This is texi2html.info, produced by makeinfo version 4.5 from texi2html.texi. Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. Portions of `texi2html' Copyright (C) 1999, 2000 Lionel Cons Copyright (C) 1999, 2000 Karl Berry Copyright (C) 1999, 2000 Olaf Bachmann Copyright (C) 2002, 2003 Patrice Dumas Copyright (C) 2001, 2002, 2003 Derek Price Copyright (C) many others. Portions of this manual Copyright (C) 1999, 2000 Karl Heinz Marbaise (manual) Copyright (C) 2003 Patrice Dumas (manual) Copyright (C) 2003 Derek Price (manual) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by the Free Software Foundation. INFO-DIR-SECTION Texinfo documentation system START-INFO-DIR-ENTRY * Texi2HTML: (texi2html). Texinfo to HTML Converter. END-INFO-DIR-ENTRY This file, last updated 1 February 2005, documents the `texi2html' script which converts Texinfo (http://www.texinfo.org) into HTML (http://w3c.org). This edition is for `texi2html' version 1.76. Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. Portions of `texi2html' Copyright (C) 1999, 2000 Lionel Cons Copyright (C) 1999, 2000 Karl Berry Copyright (C) 1999, 2000 Olaf Bachmann Copyright (C) 2002, 2003 Patrice Dumas Copyright (C) 2001, 2002, 2003 Derek Price Copyright (C) many others. Portions of this manual Copyright (C) 1999, 2000 Karl Heinz Marbaise (manual) Copyright (C) 2003 Patrice Dumas (manual) Copyright (C) 2003 Derek Price (manual) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by the Free Software Foundation. File: texi2html.info, Node: Customizing header, Next: Customizing section, Prev: css, Up: Changing the page layout Customizing the page header =========================== It is possible to add lines to the text within the `
' HTML elements, by defining the variable `$EXTRA_HEAD'. Similarly it is possible to add text just after the `' element with the variable `$AFTER_BODY_OPEN'. These variables are empty by default. The encoding of the texinfo file is defined by `$DOCUMENT_ENCODING' if no `@documentencoding' appears in the document. The default is a `en-ascii' encoding. The encoding of the resulting document is defined by `$ENCODING'. The default is the `$DOCUMENT_ENCODING'. The description of the document may be specified in `$DOCUMENT_DESCRIPTION'. If this variable is undef, the text associated with `@documentdescription' is used, and if there isn't such test a default description is constructed using the document title and the name of the first section of the file. The `' element attributes may be set by defining the variable `$BODYTEXT'. If you want to define that variable dynamically, you should use the `init_out' function reference (*note Output initialization::). The default functions call the function associated with `$print_head_navigation' to format the navigation panel for the page header. Thus you can control parts of the formatting by redefining the function reference. - Function Reference: print_head_navigation $filehandle \@buttons $FILEHANDLE is the opened filehandle the function should write to. \@BUTTONS is an array reference which should hold the specification of the buttons for the navigation panel. If you want even more control, you can have full control over the page header formatting by redefining three function references. The function associated with `$print_page_head' is called for all the pages, and after that, the function associated with `$print_chapter_header' is called if the document is split at chapters, or the function associated with `$print_section_header' is called if the document is split at sections. - Function Reference: print_page_head $filehandle $FILEHANDLE is the opened filehandle the function should write to. This function should print the page head, including the `' element. - Function Reference: print_chapter_header $filehandle $FILEHANDLE is the opened filehandle the function should write to. This function is called if the document is split at chapters, after `print_page_head'. - Function Reference: print_section_header $filehandle $FILEHANDLE is the opened filehandle the function should write to. This function is called if the document is split at sections, after `print_page_head'. File: texi2html.info, Node: Customizing section, Next: Customizing footer, Prev: Customizing header, Up: Changing the page layout Customizing the sections ======================== The functions associated with the following function references are used for the formatting of sections: - Function Reference: print_section $filehandle $first_in_page $previous_is_top $FILEHANDLE is the opened filehandle the function should write to. $FIRST_IN_PAGE is true if this section is the first section in the page. $PREVIOUS_IS_TOP is true if this section is the section following the Top section. This function should print the current section. - Function Reference: end_section $filehandle $last_element_or_before_top $FILEHANDLE is the opened filehandle the function should write to. $LAST_ELEMENT_OR_BEFORE_TOP is true if this section precedes the top element or is the last one in page, or before the special elements. File: texi2html.info, Node: Customizing footer, Next: Special pages, Prev: Customizing section, Up: Changing the page layout Customizing the page footer =========================== It is possible to add text just before the `' element with the variable `$PRE_BODY_CLOSE'. Nothing is added by default. The default functions call the function associated with `$print_foot_navigation' to format the navigation panel for the page footer. Thus you can control parts of the formatting by redefining the function reference. - Function Reference: print_foot_navigation $filehandle \@buttons $FILEHANDLE is the opened filehandle the function should write to. \@BUTTONS is an array reference which should hold the specification of the buttons for the navigation panel. If you want even more control, you can have full control the page footer formatting by redefining