blade

#!/bin/bash
#
# SCRIPT: blade
# AUTHOR: Michaelpeng <michaelpeng@tencent.com>
#         Phongchen <phongchen@tencent.com>
# DATE:   Dec 17 2011
# REV:    1.0.P (Valid are A, B, D, T and P)
#               (For Alpha, Beta, Dev, Test and Production)
#
# PLATFORM: Linux
# PURPOSE : A bash wrapper for blade, always run blade of
#           corresponding version in for given source dir
#           tree.
# REV LIST:
#        DATE:    Dec 17 2011
#        BY  :    Michaelpeng
#        MODIFICATION: Created

function _info() {
    if [ -t 1 ]; then
        echo -e "\033[1;36mBlade(info): $@\033[m" >&2
    else
        echo -e "Blade(info): $@" >&2
    fi
}

function _warning() {
    if [ -t 2 ]; then
        echo -e "\033[1;33mBlade(warning): $@\033[m" >&2
    else
        echo -e "Blade(warning): $@" >&2
    fi
}

function _fatal() {
    if [ -t 2 ]; then
        echo -e "\033[1;31mBlade(fatal): $@\nBlade(fatal): Blade will exit...\033[m" >&2
    else
        echo -e "Blade(fatal): $@\nBlade(fatal): Blade will exit..." >&2
    fi
    exit 1
}

function _full_real_path() {
    local o
    local f
    f="$1"

    if [ ! -L "$0" ]; then
        echo $f
        return 0
    fi

    if o=`readlink -f $f 2>/dev/null`; then
        echo "$o";
        return 0
    fi

    # BSD readlink doesn't support -f
    if o=`readlink $f`; then
        f="$o"
    fi

    echo $(cd $(dirname $f) && pwd)/$(basename $f)
    return 0
}

# Check the python version at first, exit blade when python
# version is under 2.7
function _check_python() {
    local python
    if command -v python &> /dev/null; then
        python="python"
    elif command -v python3 &> /dev/null; then
        echo "python3"
        return
    elif command -v python3 &> /dev/null; then
        python="python"
        echo "python3"
    else
        _fatal "Please install python 2.7+ or 3.6+ or above in your system"
    fi

    python_ver=$($python -V 2>&1 | sed 's/Python //g')
    if [[ "$python_ver" < "2.7" ]]; then
        _info "Python version in your machine: $python_ver"
        _fatal "Please upgrade your python version to 2.7 or 3.6+"
    fi
    echo $python
}


blade_path=`_full_real_path $0`
blade_dir=$(cd $(dirname $blade_path) && pwd)

if [[ -d "$blade_dir/src/blade" ]]; then
    blade_file="$blade_dir/src"
else
    blade_file="$blade_dir/blade.zip"
fi

if [[ -e $blade_dir/blade_init ]]; then
    source $blade_dir/blade_init
fi

python=$(_check_python)

# Check ninja
if ! command -v ninja &> /dev/null; then
    _fatal "Please install ninja v1.8+ (https://ninja-build.org)"
fi

# Check blade file
if [[ ! -e "$blade_file" ]]; then
    _fatal "Cannot find the core file $blade_file"
fi

${BLADE_PYTHON_INTERPRETER:-$python} $blade_file "$@"