#!/usr/bin/perl
# $Id: w3mhelp.cgi.in,v 1.11 2002/01/31 17:54:58 ukai Exp $

if ( $^O =~ /^(ms)?(dos|win(32|nt)?)/i ) {
  $CYGPATH = 1;
}

$helpdir = "/usr/share/w3m";
if ($CYGPATH) {
  $helpdir = &cygwin_pathconv($helpdir);
}
unshift(@INC, $helpdir);
@docdirs = split(" ", "doc:en_English doc-jp:ja_Japanese");

require "w3mhelp-funcname.pl";
require "w3mhelp-funcdesc.en.pl";
$lang = 'en';

%htmlesc = (
    '<', '&lt;',
    '>', '&gt;',
    '&', '&amp;'
);

$RC_DIR = '~/.w3m';
$RC_DIR =~ s/^~/$ENV{'HOME'}/;
if ($CYGPATH) {
  $RC_DIR = &cygwin_pathconv("$RC_DIR");
}
$keymap = "$RC_DIR/keymap";
$version = '*unknown*';
if (defined($ENV{'QUERY_STRING'})) {
    print "QUERY_STRING=$ENV{'QUERY_STRING'}\n";
    if ($ENV{'QUERY_STRING'} =~ /(^|&)version=([^&]*)/) {
	$version = $2;
	$version =~ s/\+|%([0-9A-Fa-f][0-9A-Fa-f])/$& eq '+' ? ' ' : pack('C', hex($1))/ge;
	$version =~ s/w3m\///;
    }
    if ($ENV{'QUERY_STRING'} =~ /(^|&)lang=([^&]*)/) {
	local($tlang) = $2;
	$tlang =~ s/\+|%([0-9A-Fa-f][0-9A-Fa-f])/$& eq '+' ? ' ' : pack('C', hex($1))/ge;
	$tlang =~ tr/A-Z/a-z/;
	if ($tlang !~ /^[a-z][a-z]$/) {
	    $tlang = 'en';
	}
	print "tlang=$tlang\n";
	eval {require "w3mhelp-funcdesc.$tlang.pl";};
	if (defined(%funcdesc)) {
	    $lang = $tlang;
	}
    }
}

%f = %keyfunc;
%keyfunc = ();
while (($key, $fname) = each %f) {
	$key = &norm_key($key);
	$keyfunc{$key} = $fname;
}

if (-f $keymap) {
    open(KEYMAP, "< $keymap") || die "cannot open keymap: $keymap, $!";
    &load_keymap(*KEYMAP, $func);
    close(KEYMAP);
}

local (%funckeydesc, $key, $fname, $desc);

%funcname = (%funcname, %buf_funcname, %lineedit_funcname);

%funcdesc = (%funcdesc, %buf_funcdesc, %lineedit_funcdesc);
while (($fname, $desc) = each %funcdesc) {
    $funckeydesc{$funcname{$fname}} = "$desc\n";
}

while (($key, $fname) = each %keyfunc) {
    $funckeydesc{$funcname{$fname}} .= "$key,";
}
while (($key, $fname) = each %buf_keyfunc) {
    $funckeydesc{$funcname{$fname}} .= "$key,";
}
while (($key, $fname) = each %lineedit_keyfunc) {
    $funckeydesc{$funcname{$fname}} .= "$key,";
}

print <<HEADING;
Content-Type: text/html

<HTML>
<HEAD>
<TITLE>w3m help page</TITLE>
</HEAD>
<BODY>
<CENTER>
******* 
<A HREF="http://w3m.sourceforge.net/">w3m</A>
 (WWW-wo-Miru)  Version $version by 
<A HREF="mailto:aito\@fw.ipsj.or.jp">A.ITO</A> ********<BR>
             ***** Key assign table *****
</CENTER>

HEADING

$q_version = $version;
$q_version =~ s/[^A-Za-z0-9_\$\.\-]/sprintf('%%%02X', ord($&))/ge;
$script = "<A HREF=\"$ENV{'SCRIPT_NAME'}?version=$q_version&amp;lang=";

# doc:en_English doc-jp:ja_Japanese
for $otherlang (@docdirs) {
    local(@d) = split(/[:_]/, $otherlang);
    
    if ($d[1] ne $lang) {
	$d[1] =~ s/[^A-Za-z0-9_\$\.\-]/sprintf('%%%02X', ord($&))/ge;
	print $script, $d[1], "\">$d[2] version</A><BR>\n";
    }
}