three function references. The function associated with `$print_chapter_footer' is called if the document is split at chapters, or the function associated with `$print_section_footer' is called if the document is split at sections. After that the function associated with `$print_page_foot' is called. - Function Reference: print_page_foot $filehandle $FILEHANDLE is the opened filehandle the function should write to. This function should print the page foot, including the `' element. - Function Reference: print_chapter_footer $filehandle $FILEHANDLE is the opened filehandle the function should write to. This function is called if the document is split at chapters, before `print_page_foot'. - Function Reference: print_section_footer $filehandle $FILEHANDLE is the opened filehandle the function should write to. This function is called if the document is split at sections, before `print_page_foot'. File: texi2html.info, Node: Special pages, Next: File names, Prev: Customizing footer, Up: Changing the page layout Special pages formatting ======================== For the special elements, two things must be formatted: the content and the page layout * Menu: * Special pages content:: * Special pages layout:: File: texi2html.info, Node: Special pages content, Next: Special pages layout, Up: Special pages Customizing the content of the special pages -------------------------------------------- * Menu: * Top element text:: * Contents and Overview text:: * Footnotes text:: * About text:: File: texi2html.info, Node: Top element text, Next: Contents and Overview text, Up: Special pages content Top element text formatting ........................... The top element formatting is controlled by three function which also controls the layout of the top element page or section. The associated function references are: - Function Reference: print_Top_header $filehandle $begin_page $FILEHANDLE is the opened filehandle the function should write to. $BEGIN_PAGE is true if the element is the first in a page. This function should begin the Top element. At the time this function is called the top element text hasn't been parsed. - Function Reference: print_Top $filehandle $has_top_heading $FILEHANDLE is the opened filehandle the function should write to. $HAS_TOP_HEADING is true if there is a `@heading' command or `@titlefont' command appearing in the Top element text. This function should be used to format the Top element text and navigation panel. - Function Reference: print_Top_footer $filehandle $end_page $FILEHANDLE is the opened filehandle the function should write to. $END_PAGE is true if the element is the last in a page. This function should end the Top element. File: texi2html.info, Node: Contents and Overview text, Next: Footnotes text, Prev: Top element text, Up: Special pages content Table of contents and Short table of contents ............................................. Several variables may be used to control the formatting of table of contents and short table of contents: `$DO_CONTENTS' If the variable is true a table of contents is done even if there is no `@contents' command. `$DO_SCONTENTS' If the variable is true a short table of contents is done even if there is no `@summarycontents' command. `$BEFORE_OVERVIEW' The variable value is inserted before the short table of contents text. `$AFTER_OVERVIEW' The variable value is inserted after the short table of contents text. `$BEFORE_TOC_LINES' The variable value is inserted before the table of contents text. `$AFTER_TOC_LINES' The variable value is inserted after the table of contents text. `$TOC_LIST_STYLE' This should contain a css style used for the list style if the tables of content are formatted with a list. `$TOC_LIST_ATTRIBUTE' This should contain an attribute text used for the list element if the tables of content are formatted with a list. More control on the table of contents and short table of contents formatting may be achieved by redefining a function with the following associated function reference: - Function Reference: toc_body \@elements \@ELEMENTS is an array reference contining informations about all the elements of the document. Each of the entry of this array is an hash reference which entries correspond with different informations about the element. Interesting keys have the following meaning: `top' true if the element is the top element, `index_page' true if the element is an index page added because of index splitting, `toc_level' level of the element in the table of content. Highest level is 1 for the top element and for chapters, appendix and so on, 2 for section, unnumberedsec and so on... `tocid' label used for reference linking to the element in table of contents, `file' the file containing the element, usefull to do href to that file in case the document is split, `text' text of the element, with section number, `name' text of the element, without section number. This function doesn't return anything but should fill the array corresponding with the `$Texi2HTML::TOC_LINES' and `$Texi2HTML::OVERVIEW' references with the table of contents and short table of contents. File: texi2html.info, Node: Footnotes text, Next: About text, Prev: Contents and Overview text, Up: Special pages content Formatting of footnotes text ............................ The footnotes text is allready formatting when `@footnote' commands are expanded. *Note Footnotes::. File: texi2html.info, Node: About text, Prev: Footnotes text, Up: Special pages content Formatting of about text ........................ The default about element contains an explaination of the buttons used in the document (`@SECTION_BUTTONS', *Note Button specifications::) and an example locating the buttons targets in an example. The formatting of this text may be influenced by the following hashes and variables: `$PRE_ABOUT' `$AFTER_ABOUT' This variable may be a scalar or a function reference. If it is a scalar, the value is used. If this is a function reference it is expanded and the returned text is used. The text is added before or after the main about text. `%BUTTONS_GOTO' The keys of this hash are element labels (*note Element labels::). The value is the text associated with the element label in the about text. The element of the hash are defined dynamically, you should in the `init_out' function reference (*note Output initialization::). `%BUTTONS_EXAMPLE' The keys of this hash are element labels (*note Element labels::). The value is the text associated with the element label in the about example, typically a section number. If this is not enough and you want to control exactly the formatting of the about text, you can redefine the function associated with the following function reference: - Function Reference: $about_text print_about This function should return the about text. File: texi2html.info, Node: Special pages layout, Prev: Special pages content, Up: Special pages Customizing the layout of the special pages ------------------------------------------- The formatting of each of the special pages, or section in case the document is not split, is controlled by a function. The associated function reference is called accordingly: `print_Top' `print_Top_header' `print_Top_footer' Formatting of top element page or section. It is also used for the formatting of the top element text (*note Top element text::). `print_Toc' Formatting of table of contents page or section `print_Overview' Formatting of short table of contents page or section `print_About' Formatting of about (help) page or section `print_Footnotes' Formatting of footnotes section or page in case footnotes are on a separated page or the document isn't split. In the default case, `$print_Top' calls `$print_Top_header' for the header and `$print_Top_footer' for the footer of top element. All the other function call `$print_misc' which in turn calls `$print_misc_header' for the headers and `$print_misc_footer' for the footers. File: texi2html.info, Node: File names, Next: External index files, Prev: Special pages, Up: Changing the page layout Customizing the file names ========================== It is possible to specify the file names with more control than with the command line options (*note Output files::). First the extension may be overrided by the variable `$EXTENSION' value. Two function references enable further customization. One is usefull in case `$NODE_FILES' is true and it is used to customize the node file name itself and is also used to produce a file name with a redirection leading to the node file. - Function Reference: ($node_file $redirection_node_file) node_file_name $node $NODE is a hash reference with the following interesting keys (there are much more keys): `texi' The texinfo node name. `with_section' True if associated with a section. The result is the node file name $NODE_FILE, and the file containing a redirection to the node $REDIRECTION_NODE_FILE. The other is usefull if `$NODE_FILES' isn't true. It is used to customize the file associated with each element. - Function Reference: $file element_file_name $element $is_top $docu_name $ELEMENT is a hash reference with the following interesting keys (there are much more keys): `texi' The texinfo element name. `number' The number associated with a section. `doc_nr' A number incremented whenever a new file should begin, based on how the document is split (*note Splitting output::). `text' The element text. `name' The element text without section number. $IS_TOP is true if the element is considered as the top element. $DOCU_NAME is the basename of the texinfo manual. The result is the element file name. File: texi2html.info, Node: External index files, Prev: File names, Up: Changing the page layout Generation of external files for index entries ============================================== Within the document, `@printindex' commands are expanded as explained in *Note Index list::. In case you want to do something special with index entries, outside of the document, you should first set the variable `$IDX_SUMMARY' true. After that some function reference will be called for each non empty index. For each index there are 3 function references, one called for initialization, one called for each index entry and the last one called for finalazation. - Function Reference: index_summary_file_begin $index_name $is_printed $INDEX_NAME is the two letters name for the index. This function is called for each index appearing in the document, before `index_summary_file_entry'. $IS_PRINTED is true if there is a `@printindex' for that index. - Function Reference: index_summary_file_entry $index_name $entry_text $entry_reference $formatted_entry $texi_entry $entry_element_reference $entry_element_header $is_printed This function is called for each entry of an index. INDEX_NAME is the name of the index. $ENTRY_TEXT is the entry in plain text, $FORMATTED_ENTRY is the index entry formatted, $TEXI_ENTRY is the entry with texinfo commands. $ENTRY_REFERENCE is the reference placed at the index entry place, in the form `file#id'. $ENTRY_ELEMENT_HEADER is the formatted header of the element containing the index entry. ENTRY_ELEMENT_HEADER is the reference to the beginning of the element containing the index entry, in the form `file#id'. $IS_PRINTED is true if there is a `@printindex' for that index. - Function Reference: index_summary_file_end $index_name $is_printed $INDEX_NAME is the two letters name for the index. This function is called for each index appearing in the document, after `index_summary_file_entry'. $IS_PRINTED is true if there is a `@printindex' for that index. File: texi2html.info, Node: Customizing HTML, Next: Internationalization, Prev: Changing the page layout, Up: Top Customizing HTML and text style in init files ********************************************* Some simple customization may be achieved with the