shithub: dmenu

Download patch

ref: fc299fdf45602f63cf16c939706abbfc276e69db
author: glenda <glenda@9front.local>
date: Sat Sep 4 20:04:59 EDT 2021 

"initial


--- /dev/null
+++ b/linesel.c
@@ -1,0 +1,143 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <draw.h>
+#include <thread.h>
+#include <keyboard.h>
+#include <mouse.h>
+
+int bflag;
+Image *fgcolor, *bgcolor;
+Font *font;
+char **lines, **matches, *buffer,  *selected;
+usize nlines, nmatches;
+Rune kbdin[512];
+Keyboardctl *keyboard;
+Mousectl *mouse;
+
+enum
+{
+	Ckeyboard,
+	Cmouse,
+	Cresize,
+	Cnum
+};
+
+static void
+redraw(void)
+{
+	draw(screen, screen->r, bgcolor, nil, ZP);
+	string(screen,
+	  Pt(10, 10), fgcolor, ZP, font, "test");
+	flushimage(display, 1);
+}
+
+static void
+resetmatches(void)
+{
+	memmove(matches, lines, nlines * sizeof *lines);
+	nmatches = nlines;
+}
+
+static void
+initgraphics(Alt *a)
+{
+	if(initdraw(nil, nil, "linesel") == -1)
+		sysfatal("initdraw: %r");
+	if(bflag){
+		fgcolor = display->white;
+		bgcolor = display->black;
+	}else{
+		fgcolor = display->black;
+		bgcolor = display->white;
+	}
+	font = display->defaultfont;
+
+	if((keyboard = initkeyboard(nil)) == nil)
+		sysfatal("initkeyboard: %r");
+	if((mouse = initmouse(nil, screen)) == nil)
+		sysfatal("initmouse: %r");	
+
+	a[Ckeyboard].c = keyboard->c;
+	a[Cmouse].c = mouse->c;
+}
+
+static void
+readbuffer(void)
+{
+	Biobuf *bp;
+	char *line, *s;
+
+	if((bp = Bfdopen(0, OREAD)) == nil)
+		sysfatal("setting buffering on fd0: %r");
+	if ((buffer = Brdstr(bp, '\0', 1)) == nil)
+		sysfatal("reading input lines: %r");
+
+	for(line = s = buffer; s = strchr(s, '\n'); line = ++s){
+		*s = '\0';
+		if((lines = realloc(lines, ++nlines * sizeof *lines)) == nil)
+			sysfatal("malloc: %r");
+		lines[nlines-1] = line;
+	}
+	if((matches = malloc(nlines * sizeof *lines)) == nil)
+		sysfatal("malloc: %r");
+}
+
+static void
+linesel(void)
+{
+	Rune r;
+	Mouse m;
+	Alt a[] = {
+		[Ckeyboard] = {nil, &r, CHANRCV},
+		[Cmouse] = {nil, &m, CHANRCV},
+		[Cnum] = {nil, nil, CHANEND},
+	};
+
+	initgraphics(a);
+	redraw();
+
+	for(;;){
+		switch(alt(a)){
+		case -1:
+			sysfatal("watching channels: %r\n");
+
+		case Ckeyboard:
+			switch(r){
+			case '\n':
+				return;
+			}
+			break;
+
+		case Cmouse:
+			break;
+		}
+	}
+
+}
+
+static void
+usage(void)
+{
+	print("usage: %s [-b] <choices\n", argv0);
+	threadexitsall("usage");
+}
+
+void
+threadmain(int argc, char **argv)
+{
+	ARGBEGIN{
+	case 'b':
+		bflag = 1;
+		break;
+	default:
+		usage();
+	}ARGEND;
+
+	readbuffer();
+	resetmatches();
+	selected = matches[0];
+	linesel();
+	print("%s\n", selected);
+	threadexitsall(nil);
+}
--- /dev/null
+++ b/mkfile
@@ -1,0 +1,6 @@
+</$objtype/mkfile
+
+TARG=linesel
+OFILES=linesel.$O
+HFILES=
+</sys/src/cmd/mkone