@node Texinfo::Convert::Text
@chapter Texinfo::Convert::Text

@menu
* Texinfo@asis{::}Convert@asis{::}Text NAME::
* Texinfo@asis{::}Convert@asis{::}Text SYNOPSIS::
* Texinfo@asis{::}Convert@asis{::}Text DESCRIPTION::
* Texinfo@asis{::}Convert@asis{::}Text METHODS::
* Texinfo@asis{::}Convert@asis{::}Text AUTHOR::
@end menu

@node Texinfo::Convert::Text NAME
@section NAME

Texinfo::Convert::Text - Convert Texinfo tree to simple text

@node Texinfo::Convert::Text SYNOPSIS
@section SYNOPSIS

@verbatim
  use Texinfo::Convert::Text qw(convert ascii_accent text_accents);

  my $result = convert($tree);
  my $result_encoded = convert($tree, 
             {'enabled_encoding' => 'utf-8'});
  my $result_converter = convert($tree,
             {'converter' => $converter});

  my $result_accent_text = ascii_accent('e', $accent_command);
  my $accents_text = text_accents($accents, 'utf-8');
@end verbatim

@node Texinfo::Convert::Text DESCRIPTION
@section DESCRIPTION

Texinfo::Convert::Text is a simple backend that converts a Texinfo tree
to simple text.  It is used for some command argument expansion in 
@code{Texinfo::Parser}, for instance the file names, or encoding names.
The converter is very simple, and, in the default case, cannot handle 
output strings translation or error handling.

@node Texinfo::Convert::Text METHODS
@section METHODS

@table @asis
@item $result = convert($tree, $options)
@anchor{Texinfo::Convert::Text $result = convert($tree@comma{} $options)}

Convert a Texinfo tree to simple text.  @emph{$options} is a hash reference of 
options.  The converter is very simple, and has no internal state besides
the options.  It cannot handle as is output strings translation or error 
storing.

If the @emph{converter} option is set, some additional features may be available
for the conversion of some @@-commands, like output strings translation or
error reporting.

The following options may be set:

@table @asis
@item enabled_encoding
@anchor{Texinfo::Convert::Text enabled_encoding}

If set, the value is considered to be the encoding name texinfo accented
letters should be converted to.  This option corresponds to the 
@code{--enable-encoding} option, or the @code{ENABLE_ENCODING} customization 
variable.

@item sc
@anchor{Texinfo::Convert::Text sc}

If set, the text is upper-cased.

@item code
@anchor{Texinfo::Convert::Text code}

If set the text is in code style.  (mostly --, ---, '' and `` are kept as 
is).

@item NUMBER_SECTIONS
@anchor{Texinfo::Convert::Text NUMBER_SECTIONS}

If set, sections are numbered when output.

@item sort_string
@anchor{Texinfo::Convert::Text sort_string}

A somehow internal option to convert to text more suitable for alphabetical
sorting rather than presentation.

@item converter
@anchor{Texinfo::Convert::Text converter}

If this converter object is passed to the function, some features of this
object may be used during conversion.  Mostly error reporting and strings
translation, as the converter object is also supposed to be a 
@ref{Texinfo::Report NAME} objet.  See also @ref{Texinfo::Convert::Converter NAME}.

@item expanded_formats_hash
@anchor{Texinfo::Convert::Text expanded_formats_hash}

A reference on a hash.  The keys should be format names (like @code{html}, 
@code{tex}), and if the corresponding  value is set, the format is expanded.

@end table

@item $result_accent_text = ascii_accent($text, $accent_command)
@anchor{Texinfo::Convert::Text $result_accent_text = ascii_accent($text@comma{} $accent_command)}

@emph{$text} is the text appearing within an accent command.  @emph{$accent_command}
should be a Texinfo tree element corresponding to an accent command taking
an argument.  The function returns a transliteration of the accented
character.

@item $result_accent_text = ascii_accent_fallback($converter, $text, $accent_command)
@anchor{Texinfo::Convert::Text $result_accent_text = ascii_accent_fallback($converter@comma{} $text@comma{} $accent_command)}

Same as @code{ascii_accent} but  with an additional first argument
converter, which is in ignored, but needed if this function is to 
be in argument of functions that need a fallback for accents
conversion.

@item $accents_text = text_accents($accents, $encoding, $set_case)
@anchor{Texinfo::Convert::Text $accents_text = text_accents($accents@comma{} $encoding@comma{} $set_case)}

@emph{$accents} is an accent command that may contain other nested accent 
commands.  The function will format the whole stack of nested accent 
commands and the innermost text.  If @emph{$encoding} is set, the formatted
text is converted to this encoding as much as possible instead of being
converted as simple ascii.  If @emph{$set_case} is positive, the result
is meant to be upper-cased, if it is negative, the result is to be 
lower-cased.

@end table

@node Texinfo::Convert::Text AUTHOR
@section AUTHOR

Patrice Dumas, <pertusus@@free.fr>

