0aa0096066
This patch increases the buffer sizes in vt(1) to reduce the latency from the roundtrip between terminal and cpu server.
1459 lines
25 KiB
C
1459 lines
25 KiB
C
#include <u.h>
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#include <libc.h>
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#include <draw.h>
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#include "cons.h"
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#include <thread.h>
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#include <fcall.h>
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#include <9p.h>
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#include <bio.h>
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#include <mouse.h>
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#include <keyboard.h>
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#include <plumb.h>
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enum menuact2{
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Mbackup,
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Mforward,
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Mreset,
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Mpaste,
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Msnarf,
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Mplumb,
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Mpage,
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};
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enum menuact3{
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M24x80,
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Mcrnl,
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Mnl,
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Mraw,
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Mblocksel,
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Mexit,
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};
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char *menutext2[] = {
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[Mbackup] "backup",
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[Mforward] "forward",
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[Mreset] "reset",
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[Mpaste] "paste",
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[Msnarf] "snarf",
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[Mplumb] "plumb",
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[Mpage] "page",
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nil
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};
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char *menutext3[] = {
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[M24x80] "24x80",
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[Mcrnl] "crnl",
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[Mnl] "nl",
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[Mraw] "raw",
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[Mblocksel] "blocksel",
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[Mexit] "exit",
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nil
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};
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/* variables associated with the screen */
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int x, y; /* character positions */
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Rune *backp;
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int backc;
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int nbacklines;
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int xmax, ymax;
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int blocked;
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int winchgen;
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int resize_flag = 1;
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int pagemode;
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int olines;
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int peekc;
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int blocksel = 0;
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int cursoron = 1;
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int chording = 0;
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int hostclosed = 0;
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Menu menu2;
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Menu menu3;
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Rune *histp;
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Rune hist[HISTSIZ];
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Rune *onscreenrbuf;
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uchar *onscreenabuf;
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uchar *onscreencbuf;
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#define onscreenr(x, y) &onscreenrbuf[((y)*(xmax+2) + (x))]
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#define onscreena(x, y) &onscreenabuf[((y)*(xmax+2) + (x))]
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#define onscreenc(x, y) &onscreencbuf[((y)*(xmax+2) + (x))]
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uchar *screenchangebuf;
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uint scrolloff;
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#define screenchange(y) screenchangebuf[((y)+scrolloff) % (ymax+1)]
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int yscrmin, yscrmax;
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int attr, defattr;
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Rectangle selrect;
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Image *cursorsave;
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Image *bordercol;
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Image *colors[8];
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Image *hicolors[8];
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Image *red;
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Image *green;
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Image *fgcolor;
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Image *bgcolor;
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Image *fgselected;
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Image *bgselected;
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Image *highlight;
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uint rgbacolors[8] = {
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0x000000FF, /* black */
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0xAA0000FF, /* red */
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0x00AA00FF, /* green */
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0xFF5500FF, /* brown */
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0x0000FFFF, /* blue */
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0xAA00AAFF, /* purple */
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0x00AAAAFF, /* cyan */
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0x7F7F7FFF, /* white */
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};
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ulong rgbahicolors[8] = {
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0x555555FF, /* light black aka grey */
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0xFF5555FF, /* light red */
