[epiphany] Rename run-uncrustify to check-code-style without automatic patching

[Jan-Michael Brummer <jbrummer src gnome org>]

commit 2b88214f557ffa1f62ae161c4a8f7f2ae12dcee1
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Fri Jul 5 23:56:23 2019 +0200

    Rename run-uncrustify to check-code-style without automatic patching
    
    Instead of changing the code automatically create a common patch file which
    can be applied manually.

 data/{run-uncrustify => check-code-style} | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)
---
diff --git a/data/run-uncrustify b/data/check-code-style
similarity index 51%
rename from data/run-uncrustify
rename to data/check-code-style
index c145183be..57b604e39 100755
--- a/data/run-uncrustify
+++ b/data/check-code-style
@@ -16,12 +16,37 @@ then
     exit 1
 fi
 
+patch=$(mktemp)
+
 for DIR in $SOURCE_ROOT/embed $SOURCE_ROOT/lib $SOURCE_ROOT/src $SOURCE_ROOT/tests
 do
    # Aligning prototypes is not working yet, so avoid headers
    for FILE in $(find "$DIR" -name "*.c" ! -path "*/contrib/*")
     do
-        "$UNCRUSTIFY" -c "$SOURCE_ROOT/data/uncrustify.cfg" --replace --no-backup "$FILE"
-        "$LINEUP_PARAMETERS" "$FILE" > "$FILE.temp" && mv "$FILE.temp" "$FILE"
+        cp $FILE $FILE.check
+        "$UNCRUSTIFY" -c "$SOURCE_ROOT/data/uncrustify.cfg" --replace --no-backup "$FILE.check"
+        "$LINEUP_PARAMETERS" "$FILE.check" > "$FILE.temp" && mv "$FILE.temp" "$FILE.check"
+        diff -u "$FILE" "$FILE.check" | sed -e "1s|--- |--- a/|" -e "2s|+++ -|+++ b/$file|" >> "$patch"
+        rm $FILE.check
    done
 done
+
+if [ ! -s "$patch" ] ; then
+  printf "** Commit is valid. \\o/\n"
+  rm -f "$patch"
+  exit 0
+fi
+
+printf "** Commit does not comply to the correct style :(\n\n"
+
+if hash colordiff 2> /dev/null; then
+  colordiff < $patch
+else
+  cat "$patch"
+fi
+
+printf "\n"
+printf "You can apply these changed with: git apply $patch\n"
+printf "\n"
+
+exit 1