Git Hooks: Add support for GUI git clients.

[ci skip]

1 files changed, 75 insertions, 5 deletions

diff --git a/misc/hooks/pre-commit-clang-format b/misc/hooks/pre-commit-clang-format
index c5cf4ecbb1..5a48aa1bfa 100755
--- a/misc/hooks/pre-commit-clang-format
+++ b/misc/hooks/pre-commit-clang-format
@@ -38,6 +38,15 @@ else
   READER=cat
 fi
 
+# Path to zenity
+ZENITY=`which zenity`
+
+# Path to xmessage
+XMSG=`which xmessage`
+
+# Path to powershell (Windows only)
+PWSH=`which powershell`
+
 ##################################################################
 # There should be no need to change anything below this line.
 
@@ -66,6 +75,19 @@ else
 fi
 
 if [ ! -x "$CLANG_FORMAT" ] ; then
+    if [ ! -t 1 ] ; then
+        if [ -x "$ZENITY" ] ; then
+            $ZENITY --error --title="Error" --text="Error: clang-format executable not found."
+            exit 1
+        elif [ -x "$XMSG" ] ; then
+            $XMSG -center -title "Error" "Error: clang-format executable not found."
+            exit 1
+        elif [ \( \( "$OSTYPE" = "msys" \) -o \( "$OSTYPE" = "win32" \) \) -a \( -x "$PWSH" \) ]; then
+            winmessage="$(canonicalize_filename "./.git/hooks/winmessage.ps1")"
+            $PWSH -noprofile -executionpolicy bypass -file "$winmessage" -center -title "Error" --text "Error: clang-format executable not found."
+            exit 1
+        fi
+    fi
     printf "Error: clang-format executable not found.\n"
     printf "Set the correct path in $(canonicalize_filename "$0").\n"
     exit 1
@@ -117,14 +139,62 @@ fi
 # a patch has been created, notify the user and exit
 printf "\nThe following differences were found between the code to commit "
 printf "and the clang-format rules:\n\n"
-$READER "$patch"
-printf "\n"
 
-# Allows us to read user input below, assigns stdin to keyboard
-exec < /dev/tty
+if [ -t 1 ] ; then
+    $READER "$patch"
+    printf "\n"
+    # Allows us to read user input below, assigns stdin to keyboard
+    exec < /dev/tty
+    terminal="1"
+else
+    cat "$patch"
+    printf "\n"
+    # Allows non zero zenity/powershell output
+    set +e
+    terminal="0"
+fi
 
 while true; do
-    read -p "Do you want to apply that patch (Y - Apply, N - Do not apply, S - Apply and stage files)? [Y/N/S] " yn
+    if [ $terminal = "0" ] ; then
+        if [ -x "$ZENITY" ] ; then
+            ans=$($ZENITY --text-info --filename="$patch" --width=800 --height=600 --title="Do you want to apply that patch?" --ok-label="Apply" --cancel-label="Do not apply" --extra-button="Apply and stage")
+            if [ "$?" = "0" ] ; then
+                yn="Y"
+            else
+                if [ "$ans" = "Apply and stage" ] ; then
+                    yn="S"
+                else
+                    yn="N"
+                fi
+            fi
+        elif [ -x "$XMSG" ] ; then
+            $XMSG -file "$patch" -buttons "Apply":100,"Apply and stage":200,"Do not apply":0 -center -default "Do not apply" -geometry 800x600 -title "Do you want to apply that patch?"
+            ans=$?
+            if [ "$ans" = "100" ] ; then
+                yn="Y"
+            elif [ "$ans" = "200" ] ; then
+                yn="S"
+            else
+                yn="N"
+            fi
+        elif [ \( \( "$OSTYPE" = "msys" \) -o \( "$OSTYPE" = "win32" \) \) -a \( -x "$PWSH" \) ]; then
+            winmessage="$(canonicalize_filename "./.git/hooks/winmessage.ps1")"
+            $PWSH -noprofile -executionpolicy bypass -file "$winmessage" -file "$patch" -buttons "Apply":100,"Apply and stage":200,"Do not apply":0 -center -default "Do not apply" -geometry 800x600 -title "Do you want to apply that patch?"
+            ans=$?
+            if [ "$ans" = "100" ] ; then
+                yn="Y"
+            elif [ "$ans" = "200" ] ; then
+                yn="S"
+            else
+                yn="N"
+            fi
+        else
+            printf "Error: zenity, xmessage, or powershell executable not found.\n"
+            exit 1
+        fi
+    else
+        read -p "Do you want to apply that patch (Y - Apply, N - Do not apply, S - Apply and stage files)? [Y/N/S] " yn
+    fi
     case $yn in
         [Yy] ) git apply $patch;
         printf "The patch was applied. You can now stage the changes and commit again.\n\n";