97 lines
2.3 KiB
Bash
Executable file
97 lines
2.3 KiB
Bash
Executable file
#!/bin/sh
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#
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# ardiff tries to make it easy for you to compare two archives. It makes no
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# claims about originality, correctness or usefulness, but it saved a lot of
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# time for at least one port maintainer.
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#
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# DEPS: vim, p7zip
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# TODO: word-by-word, more intelligent diffs
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#
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usage () {
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if [ "$#" -gt 0 ]; then
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echo "Error: $*" >&2
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fi
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echo "Usage: $0 <archive1> <archive2>" >&2
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exit 0
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}
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debug () {
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echo "Debug: $*" >&2
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}
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die () {
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echo "Fatal: $*" >&2
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exit 2
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}
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extract () {
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if [ "$#" != 2 ]; then
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die "extract () miscalled" >&2
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fi
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cd $2
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if tar tf $1 >&-; then
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debug "file $1 looks like a good tar archive"
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tar xf $1 && debug "file $1 untar'ed successfully" || die "file $1 failed to untar"
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elif 7z t $1 >&-; then
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debug "file $1 looks like a good non-tar archive"
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7z x $1 >&- && debug "file $1 un7z'ed successfully" || die "file $1 failed to un7z"
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else
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die "file $1 was not recognized"
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fi
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}
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if [ "$#" != "2" ]; then
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usage
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fi
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ar1=`realpath $1`
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ar2=`realpath $2`
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for i in $ar1 $ar2;do if [ ! -r $i ]; then
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usage "file \"$i\" unreadable"
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fi;done
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for i in tar 7z;do if [ ! -x `which $i` ]; then
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die "missing a decompressor, please make sure tar and 7z are available"
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fi;done
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if [ ! -x `which vim` ]; then
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die "missing vim, please install it"
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fi
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art1=`mktemp -d -t /tmp` && debug "created tmp dir $art1" || usage "could not create a tmp dir"
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art2=`mktemp -d -t /tmp` && debug "created tmp dir $art2" || usage "could not create a tmp dir"
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extract $ar1 $art1
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extract $ar2 $art2
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if [ "`ls $art1|wc -l`" -eq 1 ]; then
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dart1=$art1/`ls $art1|head -n1`
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else
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dart1=$art1
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fi
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if [ "`ls $art2|wc -l`" -eq 1 ]; then
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dart2=$art2/`ls $art2|head -n1`
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else
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dart2=$art2
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fi
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#if [ "`ls $art1|wc -l`" -eq 1 ]&&[ "`ls $art2|wc -l`" -eq 1 ]; then
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# dart1=$art1/`ls $art1|head -n1`
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# dart2=$art2/`ls $art2|head -n1`
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#else
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# dart1=$art1
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# dart2=$art2
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#fi
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{
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echo "====== Appeared and disappeared ======"
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diff -urq $dart1 $dart2|sed -e "s|$art1|OLD|;s|$art2|NEW|"|grep '^Only'
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echo "====== Modified ======"
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diff -urq $dart1 $dart2|sed -e "s|$art1|OLD|;s|$art2|NEW|"|grep -v '^Only'
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echo "====== Modifications ======"
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diff -ur $dart1 $dart2|sed -e "s|$art1|OLD|;s|$art2|NEW|"
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}|vim -R -c "syntax on" -c "set syntax=diff" -c "set nowrap" \
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-c 'let @/="^--- "' -c "set so=20" -
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rm -rf $art1 $art2 && debug "removed tmp dirs"
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