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0x55FF55FF, /* light green */
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0xFFFF55FF, /* light brown aka yellow */
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0x5555FFFF, /* light blue */
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0xFF55FFFF, /* light purple */
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0x55FFFFFF, /* light cyan */
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0xFFFFFFFF, /* light grey aka white */
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};
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/* terminal control */
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struct ttystate ttystate[2] = { {0, 1}, {0, 0} };
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Point margin;
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Point ftsize;
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Rune kbdchar;
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#define button(num) (mc->buttons == (1<<((num)-1)))
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Mousectl *mc;
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Keyboardctl *kc;
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Channel *hc[2];
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Consstate cs[1];
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int nocolor;
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int logfd = -1;
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int hostpid = -1;
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Biobuf *snarffp = 0;
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Rune *hostbuf, *hostbufp;
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char *hostin;
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char echo_input[BSIZE];
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char *echop = echo_input; /* characters to echo, after canon */
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char sendbuf[BSIZE]; /* hope you can't type ahead more than BSIZE chars */
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char *sendbufp = sendbuf;
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char *term;
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struct funckey *fk, *appfk;
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/* functions */
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int input(void);
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int waitchar(void);
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void waitio(void);
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int rcvchar(void);
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void bigscroll(void);
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void readmenu(void);
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void selecting(void);
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int selected(int, int);
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void resized(void);
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void drawcursor(void);
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void send_interrupt(void);
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int alnum(int);
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void escapedump(int,uchar *,int);
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void paste(void);
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void snarfsel(void);
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void plumbsel(void);
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static Channel *pidchan;
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static void
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runcmd(void *args)
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{
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char **argv = args;
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char *cmd;
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rfork(RFNAMEG);
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mountcons();
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rfork(RFFDG);
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close(0);
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open("/dev/cons", OREAD);
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close(1);
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open("/dev/cons", OWRITE);
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dup(1, 2);
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cmd = nil;
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while(*argv != nil){
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if(cmd == nil)
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cmd = strdup(*argv);
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else
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cmd = smprint("%s %q", cmd, *argv);
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argv++;
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}
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procexecl(pidchan, "/bin/rc", "rcX", cmd == nil ? nil : "-c", cmd, nil);
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sysfatal("%r");
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}
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void
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send_interrupt(void)
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{
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if(hostpid > 0)
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postnote(PNGROUP, hostpid, "interrupt");
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}
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void
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sendnchars(int n, char *p)
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{
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if((n = utfnlen(p, n)) < 1)
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return;
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hostin = smprint("%.*s", n, p);
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while(hostin != nil){
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if(nbsendp(hc[0], hostin)){
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hostin = nil;
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break;
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}
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drawcursor();
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waitio();
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if(resize_flag)
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resized();
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}
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}
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static void
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shutdown(void)
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{
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send_interrupt();
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threadexitsall(nil);
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}
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static void
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catch(void*, char*)
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{
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shutdown();
