diff options
Diffstat (limited to 'boost')
| -rw-r--r-- | boost/format.hpp | 68 | ||||
| -rw-r--r-- | boost/format/exceptions.hpp | 96 | ||||
| -rw-r--r-- | boost/format/feed_args.hpp | 248 | ||||
| -rw-r--r-- | boost/format/format_class.hpp | 140 | ||||
| -rw-r--r-- | boost/format/format_fwd.hpp | 55 | ||||
| -rw-r--r-- | boost/format/format_implementation.hpp | 268 | ||||
| -rw-r--r-- | boost/format/free_funcs.hpp | 72 | ||||
| -rw-r--r-- | boost/format/group.hpp | 680 | ||||
| -rw-r--r-- | boost/format/internals.hpp | 169 | ||||
| -rw-r--r-- | boost/format/internals_fwd.hpp | 65 | ||||
| -rw-r--r-- | boost/format/macros_default.hpp | 48 | ||||
| -rw-r--r-- | boost/format/parsing.hpp | 457 |
12 files changed, 2366 insertions, 0 deletions
diff --git a/boost/format.hpp b/boost/format.hpp new file mode 100644 index 000000000000..f5bdada050d0 --- /dev/null +++ b/boost/format.hpp @@ -0,0 +1,68 @@ +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream + +// ---------------------------------------------------------------------------- +// format.hpp : primary header +// ---------------------------------------------------------------------------- + +#ifndef BOOST_FORMAT_HPP +#define BOOST_FORMAT_HPP + +#include <vector> +#include <string> +#include <sstream> +#include <cassert> + +#include <locale> + +#include <boost/format/macros_default.hpp> + +namespace boost +{ + template<class E> void throw_exception(E const & e) + { + throw e; + } +} + +#define BOOST_ASSERT(expr) assert(expr) + + +// **** Forward declarations ---------------------------------- +#include <boost/format/format_fwd.hpp> // basic_format<Ch,Tr>, and other frontends +#include <boost/format/internals_fwd.hpp> // misc forward declarations for internal use + + +// **** Auxiliary structs (stream_format_state<Ch,Tr> , and format_item<Ch,Tr> ) +#include <boost/format/internals.hpp> + +// **** Format class interface -------------------------------- +#include <boost/format/format_class.hpp> + +// **** Exceptions ----------------------------------------------- +#include <boost/format/exceptions.hpp> + +// **** Implementation ------------------------------------------- +#include <boost/format/format_implementation.hpp> // member functions + +#include <boost/format/group.hpp> // class for grouping arguments + +#include <boost/format/feed_args.hpp> // argument-feeding functions +#include <boost/format/parsing.hpp> // format-string parsing (member-)functions + +// **** Implementation of the free functions ---------------------- +#include <boost/format/free_funcs.hpp> + + +#endif // BOOST_FORMAT_HPP diff --git a/boost/format/exceptions.hpp b/boost/format/exceptions.hpp new file mode 100644 index 000000000000..79e452449ef8 --- /dev/null +++ b/boost/format/exceptions.hpp @@ -0,0 +1,96 @@ +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream (also took its parsing code as basis for printf parsing) + +// ------------------------------------------------------------------------------ +// exceptions.hpp +// ------------------------------------------------------------------------------ + + +#ifndef BOOST_FORMAT_EXCEPTIONS_HPP +#define BOOST_FORMAT_EXCEPTIONS_HPP + + +#include <stdexcept> + + +namespace boost { + +namespace io { + +// **** exceptions ----------------------------------------------- + +class format_error : public std::exception +{ +public: + format_error() {} + virtual const char *what() const throw() + { + return "boost::format_error: " + "format generic failure"; + } +}; + +class bad_format_string : public format_error +{ +public: + bad_format_string() {} + virtual const char *what() const throw() + { + return "boost::bad_format_string: " + "format-string is ill-formed"; + } +}; + +class too_few_args : public format_error +{ +public: + too_few_args() {} + virtual const char *what() const throw() + { + return "boost::too_few_args: " + "format-string refered to more arguments than were passed"; + } +}; + +class too_many_args : public format_error +{ +public: + too_many_args() {} + virtual const char *what() const throw() + { + return "boost::too_many_args: " + "format-string refered to less arguments than were passed"; + } +}; + + +class out_of_range : public format_error +{ +public: + out_of_range() {} + virtual const char *what() const throw() + { + return "boost::out_of_range: " + "tried to refer to an argument (or item) number which is out of range, " + "according to the format string."; + } +}; + + +} // namespace io + +} // namespace boost + + +#endif // BOOST_FORMAT_EXCEPTIONS_HPP diff --git a/boost/format/feed_args.hpp b/boost/format/feed_args.hpp new file mode 100644 index 000000000000..2e678ca3b4b0 --- /dev/null +++ b/boost/format/feed_args.hpp @@ -0,0 +1,248 @@ +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream + +// ---------------------------------------------------------------------------- +// feed_args.hpp : functions for processing each argument +// (feed, feed_manip, and distribute) +// ---------------------------------------------------------------------------- + + +#ifndef BOOST_FORMAT_FEED_ARGS_HPP +#define BOOST_FORMAT_FEED_ARGS_HPP + +#include "boost/format/format_class.hpp" +#include "boost/format/group.hpp" + +//#include "boost/throw_exception.hpp" + +namespace boost { +namespace io { +namespace detail { +namespace { + + template<class Tr, class Ch> inline + void empty_buf(BOOST_IO_STD basic_ostringstream<Ch,Tr> & os) { + static const std::basic_string<Ch, Tr> emptyStr; + os.str(emptyStr); + } + + template<class Ch, class Tr> + void do_pad( std::basic_string<Ch,Tr> & s, + std::streamsize w, + const Ch c, + std::ios_base::fmtflags f, + bool center) + // applies centered / left / right padding to the string s. + // Effects : string s is padded. + { + std::streamsize n=w-s.size(); + if(n<=0) { + return; + } + if(center) + { + s.reserve(w); // allocate once for the 2 inserts + const std::streamsize n1 = n /2, n0 = n - n1; + s.insert(s.begin(), n0, c); + s.append(n1, c); + } + else + { + if(f & std::ios_base::left) { + s.append(n, c); + } + else { + s.insert(s.begin(), n, c); + } + } + } // -do_pad(..) + + + template< class Ch, class Tr, class T> inline + void put_head(BOOST_IO_STD basic_ostream<Ch, Tr>& , const T& ) { + } + + template< class Ch, class Tr, class T> inline + void put_head( BOOST_IO_STD basic_ostream<Ch, Tr>& os, const group1<T>& x ) { + os << group_head(x.a1_); // send the first N-1 items, not the last + } + + template< class Ch, class Tr, class T> inline + void put_last( BOOST_IO_STD basic_ostream<Ch, Tr>& os, const T& x ) { + os << x ; + } + + template< class Ch, class Tr, class T> inline + void put_last( BOOST_IO_STD basic_ostream<Ch, Tr>& os, const group1<T>& x ) { + os << group_last(x.a1_); // this selects the last element + } + +#ifndef BOOST_NO_OVERLOAD_FOR_NON_CONST + template< class Ch, class Tr, class T> inline + void put_head( BOOST_IO_STD basic_ostream<Ch, Tr>& , T& ) { + } + + template< class Ch, class Tr, class T> inline + void put_last( BOOST_IO_STD basic_ostream<Ch, Tr>& os, T& x ) { + os << x ; + } +#endif + + + + +template< class Ch, class Tr, class T> +void put( T x, + const format_item<Ch, Tr>& specs, + std::basic_string<Ch, Tr> & res, + BOOST_IO_STD basic_ostringstream<Ch, Tr>& oss_ ) +{ + // does the actual conversion of x, with given params, into a string + // using the *supplied* strinstream. (the stream state is important) + + typedef std::basic_string<Ch, Tr> string_t; + typedef format_item<Ch, Tr> format_item_t; + + stream_format_state<Ch, Tr> prev_state(oss_); + + specs.state_.apply_on(oss_); + + // in case x is a group, apply the manip part of it, + // in order to find width + put_head( oss_, x ); + empty_buf( oss_); + + const std::streamsize w=oss_.width(); + const std::ios_base::fmtflags fl=oss_.flags(); + const bool internal = (fl & std::ios_base::internal) != 0; + const bool two_stepped_padding = internal + && ! ( specs.pad_scheme_ & format_item_t::spacepad ) + && specs.truncate_ < 0 ; + + + if(! two_stepped_padding) + { + if(w>0) // handle simple padding via do_pad, not natively in stream + oss_.width(0); + put_last( oss_, x); + res = oss_.str(); + + if (specs.truncate_ >= 0) + res.erase(specs.truncate_); + + // complex pads : + if(specs.pad_scheme_ & format_item_t::spacepad) + { + if( res.size()==0 || ( res[0]!