Switch heredoc & BASH_SOURCE to POSIX compliant

[xdg-ninja.git] / xdg-ninja.sh

diff --git a/xdg-ninja.sh b/xdg-ninja.sh
index ee84cf0634da9675b6d018eae6f367f29815542c..aa751bd307c4bc063308e2ef61aaefe5f0950e36 100755 (executable)
--- a/xdg-ninja.sh
+++ b/xdg-ninja.sh
@@ -1,7 +1,8 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
+# shellcheck disable=SC2016
 
 USE_GLOW=true
-if ! command -v glow &>/dev/null; then
+if ! command -v glow >/dev/null 2>/dev/null; then
     printf "Glow not found, markdown rendering not available."
     printf "Output will be raw markdown and might look weird."
     printf "Install glow for easier reading & copy-paste."
@@ -64,7 +65,7 @@ if [ -z "${XDG_RUNTIME_DIR}" ]; then
     printf '\e[1;36m    ⤷ \e[1mThe recommended value is: \e[1;3m/run/user/$UID\e[1;0m\n'
 fi
 
-if ! command -v jq &>/dev/null; then
+if ! command -v jq >/dev/null 2>/dev/null; then
     printf "jq is needed to run this script, but it wasn't found. Please install it to be able to use this script."
     exit
 fi
@@ -74,9 +75,9 @@ printf "\n"
 # Function to expand environment variables in string
 # https://stackoverflow.com/a/20316582/11110290
 apply_shell_expansion() {
-    declare data="$1"
-    declare delimiter="__apply_shell_expansion_delimiter__"
-    declare command="cat <<$delimiter"$'\n'"$data"$'\n'"$delimiter"
+    data="$1"
+    delimiter="__apply_shell_expansion_delimiter__"
+    command=$(printf "cat <<%s\n%s\n%s" "$delimiter" "$data" "$delimiter")
     eval "$command"
 }
 
@@ -171,14 +172,16 @@ check_program() {
 
     while IFS= read -r file; do
         check_file "$file" "$NAME"
-    done <<<"$(printf "%s" "$INPUT" | jq -rc '.files[]')"
+    done <<EOF
+$(echo "$INPUT" | jq -rc '.files[]')
+EOF
 }
 
 # Loops over all files in the programs/ directory and calls check_program
 enumerate_programs() {
     printf "\e[1;3mStarting to check your \e[1;36m\$HOME.\e[1;0m\n"
     printf "\n"
-       for prog_filename in "$(dirname "${BASH_SOURCE[0]}")"/programs/*; do
+    for prog_filename in "${0%/*}"/programs/*; do
         check_program "$(cat "$prog_filename")"
     done
     printf "\e[1;3mDone checking your \e[1;36m\$HOME.\e[1;0m\n"