dotfiles/.local/bin/scripts/dif

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#!/bin/bash -e
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# interactive diff with pagination and nice coloring
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declare -a files
while test $# -gt 0
do test "$1" == "--" && shift &&
command="$@" && break
files+=("$1")
shift
done
{
if ! test "$command"; then
mime="$(file --brief --mime "${files[@]}")"
case "$mime" in
(*audio*) command="ffprobe -loglevel warning -print_format default=noprint_wrappers=1 -show_format -pretty";;
(image/*) command="exiftool";;
(*sqlite*) sqldiff --summary "${files[@]}" | grep -v '0 changes, 0 inserts, 0 deletes';; # TODO syntax highlighting for INSERT/UPDATE/DELETE
(text/*)
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# Use wiked-diff only for text <100KB
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test 100000 -gt "$(stat --format=%s "${files[@]}" | paste -s -d'+' | bc)" &&
wiked-diff "${files[@]}" ||
diff --color=always --unified=1 --report-identical-files "${files[@]}"
;;
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(*) diff-color --report-identical-files "${files[@]}";;
esac
fi
if test "$command"; then
echo "Generated through $command"
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$(test $(tput cols) -gt 120 && echo "diff --color=always --side-by-side" || echo "diff-color") \
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--ignore-case --report-identical-files --label="${files[0]}" --label="${files[1]}" <($command "${files[0]}") <($command "${files[1]}")
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fi
} | less --RAW-CONTROL-CHARS --quit-on-intr --quit-if-one-screen