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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:49:04 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:49:04 +0000
commit16f504a9dca3fe3b70568f67b7d41241ae485288 (patch)
treec60f36ada0496ba928b7161059ba5ab1ab224f9d /include/iprt/nocrt/ios
parentInitial commit. (diff)
downloadvirtualbox-16f504a9dca3fe3b70568f67b7d41241ae485288.tar.xz
virtualbox-16f504a9dca3fe3b70568f67b7d41241ae485288.zip
Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/iprt/nocrt/ios')
-rw-r--r--include/iprt/nocrt/ios525
1 files changed, 525 insertions, 0 deletions
diff --git a/include/iprt/nocrt/ios b/include/iprt/nocrt/ios
new file mode 100644
index 00000000..9e49eaa9
--- /dev/null
+++ b/include/iprt/nocrt/ios
@@ -0,0 +1,525 @@
+/** @file
+ * IPRT / No-CRT - Minimal C++ ios header.
+ */
+
+/*
+ * Copyright (C) 2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+#ifndef VBOX_INCLUDED_SRC_nocrt_ios
+#define VBOX_INCLUDED_SRC_nocrt_ios
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/nocrt/iosfwd>
+#include <iprt/nocrt/string>
+
+/** @todo something for cdecl.h */
+#define RTNOCRT_IOS_ENUM_BIT_OPS(a_EnumType, a_IntType) \
+ inline a_EnumType operator~(a_EnumType a_fLeft) RT_NOEXCEPT \
+ { return a_EnumType(~static_cast<a_IntType>(a_fLeft)); } \
+ \
+ inline a_EnumType operator&(a_EnumType a_fLeft, a_EnumType a_fRight) RT_NOEXCEPT \
+ { return a_EnumType(static_cast<a_IntType>(a_fLeft) & static_cast<a_IntType>(a_fRight)); } \
+ inline a_EnumType operator|(a_EnumType a_fLeft, a_EnumType a_fRight) RT_NOEXCEPT \
+ { return a_EnumType(static_cast<a_IntType>(a_fLeft) | static_cast<a_IntType>(a_fRight)); } \
+ inline a_EnumType operator^(a_EnumType a_fLeft, a_EnumType a_fRight) RT_NOEXCEPT \
+ { return a_EnumType(static_cast<a_IntType>(a_fLeft) ^ static_cast<a_IntType>(a_fRight)); } \
+ \
+ inline const a_EnumType &operator&=(a_EnumType &a_rfLeft, a_EnumType a_fRight) RT_NOEXCEPT \
+ { return a_rfLeft = a_rfLeft & a_fRight; } \
+ inline const a_EnumType &operator|=(a_EnumType &a_rfLeft, a_EnumType a_fRight) RT_NOEXCEPT \
+ { return a_rfLeft = a_rfLeft | a_fRight; } \
+ inline const a_EnumType &operator^=(a_EnumType &a_rfLeft, a_EnumType a_fRight) RT_NOEXCEPT \
+ { return a_rfLeft = a_rfLeft ^ a_fRight; } \
+
+namespace std
+{
+ typedef ptrdiff_t streamsize;
+
+ /**
+ * I/O stream format flags.
+ */
+ class rtNoCrtIosEnums
+ {
+ public:
+ enum fmtflags
+ {
+ /* int: */
+ dec = 0x00000001,
+ oct = 0x00000002,
+ hex = 0x00000004,
+ basefield = 0x00000007,
+ /* float: */
+ scientific = 0x00000010,
+ fixed = 0x00000020,
+ floatfield = 0x00000030,
+ /* int and float output tweaks: */
+ showbase = 0x00000100,
+ showpoint = 0x00000200,
+ showpos = 0x00000400,
+ /* bool: */
+ boolalpha = 0x00000800,
+ /* adjustment: */
+ left = 0x00001000,
+ right = 0x00002000,
+ internal = 0x00004000,
+ adjustfield = 0x00007000,
+ /* misc: */
+ skipws = 0x00010000,
+ unitbuf = 0x00020000,
+ uppercase = 0x00040000,
+ };
+
+ enum seekdir
+ {
+ beg = 1,
+ end,
+ cur,
+ };
+
+ enum openmode
+ {
+ app = 1,
+ binary,
+ in,
+ out,
+ trunc,
+ ate
+ };
+
+ enum iostate
+ {
+ goodbit = 0,
+ badbit = 1,
+ failbit = 2,
+ eofbit = 4
+ };
+ };
+ RTNOCRT_IOS_ENUM_BIT_OPS(rtNoCrtIosEnums::fmtflags, int)
+ RTNOCRT_IOS_ENUM_BIT_OPS(rtNoCrtIosEnums::seekdir, int)
+ RTNOCRT_IOS_ENUM_BIT_OPS(rtNoCrtIosEnums::openmode, int)
+ RTNOCRT_IOS_ENUM_BIT_OPS(rtNoCrtIosEnums::iostate, int)
+
+
+ /**
+ * I/O stream base class.
