60 lines
1.4 KiB
Plaintext
60 lines
1.4 KiB
Plaintext
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#!/usr/bin/env bash
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# A simple script that uses ag
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# <https://github.com/ggreer/the_silver_searcher> and perl to perform
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# a project-wide search and replace; it shows you the results and asks
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# for confirmation before committing the changes.
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#
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# Usage: replace [pattern] [replace] [options for ag]
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TMP_FILE="/tmp/ag-repl"
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RED=`printf "\033[31m"`
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NC=`printf "\033[0m"`
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sanitize() {
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# For text that we interpolate into perl search/replace regex
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echo "$1" | sed -e "s_/_\\\/_g"
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}
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# Begin
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input=$1
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search=`sanitize "$1"`
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replace=`sanitize "$2"`
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shift
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shift
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# Show the search/replace results
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if ag $input $* -s --group --color --break --stats \
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| perl -p -e "s/(?<=.)$search/$NC$RED$replace$NC/g" \
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| perl -p -e "s/^([0-9]+ matches$)/\n\$1/g" \
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> "$TMP_FILE"; then
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# Show the results
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less -XF "$TMP_FILE"
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# Calculate if there were results
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lines=`wc -l $TMP_FILE | awk '{print $1}'`
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rm -rf "$TMP_FILE"
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[ "$lines" -lt 6 ] && exit 2
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# Ask for confirmation
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echo
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echo -n "Apply changes? (y/n) "
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read -n1 REPLY
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echo
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if [[ $REPLY =~ ^[Yy]$ ]]; then
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# Now actually do the search replace! This is destructive. No, no
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# backups are made. You better have read the earlier prompt!
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ag -l $input $* | xargs perl -pi -e "s/$search/$replace/g"
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echo "Done!"
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exit
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else
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echo $RED"Aborted!"$NC
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exit 3
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fi
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fi
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exit 1
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