  } catch (Exception e) {
-    defaultGetoptPrinter(e.msg ~ "\n", args.options);
+  if (opts.ps1) {
+    ps1(opts.col).setColor(Color.black).write();
   }
 
-  ps1(opts.col).write();
+  if (opts.preexec) {
+    preexec(opts.col).setColor(Color.black).write();
+  }
+
+  write(setColor("", Color.reset));
 }

source/comp/hr.d

@@ -0,0 +1,11 @@
+module comp.hr;
+
+string hr(int col) {
+  string ps;
+
+  foreach (i; 0 .. col) {
+    ps ~= '—';
+  }
+
+  return ps;
+}

source/prompt/preexec.d

@@ -0,0 +1,7 @@
+module prompt.preexec;
+
+import comp.hr;
+
+string preexec(int col) {
+  return hr(col);
+}

source/prompt/ps1.d

@@ -1,11 +1,14 @@
 module prompt.ps1;
 
+import comp.hr;
+import style.color;
+
 string ps1(int col) {
   string ps;
 
-  foreach (i; 0 .. col) {
-    ps ~= '—';
-  }
+  ps ~= hr(col);
+
+  ps ~= "> ".setColor(Color.magenta);
 
   return ps;
 }

source/style/color.d

@@ -0,0 +1,20 @@
+module style.color;
+
+import std.conv;
+
+enum Color {
+  black = 30,
+  red,
+  green,
+  yellow,
+  blue,
+  magenta,
+  cyan,
+  white,
+  def,
+  reset = 0
+}
+
+string setColor(string s, int code) {
+  return "%{\x1b[" ~ to!string(code) ~ "m%}" ~ s;
+}