link2file.sh - Replaces macOS alias or symlink with the file it points to

link2file.sh

#!/bin/sh

# link2file /path/to/item1 /path/to/item2 …
#
# - Checks per each item that is is a macOS alias or a symlink and its target is a regular file
# - Replaces each alias or symlink with the file it points to
# - Names the newly created file with the filename of the alias/symlink it replaces
#   - and if that alias has no extension, uses the extension of the file it points to
#   - and if that file has no extension either, the newly created file has none too.
# - Is fast and space-efficient on APFS (copy-on-write).
#   - On HFS+ a real copy takes place, may take some time.
#
# v1.0 2022-06-02
#
# Dependencies: alisma — https://eclecticlight.co/taccy-signet-precize-alifix-utiutility-alisma/


for i in "$@"
do
 # Print item
	echo "ℹ️  $i"

	# Setup
	file=$(basename "$i")
	fileName=${file%.*}
	fileExt=$(echo "$file" |awk -F . '{print $NF}')
	if [[ "$fileName" == "$fileExt" ]] ; then fileExt="" ; fi

	if [[ -L "$i" ]] ; then
		symlinkOriginal=$(readlink "$i")		# /path/to/symlinkOrginal or -1 if it is no symlink.
		aliasOriginal=-1
	else
		symlinkOriginal=-1
		aliasOriginal=$(alisma -p "$i")			# /path/to/aliasOrginal or -1 if it is no alias.
	fi
	
	# Actions
	if [[ ! -e $i ]] ; then
		echo "❌ Invalid filepath!"
		echo
	elif [[ $aliasOriginal == -1 && $symlinkOriginal == -1 ]] ; then
		echo "❌ Not a symlink or alias!"
		echo
	elif [[ $aliasOriginal != -1 && ! -f "$aliasOriginal" ]] ; then
		echo "👉 $aliasOriginal"
		echo "❌ Alias destination is not a file!"
		echo
	elif [[ $symlinkOriginal != -1 && ! -f "$symlinkOriginal" ]] ; then
		echo "👉 $symlinkOriginal"
		echo "❌ Symlink destination is not a file!"
		echo
	elif [[ -f "$aliasOriginal" ]] ; then
		if [[ $fileExt == "" ]] ; then			# If the alias does not have a file extension
			orig=$(basename "$aliasOriginal")
			origName=${orig%.*}
			origExt=$(echo "$orig" |awk -F . '{print $NF}')
			if [[ "$origExt" == "$origName" ]] ; then origExt="" ; fi

			if [[ "$origExt" != "" ]] ; then 	# … but the file the alias points to has an extension
				fileFull="$fileName.$origExt"		# …… then the original file replacing the alias gets the alias' filename and the original's extension.
			else
				fileFull="$fileName"						# Or else the file gets the filename from the alias without an extension just like the file the alias pointed to.
			fi
		fi
		filePath="$(dirname "$i")/$fileFull"
		rm -f "$i"
		cp "$aliasOriginal" "$filePath"
		echo "👉 $aliasOriginal"
		echo "✅ Converted alias to file:"
		echo " $filePath"
		echo
	elif [[ -f "$symlinkOriginal" ]] ; then
		if [[ $fileExt == "" ]] ; then			# If the alias does not have a file extension
			orig=$(basename "$symlinkOriginal")
			origName=${orig%.*}
			origExt=$(echo "$orig" |awk -F . '{print $NF}')
			if [[ "$origExt" == "$origName" ]] ; then origExt="" ; fi

			if [[ "$origExt" != "" ]] ; then 	# … but the file the alias points to has an extension
				fileFull="$fileName.$origExt"		# …… then the original file replacing the alias gets the alias' filename and the original's extension.
			else
				fileFull="$fileName"						# Or else the file gets the filename from the alias without an extension just like the file the alias pointed to.
			fi
		fi
		filePath="$(dirname "$i")/$fileFull"
		rm -f "$i"
		cp "$symlinkOriginal" "$filePath"
		echo "👉 $symlinkOriginal"
		echo "✅ Converted symlink to file:"
		echo " $filePath"
		echo
	fi
done