d4637757f8
base/cprintf_formats.hh:
Add additional format modifiers
--HG--
extra : convert_revision : f9ec0a664eeb96db7dacacd6b7636e3cb47555e7
346 lines
9 KiB
C++
346 lines
9 KiB
C++
/*
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* Copyright (c) 2003 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __CPRINTF_FORMATS_HH__
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#define __CPRINTF_FORMATS_HH__
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struct Format
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{
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bool alternate_form;
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bool flush_left;
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bool print_sign;
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bool blank_space;
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bool fill_zero;
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bool uppercase;
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enum { dec, hex, oct } base;
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enum { none, string, integer, character, floating } format;
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enum { best, fixed, scientific } float_format;
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int precision;
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int width;
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Format() { clear(); }
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void clear()
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{
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alternate_form = false;
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flush_left = false;
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print_sign = false;
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blank_space = false;
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fill_zero = false;
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uppercase = false;
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base = dec;
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format = none;
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precision = -1;
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width = 0;
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}
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};
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template <typename T>
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inline void
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_format_char(std::ostream &out, const T &data, Format &fmt)
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{
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using namespace std;
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out << data;
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}
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template <typename T>
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inline void
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_format_integer(std::ostream &out, const T &data, Format &fmt)
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{
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using namespace std;
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switch (fmt.base) {
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case Format::hex:
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out.setf(ios::hex, ios::basefield);
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break;
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case Format::oct:
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out.setf(ios::oct, ios::basefield);
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break;
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case Format::dec:
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out.setf(ios::dec, ios::basefield);
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break;
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}
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if (fmt.alternate_form) {
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if (!fmt.fill_zero)
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out.setf(ios::showbase);
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else {
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switch (fmt.base) {
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case Format::hex:
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out << "0x";
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fmt.width -= 2;
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break;
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case Format::oct:
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out << "0";
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fmt.width -= 1;
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break;
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case Format::dec:
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break;
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}
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}
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}
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if (fmt.fill_zero)
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out.fill('0');
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if (fmt.width > 0)
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out.width(fmt.width);
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if (fmt.flush_left && !fmt.fill_zero)
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out.setf(ios::left);
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if (fmt.print_sign)
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out.setf(ios::showpos);
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if (fmt.uppercase)
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out.setf(ios::uppercase);
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out << data;
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}
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template <typename T>
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inline void
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_format_float(std::ostream &out, const T &data, Format &fmt)
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{
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using namespace std;
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switch (fmt.float_format) {
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case Format::scientific:
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if (fmt.precision != -1) {
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if (fmt.width > 0)
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out.width(fmt.width);
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if (fmt.precision == 0)
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fmt.precision = 1;
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else
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out.setf(ios::scientific);
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out.precision(fmt.precision);
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} else
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if (fmt.width > 0)
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out.width(fmt.width);
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if (fmt.uppercase)
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out.setf(ios::uppercase);
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break;
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case Format::fixed:
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if (fmt.precision != -1) {
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if (fmt.width > 0)
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out.width(fmt.width);
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out.setf(ios::fixed);
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out.precision(fmt.precision);
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} else
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if (fmt.width > 0)
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out.width(fmt.width);
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break;
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default:
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if (fmt.precision != -1)
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out.precision(fmt.precision);
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if (fmt.width > 0)
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out.width(fmt.width);
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break;
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}
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out << data;
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}
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template <typename T>
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inline void
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_format_string(std::ostream &out, const T &data, Format &fmt)
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{
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using namespace std;
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#if defined(__GNUC__) && (__GNUC__ < 3) || 1
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if (fmt.width > 0) {
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std::stringstream foo;
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foo << data;
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int flen = foo.str().size();
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if (fmt.width > flen) {
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char *spaces = new char[fmt.width - flen + 1];
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memset(spaces, ' ', fmt.width - flen);
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spaces[fmt.width - flen] = 0;
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if (fmt.flush_left)
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out << foo.str() << spaces;
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else
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out << spaces << foo.str();
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delete [] spaces;
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} else
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out << data;
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} else
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out << data;
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#else
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if (fmt.width > 0)
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out.width(fmt.width);
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if (fmt.flush_left)
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out.setf(ios::left);
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out << data;
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#endif
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}
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/////////////////////////////////////////////////////////////////////////////
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//
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// The code below controls the actual usage of formats for various types
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//
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//
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// character formats
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//
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template <typename T>
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inline void
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format_char(std::ostream &out, const T &data, Format &fmt)
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{ out << "<bad arg type for char format>"; }
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inline void
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format_char(std::ostream &out, char data, Format &fmt)
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{ _format_char(out, data, fmt); }
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inline void
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format_char(std::ostream &out, unsigned char data, Format &fmt)
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{ _format_char(out, data, fmt); }
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inline void
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format_char(std::ostream &out, signed char data, Format &fmt)
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{ _format_char(out, data, fmt); }
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inline void
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format_char(std::ostream &out, short data, Format &fmt)
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{ _format_char(out, (char)data, fmt); }
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inline void
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format_char(std::ostream &out, unsigned short data, Format &fmt)
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{ _format_char(out, (char)data, fmt); }
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inline void
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format_char(std::ostream &out, int data, Format &fmt)
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{ _format_char(out, (char)data, fmt); }
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inline void
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format_char(std::ostream &out, unsigned int data, Format &fmt)
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{ _format_char(out, (char)data, fmt); }
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inline void
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format_char(std::ostream &out, long data, Format &fmt)
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{ _format_char(out, (char)data, fmt); }
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inline void
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format_char(std::ostream &out, unsigned long data, Format &fmt)
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{ _format_char(out, (char)data, fmt); }
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inline void
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format_char(std::ostream &out, long long data, Format &fmt)
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{ _format_char(out, (char)data, fmt); }
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inline void
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format_char(std::ostream &out, unsigned long long data, Format &fmt)
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{ _format_char(out, (char)data, fmt); }
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//
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// integer formats
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//
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template <typename T>
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inline void
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format_integer(std::ostream &out, const T &data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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inline void
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format_integer(std::ostream &out, char data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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inline void
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format_integer(std::ostream &out, unsigned char data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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inline void
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format_integer(std::ostream &out, signed char data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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#if 0
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inline void
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format_integer(std::ostream &out, short data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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inline void
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format_integer(std::ostream &out, unsigned short data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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inline void
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format_integer(std::ostream &out, int data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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inline void
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format_integer(std::ostream &out, unsigned int data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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inline void
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format_integer(std::ostream &out, long data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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inline void
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format_integer(std::ostream &out, unsigned long data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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inline void
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format_integer(std::ostream &out, long long data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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inline void
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format_integer(std::ostream &out, unsigned long long data, Format &fmt)
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{ _format_integer(out, data, fmt); }
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#endif
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//
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// floating point formats
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//
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template <typename T>
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inline void
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format_float(std::ostream &out, const T &data, Format &fmt)
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{ out << "<bad arg type for float format>"; }
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inline void
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format_float(std::ostream &out, float data, Format &fmt)
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{ _format_float(out, data, fmt); }
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inline void
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format_float(std::ostream &out, double data, Format &fmt)
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{ _format_float(out, data, fmt); }
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//
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// string formats
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//
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template <typename T>
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inline void
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format_string(std::ostream &out, const T &data, Format &fmt)
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{ _format_string(out, data, fmt); }
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inline void
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format_string(std::ostream &out, const std::stringstream &data, Format &fmt)
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{ _format_string(out, data.str(), fmt); }
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#endif // __CPRINTF_FORMATS_HH__
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