='+' && res[0]!='-' )) + { + res.insert(res.begin(), 1, ' '); // insert 1 space at pos 0 + } + } + if(w > 0) // need do_pad + { + do_pad(res,w,oss_.fill(), fl, (specs.pad_scheme_ & format_item_t::centered) !=0 ); + } + } + else // 2-stepped padding + { + put_last( oss_, x); // oss_.width() may result in padding. + res = oss_.str(); + + if (specs.truncate_ >= 0) + res.erase(specs.truncate_); + + if( res.size() - w > 0) + { // length w exceeded + // either it was multi-output with first output padding up all width.. + // either it was one big arg and we are fine. + empty_buf( oss_); + oss_.width(0); + put_last(oss_, x ); + string_t tmp = oss_.str(); // minimal-length output + std::streamsize d; + if( (d=w - tmp.size()) <=0 ) + { + // minimal length is already >= w, so no padding (cool!) + res.swap(tmp); + } + else + { // hum.. we need to pad (it was necessarily multi-output) + typedef typename string_t::size_type size_type; + size_type i = 0; + while( i<tmp.size() && tmp[i] == res[i] ) // find where we should pad. + ++i; + tmp.insert(i, static_cast<size_type>( d ), oss_.fill()); + res.swap( tmp ); + } + } + else + { // okay, only one thing was printed and padded, so res is fine. + } + } + + prev_state.apply_on(oss_); + empty_buf( oss_); + oss_.clear(); +} // end- put(..) + + +} // local namespace + + + + + +template< class Ch, class Tr, class T> +void distribute(basic_format<Ch,Tr>& self, T x) + // call put(x, ..) on every occurence of the current argument : +{ + if(self.cur_arg_ >= self.num_args_) + { + if( self.exceptions() & too_many_args_bit ) + boost::throw_exception(too_many_args()); // too many variables have been supplied ! + else return; + } + for(unsigned long i=0; i < self.items_.size(); ++i) + { + if(self.items_[i].argN_ == self.cur_arg_) + { + put<Ch, Tr, T> (x, self.items_[i], self.items_[i].res_, self.oss_ ); + } + } +} + +template<class Ch, class Tr, class T> +basic_format<Ch, Tr>& feed(basic_format<Ch,Tr>& self, T x) +{ + if(self.dumped_) self.clear(); + distribute<Ch, Tr, T> (self, x); + ++self.cur_arg_; + if(self.bound_.size() != 0) + { + while( self.cur_arg_ < self.num_args_ && self.bound_[self.cur_arg_] ) + ++self.cur_arg_; + } + + // this arg is finished, reset the stream's format state + self.state0_.apply_on(self.oss_); + return self; +} + + +} // namespace detail +} // namespace io +} // namespace boost + + +#endif // BOOST_FORMAT_FEED_ARGS_HPP diff --git a/boost/format/format_class.hpp b/boost/format/format_class.hpp new file mode 100644 index 000000000000..9126bfad3639 --- /dev/null +++ b/boost/format/format_class.hpp @@ -0,0 +1,140 @@ +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream (also took its parsing code as basis for printf parsing) + +// ------------------------------------------------------------------------------ +// format_class.hpp : class interface +// ------------------------------------------------------------------------------ + + +#ifndef BOOST_FORMAT_CLASS_HPP +#define BOOST_FORMAT_CLASS_HPP + +#include <vector> +#include <string> + +#include <boost/format/format_fwd.hpp> +#include <boost/format/internals_fwd.hpp> + +#include <boost/format/internals.hpp> + +namespace boost { + +template<class Ch, class Tr> +class basic_format +{ +public: + typedef Ch CharT; // those 2 are necessary for borland compatibilty, + typedef Tr Traits; // in the body of the operator% template. + + + typedef std::basic_string<Ch, Tr> string_t; + typedef BOOST_IO_STD basic_ostringstream<Ch, Tr> internal_stream_t; +private: + typedef BOOST_IO_STD basic_ostream<Ch, Tr> stream_t; + typedef io::detail::stream_format_state<Ch, Tr> stream_format_state; + typedef io::detail::format_item<Ch, Tr> format_item_t; + +public: + basic_format(const Ch* str); + basic_format(const string_t& s); +#ifndef BOOST_NO_STD_LOCALE + basic_format(const Ch* str, const std::locale & loc); + basic_format(const string_t& s, const std::locale & loc); +#endif // no locale + basic_format(const basic_format& x); + basic_format& operator= (const basic_format& x); + + basic_format& clear(); // empty the string buffers (except bound arguments, see clear_binds() ) + + // pass arguments through those operators : + template<class T> basic_format& operator%(const T& x) + { + return io::detail::feed<CharT, Traits, const T&>(*this,x); + } + +#ifndef BOOST_NO_OVERLOAD_FOR_NON_CONST + template<class T> basic_format& operator%(T& x) + { + return io::detail::feed<CharT, Traits, T&>(*this,x); + } +#endif + + + // system for binding arguments : + template<class T> + basic_format& bind_arg(int argN, const T& val) + { + return io::detail::bind_arg_body(*this, argN, val); + } + basic_format& clear_bind(int argN); + basic_format& clear_binds(); + + // modify the params of a directive, by applying a manipulator : + template<class T> + basic_format& modify_item(int itemN, const T& manipulator) + { + return io::detail::modify_item_body(*this, itemN, manipulator) ; + } + + // Choosing which errors will throw exceptions : + unsigned char exceptions() const; + unsigned char exceptions(unsigned char newexcept); + + // final output + string_t str() const; + friend BOOST_IO_STD basic_ostream<Ch, Tr>& + operator<< <Ch, Tr> ( BOOST_IO_STD basic_ostream<Ch, Tr>& , const basic_format& ); + + + template<class Ch2, class Tr2, class T> friend basic_format<Ch2, Tr2>& + io::detail::feed(basic_format<Ch2,Tr2>&, T); + + template<class Ch2, class Tr2, class T> friend + void io::detail::distribute(basic_format<Ch2,Tr2>&, T); + + template<class Ch2, class Tr2, class T> friend + basic_format<Ch2, Tr2>& io::detail::modify_item_body(basic_format<Ch2, Tr2>&, int, const T&); + + template<class Ch2, class Tr2, class T> friend + basic_format<Ch2, Tr2>& io::detail::bind_arg_body(basic_format<Ch2, Tr2>&, int, const T&); + +// make the members private only if the friend templates are supported +private: + + // flag bits, used for style_ + enum style_values { ordered = 1, // set only if all directives are positional directives + special_needs = 4 }; + + // parse the format string : + void parse(const string_t&); + + int style_; // style of format-string : positional or not, etc + int cur_arg_; // keep track of wich argument will come + int num_args_; // number of expected arguments + mutable bool dumped_; // true only after call to str() or << + std::vector<format_item_t> items_; // vector of directives (aka items) + string_t prefix_; // piece of string to insert before first item + + std::vector<bool> bound_; // stores which arguments were bound + // size = num_args OR zero + internal_stream_t oss_; // the internal stream. + stream_format_state state0_; // reference state for oss_ + unsigned char exceptions_; +}; // class basic_format + + +} // namespace boost + + +#endif // BOOST_FORMAT_CLASS_HPP diff --git a/boost/format/format_fwd.hpp b/boost/format/format_fwd.hpp new file mode 100644 index 000000000000..bad2f7238537 --- /dev/null +++ b/boost/format/format_fwd.hpp @@ -0,0 +1,55 @@ +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream (also took its parsing code as basis for printf parsing) + +// ------------------------------------------------------------------------------ +// format_fwd.hpp : forward declarations, for primary header format.hpp +// ------------------------------------------------------------------------------ + +#ifndef BOOST_FORMAT_FWD_HPP +#define BOOST_FORMAT_FWD_HPP + +#include <string> +#include <iosfwd> + +namespace boost { + +template<class charT, class Traits = BOOST_IO_STD char_traits<charT> > class basic_format; + +typedef