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145 lines
3.1 KiB
Bash
Executable File
145 lines
3.1 KiB
Bash
Executable File
#!/bin/sh
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# Copyright (C) 2019-2020 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This script intends to facilitate spell checking of source/doc files.
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# It:
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# - transforms the files into a list of lowercase words
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# - prefixes each word with the frequency
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# - filters out words within a frequency range
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# - sorts the words, longest first
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#
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# If '-c' is passed as option, it operates on the C comments only, rather than
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# on the entire file.
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#
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# For:
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# ...
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# $ files=$(find gdb -type f -name "*.c" -o -name "*.h")
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# $ ./gdb/contrib/words.sh -c $files
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# ...
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# it generates a list of ~15000 words prefixed with frequency.
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#
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# This could be used to generate a dictionary that is kept as part of the
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# sources, against which new code can be checked, generating a warning or
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# error. The hope is that misspellings would trigger this frequently, and rare
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# words rarely, otherwise the burden of updating the dictionary would be too
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# much.
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#
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# And for:
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# ...
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# $ files=$(find gdb -type f -name "*.c" -o -name "*.h")
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# $ ./gdb/contrib/words.sh -c -f 1 $files
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# ...
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# it generates a list of ~5000 words with frequency 1.
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#
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# This can be used to scan for misspellings manually.
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#
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minfreq=
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maxfreq=
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c=false
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while [ $# -gt 0 ]; do
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case "$1" in
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-c)
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c=true
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shift
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;;
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--freq|-f)
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minfreq=$2
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maxfreq=$2
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shift 2
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;;
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--min)
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minfreq=$2
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if [ "$maxfreq" = "" ]; then
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maxfreq=0
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fi
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shift 2
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;;
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--max)
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maxfreq=$2
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if [ "$minfreq" = "" ]; then
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minfreq=0
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fi
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shift 2
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;;
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*)
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break;
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;;
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esac
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done
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if [ "$minfreq" = "" ] && [ "$maxfreq" = "" ]; then
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minfreq=0
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maxfreq=0
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fi
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awkfile=$(mktemp)
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trap 'rm -f "$awkfile"' EXIT
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cat > "$awkfile" <<EOF
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BEGIN {
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in_comment=0
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}
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// {
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line=\$0
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}
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/\/\*/ {
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in_comment=1
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sub(/.*\/\*/, "", line)
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}
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/\*\// {
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sub(/\*\/.*/, "", line)
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in_comment=0
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print line
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next
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}
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// {
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if (in_comment) {
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print line
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}
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}
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EOF
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# Stabilize sort.
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export LC_ALL=C
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if $c; then
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awk \
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-f "$awkfile" \
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-- "$@"
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else
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cat "$@"
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fi \
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| sed \
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-e 's/[!"?;:%^$~#{}`&=@,. \t\/_()|<>\+\*-]/\n/g' \
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-e 's/\[/\n/g' \
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-e 's/\]/\n/g' \
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-e "s/'/\n/g" \
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-e 's/[0-9][0-9]*/\n/g' \
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-e 's/[ \t]*//g' \
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| tr '[:upper:]' '[:lower:]' \
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| sort \
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| uniq -c \
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| awk "{ if (($minfreq == 0 || $minfreq <= \$1) \
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&& ($maxfreq == 0 || \$1 <= $maxfreq)) { print \$0; } }" \
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| awk '{ print length($0) " " $0; }' \
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| sort -n -r \
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| cut -d ' ' -f 2-
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