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Diffstat (limited to 'src/boost/format/internals.hpp')
| -rw-r--r-- | src/boost/format/internals.hpp | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/src/boost/format/internals.hpp b/src/boost/format/internals.hpp deleted file mode 100644 index d25eb4c86..000000000 --- a/src/boost/format/internals.hpp +++ /dev/null @@ -1,167 +0,0 @@ -// -*- 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 - -struct stream_format_state -{ - typedef std::ios basic_ios; - - std::streamsize width_; - std::streamsize precision_; - char fill_; - std::ios::fmtflags flags_; - - stream_format_state() : width_(-1), precision_(-1), fill_(0), flags_(std::ios::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<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 - -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 ios basic_ios; - typedef detail::stream_format_state stream_format_state; - typedef std::string string_t; - typedef BOOST_IO_STD ostringstream 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:: ------------------------------------------- -inline -void stream_format_state::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_); -} - -inline -void stream_format_state::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 T> inline -void apply_manip_body( stream_format_state& self, - T manipulator) - // modify our params according to the manipulator -{ - BOOST_IO_STD stringstream ss; - self.apply_on( ss ); - ss << manipulator; - self.set_by_stream( ss ); -} - -inline -void stream_format_state::reset() - // set our params to standard's default state -{ - width_=-1; precision_=-1; fill_=0; - flags_ = std::ios::dec; -} - - -// --- format_items:: ------------------------------------------- -inline -void format_item::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::left) - { - pad_scheme_ = pad_scheme_ & (~zeropad); // ignore zeropad in left alignment - } - else - { - ref_state_.fill_='0'; - ref_state_.flags_ |= std::ios::internal; - } - } - state_ = ref_state_; -} - - -} } } // namespaces boost :: io :: detail - - -#endif // BOOST_FORMAT_INTERNALS_HPP |