webrtc

#!/bin/bash

function assert_dir() {
    local dir="${1}"
    if [ ! -x "${dir}" ]; then
        echo "'${name}' does not exist or is not a directory; exiting."
        exit 1
    fi
}

function assert_prog() {
    local prog="${1}"
    local name="${2}"
    if [ ! -x "${prog}" ]; then
        echo "${name} does not exist or is not executable; exiting."
        exit 1
    fi
}

function sanity_check() {
    if [[ -z "${GCLIENT}" ]] || [[ -z "${NINJA}" ]]; then
        if [ -z ${DEPOT_TOOLS} ]; then
            if [ -d "$(pwd)"/depot_tools ]; then
                export DEPOT_TOOLS="$(pwd)"/depot_tools
            else
                export DEPOT_TOOLS=$(dirname $(which gclient))
            fi
        fi
        assert_dir "${DEPOT_TOOLS}"

        if [ -z "${GCLIENT}" ]; then
            export GCLIENT="${DEPOT_TOOLS}"/gclient
        fi
        assert_prog "${GCLIENT}"

        if [ -z "${NINJA}" ]; then
            export NINJA="${DEPOT_TOOLS}"/ninja
        fi
        assert_prog "${NINJA}"
    fi

    if [ -z "${LIBWEBRTC_REVISION}" ]; then
        export LIBWEBRTC_REVISION=4804
    fi
}

function fetch_and_sync() {
    sanity_check
    # Now let's fetch and sync the code to the specified revision.
    ${GCLIENT} config http://webrtc.googlecode.com/svn/trunk
    ${GCLIENT} sync --revision ${LIBWEBRTC_REVISION} --force
}

# Applying existing patches, if any.
function apply_patches() {
    if [ -d patches ]; then
        pushd trunk
        for p in ../patches/*.patch; do
            patch -u -N -p1 -f --no-backup-if-mismatch -i "${p}"
        done
        popd
    fi
}

function make_lib() {
    pushd trunk
    mkdir -p .lib
    pushd .lib
    rm -f *
    for l in $(find ../out/Release -name "*.a"); do
        ar x ${l}
    done
    ar rcs libWebRTC.a *.o
    rm -f *.o
    popd
    popd
}

function build_libwebrtc() {
    sanity_check
    pushd trunk
    local gyp_flags='--depth=. -Dextra_gyp_flag=0 -Dinclude_tests=0 -Denable_google_now=0 -Dlogging=0'
    python2 build/gyp_chromium ${gyp_flags} all.gyp && ${NINJA} -C out/Release || exit 1
    popd
}

function install_libwebrtc() {
    if [ ! -e trunk/.lib/libWebRTC.a ]; then
        echo "libwebrtc.a does not exist; maybe it wasn't built? exiting."
        exit 1
    fi
    install -d -m755 ${DESTDIR}${JHBUILD_PREFIX}/libwebrtc
    install -m644 trunk/.lib/libWebRTC.a ${DESTDIR}${JHBUILD_PREFIX}/libwebrtc
}

function get_depot_tools() {
    git submodule init
    git submodule update
}

case "${1}" in
    sync)
        fetch_and_sync
        apply_patches
        ;;
    patch)
        apply_patches
        ;;
    build)
        build_libwebrtc
        make_lib
        ;;
    install)
        install_libwebrtc
        ;;
    fetch_and_build)
        fetch_and_sync
        apply_patches
        build_libwebrtc
        make_lib
        ;;
    bootstrap)
        get_depot_tools
        fetch_and_sync
        apply_patches
        ;;
    library)
        make_lib
        ;;
    *)
        echo "Usage: ${0} {sync|patch|build|fetch_and_build|install|bootstrap|library}"
        exit 1
esac