redefinition of the variables associated with the command line options. For the description and an explanation of the meaning of these variables, *Note Style options::. Other variables and hash entries can be modified in initialization file to achieve more customization. Lastly, functions references corresponding with functions called from the main program and initialization files may be redefined. * Menu: * Three contexts:: there are three different contexts for command expansion: normal text, preformatted text and strings. * Commands without argument:: * Style and accent commands:: * Anchors images and spaces:: Formatting of `@anchor', `@image', `@sp', `@acronym', `@abbr' * Text:: Some characters are processed specially * Strings:: `texi2html' write some strings in the output different for each languages * References:: * Alignement commands:: `@center', `@flushleft'... * Paragraph and preformatted region:: * Complex formats:: `@example', `@display'... * Lists tables:: * Definitions:: * Headings:: * Special regions:: `@verbatim', `@cartouche', `@quotation' * Menus:: * Indices:: * Floats and lists of floats:: `@float' and `@listoffloats' * Footnotes:: * Other and unknown commands:: You can handle specifically other commands File: texi2html.info, Node: Three contexts, Next: Commands without argument, Up: Customizing HTML Three contexts for expansions: preformatted, normal and string ============================================================== There are three contexts of interest, one is the normal context, the other is a special context, called the "preformatted" context and the last is the string context. The preformatted context occurs when the spacing between words is kept. This is the case, for example, in `@display' or `@example' regions, and in menu comments (*note Menus::). The preformatted regions are usually rendered in `' elements in HTML. The string context occurs when rendering strings without formatting elements, in comments or titles for example. File: texi2html.info, Node: Commands without argument, Next: Style and accent commands, Prev: Three contexts, Up: Customizing HTML Customizing the formatting of commands without argument ======================================================= This includes the commands whose name is a nonletter character like `@@', the commands with lettered characters and braces but whose braces should be empty, like `@TeX{}', or some commands associated with accentted letters like `@AA{}'. If there happens to be something within the braces, it is put after the command, thus @TeX{something} leads to the same than @TeX{} something Each of these categories of commands have three associated hashes, one for normal context, the other for preformatted context and the last in strings. The keys of the hashes are the command names, the associated value is the text replacing the command. The hashes are: command type normal text preformatted text string one nonlettered character `%simple_map' `%simple_map_pre' `%simple_map_texi' nothing in braces `%things_map' `%pre_map' `%texi_map' To change the HTML resulting from these constructs, just change the value. For example, if you want `' to be outputted for `@-' in normal and preformatted context, write in your init file: $simple_map{'-'} = ''; $simple_map_pre{'-'} = ''; File: texi2html.info, Node: Style and accent commands, Next: Anchors images and spaces, Prev: Commands without argument, Up: Customizing HTML Customizing accent, style and other simple commands =================================================== The formatting of the HTML produced by style and indicatric commands (`@tt', `@code', `@email', `@titlefont'), the accentuation related commands taking argument (`@'', `@udotaccent', `@dotless') and miscalleneous commands (`@email', `@verb', `@w', `@uref', `@math', `@asis') is controlled by two hash in the default case, `%style_map' for normal context, `%style_map_pre' for preformatted context and `%style_map_texi' in string context. The key of the hashes are the command names. There are two possibilities for the values corresponding with two interfaces. The values may be strings or hash references, and you can chose the interface depending on the one you prefer. The interface with hash reference is a bit more flexible but might also be regarded as more complex. If you don't like either of these interfaces you can define your own. Some remarks are in order: * The nonlettered accent commands which following character is considered to be the argument (like in `@`a') should be keys of the hash `%accent_map' hash, even if no value is associated. * `@math' is handled differently if LaTeX2HTML is used. * Menu: * Hash reference interface:: * String interface:: * Define your own interface:: File: texi2html.info, Node: Hash reference interface, Next: String interface, Up: Style and accent commands An interface for commands formatting with a hash reference ---------------------------------------------------------- The key of the hashes are the command names. The value determine how the command argument is formatted. This value is a reference on a hash. In this hash each key corresponds with a type of information for the formatting, and the value is the corresponding information. For example, in $style_map{'command'} = { 'args' => ['code'], 'attribute' => 'code'}; the arguments for `@command' are interpreted as specified by the values associated with the `args' key while the attribute associated with that command is `code'. The following keys in the hashes associated with each command have the following meaning: `args' The value associated is a reference on an array. Each element of the array defines how the arguments (separated by `,' in the texinfo code) for the @-command should be formatted. The possibilities are `normal' for normal text, `code' for text with `---', `--', `''' and ```' kept as is, `keep' if the texinfo should be kept as is, without interpretation