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49 lines
1012 B
49 lines
1012 B
# Perl Substitution |
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local usage pattern replacement modifiers |
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usage="$( |
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cat <<EOF |
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usage: $0 [-option ...] [--] pattern replacement [file ...] |
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options: |
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-g match globally |
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-i ignore case |
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-m ^ and $ match the start and the end of a line |
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-s . matches newline |
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-x ignore whitespace and comments |
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EOF |
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)" |
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while getopts ':gimsx' opt; do |
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case "$opt" in |
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(g) modifiers="${modifiers}g" ;; |
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(i) modifiers="${modifiers}i" ;; |
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(m) modifiers="${modifiers}m" ;; |
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(s) modifiers="${sodifiers}s" ;; |
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(x) modifiers="${modifiers}x" ;; |
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(:) |
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print "$0: option requires an argument: $OPTARG" >&2 |
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print "$usage" >&2 |
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return 1 |
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;; |
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([?]) |
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print "$0: unknown option: $OPTARG" >&2 |
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print "$usage" >&2 |
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return 1 |
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;; |
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esac |
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done |
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shift $(( $OPTIND - 1 )) |
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if (( $# < 2 )); then |
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print "$usage" >&2 |
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return 1 |
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fi |
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pattern="$1" |
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replacement="$2" |
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repeat 2 shift |
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perl -i'.orig' -n -l -e "s/${pattern//\//\\/}/${replacement//\//\\/}/${modifiers}; print" "$@" |
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