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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 [-2abcrx] [-f font] [-l logfile] [cmd...]\n", argv0);
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exits("usage");
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}
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void
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threadmain(int argc, char **argv)
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{
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int rflag;
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int i, blkbg;
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char *fontname, *p;
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fontname = nil;
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fk = ansifk;
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term = "vt100";
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blkbg = 0;
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rflag = 0;
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attr = defattr;
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ARGBEGIN{
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case '2':
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fk = vt220fk;
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term = "vt220";
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break;
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case 'a':
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term = "ansi";
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break;
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case 'b':
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blkbg = 1; /* e.g., for linux colored output */
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break;
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case 'c':
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nocolor = 1;
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break;
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case 'f':
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fontname = EARGF(usage());
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break;
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case 'l':
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p = EARGF(usage());
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logfd = create(p, OWRITE|OCEXEC, 0666);
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if(logfd < 0)
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sysfatal("could not create log file: %s: %r", p);
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break;
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case 'x':
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fk = vt220fk;
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term = "xterm";
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break;
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case 'r':
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rflag = 1;
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break;
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default:
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usage();
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break;
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}ARGEND;
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if(rfork(RFENVG) < 0)
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sysfatal("rfork: %r");
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quotefmtinstall();
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notify(catch);
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atexit(shutdown);
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if(initdraw(0, fontname, term) < 0)
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sysfatal("inidraw failed: %r");
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if((mc = initmouse("/dev/mouse", screen)) == nil)
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sysfatal("initmouse failed: %r");
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if((kc = initkeyboard("/dev/cons")) == nil)
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sysfatal("initkeyboard failed: %r");
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hc[0] = chancreate(sizeof(char*), 256); /* input to host */
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hc[1] = chancreate(sizeof(Rune*), 256); /* output from host */
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cs->raw = rflag;
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histp = hist;
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menu2.item = menutext2;
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menu3.item = menutext3;
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pagemode = 0;
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blocked = 0;
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ftsize.y = font->height;
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ftsize.x = stringwidth(font, "m");
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red = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DRed);
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green = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DGreen);
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bordercol = allocimage(display, Rect(0,0,1,1), screen->chan, 1, 0xCCCCCCCC);
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highlight = allocimage(display, Rect(0,0,1,1), CHAN1(CAlpha,8), 1, 0x80);
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for(i=0; i<8; i++){
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colors[i] = allocimage(display, Rect(0,0,1,1), screen->chan, 1,
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rgbacolors[i]);
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hicolors[i] = allocimage(display, Rect(0,0,1,1), screen->chan, 1,
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rgbahicolors[i]);
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}
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bgcolor = (blkbg? display->black: display->white);
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fgcolor = (blkbg? display->white: display->black);
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bgselected = allocimage(display, Rect(0,0,1,1), CMAP8, 1, blkbg ? 0x333333FF : 0xCCCCCCFF);
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fgselected = allocimage(display, Rect(0,0,1,1), CMAP8, 1, blkbg ? 0xCCCCCCFF : 0x333333FF);
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resized();
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pidchan = chancreate(sizeof(int), 0);
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proccreate(runcmd, argv, 16*1024);
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hostpid = recvul(pidchan);
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emulate();
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}
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Image*
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bgcol(int a, int c, int sel)
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{
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if(sel)
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return bgselected;
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if(nocolor || (c & (1<<0)) == 0){
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if(a & TReverse)
