37 lines
615 B
Plaintext
37 lines
615 B
Plaintext
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#!/bin/sh
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set -e +x
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function fail {
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echo "$0: $1" >&2
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exit 1
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}
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USAGE="Usage: $0 dep old new"
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if [ $# -ne 3 ]; then
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fail "$USAGE"
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fi
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DEP=$1
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OLD=$(echo $2 | sed -e "s/*/\\\\*/g" -e "s/\./\\\\./g")
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NEW=$3
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CABALFILE=$(ls *.cabal)
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if [ $(echo $CABALFILE | wc -w) -ne 1 ]; then
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fail "There needs to be one .cabal file in the current dir!"
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fi
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BREAK=[^[:alnum:]-]
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if ! grep -q "$BREAK$DEP$BREAK[^,]*$OLD" $CABALFILE; then
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fail "$CABALFILE does not match: $DEP $OLD"
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fi
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if [ ! -f $CABALFILE.orig ]; then
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BACKUP=.orig
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fi
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sed -i$BACKUP -e "s/\($BREAK$DEP$BREAK[^,]*\)$OLD/\1$NEW/g" $CABALFILE
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