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curl/docs/cmdline-opts/gen.pl
Jay Satiro d0837f36db cmdline-opts/gen.pl: Open input files in CRLF mode
On Windows it's possible to have input files with CRLF line endings and
a perl that defaults to LF line endings (eg msysgit). Currently that
results in generator output of mixed line endings of CR, LF and CRLF.

This change fixes that issue in the most succinct way by opening the
files in :crlf text mode even when the perl being used does not default
to that mode. (On operating systems that don't have a separate text mode
it's essentially a no-op.) The output continues to be in the perl's
native line ending.
2017-01-23 13:57:54 +01:00

384 lines
7.6 KiB
Perl
Executable File

#!/usr/bin/perl
=begin comment
This script generates the manpage.
Example: gen.pl mainpage > curl.1
Dev notes:
We open *input* files in :crlf translation (a no-op on many platforms) in
case we have CRLF line endings in Windows but a perl that defaults to LF.
Unfortunately it seems some perls like msysgit can't handle a global input-only
:crlf so it has to be specified on each file open for text input.
=end comment
=cut
my $some_dir=".";
opendir(my $dh, $some_dir) || die "Can't opendir $some_dir: $!";
my @s = grep { /\.d$/ && -f "$some_dir/$_" } readdir($dh);
closedir $dh;
my %optshort;
my %optlong;
my %helplong;
my %arglong;
my %redirlong;
my %protolong;
# get the long name version, return the man page string
sub manpageify {
my ($k)=@_;
my $l;
if($optlong{$k} ne "") {
# both short + long
$l = "\\fI-".$optlong{$k}.", --$k\\fP";
}
else {
# only long
$l = "\\fI--$k\\fP";
}
return $l;
}
sub printdesc {
my @desc = @_;
for my $d (@desc) {
# skip lines starting with space (examples)
if($d =~ /^[^ ]/) {
for my $k (keys %optlong) {
my $l = manpageify($k);
$d =~ s/--$k([^a-z0-9_-])/$l$1/;
}
}
print $d;
}
}
sub seealso {
my($standalone, $data)=@_;
if($standalone) {
return sprintf
".SH \"SEE ALSO\"\n$data\n";
}
else {
return "See also $data. ";
}
}
sub overrides {
my ($standalone, $data)=@_;
if($standalone) {
return ".SH \"OVERRIDES\"\n$data\n";
}
else {
return $data;
}
}
sub protocols {
my ($standalone, $data)=@_;
if($standalone) {
return ".SH \"PROTOCOLS\"\n$data\n";
}
else {
return "($data) ";
}
}
sub added {
my ($standalone, $data)=@_;
if($standalone) {
return ".SH \"ADDED\"\nAdded in curl version $data\n";
}
else {
return "Added in $data. ";
}
}
sub single {
my ($f, $standalone)=@_;
open(F, "<:crlf", "$f") ||
return 1;
my $short;
my $long;
my $tags;
my $added;
my $protocols;
my $arg;
my $mutexed;
my $requires;
my $seealso;
my $magic; # cmdline special option
while(<F>) {
if(/^Short: *(.)/i) {
$short=$1;
}
elsif(/^Long: *(.*)/i) {
$long=$1;
}
elsif(/^Added: *(.*)/i) {
$added=$1;
}
elsif(/^Tags: *(.*)/i) {
$tags=$1;
}
elsif(/^Arg: *(.*)/i) {
$arg=$1;
}
elsif(/^Magic: *(.*)/i) {
$magic=$1;
}
elsif(/^Mutexed: *(.*)/i) {
$mutexed=$1;
}
elsif(/^Protocols: *(.*)/i) {
$protocols=$1;
}
elsif(/^See-also: *(.*)/i) {
$seealso=$1;
}
elsif(/^Requires: *(.*)/i) {
$requires=$1;
}
elsif(/^Help: *(.*)/i) {
;
}
elsif(/^---/) {
if(!$long) {
print STDERR "WARN: no 'Long:' in $f\n";
}
last;
}
else {
chomp;
print STDERR "WARN: unrecognized line in $f, ignoring:\n:'$_';"
}
}
my @dest;