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return fgcolor;
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return bgcolor;
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}
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if((a & TReverse) != 0)
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c >>= 4;
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return colors[(c>>1)&7];
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}
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Image*
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fgcol(int a, int c, int sel)
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{
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if(sel)
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return fgselected;
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if(nocolor || (c & (1<<4)) == 0){
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if(a & TReverse)
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return bgcolor;
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return fgcolor;
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}
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if((a & TReverse) == 0)
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c >>= 4;
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if(a & THighIntensity)
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return hicolors[(c>>1)&7];
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return colors[(c>>1)&7];
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}
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void
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hidecursor(void)
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{
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if(cursorsave == nil)
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return;
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draw(screen, cursorsave->r, cursorsave, nil, cursorsave->r.min);
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freeimage(cursorsave);
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cursorsave = nil;
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}
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void
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drawscreen(void)
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{
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int x, y, n;
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uchar *ap, *cp;
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Image *c;
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Rune *rp;
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Point p, q;
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hidecursor();
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if(scrolloff && scrolloff <= ymax)
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draw(screen, Rpt(pt(0,0), pt(xmax+2, ymax+1-scrolloff)),
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screen, nil, pt(0, scrolloff));
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for(y = 0; y <= ymax; y++){
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if(!screenchange(y))
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continue;
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screenchange(y) = 0;
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for(x = 0; x <= xmax; x += n){
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cp = onscreenc(x, y);
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ap = onscreena(x, y);
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c = bgcol(*ap, *cp, selected(x, y));
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for(n = 1; x+n <= xmax && bgcol(ap[n], cp[n], selected(x + n, y)) == c; n++)
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;
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draw(screen, Rpt(pt(x, y), pt(x+n, y+1)), c, nil, ZP);
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}
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draw(screen, Rpt(pt(x, y), pt(x+1, y+1)), bgcolor, nil, ZP);
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for(x = 0; x <= xmax; x += n){
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rp = onscreenr(x, y);
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if(*rp == 0){
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n = 1;
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continue;
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}
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ap = onscreena(x, y);
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cp = onscreenc(x, y);
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c = fgcol(*ap, *cp, selected(x, y));
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for(n = 1; x+n <= xmax && rp[n] != 0 && fgcol(ap[n], cp[n], selected(x + n, y)) == c
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&& ((ap[n] ^ *ap) & TUnderline) == 0; n++)
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;
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p = pt(x, y);
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q = runestringn(screen, p, c, ZP, font, rp, n);
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if(*ap & TUnderline){
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p.y += font->ascent+1;
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q.y += font->ascent+2;
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draw(screen, Rpt(p, q), c, nil, ZP);
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}
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}
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if(*onscreenr(x, y) == 0)
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runestringn(screen, pt(x, y),
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bordercol,
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ZP, font, L">", 1);
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}
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scrolloff = 0;
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}
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void
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drawcursor(void)
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{
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Image *col;
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Rectangle r;
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hidecursor();
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if(cursoron == 0)
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return;
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col = (hostin != nil || blocked || hostclosed) ? red : bordercol;
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r = Rpt(pt(x, y), pt(x+1, y+1));
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cursorsave = allocimage(display, r, screen->chan, 0, DNofill);
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draw(cursorsave, r, screen, nil, r.min);
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border(screen, r, 2, col, ZP);
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}
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void
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clear(int x1, int y1, int x2, int y2)
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{
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int c = (attr & 0x0F00)>>8; /* bgcolor */
