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227 lines
8.3 KiB
227 lines
8.3 KiB
/*==LICENSE==* |
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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Additional permissions under GNU GPL version 3 section 7 |
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If you modify this Program, or any covered work, by linking or |
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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK, |
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NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent |
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK |
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(or a modified version of those libraries), |
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containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA, |
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PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG |
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JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the |
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licensors of this Program grant you additional |
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permission to convey the resulting work. Corresponding Source for a |
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non-source form of such a combination shall include the source code for |
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the parts of OpenSSL and IJG JPEG Library used as well as that of the covered |
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work. |
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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or by snail mail at: |
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Cyan Worlds, Inc. |
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14617 N Newport Hwy |
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Mead, WA 99021 |
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*==LICENSE==*/ |
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#ifndef plFormat_Defined |
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#define plFormat_Defined |
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#include "plString.h" |
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#include <list> |
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#include <string> |
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#ifdef BUILDING_DOXYGEN // Doxygen doesn't appear to support variadic templates yet |
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/** Format a string using type-safe arguments |
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* \param format The format string -- see below for details |
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* |
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* Character Sequence | Description |
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* ------------------ | ----------- |
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* `{}` | Format a value (using defaults) |
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* `{{` | Escape for a single '{' char |
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* `{options}` | Format a value, with the specified options (see below) |
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* |
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* Formatting Options |
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* ------------------ |
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* |
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* Format Option | Description |
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* ------------- | ----------- |
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* `<` | Align left |
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* `>` | Align right |
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* `NNN` | Pad to NNN characters (minimum - can be more) |
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* `+` | Show a '+' char for positive signed values (decimal only) |
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* `_C` | Use C as the pad character (only '\001'..'\177' supported for now) |
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* `x` | Hex (lower-case) |
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* `X` | Hex (upper-case) |
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* `o` | Octal |
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* `b` | Binary |
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* `d` | Decimal (default) -- when used with char types, outputs a number instead of the UTF representation of the char |
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* `c` | UTF character (default for character types) |
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* `FFF.EEE` | Use FFF.EEE floating point precision |
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* `f` | Fixed floating point format (ddd.ddd) |
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* `e` | Exponent notation for floating point (d.ddde[+/-]dd) |
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* `E` | Same as 'e' format, but with upper case E (d.dddE[+/-]dd) |
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*/ |
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plString plFormat(const char *format, ...); |
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#endif |
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namespace plFormat_Private |
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{ |
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enum Alignment : unsigned char |
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{ |
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kAlignDefault, /**< Left for strings, right for numbers */ |
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kAlignLeft, /**< Left alignment */ |
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kAlignRight /**< Right alignment */ |
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}; |
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enum DigitClass : unsigned char |
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{ |
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kDigitDefault, /**< Default digit formatting */ |
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kDigitDec, /**< Format as decimal integer */ |
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kDigitDecAlwaysSigned, /**< Same as `kDigitDec`, but include a '+' for positive numbers too */ |
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kDigitHex, /**< Hex integer (assume unsigned) */ |
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kDigitHexUpper, /**< Hex integer with upper-case digits */ |
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kDigitOct, /**< Octal integer (assume unsigned) */ |
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kDigitBin, /**< Binary integer (assume unsigned) */ |
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kDigitChar /**< Single unicode character (as UTF-8) */ |
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}; |
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enum FloatClass : unsigned char |
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{ |
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kFloatDefault, /**< Use Fixed or Exp format depending on value */ |
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kFloatFixed, /**< Use Fixed notation (ddd.ddd) */ |
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kFloatExp, /**< Use Exp notation (d.ddde[+/-]dd) */ |
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kFloatExpUpper /**< Same as `kFloatExp`, but with an upper-case E */ |
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}; |
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/** Represents a parsed format tag, for use in formatter implementations. */ |
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struct FormatSpec |
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{ |
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int fPrecisionLeft = 0; /**< Requested padding and/or precision */ |
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int fPrecisionRight = 0; /**< Requested precision after the . for floating-point */ |
