Add diff-docx.sh to tools.

tools/diff-docx.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+f1="$1"
+f2="$2"
+test -f "$f1" -a -f "$f2" || {
+    echo "Usage: diff-docx first.docx second.docx" && exit 1
+}
+WORKDIR=$(mktemp -d -t diff-docx)
+trap "{ rm -r $WORKDIR; }" EXIT
+unzip -q -d "$WORKDIR/a" "$f1"
+unzip -q -d "$WORKDIR/b" "$f2"
+cd "$WORKDIR"
+mkdir tidy
+for x in a b; do
+    cp -r $x tidy/
+    find $x -iname '*.xml' -exec sh -c 'mkdir -p "$(dirname tidy/$1)" && tidy -q -xml -utf8 -i "$1" > "tidy/$1"' _ {} \;
+    find $x -iname '*.rels' -exec sh -c 'mkdir -p "$(dirname tidy/$1)" && tidy -q -xml -utf8 -i "$1" > "tidy/$1"' _ {} \;
+done
+cd tidy
+mkdir c
+cp -r a/* c/
+cp -r b/* c/
+find c -type f -exec sh -c 'echo "\033[1m=== ${1#*/} ===\033[0m" ; diff -u "a/${1#*/}" "b/${1#*/}" 2>&1' _ {} \;