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Refactored redirections and hooks

This commit is contained in:
Snaipe 2015-11-18 16:31:31 +01:00
parent 221df82a12
commit a7d5ecf69c
8 changed files with 401 additions and 331 deletions
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1
.gitignore vendored
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@ -13,6 +13,7 @@
!*.m
!*.cc
!*.h
!*.hxx
!*.rst
!*.po
!*.in

5
CMakeLists.txt
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@ -213,6 +213,11 @@ set(INTERFACE_FILES
include/criterion/internal/preprocess.h
include/criterion/internal/theories.h
include/criterion/internal/parameterized.h
include/criterion/internal/stdio_filebuf.hxx
include/criterion/internal/stream.hxx
include/criterion/internal/hooks.h
include/criterion/internal/redirect.h
include/criterion/internal/stdio_filebuf.hxx
)
# Generate the configure file

56
include/criterion/hooks.h
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@ -24,8 +24,7 @@
#ifndef CRITERION_HOOKS_H_
# define CRITERION_HOOKS_H_
# include "internal/common.h"
# include "types.h"
# include "internal/hooks.h"
typedef enum {
PRE_ALL,
@ -43,57 +42,6 @@ typedef enum {
typedef void (*f_report_hook)();
# define CR_HOOK_IDENTIFIER_(Suffix) CR_HOOK_IDENTIFIER__(__LINE__, Suffix)
# define CR_HOOK_IDENTIFIER__(Line, Suffix) CR_HOOK_IDENTIFIER___(Line, Suffix)
# define CR_HOOK_IDENTIFIER___(Line, Suffix) hook_l ## Line ## _ ## Suffix
# ifdef __cplusplus
# define CR_HOOK_PROTOTYPE_ \
extern "C" void CR_HOOK_IDENTIFIER_(impl)
# else
# define CR_HOOK_PROTOTYPE_ \
void CR_HOOK_IDENTIFIER_(impl)
# endif
// Section abbreviations
# define CR_HOOK_SECTION_PRE_ALL cr_pra
# define CR_HOOK_SECTION_PRE_SUITE cr_prs
# define CR_HOOK_SECTION_PRE_INIT cr_pri
# define CR_HOOK_SECTION_PRE_TEST cr_prt
# define CR_HOOK_SECTION_ASSERT cr_ast
# define CR_HOOK_SECTION_THEORY_FAIL cr_thf
# define CR_HOOK_SECTION_TEST_CRASH cr_tsc
# define CR_HOOK_SECTION_POST_TEST cr_pot
# define CR_HOOK_SECTION_POST_FINI cr_pof
# define CR_HOOK_SECTION_POST_SUITE cr_pos
# define CR_HOOK_SECTION_POST_ALL cr_poa
# define CR_HOOK_SECTION(Kind) CR_HOOK_SECTION_ ## Kind
# define CR_HOOK_SECTION_STRINGIFY__(Sec) #Sec
# define CR_HOOK_SECTION_STRINGIFY_(Sec) CR_HOOK_SECTION_STRINGIFY__(Sec)
# define CR_HOOK_SECTION_STRINGIFY(Kind) CR_HOOK_SECTION_STRINGIFY_(CR_HOOK_SECTION(Kind))
# define CR_HOOK_PARAM_TYPE_PRE_ALL struct criterion_test_set *
# define CR_HOOK_PARAM_TYPE_PRE_SUITE struct criterion_suite_set *
# define CR_HOOK_PARAM_TYPE_PRE_INIT struct criterion_test *
# define CR_HOOK_PARAM_TYPE_PRE_TEST struct criterion_test *
# define CR_HOOK_PARAM_TYPE_ASSERT struct criterion_assert_stats *
# define CR_HOOK_PARAM_TYPE_THEORY_FAIL struct criterion_theory_stats *
# define CR_HOOK_PARAM_TYPE_TEST_CRASH struct criterion_test_stats *
# define CR_HOOK_PARAM_TYPE_POST_TEST struct criterion_test_stats *
# define CR_HOOK_PARAM_TYPE_POST_FINI struct criterion_test_stats *
# define CR_HOOK_PARAM_TYPE_POST_SUITE struct criterion_suite_stats *
# define CR_HOOK_PARAM_TYPE_POST_ALL struct criterion_global_stats *
# define CR_HOOK_PARAM_TYPE(Kind) CR_HOOK_PARAM_TYPE_ ## Kind
# define ReportHook(Kind) \
CR_HOOK_PROTOTYPE_(CR_HOOK_PARAM_TYPE(Kind)); \
