1 files changed, 84 insertions, 0 deletions
diff --git a/third_party/waf/waflib/extras/print_commands.py b/third_party/waf/waflib/extras/print_commands.py
new file mode 100644
index 00000000000..ada0ee53f8c
--- /dev/null
+++ b/third_party/waf/waflib/extras/print_commands.py
@@ -0,0 +1,84 @@
+#! /usr/bin/env python
+# encoding: utf-8
+# WARNING! Do not edit! https://waf.io/book/index.html#_obtaining_the_waf_file
+
+#! /usr/bin/env python
+
+"""
+Illustrate how to override a class method to do something
+
+In this case, print the commands being executed as strings
+(the commands are usually lists, so this can be misleading)
+"""
+
+import sys
+from waflib import Context, Utils, Errors, Logs
+
+def exec_command(self, cmd, **kw):
+	subprocess = Utils.subprocess
+	kw['shell'] = isinstance(cmd, str)
+
+	if isinstance(cmd, str):
+		kw['shell'] = True
+		txt = cmd
+	else:
+		txt = ' '.join(repr(x) if ' ' in x else x for x in cmd)
+
+	Logs.debug('runner: %s', txt)
+	Logs.debug('runner_env: kw=%s', kw)
+
+	if self.logger:
+		self.logger.info(cmd)
+
+	if 'stdout' not in kw:
+		kw['stdout'] = subprocess.PIPE
+	if 'stderr' not in kw:
+		kw['stderr'] = subprocess.PIPE
+
+	if Logs.verbose and not kw['shell'] and not Utils.check_exe(cmd[0]):
+		raise Errors.WafError("Program %s not found!" % cmd[0])
+
+	wargs = {}
+	if 'timeout' in kw:
+		if kw['timeout'] is not None:
+			wargs['timeout'] = kw['timeout']
+		del kw['timeout']
+	if 'input' in kw:
+		if kw['input']:
+			wargs['input'] = kw['input']
+			kw['stdin'] = Utils.subprocess.PIPE
+		del kw['input']
+
+	if 'cwd' in kw:
+		if not isinstance(kw['cwd'], str):
+			kw['cwd'] = kw['cwd'].abspath()
+
+	try:
+		if kw['stdout'] or kw['stderr']:
+			p = subprocess.Popen(cmd, **kw)
+			(out, err) = p.communicate(**wargs)
+			ret = p.returncode
+		else:
+			out, err = (None, None)
+			ret = subprocess.Popen(cmd, **kw).wait(**wargs)
+	except Exception ,e:
+		raise Errors.WafError('Execution failure: %s' % str(e), ex=e)
+
+	if out:
+		if not isinstance(out, str):
+			out = out.decode(sys.stdout.encoding or 'iso8859-1')
+		if self.logger:
+			self.logger.debug('out: %s' % out)
+		else:
+			Logs.info(out, extra={'stream':sys.stdout, 'c1': ''})
+	if err:
+		if not isinstance(err, str):
+			err = err.decode(sys.stdout.encoding or 'iso8859-1')
+		if self.logger:
+			self.logger.error('err: %s' % err)
+		else:
+			Logs.info(err, extra={'stream':sys.stderr, 'c1': ''})
+
+	return ret
+
+Context.Context.exec_command = exec_command