&show_keymap("Page/Cursor motion", 
	     split(" ", "pgFore pgBack movR movL movD movU ldown1 lup1
		shiftl shiftr col1L col1R linbeg linend ctrCsrH ctrCsrV
		goLine goLineF goLineL movRW movLW
		topA lastA nextA prevA
		nextR nextRD nextL nextRD nextLU nextD nextU"));

&show_keymap("Hyperlink operation",
	     split(" ", "followA svA followI svI submitForm
		curURL peekURL peekIMG pginfo curlno chkURL chkNMID
		rFrame extbrz linkbrz"));

&show_keymap("File/Stream operation",
	     split(" ", "goURL ldfile readsh pipesh"));

&show_keymap("Buffer operation",
	     split(" ", "backBf selMn selBuf vwSrc svSrc svBuf
		editBf editScr reload rdrwSc dispI stopI"));

&show_keymap("Bookmark operation",
	     split(" ", "ldBmark adBmark"));

&show_keymap("Search",
	     split(" ", "srchfor srchbak srchnxt srchprv isrchfor isrchbak"));

&show_keymap("Dictionary look-up",
	     split(" ", "dictword dictwordat"));

&show_keymap("Mark operation",
	     split(" ", "_mark nextMk prevMk reMark"));

&show_keymap("Miscellany",
	     split(" ", "mainMn ldhelp ldOpt cooLst ldHist msgs msToggle
		wrapToggle setAlarm setOpt setEnv execsh susp qquitfm quitfm"));

&show_keymap("Buffer selection mode",
	     split(" ", "buffer_next buffer_prev buffer_delete buffer_go"));

&show_keymap("Line-edit mode",
	     split(" ", "lineedit_forward lineedit_back lineedit_backspace 
		lineedit_delete lineedit_kill_after lineedit_kill_before
		lineedit_top lineedit_bottom lineedit_prev lineedit_next
		lineedit_complete lineedit_accept"));

print <<PAGE;
<HR>
</BODY>
</HTML>
PAGE

exit 0;

sub load_keymap {
    local(*FH) = shift;
    local($func) = @_;

    while (<FH>) {
	next if /^#/;
	next if /^\s*$/;
	($keymap, $key, $fname, $data) = split;
	next if $data;
	next unless $keymap =~ /keymap/;
	$fname =~ tr/a-z/A-Z/;
	next unless (defined($funcdesc{$fname}));
	$key = &norm_key($key);
	$keyfunc{$key} = $fname;
    }
}

sub norm_key {
    local($_) = @_;

    s/\\(.)/$1/g;
    s/^\^(.)/C-$1/;
    s/^(C-\[|M-)/ESC-/;
    if (/^ESC-\[/) {
	/^ESC-\[A$/ && return "UP";
	/^ESC-\[B$/ && return "DOWN";
	/^ESC-\[C$/ && return "RIGHT";
	/^ESC-\[D$/ && return "LEFT";
	s/^ESC-/\^\[/;
	return $_;
    }
    s/^ESC-\^(.)/ESC-C-$1/;
    s/^(ESC-)?C-[iI]/${1}TAB/;
    s/^(ESC-)?C-\?/${1}DEL/;
    return $_;
}

sub show_keymap {
    local($head, @list) = @_;
    local($fid);
    local($attr) = " WIDTH=140";

    if (defined($title{$head})) {
	$head = $title{$head};
	$head =~ s/[<>&]/$htmlesc{$&}/ge;
    }

    print <<PAGE;
<H2>$head</H2>
<table cellpadding=0>
PAGE
    foreach $fid (@list) {
	local ($desc, $keys) = split("\n", $funckeydesc{$fid}, 2);
	$keys =~ s/,$//;
	$keys = '<NOT ASSIGNED>' if ($keys eq '');
	$keys =~ s/[<>&]/$htmlesc{$&}/ge;
	$desc =~ s/[<>&]/$htmlesc{$&}/ge;
	print <<PAGE;
<TR><TD$attr>$keys</TD><TD>$desc</TD></TR>
PAGE
	$attr = "";
    }
    print "</table>\n";
}


sub cygwin_pathconv {
  local($_) = @_;
  local(*CYGPATH);

  open(CYGPATH, '-|') || exec('cygpath', '-w', $_);
  $_ = <CYGPATH>;
  close(CYGPATH);
  s/\r?\n$//;
  s!\\!/!g;
  s!/$!!;
  return $_;
}
