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Datei: pre-commit Sprache: SML

Original von: Coq^©

#!/bin/sh

# configure automatically sets up a wrapper at .git/hooks/pre-commit
# which calls this script (if it exists).

set -e

dev/tools/check-overlays.sh

if ! git diff --cached --name-only -z | xargs -0 dev/tools/check-eof-newline.sh ||
        ! git diff-index --check --cached HEAD >/dev/null 2>&1 ;
then
    1>&2 echo "Auto fixing whitespace issues..."

    # We fix whitespace in the index and in the working tree
    # separately to preserve non-added changes.
    index=$(mktemp "git-fix-ws-index.XXXXXX")
    fixed_index=$(mktemp "git-fix-ws-index-fixed.XXXXXX")
    tree=$(mktemp "git-fix-ws-tree.XXXXXX")
    1>&2 echo "Patches are saved in '$index', '$fixed_index' and '$tree'."
    1>&2 echo "If an error destroys your changes you can recover using them."
    1>&2 echo "(The files are cleaned up on success.)"
    1>&2 echo #newline

    git diff-index -p --cached HEAD > "$index"
    git diff-index -p HEAD > "$tree"

    # reset work tree and index
    # NB: untracked files which were not added are untouched
    git apply --whitespace=nowarn --cached -R "$index"
    git apply --whitespace=nowarn -R "$tree"

    # Fix index
    # For end of file newlines we must go through the worktree
    1>&2 echo "Fixing staged changes..."
    git apply --cached --whitespace=fix "$index"
    git apply --whitespace=fix "$index" 2>/dev/null # no need to repeat yourself
    git diff --cached --name-only -z | xargs -0 dev/tools/check-eof-newline.sh --fix
    git add -u
    1>&2 echo #newline

    # reset work tree
    git diff-index -p --cached HEAD > "$fixed_index"
    # If all changes were bad whitespace changes the patch is empty
    # making git fail. Don't fail now: we fix the worktree first.
    if [ -s "$fixed_index" ]
    then
        git apply --whitespace=nowarn -R "$fixed_index"
    fi

    # Fix worktree
    1>&2 echo "Fixing unstaged changes..."
    git apply --whitespace=fix "$tree"
    git diff --name-only -z | xargs -0 dev/tools/check-eof-newline.sh --fix
    1>&2 echo #newline

    if ! [ -s "$fixed_index" ]
    then
        1>&2 echo "No changes after fixing whitespace issues!"
        exit 1
    fi

    # Check that we did fix whitespace
    if ! git diff-index --check --cached HEAD;
    then
        1>&2 echo "Auto-fixing whitespace failed: errors remain."
        1>&2 echo "This may fix itself if you try again."
        1>&2 echo "(Consider whether the number of errors decreases after each run.)"
        exit 1
    fi
    1>&2 echo "Whitespace issues fixed!"

    # clean up temporary files
    rm "$index" "$tree" "$fixed_index"
fi

¤ Dauer der Verarbeitung: 0.1 Sekunden (vorverarbeitet) ¤

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