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73 lines
1.8 KiB
73 lines
1.8 KiB
#!/bin/sh -ex
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# TODO: extract self without resolving to $0 because it doesn't resolve links
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if [ -z "$XDG_CACHE_HOME" ]; then
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destdir=/tmp/tarinstall
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else
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destdir="$XDG_CACHE_HOME"/tarinstall
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fi
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if ! [ -d "$destdir" ]; then
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mkdir -p "$destdir"
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fi
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# If the file does not contain the .tin extension it was either renamed or
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# linked somewhere, so if it was called as $ <exe> then try to find it in the
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# current directory else try to find it in path. When found evaluate if it is
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# a link, if it is traverse it and then set the archive variable
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# TODO: for each match check if the file si really a tarinstall with a header
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archive="$0"
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if ! echo "$archive" | grep -q \.tin$; then
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if [ "$(dirname "$archive")" = '.' ]; then
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if [ -e "$archive" ]; then
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if [ -L "$archive" ]; then
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archive="$(readlink "$0")"
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fi
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else
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: > "$destdir"/paths
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( IFS=:
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for p in $PATH; do
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find -L "$p" -name "$archive" >> "$destdir"/paths
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done
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)
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while read -r l; do
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if [ -L "$l" ]; then
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archive="$(readlink "$l")"
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break
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elif [ -x "$l" ]; then
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archive="$l"
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break
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fi
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done < "$destdir"/paths
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fi
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fi
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fi
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if ! [ "$(head -n 1 "$destdir"/ID/checksum 2>/dev/null)" = 'SUM' ]; then
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rm -rf "$destdir"/ID
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tail -c +BYTES "$0" | lz4 -dc | tar -x -C "$destdir"
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echo "SUM" > "$destdir"/ID/checksum
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fi
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if [ "$(find "$destdir"/ID/bin -maxdepth 1 -type f | wc -l)" = '1' ]; then
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binname="$(find "$destdir"/ID/bin -maxdepth 1 -type f)"
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else
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binname="$(basename "$0")"
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if echo "$binname" | grep -q \.tin$; then
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binname="$destdir"/ID/bin/"$(echo "$binname" | sed s/\.tin//)"
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fi
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fi
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ORIGIN="$destdir"/ID
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LD_LIBRARY_PATH="$ORIGIN/lib"
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PATH="$ORIGIN/bin":$PATH
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export ORIGIN
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export LD_LIBRARY_PATH
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export PATH
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# export LD_DEBUG='libs'
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exec "$binname" "$@"
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