sync.sh and sync.bat replaced with sync.py.

Update README.md.

README.md

@@ -61,12 +61,7 @@ You can pass WebRTC version (branch) to script to fetch specific version.
 ```
 git clone https://github.com/UltraCoderRU/libwebrtc.git
 cd libwebrtc
-
+python3 sync.py [WEBRTC_VERSION]
-# Linux
-./sync.sh [WEBRTC_VERSION]
-
-# Windows
-sync.bat [WEBRTC_VERSION]
 ```
 
 ## Compiling
@@ -76,23 +71,14 @@ Create an output directory, browse inside it, then run CMake to configure projec
 ```
 mkdir build
 cd build
-
+cmake -G Ninja -DCMAKE_BUILD_TYPE=<Debug/Release> -DCMAKE_INSTALL_PREFIX=<install_path> ..
-# Linux:
-cmake -DCMAKE_BUILD_TYPE=<Debug/Release> -DCMAKE_INSTALL_PREFIX=<install_path> ..
-
-# Windows
-cmake -G "Visual Studio 15 2017 Win64" -DCMAKE_INSTALL_PREFIX=<install_path> ..
 ```
 
 After configuration build library using standard CMake commands.
 
 ```
-# Linux:
 cmake --build .
-sudo cmake --build . --target install
+cmake --install .
-
-# Windows:
-cmake --build . --config <Debug/Release> --target INSTALL
 ```
 
 The library will be located inside the `lib` subdirectory of the `<install_path>`.

sync.bat

@@ -1,39 +0,0 @@
-@echo off
-
-REM To determine last stable WebRTC revision,
-REM see https://chromiumdash.appspot.com/branches
-REM and https://chromiumdash.appspot.com/schedule
-set WEBRTC_REVISION=4280
-
-if not "%1"=="" set WEBRTC_REVISION="%1"
-
-set REPO_ROOT=%~dp0
-set PATH=%REPO_ROOT%depot_tools;%PATH%
-set DEPOT_TOOLS_WIN_TOOLCHAIN=0
-
-cd %REPO_ROOT%
-if not exist "depot_tools" (
-    echo Cloning Depot Tools...
-    git.exe clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
-)
-
-echo Updating Depot Tools...
-cd %REPO_ROOT%\depot_tools
-call update_depot_tools.bat
-
-cd %REPO_ROOT%
-if not exist "webrtc" (
-    echo Cloning WebRTC...
-    mkdir webrtc
-    cd webrtc
-    fetch --nohooks --no-history webrtc
-)
-
-echo Updating WebRTC to version %WEBRTC_REVISION%...
-cd %REPO_ROOT%\webrtc\src
-call gclient sync --with_branch_heads --reset
-git.exe fetch
-git.exe checkout -f -B %WEBRTC_REVISION% branch-heads/%WEBRTC_REVISION%
-call gclient sync --force -D --reset
-
-cd %REPO_ROOT%

