83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
// This file is part of the uSTL library, an STL implementation.
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//
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// Copyright (c) 2005 by Mike Sharov <msharov@users.sourceforge.net>
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// This file is free software, distributed under the MIT License.
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#pragma once
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#include "sostream.h"
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namespace ustl {
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class ios : public ios_base {
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public:
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/// \class align uiosfunc.h ustl.h
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/// \ingroup StreamFunctors
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/// \brief Stream functor to allow inline align() calls.
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///
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/// Example: os << ios::align(sizeof(uint16_t));
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///
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class align {
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public:
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inline explicit align (size_t grain = c_DefaultAlignment) : _grain(grain) {}
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inline istream& apply (istream& is) const { is.align (_grain); return is; }
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inline ostream& apply (ostream& os) const { os.align (_grain); return os; }
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inline void read (istream& is) const { apply (is); }
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inline void write (ostream& os) const { apply (os); }
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inline size_t stream_size (void) const { return _grain - 1; }
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private:
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const size_t _grain;
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};
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/// \class talign uiosfunc.h ustl.h
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/// \ingroup StreamFunctors
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/// \brief Stream functor to allow type-based alignment.
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template <typename T>
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class talign : public align {
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public:
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inline explicit talign (void) : align (stream_align_of (NullValue<T>())) {}
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};
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/// \class skip uiosfunc.h ustl.h
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/// \ingroup StreamFunctors
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/// \brief Stream functor to allow inline skip() calls.
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///
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/// Example: os << ios::skip(sizeof(uint16_t));
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///
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class skip {
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public:
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inline explicit skip (size_t nBytes) : _nBytes(nBytes) {}
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inline istream& apply (istream& is) const { is.skip (_nBytes); return is; }
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inline ostream& apply (ostream& os) const { os.skip (_nBytes); return os; }
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inline void read (istream& is) const { apply (is); }
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inline void write (ostream& os) const { apply (os); }
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inline size_t stream_size (void) const { return _nBytes; }
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private:
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const size_t _nBytes;
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};
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/// \class width uiosfunc.h ustl.h
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/// \ingroup StreamFunctors
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/// \brief Stream functor to allow inline set_width() calls.
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///
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/// Example: os << ios::width(15);
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///
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class width {
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public:
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inline explicit width (size_t nBytes) : _nBytes(nBytes) {}
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inline ostringstream& apply (ostringstream& os) const { os.width (_nBytes); return os; }
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inline void text_write (ostringstream& os) const { apply (os); }
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private:
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const size_t _nBytes;
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};
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// Deprecated way to set output format base. Use setiosflags manipulator instead.
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struct base {
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inline explicit base (size_t n) : _f (n == 16 ? hex : (n == 8 ? oct : dec)) {}
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inline void text_write (ostringstream& os) const { os.setf (_f, basefield); }
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private:
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fmtflags _f;
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};
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};
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} // namespace ustl
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