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-rw-r--r--src/boost/format/format_implementation.cc256
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diff --git a/src/boost/format/format_implementation.cc b/src/boost/format/format_implementation.cc
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-// -*- 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.hpp>
-
-namespace boost {
-
-// -------- format:: -------------------------------------------
-basic_format::basic_format(const char* 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
-basic_format::basic_format(const char* 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 );
-}
-
-basic_format::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
-
-basic_format::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);
-}
-
-basic_format:: 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_);
-}
-
-basic_format& basic_format::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;
-}
-
-
-unsigned char basic_format::exceptions() const
-{
- return exceptions_;
-}
-
-unsigned char basic_format::exceptions(unsigned char newexcept)
-{
- unsigned char swp = exceptions_;
- exceptions_ = newexcept;
- return swp;
-}
-
-
-basic_format& basic_format ::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;
-}
-
-basic_format& basic_format ::clear_binds()
- // cancel all bindings, and clear()
-{
- bound_.resize(0);
- clear();
- return *this;
-}
-
-basic_format& basic_format::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;
-}
-
-
-
-std::string basic_format::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 T>
-basic_format& bind_arg_body( basic_format& 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 T>
-basic_format& modify_item_body( basic_format& 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
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