basic_format<char > format; + +#if !defined(BOOST_NO_STD_WSTRING) && !defined(BOOST_NO_STD_WSTREAMBUF) +typedef basic_format<wchar_t > wformat; +#endif + +namespace io { +enum format_error_bits { bad_format_string_bit = 1, + too_few_args_bit = 2, too_many_args_bit = 4, + out_of_range_bit = 8, + all_error_bits = 255, no_error_bits=0 }; + +// Convertion: format to string +template<class Ch, class Tr> +std::basic_string<Ch, Tr> str(const basic_format<Ch, Tr>& ) ; + +} // namespace io + + +template< class Ch, class Tr> +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator<<( BOOST_IO_STD basic_ostream<Ch, Tr>&, const basic_format<Ch, Tr>&); + + +} // namespace boost + +#endif // BOOST_FORMAT_FWD_HPP diff --git a/boost/format/format_implementation.hpp b/boost/format/format_implementation.hpp new file mode 100644 index 000000000000..58372bb13b02 --- /dev/null +++ b/boost/format/format_implementation.hpp @@ -0,0 +1,268 @@ +// -*- C++ -*- +// Boost general library format --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream + +// ---------------------------------------------------------------------------- +// format_implementation.hpp Implementation of the basic_format class +// ---------------------------------------------------------------------------- + + +#ifndef BOOST_FORMAT_IMPLEMENTATION_HPP +#define BOOST_FORMAT_IMPLEMENTATION_HPP + +//#include <boost/throw_exception.hpp> +//#include <boost/assert.hpp> +#include <boost/format/format_class.hpp> + +namespace boost { + +// -------- format:: ------------------------------------------- +template< class Ch, class Tr> +basic_format<Ch, Tr> ::basic_format(const Ch* str) + : style_(0), cur_arg_(0), num_args_(0), dumped_(false), + items_(), oss_(), exceptions_(io::all_error_bits) +{ + state0_.set_by_stream(oss_); + string_t emptyStr; + if( !str) str = emptyStr.c_str(); + parse( str ); +} + +#ifndef BOOST_NO_STD_LOCALE +template< class Ch, class Tr> +basic_format<Ch, Tr> ::basic_format(const Ch* str, const std::locale & loc) + : style_(0), cur_arg_(0), num_args_(0), dumped_(false), + items_(), oss_(), exceptions_(io::all_error_bits) +{ + oss_.imbue( loc ); + state0_.set_by_stream(oss_); + string_t emptyStr; + if( !str) str = emptyStr.c_str(); + parse( str ); +} + +template< class Ch, class Tr> +basic_format<Ch, Tr> ::basic_format(const string_t& s, const std::locale & loc) + : style_(0), cur_arg_(0), num_args_(0), dumped_(false), + items_(), oss_(), exceptions_(io::all_error_bits) +{ + oss_.imbue( loc ); + state0_.set_by_stream(oss_); + parse(s); +} +#endif //BOOST_NO_STD_LOCALE + +template< class Ch, class Tr> +basic_format<Ch, Tr> ::basic_format(const string_t& s) + : style_(0), cur_arg_(0), num_args_(0), dumped_(false), + items_(), oss_(), exceptions_(io::all_error_bits) +{ + state0_.set_by_stream(oss_); + parse(s); +} + +template< class Ch, class Tr> +basic_format<Ch, Tr> :: basic_format(const basic_format& x) + : style_(x.style_), cur_arg_(x.cur_arg_), num_args_(x.num_args_), dumped_(false), + items_(x.items_), prefix_(x.prefix_), bound_(x.bound_), + oss_(), // <- we obviously can't copy x.oss_ + state0_(x.state0_), exceptions_(x.exceptions_) +{ + state0_.apply_on(oss_); +} + +template< class Ch, class Tr> +basic_format<Ch, Tr>& basic_format<Ch, Tr> ::operator= (const basic_format& x) +{ + if(this == &x) + return *this; + state0_ = x.state0_; + state0_.apply_on(oss_); + + // plus all the other (trivial) assignments : + exceptions_ = x.exceptions_; + items_ = x.items_; + prefix_ = x.prefix_; + bound_=x.bound_; + style_=x.style_; + cur_arg_=x.cur_arg_; + num_args_=x.num_args_; + dumped_=x.dumped_; + return *this; +} + + +template< class Ch, class Tr> +unsigned char basic_format<Ch,Tr> ::exceptions() const +{ + return exceptions_; +} + +template< class Ch, class Tr> +unsigned char basic_format<Ch,Tr> ::exceptions(unsigned char newexcept) +{ + unsigned char swp = exceptions_; + exceptions_ = newexcept; + return swp; +} + + +template< class Ch, class Tr> +basic_format<Ch,Tr>& basic_format<Ch,Tr> ::clear() + // empty the string buffers (except bound arguments, see clear_binds() ) + // and make the format object ready for formatting a new set of arguments +{ + BOOST_ASSERT( bound_.size()==0 || num_args_ == static_cast<int>(bound_.size()) ); + + for(unsigned long i=0; i<items_.size(); ++i){ + items_[i].state_ = items_[i].ref_state_; + // clear converted strings only if the corresponding argument is not bound : + if( bound_.size()==0 || !bound_[ items_[i].argN_ ] ) items_[i].res_.resize(0); + } + cur_arg_=0; dumped_=false; + // maybe first arg is bound: + if(bound_.size() != 0) + { + while(cur_arg_ < num_args_ && bound_[cur_arg_] ) ++cur_arg_; + } + return *this; +} + +template< class Ch, class Tr> +basic_format<Ch,Tr>& basic_format<Ch,Tr> ::clear_binds() + // cancel all bindings, and clear() +{ + bound_.resize(0); + clear(); + return *this; +} + +template< class Ch, class Tr> +basic_format<Ch,Tr>& basic_format<Ch,Tr> ::clear_bind(int argN) + // cancel the binding of ONE argument, and clear() +{ + if(argN<1 || argN > num_args_ || bound_.size()==0 || !bound_[argN-1] ) + { + if( exceptions() & io::out_of_range_bit ) + boost::throw_exception(io::out_of_range()); // arg not in range. + else return *this; + } + bound_[argN-1]=false; + clear(); + return *this; +} + + + +template< class Ch, class Tr> +std::basic_string<Ch,Tr> basic_format<Ch,Tr> ::str() const +{ + dumped_=true; + if(items_.size()==0) + return prefix_; + if( cur_arg_ < num_args_) + if( exceptions() & io::too_few_args_bit ) + boost::throw_exception(io::too_few_args()); // not enough variables have been supplied ! + + unsigned long sz = prefix_.size(); + unsigned long i; + for(i=0; i < items_.size(); ++i) + sz += items_[i].res_.size() + items_[i].appendix_.size(); + string_t res; + res.reserve(sz); + + res += prefix_; + for(i=0; i < items_.size(); ++i) + { + const format_item_t& item = items_[i]; + res += item.res_; + if( item.argN_ == format_item_t::argN_tabulation) + { + BOOST_ASSERT( item.pad_scheme_ & format_item_t::tabulation); + std::streamsize n = item.state_.width_ - res.size(); + if( n > 0 ) + res.append( n, item.state_.fill_ ); + } + res += item.appendix_; + } + return res; +} + +namespace io { +namespace detail { + +template<class Ch, class Tr, class T> +basic_format<Ch, Tr>& bind_arg_body( basic_format<Ch, Tr>& self, + int argN, + const T& val) + // bind one argument to a fixed value + // this is persistent over clear() calls, thus also over str() and << +{ + if(self.dumped_) self.clear(); // needed, because we will modify cur_arg_.. + if(argN<1 || argN > self.num_args_) + { + if( self.exceptions() & io::out_of_range_bit ) + boost::throw_exception(io::out_of_range()); // arg not in range. + else return self; + } + if(self.bound_.size()==0) + self.bound_.assign(self.num_args_,false); + else + BOOST_ASSERT( self.num_args_ == static_cast<signed int>(self.bound_.size()) ); + int o_cur_arg = self.cur_arg_; + self.cur_arg_ = argN-1; // arrays begin at 0 + + self.bound_[self.cur_arg_]=false; // if already set, we unset and re-sets.. + self.operator%(val); // put val at the right place, because cur_arg is set + + + // Now re-position cur_arg before leaving : + self.cur_arg_ = o_cur_arg; + self.bound_[argN-1]=true; + if(self.cur_arg_ == argN-1 ) + // hum, now this arg is bound, so move to next free arg + { + while(self.cur_arg_ < self.num_args_ && self.bound_[self.cur_arg_]) ++self.cur_arg_; + } + // In any case, we either have all args, or are on a non-binded arg : + BOOST_ASSERT( self.cur_arg_ >= self.num_args_ || ! self.bound_[self.cur_arg_]); + return self; +} + +template<class Ch, class Tr, class T> +basic_format<Ch, Tr>& modify_item_body( basic_format<Ch, Tr>& self, + int itemN, + const T& manipulator) + // applies a manipulator to the format_item describing a given directive. + // this is a permanent change, clear or clear_binds won't cancel that. +{ + if(itemN<1 || itemN >= static_cast<signed int>(self.items_.size() )) + { + if( self.exceptions() & io::out_of_range_bit ) + boost::throw_exception(io::out_of_range()); // item not in range. + else return self; + } + self.items_[itemN-1].ref_state_.apply_manip( manipulator ); + self.items_[itemN-1].state_ = self.items_[itemN-1].ref_state_; + return self; +} + +} // namespace detail + +} // namespace io + +} // namespace boost + + + +#endif // BOOST_FORMAT_IMPLEMENTATION_HPP diff --git a/boost/format/free_funcs.hpp b/boost/format/free_funcs.hpp new file mode 100644 index 000000000000..d552e8baa2af --- /dev/null +++ b/boost/format/free_funcs.hpp @@ -0,0 +1,72 @@ +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream (also took its parsing code as basis for printf parsing) + +// ------------------------------------------------------------------------------ +// free_funcs.hpp : implementation of the free functions declared in namespace format +// ------------------------------------------------------------------------------ + +#ifndef BOOST_FORMAT_FUNCS_HPP +#define BOOST_FORMAT_FUNCS_HPP + +#include "boost/format/format_class.hpp" +//#include "boost/throw_exception.hpp" + +namespace boost { + +namespace io { + template<class Ch, class Tr> inline + std::basic_string<Ch, Tr> str(const basic_format<Ch, Tr>& f) + // adds up all pieces of strings and converted items, and return the formatted string + { + return f.str(); + } +} // - namespace io + +template< class Ch, class Tr> +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator<<( BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const boost::basic_format<Ch, Tr>& f) + // effect: "return os << str(f);" but we can try to do it faster +{ + typedef boost::basic_format<Ch, Tr> format_t; + if(f.items_.size()==0) + os << f.prefix_; + else { + if(f.cur_arg_ < f.num_args_) + if( f.exceptions() & io::too_few_args_bit ) + boost::throw_exception(io::too_few_args()); // not enough variables have been supplied ! + if(f.style_ & format_t::special_needs) + os << f.str(); + else { + // else we dont have to count chars output, so we dump directly to os : + os << f.prefix_; + for(unsigned long i=0; i<f.items_.size(); ++i) + { + const typename format_t::format_item_t& item = f.items_[i]; + os << item.res_; + os << item.appendix_; + + } + } + } + f.dumped_=true; + return os; +} + + + +} // namespace boost + + +#endif // BOOST_FORMAT_FUNCS_HPP diff --git a/boost/format/group.hpp b/boost/format/group.hpp new file mode 100644 index 000000000000..d7785427ee6e --- /dev/null +++ b/boost/format/group.hpp @@ -0,0 +1,680 @@ + +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream + +// ---------------------------------------------------------------------------- + +// group.hpp : encapsulates a group of manipulators along with an argument +// +// group_head : cut the last element of a group out. +// (is overloaded below on each type of group) + +// group_last : returns the last element of a group +// (is overloaded below on each type of group) + +// ---------------------------------------------------------------------------- + + +#ifndef BOOST_FORMAT_GROUP_HPP +#define BOOST_FORMAT_GROUP_HPP + + +namespace boost { +namespace io { + + +namespace detail { + + +// empty group, but useful even though. +struct group0 +{ + group0() {} +}; + +template <class Ch, class Tr> +inline +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator << ( BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const group0& ) +{ + return os; +} + +template <class T1> +struct group1 +{ + T1 a1_; + group1(T1 a1) + : a1_(a1) + {} +}; + +template <class Ch, class Tr, class T1> +inline +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator << (BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const group1<T1>& x) +{ + os << x.a1_; + return os; +} + + + + +template <class T1,class T2> +struct group2 +{ + T1 a1_; + T2 a2_; + group2(T1 a1,T2 a2) + : a1_(a1),a2_(a2) + {} +}; + +template <class Ch, class Tr, class T1,class T2> +inline +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator << (BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const group2<T1,T2>& x) +{ + os << x.a1_<< x.a2_; + return os; +} + +template <class T1,class T2,class T3> +struct group3 +{ + T1 a1_; + T2 a2_; + T3 a3_; + group3(T1 a1,T2 a2,T3 a3) + : a1_(a1),a2_(a2),a3_(a3) + {} +}; + +template <class Ch, class Tr, class T1,class T2,class T3> +inline +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator << (BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const group3<T1,T2,T3>& x) +{ + os << x.a1_<< x.a2_<< x.a3_; + return os; +} + +template <class T1,class T2,class T3,class T4> +struct group4 +{ + T1 a1_; + T2 a2_; + T3 a3_; + T4 a4_; + group4(T1 a1,T2 a2,T3 a3,T4 a4) + : a1_(a1),a2_(a2),a3_(a3),a4_(a4) + {} +}; + +template <class Ch, class Tr, class T1,class T2,class T3,class T4> +inline +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator << (BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const group4<T1,T2,T3,T4>& x) +{ + os << x.a1_<< x.a2_<< x.a3_<< x.a4_; + return os; +} + +template <class T1,class T2,class T3,class T4,class T5> +struct group5 +{ + T1 a1_; + T2 a2_; + T3 a3_; + T4 a4_; + T5 a5_; + group5(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5) + : a1_(a1),a2_(a2),a3_(a3),a4_(a4),a5_(a5) + {} +}; + +template <class Ch, class Tr, class T1,class T2,class T3,class T4,class T5> +inline +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator << (BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const group5<T1,T2,T3,T4,T5>& x) +{ + os << x.a1_<< x.a2_<< x.a3_<< x.a4_<< x.a5_; + return os; +} + +template <class T1,class T2,class T3,class T4,class T5,class T6> +struct group6 +{ + T1 a1_; + T2 a2_; + T3 a3_; + T4 a4_; + T5 a5_; + T6 a6_; + group6(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6) + : a1_(a1),a2_(a2),a3_(a3),a4_(a4),a5_(a5),a6_(a6) + {} +}; + +template <class Ch, class Tr, class T1,class T2,class T3,class T4,class T5,class T6> +inline +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator << (BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const group6<T1,T2,T3,T4,T5,T6>& x) +{ + os << x.a1_<< x.a2_<< x.a3_<< x.a4_<< x.a5_<< x.a6_; + return os; +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7> +struct group7 +{ + T1 a1_; + T2 a2_; + T3 a3_; + T4 a4_; + T5 a5_; + T6 a6_; + T7 a7_; + group7(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6,T7 a7) + : a1_(a1),a2_(a2),a3_(a3),a4_(a4),a5_(a5),a6_(a6),a7_(a7) + {} +}; + +template <class Ch, class Tr, class T1,class T2,class T3,class T4,class T5,class T6,class T7> +inline +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator << (BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const group7<T1,T2,T3,T4,T5,T6,T7>& x) +{ + os << x.a1_<< x.a2_<< x.a3_<< x.a4_<< x.a5_<< x.a6_<< x.a7_; + return os; +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8> +struct group8 +{ + T1 a1_; + T2 a2_; + T3 a3_; + T4 a4_; + T5 a5_; + T6 a6_; + T7 a7_; + T8 a8_; + group8(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6,T7 a7,T8 a8) + : a1_(a1),a2_(a2),a3_(a3),a4_(a4),a5_(a5),a6_(a6),a7_(a7),a8_(a8) + {} +}; + +template <class Ch, class Tr, class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8> +inline +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator << (BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const group8<T1,T2,T3,T4,T5,T6,T7,T8>& x) +{ + os << x.a1_<< x.a2_<< x.a3_<< x.a4_<< x.a5_<< x.a6_<< x.a7_<< x.a8_; + return os; +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8,class T9> +struct group9 +{ + T1 a1_; + T2 a2_; + T3 a3_; + T4 a4_; + T5 a5_; + T6 a6_; + T7 a7_; + T8 a8_; + T9 a9_; + group9(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6,T7 a7,T8 a8,T9 a9) + : a1_(a1),a2_(a2),a3_(a3),a4_(a4),a5_(a5),a6_(a6),a7_(a7),a8_(a8),a9_(a9) + {} +}; + +template <class Ch, class Tr, class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8,class