+ */
+ class ios_base : public rtNoCrtIosEnums
+ {
+ public:
+ //typedef rtNoCrtIosFmtFlags fmtflags;
+ //typedef rtNoCrtIosSeekDir seekdir;
+ //typedef rtNoCrtIosOpenMode openmode;
+ //typedef rtNoCrtIosState iostate;
+
+ protected:
+ streamsize m_cWidth;
+ streamsize m_cPrecision;
+ fmtflags m_fFlags;
+ iostate m_fState;
+
+ protected:
+ ios_base()
+ : m_cWidth(0)
+ , m_cPrecision(0)
+ , m_fFlags(dec | skipws)
+ , m_fState(goodbit)
+ {
+ }
+ private:
+ ios_base(const ios_base &); /* not copyable */
+ ios_base &operator=(const ios_base &); /* not copyable */
+
+ public:
+ virtual ~ios_base()
+ {
+ }
+
+ streamsize width() const RT_NOEXCEPT
+ {
+ return m_cWidth;
+ }
+
+ streamsize width(streamsize a_cWidth) RT_NOEXCEPT
+ {
+ streamsize cOldWidth = m_cWidth;
+ m_cWidth = a_cWidth;
+ return cOldWidth;
+ }
+
+ streamsize precision() const RT_NOEXCEPT
+ {
+ return m_cPrecision;
+ }
+
+ streamsize precision(streamsize a_cPrecision) RT_NOEXCEPT
+ {
+ streamsize cOldPrecision = m_cPrecision;
+ m_cPrecision = a_cPrecision;
+ return cOldPrecision;
+ }
+
+ fmtflags flags() const RT_NOEXCEPT
+ {
+ return m_fFlags;
+ }
+
+ fmtflags flags(fmtflags a_fNew) RT_NOEXCEPT
+ {
+ fmtflags const fOld = m_fFlags;
+ m_fFlags = a_fNew;
+ return fOld;
+ }
+
+ fmtflags setf(fmtflags a_fAdd) RT_NOEXCEPT
+ {
+ fmtflags const fOld = m_fFlags;
+ m_fFlags = static_cast<fmtflags>(fOld | a_fAdd);
+ return fOld;
+ }
+
+ fmtflags setf(fmtflags a_fAdd, fmtflags a_fMask) RT_NOEXCEPT
+ {
+ fmtflags const fOld = m_fFlags;
+ m_fFlags = static_cast<fmtflags>((fOld & ~a_fMask) | (a_fAdd & a_fMask));
+ return fOld;
+ }
+
+ void unsetf(fmtflags a_fClear) RT_NOEXCEPT
+ {
+ m_fFlags = static_cast<fmtflags>(m_fFlags & ~a_fClear);
+ }
+ };
+
+
+ /**
+ * Stream buffer.
+ */
+ template<typename a_CharType, typename a_CharTraits /*= std::char_traits<a_CharType>*/ >
+ class basic_streambuf
+ {
+ public:
+ typedef a_CharType char_type;
+ typedef a_CharTraits traits_type;
+ typedef typename a_CharTraits::int_type int_type;
+ typedef typename a_CharTraits::pos_type pos_type;
+ typedef typename a_CharTraits::off_type off_type;
+
+ protected:
+ /** @name Put buffering
+ * @{ */
+ char_type *m_pachPut; /**< The put buffer pointer. */
+ std::size_t m_cchPut; /**< Put buffer size. */
+ std::size_t m_offPutNext; /**< The current put buffer position (where to write next). */
+ std::size_t m_offPutStart; /**< Where the buffered put sequence starts. */
+
+ void setp(char_type *a_pachNewBuf, char_type *a_pachNewBufEnd)
+ {
+ Assert((uintptr_t)a_pachNewBuf <= (uintptr_t)a_pachNewBufEnd);
+ m_pachPut = a_pachNewBuf;
+ m_cchPut = static_cast<std::size_t>(a_pachNewBufEnd - a_pachNewBuf);
+ m_offPutNext = 0;
+ m_offPutStart = 0;
+ }
+
+ char_type *pbbase() const RT_NOEXCEPT
+ {
+ Assert(m_offPutNext >= m_offPutStart); Assert(m_offPutNext <= m_cchPut); Assert(m_offPutStart <= m_cchPut);
+ return &m_pachPut[m_offPutStart];
+ }
+
+ char_type *pptr() const RT_NOEXCEPT
+ {
+ Assert(m_offPutNext <= m_cchPut);
+ return &m_pachPut[m_offPutNext];
+ }
+
+ char_type *epptr() const RT_NOEXCEPT
+ {