of the @-commands. For example, we have $style_map{'email'}->{'args'} = ['code', 'normal']; because `---', `--', `''' and ```' should be kept as is in the first argument of `@email'. The default is `['normal']'. `attribute' If the associated value is a word, it is considered to be an HTML element name, and the argument is enclosed between the element opening and the element closing. For example, if the value is `elem', the resulting HTML is `ARG '. If the text is a word followed by some text, the word and is interpreted as above, and the text is considered to be the attributes text of the element. Thus `elem class="elem"' leads to `ARG '. This works only if there is only one argument. `begin' The associated value is added in front of the text. `begin' The associated value is added after the text. `quotes' If the corresponding value is true, the result is enclosed in quotes `$OPEN_QUOTE_SYMBOL' and `$CLOSE_QUOTE_SYMBOL', with defaults ``' and `''. `function' The corresponding value should be a function reference. The corresponding function is called with the following arguments: `$command' The @-command name `$args' A reference on an array containing the arguments of the @-command. `$style_stack' A reference on an array containing the name of the @-commands containing the @-command being formatted. `$state' A reference on a hash containing a lot of informations about the context of the @-command. `$line_nr' An opaque structure containing the information about the line number of the @-command. It can be used to call `main::echo_error' or `main::echo_warning' with first argument a message, and second argument `$line_nr'. File: texi2html.info, Node: String interface, Next: Define your own interface, Prev: Hash reference interface, Up: Style and accent commands An interface for commands formatting with a string -------------------------------------------------- The keys of the hashes are the command names. The value determine how the command argument is formatted. If the value begins with `"', the result is enclosed in quotes `$OPEN_QUOTE_SYMBOL' and `$CLOSE_QUOTE_SYMBOL', with defaults ``' and `''. The command argument is allready formatted as HTML. The remaining of the value text (or the value text if there were no `"') is interpreted as follow: * If the text is empty the argument of the command is left as is. * If the text is a `&' followed by a name, like `&function', the name is considered to be a function name, and this function is called to format the argument of the command. The first argument of the function is the command name, the second is the command argument. For example, if the value associated with the (fictituous) command `@foo' is `&my_func' and we have: sub my_func { my @args = split /,\s*/ $_[1]; return "$_[0]: $args[0]" if ($args[1] = 1); return "$args[0]"; } The result of @foo{truc, 1} @foo{truc, bidule} will be foo: truc truc * If the text is a word, it is considered to be an HTML element name, and the argument is enclosed between the element opening and the element closing. For example, if the value is `elem', the resulting HTML is `ARG '. Similarly `"quoted' leads to ``ARG ''. * If the text is a word followed by some text, the word and is interpreted as above, and the text is considered to be the attributes text of the element. Thus `elem class="elem"' leads to `ARG '. File: texi2html.info, Node: Define your own interface, Prev: String interface, Up: Style and accent commands Defining the style and indicatric commands interface ---------------------------------------------------- If you don't like this scheme, it is possible to change how those commands are processed by redefining the following function reference: - Function Reference: $resulting_text style $style $command $text $args $no_close $no_open $line_nr $state $style_stack $COMMAND is the @-command, $STYLE is the value associated with the $COMMAND in the `%style_map', `%style_map_pre' or `%style_map_texi' hashes. The $TEXT is the text appearing within the @-command braces. ARGS is a reference on an array contening the command arguments formatted according to the same conventions than with the reference hash style (provided the value associated with the @-command is a hash reference with a $ARG key as described in *Note Reference hash args::). If $TEXT is split in paragraphs each paragraph is passed through the function, and $NO_CLOSE is true if it is not the last paragraph, while $NO_OPEN is true if it is not the first paragraph. $LINE_NR is an opaque structure containing the information about the line number of the @-command. It can be used to call `main::echo_error' or `main::echo_warning' with first argument a message, and second argument `$line_nr'. $STATE is a reference on a hash containing a lot of informations about the context of the @-command. $STYLE_STACK is a reference on an array containing the name of the @-commands containing the @-command being formatted. File: texi2html.info, Node: Anchors images and spaces, Next: Text, Prev: Style and accent commands, Up: Customizing HTML Formatting of special simple commands ===================================== The formatting of special simple commands is controlled by functions. To customize the output, the corresponding function references should be redefined. All these functions return a formatted text. The formatting of anchors is controlled by `$anchor', but the function associated with the function reference does more, it is usefull to produce a reference target or link. - Function Reference: $anchor anchor $identifier $href $text $attributes If $IDENTIFIER is not empty, this value should be used to create a target for links (typically associated with a name or id attribute in HTML). The $HREF argument specifies a hpertextual reference which should be used to link to a target. In case both $IDENTIFIER and $HREF are given the text produced should be both a target for $IDENTIFIER and a link to $HREF. $TEXT is the text to be displayed. $ATTRIBUTES are additional attributes. It should be reasonable to assume that the attributes are for a `' HTML element. The formatting of `@image' is controlled by: - Function Reference: $image image $file_path $basename $preformatted $file_name $FILE_PATH is the image file name with the path, $BASENAME is the alternate text or the file name without extension if no alternate text is given. $PREFORMATTED is true if the image appears in preformatted text. $FILE_NAME is the file name without path but with extension. The formatting of `@sp' is controlled by: - Function Reference: $sp sp $number $preformatted $NUMBER is the numeric argument of `@sp'. $PREFORMATTED is true if the `@sp' appears in preformatted text. The formatting of `@acronym' and `@abbr' is controlled by: - Function Reference: $acronym acronym_like $acronym_texi $acronym_text $with_explanation \@explanation_lines $explanation_text $explanation_simply_formatted $ACRONYM_TEXI is the acronym argument with texinfo @-commands, $ACRONYM_TEXT is formatted. The other arguments are related with the explanation, the second arg of the acronym. $WITH_EXPLANATION is true if the second argument of the acronym command is present. If an explanation exists, coming from previous `@acronym' or as an arg of this command, the other args are defined: \@EXPLANATION_LINES is a reference on an array containing the unformatted explanation lines, $EXPLANATION_TEXT is the explanation text formatted, $EXPLANATION_SIMPLY_FORMATTED is the explanation with a light formatting, unabling in HTML (or XML) the explanation to be in an attribute. File: texi2html.info, Node: Text, Next: Strings, Prev: Anchors images and spaces, Up: Customizing HTML Processing special characters in text ===================================== Some characters are processed especially in text: `---', `--', ```' and `'''. This is done only if in normal text and not in some commands (`@code', `@env'...). A function reference is called to process those characters in text - Function Reference: $processed_text normal_text $text The function processes `---', `--', ```' and `''' in $TEXT and returns $PROCESSED_TEXT. The default is to change `---' to `--', `--' to `-', and ```' and `''' to `"'. Some characters are special in HTML (`&', `"', `<' and `>') and should be protected. This is done by the function associated with the function reference - Function Reference: $protected_text protect_text $text The function processes the unprotected text $TEXT and returns the resulting protected text $PROTECTED_TEXT. Empty lines are processed by the following function reference, which could be usefull if empty lines are to be removed for example - Function Reference: $resulting_text empty_line $empty_line This function processes an $EMPTY_LINE and returns the resulting text $RESULTING_TEXT. Empty lines are left as is by default. File: texi2html.info, Node: Strings, Next: References, Prev: Text, Up: Customizing HTML Customizing strings written by `texi2html' ========================================== `texi2html' writes some strings in the generated document at various places, at the page footers, on the help page, for special section headings, buttons alt text and so on. These strings are customizable. The string chosen depends on the language of the document (set by `--lang', `$LANG' or `@documentlanguage'). This is the basis for internationalization as it allows for strings translations. The strings are found in a hash reference, `$LANGUAGES'. Each key is a language code. The associated value is also a hash reference. The key is an english string and the associated value is the string replacing the english string, if present. For example, we have $LANGUAGES->{'fr'} = { ' Up ' => 'Plus haut', }; It means that whenever the string ` Up ' is to be written and the language is `fr', `Plus haut' is written. It is possible to customize the english strings by redefining the `en' language hash. When a string contains a `%' followed by `{' NAME `}' it means that the string will be expanded by `texi2html'. For example, if we have $LANGUAGES->{'fr'} = { 'See %{node_file_href}' => 'Voir %{node_file_href}', }; `%{node_file_href}' will be expanded to an href for a node in a file by `texi2html' in the string. A `%%' will be expanded as `%'. For more on internationalization, see *Note Internationalization::. File: texi2html.info, Node: References, Next: Alignement commands, Prev: Strings, Up: Customizing HTML References ========== * Menu: * Reference to external manual:: * Internal reference:: File: texi2html.info, Node: Reference to external manual, Next: Internal reference, Up: References Reference to external manual ---------------------------- The references are produced with two function references, one for the hypertextual reference construction, the other for the full reference to external manual. - Function Reference: $href external_href $node $node_identifier $xml_node_identifier $manual_file_name $NODE is the node name, with @-commands. $NODE_IDENTIFER is the node name mapped to an identifier acceptable as a file name. $XML_NODE_IDENTIFIER is the node name mapped to an identifier acceptable as an XML identifier. Those identifiers are built as explained in *Note HTML Xref: (texinfo)HTML Xref, thus allowing for cross references to external manuals. $FILE is the manual or file name of the external reference. This function should return an href leading to the external manual. The default for this function is to make a reference compatible with `makeinfo' (*note HTML Xref: (texinfo)HTML Xref.). - Function Reference: $text external_ref $command $section $book $node_and_file $href $cross_ref_name This function formats a reference to an external texinfo manual. The $COMMAND is the ref command (`ref', `xref' or `pxref', in text, at sentence beginning or in parenthesis). The optionnal $SECTION argument is the section in the book