-// -*- 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
// ----------------------------------------------------------------------------
+// Copyright Samuel Krempp 2003. Use, modification, and distribution are
+// subject to the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// See http://www.boost.org/libs/format for library home page
+
+
+// ----------------------------------------------------------------------------
#ifndef BOOST_FORMAT_IMPLEMENTATION_HPP
#define BOOST_FORMAT_IMPLEMENTATION_HPP
+#include <boost/config.hpp>
#include <boost/throw_exception.hpp>
#include <boost/assert.hpp>
#include <boost/format/format_class.hpp>
+#include <algorithm> // std::swap
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);
+// --- basic_format implementation -----------------------------------------//
+
+ template< class Ch, class Tr, class Alloc>
+ basic_format<Ch, Tr, Alloc>:: basic_format(const Ch* s)
+ : style_(0), cur_arg_(0), num_args_(0), dumped_(false),
+ exceptions_(io::all_error_bits)
+ {
+ if( s)
+ parse( s );
+ }
+
+#if !defined(BOOST_NO_STD_LOCALE)
+ template< class Ch, class Tr, class Alloc>
+ basic_format<Ch, Tr, Alloc>:: basic_format(const Ch* s, const std::locale & loc)
+ : style_(0), cur_arg_(0), num_args_(0), dumped_(false),
+ exceptions_(io::all_error_bits), loc_(loc)
+ {
+ if(s) parse( s );
}
- 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)
+
+ template< class Ch, class Tr, class Alloc>
+ basic_format<Ch, Tr, Alloc>:: basic_format(const string_type& s, const std::locale & loc)
+ : style_(0), cur_arg_(0), num_args_(0), dumped_(false),
+ exceptions_(io::all_error_bits), loc_(loc)
{
- 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_ );
+ parse(s);
+ }
+#endif // ! BOOST_NO_STD_LOCALE
+ template< class Ch, class Tr, class Alloc>
+ io::detail::locale_t basic_format<Ch, Tr, Alloc>::
+ getloc() const {
+ return loc_ ? loc_.get() : io::detail::locale_t();
+ }
+
+ template< class Ch, class Tr, class Alloc>
+ basic_format<Ch, Tr, Alloc>:: basic_format(const string_type& s)
+ : style_(0), cur_arg_(0), num_args_(0), dumped_(false),
+ exceptions_(io::all_error_bits)
+ {
+ parse(s);
+ }
+
+ template< class Ch, class Tr, class Alloc> // just don't copy the buf_ member
+ basic_format<Ch, Tr, Alloc>:: basic_format(const basic_format& x)
+ : items_(x.items_), bound_(x.bound_), style_(x.style_),
+ cur_arg_(x.cur_arg_), num_args_(x.num_args_), dumped_(x.dumped_),
+ prefix_(x.prefix_), exceptions_(x.exceptions_), loc_(x.loc_)
+ {
+ }
+
+ template< class Ch, class Tr, class Alloc> // just don't copy the buf_ member
+ basic_format<Ch, Tr, Alloc>& basic_format<Ch, Tr, Alloc>::
+ operator= (const basic_format& x) {
+ if(this == &x)
+ return *this;
+ (basic_format<Ch, Tr, Alloc>(x)).swap(*this);
+ return *this;
+ }
+ template< class Ch, class Tr, class Alloc>
+ void basic_format<Ch, Tr, Alloc>::
+ swap (basic_format & x) {
+ std::swap(exceptions_, x.exceptions_);
+ std::swap(style_, x.style_);
+ std::swap(cur_arg_, x.cur_arg_);
+ std::swap(num_args_, x.num_args_);
+ std::swap(dumped_, x.dumped_);
+
+ items_.swap(x.items_);
+ prefix_.swap(x.prefix_);
+ bound_.swap(x.bound_);
+ }
+
+ template< class Ch, class Tr, class Alloc>
+ unsigned char basic_format<Ch,Tr, Alloc>:: exceptions() const {
+ return exceptions_;
+ }
+
+ template< class Ch, class Tr, class Alloc>
+ unsigned char basic_format<Ch,Tr, Alloc>:: exceptions(unsigned char newexcept) {
+ unsigned char swp = exceptions_;
+ exceptions_ = newexcept;
+ return swp;
+ }
+
+ template<class Ch, class Tr, class Alloc>
+ void basic_format<Ch, Tr, Alloc>::
+ make_or_reuse_data (std::size_t nbitems) {
+#if !defined(BOOST_NO_STD_LOCALE)
+ Ch fill = ( BOOST_USE_FACET(std::ctype<Ch>, getloc()) ). widen(' ');
+#else
+ Ch fill = ' ';
+#endif
+ if(items_.size() == 0)
+ items_.assign( nbitems, format_item_t(fill) );
+ else {
+ if(nbitems>items_.size())
+ items_.resize(nbitems, format_item_t(fill));
+ bound_.resize(0);
+ for(std::size_t i=0; i < nbitems; ++i)
+ items_[i].reset(fill); // strings are resized, instead of reallocated
+ }
+ prefix_.resize(0);
+ }
+
+ template< class Ch, class Tr, class Alloc>
+ basic_format<Ch,Tr, Alloc>& basic_format<Ch,Tr, Alloc>::
+ clear () {
+ // empty the string buffers (except bound arguments)
+ // 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) {
+ // clear converted strings only if the corresponding argument is not bound :