CR_SECTION_(CR_HOOK_SECTION_STRINGIFY(Kind)) \
f_report_hook CR_HOOK_IDENTIFIER_(func) = \
(f_report_hook) CR_HOOK_IDENTIFIER_(impl) \
CR_SECTION_SUFFIX_; \
CR_HOOK_PROTOTYPE_
# define ReportHook(Kind) CR_REPORT_HOOK_IMPL(Kind)
#endif /* !CRITERION_HOOKS_H_ */

84
include/criterion/internal/hooks.h Normal file
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@ -0,0 +1,84 @@
/*
* The MIT License (MIT)
*
* Copyright © 2015 Franklin "Snaipe" Mathieu <http://snai.pe/>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef CRITERION_INTERNAL_HOOKS_H_
# define CRITERION_INTERNAL_HOOKS_H_
# include "common.h"
# include "../types.h"
# define CR_HOOK_IDENTIFIER_(Suffix) CR_HOOK_IDENTIFIER__(__LINE__, Suffix)
# define CR_HOOK_IDENTIFIER__(Line, Suffix) CR_HOOK_IDENTIFIER___(Line, Suffix)
# define CR_HOOK_IDENTIFIER___(Line, Suffix) hook_l ## Line ## _ ## Suffix
# ifdef __cplusplus
# define CR_HOOK_PROTOTYPE_ \
extern "C" void CR_HOOK_IDENTIFIER_(impl)
# else
# define CR_HOOK_PROTOTYPE_ \
void CR_HOOK_IDENTIFIER_(impl)
# endif
// Section abbreviations
# define CR_HOOK_SECTION_PRE_ALL cr_pra
# define CR_HOOK_SECTION_PRE_SUITE cr_prs
# define CR_HOOK_SECTION_PRE_INIT cr_pri
# define CR_HOOK_SECTION_PRE_TEST cr_prt
# define CR_HOOK_SECTION_ASSERT cr_ast
# define CR_HOOK_SECTION_THEORY_FAIL cr_thf
# define CR_HOOK_SECTION_TEST_CRASH cr_tsc
# define CR_HOOK_SECTION_POST_TEST cr_pot
# define CR_HOOK_SECTION_POST_FINI cr_pof
# define CR_HOOK_SECTION_POST_SUITE cr_pos
# define CR_HOOK_SECTION_POST_ALL cr_poa
# define CR_HOOK_SECTION(Kind) CR_HOOK_SECTION_ ## Kind
# define CR_HOOK_SECTION_STRINGIFY__(Sec) #Sec
# define CR_HOOK_SECTION_STRINGIFY_(Sec) CR_HOOK_SECTION_STRINGIFY__(Sec)
# define CR_HOOK_SECTION_STRINGIFY(Kind) CR_HOOK_SECTION_STRINGIFY_(CR_HOOK_SECTION(Kind))
# define CR_HOOK_PARAM_TYPE_PRE_ALL struct criterion_test_set *
# define CR_HOOK_PARAM_TYPE_PRE_SUITE struct criterion_suite_set *
# define CR_HOOK_PARAM_TYPE_PRE_INIT struct criterion_test *
# define CR_HOOK_PARAM_TYPE_PRE_TEST struct criterion_test *
# define CR_HOOK_PARAM_TYPE_ASSERT struct criterion_assert_stats *
# define CR_HOOK_PARAM_TYPE_THEORY_FAIL struct criterion_theory_stats *
# define CR_HOOK_PARAM_TYPE_TEST_CRASH struct criterion_test_stats *
# define CR_HOOK_PARAM_TYPE_POST_TEST struct criterion_test_stats *
# define CR_HOOK_PARAM_TYPE_POST_FINI struct criterion_test_stats *
# define CR_HOOK_PARAM_TYPE_POST_SUITE struct criterion_suite_stats *
# define CR_HOOK_PARAM_TYPE_POST_ALL struct criterion_global_stats *
# define CR_HOOK_PARAM_TYPE(Kind) CR_HOOK_PARAM_TYPE_ ## Kind
# define CR_REPORT_HOOK_IMPL(Kind) \
CR_HOOK_PROTOTYPE_(CR_HOOK_PARAM_TYPE(Kind)); \
CR_SECTION_(CR_HOOK_SECTION_STRINGIFY(Kind)) \