and BOOK is the book title. $NODE_AND_FILE is the node and file name formatted according to the convention used in info: `(file)node'. $HREF it an hypertextual reference to the distant manual constructed using the above function. $CROSS_REF_NAME is an optionnal cross reference name appearing in the reference command. This function returns the text corresponding with the external html manual reference. This function returns the full formatted text of the external reference. File: texi2html.info, Node: Internal reference, Prev: Reference to external manual, Up: References Reference to an internal node ----------------------------- A function reference is available for internal references. - Function Reference: $text internal_ref $command $href $short_name $name $is_section This function formats a reference to a node in the current manual. The $COMMAND is the ref command (`ref', `xref' or `pxref', in text, at sentence beginning or in parenthesis). $HREF it an hypertextual reference linking to the corresponding node or section. $SHORT_NAME and $NAME hold the text for the reference but $SHORT_NAME can be the node name which is assumed to be shorter than the section name. $IS_SECTION is a boolean true if the reference is a reference to a section. This function returns the full formatted text of the internal reference. File: texi2html.info, Node: Alignement commands, Next: Paragraph and preformatted region, Prev: References, Up: Customizing HTML Commands used for centering and flushing of text ================================================ When a command controlling the alignement of text is used (`@center', `@flushleft' and `@flushright'), the main program takes care of opening and closing paragraphs. The alignement commands are the key of the `%paragraph_style' hash. The value is used in the function doing the formatting of the paragraphs. *Note Paragraph and preformatted region::. A function references allows for a customization of the formatting of the text appearing in the command block. - Function Reference: $result paragraph_style_command $command $text $COMMAND is the command name, $TEXT is the text appearing within the command. This function returns a formatted text. The default is to return the text unmodified. File: texi2html.info, Node: Paragraph and preformatted region, Next: Complex formats, Prev: Alignement commands, Up: Customizing HTML Formatting or not a paragraph or a preformatted region ====================================================== * Menu: * Paragraph and preformatted formatting:: * Avoiding paragraphs:: File: texi2html.info, Node: Paragraph and preformatted formatting, Next: Avoiding paragraphs, Up: Paragraph and preformatted region Paragraph and preformatted region formatting -------------------------------------------- The formatting of a paragraph region or a preformatted region, is controlled by function references: - Function Reference: $paragraph_text paragraph $text $alignement $formatting_command $formatting_command_formatted \$paragraph_number $format $item_number $enumerate_style $number This function formats a paragraph. $TEXT is the text of the paragraph, $ALIGNEMENT is the empty string when no alignement command has been seen, otherwise it is the current alignement command name. *Note Alignement commands::. The remaining arguments are usefull when the paragraph appears within a list or table. It is usefull whenever the paragraph has to be formatted differently when appearing in such environments. Moreover in that case the format command (`@itemize'...) may have an associated formatting command. $FORMATTING_COMMAND is this formatting command (like `@minus'). $FORMATTING_COMMAND_FORMATTED is the command formatted in html in case the formatting command is a leading command (like `@minus') which should be leading the first paragraph. \$PARAGRAPH_NUMBER is a reference on the number of paragraphs in that format command. The corresponding variable should be increased when a paragraph is added. $FORMAT is the format command. *Note Table and list items::. If the $FORMAT is an enumerate, $ITEM_NUMBER is the number of the item in the list, $ENUMERATE_STYLE is the argument of the enumerate, $NUMBER is the number or letter corresponding with this item. - Function Reference: $preformatted_text preformatted $text $style $region_name $formatting_command $formatting_command_formatted \$preformatted_number $format $item_number $enumerate_style $number This function formats a preformatted region. $TEXT is the text of the preformatted region, $STYLE is the css style associated with that preformatted region (*Note css::). $REGION_NAME is the name of the command opening the preformatted region (`example'..., see *Note Complex formats::) or a identifier for the preformatted context (for example `menu-comment', see *Note Menus::). The alignment commands are not taken into account, as the spaces are preserved in preformatted regions, you should flush and center by hand. The remaining arguments are usefull when the preformatted region appears within a list or table. It is usefull whenever the preformatted region has to be formatted differently when appearing in such environments. Moreover in that case the format command (`@itemize'...) may have an associated formatting command. $FORMATTING_COMMAND is this formatting command (like `@minus'). $FORMATTING_COMMAND_FORMATTED is the command formatted in html in case the formatting command is a leading command (like `@minus') which should be leading the first preformatted region. \$PREFORMATTED_NUMBER is a reference on the number of preformatted regions in that format command. The corresponding variable should be increased when a preformatted region is added. $FORMAT is the format command. *Note Table and list items::. If the $FORMAT is an enumerate, $ITEM_NUMBER is the number of the item in the list, $ENUMERATE_STYLE is the argument of the enumerate, $NUMBER is the number or