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f01fdedb69
Resolves trac ticket #10636 (http://trac.ffmpeg.org/ticket/10636). Texinfo 7.0, released in November 2022, changed the names of various functions. Compiling docs with Texinfo 7.0 resulted in warnings and improperly formatted documentation. More old names appear to have been removed in Texinfo 7.1, released October 2023, which causes docs compilation to fail. This commit addresses the issue by adding logic to switch between the old and new function names depending on the Texinfo version. Texinfo 6.8 produces identical documentation before and after the patch. CC https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1938238.html https://bugs.gentoo.org/916104 Signed-off-by: Frank Plowman <post@frankplowman.com>
424 lines
14 KiB
Perl
424 lines
14 KiB
Perl
# makeinfo HTML output init file
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#
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# Copyright (c) 2011, 2012 Free Software Foundation, Inc.
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# Copyright (c) 2014 Andreas Cadhalpun
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# Copyright (c) 2014 Tiancheng "Timothy" Gu
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#
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# This file is part of FFmpeg.
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#
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# FFmpeg is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# FFmpeg is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public
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# License along with FFmpeg; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Texinfo 7.0 changed the syntax of various functions.
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# Provide a shim for older versions.
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sub ff_set_from_init_file($$) {
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my $key = shift;
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my $value = shift;
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if (exists &{'texinfo_set_from_init_file'}) {
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texinfo_set_from_init_file($key, $value);
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} else {
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set_from_init_file($key, $value);
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}
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}
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sub ff_get_conf($) {
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my $key = shift;
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if (exists &{'texinfo_get_conf'}) {
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texinfo_get_conf($key);
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} else {
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get_conf($key);
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}
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}
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sub get_formatting_function($$) {
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my $obj = shift;
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my $func = shift;
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my $sub = $obj->can('formatting_function');
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if ($sub) {
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return $obj->formatting_function($func);
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} else {
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return $obj->{$func};
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}
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}
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# determine texinfo version
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my $program_version_num = version->declare(ff_get_conf('PACKAGE_VERSION'))->numify;
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my $program_version_6_8 = $program_version_num >= 6.008000;
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# no navigation elements
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ff_set_from_init_file('HEADERS', 0);
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sub ffmpeg_heading_command($$$$$)
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{
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my $self = shift;
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my $cmdname = shift;
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my $command = shift;
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my $args = shift;
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my $content = shift;
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my $result = '';
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# not clear that it may really happen
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if ($self->in_string) {
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$result .= $self->command_string($command) ."\n" if ($cmdname ne 'node');
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$result .= $content if (defined($content));
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return $result;
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}
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my $element_id = $self->command_id($command);
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$result .= "<a name=\"$element_id\"></a>\n"
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if (defined($element_id) and $element_id ne '');
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print STDERR "Process $command "
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.Texinfo::Structuring::_print_root_command_texi($command)."\n"
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if ($self->get_conf('DEBUG'));
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my $element;
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if ($Texinfo::Common::root_commands{$command->{'cmdname'}}
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and $command->{'parent'}
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and $command->{'parent'}->{'type'}
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and $command->{'parent'}->{'type'} eq 'element') {
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$element = $command->{'parent'};
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}
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if ($element) {
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$result .= &{get_formatting_function($self, 'format_element_header')}($self, $cmdname,
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$command, $element);
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}
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my $heading_level;
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# node is used as heading if there is nothing else.
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if ($cmdname eq 'node') {
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if (!$element or (!$element->{'extra'}->{'section'}
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and $element->{'extra'}->{'node'}
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and $element->{'extra'}->{'node'} eq $command
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# bogus node may not have been normalized
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and defined($command->{'extra'}->{'normalized'}))) {
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if ($command->{'extra'}->{'normalized'} eq 'Top') {
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$heading_level = 0;
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} else {
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$heading_level = 3;
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}
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}
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} else {
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$heading_level = $command->{'level'};
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}
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my $heading = $self->command_text($command);
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# $heading not defined may happen if the command is a @node, for example
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# if there is an error in the node.
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if (defined($heading) and $heading ne '' and defined($heading_level)) {
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if ($Texinfo::Common::root_commands{$cmdname}
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and $Texinfo::Common::sectioning_commands{$cmdname}) {
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my $content_href = $self->command_contents_href($command, 'contents',
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$self->{'current_filename'});
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if ($content_href) {
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my $this_href = $content_href =~ s/^\#toc-/\#/r;
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$heading .= '<span class="pull-right">'.
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'<a class="anchor hidden-xs" '.
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"href=\"$this_href\" aria-hidden=\"true\">".
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($ENV{"FA_ICONS"} ? '<i class="fa fa-link"></i>'
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: '#').
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'</a> '.
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'<a class="anchor hidden-xs"'.
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"href=\"$content_href\" aria-hidden=\"true\">".