f_report_hook CR_HOOK_IDENTIFIER_(func) = \
(f_report_hook) CR_HOOK_IDENTIFIER_(impl) \
CR_SECTION_SUFFIX_; \
CR_HOOK_PROTOTYPE_
#endif /* !CRITERION_INTERNAL_HOOKS_H_ */

48
include/criterion/internal/redirect.h Normal file
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@ -0,0 +1,48 @@
#ifndef CRITERION_INTERNAL_REDIRECT_H_
# define CRITERION_INTERNAL_REDIRECT_H_
# include "common.h"
# include "assert.h"
# define cr_assert_redir_op_(Fail, Fun, Op, File, Str, ...) \
CR_EXPAND(cr_assert_impl( \
Fail, \
!(Fun((File), (Str)) Op 0), \
dummy, \
CRITERION_ASSERT_MSG_FILE_STR_MATCH, \
(CR_STR(File), Str), \
__VA_ARGS__ \
))
# define cr_assert_redir_op_va_(Fail, Fun, Op, ...) \
CR_EXPAND(cr_assert_redir_op_( \
Fail, \
Fun, \
Op, \
CR_VA_HEAD(__VA_ARGS__), \
CR_VA_HEAD(CR_VA_TAIL(__VA_ARGS__)), \
CR_VA_TAIL(CR_VA_TAIL(__VA_ARGS__)) \
))
# define cr_assert_redir_f_op_(Fail, Fun, Op, File, Ref, ...) \
CR_EXPAND(cr_assert_impl( \
Fail, \
!(Fun((File), (Ref)) Op 0), \
dummy, \
CRITERION_ASSERT_MSG_FILE_MATCH, \
(CR_STR(File), CR_STR(Ref)), \
__VA_ARGS__ \
))
# define cr_assert_redir_f_op_va_(Fail, Fun, Op, ...) \
CR_EXPAND(cr_assert_redir_op_( \
Fail, \
Fun, \
Op, \
CR_VA_HEAD(__VA_ARGS__), \
CR_VA_HEAD(CR_VA_TAIL(__VA_ARGS__)), \
CR_VA_TAIL(CR_VA_TAIL(__VA_ARGS__)) \
))
#endif /* !CRITERION_INTERNAL_REDIRECT_H_ */

138
include/criterion/internal/stdio_filebuf.hxx Normal file
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@ -0,0 +1,138 @@
#ifndef CRITERION_INTERNAL_STDIO_FILEBUF_HXX_
# define CRITERION_INTERNAL_STDIO_FILEBUF_HXX_
# include <fstream>
namespace criterion { namespace internal {
template <typename CharT, typename Traits = std::char_traits<CharT>>
class stdio_sync_filebuf : public std::basic_streambuf<CharT, Traits> {
public:
typedef Traits traits;
typedef std::basic_filebuf<CharT, Traits> super;
typedef typename Traits::int_type int_type;
typedef typename Traits::pos_type pos_type;
typedef typename Traits::off_type off_type;
stdio_sync_filebuf(std::FILE *file)
: file(file)
, lastchar(Traits::eof())
{}
stdio_sync_filebuf(stdio_sync_filebuf&& other) = default;
stdio_sync_filebuf& operator=(stdio_sync_filebuf&& other) = default;
void swap(stdio_sync_filebuf& other) {
super::swap(other);
std::swap(file, other.file);
std::swap(lastchar, other.lastchar);
}
protected:
int_type syncgetc();
int_type syncungetc(int_type);
int_type syncputc(int_type);
virtual std::streampos seekoff(std::streamoff off,
std::ios_base::seekdir dir,
std::ios_base::openmode = std::ios_base::in | std::ios_base::out) {
int whence;
if (dir == std::ios_base::beg)
whence = SEEK_SET;
else if (dir == std::ios_base::cur)
whence = SEEK_CUR;
else
whence = SEEK_END;
if (!fseek(file, off, whence))
return std::streampos(std::ftell(file));
return std::streamoff(-1);
}
virtual std::streampos seekpos(std::streampos pos,
std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) {
return seekoff(std::streamoff(pos), std::ios_base::beg, mode);
}
