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400 lines
11 KiB
C++
400 lines
11 KiB
C++
// -*- C++ -*-
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//===--------------------------- strstream --------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_STRSTREAM
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#define _LIBCPP_STRSTREAM
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/*
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strstream synopsis
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class strstreambuf
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: public basic_streambuf<char>
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{
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public:
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explicit strstreambuf(streamsize alsize_arg = 0);
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strstreambuf(void* (*palloc_arg)(size_t), void (*pfree_arg)(void*));
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strstreambuf(char* gnext_arg, streamsize n, char* pbeg_arg = 0);
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strstreambuf(const char* gnext_arg, streamsize n);
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strstreambuf(signed char* gnext_arg, streamsize n, signed char* pbeg_arg = 0);
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strstreambuf(const signed char* gnext_arg, streamsize n);
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strstreambuf(unsigned char* gnext_arg, streamsize n, unsigned char* pbeg_arg = 0);
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strstreambuf(const unsigned char* gnext_arg, streamsize n);
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strstreambuf(strstreambuf&& rhs);
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strstreambuf& operator=(strstreambuf&& rhs);
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virtual ~strstreambuf();
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void swap(strstreambuf& rhs);
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void freeze(bool freezefl = true);
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char* str();
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int pcount() const;
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protected:
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virtual int_type overflow (int_type c = EOF);
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virtual int_type pbackfail(int_type c = EOF);
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virtual int_type underflow();
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virtual pos_type seekoff(off_type off, ios_base::seekdir way,
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ios_base::openmode which = ios_base::in | ios_base::out);
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virtual pos_type seekpos(pos_type sp,
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ios_base::openmode which = ios_base::in | ios_base::out);
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virtual streambuf* setbuf(char* s, streamsize n);
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private:
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typedef T1 strstate; // exposition only
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static const strstate allocated; // exposition only
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static const strstate constant; // exposition only
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static const strstate dynamic; // exposition only
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static const strstate frozen; // exposition only
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strstate strmode; // exposition only
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streamsize alsize; // exposition only
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void* (*palloc)(size_t); // exposition only
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void (*pfree)(void*); // exposition only
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};
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class istrstream
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: public basic_istream<char>
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{
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public:
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explicit istrstream(const char* s);
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explicit istrstream(char* s);
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istrstream(const char* s, streamsize n);
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istrstream(char* s, streamsize n);
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virtual ~istrstream();
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strstreambuf* rdbuf() const;
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char *str();
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private:
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strstreambuf sb; // exposition only
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};
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class ostrstream
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: public basic_ostream<char>
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{
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public:
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ostrstream();
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ostrstream(char* s, int n, ios_base::openmode mode = ios_base::out);
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virtual ~ostrstream();
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strstreambuf* rdbuf() const;
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void freeze(bool freezefl = true);
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char* str();
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int pcount() const;
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private:
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strstreambuf sb; // exposition only
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};
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class strstream
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: public basic_iostream<char>
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{
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public:
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// Types
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typedef char char_type;
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typedef char_traits<char>::int_type int_type;
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typedef char_traits<char>::pos_type pos_type;
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typedef char_traits<char>::off_type off_type;
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// constructors/destructor
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strstream();
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strstream(char* s, int n, ios_base::openmode mode = ios_base::in | ios_base::out);
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virtual ~strstream();
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// Members:
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strstreambuf* rdbuf() const;
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void freeze(bool freezefl = true);
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int pcount() const;
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char* str();
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private:
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strstreambuf sb; // exposition only
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};
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} // std
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*/
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#include <__config>
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#include <ostream>
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#include <istream>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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class _LIBCPP_TYPE_VIS strstreambuf
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: public streambuf
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{
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public:
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explicit strstreambuf(streamsize __alsize = 0);
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strstreambuf(void* (*__palloc)(size_t), void (*__pfree)(void*));
