add aux/statusmsg
cinap_lenrek
parent
1d58cb8832
commit
e283619ecb
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@ -1,6 +1,6 @@
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.TH STATUSBAR 8
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.SH NAME
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statusbar \- display a bar graph status window
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statusbar, statusmsg \- display a bar graph or status message window
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.SH SYNOPSIS
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.B aux/statusbar
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[
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@ -11,20 +11,33 @@ statusbar \- display a bar graph status window
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.I minx,miny,maxx,maxy
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]
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.I title
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.br
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.B aux/statusmsg
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[
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.B -kt
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]
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[
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.B -w
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.I minx,miny,maxx,maxy
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] [
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.I title
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]
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.SH DESCRIPTION
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.I Aux/statusbar
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reads textual status lines
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from standard input, converting them into a
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continuously updated bar graph displayed in a new window
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on the screen.
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.I Statusbar
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and
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.I statusmsg
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read textual status lines from standard input into a
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continuously updated bar graph or text message displayed in
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a new window on the screen.
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The
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.I title
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is displayed on a line above the bar graph.
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Each input line is two space-separated decimal numbers:
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is displayed on a line above the bar graph or message.
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For
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.I statusbar,
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each input line is two space-separated decimal numbers:
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the numerator and denominator of a fraction.
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.PP
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.I Statusbar
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exits when it reaches end-of-file on standard input.
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The programs exit when it reaches end-of-file on standard input.
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Typing
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.SM DEL
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or control-C
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@ -33,39 +46,15 @@ will also cause it to exit.
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The options are:
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.TP
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.B -k
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do not allow typing to cause
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.I statusbar
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to exit
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do not allow typing to cause exit
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.TP
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.B -t
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print an ASCII status bar to standard output, using
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backspace to redraw it
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print an ASCII version of the bar or message to standard output, using
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backspace to redraw it.
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.TP
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.B -w
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set the coordinates of the statusbar window created
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set the coordinates of the window created
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.PD
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.SH EXAMPLE
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The
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.B -v
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option to
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.IR hget (1)
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.\" and the
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.\" .B -d
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.\" option to
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.\" .IR venti/fmtarenas
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.\" and
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.\" .I venti/fmtisect
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.\" (see
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.\" .IR venti-fmt (8))
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causes it to print status lines suitable for
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input to
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.IR statusbar .
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.PP
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Monitor a long download:
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.IP
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.EX
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hget -v -o bigfile http://server.com/bigfile |[2]
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aux/statusbar 'big file download'
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.EE
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.SH SOURCE
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.B /sys/src/cmd/aux/statusbar.c
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.B /sys/src/cmd/aux/statusmsg.c
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@ -0,0 +1,298 @@
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#include <u.h>
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#include <libc.h>
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#include <draw.h>
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#include <bio.h>
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#include <event.h>
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enum {PNCTL=3};
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static char* rdenv(char*);
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int newwin(char*);
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Rectangle screenrect(void);
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int nokill;
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int textmode;
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char *title = nil;
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char message[1024];
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Image *light;
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Image *text;
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Rectangle rtext;
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void
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initcolor(void)
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{
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text = display->black;
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light = allocimagemix(display, DPalegreen, DWhite);
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}
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void
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drawmsg(void)
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{
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if(textmode){
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static int last = 0;
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while(last-- > 0)
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write(1, "\b", 1);
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write(1, message, strlen(message));
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last = utflen(message);
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return;
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}
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draw(screen, rtext, light, nil, ZP);
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string(screen, rtext.min, text, ZP, display->defaultfont, message);
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flushimage(display, 1);
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}
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void
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eresized(int new)
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{
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if(new && getwindow(display, Refnone) < 0)
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fprint(2,"can't reattach to window");
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rtext = screen->r;
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draw(screen, rtext, light, nil, ZP);
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rtext.min.x += 4;
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rtext.min.y += 4;
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if(title){
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string(screen, rtext.min, text, ZP, display->defaultfont, title);
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rtext.min.y += 8+display->defaultfont->height;
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}
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rtext.max.y = rtext.min.y + display->defaultfont->height;
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drawmsg();
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}
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void
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msg(Biobuf *b)
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{
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char *p;
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Event e;
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int k, die, parent, child;
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parent = getpid();
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die = 0;
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if(textmode){
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child = -1;
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if(title){
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write(1, title, strlen(title));
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write(1, ": ", 2);
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}
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} else
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switch(child = rfork(RFMEM|RFPROC)) {
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case 0:
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sleep(1000);
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while(!die && (k = eread(Ekeyboard|Emouse, &e))) {
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if(nokill==0 && k == Ekeyboard && (e.kbdc == 0x7F || e.kbdc == 0x03)) { /* del, ctl-c */
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die = 1;
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postnote(PNPROC, parent, "interrupt");
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_exits("interrupt");
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}
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}
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_exits(0);
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}
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while(!die && (p = Brdline(b, '\n'))) {
