From a776ab73a0c446a1dda8bd0ddab357136ea85e60 Mon Sep 17 00:00:00 2001
From: Antonin Delpeuch <antonin@delpeuch.eu>
Date: Fri, 27 Sep 2024 22:44:48 +0200
Subject: [PATCH] Add mergiraf to the evaluated tools

---
 src/python/latex_output.py          |  1 +
 src/python/repo.py                  |  1 +
 src/scripts/merge_tools/mergiraf.sh | 74 +++++++++++++++++++++++++++++
 3 files changed, 76 insertions(+)
 create mode 100755 src/scripts/merge_tools/mergiraf.sh

diff --git a/src/python/latex_output.py b/src/python/latex_output.py
index 54fe1ed93f..f8a5b60555 100755
--- a/src/python/latex_output.py
+++ b/src/python/latex_output.py
@@ -166,6 +166,7 @@ def latex_def(name, value) -> str:
         "gitmerge_ort_ignorespace",
         "git_hires_merge",
         "spork",
+        "mergiraf",
         "intellimerge",
         "adjacent",
         "imports",
diff --git a/src/python/repo.py b/src/python/repo.py
index 0893aa6f07..62b73af6f9 100755
--- a/src/python/repo.py
+++ b/src/python/repo.py
@@ -120,6 +120,7 @@ def clone_repo(repo_slug: str, repo_dir: Path) -> None:
         "gitmerge_resolve",
         "git_hires_merge",
         "spork",
+        "mergiraf",
         "intellimerge",
         "adjacent",
         "imports",
diff --git a/src/scripts/merge_tools/mergiraf.sh b/src/scripts/merge_tools/mergiraf.sh
new file mode 100755
index 0000000000..09122127a5
--- /dev/null
+++ b/src/scripts/merge_tools/mergiraf.sh
@@ -0,0 +1,74 @@
+#!/usr/bin/env bash
+
+# usage: <scriptname> [--verbose] <clone_dir> <branch-1> <branch-2>
+# <clone_dir> must contain a clone of a repository.
+# Merges branch2 into branch1, in <clone_dir>.
+# Return code is 0 for merge success, 1 for merge failure, 2 for script failure.
+# For merge failure, also outputs "Conflict" and aborts the merge.
+
+set -o nounset
+
+verbose=
+if [ "$1" = "--verbose" ] ; then
+  # shellcheck disable=SC2034 # unused
+  verbose="$1"
+  shift
+fi
+
+if [ "$#" -ne 3 ]; then
+  echo "Usage: $0 [--verbose] CLONE_DIR BRANCH1 BRANCH2" >&2
+  exit 2
+fi
+
+MERGIRAF_VERSION="0.3.0"
+
+SCRIPT_PATH="$(dirname "$0")"; SCRIPT_PATH="$(eval "cd \"$SCRIPT_PATH\" && pwd")"
+ROOT_PATH="$(realpath "${SCRIPT_PATH}/../../../")"
+mergiraf_relativepath=bin/mergiraf
+mergiraf_absolutepath="${ROOT_PATH}/${mergiraf_relativepath}"
+mkdir -p ${ROOT_PATH}/bin
+
+if [ ! -e $mergiraf_absolutepath ]; then
+  ARCH=$(uname -m)
+  if [[ "$ARCH" == x86_64* ]]; then
+    ARCH="x86_64"
+  elif [[ "$ARCH" == i*86 ]]; then
+    echo "No mergiraf binaries for architecture $ARCH"
+    exit 2
+  elif  [[ "$ARCH" == arm* ]]; then
+    ARCH="aarch64"
+  fi
+  if [[ $OSTYPE == 'darwin'* ]]; then
+    VENDOR="apple-darwin"
+  else
+    VENDOR="unknown-linux-gnu"
+  fi
+  FULL_ARCH="${ARCH}-${VENDOR}"
+
+  wget https://codeberg.org/mergiraf/mergiraf/releases/download/v${MERGIRAF_VERSION}/mergiraf_${FULL_ARCH}.tar.gz -O ${ROOT_PATH}/bin/mergiraf.tar.gz
+  tar -zxf ${ROOT_PATH}/bin/mergiraf.tar.gz -C ${ROOT_PATH}/bin/
+  rm ${ROOT_PATH}/bin/mergiraf.tar.gz
+fi
+
+clone_dir=$1
+branch1=$2
+branch2=$3
+
+cd "$clone_dir" || { echo "$0: cannot cd to $clone_dir"; exit 2; }
+
+# set up mergiraf driver
+git config --global merge.mergiraf.name mergiraf
+git config --global merge.mergiraf.driver "${mergiraf_absolutepath} merge --git %O %A %B -s %S -x %X -y %Y -p %P"
+$(mergiraf_absolutepath) languages --gitattributes >> .gitattributes
+
+# perform merge
+git checkout "$branch1" --force
+git merge --no-edit "$branch2"
+retVal=$?
+
+# report conflicts
+if [ $retVal -ne 0 ]; then
+    echo "mergiraf.sh: Conflict"
+fi
+
+exit $retVal