T9> +inline +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator << (BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const group9<T1,T2,T3,T4,T5,T6,T7,T8,T9>& x) +{ + os << x.a1_<< x.a2_<< x.a3_<< x.a4_<< x.a5_<< x.a6_<< x.a7_<< x.a8_<< x.a9_; + return os; +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8,class T9,class T10> +struct group10 +{ + T1 a1_; + T2 a2_; + T3 a3_; + T4 a4_; + T5 a5_; + T6 a6_; + T7 a7_; + T8 a8_; + T9 a9_; + T10 a10_; + group10(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6,T7 a7,T8 a8,T9 a9,T10 a10) + : a1_(a1),a2_(a2),a3_(a3),a4_(a4),a5_(a5),a6_(a6),a7_(a7),a8_(a8),a9_(a9),a10_(a10) + {} +}; + +template <class Ch, class Tr, class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8,class T9,class T10> +inline +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator << (BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const group10<T1,T2,T3,T4,T5,T6,T7,T8,T9,T10>& x) +{ + os << x.a1_<< x.a2_<< x.a3_<< x.a4_<< x.a5_<< x.a6_<< x.a7_<< x.a8_<< x.a9_<< x.a10_; + return os; +} + + + + +template <class T1,class T2> +inline +group1<T1> +group_head( group2<T1,T2> const& x) +{ + return group1<T1> (x.a1_); +} + +template <class T1,class T2> +inline +group1<T2> +group_last( group2<T1,T2> const& x) +{ + return group1<T2> (x.a2_); +} + + + +template <class T1,class T2,class T3> +inline +group2<T1,T2> +group_head( group3<T1,T2,T3> const& x) +{ + return group2<T1,T2> (x.a1_,x.a2_); +} + +template <class T1,class T2,class T3> +inline +group1<T3> +group_last( group3<T1,T2,T3> const& x) +{ + return group1<T3> (x.a3_); +} + + + +template <class T1,class T2,class T3,class T4> +inline +group3<T1,T2,T3> +group_head( group4<T1,T2,T3,T4> const& x) +{ + return group3<T1,T2,T3> (x.a1_,x.a2_,x.a3_); +} + +template <class T1,class T2,class T3,class T4> +inline +group1<T4> +group_last( group4<T1,T2,T3,T4> const& x) +{ + return group1<T4> (x.a4_); +} + + + +template <class T1,class T2,class T3,class T4,class T5> +inline +group4<T1,T2,T3,T4> +group_head( group5<T1,T2,T3,T4,T5> const& x) +{ + return group4<T1,T2,T3,T4> (x.a1_,x.a2_,x.a3_,x.a4_); +} + +template <class T1,class T2,class T3,class T4,class T5> +inline +group1<T5> +group_last( group5<T1,T2,T3,T4,T5> const& x) +{ + return group1<T5> (x.a5_); +} + + + +template <class T1,class T2,class T3,class T4,class T5,class T6> +inline +group5<T1,T2,T3,T4,T5> +group_head( group6<T1,T2,T3,T4,T5,T6> const& x) +{ + return group5<T1,T2,T3,T4,T5> (x.a1_,x.a2_,x.a3_,x.a4_,x.a5_); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6> +inline +group1<T6> +group_last( group6<T1,T2,T3,T4,T5,T6> const& x) +{ + return group1<T6> (x.a6_); +} + + + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7> +inline +group6<T1,T2,T3,T4,T5,T6> +group_head( group7<T1,T2,T3,T4,T5,T6,T7> const& x) +{ + return group6<T1,T2,T3,T4,T5,T6> (x.a1_,x.a2_,x.a3_,x.a4_,x.a5_,x.a6_); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7> +inline +group1<T7> +group_last( group7<T1,T2,T3,T4,T5,T6,T7> const& x) +{ + return group1<T7> (x.a7_); +} + + + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8> +inline +group7<T1,T2,T3,T4,T5,T6,T7> +group_head( group8<T1,T2,T3,T4,T5,T6,T7,T8> const& x) +{ + return group7<T1,T2,T3,T4,T5,T6,T7> (x.a1_,x.a2_,x.a3_,x.a4_,x.a5_,x.a6_,x.a7_); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8> +inline +group1<T8> +group_last( group8<T1,T2,T3,T4,T5,T6,T7,T8> const& x) +{ + return group1<T8> (x.a8_); +} + + + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8,class T9> +inline +group8<T1,T2,T3,T4,T5,T6,T7,T8> +group_head( group9<T1,T2,T3,T4,T5,T6,T7,T8,T9> const& x) +{ + return group8<T1,T2,T3,T4,T5,T6,T7,T8> (x.a1_,x.a2_,x.a3_,x.a4_,x.a5_,x.a6_,x.a7_,x.a8_); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8,class T9> +inline +group1<T9> +group_last( group9<T1,T2,T3,T4,T5,T6,T7,T8,T9> const& x) +{ + return group1<T9> (x.a9_); +} + + + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8,class T9,class T10> +inline +group9<T1,T2,T3,T4,T5,T6,T7,T8,T9> +group_head( group10<T1,T2,T3,T4,T5,T6,T7,T8,T9,T10> const& x) +{ + return group9<T1,T2,T3,T4,T5,T6,T7,T8,T9> (x.a1_,x.a2_,x.a3_,x.a4_,x.a5_,x.a6_,x.a7_,x.a8_,x.a9_); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8,class T9,class T10> +inline +group1<T10> +group_last( group10<T1,T2,T3,T4,T5,T6,T7,T8,T9,T10> const& x) +{ + return group1<T10> (x.a10_); +} + + + + + +} // namespace detail + + + +// helper functions + + +inline detail::group1< detail::group0 > +group() { return detail::group1< detail::group0 > ( detail::group0() ); } + +template <class T1, class Var> +inline +detail::group1< detail::group2<T1, Var const&> > + group(T1 a1, Var const& var) +{ + return detail::group1< detail::group2<T1, Var const&> > + ( detail::group2<T1, Var const&> + (a1, var) + ); +} + +template <class T1,class T2, class Var> +inline +detail::group1< detail::group3<T1,T2, Var const&> > + group(T1 a1,T2 a2, Var const& var) +{ + return detail::group1< detail::group3<T1,T2, Var const&> > + ( detail::group3<T1,T2, Var const&> + (a1,a2, var) + ); +} + +template <class T1,class T2,class T3, class Var> +inline +detail::group1< detail::group4<T1,T2,T3, Var const&> > + group(T1 a1,T2 a2,T3 a3, Var const& var) +{ + return detail::group1< detail::group4<T1,T2,T3, Var const&> > + ( detail::group4<T1,T2,T3, Var const&> + (a1,a2,a3, var) + ); +} + +template <class T1,class T2,class T3,class T4, class Var> +inline +detail::group1< detail::group5<T1,T2,T3,T4, Var const&> > + group(T1 a1,T2 a2,T3 a3,T4 a4, Var const& var) +{ + return detail::group1< detail::group5<T1,T2,T3,T4, Var const&> > + ( detail::group5<T1,T2,T3,T4, Var const&> + (a1,a2,a3,a4, var) + ); +} + +template <class T1,class T2,class T3,class T4,class T5, class Var> +inline +detail::group1< detail::group6<T1,T2,T3,T4,T5, Var const&> > + group(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5, Var const& var) +{ + return detail::group1< detail::group6<T1,T2,T3,T4,T5, Var const&> > + ( detail::group6<T1,T2,T3,T4,T5, Var const&> + (a1,a2,a3,a4,a5, var) + ); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6, class Var> +inline +detail::group1< detail::group7<T1,T2,T3,T4,T5,T6, Var const&> > + group(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6, Var const& var) +{ + return detail::group1< detail::group7<T1,T2,T3,T4,T5,T6, Var const&> > + ( detail::group7<T1,T2,T3,T4,T5,T6, Var const&> + (a1,a2,a3,a4,a5,a6, var) + ); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7, class Var> +inline +detail::group1< detail::group8<T1,T2,T3,T4,T5,T6,T7, Var const&> > + group(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6,T7 a7, Var const& var) +{ + return detail::group1< detail::group8<T1,T2,T3,T4,T5,T6,T7, Var const&> > + ( detail::group8<T1,T2,T3,T4,T5,T6,T7, Var const&> + (a1,a2,a3,a4,a5,a6,a7, var) + ); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8, class Var> +inline +detail::group1< detail::group9<T1,T2,T3,T4,T5,T6,T7,T8, Var const&> > + group(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6,T7 a7,T8 a8, Var const& var) +{ + return detail::group1< detail::group9<T1,T2,T3,T4,T5,T6,T7,T8, Var const&> > + ( detail::group9<T1,T2,T3,T4,T5,T6,T7,T8, Var const&> + (a1,a2,a3,a4,a5,a6,a7,a8, var) + ); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8,class T9, class Var> +inline +detail::group1< detail::group10<T1,T2,T3,T4,T5,T6,T7,T8,T9, Var const&> > + group(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6,T7 a7,T8 a8,T9 a9, Var const& var) +{ + return detail::group1< detail::group10<T1,T2,T3,T4,T5,T6,T7,T8,T9, Var const&> > + ( detail::group10<T1,T2,T3,T4,T5,T6,T7,T8,T9, Var const&> + (a1,a2,a3,a4,a5,a6,a7,a8,a9, var) + ); +} + + +#ifndef BOOST_NO_OVERLOAD_FOR_NON_CONST + +template <class T1, class Var> +inline +detail::group1< detail::group2<T1, Var&> > + group(T1 a1, Var& var) +{ + return detail::group1< detail::group2<T1, Var&> > + ( detail::group2<T1, Var&> + (a1, var) + ); +} + +template <class T1,class T2, class Var> +inline +detail::group1< detail::group3<T1,T2, Var&> > + group(T1 a1,T2 a2, Var& var) +{ + return detail::group1< detail::group3<T1,T2, Var&> > + ( detail::group3<T1,T2, Var&> + (a1,a2, var) + ); +} + +template <class T1,class T2,class T3, class Var> +inline +detail::group1< detail::group4<T1,T2,T3, Var&> > + group(T1 a1,T2 a2,T3 a3, Var& var) +{ + return detail::group1< detail::group4<T1,T2,T3, Var&> > + ( detail::group4<T1,T2,T3, Var&> + (a1,a2,a3, var) + ); +} + +template <class T1,class T2,class T3,class T4, class Var> +inline +detail::group1< detail::group5<T1,T2,T3,T4, Var&> > + group(T1 a1,T2 a2,T3 a3,T4 a4, Var& var) +{ + return detail::group1< detail::group5<T1,T2,T3,T4, Var&> > + ( detail::group5<T1,T2,T3,T4, Var&> + (a1,a2,a3,a4, var) + ); +} + +template <class T1,class T2,class T3,class T4,class T5, class Var> +inline +detail::group1< detail::group6<T1,T2,T3,T4,T5, Var&> > + group(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5, Var& var) +{ + return detail::group1< detail::group6<T1,T2,T3,T4,T5, Var&> > + ( detail::group6<T1,T2,T3,T4,T5, Var&> + (a1,a2,a3,a4,a5, var) + ); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6, class Var> +inline +detail::group1< detail::group7<T1,T2,T3,T4,T5,T6, Var&> > + group(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6, Var& var) +{ + return detail::group1< detail::group7<T1,T2,T3,T4,T5,T6, Var&> > + ( detail::group7<T1,T2,T3,T4,T5,T6, Var&> + (a1,a2,a3,a4,a5,a6, var) + ); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7, class Var> +inline +detail::group1< detail::group8<T1,T2,T3,T4,T5,T6,T7, Var&> > + group(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6,T7 a7, Var& var) +{ + return detail::group1< detail::group8<T1,T2,T3,T4,T5,T6,T7, Var&> > + ( detail::group8<T1,T2,T3,T4,T5,T6,T7, Var&> + (a1,a2,a3,a4,a5,a6,a7, var) + ); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8, class Var> +inline +detail::group1< detail::group9<T1,T2,T3,T4,T5,T6,T7,T8, Var&> > + group(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6,T7 a7,T8 a8, Var& var) +{ + return detail::group1< detail::group9<T1,T2,T3,T4,T5,T6,T7,T8, Var&> > + ( detail::group9<T1,T2,T3,T4,T5,T6,T7,T8, Var&> + (a1,a2,a3,a4,a5,a6,a7,a8, var) + ); +} + +template <class T1,class T2,class T3,class T4,class T5,class T6,class T7,class T8,class T9, class Var> +inline +detail::group1< detail::group10<T1,T2,T3,T4,T5,T6,T7,T8,T9, Var&> > + group(T1 a1,T2 a2,T3 a3,T4 a4,T5 a5,T6 a6,T7 a7,T8 a8,T9 a9, Var& var) +{ + return detail::group1< detail::group10<T1,T2,T3,T4,T5,T6,T7,T8,T9, Var&> > + ( detail::group10<T1,T2,T3,T4,T5,T6,T7,T8,T9, Var&> + (a1,a2,a3,a4,a5,a6,a7,a8,a9, var) + ); +} + + +#endif //end- #ifndef BOOST_NO_OVERLOAD_FOR_NON_CONST + + +} // namespace io + +} // namespace boost + + +#endif // BOOST_FORMAT_GROUP_HPP diff --git a/boost/format/internals.hpp b/boost/format/internals.hpp new file mode 100644 index 000000000000..52448b731c2f --- /dev/null +++ b/boost/format/internals.hpp @@ -0,0 +1,169 @@ +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream + +// ---------------------------------------------------------------------------- +// internals.hpp : internal structs. included by format.hpp +// stream_format_state, and format_item +// ---------------------------------------------------------------------------- + + +#ifndef BOOST_FORMAT_INTERNALS_HPP +#define BOOST_FORMAT_INTERNALS_HPP + + +#include <string> +#include <sstream> + +namespace boost { +namespace io { +namespace detail { + + +// -------------- +// set of params that define the format state of a stream + +template<class Ch, class Tr> +struct stream_format_state +{ + typedef BOOST_IO_STD basic_ios<Ch, Tr> basic_ios; + + std::streamsize width_; + std::streamsize precision_; + Ch fill_; + std::ios_base::fmtflags flags_; + + stream_format_state() : width_(-1), precision_(-1), fill_(0), flags_(std::ios_base::dec) {} + stream_format_state(basic_ios& os) {set_by_stream(os); } + + void apply_on(basic_ios & os) const; //- applies format_state to the stream + template<class T> void apply_manip(T manipulator) //- modifies state by applying manipulator. + { apply_manip_body<Ch, Tr, T>( *this, manipulator) ; } + void reset(); //- sets to default state. + void set_by_stream(const basic_ios& os); //- sets to os's state. +}; + + + +// -------------- +// format_item : stores all parameters that can be defined by directives in the format-string + +template<class Ch, class Tr> +struct format_item +{ + enum pad_values { zeropad = 1, spacepad =2, centered=4, tabulation = 8 }; + + enum arg_values { argN_no_posit = -1, // non-positional directive. argN will be set later. + argN_tabulation = -2, // tabulation directive. (no argument read) + argN_ignored = -3 // ignored directive. (no argument read) + }; + typedef BOOST_IO_STD basic_ios<Ch, Tr> basic_ios; + typedef detail::stream_format_state<Ch, Tr> stream_format_state; + typedef std::basic_string<Ch, Tr> string_t; + typedef BOOST_IO_STD basic_ostringstream<Ch, Tr> internal_stream_t; + + + int argN_; //- argument number (starts at 0, eg : %1 => argN=0) + // negative values are used for items that don't process + // an argument + string_t res_; //- result of the formatting of this item + string_t appendix_; //- piece of string between this item and the next + + stream_format_state ref_state_;// set by parsing the format_string, is only affected by modify_item + stream_format_state state_; // always same as ref_state, _unless_ modified by manipulators 'group(..)' + + // non-stream format-state parameters + signed int truncate_; //- is >=0 for directives like %.5s (take 5 chars from the string) + unsigned int pad_scheme_; //- several possible padding schemes can mix. see pad_values + + format_item() : argN_(argN_no_posit), truncate_(-1), pad_scheme_(0) {} + + void compute_states(); // sets states according to truncate and pad_scheme. +}; + + + +// ----------------------------------------------------------- +// Definitions +// ----------------------------------------------------------- + +// --- stream_format_state:: ------------------------------------------- +template<class Ch, class Tr> inline +void stream_format_state<Ch,Tr> ::apply_on(basic_ios & os) const + // set the state of this stream according to our params +{ + if(width_ != -1) + os.width(width_); + if(precision_ != -1) + os.precision(precision_); + if(fill_ != 0) + os.fill(fill_); + os.flags(flags_); +} + +template<class Ch, class Tr> inline +void stream_format_state<Ch,Tr> ::set_by_stream(const basic_ios& os) + // set our params according to the state of this stream +{ + flags_ = os.flags(); + width_ = os.width(); + precision_ = os.precision(); + fill_ = os.fill(); +} + +template<class Ch, class Tr, class T> inline +void apply_manip_body( stream_format_state<Ch, Tr>& self, + T manipulator) + // modify our params according to the manipulator +{ + BOOST_IO_STD basic_stringstream<Ch, Tr> ss; + self.apply_on( ss ); + ss << manipulator; + self.set_by_stream( ss ); +} + +template<class Ch, class Tr> inline +void stream_format_state<Ch,Tr> ::reset() + // set our params to standard's default state +{ + width_=-1; precision_=-1; fill_=0; + flags_ = std::ios_base::dec; +} + + +// --- format_items:: ------------------------------------------- +template<class Ch, class Tr> inline +void format_item<Ch, Tr> ::compute_states() + // reflect pad_scheme_ on state_ and ref_state_ + // because some pad_schemes has complex consequences on several state params. +{ + if(pad_scheme_ & zeropad) + { + if(ref_state_.flags_ & std::ios_base::left) + { + pad_scheme_ = pad_scheme_ & (~zeropad); // ignore zeropad in left alignment + } + else + { + ref_state_.fill_='0'; + ref_state_.flags_ |= std::ios_base::internal; + } + } + state_ = ref_state_; +} + + +} } } // namespaces boost :: io :: detail + + +#endif // BOOST_FORMAT_INTERNALS_HPP diff --git a/boost/format/internals_fwd.hpp