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|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
re 'REGEXP' [FILE...]
re -h
EOF
}
help() {
cat <<-'EOF'
Options:
-h, --help show this message
REGEXP the regular expresion to match and replace
Execute a find and replace on files in a repository when
no FILE... is given, listing them via "vcs ls" from vcs(1), or
on the given FILE... list.
EXPRESSION is to be forwarded to sed(1) directly.
Examples:
Replace "weak" with "week" on the whole repository:
$ re 's/weak/week/g'
Delete lines beginning with "import" on package.py:
$ re '/^import/d' package.py
EOF
}
for flag in "$@"; do
case "$flag" in
(--)
break
;;
(--help)
usage
help
exit
;;
(*)
;;
esac
done
while getopts 'h' flag; do
case "$flag" in
(h)
usage
help
exit
;;
(*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
REGEXP="${1:-}"
eval "$(assert-arg -- "$REGEXP" 'REGEXP')"
shift
replace() {
FILE="$1"
# shellcheck disable=2094
if ! sed -E "$REGEXP" < "$FILE" | cmp -s - "$FILE"; then
if [ ! -e "$FILE" ]; then
return 1
fi
sed -E "$REGEXP" < "$FILE" | sponge "$FILE"
fi
}
if [ -n "${1:-}" ]; then
for f in "$@"; do
replace "$f"
done
else
vcs ls | while read -r f; do
replace "$f"
done
fi
|