+ if( bound_.size()==0 || items_[i].argN_<0 || !bound_[ items_[i].argN_ ] )
+ items_[i].res_.resize(0);
+ }
+ cur_arg_=0; dumped_=false;
+ // maybe first arg is bound:
+ if(bound_.size() != 0) {
+ for(; cur_arg_ < num_args_ && bound_[cur_arg_]; ++cur_arg_)
+ {}
+ }
+ return *this;
+ }
+
+ template< class Ch, class Tr, class Alloc>
+ basic_format<Ch,Tr, Alloc>& basic_format<Ch,Tr, Alloc>::
+ clear_binds () {
+ // remove all binds, then clear()
+ bound_.resize(0);
+ clear();
+ return *this;
+ }
+
+ template< class Ch, class Tr, class Alloc>
+ basic_format<Ch,Tr, Alloc>& basic_format<Ch,Tr, Alloc>::
+ clear_bind (int argN) {
+ // remove the bind of ONE argument then 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(argN, 1, num_args_+1 ) );
+ else return *this;
+ }
+ bound_[argN-1]=false;
+ clear();
+ return *this;
+ }
+
+ template< class Ch, class Tr, class Alloc>
+ int basic_format<Ch,Tr, Alloc>::
+ bound_args() const {
+ if(bound_.size()==0)
+ return 0;
+ int n=0;
+ for(int i=0; i<num_args_ ; ++i)
+ if(bound_[i])
+ ++n;
+ return n;
+ }
+
+ template< class Ch, class Tr, class Alloc>
+ int basic_format<Ch,Tr, Alloc>::
+ fed_args() const {
+ if(bound_.size()==0)
+ return cur_arg_;
+ int n=0;
+ for(int i=0; i<cur_arg_ ; ++i)
+ if(!bound_[i])
+ ++n;
+ return n;
+ }
+
+ template< class Ch, class Tr, class Alloc>
+ int basic_format<Ch,Tr, Alloc>::
+ cur_arg() const {
+ return cur_arg_+1; }
+
+ template< class Ch, class Tr, class Alloc>
+ int basic_format<Ch,Tr, Alloc>::
+ remaining_args() const {
+ if(bound_.size()==0)
+ return num_args_-cur_arg_;
+ int n=0;
+ for(int i=cur_arg_; i<num_args_ ; ++i)
+ if(!bound_[i])
+ ++n;
+ return n;
+ }
+
+ template< class Ch, class Tr, class Alloc>
+ typename basic_format<Ch, Tr, Alloc>::string_type
+ basic_format<Ch,Tr, Alloc>::
+ str () const {
+ if(items_.size()==0)
+ return prefix_;
+ if( cur_arg_ < num_args_)
+ if( exceptions() & io::too_few_args_bit )
+ // not enough variables supplied
+ boost::throw_exception(io::too_few_args(cur_arg_, num_args_));
+
+ unsigned long i;
+ string_type res;
+ res.reserve(size());
+ 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);
+ if( static_cast<size_type>(item.fmtstate_.width_) > res.size() )
+ res.append( static_cast<size_type>(item.fmtstate_.width_) - res.size(),
+ item.fmtstate_.fill_ );
+ }
+ res += item.appendix_;
+ }
+ dumped_=true;
+ return res;
+ }
+ template< class Ch, class Tr, class Alloc>
+ typename std::basic_string<Ch, Tr, Alloc>::size_type basic_format<Ch,Tr, Alloc>::
+ size () const {
+#ifdef BOOST_MSVC
+ // If std::min<unsigned> or std::max<unsigned> are already instantiated
+ // at this point then we get a blizzard of warning messages when we call
+ // those templates with std::size_t as arguments. Weird and very annoyning...
+#pragma warning(push)
+#pragma warning(disable:4267)
+#endif
+ BOOST_USING_STD_MAX();
+ size_type sz = prefix_.size();
+ unsigned long i;
+ for(i=0; i < items_.size(); ++i) {
+ const format_item_t& item = items_[i];
+ sz += item.res_.size();
+ if( item.argN_ == format_item_t::argN_tabulation)
+ sz = max BOOST_PREVENT_MACRO_SUBSTITUTION (sz,
+ static_cast<size_type>(item.fmtstate_.width_) );
+ sz += item.appendix_.size();
+ }
+ return sz;
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
}
- 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;
+ template<class Ch, class Tr, class Alloc, class T>
+ basic_format<Ch, Tr, Alloc>&
+ bind_arg_body (basic_format<Ch, Tr, Alloc>& 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(argN, 1, self.num_args_+1 ) );
+ 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 an unbound arg :
+ BOOST_ASSERT( self.cur_arg_ >= self.num_args_ || ! self.bound_[self.cur_arg_]);
+ 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
+ template<class Ch, class Tr, class Alloc, class T> basic_format<Ch, Tr, Alloc>&
+ modify_item_body (basic_format<Ch, Tr, Alloc>& self, int itemN, T manipulator) {
+ // applies a manipulator to the format_item describing a given directive.
+ // this is a permanent change, clear or reset 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(itemN, 1, static_cast<int>(self.items_.size()) ));
+ else return self;
+ }
+ self.items_[itemN-1].fmtstate_. template apply_manip<T> ( manipulator );
+ return self;
+ }
+} // namespace detail
} // namespace io
-
} // namespace boost
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