Danny Robson
8cc4c1e82a
requires literal string arrays, and implements more of the specifier specification. does not implement 'n' or '$' specifiers. falls back to snprintf for real arguments.
77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2016 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_FORMAT_HPP
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#define __UTIL_FORMAT_HPP
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#include <stdexcept>
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#include <string>
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namespace util { namespace format {
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//-------------------------------------------------------------------------
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// render a format string using the provided values.
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//
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// we deliberately only take char[] formats so as to promote the use of
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// only literal strings as format strings.
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template <typename ...Args, size_t N>
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std::string
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render (const char (&fmt)[N], const Args&...);
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//-------------------------------------------------------------------------
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class error : public std::runtime_error
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{ using runtime_error::runtime_error; };
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// value-specifier mismatch
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class value_error : public error
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{ using error::error; };
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struct conversion_error : public error
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{ using error::error; };
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struct length_error : public error
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{ using error::error; };
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// malformed format specifier
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class syntax_error : public error
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{ using error::error; };
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template <typename ValueT>
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class invalid_specifier : error {
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public:
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using value_type = ValueT;
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invalid_specifier (char specifier);
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char specifier (void) const;
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private:
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char m_specifier;
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};
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// missing format specifier
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class missing_error : public error
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{
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public:
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missing_error ():
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error ("missing argument for specifier")
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{ ; }
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};
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} }
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#include "format.ipp"
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#endif
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