hush/scripts/fix_ws.sh

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#!/bin/bash
# Whitespace fixer
# Usage: fix_ws [dir]...
temp="/tmp/fix_ws.$$.$RANDOM"
# Using $'xxx' bashism
begin8sp_tab=$'s/^ /\t/'
beginchar7sp_chartab=$'s/^\\([^ \t]\\) /\\1\t/'
tab8sp_tabtab=$'s/\t /\t\t/g'
tab8sptab_tabtabtab=$'s/\t \t/\t\t\t/g'
begin17sptab_tab=$'s/^ \\{1,7\\}\t/\t/'
tab17sptab_tabtab=$'s/\t \\{1,7\\}\t/\t\t/g'
trailingws_=$'s/[ \t]*$//'
#>fix_ws.diff
find "$@" -type f \
| while read name; do
test "YES" = "${name/*.bz2/YES}" && continue
test "YES" = "${name/*.gz/YES}" && continue
test "YES" = "${name/*.png/YES}" && continue
test "YES" = "${name/*.gif/YES}" && continue
test "YES" = "${name/*.jpg/YES}" && continue
test "YES" = "${name/*.diff/YES}" && continue
test "YES" = "${name/*.patch/YES}" && continue
# shell testsuite entries are not to be touched too
test "YES" = "${name/*.right/YES}" && continue
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if test "YES" = "${name/*.[chsS]/YES}" \
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-o "YES" = "${name/*.sh/YES}" \
-o "YES" = "${name/*.txt/YES}" \
-o "YES" = "${name/*.html/YES}" \
-o "YES" = "${name/*.htm/YES}" \
-o "YES" = "${name/*Config.in*/YES}" \
; then
# More aggressive whitespace fixes for known file types
echo "Formatting: $name" >&2
cat "$name" \
| sed -e "$tab8sptab_tabtabtab" -e "$tab8sptab_tabtabtab" \
-e "$tab8sptab_tabtabtab" -e "$tab8sptab_tabtabtab" \
| sed "$begin17sptab_tab" \
| sed -e "$tab17sptab_tabtab" -e "$tab17sptab_tabtab" \
-e "$tab17sptab_tabtab" -e "$tab17sptab_tabtab" \
-e "$tab17sptab_tabtab" -e "$tab17sptab_tabtab" \
| sed "$trailingws_"
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elif test "YES" = "${name/*Makefile*/YES}" \
-o "YES" = "${name/*Kbuild*/YES}" \
; then
# For Makefiles, never convert "1-7spaces+tab" into "tabtab"
echo "Makefile: $name" >&2
cat "$name" \
| sed -e "$tab8sptab_tabtabtab" -e "$tab8sptab_tabtabtab" \
-e "$tab8sptab_tabtabtab" -e "$tab8sptab_tabtabtab" \
| sed -e "$tab17sptab_tabtab" -e "$tab17sptab_tabtab" \
-e "$tab17sptab_tabtab" -e "$tab17sptab_tabtab" \
-e "$tab17sptab_tabtab" -e "$tab17sptab_tabtab" \
| sed "$trailingws_"
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else
# Only remove trailing WS for the rest
echo "Removing trailing whitespace: $name" >&2
cat "$name" \
| sed "$trailingws_"
fi >"$temp"
# diff -u "$temp" "$name" >>fix_ws.diff
# Conserve mode/symlink:
cat "$temp" >"$name"
done
rm "$temp" 2>/dev/null