sync.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import subprocess
+from pathlib import Path
+
+
+def execute(command: str):
+    subprocess.run(command, shell=True, check=True)
+
+
+def get_output(command: str):
+    return subprocess.run(command, capture_output=True, shell=True, check=True).stdout.decode()
+
+
+# To determine last stable WebRTC revision,
+# see https://chromiumdash.appspot.com/branches
+# and https://chromiumdash.appspot.com/schedule
+WEBRTC_REVISION = 4692
+
+if len(sys.argv) == 2:
+    WEBRTC_REVISION = sys.argv[1]
+
+REPO_ROOT = Path(__file__).resolve().parent
+DEPOT_TOOLS_DIR = REPO_ROOT / 'depot_tools'
+WEBRTC_DIR = REPO_ROOT / 'webrtc'
+SRC_DIR = WEBRTC_DIR / 'src'
+
+os.environ['PATH'] = '{}{}{}'.format(DEPOT_TOOLS_DIR, os.pathsep, os.environ['PATH'])
+if sys.platform == 'win32':
+    os.environ['DEPOT_TOOLS_WIN_TOOLCHAIN'] = '0'
+
+os.chdir(REPO_ROOT)
+if not os.path.isdir(DEPOT_TOOLS_DIR):
+    print('Cloning Depot Tools...')
+    execute('git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git')
+    os.chdir(DEPOT_TOOLS_DIR)
+
+    if sys.platform == 'win32':
+        execute('gclient --version')
+        execute('where python')
+
+    execute('python update_depot_tools_toggle.py --disable')
+else:
+    print('Updating Depot Tools to the latest revision...')
+    os.chdir(DEPOT_TOOLS_DIR)
+    execute('git checkout -q -f main')
+    execute('git pull -q')
+
+if not os.path.isdir(WEBRTC_DIR):
+    print('Cloning WebRTC...')
+    os.mkdir(WEBRTC_DIR)
+    os.chdir(WEBRTC_DIR)
+    execute('fetch --nohooks webrtc')
+    os.chdir(SRC_DIR)
+    execute('gclient sync --with_branch_heads --nohooks')
+else:
+    print('Updating WebRTC branches info...')
+    os.chdir(SRC_DIR)
+    execute('gclient sync --with_branch_heads --nohooks')
+
+# Latest Depot Tools versions are not compatible
+# with old WebRTC versions, so we peek revision
+# from around the same time as the WebRTC and
+# forbid gclient to auto-update Depot Tools.
+os.chdir(SRC_DIR)
+LAST_WEBRTC_COMMIT_DATE = get_output('git log -n 1 --pretty=format:%ci branch-heads/{}'.format(WEBRTC_REVISION)).strip()
+os.chdir(DEPOT_TOOLS_DIR)
+DEPOT_TOOLS_COMPATIBLE_REVISION = get_output('git rev-list -n 1 --before="{}" main'.format(LAST_WEBRTC_COMMIT_DATE)).strip()
+print('Updating Depot Tools to a compatible revision {}...'.format(DEPOT_TOOLS_COMPATIBLE_REVISION))
+execute('git checkout -f {}'.format(DEPOT_TOOLS_COMPATIBLE_REVISION))
+
+print('Updating WebRTC to version {}...'.format(WEBRTC_REVISION))
+os.chdir(SRC_DIR)
+execute('git clean -ffd')
+execute('git checkout -q -B {} branch-heads/{}'.format(WEBRTC_REVISION, WEBRTC_REVISION))
+execute('gclient sync --force -D --reset')

sync.sh

@@ -1,41 +0,0 @@
-#!/bin/bash
-set -e
-
-# To determine last stable WebRTC revision,
-# see https://chromiumdash.appspot.com/branches
-# and https://chromiumdash.appspot.com/schedule
-WEBRTC_REVISION=4280
-
-if [ $# -eq 1 ]; then
-  WEBRTC_REVISION=$1
-fi
-
-REPO_ROOT=$(dirname $(readlink -f $0))
-export PATH=${REPO_ROOT}/depot_tools:$PATH
-
-cd ${REPO_ROOT}
-if [ ! -d depot_tools ];
-then
-    echo "Cloning Depot Tools..."
-    git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
-fi
-
-echo "Updating Depot Tools..."
-cd ${REPO_ROOT}/depot_tools
-./update_depot_tools
-
-cd ${REPO_ROOT}
-if [ ! -d webrtc ];
-then
-    echo "Cloning WebRTC..."
-    mkdir webrtc
-    cd webrtc
-    fetch --nohooks --no-history webrtc
-fi
-
-echo "Updating WebRTC to version ${WEBRTC_REVISION}..."
-cd ${REPO_ROOT}/webrtc/src
-gclient sync --with_branch_heads --reset
-git fetch
-git checkout -f -B ${WEBRTC_REVISION} branch-heads/${WEBRTC_REVISION}
-gclient sync --force -D --reset