整理

include/boost/process/v1/detail/posix/search_path.hpp

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+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_POSIX_SEARCH_PATH_HPP
+#define BOOST_PROCESS_POSIX_SEARCH_PATH_HPP
+
+#include <boost/process/v1/detail/config.hpp>
+#include <boost/process/v1/filesystem.hpp>
+#include <boost/tokenizer.hpp>
+#include <string>
+#include <stdexcept>
+#include <stdlib.h>
+#include <unistd.h>
+
+namespace boost { namespace process { BOOST_PROCESS_V1_INLINE namespace v1 { namespace detail { namespace posix {
+
+inline boost::process::v1::filesystem::path search_path(
+        const boost::process::v1::filesystem::path &filename,
+        const std::vector<boost::process::v1::filesystem::path> &path)
+{
+    for (const boost::process::v1::filesystem::path & pp : path)
+    {
+        auto p = pp / filename;
+#if defined(BOOST_PROCESS_USE_STD_FS)
+        std::error_code ec;
+#else
+        boost::system::error_code ec;
+#endif
+        bool file = boost::process::v1::filesystem::is_regular_file(p, ec);
+        if (!ec && file && ::access(p.c_str(), X_OK) == 0)
+            return p;
+    }
+    return "";
+}
+
+}}}}}
+
+#endif