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strstreambuf(char* __gnext, streamsize __n, char* __pbeg = 0);
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strstreambuf(const char* __gnext, streamsize __n);
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strstreambuf(signed char* __gnext, streamsize __n, signed char* __pbeg = 0);
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strstreambuf(const signed char* __gnext, streamsize __n);
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strstreambuf(unsigned char* __gnext, streamsize __n, unsigned char* __pbeg = 0);
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strstreambuf(const unsigned char* __gnext, streamsize __n);
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#ifndef _LIBCPP_CXX03_LANG
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_LIBCPP_INLINE_VISIBILITY
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strstreambuf(strstreambuf&& __rhs);
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_LIBCPP_INLINE_VISIBILITY
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strstreambuf& operator=(strstreambuf&& __rhs);
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#endif // _LIBCPP_CXX03_LANG
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virtual ~strstreambuf();
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void swap(strstreambuf& __rhs);
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void freeze(bool __freezefl = true);
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char* str();
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int pcount() const;
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protected:
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virtual int_type overflow (int_type __c = EOF);
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virtual int_type pbackfail(int_type __c = EOF);
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virtual int_type underflow();
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virtual pos_type seekoff(off_type __off, ios_base::seekdir __way,
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ios_base::openmode __which = ios_base::in | ios_base::out);
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virtual pos_type seekpos(pos_type __sp,
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ios_base::openmode __which = ios_base::in | ios_base::out);
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private:
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typedef unsigned __mode_type;
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static const __mode_type __allocated = 0x01;
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static const __mode_type __constant = 0x02;
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static const __mode_type __dynamic = 0x04;
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static const __mode_type __frozen = 0x08;
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static const streamsize __default_alsize = 4096;
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__mode_type __strmode_;
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streamsize __alsize_;
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void* (*__palloc_)(size_t);
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void (*__pfree_)(void*);
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void __init(char* __gnext, streamsize __n, char* __pbeg);
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};
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#ifndef _LIBCPP_CXX03_LANG
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inline _LIBCPP_INLINE_VISIBILITY
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strstreambuf::strstreambuf(strstreambuf&& __rhs)
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: streambuf(__rhs),
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__strmode_(__rhs.__strmode_),
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__alsize_(__rhs.__alsize_),
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__palloc_(__rhs.__palloc_),
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__pfree_(__rhs.__pfree_)
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{
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__rhs.setg(nullptr, nullptr, nullptr);
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__rhs.setp(nullptr, nullptr);
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}
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inline _LIBCPP_INLINE_VISIBILITY
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strstreambuf&
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strstreambuf::operator=(strstreambuf&& __rhs)
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{
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if (eback() && (__strmode_ & __allocated) != 0 && (__strmode_ & __frozen) == 0)
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{
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if (__pfree_)
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__pfree_(eback());
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else
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delete [] eback();
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}
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streambuf::operator=(__rhs);
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__strmode_ = __rhs.__strmode_;
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__alsize_ = __rhs.__alsize_;
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__palloc_ = __rhs.__palloc_;
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__pfree_ = __rhs.__pfree_;
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__rhs.setg(nullptr, nullptr, nullptr);
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__rhs.setp(nullptr, nullptr);
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return *this;
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}
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#endif // _LIBCPP_CXX03_LANG
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class _LIBCPP_TYPE_VIS istrstream
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: public istream
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{
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public:
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_LIBCPP_INLINE_VISIBILITY
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explicit istrstream(const char* __s)
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: istream(&__sb_), __sb_(__s, 0) {}
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_LIBCPP_INLINE_VISIBILITY
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explicit istrstream(char* __s)
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: istream(&__sb_), __sb_(__s, 0) {}
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_LIBCPP_INLINE_VISIBILITY
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istrstream(const char* __s, streamsize __n)
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: istream(&__sb_), __sb_(__s, __n) {}
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_LIBCPP_INLINE_VISIBILITY
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istrstream(char* __s, streamsize __n)
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: istream(&__sb_), __sb_(__s, __n) {}
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#ifndef _LIBCPP_CXX03_LANG
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_LIBCPP_INLINE_VISIBILITY
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istrstream(istrstream&& __rhs)
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: istream(_VSTD::move(__rhs)),
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__sb_(_VSTD::move(__rhs.__sb_))
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{
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istream::set_rdbuf(&__sb_);
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}
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_LIBCPP_INLINE_VISIBILITY
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istrstream& operator=(istrstream&& __rhs)
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{
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istream::operator=(_VSTD::move(__rhs));
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__sb_ = _VSTD::move(__rhs.__sb_);
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return *this;
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}
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#endif // _LIBCPP_CXX03_LANG
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virtual ~istrstream();
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_LIBCPP_INLINE_VISIBILITY
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void swap(istrstream& __rhs)