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if(y1 < 0 || y1 > ymax || x1 < 0 || x1 > xmax || y2 <= y1 || x2 <= x1)
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return;
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while(y1 < y2){
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screenchange(y1) = 1;
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if(x1 < x2){
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memset(onscreenr(x1, y1), 0, (x2-x1)*sizeof(Rune));
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memset(onscreena(x1, y1), 0, x2-x1);
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memset(onscreenc(x1, y1), c, x2-x1);
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}
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if(x2 > xmax)
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*onscreenr(xmax+1, y1) = '\n';
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y1++;
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}
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}
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void
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newline(void)
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{
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if(x > xmax)
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*onscreenr(xmax+1, y) = 0; /* wrap arround, remove hidden newline */
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nbacklines--;
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if(y >= yscrmax) {
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y = yscrmax;
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if(pagemode && olines >= yscrmax){
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blocked = 1;
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return;
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}
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scroll(yscrmin+1, yscrmax+1, yscrmin, yscrmax);
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} else
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y++;
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olines++;
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}
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int
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get_next_char(void)
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{
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int c = peekc;
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peekc = 0;
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if(c > 0)
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return(c);
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while(c <= 0) {
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if(backp) {
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c = *backp;
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if(c && nbacklines >= 0){
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backp++;
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if(backp >= &hist[HISTSIZ])
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backp = hist;
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return(c);
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}
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backp = 0;
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}
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c = waitchar();
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if(c > 0 && logfd >= 0)
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fprint(logfd, "%C", (Rune)c);
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}
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*histp++ = c;
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if(histp >= &hist[HISTSIZ])
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histp = hist;
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*histp = '\0';
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return(c);
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}
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char*
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backrune(char *start, char *cp)
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{
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char *ep;
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ep = cp;
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cp -= UTFmax;
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if(cp < start)
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cp = start;
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while(cp < ep){
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Rune r;
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int n;
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n = chartorune(&r, cp);
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if(cp + n >= ep)
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break;
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cp += n;
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}
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return cp;
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}
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int
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canon(char *ep, Rune c)
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{
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switch(c) {
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case Kdown:
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case Kpgdown:
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return SCROLL;
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case '\b':
|
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if(sendbufp > sendbuf){
|
|
sendbufp = backrune(sendbuf, sendbufp);
|
|
*ep++ = '\b';
|
|
*ep++ = ' ';
|
|
*ep++ = '\b';
|
|
}
|
|
break;
|
|
case 0x15: /* ^U line kill */
|
|
sendbufp = sendbuf;
|
|
*ep++ = '^';
|
|
*ep++ = 'U';
|
|
*ep++ = '\n';
|
|
break;
|
|
case 0x17: /* ^W word kill */
|
|
while(sendbufp > sendbuf && !alnum(*sendbufp)) {
|
|
sendbufp = backrune(sendbuf, sendbufp);
|
|
*ep++ = '\b';
|
|
*ep++ = ' ';
|
|
*ep++ = '\b';
|
|
}
|
|
while(sendbufp > sendbuf && alnum(*sendbufp)) {
|
|
sendbufp = backrune(sendbuf, sendbufp);
|
|
*ep++ = '\b';
|
|
*ep++ = ' ';
|
|
*ep++ = '\b';
|
|
}
|
|
break;
|
|
case '\177': /* interrupt */
|
|
sendbufp = sendbuf;
|
|
send_interrupt();
|
|
return(NEWLINE);
|
|
case '\021': /* quit */
|
|
case '\r':
|
|
case '\n':
|
|
if(sendbufp < &sendbuf[BSIZE])
|
|
*sendbufp++ = '\n';
|
|
sendnchars((int)(sendbufp-sendbuf), sendbuf);
|
|
sendbufp = sendbuf;
|
|
if(c == '\n' || c == '\r')
|
|
*ep++ = '\n';
|
|
*ep = 0;
|
|
return(NEWLINE);
|
|
case '\004': /* EOT */
|
|
if(sendbufp == sendbuf) {
|
|
sendnchars(0,sendbuf);
|
|
*ep = 0;
|
|
return(NEWLINE);
|
|
}
|
|
/* fall through */
|
|
default:
|
|
if(sendbufp < &sendbuf[BSIZE-UTFmax])
|
|
sendbufp += runetochar(sendbufp, &c);
|
|
ep += runetochar(ep, &c);
|
|
break;
|
|
}
|
|
*ep = 0;
|
|
return(OTHER);
|
|
}
|
|
|
|
char*
|
|
lookfk(struct funckey *fk, char *name)
|
|
{
|
|
int i;
|
|
|
|
for(i=0; fk[i].name; i++){
|
|
if(strcmp(name, fk[i].name)==0)
|
|
return fk[i].sequence;
|
|
}
|
|
return nil;
|
|
}
|
|
|
|
int
|
|
sendfk(char *name)
|
|
{
|
|
char *s = lookfk(appfk != nil ? appfk : fk, name);
|
|
if(s == nil && appfk != nil)
|
|
