CVS Utils

cvs-patch.sh

#!/bin/bash

PROJECT_PATH=$(pwd);
APPLY=false
IDENTIFIER=""

echoerror() {
    printf "$@\n" 1>&2
}

apply() {
    cd "$PROJECT_PATH" && patch --dry-run -f -p0 < "$PATCH_DIR/patch.diff"
    if [ $? -ne 0 ]; then
        echoerror "Invalid Patch!"
        exit 1
    fi
    local files_dir="$PATCH_DIR/files"
    if [ -d $files_dir ]; then
        local files=$(ls "$files_dir");
        for file in $files; do
            cp -rf "$files_dir/$file" "$PROJECT_PATH"
        done
    fi
    cd "$PROJECT_PATH" && patch -p0 < "$PATCH_DIR/patch.diff"
}

create() {
    if [ -d "$PATCH_DIR" ]; then
        read -p"The '$IDENTIFIER' patch already exists! Are you want proceed?[Y/n] " -er proceed
        if [ "$proceed" != "Y" -a "$proceed" != "y" -a "$proceed" != "" ]; then
            exit 0
        fi
        rm -rf "$PATCH_DIR"
    fi
    echo "Creating patch..."
    local diff_path="$PROJECT_PATH"
    if [ "$PROJECT_PATH" == "$(pwd)" ]; then
        diff_path="."
    fi
    DIFF=$(cvs diff "$diff_path" 2>/dev/null | grep -v '\(.so\|.so[.0-9]\+\|.log\|.o\)$' | sed "s%^\(\?\|Index:\) $PROJECT_PATH/%\1 %")
    if [ "$DIFF" == "" ]; then
        echoerror "Diffs weren't found at '$PROJECT_PATH'"
        exit 1
    fi


    mkdir -p "$PATCH_DIR"

    echo "$DIFF" | grep -v ^? > "$PATCH_DIR/patch.diff"

    FILES=$(echo "$DIFF" | grep ^? | sed 's/^?//')
    for file in $FILES; do
        mkdir -p "$PATCH_DIR/files/$(dirname $file)"
        cp "$PROJECT_PATH/$file" "$PATCH_DIR/files/$file"
    done
    echo "Patch created at '$PATCH_DIR'"
}

usage() {
    echo "Usage: cvs-patch [options] <identifier>"
    echo ""
    echo "Options:"
    echo "  -p --project Sets the project path."
    echo "  --apply      Apply an existing patch to the project."
    echo ""
}

parse_args() {
    local ARGS=$(getopt -o p:h -l "project:,apply,help" -n "cvs-patch" -- "$@")

    if [ $? -ne 0 ]; then
        echoerror "\n$(usage)"
        exit 1
    fi

    eval set -- "$ARGS"

    while [ $# -gt 0 ]; do
        case "$1" in
        -p|--project)
            shift
            if [ -n "$1" ]; then
                PROJECT_PATH="$(echo "$1" | sed 's_/$__')"
            fi
            ;;
        --apply)
            shift
            APPLY=true
            ;;
        -h|--help)
            shift
            usage
            exit
            ;;
        --)
            shift
            break;
            ;;
        *)
            if [ "$IDENTIFIER" == "" ]; then
                IDENTIFIER=$1
            else
                echoerror "Just one identifier must be passed!"
                exit 1;
            fi
            ;;
        esac
        shift
    done

    if [ "$IDENTIFIER" == "" ]; then
        if [ "$1" != "" ]; then
            if [ $# -eq 1 ]; then
                IDENTIFIER="$1"
            else
                echoerror "Please pass only one identifier!"
                echoerror "\n$(usage)"
                exit 1
            fi
        else
            echoerror "Please pass an identifier!"
            echoerror "\n$(usage)"
            exit 1
        fi
    fi
}


# ========= MAIN =========
parse_args $@
PATCH_DIR="$HOME/tmp/patches/$IDENTIFIER"
if $APPLY; then
    apply
else
    create
fi