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#!/usr/bin/env perl
# Generate ZSH completion
use strict;
use warnings;
my $curl = $ARGV[0] || 'curl';
my $regex = '\s+(?:(-[^\s]+),\s)?(--[^\s]+)\s*(\<.+?\>)?\s+(.*)';
my @opts = parse_main_opts('--help', $regex);
my $opts_str;
$opts_str .= qq{ $_ \\\n} foreach (@opts);
chomp $opts_str;
my $tmpl = <<"EOS";
#compdef curl
# curl zsh completion
local curcontext="\$curcontext" state state_descr line
typeset -A opt_args
local rc=1
_arguments -C -S \\
$opts_str
'*:URL:_urls' && rc=0
return rc
EOS
print $tmpl;
sub parse_main_opts {
my ($cmd, $regex) = @_;
my @list;
my @lines = call_curl($cmd);
foreach my $line (@lines) {
my ($short, $long, $arg, $desc) = ($line =~ /^$regex/) or next;
my $option = '';
$arg =~ s/\:/\\\:/g if defined $arg;
$desc =~ s/'/'\\''/g if defined $desc;
$desc =~ s/\[/\\\[/g if defined $desc;
$desc =~ s/\]/\\\]/g if defined $desc;
$desc =~ s/\:/\\\:/g if defined $desc;
$option .= '{' . trim($short) . ',' if defined $short;
$option .= trim($long) if defined $long;
$option .= '}' if defined $short;
$option .= '\'[' . trim($desc) . ']\'' if defined $desc;
$option .= ":'$arg'" if defined $arg;
$option .= ':_files'
if defined $arg and ($arg eq '<file>' || $arg eq '<filename>'
|| $arg eq '<dir>');
push @list, $option;
}
# Sort longest first, because zsh won't complete an option listed
# after one that's a prefix of it.
@list = sort {
$a =~ /([^=]*)/; my $ma = $1;
$b =~ /([^=]*)/; my $mb = $1;
length($mb) <=> length($ma)
} @list;
return @list;
}
sub trim { my $s = shift; $s =~ s/^\s+|\s+$//g; return $s };
sub call_curl {
my ($cmd) = @_;
my $output = `"$curl" $cmd`;
if ($? == -1) {
die "Could not run curl: $!";
} elsif ((my $exit_code = $? >> 8) != 0) {
die "curl returned $exit_code with output:\n$output";
}
return split /\n/, $output;
}
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