s = lookfk(fk, name);
|
|
if(s != nil){
|
|
sendnchars(strlen(s), s);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
input(void)
|
|
{
|
|
static char echobuf[4*BSIZE];
|
|
|
|
Again:
|
|
if(resize_flag)
|
|
resized();
|
|
if(backp)
|
|
return(0);
|
|
if(snarffp) {
|
|
int c;
|
|
|
|
if((c = Bgetrune(snarffp)) < 0) {
|
|
Bterm(snarffp);
|
|
snarffp = nil;
|
|
goto Again;
|
|
}
|
|
kbdchar = c;
|
|
}
|
|
if(kbdchar) {
|
|
if(backc){
|
|
backc = 0;
|
|
backup(backc);
|
|
}
|
|
if(blocked)
|
|
resize_flag = 1;
|
|
if(cs->raw) {
|
|
switch(kbdchar){
|
|
case Kins:
|
|
if(!sendfk("insert"))
|
|
goto Send;
|
|
break;
|
|
case Kdel:
|
|
if(!sendfk("delete"))
|
|
goto Send;
|
|
break;
|
|
case Khome:
|
|
if(!sendfk("home"))
|
|
goto Send;
|
|
break;
|
|
case Kend:
|
|
if(!sendfk("end"))
|
|
goto Send;
|
|
break;
|
|
|
|
case Kpgup:
|
|
sendfk("page up");
|
|
break;
|
|
case Kpgdown:
|
|
sendfk("page down");
|
|
break;
|
|
|
|
case Kup:
|
|
sendfk("up key");
|
|
break;
|
|
case Kdown:
|
|
sendfk("down key");
|
|
break;
|
|
case Kleft:
|
|
sendfk("left key");
|
|
break;
|
|
case Kright:
|
|
sendfk("right key");
|
|
break;
|
|
|
|
case KF|1:
|
|
sendfk("F1");
|
|
break;
|
|
case KF|2:
|
|
sendfk("F2");
|
|
break;
|
|
case KF|3:
|
|
sendfk("F3");
|
|
break;
|
|
case KF|4:
|
|
sendfk("F4");
|
|
break;
|
|
case KF|5:
|
|
sendfk("F5");
|
|
break;
|
|
case KF|6:
|
|
sendfk("F6");
|
|
break;
|
|
case KF|7:
|
|
sendfk("F7");
|
|
break;
|
|
case KF|8:
|
|
sendfk("F8");
|
|
break;
|
|
case KF|9:
|
|
sendfk("F9");
|
|
break;
|
|
case KF|10:
|
|
sendfk("F10");
|
|
break;
|
|
case KF|11:
|
|
sendfk("F11");
|
|
break;
|
|
case KF|12:
|
|
sendfk("F12");
|
|
break;
|
|
|
|
case '\n':
|
|
echobuf[0] = '\r';
|
|
sendnchars(1, echobuf);
|
|
break;
|
|
case '\r':
|
|
echobuf[0] = '\n';
|
|
sendnchars(1, echobuf);
|
|
break;
|
|
default:
|
|
Send:
|
|
sendnchars(runetochar(echobuf, &kbdchar), echobuf);
|
|
break;
|
|
}
|
|
} else {
|
|
switch(canon(echobuf, kbdchar)){
|
|
case SCROLL:
|
|
if(!blocked)
|
|
bigscroll();
|
|
break;
|
|
default:
|
|
strcat(echo_input,echobuf);
|
|
}
|
|
}
|
|
blocked = 0;
|
|
kbdchar = 0;
|
|
goto Again;
|
|
} else if(nbrecv(kc->c, &kbdchar))
|
|
goto Again;
|
|
if(!blocked){
|
|
if(host_avail())
|
|
return(rcvchar());
|
|
free(hostbuf);
|
|
hostbufp = hostbuf = nbrecvp(hc[1]);
|
|
if(host_avail() && nrand(32))
|
|
return(rcvchar());
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|
|
int
|
|
waitchar(void)
|
|
{
|
|
int r;
|
|
|
|
for(;;) {
|
|
r = input();
|
|
if(r != -1)
|
|
return r;
|
|
drawscreen();
|
|
drawcursor();
|
|
waitio();
|
|
}
|
|
}
|
|
|
|
void
|
|
waitio(void)
|
|
{
|
|
enum { AMOUSE, ARESIZE, AKBD, AHOSTIN, AHOSTOUT, AEND, };
|
|
Alt a[AEND+1] = {
|
|
{ mc->c, &mc->Mouse, CHANRCV },
|
|
{ mc->resizec, nil, CHANRCV },
|
|
{ kc->c, &kbdchar, CHANRCV },
|
|
{ hc[0], &hostin, CHANSND },
|
|
{ hc[1], &hostbuf, CHANRCV },
|
|
{ nil, nil, CHANEND },
|
|
};
|
|
if(kbdchar != 0)
|
|
a[AKBD].op = CHANNOP;
|
|
if(hostin == nil)
|
|
a[AHOSTIN].op = CHANNOP;
|
|
if(blocked)
|
|
a[AHOSTOUT].op = CHANNOP;
|
|
else if(hostbuf != nil)
|
|
a[AHOSTOUT].op = CHANNOBLK;
|
|
Next:
|
|
if(display->bufp > display->buf)
|
|
flushimage(display, 1);
|
|
switch(alt(a)){
|
|
case AMOUSE:
|
|
if(button(1) || chording)
|
|
selecting();
|
|
else if(button(2) || button(3))
|
|
readmenu();
|
|
else if(button(4))
|
|
backup(backc+1);
|
|
else if(button(5) && backc > 0)
|
|
backup(--backc);
|
|
else if(resize_flag == 0)
|
|
goto Next;
|
|
break;
|
|
case ARESIZE:
|
|
resize_flag = 2;
|
|
break;
|
|
case AHOSTIN:
|
|
hostin = nil;
|
|
break;
|
|
case AHOSTOUT:
|
|
hostbufp = hostbuf;
|
|
if(hostbuf == nil)
|
|
hostclosed = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
putenvint(char *name, int x)
|
|
{
|
|
char buf[20];
|
|
|
|
snprint(buf, sizeof buf, "%d", x);
|
|
putenv(name, buf);
|
|
}
|
|
|
|
void
|
|
exportsize(void)
|
|
{
|
|
putenvint("WINCH", ++winchgen);
|
|
putenvint("XPIXELS", (xmax+1)*ftsize.x);
|
|
putenvint("YPIXELS", (ymax+1)*ftsize.y);
|
|
putenvint("LINES", ymax+1);
|
|
putenvint("COLS", xmax+1);
|
|
putenv("TERM", term);
|
|
if(cs->winch)
|
|
send_interrupt();
|
|
}
|
|
|
|
void
|
|
setdim(int ht, int wid)
|
|
{
|
|
int fd;
|
|
|
|
if(wid > 0) xmax = wid-1;
|
|
if(ht > 0) ymax = ht-1;
|
|
|
|
x = 0;
|
|
y = 0;
|
|
yscrmin = 0;
|
|
yscrmax = ymax;
|
|
olines = 0;
|
|
|
|
margin.x = (Dx(screen->r) - (xmax+1)*ftsize.x) / 2;
|
|
margin.y = (Dy(screen->r) - (ymax+1)*ftsize.y) / 2;
|
|
|
|
free(screenchangebuf);
|
|
screenchangebuf = emalloc9p(ymax+1);
|
|
scrolloff = 0;
|
|
selrect = ZR;
|
|
|
|
free(onscreenrbuf);
|
|
onscreenrbuf = emalloc9p((ymax+1)*(xmax+2)*sizeof(Rune));
|
|
free(onscreenabuf);
|
|
onscreenabuf = emalloc9p((ymax+1)*(xmax+2));
|
|
free(onscreencbuf);
|
|
onscreencbuf = emalloc9p((ymax+1)*(xmax+2));
|
|
clear(0,0,xmax+1,ymax+1);
|
|
|
|
draw(screen, screen->r, bgcolor, nil, ZP);
|
|
|
|
if(resize_flag || backc)
|
|
return;
|
|
|
|
exportsize();
|
|
|
|
fd = open("/dev/wctl", OWRITE);
|
|
if(fd >= 0){
|
|
ht = (ymax+1) * ftsize.y + 2*INSET + 2*Borderwidth;
|
|
wid = (xmax+1) * ftsize.x + ftsize.x + 2*INSET + 2*Borderwidth;
|
|
fprint(fd, "resize -dx %d -dy %d\n", wid, ht);
|
|
close(fd);
|
|
}
|
|
}
|
|
|
|
void
|
|
resized(void)
|
|
{
|
|
if(resize_flag > 1 && getwindow(display, Refnone) < 0){
|
|
fprint(2, "can't reattach to window: %r\n");
|
|
exits("can't reattach to window");
|
|
}
|
|
setdim((Dy(screen->r) - 2*INSET)/ftsize.y, (Dx(screen->r) - 2*INSET - ftsize.x)/ftsize.x);
|
|
exportsize();
|
|
if(resize_flag > 1)
|
|
backup(backc);
|
|
resize_flag = 0;
|
|
werrstr(""); /* clear spurious error messages */
|
|
}
|
|
|
|
char*
|
|
selrange(char *d, int x0, int y0, int x1, int y1)
|
|
{
|
|
Rune *s, *e;
|
|
int z, p;
|
|
|
|
s = onscreenr(x0, y0);
|
|
e = onscreenr(x1, y1);
|
|
for(z = p = 0; s < e; s++){
|
|
if(*s){
|
|
if(*s == '\n')
|
|
z = p = 0;
|
|
else if(p++ == 0){
|
|
while(z-- > 0) *d++ = ' ';
|
|
}
|
|
d += runetochar(d, s);
|
|
} else {
|
|
z++;
|
|
}
|
|
}
|
|
return d;
|
|
}
|
|
|
|
char*
|
|
selection(void)
|
|
{
|
|
char *s, *p;
|
|
int y;
|
|
|
|
/* generous, but we can spare a few bytes for a few microseconds */
|
|
s = p = malloc(UTFmax*(xmax+1)*(Dy(selrect)+1)+1);
|
|
if(s == nil)
|
|
return nil;
|
|
if(blocksel){
|
|
for(y = selrect.min.y; y <= selrect.max.y; y++){
|
|
p = selrange(p, selrect.min.x, y, selrect.max.x, y);
|
|
*p++ = '\n';
|
|
}
|
|
} else {
|
|
p = selrange(p, selrect.min.x, selrect.min.y, selrect.max.x, selrect.max.y);
|
|
}
|
|
*p = 0;
|
|
return s;
|
|
}
|
|
|
|
void
|
|
snarfsel(void)
|
|
{
|
|
Biobuf *b;
|
|
char *s;
|
|
|
|
if((s = selection()) == nil)
|
|
return;
|
|
if((b = Bopen("/dev/snarf", OWRITE|OTRUNC)) == nil){
|
|
free(s);
|
|
return;
|
|
}
|
|
Bprint(b, "%s", s);
|
|
Bterm(b);
|
|
free(s);
|
|
}
|
|
|
|
void
|
|
plumbsel(void)
|
|
{
|
|
char *s, wdir[1024];
|
|
int plumb;
|
|
|
|
s = selection();
|
|
if(s == nil || *s == 0)
|
|
return;
|
|
if(getwd(wdir, sizeof wdir) == nil){
|
|
free(s);
|
|
return;
|
|
}
|
|
if((plumb = plumbopen("send", OWRITE)) < 0){
|
|
free(s);
|
|
return;
|
|
}
|
|
plumbsendtext(plumb, "vt", nil, wdir, s);
|
|
close(plumb);
|
|
free(s);
|
|
}
|
|
|
|
void
|
|
paste(void)
|
|
{
|
|
if(snarffp == nil)
|
|
snarffp = Bopen("/dev/snarf",OREAD);
|
|
}
|
|
|
|
int
|
|
isalnum(Rune c)
|
|
{
|
|
/*
|
|
* Hard to get absolutely right. Use what we know about ASCII
|
|
* and assume anything above the Latin control characters is
|
|
* potentially an alphanumeric.
