shithub: purgatorio

Download patch

ref: 7ae7351ace73a70cbbaf5a2da016005485d0d43b
parent: f4624471579e0cfb531ffc733cdbe007ecdfed9d
author: henesy <devnull@localhost>
date: Mon May 31 15:18:46 EDT 2021

add hd and tl commands for sh interactive list manipulation

--- /dev/null	Mon Oct 18 12:05:45 2021
+++ b/appl/cmd/hd.b	Mon May 31 15:18:46 2021
@@ -0,0 +1,37 @@
+implement Hd;
+
+include "sys.m";
+	sys: Sys;
+
+include "draw.m";
+
+include "string.m";
+
+stderr: ref Sys->FD;
+
+Hd: module {
+	init:	fn(nil: ref Draw->Context, argv: list of string);
+};
+
+
+init(nil: ref Draw->Context, argv: list of string)
+{
+	sys = load Sys Sys->PATH;
+	stderr = sys->fildes(2);
+	str := load String String->PATH;
+
+	if(len argv < 2)
+		usage();
+
+	argv = tl argv;
+
+	out := str->quoted(hd str->unquoted(str->quoted(argv)) :: nil);
+	sys->print("%s\n", out);
+
+	exit;
+}
+
+usage() {
+	sys->fprint(stderr, "usage: hd (list 'of tokens')\n");
+	exit;
+}
--- a/appl/cmd/mkfile	Mon May 31 13:41:54 2021
+++ b/appl/cmd/mkfile	Mon May 31 15:18:46 2021
@@ -80,6 +80,7 @@
 	grep.dis\
 	gunzip.dis\
 	gzip.dis\
+	hd.dis\
 	idea.dis\
 	import.dis\
 	iostats.dis\
@@ -156,6 +157,7 @@
 	time.dis\
 	timestamp.dis\
 	tkcmd.dis\
+	tl.dis\
 	touch.dis\
 	touchcal.dis\
 	tokenize.dis\
--- /dev/null	Mon Oct 18 12:05:45 2021
+++ b/appl/cmd/tl.b	Mon May 31 15:18:46 2021
@@ -0,0 +1,37 @@
+implement Tl;
+
+include "sys.m";
+	sys: Sys;
+
+include "draw.m";
+
+include "string.m";
+
+stderr: ref Sys->FD;
+
+Tl: module {
+	init:	fn(nil: ref Draw->Context, argv: list of string);
+};
+
+
+init(nil: ref Draw->Context, argv: list of string)
+{
+	sys = load Sys Sys->PATH;
+	stderr = sys->fildes(2);
+	str := load String String->PATH;
+
+	if(len argv < 2)
+		usage();
+
+	argv = tl argv;
+
+	out := str->quoted(tl str->unquoted(str->quoted(argv)));
+	sys->print("%s\n", out);
+
+	exit;
+}
+
+usage() {
+	sys->fprint(stderr, "usage: tl (list 'of tokens')\n");
+	exit;
+}