b/boost/format/internals_fwd.hpp new file mode 100644 index 000000000000..f260e6dec9f9 --- /dev/null +++ b/boost/format/internals_fwd.hpp @@ -0,0 +1,65 @@ +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream (also took its parsing code as basis for printf parsing) + +// ------------------------------------------------------------------------------ +// internals_fwd.hpp : forward declarations, for internal headers +// ------------------------------------------------------------------------------ + +#ifndef BOOST_FORMAT_INTERNAL_FWD_HPP +#define BOOST_FORMAT_INTERNAL_FWD_HPP + +#include "boost/format/format_fwd.hpp" + + +namespace boost { +namespace io { + +namespace detail { + template<class Ch, class Tr> struct stream_format_state; + template<class Ch, class Tr> struct format_item; +} + + +namespace detail { + + // these functions were intended as methods, + // but MSVC have problems with template member functions : + + // defined in format_implementation.hpp : + template<class Ch, class Tr, class T> + basic_format<Ch, Tr>& modify_item_body( basic_format<Ch, Tr>& self, + int itemN, const T& manipulator); + + template<class Ch, class Tr, class T> + basic_format<Ch, Tr>& bind_arg_body( basic_format<Ch, Tr>& self, + int argN, const T& val); + + template<class Ch, class Tr, class T> + void apply_manip_body( stream_format_state<Ch, Tr>& self, + T manipulator); + + // argument feeding (defined in feed_args.hpp ) : + template<class Ch, class Tr, class T> + void distribute(basic_format<Ch,Tr>& self, T x); + + template<class Ch, class Tr, class T> + basic_format<Ch, Tr>& feed(basic_format<Ch,Tr>& self, T x); + +} // namespace detail + +} // namespace io +} // namespace boost + + +#endif // BOOST_FORMAT_INTERNAL_FWD_HPP diff --git a/boost/format/macros_default.hpp b/boost/format/macros_default.hpp new file mode 100644 index 000000000000..4fd84a163fb3 --- /dev/null +++ b/boost/format/macros_default.hpp @@ -0,0 +1,48 @@ +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream (also took its parsing code as basis for printf parsing) + +// ------------------------------------------------------------------------------ +// macros_default.hpp : configuration for the format library +// provides default values for the stl workaround macros +// ------------------------------------------------------------------------------ + +#ifndef BOOST_FORMAT_MACROS_DEFAULT_HPP +#define BOOST_FORMAT_MACROS_DEFAULT_HPP + +// *** This should go to "boost/config/suffix.hpp". + +#ifndef BOOST_IO_STD +# define BOOST_IO_STD std:: +#endif + +// **** Workaround for io streams, stlport and msvc. +#ifdef BOOST_IO_NEEDS_USING_DECLARATION +namespace boost { + using std::char_traits; + using std::basic_ostream; + using std::basic_ostringstream; + namespace io { + using std::basic_ostream; + namespace detail { + using std::basic_ios; + using std::basic_ostream; + using std::basic_ostringstream; + } + } +} +#endif + +// ------------------------------------------------------------------------------ + +#endif // BOOST_FORMAT_MACROS_DEFAULT_HPP diff --git a/boost/format/parsing.hpp b/boost/format/parsing.hpp new file mode 100644 index 000000000000..a461314f9828 --- /dev/null +++ b/boost/format/parsing.hpp @@ -0,0 +1,457 @@ +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rudiger Loos's format class +// and Karl Nelson's ofstream (also took its parsing code as basis for printf parsing) + +// ------------------------------------------------------------------------------ +// parsing.hpp : implementation of the parsing member functions +// ( parse, parse_printf_directive) +// ------------------------------------------------------------------------------ + + +#ifndef BOOST_FORMAT_PARSING_HPP +#define BOOST_FORMAT_PARSING_HPP + + +#include <boost/format/format_class.hpp> +//#include <boost/throw_exception.hpp> +//#include <boost/assert.hpp> + + +namespace boost { +namespace io { +namespace detail { + + template<class Ch, class Stream> inline + bool wrap_isdigit(Ch c, Stream &os) + { +#ifndef BOOST_NO_LOCALE_ISIDIGIT + return std::isdigit(c, os.rdbuf()->getloc() ); +# else + using namespace std; + return isdigit(c); +#endif + } //end- wrap_isdigit(..) + + template<class Res, class Ch, class Tr> inline + Res str2int(const std::basic_string<Ch, Tr>& s, + typename std::basic_string<Ch, Tr>::size_type start, + BOOST_IO_STD basic_ios<Ch,Tr> &os, + const Res = Res(0) ) + // Input : char string, with starting index + // a basic_ios& merely to call its widen/narrow member function in the desired locale. + // Effects : reads s[start:] and converts digits into an integral n, of type Res + // Returns : n + { + Res n = 0; + while(start<s.size() && wrap_isdigit(s[start], os) ) { + char cur_ch = os.narrow( s[start], 0); + BOOST_ASSERT(cur_ch != 0 ); // since we called isdigit, this should not happen. + n *= 10; + n += cur_ch - '0'; // 22.2.1.1.2 of the C++ standard + ++start; + } + return n; + } + + template<class Ch, class Tr> + void skip_asterisk(const std::basic_string<Ch,Tr> & buf, + typename std::basic_string<Ch,Tr>::size_type * pos_p, + BOOST_IO_STD basic_ios<Ch, Tr> &os) + // skip printf's "asterisk-fields" directives in the format-string buf + // Input : char string, with starting index *pos_p + // a basic_ios& merely to call its widen/narrow member function in the desired locale. + // Effects : advance *pos_p by skipping printf's asterisk fields. + // Returns : nothing + { + using namespace std; + BOOST_ASSERT( pos_p != 0); + if(*pos_p >= buf.size() ) return; + if(buf[ *pos_p]==os.widen('*')) { + ++ (*pos_p); + while (*pos_p < buf.size() && wrap_isdigit(buf[*pos_p],os)) ++(*pos_p); + if(buf[*pos_p]==os.widen('$')) ++(*pos_p); + } + } + + + inline void maybe_throw_exception( unsigned char exceptions) + // auxiliary func called by parse_printf_directive + // for centralising error handling + // it either throws if user sets the corresponding flag, or does nothing. + { + if(exceptions & io::bad_format_string_bit) + boost::throw_exception(io::bad_format_string()); + } + + + + template<class Ch, class Tr> + bool parse_printf_directive(const std::basic_string<Ch, Tr> & buf, + typename std::basic_string<Ch, Tr>::size_type * pos_p, + detail::format_item<Ch, Tr> * fpar, + BOOST_IO_STD basic_ios<Ch,Tr> &os, + unsigned char exceptions) + // Input : a 'printf-directive' in the format-string, starting at buf[ *pos_p ] + // a basic_ios& merely to call its widen/narrow member function in the desired locale. + // a bitset'excpetions' telling whether to throw exceptions on errors. + // Returns : true if parse somehow succeeded (possibly ignoring errors if exceptions disabled) + // false if it failed so bad that the directive should be printed verbatim + // Effects : - *pos_p is incremented so that buf[*pos_p] is the first char after the directive + // - *fpar is set with the parameters read in the directive + { + typedef format_item<Ch, Tr> format_item_t; + BOOST_ASSERT( pos_p != 0); + typename std::basic_string<Ch, Tr>::size_type &i1 = *pos_p, + i0; + fpar->argN_ = format_item_t::argN_no_posit; // if no positional-directive + + bool in_brackets=false; + if(buf[i1]==os.widen('|')) + { + in_brackets=true; + if( ++i1 >= buf.size() ) { + maybe_throw_exception(exceptions); + return false; + } + } + + // the flag '0' would be picked as a digit for argument order, but here it's a flag : + if(buf[i1]==os.widen('0')) + goto parse_flags; + + // handle argument order (%2$d) or possibly width specification: %2d + i0 = i1; // save position before digits + while (i1 < buf.size() && wrap_isdigit(buf[i1], os)) + ++i1; + if (i1!