|
|
*/
|
|
if(c <= ' ')
|
|
return 0;
|
|
if(0x7F<=c && c<=0xA0)
|
|
return 0;
|
|
if(utfrune("!\"#$%&'()*+,-./:;<=>?@[\\]^`{|}~", c))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
isspace(Rune c)
|
|
{
|
|
return c == 0 || c == ' ' || c == '\t' ||
|
|
c == '\n' || c == '\r' || c == '\v';
|
|
}
|
|
|
|
void
|
|
unselect(void)
|
|
{
|
|
int y;
|
|
|
|
for(y = selrect.min.y; y <= selrect.max.y; y++)
|
|
screenchange(y) = 1;
|
|
selrect = ZR;
|
|
}
|
|
|
|
int
|
|
inmode(Rune r, int mode)
|
|
{
|
|
return (mode == 1) ? isalnum(r) : r && !isspace(r);
|
|
}
|
|
|
|
/*
|
|
* Selects different things based on mode.
|
|
* 0: selects swept-over text.
|
|
* 1: selects alphanumeric segment
|
|
* 2: selects non-whitespace segment.
|
|
*/
|
|
void
|
|
select(Point p, Point q, int mode)
|
|
{
|
|
if(onscreenr(p.x, p.y) > onscreenr(q.x, q.y)){
|
|
select(q, p, mode);
|
|
return;
|
|
}
|
|
unselect();
|
|
if(p.y < 0 || p.y > ymax)
|
|
return;
|
|
if(p.y < 0){
|
|
p.y = 0;
|
|
if(!blocksel) p.x = 0;
|
|
}
|
|
if(q.y > ymax){
|
|
q.y = ymax;
|
|
if(!blocksel) q.x = xmax+1;
|
|
}
|
|
if(mode != 0 && eqpt(p, q)){
|
|
while(p.x > 0 && inmode(*onscreenr(p.x-1, p.y), mode))
|
|
p.x--;
|
|
while(q.x <= xmax && inmode(*onscreenr(q.x, q.y), mode))
|
|
q.x++;
|
|
if(p.x != q.x)
|
|
mode = 0;
|
|
}
|
|
if(p.x < 0 || mode)
|
|
p.x = 0;
|
|
if(q.x > xmax+1 || mode)
|
|
q.x = xmax+1;
|
|
selrect = Rpt(p, q);
|
|
for(; p.y <= q.y; p.y++)
|
|
screenchange(p.y) = 1;
|
|
}
|
|
|
|
void
|
|
selecting(void)
|
|
{
|
|
Point p, q;
|
|
static ulong t, mode;
|
|
|
|
if(!chording){
|
|
p = pos(mc->xy);
|
|
t += mc->msec;
|
|
mode++;
|
|
do{
|
|
q = pos(mc->xy);
|
|
if(t > 200)
|
|
mode = 0;
|
|
if(mode > 2)
|
|
mode = 2;
|
|
select(p, q, mode);
|
|
drawscreen();
|
|
readmouse(mc);
|
|
} while(button(1));
|
|
}
|
|
if(mc->buttons != chording){
|
|
switch(mc->buttons & 0x7){
|
|
case 0: /* nothing */ break;
|
|
case 3: snarfsel(); break;
|
|
case 5: paste(); break;
|
|
}
|
|
}
|
|
drawscreen();
|
|
t = -mc->msec;
|
|
chording = mc->buttons;
|
|
}
|
|
|
|
int
|
|
selected(int x, int y)
|
|
{
|
|
int s;
|
|
|
|
s = y >= selrect.min.y && y <= selrect.max.y;
|
|
if (blocksel)
|
|
s = s && x >= selrect.min.x && x < selrect.max.x;
|
|
else{
|
|
if(y == selrect.min.y)
|
|
s = s && x >= selrect.min.x;
|
|
if(y == selrect.max.y)
|
|
s = s && x < selrect.max.x;
|
|
if(y > selrect.min.y && y < selrect.max.y)
|
|
s = 1;
|
|
}
|
|
return s;
|
|
}
|
|
|
|
void
|
|
readmenu(void)
|
|
{
|
|
Point p;
|
|
|
|
p = pos(mc->xy);
|
|
if(button(3)) {
|
|
menu3.item[1] = ttystate[cs->raw].crnl ? "cr" : "crnl";
|
|
menu3.item[2] = ttystate[cs->raw].nlcr ? "nl" : "nlcr";
|
|
menu3.item[3] = cs->raw ? "cooked" : "raw";
|
|
menu3.item[4] = blocksel ? "linesel" : "blocksel";
|
|
|
|
switch(menuhit(3, mc, &menu3, nil)) {
|
|
case M24x80: /* 24x80 */
|
|
setdim(24, 80);
|
|
backup(backc);
|
|
return;
|
|
case Mcrnl: /* newline after cr? */
|
|
ttystate[cs->raw].crnl = !ttystate[cs->raw].crnl;
|
|
return;
|
|
case Mnl: /* cr after newline? */
|
|
