build: add script to copy source tree to/from build server

.gitignore

@@ -221,3 +221,4 @@ build
 .ccls-cache
 socks.log
 .cache
+.config

tools/sync.py

@@ -0,0 +1,132 @@
+#!/usr/bin/env python3
+import json
+import os
+import sys
+import subprocess
+
+help_str = ('A config file `sync.json` has been created in {}. '
+           'Please specify the remote host and destination directory in this '
+           'config file and then run the sync script again.').format(os.path.join(os.getcwd(), '.config'))
+config_filename = os.path.join('.config', 'sync.json')
+rsync_path = os.getenv('RSYNC_PATH', default = 'rsync')
+
+
+def in_source_tree():
+    return os.path.isfile('tools/sync.py')
+
+
+def create_sample_config():
+    config_file = open(config_filename, mode='w')
+    data = {
+        'targets': {
+            'example': {
+                'host': 'Hostname',
+                'user': 'User to connect to the remote host as (optional)',
+                'path': 'Destination directory on remote host'
+            }
+        },
+
+        'default_target': 'example'
+    }
+
+    json.dump(data, config_file, indent=4)
+
+
+def read_config():
+    config_file = None
+    try:
+        config_file = open('sync.json')
+    except (OSError, FileNotFoundError):
+        create_sample_config()
+        print(help_str)
+        exit(0)
+
+    return json.load(config_file)
+
+
+def check_config(cfg):
+    if not 'targets' in cfg:
+        print('No targets specified in config file')
+        exit(-1)
+
+
+def make_full_target(target):
+    path = target['path'].replace('\\', '/')
+    if path[-1] != '/':
+        path += '/'
+
+    out = '{}:{}'.format(target['host'], path)
+
+    if 'user' in target:
+        out = '{}@{}'.format(target['user'], out)
+
+    return out
+
+
+def print_available_targets(targets):
+    print('Available targets:')
+
+    for name, target in targets.items():
+        print('  * {} ({})'.format(name, make_full_target(target)))
+
+
+if not in_source_tree():
+    print('This script must be executed from the root of the Socks source tree')
+    exit(-1)
+
+config = read_config()
+check_config(config);
+targets = config['targets']
+
+if len(sys.argv) < 2:
+    print('No mode specified. Available modes:')
+    print('  * pull: Update the local source tree to match the remote source tree')
+    print('  * push: Upload the remote source tree to match the local source tree')
+    exit(0)
+
+mode = sys.argv[1]
+if mode != 'pull' and mode != 'push':
+    print('Invalid sync mode "{}"'.format(mode))
+    exit(-1)
+
+target_name = ''
+
+if len(sys.argv) < 3:
+    if 'default_target' in config:
+        target_name = config['default_target']
+        print('No target specified. Using default target "{}"'.format(target_name))
+    else:
+        print('No target specified (and no default target configured)')
+        print_available_targets(config['targets'])
+        exit(0)
+
+if target_name not in targets:
+    print('Unknown target "{}"'.format(target_name))
+    print_available_targets(config['targets'])
+    exit(-1)
+
+target = targets[target_name]
+
+print('Syncing source tree with {} ({})'.format(make_full_target(target), mode))
+rsync_args = [
+    rsync_path,
+    '-azhP',
+    '--exclude',
+    'build/'
+]
+
+if mode == 'pull':
+    rsync_args += [ make_full_target(target), '.' ]
+else:
+    rsync_args += [ '.', make_full_target(target) ]
+
+
+rsync = subprocess.Popen(rsync_args)
+rsync.communicate()
+
+if rsync.returncode == 0:
+    print('** Sync completed successfully')
+else:
+    print('** Sync failed (error {})'.format(rsync.errorcode))
+
+exit(rsync.returncode)