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char fPadChar = 0; /**< Explicit padding char (default is space) */ |
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Alignment fAlignment = kAlignDefault; /**< Requested pad alignment */ |
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DigitClass fDigitClass = kDigitDefault; /**< Requested int formatting */ |
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FloatClass fFloatClass = kFloatDefault; /**< Requested float formatting */ |
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}; |
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// These need to be publically visible for the macros below, but shouldn't |
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// be used directly outside of plFormat and its macros |
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struct _IFormatDataObject |
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{ |
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const char *fFormatStr; |
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std::list<plStringBuffer<char>> fOutput; |
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}; |
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extern FormatSpec _FetchNextFormat(_IFormatDataObject &data); |
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} |
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/** Declare a formattable type for `plFormat`. |
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* \sa PL_FORMAT_IMPL() |
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*/ |
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#define PL_FORMAT_TYPE(_type) \ |
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extern plStringBuffer<char> _impl_plFormat_DataHandler( \ |
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const plFormat_Private::FormatSpec &format, _type value); \ |
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namespace plFormat_Private \ |
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{ \ |
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template <typename... _Args> \ |
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plString _IFormat(_IFormatDataObject &data, _type value, _Args... args) \ |
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{ \ |
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plFormat_Private::FormatSpec format = plFormat_Private::_FetchNextFormat(data); \ |
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data.fOutput.push_back(_impl_plFormat_DataHandler(format, value)); \ |
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return _IFormat(data, args...); \ |
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} \ |
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} \ |
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template <typename... _Args> \ |
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plString plFormat(const char *fmt_str, _type value, _Args... args) \ |
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{ \ |
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plFormat_Private::_IFormatDataObject data; \ |
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data.fFormatStr = fmt_str; \ |
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plFormat_Private::FormatSpec format = plFormat_Private::_FetchNextFormat(data); \ |
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data.fOutput.push_back(_impl_plFormat_DataHandler(format, value)); \ |
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return plFormat_Private::_IFormat(data, args...); \ |
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} |
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/** Provide the implementation for a formattable type for `plFormat`. |
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* \sa PL_FORMAT_TYPE(), PL_FORMAT_FORWARD() |
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* |
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* Example: |
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* |
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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* PL_FORMAT_IMPL(const MyType &) |
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* { |
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* return plFormat("MyType[data={},count={}]", value.data, value.count); |
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* } |
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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*/ |
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#define PL_FORMAT_IMPL(_type) \ |
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plStringBuffer<char> _impl_plFormat_DataHandler( \ |
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const plFormat_Private::FormatSpec &format, _type value) |
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/** Shortcut to call another `PL_FORMAT_IMPL` formatter. |
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* \sa PL_FORMAT_IMPL() |
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* |
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* Example: |
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* |
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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* PL_FORMAT_IMPL(const MyType &) |
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* { |
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* return PL_FORMAT_FORWARD(format, value.ToString()); |
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* } |
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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*/ |
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#define PL_FORMAT_FORWARD(format, fwd_value) \ |
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_impl_plFormat_DataHandler((format), (fwd_value)) |
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PL_FORMAT_TYPE(char) |
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PL_FORMAT_TYPE(wchar_t) |
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PL_FORMAT_TYPE(signed char) |
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PL_FORMAT_TYPE(unsigned char) |
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PL_FORMAT_TYPE(short) |
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PL_FORMAT_TYPE(unsigned short) |
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PL_FORMAT_TYPE(int) |
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PL_FORMAT_TYPE(unsigned) |
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PL_FORMAT_TYPE(long) |
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PL_FORMAT_TYPE(unsigned long) |
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PL_FORMAT_TYPE(int64_t) |
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PL_FORMAT_TYPE(uint64_t) |
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PL_FORMAT_TYPE(const char *) |
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PL_FORMAT_TYPE(const wchar_t *) |
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PL_FORMAT_TYPE(const plString &) |
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// TODO: Remove these when they're no longer needed |
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PL_FORMAT_TYPE(const std::string &) |
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PL_FORMAT_TYPE(const std::wstring &) |
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// TODO: Implement floating point types (float, double). They're harder |
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// than the others, so I'll get around to them later >.> |
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// Formats as "true" or "false", following normal string formatting rules. |
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// To use other formats, don't pass us a bool directly... |
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PL_FORMAT_TYPE(bool) |
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namespace plFormat_Private |
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{ |
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// End of the chain -- emits the last piece (if any) and builds the final string |
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plString _IFormat(_IFormatDataObject &data); |
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} |
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#endif // plFormat_Defined
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