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/*
* Copyright (c) 2003-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __BASE_CPRINTF_FORMATS_HH__
#define __BASE_CPRINTF_FORMATS_HH__
#include <cstring>
#include <ostream>
#include <sstream>
namespace cp
{
struct Format
{
bool alternateForm;
bool flushLeft;
bool printSign;
bool blankSpace;
bool fillZero;
bool uppercase;
enum
{
Dec,
Hex,
Oct
} base;
enum
{
None,
String,
Integer,
Character,
Floating
} format;
enum
{
Best,
Fixed,
Scientific
} floatFormat;
int precision;
int width;
bool getPrecision;
bool getWidth;
Format() { clear(); }
void
clear()
{
alternateForm = false;
flushLeft = false;
printSign = false;
blankSpace = false;
fillZero = false;
uppercase = false;
base = Dec;
format = None;
floatFormat = Best;
precision = -1;
width = 0;
getPrecision = false;
getWidth = false;
}
};
template <typename T>
static inline void
_formatChar(std::ostream &out, const T &data, Format &fmt)
{
out << data;
}
template <typename T>
static inline void
_formatInteger(std::ostream &out, const T &data, Format &fmt)
{
std::ios::fmtflags flags(out.flags());
switch (fmt.base) {
case Format::Hex:
out.setf(std::ios::hex, std::ios::basefield);
break;
case Format::Oct:
out.setf(std::ios::oct, std::ios::basefield);
break;
case Format::Dec:
out.setf(std::ios::dec, std::ios::basefield);
break;
}
if (fmt.alternateForm) {
if (!fmt.fillZero) {
out.setf(std::ios::showbase);
} else {
switch (fmt.base) {
case Format::Hex:
out << "0x";
fmt.width -= 2;
break;
case Format::Oct:
out << "0";
fmt.width -= 1;
break;
case Format::Dec:
break;
}
}
}
if (fmt.fillZero)
out.fill('0');
if (fmt.width > 0)
out.width(fmt.width);
if (fmt.flushLeft && !fmt.fillZero)
out.setf(std::ios::left);
if (fmt.printSign)
out.setf(std::ios::showpos);
if (fmt.uppercase)
out.setf(std::ios::uppercase);
out << data;
out.flags(flags);
}
template <typename T>
static inline void
_formatFloat(std::ostream &out, const T &data, Format &fmt)
{
std::ios::fmtflags flags(out.flags());
if (fmt.fillZero)
out.fill('0');
switch (fmt.floatFormat) {
case Format::Scientific:
if (fmt.precision != -1) {
if (fmt.width > 0)
out.width(fmt.width);
if (fmt.precision == 0)
fmt.precision = 1;
else
out.setf(std::ios::scientific);
out.precision(fmt.precision);
} else if (fmt.width > 0) {
out.width(fmt.width);
}
if (fmt.uppercase)
out.setf(std::ios::uppercase);
break;
case Format::Fixed:
if (fmt.precision != -1) {
if (fmt.width > 0)
out.width(fmt.width);
out.setf(std::ios::fixed);
out.precision(fmt.precision);
} else if (fmt.width > 0) {
out.width(fmt.width);
}
break;
default:
if (fmt.precision != -1)
out.precision(fmt.precision);
if (fmt.width > 0)
out.width(fmt.width);
break;
}
out << data;
out.flags(flags);
}
template <typename T>
static inline void
_formatString(std::ostream &out, const T &data, Format &fmt)
{
if (fmt.width > 0) {
std::stringstream foo;
foo << data;
int flen = foo.str().size();
if (fmt.width > flen) {
char spaces[fmt.width - flen + 1];
std::memset(spaces, ' ', fmt.width - flen);
spaces[fmt.width - flen] = 0;
if (fmt.flushLeft)
out << foo.str() << spaces;
else
out << spaces << foo.str();
} else {
out << data;
}
} else {
out << data;
}
}
/////////////////////////////////////////////////////////////////////////////
//
// The code below controls the actual usage of formats for various types
//
//
// character formats
//
template <typename T>
static inline void
formatChar(std::ostream &out, const T &data, Format &fmt)
{
out << "<bad arg type for char format>";
}
static inline void
formatChar(std::ostream &out, char data, Format &fmt)
{
_formatChar(out, data, fmt);
}
static inline void
formatChar(std::ostream &out, unsigned char data, Format &fmt)
{
_formatChar(out, data, fmt);
}
static inline void
formatChar(std::ostream &out, signed char data, Format &fmt)
{
_formatChar(out, data, fmt);
}
static inline void
formatChar(std::ostream &out, short data, Format &fmt)
{
_formatChar(out, (char)data, fmt);
}
static inline void
formatChar(std::ostream &out, unsigned short data, Format &fmt)
{
_formatChar(out, (char)data, fmt);
}
static inline void
formatChar(std::ostream &out, int data, Format &fmt)
{
_formatChar(out, (char)data, fmt);
}
static inline void
formatChar(std::ostream &out, unsigned int data, Format &fmt)
{
_formatChar(out, (char)data, fmt);
}
static inline void
formatChar(std::ostream &out, long data, Format &fmt)
{
_formatChar(out, (char)data, fmt);
}
static inline void
formatChar(std::ostream &out, unsigned long data, Format &fmt)
{
_formatChar(out, (char)data, fmt);
}
static inline void
formatChar(std::ostream &out, long long data, Format &fmt)
{
_formatChar(out, (char)data, fmt);
}
static inline void
formatChar(std::ostream &out, unsigned long long data, Format &fmt)
{
_formatChar(out, (char)data, fmt);
}
//
// integer formats
//
template <typename T>
static inline void
formatInteger(std::ostream &out, const T &data, Format &fmt)
{
_formatInteger(out, data, fmt);
}
static inline void
formatInteger(std::ostream &out, char data, Format &fmt)
{
_formatInteger(out, (int)data, fmt);
}
static inline void
formatInteger(std::ostream &out, unsigned char data, Format &fmt)
{
_formatInteger(out, (int)data, fmt);
}
static inline void
formatInteger(std::ostream &out, signed char data, Format &fmt)
{
_formatInteger(out, (int)data, fmt);
}
static inline void
formatInteger(std::ostream &out, const unsigned char *data, Format &fmt)
{
_formatInteger(out, (uintptr_t)data, fmt);
}
static inline void
formatInteger(std::ostream &out, const signed char *data, Format &fmt)
{
_formatInteger(out, (uintptr_t)data, fmt);
}
//
// floating point formats
//
template <typename T>
static inline void
formatFloat(std::ostream &out, const T &data, Format &fmt)
{
out << "<bad arg type for float format>";
}
static inline void
formatFloat(std::ostream &out, float data, Format &fmt)
{
_formatFloat(out, data, fmt);
}
static inline void
formatFloat(std::ostream &out, double data, Format &fmt)
{
_formatFloat(out, data, fmt);
}
//
// string formats
//
template <typename T>
static inline void
formatString(std::ostream &out, const T &data, Format &fmt)
{
_formatString(out, data, fmt);
}
} // namespace cp
#endif // __CPRINTF_FORMATS_HH__