virtual std::streamsize xsgetn(CharT* s, std::streamsize n);
virtual std::streamsize xsputn(const CharT* s, std::streamsize n);
virtual int sync() {
return std::fflush(file);
}
virtual int_type underflow() {
int_type c = syncgetc();
return syncungetc(c);
}
virtual int_type uflow() {
return lastchar = syncgetc();
}
static inline bool is_eof(int_type c) {
static const int_type eof = Traits::eof();
return Traits::eq_int_type(c, eof);
}
virtual int_type overflow(int_type c = Traits::eof()) {
int_type ret;
if (is_eof(c)) {
if (std::fflush(file))
ret = Traits::eof();
else
ret = Traits::not_eof(c);
} else {
ret = syncputc(c);
}
return ret;
}
virtual int_type pbackfail(int_type c = Traits::eof()) {
int_type ret = syncungetc(is_eof(c) && !is_eof(lastchar) ? lastchar : c);
lastchar = Traits::eof();
return ret;
}
private:
std::FILE *file;
bool file_open;
int_type lastchar;
};
template <>
inline stdio_sync_filebuf<char>::int_type
stdio_sync_filebuf<char>::syncgetc() {
return std::getc(file);
}
template <>
inline stdio_sync_filebuf<char>::int_type
stdio_sync_filebuf<char>::syncungetc(stdio_sync_filebuf<char>::int_type c) {
return std::ungetc(c, file);
}
template <>
inline stdio_sync_filebuf<char>::int_type
stdio_sync_filebuf<char>::syncputc(stdio_sync_filebuf<char>::int_type c) {
return std::putc(c, file);
}
template <>
inline std::streamsize
stdio_sync_filebuf<char>::xsgetn(char *s, std::streamsize n) {
std::streamsize res = std::fread(s, 1, n, file);
lastchar = res > 0 ? traits::to_int_type(s[res - 1]) : traits::eof();
return res;
}
template <>
inline std::streamsize
stdio_sync_filebuf<char>::xsputn(const char *s, std::streamsize n) {
return std::fwrite(s, 1, n, file);
}
}}
#endif /* !CRITERION_INTERNAL_STDIO_FILEBUF_HXX_ */

114
include/criterion/internal/stream.hxx Normal file
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@ -0,0 +1,114 @@
#ifndef CRITERION_INTERNAL_STREAM_HXX_
# define CRITERION_INTERNAL_STREAM_HXX_
# include <fstream>
# include <cstdio>
# include <memory>
# include "stdio_filebuf.hxx"
namespace criterion { namespace internal {
template <typename CharT, typename Super>
class stream_mixin : public Super {
public:
stream_mixin(FILE* f)
: Super()
, fbuf(new stdio_sync_filebuf<CharT>(f))
, file(f)
{
std::ios::rdbuf(&*fbuf);
}
stream_mixin(const stream_mixin& other) = delete;
stream_mixin& operator=(const stream_mixin& other) = delete;
stream_mixin(stream_mixin&& other) :
fbuf(std::move(other.fbuf)),
file(std::move(other.file))
{}
stream_mixin& operator=(stream_mixin&& other) {
fbuf = std::move(other.fbuf);
file = std::move(other.file);
}
void close(void) {
Super::flush();
Super::close();
std::fclose(file);
}
private:
std::shared_ptr<stdio_sync_filebuf<CharT>> fbuf;
std::FILE* file;
};
template <typename CharT>
using ofstream_mixin = stream_mixin<CharT, std::basic_ofstream<CharT>>;
template <typename CharT>
using ifstream_mixin = stream_mixin<CharT, std::basic_ifstream<CharT>>;
template <typename CharT>
using fstream_mixin = stream_mixin<CharT, std::basic_fstream<CharT>>;
