40 lines
1.2 KiB
Bash
40 lines
1.2 KiB
Bash
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#!/bin/bash
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function replace {
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local PATTERN=$1; shift
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local NEW_LINE=$1; shift
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local FILE=$1; shift
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[ ! "$PATTERN" ] || [ ! $FILE ] && return 1
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local BEFORE=$1
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local NEW=$(echo "${NEW_LINE}" | sed 's/\//\\\//g')
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echo finding: $PATTERN Replace with $NEW before $BEFORE in $FILE
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touch "${FILE}" || return 1
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echo matching: $PATTERN
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match=false
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if [ "$NEW_LINE" ]; then
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sed -i '/'"${PATTERN}"'/{s/.*/'"${NEW}"'/;h};${x;/./{x;q100};{x;q20}}' "${FILE}"
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[[ $? -eq 100 ]] && match=true
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echo match $match
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if [ $match == false ]; then
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echo adding new entry $NEW_LINE
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if [ "$BEFORE" ]; then
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echo searching for $BEFORE to add line before
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# sed -i '/'"${BEFORE}"'/{i/.*/'"${NEW}"'/;h};${x;/./{x;q100};x}' "${FILE}"
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sed -i '/'"${BEFORE}"'/!{q20};/'"${BEFORE}"'/i\'"${NEW}" "${FILE}"
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echo return $?
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exit
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# ;/i '"${NEW}"'' "${FILE}"
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[[ $? -eq 100 ]] && match=true || match=false
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echo before match $match
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fi
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# if [ $match == false ]; then
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# echo appending to file
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# echo "${NEW_LINE}" >> "${FILE}"
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# fi
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else echo line matched/replaced
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fi
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else
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sed '/'"${PATTERN}"'/d' "${FILE}"
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echo line removed
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fi
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}
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