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{
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istream::swap(__rhs);
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__sb_.swap(__rhs.__sb_);
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}
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_LIBCPP_INLINE_VISIBILITY
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strstreambuf* rdbuf() const {return const_cast<strstreambuf*>(&__sb_);}
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_LIBCPP_INLINE_VISIBILITY
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char *str() {return __sb_.str();}
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private:
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strstreambuf __sb_;
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};
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class _LIBCPP_TYPE_VIS ostrstream
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: public ostream
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{
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public:
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_LIBCPP_INLINE_VISIBILITY
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ostrstream()
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: ostream(&__sb_) {}
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_LIBCPP_INLINE_VISIBILITY
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ostrstream(char* __s, int __n, ios_base::openmode __mode = ios_base::out)
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: ostream(&__sb_),
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__sb_(__s, __n, __s + (__mode & ios::app ? strlen(__s) : 0))
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{}
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#ifndef _LIBCPP_CXX03_LANG
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_LIBCPP_INLINE_VISIBILITY
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ostrstream(ostrstream&& __rhs)
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: ostream(_VSTD::move(__rhs)),
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__sb_(_VSTD::move(__rhs.__sb_))
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{
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ostream::set_rdbuf(&__sb_);
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}
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_LIBCPP_INLINE_VISIBILITY
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ostrstream& operator=(ostrstream&& __rhs)
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{
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ostream::operator=(_VSTD::move(__rhs));
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__sb_ = _VSTD::move(__rhs.__sb_);
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return *this;
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}
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#endif // _LIBCPP_CXX03_LANG
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virtual ~ostrstream();
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_LIBCPP_INLINE_VISIBILITY
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void swap(ostrstream& __rhs)
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{
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ostream::swap(__rhs);
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__sb_.swap(__rhs.__sb_);
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}
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_LIBCPP_INLINE_VISIBILITY
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strstreambuf* rdbuf() const {return const_cast<strstreambuf*>(&__sb_);}
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_LIBCPP_INLINE_VISIBILITY
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void freeze(bool __freezefl = true) {__sb_.freeze(__freezefl);}
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_LIBCPP_INLINE_VISIBILITY
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char* str() {return __sb_.str();}
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_LIBCPP_INLINE_VISIBILITY
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int pcount() const {return __sb_.pcount();}
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private:
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strstreambuf __sb_; // exposition only
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};
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class _LIBCPP_TYPE_VIS strstream
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: public iostream
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{
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public:
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// Types
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typedef char char_type;
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typedef char_traits<char>::int_type int_type;
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typedef char_traits<char>::pos_type pos_type;
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typedef char_traits<char>::off_type off_type;
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// constructors/destructor
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_LIBCPP_INLINE_VISIBILITY
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strstream()
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: iostream(&__sb_) {}
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_LIBCPP_INLINE_VISIBILITY
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strstream(char* __s, int __n, ios_base::openmode __mode = ios_base::in | ios_base::out)
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: iostream(&__sb_),
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__sb_(__s, __n, __s + (__mode & ios::app ? strlen(__s) : 0))
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{}
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#ifndef _LIBCPP_CXX03_LANG
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_LIBCPP_INLINE_VISIBILITY
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strstream(strstream&& __rhs)
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: iostream(_VSTD::move(__rhs)),
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__sb_(_VSTD::move(__rhs.__sb_))
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{
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iostream::set_rdbuf(&__sb_);
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}
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_LIBCPP_INLINE_VISIBILITY
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strstream& operator=(strstream&& __rhs)
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{
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iostream::operator=(_VSTD::move(__rhs));
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__sb_ = _VSTD::move(__rhs.__sb_);
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return *this;
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}
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#endif // _LIBCPP_CXX03_LANG
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virtual ~strstream();
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_LIBCPP_INLINE_VISIBILITY
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void swap(strstream& __rhs)
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{
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iostream::swap(__rhs);
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__sb_.swap(__rhs.__sb_);
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}
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// Members:
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_LIBCPP_INLINE_VISIBILITY
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strstreambuf* rdbuf() const {return const_cast<strstreambuf*>(&__sb_);}
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_LIBCPP_INLINE_VISIBILITY
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void freeze(bool __freezefl = true) {__sb_.freeze(__freezefl);}
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_LIBCPP_INLINE_VISIBILITY
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int pcount() const {return __sb_.pcount();}
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_LIBCPP_INLINE_VISIBILITY
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char* str() {return __sb_.str();}
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private:
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strstreambuf __sb_; // exposition only
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};
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STRSTREAM
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