template <typename CharT>
class basic_ofstream : public ofstream_mixin<CharT> {
public:
basic_ofstream(FILE* f)
: ofstream_mixin<CharT>(f)
{}
basic_ofstream(basic_ofstream&& other)
: ofstream_mixin<CharT>(std::move(other))
{}
};
template <typename CharT>
class basic_ifstream : public ifstream_mixin<CharT> {
public:
basic_ifstream(FILE* f)
: ifstream_mixin<CharT>(f)
{}
basic_ifstream(basic_ifstream&& other)
: ifstream_mixin<CharT>(std::move(other))
{}
};
template <typename CharT>
class basic_fstream : public fstream_mixin<CharT> {
public:
basic_fstream(FILE* f)
: fstream_mixin<CharT>(f)
{}
basic_fstream(basic_fstream&& other)
: fstream_mixin<CharT>(std::move(other))
{}
};
struct get_redirected_out_stream_ {
static inline basic_ofstream<char>& call(std::FILE* f) {
static std::unique_ptr<basic_ofstream<char>> stream;
if (!stream)
stream.reset(new basic_ofstream<char>(f));
return *stream;
}
};
struct get_redirected_in_stream_ {
static inline basic_ifstream<char>& call(std::FILE* f) {
static std::unique_ptr<basic_ifstream<char>> stream;
if (!stream)
stream.reset(new basic_ifstream<char>(f));
return *stream;
}
};
}}
#endif /* !CRITERION_INTERNAL_STREAM_HXX_ */

286
include/criterion/redirect.h
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@ -25,12 +25,10 @@
# define CRITERION_REDIRECT_H_
# include "internal/common.h"
# include "assert.h"
# include "internal/redirect.h"
# ifdef __cplusplus
# include <cstdio>
# include <memory>
# include <fstream>
# else
# include <stdio.h>
# endif
@ -52,46 +50,6 @@ CR_API CR_STDN FILE *cr_mock_file_size(size_t max_size);
CR_END_C_API
# define cr_assert_redir_op_(Fail, Fun, Op, File, Str, ...) \
CR_EXPAND(cr_assert_impl( \
Fail, \
!(Fun((File), (Str)) Op 0), \
dummy, \
CRITERION_ASSERT_MSG_FILE_STR_MATCH, \
(CR_STR(File), Str), \
__VA_ARGS__ \
))
# define cr_assert_redir_op_va_(Fail, Fun, Op, ...) \
CR_EXPAND(cr_assert_redir_op_( \
Fail, \
Fun, \
Op, \
CR_VA_HEAD(__VA_ARGS__), \
CR_VA_HEAD(CR_VA_TAIL(__VA_ARGS__)), \
CR_VA_TAIL(CR_VA_TAIL(__VA_ARGS__)) \
))
# define cr_assert_redir_f_op_(Fail, Fun, Op, File, Ref, ...) \
CR_EXPAND(cr_assert_impl( \
Fail, \
!(Fun((File), (Ref)) Op 0), \
dummy, \
CRITERION_ASSERT_MSG_FILE_MATCH, \
(CR_STR(File), CR_STR(Ref)), \
__VA_ARGS__ \
))
# define cr_assert_redir_f_op_va_(Fail, Fun, Op, ...) \
CR_EXPAND(cr_assert_redir_op_( \
Fail, \
Fun, \
Op, \
CR_VA_HEAD(__VA_ARGS__), \
CR_VA_HEAD(CR_VA_TAIL(__VA_ARGS__)), \
CR_VA_TAIL(CR_VA_TAIL(__VA_ARGS__)) \
))
# define cr_assert_file_contents_eq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_ABORT_, cr_file_match_str, ==, __VA_ARGS__))
# define cr_expect_file_contents_eq_str(...) CR_EXPAND(cr_assert_redir_op_va_(CR_FAIL_CONTINUES_, cr_file_match_str, ==, __VA_ARGS__))
@ -129,250 +87,24 @@ CR_END_C_API
# define cr_expect_stderr_neq(...) CR_EXPAND(cr_assert_redir_f_op_va_(CR_FAIL_CONTINUES_, cr_file_match_file, !=, cr_get_redirected_stderr(), __VA_ARGS__))
# ifdef __cplusplus
# include "internal/stream.hxx"
namespace criterion {