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($ENV{"FA_ICONS"} ? '<i class="fa fa-navicon"></i>'
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: 'TOC').
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'</a>'.
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'</span>';
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}
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}
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if ($self->in_preformatted()) {
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$result .= $heading."\n";
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} else {
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# if the level was changed, set the command name right
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if ($cmdname ne 'node'
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and $heading_level ne $Texinfo::Common::command_structuring_level{$cmdname}) {
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$cmdname
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= $Texinfo::Common::level_to_structuring_command{$cmdname}->[$heading_level];
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}
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# format_heading_text expects an array of headings for texinfo >= 7.0
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if ($program_version_num >= 7.000000) {
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$heading = [$heading];
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}
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$result .= &{get_formatting_function($self,'format_heading_text')}(
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$self, $cmdname, $heading,
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$heading_level +
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$self->get_conf('CHAPTER_HEADER_LEVEL') - 1, $command);
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}
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}
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$result .= $content if (defined($content));
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return $result;
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}
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foreach my $command (keys(%Texinfo::Common::sectioning_commands), 'node') {
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texinfo_register_command_formatting($command, \&ffmpeg_heading_command);
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}
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# print the TOC where @contents is used
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if ($program_version_6_8) {
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ff_set_from_init_file('CONTENTS_OUTPUT_LOCATION', 'inline');
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} else {
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ff_set_from_init_file('INLINE_CONTENTS', 1);
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}
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# make chapters <h2>
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ff_set_from_init_file('CHAPTER_HEADER_LEVEL', 2);
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# Do not add <hr>
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ff_set_from_init_file('DEFAULT_RULE', '');
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ff_set_from_init_file('BIG_RULE', '');
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# Customized file beginning
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sub ffmpeg_begin_file($$$)
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{
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my $self = shift;
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my $filename = shift;
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my $element = shift;
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my $command;
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if ($element and $self->get_conf('SPLIT')) {
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$command = $self->element_command($element);
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}
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my ($title, $description, $encoding, $date, $css_lines,
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$doctype, $bodytext, $copying_comment, $after_body_open,
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$extra_head, $program_and_version, $program_homepage,
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$program, $generator);
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if ($program_version_num >= 7.000000) {
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($title, $description, $encoding, $date, $css_lines,
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$doctype, $bodytext, $copying_comment, $after_body_open,
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$extra_head, $program_and_version, $program_homepage,
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$program, $generator) = $self->_file_header_information($command);
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} else {
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($title, $description, $encoding, $date, $css_lines,
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$doctype, $bodytext, $copying_comment, $after_body_open,
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$extra_head, $program_and_version, $program_homepage,
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$program, $generator) = $self->_file_header_informations($command);
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}
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my $links = $self->_get_links ($filename, $element);
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my $head1 = $ENV{"FFMPEG_HEADER1"} || <<EOT;
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Created by $program_and_version, $program_homepage -->
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<head>
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<meta charset="utf-8">
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<title>
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EOT
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my $head_title = <<EOT;
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$title
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EOT
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my $head2 = $ENV{"FFMPEG_HEADER2"} || <<EOT;
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</title>
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<meta name="viewport" content="width=device-width,initial-scale=1.0">
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<link rel="stylesheet" type="text/css" href="bootstrap.min.css">
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<link rel="stylesheet" type="text/css" href="style.min.css">
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</head>
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<body>
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<div class="container">
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<h1>
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EOT
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my $head3 = $ENV{"FFMPEG_HEADER3"} || <<EOT;
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</h1>
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EOT
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return $head1 . $head_title . $head2 . $head_title . $head3;
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}
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if ($program_version_6_8) {
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texinfo_register_formatting_function('format_begin_file', \&ffmpeg_begin_file);
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} else {
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texinfo_register_formatting_function('begin_file', \&ffmpeg_begin_file);
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}
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sub ffmpeg_program_string($)
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{
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my $self = shift;
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if (defined($self->get_conf('PROGRAM'))
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and $self->get_conf('PROGRAM') ne ''
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and defined($self->get_conf('PACKAGE_URL'))) {
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return $self->convert_tree(
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$self->gdt('This document was generated using @uref{{program_homepage}, @emph{{program}}}.',
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{ 'program_homepage' => $self->get_conf('PACKAGE_URL'),
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'program' => $self->get_conf('PROGRAM') }));
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} else {
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return $self->convert_tree(
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$self->gdt('This document was generated automatically.'));
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}
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}
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if ($program_version_6_8) {
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texinfo_register_formatting_function('format_program_string', \&ffmpeg_program_string);
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} else {
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texinfo_register_formatting_function('program_string', \&ffmpeg_program_string);
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}
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# Customized file ending
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sub ffmpeg_end_file($)
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{
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my $self = shift;
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my $program_string = &{get_formatting_function($self,'format_program_string')}($self);
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my $program_text = <<EOT;
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<p style="font-size: small;">
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$program_string
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</p>
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EOT
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my $footer = $ENV{FFMPEG_FOOTER} || <<EOT;
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</div>
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</body>
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</html>
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EOT
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return $program_text . $footer;
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}
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if ($program_version_6_8) {
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texinfo_register_formatting_function('format_end_file', \&ffmpeg_end_file);
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} else {
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texinfo_register_formatting_function('end_file', \&ffmpeg_end_file);
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}
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# Dummy title command
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# Ignore title. Title is handled through ffmpeg_begin_file().