while(<F>) {
push @desc, $_;
}
close(F);
my $opt;
if(defined($short) && $long) {
$opt = "-$short, --$long";
}
elsif($short && !$long) {
$opt = "-$short";
}
elsif($long && !$short) {
$opt = "--$long";
}
if($arg) {
$opt .= " $arg";
}
if($standalone) {
print ".TH curl 1 \"30 Nov 2016\" \"curl 7.52.0\" \"curl manual\"\n";
print ".SH OPTION\n";
print "curl $opt\n";
}
else {
print ".IP \"$opt\"\n";
}
if($protocols) {
print protocols($standalone, $protocols);
}
if($standalone) {
print ".SH DESCRIPTION\n";
}
printdesc(@desc);
undef @desc;
my @foot;
if($seealso) {
my @m=split(/ /, $seealso);
my $mstr;
for my $k (@m) {
my $l = manpageify($k);
$mstr .= sprintf "%s$l", $mstr?" and ":"";
}
push @foot, seealso($standalone, $mstr);
}
if($requires) {
my $l = manpageify($long);
push @foot, "$l requires that the underlying libcurl".
" was built to support $requires. ";
}
if($mutexed) {
my @m=split(/ /, $mutexed);
my $mstr;
for my $k (@m) {
my $l = manpageify($k);
$mstr .= sprintf "%s$l", $mstr?" and ":"";
}
push @foot, overrides($standalone, "This option overrides $mstr. ");
}
if($added) {
push @foot, added($standalone, $added);
}
if($foot[0]) {
print "\n";
my $f = join("", @foot);
$f =~ s/ +\z//; # remove trailing space
print "$f\n";
}
return 0;
}
sub getshortlong {
my ($f)=@_;
open(F, "<:crlf", "$f");
my $short;
my $long;
my $help;
my $arg;
my $protocols;
while(<F>) {
if(/^Short: (.)/i) {
$short=$1;
}
elsif(/^Long: (.*)/i) {
$long=$1;
}
elsif(/^Help: (.*)/i) {
$help=$1;
}
elsif(/^Arg: (.*)/i) {
$arg=$1;
}
elsif(/^Protocols: (.*)/i) {
$protocols=$1;
}
elsif(/^---/) {
last;
}
}
close(F);
if($short) {
$optshort{$short}=$long;
}
if($long) {
$optlong{$long}=$short;
$helplong{$long}=$help;
$arglong{$long}=$arg;
$protolong{$long}=$protocols;
}
}
sub indexoptions {
foreach my $f (@s) {
getshortlong($f);
}
}
sub header {
my ($f)=@_;
open(F, "<:crlf", "$f");
my @d;
while(<F>) {
push @d, $_;
}
close(F);
printdesc(@d);
}
sub listhelp {
foreach my $f (sort keys %helplong) {
my $long = $f;
my $short = $optlong{$long};
my $opt;
if(defined($short) && $long) {
$opt = "-$short, --$long";
}
elsif($long && !$short) {
$opt = " --$long";
}
my $arg = $arglong{$long};
if($arg) {
$opt .= " $arg";
}
my $line = sprintf " %-19s %s\n", $opt, $helplong{$f};
if(length($line) > 79) {
print STDERR "WARN: the --$long line is too long\n";
}
print $line;
}
}
sub mainpage {
# show the page header
header("page-header");
# output docs for all options
foreach my $f (sort @s) {
single($f, 0);
}
header("page-footer");
}
sub showonly {
my ($f) = @_;
if(single($f, 1)) {
print STDERR "$f: failed\n";
}
}
sub showprotocols {
my %prots;
foreach my $f (keys %optlong) {
my @p = split(/ /, $protolong{$f});
for my $p (@p) {
$prots{$p}++;
}
}
for(sort keys %prots) {
printf "$_ (%d options)\n", $prots{$_};
}
}
sub getargs {
my $f;
do {
$f = shift @ARGV;
if($f eq "mainpage") {
mainpage();
return;
}
elsif($f eq "listhelp") {
listhelp();
return;
}
elsif($f eq "single") {
showonly(shift @ARGV);
return;
}
elsif($f eq "protos") {
showprotocols();
return;
}
} while($f);
print "Usage: gen.pl <mainpage/listhelp/single FILE/protos>\n";
}
#------------------------------------------------------------------------
# learn all existing options
indexoptions();
getargs();