template <typename CharT, typename Traits = std::char_traits<CharT>>
class stdio_sync_filebuf : public std::basic_streambuf<CharT, Traits> {
public:
typedef Traits traits;
typedef std::basic_filebuf<CharT, Traits> super;
typedef typename Traits::int_type int_type;
typedef typename Traits::pos_type pos_type;
typedef typename Traits::off_type off_type;
stdio_sync_filebuf(std::FILE *file)
: file(file)
, lastchar(Traits::eof())
{}
stdio_sync_filebuf(stdio_sync_filebuf&& other) = default;
stdio_sync_filebuf& operator=(stdio_sync_filebuf&& other) = default;
void swap(stdio_sync_filebuf& other) {
super::swap(other);
std::swap(file, other.file);
std::swap(lastchar, other.lastchar);
}
protected:
int_type syncgetc();
int_type syncungetc(int_type);
int_type syncputc(int_type);
virtual std::streampos seekoff(std::streamoff off,
std::ios_base::seekdir dir,
std::ios_base::openmode = std::ios_base::in | std::ios_base::out) {
int whence;
if (dir == std::ios_base::beg)
whence = SEEK_SET;
else if (dir == std::ios_base::cur)
whence = SEEK_CUR;
else
whence = SEEK_END;
if (!fseek(file, off, whence))
return std::streampos(std::ftell(file));
return std::streamoff(-1);
}
virtual std::streampos seekpos(std::streampos pos,
std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) {
return seekoff(std::streamoff(pos), std::ios_base::beg, mode);
}
virtual std::streamsize xsgetn(CharT* s, std::streamsize n);
virtual std::streamsize xsputn(const CharT* s, std::streamsize n);
virtual int sync() {
return std::fflush(file);
}
virtual int_type underflow() {
int_type c = syncgetc();
return syncungetc(c);
}
virtual int_type uflow() {
return lastchar = syncgetc();
}
static inline bool is_eof(int_type c) {
static const int_type eof = Traits::eof();
return Traits::eq_int_type(c, eof);
}
virtual int_type overflow(int_type c = Traits::eof()) {
int_type ret;
if (is_eof(c)) {
if (std::fflush(file))
ret = Traits::eof();
else
ret = Traits::not_eof(c);
} else {
ret = syncputc(c);
}
return ret;
}
virtual int_type pbackfail(int_type c = Traits::eof()) {
int_type ret = syncungetc(is_eof(c) && !is_eof(lastchar) ? lastchar : c);
lastchar = Traits::eof();
return ret;
}
private:
std::FILE *file;
bool file_open;
int_type lastchar;
};
template <>
inline stdio_sync_filebuf<char>::int_type
stdio_sync_filebuf<char>::syncgetc() {
return std::getc(file);
}
template <>
inline stdio_sync_filebuf<char>::int_type
stdio_sync_filebuf<char>::syncungetc(stdio_sync_filebuf<char>::int_type c) {
return std::ungetc(c, file);
}
template <>
inline stdio_sync_filebuf<char>::int_type
stdio_sync_filebuf<char>::syncputc(stdio_sync_filebuf<char>::int_type c) {
return std::putc(c, file);
}
template <>
inline std::streamsize
stdio_sync_filebuf<char>::xsgetn(char *s, std::streamsize n) {
std::streamsize res = std::fread(s, 1, n, file);
lastchar = res > 0 ? traits::to_int_type(s[res - 1]) : traits::eof();
return res;
}
template <>
inline std::streamsize
