tools/skqp/generate_gn_args

#! /usr/bin/env python

# Copyright 2018 Google Inc.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import argparse
import os
import sys

fmt = '''
target_cpu                       = "{arch}"
is_debug                         = false
ndk                              = "{ndk}"
ndk_api                          = {api_level}
skia_enable_fontmgr_empty        = true
skia_enable_pdf                  = false
skia_skqp_global_error_tolerance = 4
skia_use_dng_sdk                 = false
skia_use_expat                   = false
skia_use_icu                     = false
skia_use_libheif                 = false
skia_use_lua                     = false
skia_use_piex                    = false
skia_use_skcms                   = false
skia_skqp_enable_driver_correctness_workarounds = {enable_workarounds}
'''

def parse_args():
    parser = argparse.ArgumentParser(description='Generate args.gn file.')
    parser.add_argument('target_build_dir')
    parser.add_argument('android_ndk_dir' )
    parser.add_argument('--arch',  metavar='architecture', default='arm',
        help='defaults to "arm", valid values: "arm" "arm64" "x86" "x64"')
    parser.add_argument('--api_level', type=int, metavar='api_level',
        default=26, help='android API level, defaults to 26')
    parser.add_argument('--enable_workarounds', default=False,
        action='store_true', help="enable GPU work-arounds, defaults to false")

    # parse the args and convert enable_workarounds to string.
    args = parser.parse_args()
    args.enable_workarounds =  'true' if args.enable_workarounds else 'false'
    return args

def make_args_gn(out_dir, ndk, arch, api_level, enable_workarounds):
    if not os.path.exists(out_dir):
        os.makedirs(out_dir)
    with open(os.path.join(out_dir, 'args.gn'), 'w') as o:
        o.write(fmt.format(ndk=os.path.abspath(ndk),
                           arch=arch,
                           api_level=api_level,
                           enable_workarounds=enable_workarounds))

if __name__ == '__main__':
    args = parse_args()
    make_args_gn(args.target_build_dir,
                 args.android_ndk_dir,
                 args.arch,
                 args.api_level,
                 args.enable_workarounds)