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ff_set_from_init_file('USE_TITLEPAGE_FOR_TITLE', 1);
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sub ffmpeg_title($$$$)
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{
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return '';
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}
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texinfo_register_command_formatting('titlefont',
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\&ffmpeg_title);
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# Customized float command. Part of code borrowed from GNU Texinfo.
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sub ffmpeg_float($$$$$)
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{
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my $self = shift;
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my $cmdname = shift;
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my $command = shift;
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my $args = shift;
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my $content = shift;
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my ($caption, $prepended);
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if ($program_version_num >= 7.000000) {
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($caption, $prepended) = Texinfo::Convert::Converter::float_name_caption($self,
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$command);
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} else {
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($caption, $prepended) = Texinfo::Common::float_name_caption($self,
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$command);
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}
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my $caption_text = '';
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my $prepended_text;
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my $prepended_save = '';
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if ($self->in_string()) {
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if ($prepended) {
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$prepended_text = $self->convert_tree_new_formatting_context(
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$prepended, 'float prepended');
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} else {
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$prepended_text = '';
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}
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if ($caption) {
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$caption_text = $self->convert_tree_new_formatting_context(
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{'contents' => $caption->{'args'}->[0]->{'contents'}},
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'float caption');
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}
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return $prepended.$content.$caption_text;
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}
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my $id = $self->command_id($command);
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my $label;
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if (defined($id) and $id ne '') {
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$label = "<a name=\"$id\"></a>";
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} else {
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$label = '';
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}
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if ($prepended) {
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if ($caption) {
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# prepend the prepended tree to the first paragraph
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my @caption_original_contents = @{$caption->{'args'}->[0]->{'contents'}};
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my @caption_contents;
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my $new_paragraph;
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while (@caption_original_contents) {
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my $content = shift @caption_original_contents;
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if ($content->{'type'} and $content->{'type'} eq 'paragraph') {
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%{$new_paragraph} = %{$content};
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$new_paragraph->{'contents'} = [@{$content->{'contents'}}];
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unshift (@{$new_paragraph->{'contents'}}, {'cmdname' => 'strong',
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'args' => [{'type' => 'brace_command_arg',
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'contents' => [$prepended]}]});
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push @caption_contents, $new_paragraph;
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last;
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} else {
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push @caption_contents, $content;
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}
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}
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push @caption_contents, @caption_original_contents;
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if ($new_paragraph) {
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$caption_text = $self->convert_tree_new_formatting_context(
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{'contents' => \@caption_contents}, 'float caption');
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$prepended_text = '';
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}
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}
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if ($caption_text eq '') {
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$prepended_text = $self->convert_tree_new_formatting_context(
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$prepended, 'float prepended');
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if ($prepended_text ne '') {
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$prepended_save = $prepended_text;
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$prepended_text = '<p><strong>'.$prepended_text.'</strong></p>';
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}
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}
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} else {
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$prepended_text = '';
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}
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if ($caption and $caption_text eq '') {
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$caption_text = $self->convert_tree_new_formatting_context(
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$caption->{'args'}->[0], 'float caption');
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}
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if ($prepended_text.$caption_text ne '') {
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if ($program_version_num >= 7.000000) {
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$prepended_text = $self->html_attribute_class('div',['float-caption']). '>'
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. $prepended_text;
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} else {
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$prepended_text = $self->_attribute_class('div','float-caption'). '>'
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. $prepended_text;
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}
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$caption_text .= '</div>';
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}
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my $html_class = '';
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if ($prepended_save =~ /NOTE/) {
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$html_class = 'info';
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$prepended_text = '';
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$caption_text = '';
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} elsif ($prepended_save =~ /IMPORTANT/) {
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$html_class = 'warning';
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$prepended_text = '';
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$caption_text = '';
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}
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if ($program_version_num >= 7.000000) {
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return $self->html_attribute_class('div', [$html_class]). '>' . "\n" .
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$prepended_text . $caption_text . $content . '</div>';
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} else {
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return $self->_attribute_class('div', $html_class). '>' . "\n" .
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$prepended_text . $caption_text . $content . '</div>';
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}
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}
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texinfo_register_command_formatting('float',
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\&ffmpeg_float);
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1;
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