159 lines
4.0 KiB
C++
159 lines
4.0 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2010-2014 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_IO_HPP
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#define __UTIL_IO_HPP
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#include "types.hpp"
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#include "memory.hpp"
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#include "platform.hpp"
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#include "nocopy.hpp"
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#include <cstdio>
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#include <cstdint>
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#include <memory>
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#include <boost/filesystem/path.hpp>
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#ifdef PLATFORM_WIN32
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#include <windows.h>
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#endif
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namespace util {
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/// Specifies bitwise combinations of IO access rights.
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enum access_t {
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ACCESS_READ = 1 << 0,
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ACCESS_WRITE = 1 << 1,
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ACCESS_READWRITE = ACCESS_READ | ACCESS_WRITE
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};
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///------------------------------------------------------------------------
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/// A simple RAII wrapper for file descriptors
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struct fd {
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public:
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explicit fd (int);
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explicit fd (const boost::filesystem::path&, access_t);
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~fd ();
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operator int (void) const { return m_fd; }
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private:
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int m_fd;
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};
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//-------------------------------------------------------------------------
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#ifdef PLATFORM_WIN32
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struct handle : util::nocopy {
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public:
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explicit handle (HANDLE);
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explicit handle ();
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~handle ();
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void reset (HANDLE);
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operator HANDLE (void) const;
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HANDLE fd;
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};
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#endif
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/// Reads an entire file into memory. Caller frees the result. Guarantees a
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/// null trailing byte.
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std::vector<char>
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slurp [[gnu::warn_unused_result]] (const boost::filesystem::path&);
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template <typename T>
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void write (const fd&, const T *restrict data, size_t count);
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template <typename T>
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void write (const fd&, const T *restrict first, const T *restrict last);
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template <typename T>
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void write (const boost::filesystem::path &, const T *restrict first, const T *restrict last);
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//-------------------------------------------------------------------------
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class indenter : public std::streambuf {
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protected:
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std::streambuf* m_dest;
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bool m_line_start;
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std::string m_indent;
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std::ostream* m_owner;
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protected:
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virtual int overflow (int ch) override;
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public:
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explicit indenter (std::streambuf* _dest, size_t _indent = 4);
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explicit indenter (std::ostream& _dest, size_t _indent = 4);
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virtual ~indenter ();
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};
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//-------------------------------------------------------------------------
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template <typename T>
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struct indented {
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indented (const T &_data);
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const T &data;
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};
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//-------------------------------------------------------------------------
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template <typename T>
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indented<T>
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make_indented (const T &_data);
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//-------------------------------------------------------------------------
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template <typename T>
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std::ostream&
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operator<< (std::ostream &os, const util::indented<T> &v);
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//-------------------------------------------------------------------------
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class scoped_cwd {
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public:
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scoped_cwd ();
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~scoped_cwd ();
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protected:
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std::string m_original;
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};
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//-------------------------------------------------------------------------
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class path_error : public std::runtime_error {
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public:
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path_error (const boost::filesystem::path &path):
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runtime_error ("Invalid path " + path.string ())
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{ ; }
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};
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}
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#ifdef PLATFORM_WIN32
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#include "io_win32.hpp"
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#else
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#include "io_posix.hpp"
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#endif
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#include "io.ipp"
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#endif
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