bin/glurp

@@ -1,52 +1,61 @@
-#!/bin/sh
+#!/bin/bash
 
-error_usage() {
-    >&2 cat << EOF
-Usage :
-    glurp full|area clip|file
-EOF
-    exit 1
+# Functions
+# Error
+function error {
+    >&2 echo -e "\033[1;31mERROR:\033[0m $1"; shift
+    exit "${1:-1}"
 }
 
-screenshot_path() {
-    printf %s "/tmp/screenshot-${USER}-$(date +%N).png"
+# Throw a value
+function throw-value {
+    error "Value \"${1}\" invalid for ${2}." 1
 }
 
-grim=grim
-wl_copy_args="-t image/png"
+function screenshot-path {
+    printf '%s%s-screenshot-%s.png' "${screenshot_d}/" "${LOGNAME}" "$(date +'%Y_%m_%d_%s')"
+}
+
+# Variables
+declare -a prepend _command append
+screenshot_d=/tmp
 
 # Arguments
-case "$1" in
+selection_mode="$1"; shift
+saving_mode="$1"   ; shift
+
+# Command building
+_command+=(grim)
+case "$selection_mode" in
     full)
+        :
         ;;
     area)
-        slurp=slurp
-        pipe1='|'
-        grim_args="-g -"
+        _command+=(-g -)
+        prepend+=(slurp)
         ;;
     *)
-        error_usage
+        throw-value "$selection_mode" 'selection mode'
         ;;
 esac
-shift
-
-case "$1" in
+case "$saving_mode" in
     clip)
-        pipe2='|'
-        wl_copy=wl-copy
+        _command+=(-)
+        append+=(wl-copy -t image/png)
         ;;
     file)
-        grim_args="${grim_args} $(screenshot_path)"
+        _command+=("$(screenshot-path)")
         ;;
     *)
-        error_usage
+        throw-value "$saving_mode" 'saving mode'
         ;;
 esac
-shift
 
-[ -n "$wl_copy" ] && wl_copy="${wl_copy} ${wl_copy_args}"
+# Debug
+#echo "${prepend[@]} | ${_command[@]} | ${append[@]}"
+#exit 0
 
 # Execution
 set -xe
-"$slurp" "$pipe1" "$grim" "$grim_args" "$pipe2" "$wl_copy"
+"${prepend[@]}" | "${_command[@]}" | "${append[@]}"