Add script to apply stow config to the current host

NB23-G89HHX3.hogent.be.dirs

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+ansible
+bash
+code
+fontconfig
+git
+linters
+scripts
+vim
+

apply.sh

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+#! /usr/bin/env bash
+#
+# Author: Bert Van Vreckem <[email protected]>
+#
+#/ Usage: SCRIPTNAME [OPTIONS]...
+#/
+#/ Install the dotfiles on the current host using GNU Stow
+#/
+#/ OPTIONS
+#/   -h, --help
+#/                Print this help message
+#/   -n, --noop
+#/                Print what would be installed without actually executing
+#/
+#/ EXAMPLES
+#/  
+
+
+#{{{ Bash settings
+# abort on nonzero exitstatus
+set -o errexit
+# abort on unbound variable
+set -o nounset
+# don't hide errors within pipes
+set -o pipefail
+#}}}
+#{{{ Variables
+IFS=$'\t\n'   # Split on newlines and tabs (but not on spaces)
+script_name=$(basename "${0}")
+script_dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+
+# Debug info ('on' to enable)
+readonly debug='on'
+
+# File containing the directories to install on this host
+stow_dirs="$(hostname).dirs"
+
+# If `yes`, run stow with the --no option
+noop=no
+
+readonly script_name script_dir stow_dirs
+#}}}
+
+main() {
+  process_args "${@}"
+
+  if ! which stow &> /dev/null; then
+    error "Command 'stow' not found, install it first!"
+    exit 1
+  fi
+
+  if [ ! -f "${stow_dirs}" ]; then
+    error "I have no rules for this host."
+    error "Create file '${stow_dirs}' with a list of directories to install"
+    exit 1
+  fi
+
+  while read -r dir; do
+    [ "${dir}" = '' ] && break
+    log "Installing dir: ${dir}"
+    if [ "${noop}" = 'yes' ]; then
+      stow --target="${HOME}" --verbose=2 --no "${dir}"
+    else
+      stow --target="${HOME}" --verbose=2 "${dir}"
+    fi
+  done < "$(hostname).dirs"
+}
+
+#{{{ Helper functions
+
+# Usage: process_args "${@}"
+process_args() {
+  for arg in "${@}"; do
+    case "${arg}" in
+      -h|--help)
+        usage
+        exit 0
+        ;;
+      -n|--no)
+        noop=yes
+        ;;
+      -*)
+        error "Unknow option: ${arg}"
+        usage
+        exit 2
+        ;;
+      *)
+        error "This script does not take arguments"
+        usage
+        exit 2
+        ;;
+    esac
+  done
+}
+
+# Print usage message on stdout by parsing start of script comments
+# The comment should start with #/ followed by either a newline or a space
+usage() {
+  grep '^#/' "${script_dir}/${script_name}" | sed 's/^#\/\($\| \)//'
+}
+
+# Usage: log [ARG]...
+#
+# Prints all arguments on the standard output stream
+log() {
+  printf 'ℹ️  \e[0;34m%s\e[0m\n' "${*}"
+}
+
+# Usage: debug [ARG]...
+#
+# Prints all arguments on the standard output stream,
+# if debug output is enabled
+debug() {
+  [ "${debug}" != 'on' ] || printf '🪲 \e[0;36mi%s\e[0m\n' "${*}"
+}
+
+# Usage: error [ARG]...
+#
+# Prints all arguments on the standard error stream
+error() {
+  printf '🔥 \e[0;31m%s\e[0m\n' "${*}" 1>&2
+}
+
+#}}}
+
+main "${@}"
+