letter corresponding with this item. File: texi2html.info, Node: Avoiding paragraphs, Prev: Paragraph and preformatted formatting, Up: Paragraph and preformatted region Avoiding paragraphs in formats ------------------------------ It is possible to avoid that a format closes the previous paragraph or preformatted region and reopens one, by putting the format command in a hash, `%format_in_paragraph' with a true value. File: texi2html.info, Node: Complex formats, Next: Lists tables, Prev: Paragraph and preformatted region, Up: Customizing HTML Formatting of complex formats (`@example', `@display'...) ========================================================= Here we see how a whole complex format is formatted. For the formatting of the text, see *Note Paragraph and preformatted region::. The formatting of the complex formats is ultimately controlled by a function, however the default for this function uses a hash reference and changing the hash reference values should be enough in most cases. This hash reference is called `$complex_format_map'. It has a key for each of the complex format commands (`example', `smallexample', `lisp', `smalllisp', `display', `smalldisplay', `format', `smallformat'). The associated value is also a reference on a hash. The keys are `begin' and `end'. An eval of `begin' should lead to the beginning of the formatted HTML, an eval of `end' should lead to the end of the formatted HTML. The enclosed text will be formatted as described in *Note Paragraph and preformatted region::, and the name of the complex format will be available to the function formatting the text. If you aren't satisfied with this scheme, you can redefine the following function reference for a better control over the complex format formatting: - Function Reference: $complex_format_text complex_format $format_name $preformatted_text $FORMAT_NAME is the complex format name, $PREFORMATTED_TEXT is the text allready formatted as described in *Note Paragraph and preformatted region::. This function returns the whole complex format. File: texi2html.info, Node: Lists tables, Next: Definitions, Prev: Complex formats, Up: Customizing HTML Customizing the formatting of lists and tables ============================================== The formatting of lists and tables is done at two levels: * At the level of the whole region (table or list), * At the level of the individual items, rows or cells of the list or table. * Menu: * Table and list items:: * Whole table list:: File: texi2html.info, Node: Table and list items, Next: Whole table list, Up: Lists tables Formatting individual table and list items ------------------------------------------ In texinfo it is possible to give `@itemize' or table command (hereafter called a "format command") a "formatting command". For example `@minus' is the formatting command here: @table @minus The default is to apply the command to the text item, however it is possible to avoid it. The hash `%special_list_commands' has an entry for each of the format command. Each of these entries is a hash reference. If a formatting command is a key of the hash reference, then the formatting command is not applied to the text item for that format command. For example, if we have: $special_list_commands{'itemize'} = { 'bullet' => '' }; and we have the following `@itemize': @itemize @bullet @item an item @end itemize then `@bullet' will not be applied to `an item'. _lists_ The items of lists are formatted using the following function reference: - Function Reference: $list_item list_item $text $format $command $formatted_command $item_number $enumerate_style $number This function formats the text between `@item' commands. $TEXT is the text corresponding with the item. $FORMAT is the type of format, `itemize' or `enumerate'. $COMMAND is the formatting command given in argument to `@itemize', $FORMATTED_COMMAND is this command formatted if it is a leading command, like `@minus'. If the $FORMAT is an enumerate, $ITEM_NUMBER is the number of the item in the list, $ENUMERATE_STYLE is the argument of the enumerate, $NUMBER is the number or letter corresponding with this item. _two column tables_ The two columns tables (`@table', `@ftable' and `@vtable'), items are formatted using two function references, one for the first line located on the `@item' line corresponding with the first column, the other for the text appearing on the following lines, corresponding with the second column text. - Function Reference: $table_item table_item $item_text $index_label_text $format $command $formatted_command This function is used to format the text on the `@item' line. $TEXT_ITEM is the text line. In case there is an index entry associated with the `@item' (as with `@ftable' and `@vtable'), $INDEX_LABEL_TEXT is the text inserted at the place where an index entry appears. *Note Index entry place::. $FORMAT is the type of format, `table', `ftable' or `vtable'. $COMMAND is the formatting command given in argument to the table format command, $FORMATTED_COMMAND is this command formatted if it is a leading command, like `@minus'. - Function Reference: $table_line table_line $text This function is used to format the text on the lines following the `@item' line. $TEXT is the corresponding text. _multitable_ The multitable elements formatting is controlled by the functions associated with two function references. One for a cell, and the other for a row. - Function Reference: $multitable_cell cell $text This function is used to format the text of a multitable cell, the text following a `@item' or a `@tab'. $TEXT is the corresponding text. - Function Reference: $multitable_row row $text $item_command This function is used to format a multitable row. $TEXT is the row text, with cells allready formatted with the `$cell' function reference. $ITEM_COMMAND is the command used to introduce the row, such that it is possible to distinguish between `@item' and `@headitem'.