=i0) + { + if( i1 >= buf.size() ) { + maybe_throw_exception(exceptions); + return false; + } + int n=str2int(buf,i0, os, int(0) ); + + // %N% case : this is already the end of the directive + if( buf[i1] == os.widen('%') ) + { + fpar->argN_ = n-1; + ++i1; + if( in_brackets) + maybe_throw_exception(exceptions); + // but don't return. maybe "%" was used in lieu of '$', so we go on. + else return true; + } + + if ( buf[i1]==os.widen('$') ) + { + fpar->argN_ = n-1; + ++i1; + } + else + { + // non-positionnal directive + fpar->ref_state_.width_ = n; + fpar->argN_ = format_item_t::argN_no_posit; + goto parse_precision; + } + } + + parse_flags: + // handle flags + while ( i1 <buf.size()) // as long as char is one of + - = # 0 l h or ' ' + { + // misc switches + switch (os.narrow(buf[i1], 0)) + { + case '\'' : break; // no effect yet. (painful to implement) + case 'l': + case 'h': // short/long modifier : for printf-comaptibility (no action needed) + break; + case '-': + fpar->ref_state_.flags_ |= std::ios_base::left; + break; + case '=': + fpar->pad_scheme_ |= format_item_t::centered; + break; + case ' ': + fpar->pad_scheme_ |= format_item_t::spacepad; + break; + case '+': + fpar->ref_state_.flags_ |= std::ios_base::showpos; + break; + case '0': + fpar->pad_scheme_ |= format_item_t::zeropad; + // need to know alignment before really setting flags, + // so just add 'zeropad' flag for now, it will be processed later. + break; + case '#': + fpar->ref_state_.flags_ |= std::ios_base::showpoint | std::ios_base::showbase; + break; + default: + goto parse_width; + } + ++i1; + } // loop on flag. + if( i1>=buf.size()) { + maybe_throw_exception(exceptions); + return true; + } + + parse_width: + // handle width spec + skip_asterisk(buf, &i1, os); // skips 'asterisk fields' : *, or *N$ + i0 = i1; // save position before digits + while (i1<buf.size() && wrap_isdigit(buf[i1], os)) + i1++; + + if (i1!=i0) + { fpar->ref_state_.width_ = str2int( buf,i0, os, std::streamsize(0) ); } + + parse_precision: + if( i1>=buf.size()) { + maybe_throw_exception(exceptions); + return true; + } + // handle precision spec + if (buf[i1]==os.widen('.')) + { + ++i1; + skip_asterisk(buf, &i1, os); + i0 = i1; // save position before digits + while (i1<buf.size() && wrap_isdigit(buf[i1], os)) + ++i1; + + if(i1==i0) + fpar->ref_state_.precision_ = 0; + else + fpar->ref_state_.precision_ = str2int(buf,i0, os, std::streamsize(0) ); + } + + // handle formatting-type flags : + while( i1<buf.size() && + ( buf[i1]==os.widen('l') || buf[i1]==os.widen('L') || buf[i1]==os.widen('h')) ) + ++i1; + if( i1>=buf.size()) { + maybe_throw_exception(exceptions); + return true; + } + + if( in_brackets && buf[i1]==os.widen('|') ) + { + ++i1; + return true; + } + switch (os.narrow(buf[i1], 0) ) + { + case 'X': + fpar->ref_state_.flags_ |= std::ios_base::uppercase; + case 'p': // pointer => set hex. + case 'x': + fpar->ref_state_.flags_ &= ~std::ios_base::basefield; + fpar->ref_state_.flags_ |= std::ios_base::hex; + break; + + case 'o': + fpar->ref_state_.flags_ &= ~std::ios_base::basefield; + fpar->ref_state_.flags_ |= std::ios_base::oct; + break; + + case 'E': + fpar->ref_state_.flags_ |= std::ios_base::uppercase; + case 'e': + fpar->ref_state_.flags_ &= ~std::ios_base::floatfield; + fpar->ref_state_.flags_ |= std::ios_base::scientific; + + fpar->ref_state_.flags_ &= ~std::ios_base::basefield; + fpar->ref_state_.flags_ |= std::ios_base::dec; + break; + + case 'f': + fpar->ref_state_.flags_ &= ~std::ios_base::floatfield; + fpar->ref_state_.flags_ |= std::ios_base::fixed; + case 'u': + case 'd': + case 'i': + fpar->ref_state_.flags_ &= ~std::ios_base::basefield; + fpar->ref_state_.flags_ |= std::ios_base::dec; + break; + + case 'T': + ++i1; + if( i1 >= buf.size()) + maybe_throw_exception(exceptions); + else + fpar->ref_state_.fill_ = buf[i1]; + fpar->pad_scheme_ |= format_item_t::tabulation; + fpar->argN_ = format_item_t::argN_tabulation; + break; + case 't': + fpar->ref_state_.fill_ = os.widen(' '); + fpar->pad_scheme_ |= format_item_t::tabulation; + fpar->argN_ = format_item_t::argN_tabulation; + break; + + case 'G': + fpar->ref_state_.flags_ |= std::ios_base::uppercase; + break; + case 'g': // 'g' conversion is default for floats. + fpar->ref_state_.flags_ &= ~std::ios_base::basefield; + fpar->ref_state_.flags_ |= std::ios_base::dec; + + // CLEAR all floatield flags, so stream will CHOOSE + fpar->ref_state_.flags_ &= ~std::ios_base::floatfield; + break; + + case 'C': + case 'c': + fpar->truncate_ = 1; + break; + case 'S': + case 's': + fpar->truncate_ = fpar->ref_state_.precision_; + fpar->ref_state_.precision_ = -1; + break; + case 'n' : + fpar->argN_ = format_item_t::argN_ignored; + break; + default: + maybe_throw_exception(exceptions); + } + ++i1; + + if( in_brackets ) + { + if( i1<buf.size() && buf[i1]==os.widen('|') ) + { + ++i1; + return true; + } + else maybe_throw_exception(exceptions); + } + return true; + } + +} // detail namespace +} // io namespace + + +// ----------------------------------------------- +// format :: parse(..) + +template<class Ch, class Traits> +void basic_format<Ch, Traits> ::parse(const string_t & buf) + // parse the format-string +{ + using namespace std; + const Ch arg_mark = oss_.widen('%'); + bool ordered_args=true; + int max_argN=-1; + typename string_t::size_type i1=0; + int num_items=0; + + // A: find upper_bound on num_items and allocates arrays + i1=0; + while( (i1=buf.find(arg_mark,i1)) != string::npos ) + { + if( i1+1 >= buf.size() ) { + if(exceptions() & io::bad_format_string_bit) + boost::throw_exception(io::bad_format_string()); // must not end in "bla bla %" + else break; // stop there, ignore last '%' + } + if(buf[i1+1] == buf[i1] ) { i1+=2; continue; } // escaped "%%" / "##" + ++i1; + + // in case of %N% directives, dont count it double (wastes allocations..) : + while(i1 < buf.size() && io::detail::wrap_isdigit(buf[i1],oss_)) ++i1; + if( i1 < buf.size() && buf[i1] == arg_mark ) ++ i1; + + ++num_items; + } + items_.assign( num_items, format_item_t() ); + + // B: Now the real parsing of the format string : + num_items=0; + i1 = 0; + typename string_t::size_type i0 = i1; + bool special_things=false; + int cur_it=0; + while( (i1=buf.find(arg_mark,i1)) != string::npos ) + { + string_t & piece = (cur_it==0) ? prefix_ : items_[cur_it-1].appendix_; + + if( buf[i1+1] == buf[i1] ) // escaped mark, '%%' + { + piece += buf.substr(i0, i1-i0) + buf[i1]; + i1+=2; i0=i1; + continue; + } + BOOST_ASSERT( static_cast<unsigned int>(cur_it) < items_.size() || cur_it==0); + + if(i1!=i0) piece += buf.substr(i0, i1-i0); + ++i1; + + bool parse_ok; + parse_ok = io::detail::parse_printf_directive(buf, &i1, &items_[cur_it], oss_, exceptions()); + if( ! parse_ok ) continue; // the directive will be printed verbatim + + i0=i1; + items_[cur_it].compute_states(); // process complex options, like zeropad, into stream params. + + int argN=items_[cur_it].argN_; + if(argN == format_item_t::argN_ignored) + continue; + if(argN ==format_item_t::argN_no_posit) + ordered_args=false; + else if(argN == format_item_t::argN_tabulation) special_things=true; + else if(argN > max_argN) max_argN = argN; + ++num_items; + ++cur_it; + } // loop on %'s + BOOST_ASSERT(cur_it == num_items); + + // store the final piece of string + string_t & piece = (cur_it==0) ? prefix_ : items_[cur_it-1].appendix_; + piece += buf.substr(i0); + + if( !ordered_args) + { + if(max_argN >= 0 ) // dont mix positional with non-positionnal directives + { + if(exceptions() & io::bad_format_string_bit) + boost::throw_exception(io::bad_format_string()); + // else do nothing. => positionnal arguments are processed as non-positionnal + } + // set things like it would have been with positional directives : + int non_ordered_items = 0; + for(int i=0; i< num_items; ++i) + if(items_[i].argN_ == format_item_t::argN_no_posit) + { + items_[i].argN_ = non_ordered_items; + ++non_ordered_items; + } + max_argN = non_ordered_items-1; + } + + // C: set some member data : + items_.resize(num_items); + + if(special_things) style_ |= special_needs; + num_args_ = max_argN + 1; + if(ordered_args) style_ |= ordered; + else style_ &= ~ordered; +} + +} // namespace boost + + +#endif // BOOST_FORMAT_PARSING_HPP |