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snprint(message, sizeof(message), "%.*s", Blinelen(b)-1, p);
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drawmsg();
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}
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if(textmode)
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write(1, "\n", 1);
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postnote(PNCTL, child, "kill");
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}
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void
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usage(void)
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{
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fprint(2, "usage: %s [-kt] [-w minx,miny,maxx,maxy] [title]\n", argv0);
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exits("usage");
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}
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void
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main(int argc, char **argv)
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{
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Biobuf b;
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char *p, *q;
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int lfd;
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p = "0,0,200,60";
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ARGBEGIN{
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case 'w':
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p = ARGF();
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break;
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case 't':
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textmode = 1;
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break;
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case 'k':
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nokill = 1;
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break;
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default:
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usage();
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}ARGEND;
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switch(argc){
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default:
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usage();
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case 1:
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title = argv[0];
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break;
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case 0:
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break;
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}
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lfd = dup(0, -1);
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while(q = strchr(p, ','))
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*q = ' ';
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Binit(&b, lfd, OREAD);
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if(textmode || newwin(p) < 0){
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textmode = 1;
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}else{
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if(initdraw(0, 0, title) < 0)
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exits("initdraw");
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initcolor();
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einit(Emouse|Ekeyboard);
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eresized(0);
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}
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msg(&b);
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exits(0);
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}
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/* all code below this line should be in the library, but is stolen from colors instead */
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static char*
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rdenv(char *name)
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{
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char *v;
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int fd, size;
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fd = open(name, OREAD);
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if(fd < 0)
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return 0;
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size = seek(fd, 0, 2);
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v = malloc(size+1);
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if(v == 0){
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fprint(2, "%s: can't malloc: %r\n", argv0);
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exits("no mem");
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}
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seek(fd, 0, 0);
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read(fd, v, size);
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v[size] = 0;
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close(fd);
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return v;
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}
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int
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newwin(char *win)
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{
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char *srv, *mntsrv;
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char spec[100];
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int srvfd, cons, pid;
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switch(rfork(RFFDG|RFPROC|RFNAMEG|RFENVG|RFNOTEG|RFNOWAIT)){
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case -1:
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fprint(2, "%s: can't fork: %r\n", argv0);
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return -1;
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case 0:
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break;
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default:
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exits(0);
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}
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srv = rdenv("/env/wsys");
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if(srv == 0){
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mntsrv = rdenv("/mnt/term/env/wsys");
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if(mntsrv == 0){
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fprint(2, "%s: can't find $wsys\n", argv0);
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return -1;
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}
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srv = malloc(strlen(mntsrv)+10);
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sprint(srv, "/mnt/term%s", mntsrv);
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free(mntsrv);
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pid = 0; /* can't send notes to remote processes! */
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}else
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pid = getpid();
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USED(pid);
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srvfd = open(srv, ORDWR);
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free(srv);
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if(srvfd == -1){
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fprint(2, "%s: can't open %s: %r\n", argv0, srv);
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return -1;
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}
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sprint(spec, "new -r %s", win);
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if(mount(srvfd, -1, "/mnt/wsys", 0, spec) == -1){
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fprint(2, "%s: can't mount /mnt/wsys: %r (spec=%s)\n", argv0, spec);
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return -1;
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}
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close(srvfd);
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unmount("/mnt/acme", "/dev");
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bind("/mnt/wsys", "/dev", MBEFORE);
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cons = open("/dev/cons", OREAD);
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if(cons==-1){
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NoCons:
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fprint(2, "%s: can't open /dev/cons: %r", argv0);
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return -1;
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}
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dup(cons, 0);
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close(cons);
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cons = open("/dev/cons", OWRITE);
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if(cons==-1)
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goto NoCons;
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dup(cons, 1);
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dup(cons, 2);
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close(cons);
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return 0;
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}
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Rectangle
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screenrect(void)
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{
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int fd;
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char buf[12*5];
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fd = open("/dev/screen", OREAD);
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if(fd == -1)
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fd=open("/mnt/term/dev/screen", OREAD);
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if(fd == -1){
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fprint(2, "%s: can't open /dev/screen: %r\n", argv0);
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exits("window read");
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}
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if(read(fd, buf, sizeof buf) != sizeof buf){
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fprint(2, "%s: can't read /dev/screen: %r\n", argv0);
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exits("screen read");
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}
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close(fd);
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return Rect(atoi(buf+12), atoi(buf+24), atoi(buf+36), atoi(buf+48));
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}
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int
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postnote(int group, int pid, char *note)
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{
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char file[128];
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int f, r;
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switch(group) {
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case PNPROC:
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sprint(file, "/proc/%d/note", pid);
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break;
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case PNGROUP:
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sprint(file, "/proc/%d/notepg", pid);
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break;
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case PNCTL:
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sprint(file, "/proc/%d/ctl", pid);
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break;
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default:
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return -1;
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}
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f = open(file, OWRITE);
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if(f < 0)
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return -1;
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r = strlen(note);
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if(write(f, note, r) != r) {
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close(f);
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return -1;
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}
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close(f);
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return 0;
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}
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