+ return &m_pachBuf[m_cchPut];
+ }
+
+ void pbump(int a_cchAdvance) const RT_NOEXCEPT
+ {
+ Assert(m_offPutNext <= m_cchPut);
+ m_offPutNext += a_cchAdvance;
+ Assert(m_offPutNext <= m_cchPut);
+ }
+ /** @} */
+
+ protected:
+ basic_streambuf() RT_NOEXCEPT
+ : m_pachPut(NULL)
+ , m_cchPut(0)
+ , m_offPutNext(0)
+ , m_offPutStart(0)
+ {
+ }
+
+ basic_streambuf(const basic_streambuf &a_rSrc) RT_NOEXCEPT
+ : m_pachPut(a_rSrc.m_pachPut)
+ , m_cchPut(a_rSrc.m_cchPut)
+ , m_offPutNext(a_rSrc.m_offPutNext)
+ , m_offPutStart(a_rSrc.m_offPutStart)
+ {
+ }
+
+ public:
+ virtual ~basic_streambuf()
+ {
+ }
+
+ /** @name Positioning
+ * @{ */
+ protected:
+ virtual basic_streambuf *setbuf(char_type *a_pchBuf, std::streamsize a_cchBuf)
+ {
+ RT_NOREF(a_pchBuf, a_cchBuf);
+ return this;
+ }
+ public:
+ basic_streambuf *pubsetbuf(char_type *a_pchBuf, std::streamsize a_cchBuf)
+ {
+ return setbuf(a_pchBuf, a_cchBuf);
+ }
+
+ protected:
+ virtual pos_type seekoff(off_type a_off, std::ios_base::seekdir a_enmDir,
+ std::ios_base::openmode a_enmTarget = ios_base::in | ios_base::out)
+ {
+ RT_NOREF(a_off, a_enmDir, a_enmTarget);
+ return pos_type(off_type(-1));
+ }
+ public:
+ pos_type pubseekoff(off_type a_off, std::ios_base::seekdir a_enmDir,
+ std::ios_base::openmode a_enmTarget = ios_base::in | ios_base::out)
+ {
+ return seekoff(a_off, a_enmDir, a_enmTarget);
+ }
+
+ protected:
+ virtual pos_type seekpos(pos_type a_pos, std::ios_base::openmode a_enmTarget = ios_base::in | ios_base::out)
+ {
+ RT_NOREF(a_pos, a_enmTarget);
+ return pos_type(off_type(-1));
+ }
+ public:
+ pos_type pubseekpos(pos_type a_pos, std::ios_base::openmode a_enmTarget = ios_base::in | ios_base::out)
+ {
+ return seekpos(a_pos, a_enmTarget);
+ }
+
+ protected:
+ virtual int sync()
+ {
+ return 0;
+ }
+ public:
+ pos_type pubsync()
+ {
+ return sync();
+ }
+ /** @} */
+
+ /** @name Output
+ * @{ */
+ protected:
+ virtual int_type overflow(int_type a_iChar)
+ {
+ RT_NOREF(a_iChar);
+ return traits_type::eof();
+ }
+
+ virtual std::streamsize xsputn(char_type const *a_pchSrc, std::streamsize a_cchSrc)
+ {
+ std::streamsize cchWritten = 0;
+ while (a_cchSrc > 0)
+ {
+ std::size_t cchCopied = m_cchPut - m_offPutNext;
+ if (cchCopied > 0)
+ {
+ cchCopied = RT_MIN(cchCopied, static_cast<std::size_t>(a_cchSrc));
+ traits_type::copy(&m_pachPut[m_offPutNext], a_pchSrc, cchCopied);
+ m_cchPut += cchCopied;
+ }
+ else
+ {
+ if (overflow(traits_type::to_int_type(m_pachPut[m_offPutNext])) != traits_type::eof())
+ cchCopied = 1;
+ else
+ break;
+ }
+ a_pchSrc += cchCopied;
+ a_cchSrc -= cchCopied;
+ }
+ return cchWritten;
+ }
+
+ public:
+ int_type sputc(char_type a_ch)
+ {
+ if (m_offPutNext < m_cchPut)
+ {
+ m_pachPut[m_offPutNext++] = a_ch;
+ return traits_type::to_int_type(a_ch);
+ }
+ return overflow(traits_type::to_int_type(a_ch));
+ }
+
+ std::streamsize sputn(char_type const *a_pchSrc, std::streamsize a_cchSrc)
+ {
+ AssertReturn(a_cchSrc >= 0, 0);
+ return xsputn(a_pchSrc, a_cchSrc);
+ }
+
+ /** @} */
+
+ /** @todo add the remaining members... */
+ };
+
+
+ /**
+ * Basic I/O stream.
