100 lines
3.4 KiB
C++
100 lines
3.4 KiB
C++
// This file is part of the uSTL library, an STL implementation.
|
|
//
|
|
// Copyright (c) 2005 by Mike Sharov <msharov@users.sourceforge.net>
|
|
// This file is free software, distributed under the MIT License.
|
|
|
|
#pragma once
|
|
#include "utypes.h"
|
|
|
|
namespace ustl {
|
|
|
|
class file_exception;
|
|
|
|
/// Defines types and constants used by all stream classes.
|
|
class ios_base {
|
|
public:
|
|
/// Used to set parameters for stringstreams
|
|
enum fmtflags_bits {
|
|
boolalpha = (1 << 0), ///< Boolean values printed as text.
|
|
showbase = (1 << 1), ///< Add 0x or 0 prefixes on hex and octal numbers.
|
|
showpoint = (1 << 2), ///< Print decimal point.
|
|
showpos = (1 << 3),
|
|
skipws = (1 << 4), ///< Skip whitespace when reading.
|
|
unitbuf = (1 << 5),
|
|
uppercase = (1 << 6),
|
|
dec = (1 << 7), ///< Decimal number output.
|
|
oct = (1 << 8), ///< Octal number output.
|
|
hex = (1 << 9), ///< Hexadecimal number output.
|
|
fixed = (1 << 10), ///< Fixed-point float output.
|
|
scientific = (1 << 11), ///< Scientific float format.
|
|
left = (1 << 12), ///< Left alignment.
|
|
right = (1 << 13), ///< Right alignment.
|
|
internal = (1 << 14),
|
|
basefield = dec| oct| hex,
|
|
floatfield = fixed| scientific,
|
|
adjustfield = left| right| internal
|
|
};
|
|
/// For file-based streams, specifies fd mode.
|
|
enum openmode_bits {
|
|
in = (1 << 0),
|
|
out = (1 << 1),
|
|
app = (1 << 2),
|
|
ate = (1 << 3),
|
|
binary = (1 << 4),
|
|
trunc = (1 << 5),
|
|
#ifndef DOXYGEN_SHOULD_SKIP_THIS
|
|
nonblock= (1 << 6),
|
|
nocreate= (1 << 7),
|
|
noctty = (1 << 8),
|
|
nombits = 9
|
|
#endif
|
|
};
|
|
/// Seek directions, equivalent to SEEK_SET, SEEK_CUR, and SEEK_END.
|
|
enum seekdir {
|
|
beg,
|
|
cur,
|
|
end
|
|
};
|
|
/// I/O state bitmasks.
|
|
enum iostate_bits {
|
|
goodbit = 0,
|
|
badbit = (1 << 0),
|
|
eofbit = (1 << 1),
|
|
failbit = (1 << 2),
|
|
#ifndef DOXYGEN_SHOULD_SKIP_THIS
|
|
nbadbits = 3,
|
|
allbadbits = 0x7
|
|
#endif
|
|
};
|
|
|
|
enum { default_stream_buffer_size = 4095 };
|
|
|
|
typedef uint32_t openmode; ///< Holds openmode_bits.
|
|
struct fmtflags{ fmtflags(const uint32_t& flags) : f(flags){}; fmtflags() = default; uint32_t f; }; ///< Holds fmtflags_bits for a string stream.
|
|
typedef uint32_t iostate; ///< Holds iostate_bits for a file stream.
|
|
typedef file_exception failure; ///< Thrown by fstream on errors.
|
|
|
|
static const char c_DefaultDelimiters [16]; ///< Default word delimiters for stringstreams.
|
|
public:
|
|
inline ios_base (void) : _state (goodbit), _exceptions (allbadbits) {}
|
|
inline iostate rdstate (void) const { return _state; }
|
|
inline bool bad (void) const { return rdstate() & badbit; }
|
|
inline bool good (void) const { return rdstate() == goodbit; }
|
|
inline bool fail (void) const { return rdstate() & (badbit | failbit); }
|
|
inline bool eof (void) const { return rdstate() & eofbit; }
|
|
inline bool operator! (void) const { return fail(); }
|
|
inline operator bool (void) const { return !fail(); }
|
|
inline void clear (iostate v = goodbit) { _state = v; }
|
|
inline void setstate (iostate v) { _state |= v; }
|
|
inline iostate exceptions (void) const { return _exceptions; }
|
|
inline iostate exceptions (iostate v) { return _exceptions = v; }
|
|
protected:
|
|
inline bool set_and_throw (iostate v) { setstate(v); return exceptions() & v; }
|
|
void overrun (const char* op, const char* type, uint32_t n, uint32_t p, uint32_t rem);
|
|
private:
|
|
uint16_t _state; ///< Open state, using ios::iostate_bits.
|
|
uint16_t _exceptions; ///< Exception flags, using ios::iostate_bits.
|
|
};
|
|
|
|
} // namespace ustl
|