107 lines
2.1 KiB
Bash
Executable File
107 lines
2.1 KiB
Bash
Executable File
#!/bin/bash
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# Check if two hardlinks point to same file
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aresame()
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{
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[ "$(ls -i $1 | awk '{print $1;}')" == "$(ls -i $2 | awk '{print $1;}')" ]
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}
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hardlink()
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{
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ln $(readlink -f $1) $2;
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}
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# Move $1 to $2
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pull()
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{
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mkdir -p $(dirname $2);
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mv $1 $2;
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}
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# Pull $1 to $2 and link $2 into $1
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pulllink()
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{
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pull $1 $2
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hardlink $2 $1
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}
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# Ask a question and return the answer
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y()
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{
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local yn;
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read -p "$1" yn;
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case "$yn" in
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y|Y ) return 0;;
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n|N ) return 1;;
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* ) return $(y "$1");;
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esac
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}
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# Start of the script
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if (( $# != 2 )); then
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echo "Usage: lincon <add|deploy> <path/to/file>"
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exit 0
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fi
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OPERATION=$1
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ORIG=$2
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BAK=$ORIG.orig
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TARGET=$(dirname "$0")$ORIG
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case $OPERATION in
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# Add a file to versioning
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add)
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# Error if original does not exist
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if [ ! -e $ORIG ]; then
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echo "Error: File $ORIG does not exist.";
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exit 1;
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fi
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# There is already a file in the repo
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if [ -e $TARGET ]; then
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# File is already linked
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if aresame $ORIG $TARGET; then
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echo "File $ORIG is already versioned.";
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exit;
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fi
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# Repo contains different copy
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echo "Versioned copy of $ORIG already exists.";
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if ! y "Overwrite it (y/n)?"; then
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exit;
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fi
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fi
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pulllink $ORIG $TARGET
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echo "File $ORIG versioned."
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;;
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# Link a file from repo
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deploy)
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# Check if versioned copy exists
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if [ ! -e $TARGET ]; then
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echo "Error: No versioned copy of $ORIG found.";
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exit 1;
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fi
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# Backup any original files
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if [ -e $ORIG ]; then
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if aresame $ORIG $TARGET; then
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echo "File $ORIG is already versioned.";
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exit;
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else
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echo "Backup original file to $BAK.";
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mv $ORIG $BAK
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fi
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fi
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# Link it, baby!
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hardlink $TARGET $ORIG
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echo "File $ORIG deployed."
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;;
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*)
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echo "Usage: repoconf <add|deploy> <path/to/file>";
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exit 0;
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;;
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esac
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