+ */
+ template<typename a_CharType, typename a_CharTraits /*= std::char_traits<a_CharType>*/ >
+ class basic_ios : public ios_base
+ {
+ public:
+ typedef a_CharType char_type;
+ typedef a_CharTraits traits_type;
+ typedef typename a_CharTraits::int_type int_type;
+ typedef typename a_CharTraits::pos_type pos_type;
+ typedef typename a_CharTraits::off_type off_type;
+
+ protected:
+ basic_streambuf<a_CharType, a_CharTraits> *m_pBuf;
+ basic_ostream<a_CharType, a_CharTraits> *m_pTiedStream;
+
+ protected:
+ void init(std::basic_streambuf<a_CharType, a_CharTraits> *a_pBuf)
+ {
+ m_pBuf = a_pBuf;
+ m_cWidth = 0;
+ m_cPrecision = 6;
+ m_fFlags = ios_base::dec | ios_base::skipws;
+ m_fState = ios_base::goodbit;
+ }
+
+ public:
+ basic_ios()
+ : ios_base()
+ , m_pBuf(NULL)
+ , m_pTiedStream(NULL)
+ {
+ }
+
+ basic_ios(std::basic_streambuf<a_CharType, a_CharTraits> *a_pBuf)
+ : ios_base()
+ , m_pBuf(NULL)
+ , m_pTiedStream(NULL)
+ {
+ init(a_pBuf);
+ }
+ private:
+ basic_ios(const basic_ios &a_rSrc); /* not copyable */
+ basic_ios &operator=(const basic_ios &a_rSrc); /* not copyable */
+
+ public:
+ virtual ~basic_ios()
+ {
+ }
+
+ /** @name State methods
+ * @{ */
+ bool good() const RT_NOEXCEPT { return m_fState == ios_base::goodbit; }
+ bool fail() const RT_NOEXCEPT { return (m_fState & (ios_base::failbit | ios_base::badbit)) != ios_base::goodbit; }
+ bool bad() const RT_NOEXCEPT { return (m_fState & ios_base::badbit) == ios_base::badbit; }
+ bool eof() const RT_NOEXCEPT { return (m_fState & ios_base::eofbit) != ios_base::eofbit; }
+#if RT_CPLUSPLUS_PREREQ(201100)
+ operator bool() const RT_NOEXCEPT { return good(); }
+#else
+ operator void*() const RT_NOEXCEPT { return good() ? NULL : this; }
+#endif
+ bool operator!() const RT_NOEXCEPT { return fail(); }
+
+ iostate rdstate() const RT_NOEXCEPT
+ {
+ return m_fState;
+ }
+
+ void clear(iostate a_fNewState = goodbit)
+ {
+ m_fState = a_fNewState;
+ if (!m_pBuf)
+ m_fState |= badbit;
+ /** @todo failure exception */
+ }
+
+ void setstate(iostate a_fNewState)
+ {
+ clear(m_fState | a_fNewState);
+ }
+ /** @} */
+
+ /** @name Misc
+ * @{ */
+ std::basic_streambuf<a_CharType, a_CharTraits> *rdbuf() const RT_NOEXCEPT
+ {
+ return m_pBuf;
+ }
+
+ std::basic_streambuf<a_CharType, a_CharTraits> *rdbuf(std::basic_streambuf<a_CharType, a_CharTraits> *a_pNewbuf) RT_NOEXCEPT
+ {
+ std::basic_streambuf<a_CharType, a_CharTraits> *pOldBuf = m_pBuf;
+ m_pBuf = a_pNewBuf;
+ return pOldBuf;
+ }
+
+ std::basic_ostream<a_CharType, a_CharTraits> *tie() const
+ {
+ return m_pTiedStream;
+ }
+
+ std::basic_ostream<a_CharType, a_CharTraits> tie(std::basic_ostream<a_CharType, a_CharTraits> *a_pNew) const RT_NOEXCEPT
+ {
+ std::basic_ostream<a_CharType, a_CharTraits> * const pOld = m_pTiedStream;
+ m_pTiedStream = a_pNew;
+ return pOld;
+ }
+ /** @} */
+
+ /** @todo implement the rest... */
+ };
+}
+
+#endif /* !VBOX_INCLUDED_SRC_nocrt_ios */
+