From f9f22b0d6394cd9a705cb3c1c1020ba2f19c7ab0 Mon Sep 17 00:00:00 2001
From: Alessandro Ghedini <alessandro@ghedini.me>
Date: Thu, 7 May 2015 16:07:24 +0200
Subject: scripts: add zsh.pl for generating zsh completion

---
 Makefile.am    |  2 +-
 scripts/zsh.pl | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+), 1 deletion(-)
 create mode 100755 scripts/zsh.pl

diff --git a/Makefile.am b/Makefile.am
index 60d744e46..22823d9d4 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -118,7 +118,7 @@ WINBUILD_DIST = winbuild/BUILD.WINDOWS.txt winbuild/gen_resp_file.bat	\
  winbuild/Makefile.msvc.names
 
 EXTRA_DIST = CHANGES COPYING maketgz Makefile.dist curl-config.in	\
- RELEASE-NOTES buildconf libcurl.pc.in MacOSX-Framework	\
+ RELEASE-NOTES buildconf libcurl.pc.in MacOSX-Framework scripts/zsh.pl	\
  $(CMAKE_DIST) $(VC_DIST) $(WINBUILD_DIST) lib/libcurl.vers.in
 
 CLEANFILES = $(VC6_LIBDSP) $(VC6_SRCDSP) $(VC7_LIBVCPROJ) $(VC7_SRCVCPROJ)	\
diff --git a/scripts/zsh.pl b/scripts/zsh.pl
new file mode 100755
index 000000000..7520a15a6
--- /dev/null
+++ b/scripts/zsh.pl
@@ -0,0 +1,77 @@
+#!/usr/bin/perl
+
+# Generate ZSH completion
+
+use strict;
+use warnings;
+
+my $curl = $ARGV[0] || 'curl';
+
+my $regex = '\s+(?:(-[^\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, $regex) = @_;
+
+    my @list;
+    my @lines = split /\n/, `"$curl" $cmd`;
+
+    foreach my $line (@lines) {
+        my ($short, $long, $arg, $desc) = ($line =~ /^$regex/) or next;
+
+        my $option = '';
+
+        $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 '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 };
-- 
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