stdio_sync_filebuf<char>::xsputn(const char *s, std::streamsize n) {
return std::fwrite(s, 1, n, file);
}
template <typename CharT, typename Super>
class stream_mixin : public Super {
public:
stream_mixin(FILE* f)
: Super()
, fbuf(new stdio_sync_filebuf<CharT>(f))
, file(f)
{
std::ios::rdbuf(&*fbuf);
}
stream_mixin(const stream_mixin& other) = delete;
stream_mixin& operator=(const stream_mixin& other) = delete;
stream_mixin(stream_mixin&& other) :
fbuf(std::move(other.fbuf)),
file(std::move(other.file))
{}
stream_mixin& operator=(stream_mixin&& other) {
fbuf = std::move(other.fbuf);
file = std::move(other.file);
}
void close(void) {
Super::flush();
Super::close();
std::fclose(file);
}
private:
std::shared_ptr<stdio_sync_filebuf<CharT>> fbuf;
std::FILE* file;
};
template <typename CharT>
using ofstream_mixin = stream_mixin<CharT, std::basic_ofstream<CharT>>;
template <typename CharT>
using ifstream_mixin = stream_mixin<CharT, std::basic_ifstream<CharT>>;
template <typename CharT>
using fstream_mixin = stream_mixin<CharT, std::basic_fstream<CharT>>;
template <typename CharT>
class basic_ofstream : public ofstream_mixin<CharT> {
public:
basic_ofstream(FILE* f)
: ofstream_mixin<CharT>(f)
{}
basic_ofstream(basic_ofstream&& other)
: ofstream_mixin<CharT>(std::move(other))
{}
};
template <typename CharT>
class basic_ifstream : public ifstream_mixin<CharT> {
public:
basic_ifstream(FILE* f)
: ifstream_mixin<CharT>(f)
{}
basic_ifstream(basic_ifstream&& other)
: ifstream_mixin<CharT>(std::move(other))
{}
};
template <typename CharT>
class basic_fstream : public fstream_mixin<CharT> {
public:
basic_fstream(FILE* f)
: fstream_mixin<CharT>(f)
{}
basic_fstream(basic_fstream&& other)
: fstream_mixin<CharT>(std::move(other))
{}
};
using ofstream = basic_ofstream<char>;
using ifstream = basic_ifstream<char>;
using fstream = basic_fstream<char>;
struct get_redirected_out_stream_ {
static inline ofstream& call(std::FILE* f) {
static std::unique_ptr<ofstream> stream;
if (!stream)
stream.reset(new ofstream(f));
return *stream;
}
};
struct get_redirected_in_stream_ {
static inline ifstream& call(std::FILE* f) {
static std::unique_ptr<ifstream> stream;
if (!stream)
stream.reset(new ifstream(f));
return *stream;
}
};
using ofstream = internal::basic_ofstream<char>;
using ifstream = internal::basic_ifstream<char>;
using fstream = internal::basic_fstream<char>;
static inline ofstream& get_redirected_cin(void) {
return get_redirected_out_stream_::call(cr_get_redirected_stdin());
return internal::get_redirected_out_stream_::call(cr_get_redirected_stdin());
}
static inline ifstream& get_redirected_cout(void) {
return get_redirected_in_stream_::call(cr_get_redirected_stdout());
return internal::get_redirected_in_stream_::call(cr_get_redirected_stdout());
}
static inline ifstream& get_redirected_cerr(void) {
return get_redirected_in_stream_::call(cr_get_redirected_stderr());
return internal::get_redirected_in_stream_::call(cr_get_redirected_stderr());
}
# if __GNUC__ >= 5