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36 lines
708 B
Bash
36 lines
708 B
Bash
#!/usr/bin/env bash
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# This script replaces a section of text in a file marked by the bash
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# regular expression passed as the first argument and ending with the
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# second argument with the text in the the third argument The beginning
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# and ending lines themselves are discarded when replaced.
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ssection () {
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local beg="$1" end="$2" buf="$3"
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[[ -z "$beg" || -z "$end" ]] && echo "usage: ${0##*/} BEGX ENDX [STRING]" && return 1
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local in=no
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while IFS= read -r line; do
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if [[ "$line" =~ $beg ]]; then
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in=yes
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continue
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fi
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if [[ "$line" =~ $end ]]; then
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in=no
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printf "$buf\n\n"
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continue
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fi
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[[ "$in" == no ]] && echo "$line"
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done
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}
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ssection "$@"
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