whitespace fixing script

diff --git a/scripts/fix_ws.sh b/scripts/fix_ws.sh
new file mode 100755 (executable)
index 0000000..89fce95
--- /dev/null
+++ b/scripts/fix_ws.sh
@@ -0,0 +1,61 @@
+#!/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
+
+    if test "YES" = "${name/*.[ch]/YES}" \
+       -o "YES" = "${name/*.sh/YES}" \
+       -o "YES" = "${name/*.txt/YES}" \
+       -o "YES" = "${name/*.html/YES}" \
+       -o "YES" = "${name/*.htm/YES}" \
+       -o "YES" = "${name/*Makefile*/YES}" \
+       -o "YES" = "${name/*Kbuild*/YES}" \
+       -o "YES" = "${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_"
+    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