1 // This file is part of the ustl library, an STL implementation. 2 // 3 // Copyright (C) 2005 by Mike Sharov <msharov (at) users.sourceforge.net> 4 // This file is free software, distributed under the MIT License. 5 // 6 // uios.h 7 // 8 // Types used by the streams for option setting. 9 // 10 11 #ifndef UIOS_H_630C16E316F7650E3A02E1C6611B789A 12 #define UIOS_H_630C16E316F7650E3A02E1C6611B789A 13 14 #include "utypes.h" 15 16 namespace ustl { 17 18 class file_exception; 19 20 const char endl = '\n'; ///< End of line character. 21 const char ends = '\0'; ///< End of string character. 22 23 /// Defines types and constants used by all stream classes. 24 class ios_base { 25 public: 26 /// Used to set parameters for stringstreams 27 enum fmtflags { 28 boolalpha = (1 << 0), ///< Boolean values printed as text. 29 dec = (1 << 1), ///< Decimal number output. 30 fixed = (1 << 2), ///< Fixed-point float output. 31 hex = (1 << 3), ///< Hexadecimal number output. 32 internal = (1 << 4), 33 left = (1 << 5), ///< Left alignment. 34 oct = (1 << 6), ///< Octal number output. 35 right = (1 << 7), ///< Right alignment. 36 scientific = (1 << 8), ///< Scientific float format. 37 showbase = (1 << 9), ///< Add 0x or 0 prefixes on hex and octal numbers. 38 showpoint = (1 << 10), ///< Print decimal point. 39 showpos = (1 << 11), 40 skipws = (1 << 12), ///< Skip whitespace when reading. 41 unitbuf = (1 << 13), 42 uppercase = (1 << 14), 43 adjustfield = (1 << 15), 44 basefield = (1 << 16), 45 floatfield = (1 << 17) 46 }; 47 /// For file-based streams, specifies fd mode. 48 enum openmode_bits { 49 in = (1 << 0), 50 out = (1 << 1), 51 app = (1 << 2), 52 ate = (1 << 3), 53 binary = (1 << 4), 54 trunc = (1 << 5), 55 #ifndef DOXYGEN_SHOULD_SKIP_THIS 56 nonblock= (1 << 6), 57 nocreate= (1 << 7), 58 noctty = (1 << 8), 59 nombits = 9 60 #endif 61 }; 62 /// Seek directions, equivalent to SEEK_SET, SEEK_CUR, and SEEK_END. 63 enum seekdir { 64 beg, 65 cur, 66 end 67 }; 68 /// I/O state bitmasks. 69 enum iostate_bits { 70 goodbit = 0, 71 badbit = (1 << 0), 72 eofbit = (1 << 1), 73 failbit = (1 << 2), 74 #ifndef DOXYGEN_SHOULD_SKIP_THIS 75 nbadbits = 3, 76 allbadbits = 0x7 77 #endif 78 }; 79 80 typedef uint32_t openmode; ///< Holds openmode_bits. 81 typedef uint32_t iostate; ///< Holds iostate_bits for a file stream. 82 typedef file_exception failure; ///< Thrown by fstream on errors. 83 84 static const char c_DefaultDelimiters [16]; ///< Default word delimiters for stringstreams. 85 public: 86 inline ios_base (void) : m_State (goodbit), m_Exceptions (goodbit) {} 87 inline iostate rdstate (void) const { return (m_State); } 88 inline bool bad (void) const { return (rdstate() & badbit); } 89 inline bool good (void) const { return (rdstate() == goodbit); } 90 inline bool fail (void) const { return (rdstate() & (badbit | failbit)); } 91 inline bool eof (void) const { return (rdstate() & eofbit); } 92 inline bool operator! (void) const { return (fail()); } 93 inline void clear (iostate v = goodbit) { m_State = v; } 94 inline void setstate (iostate v) { m_State |= v; } 95 inline iostate exceptions (void) const { return (m_Exceptions); } 96 inline iostate exceptions (iostate v) { return (m_Exceptions = v); } 97 protected: 98 inline bool set_and_throw (iostate v) { setstate(v); return (exceptions() & v); } 99 private: 100 uint16_t m_State; ///< Open state, using ios::iostate_bits. 101 uint16_t m_Exceptions; ///< Exception flags, using ios::iostate_bits. 102 }; 103 104 } // namespace ustl 105 106 #endif 107 108
