From e49934c99d510c1b4294d89549cbb2a284ebb7bf Mon Sep 17 00:00:00 2001
From: James Patrick <james@jpatrick.io>
Date: Sat, 27 Apr 2019 18:09:36 -0400
Subject: [PATCH] Adding shared makefile logic and helper scripts

Shared logic can be imported via `include ../lib/shared.mk`
Helper functions include 3 current opperations

1. mk_link:: This will create a symbolic link if the file doesn't already exist.
2. rm_link:: Will remove the link if it is a symlink.
3. report :: This color codes the status of a message and adds a leading symbol.

report also can be called with `LAST_RETURN=$? report "message"`
and will expand this to be either `report info "message"` Or `report error
"message"` based on the last return value.
Current status are info, warn, and error.
---
 lib/helper/mk_link | 14 ++++++++++++++
 lib/helper/report  | 23 +++++++++++++++++++++++
 lib/helper/rm_link | 20 ++++++++++++++++++++
 lib/shared.mk      | 32 ++++++++++++++++++++++++++++++++
 4 files changed, 89 insertions(+)
 create mode 100755 lib/helper/mk_link
 create mode 100755 lib/helper/report
 create mode 100755 lib/helper/rm_link
 create mode 100644 lib/shared.mk

diff --git a/lib/helper/mk_link b/lib/helper/mk_link
new file mode 100755
index 0000000..50a3197
--- /dev/null
+++ b/lib/helper/mk_link
@@ -0,0 +1,14 @@
+#! env zsh
+REPORT=`dirname $0`/report
+
+if [ -z "$1" ] || [ -z "$2" ] ; then
+  $REPORT error "ERROR: Both to and from string must be defined.\n     source: $1 \n     symlnk: $2"
+  exit
+fi
+
+if [[ -e $2 ]] ; then
+  $REPORT warn "$2 already exist. Skipping."
+  exit
+fi
+
+$REPORT info "Symlinked `ln -svf $1 $2`"
diff --git a/lib/helper/report b/lib/helper/report
new file mode 100755
index 0000000..75794b8
--- /dev/null
+++ b/lib/helper/report
@@ -0,0 +1,23 @@
+#! env zsh
+R='\033[0;31m'
+Y='\033[0;33m'
+G='\033[0;32m'
+NC='\033[0m' # No Color
+
+format(){
+  case $1 in
+    "error") echo -e "$R x  $2$NC";;
+    "warn")  echo -e "$Y ⚠  $2$NC";;
+    "info")  echo -e "$G ✔  $2$NC";;
+    *) echo -e "$1: $2";;
+  esac
+}
+
+if [[ -z $2 ]] ; then
+  case "$LAST_RETURN" in
+    0) format info $1;;
+    *) format error "FAILURE DURING: \"$1\"";;
+  esac
+else
+  format $1 $2
+fi
diff --git a/lib/helper/rm_link b/lib/helper/rm_link
new file mode 100755
index 0000000..fa951d4
--- /dev/null
+++ b/lib/helper/rm_link
@@ -0,0 +1,20 @@
+#! env zsh
+REPORT=`dirname $0`/report
+
+if [[ -z $1 ]] ; then
+  $REPORT error "ERROR: Symlink to delete does not exist.\n     symlink: $1"
+  exit
+fi
+
+if ! ( [[ -e $1 ]] || [[ -L $1 ]] ) ; then
+  $REPORT warn "$1 does not exist."
+  exit
+fi
+
+if [[ ! -L $1 ]] ; then
+  $REPORT warn "$1 is not a symbolic link. Skipping."
+  exit
+fi
+
+$REPORT info "Deleting $1"
+rm  $1
diff --git a/lib/shared.mk b/lib/shared.mk
new file mode 100644
index 0000000..ebde197
--- /dev/null
+++ b/lib/shared.mk
@@ -0,0 +1,32 @@
+# This will make heavy use of the "$+commands[cmd]" function in bash. Make sure its installed.
+_SHELL := $(shell which zsh )
+ifndef _SHELL
+  $(error ZSH is not installed on this machine. This makefile requires ZSH features)
+endif
+SHELL := $(_SHELL)
+
+
+# Helper scripts for setting up and taking down links.
+LIB_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
+mk_link := $(LIB_DIR)/helper/mk_link
+rm_link := $(LIB_DIR)/helper/rm_link
+report  := LAST_RETURN=$$? $(LIB_DIR)/helper/report
+cmd_exist = $(shell (($$+commands[$1])) && echo true || echo false  )
+
+# Shortcut for the XDG dir if it exist. default to ~/.confg
+XDG_DIR := $${XDG_CONFIG_DIR:-~/.config}
+
+# Some things will OS specific.
+# With this you can use `$(IS_MAC) && echo "I'm a Mac" || echo "I'm not a Mac"`
+ifeq ($(shell uname), Darwin)
+  IS_MAC=true
+else
+  IS_LINUX=true
+endif
+IS_MAC?=false
+IS_LINUX?=false
+
+# TURN THIS OFF FOR DEBUGGING
+MAKEFLAGS += --silent
+
+.PHONY: install update init remove