ttystate[cs->raw].nlcr = !ttystate[cs->raw].nlcr;
|
|
return;
|
|
case Mraw: /* switch raw mode */
|
|
cs->raw = !cs->raw;
|
|
return;
|
|
case Mblocksel:
|
|
unselect();
|
|
blocksel = !blocksel;
|
|
return;
|
|
case Mexit:
|
|
exits(0);
|
|
}
|
|
return;
|
|
}
|
|
|
|
menu2.item[Mpage] = pagemode? "scroll": "page";
|
|
|
|
switch(menuhit(2, mc, &menu2, nil)) {
|
|
case Mbackup: /* back up */
|
|
backup(backc+1);
|
|
return;
|
|
|
|
case Mforward: /* move forward */
|
|
if(backc > 0)
|
|
backup(--backc);
|
|
return;
|
|
|
|
case Mreset: /* reset */
|
|
backc = 0;
|
|
backup(0);
|
|
return;
|
|
|
|
case Mpaste: /* paste the snarf buffer */
|
|
paste();
|
|
return;
|
|
|
|
case Msnarf: /* send the snarf buffer */
|
|
snarfsel();
|
|
return;
|
|
|
|
case Mplumb:
|
|
plumbsel();
|
|
return;
|
|
|
|
case Mpage: /* pause and clear at end of screen */
|
|
pagemode = 1-pagemode;
|
|
if(blocked && !pagemode) {
|
|
resize_flag = 1;
|
|
blocked = 0;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
void
|
|
backup(int count)
|
|
{
|
|
Rune *cp;
|
|
int left, n;
|
|
|
|
unselect();
|
|
|
|
resize_flag = 1;
|
|
if(count == 0 && !pagemode) {
|
|
n = ymax;
|
|
nbacklines = HISTSIZ; /* make sure we scroll to the very end */
|
|
} else{
|
|
n = 3*(count+1)*ymax/4;
|
|
nbacklines = ymax-1;
|
|
}
|
|
cp = histp;
|
|
left = 1;
|
|
while (n >= 0) {
|
|
cp--;
|
|
if(cp < hist)
|
|
cp = &hist[HISTSIZ-1];
|
|
if(*cp == '\0') {
|
|
left = 0;
|
|
break;
|
|
}
|
|
if(*cp == '\n')
|
|
n--;
|
|
}
|
|
cp++;
|
|
if(cp >= &hist[HISTSIZ])
|
|
cp = hist;
|
|
backp = cp;
|
|
if(left)
|
|
backc = count;
|
|
}
|
|
|
|
Point
|
|
pt(int x, int y)
|
|
{
|
|
return addpt(screen->r.min, Pt(x*ftsize.x+margin.x,y*ftsize.y+margin.y));
|
|
}
|
|
|
|
Point
|
|
pos(Point pt)
|
|
{
|
|
pt.x -= screen->r.min.x + margin.x;
|
|
pt.y -= screen->r.min.y + margin.y;
|
|
pt.x /= ftsize.x;
|
|
pt.y /= ftsize.y;
|
|
if(pt.x < 0)
|
|
pt.x = 0;
|
|
else if(pt.x > xmax+1)
|
|
pt.x = xmax+1;
|
|
if(pt.y < 0)
|
|
pt.y = 0;
|
|
else if(pt.y > ymax+1)
|
|
pt.y = ymax+1;
|
|
return pt;
|
|
}
|
|
|
|
void
|
|
shift(int x1, int y, int x2, int w)
|
|
{
|
|
if(y < 0 || y > ymax || x1 < 0 || x2 < 0 || w <= 0)
|
|
return;
|
|
|
|
if(x1+w > xmax+1)
|
|
w = xmax+1 - x1;
|
|
if(x2+w > xmax+1)
|
|
w = xmax+1 - x2;
|
|
|
|
screenchange(y) = 1;
|
|
memmove(onscreenr(x1, y), onscreenr(x2, y), w*sizeof(Rune));
|
|
memmove(onscreena(x1, y), onscreena(x2, y), w);
|
|
memmove(onscreenc(x1, y), onscreenc(x2, y), w);
|
|
}
|
|
|
|
void
|
|
scroll(int sy, int ly, int dy, int cy) /* source, limit, dest, which line to clear */
|
|
{
|
|
int n, d, i;
|
|
|
|
if(sy < 0 || sy > ymax || dy < 0 || dy > ymax)
|
|
return;
|
|
|
|
n = ly - sy;
|
|
if(sy + n > ymax+1)
|
|
n = ymax+1 - sy;
|
|
if(dy + n > ymax+1)
|
|
n = ymax+1 - dy;
|
|
|
|
d = sy - dy;
|
|
if(n > 0 && d != 0){
|
|
if(d > 0 && dy == 0 && n >= ymax){
|
|
scrolloff += d;
|
|
} else {
|
|
for(i = 0; i < n; i++)
|
|
screenchange(dy+i) = 1;
|
|
}
|
|
memmove(onscreenr(0, dy), onscreenr(0, sy), n*(xmax+2)*sizeof(Rune));
|
|
memmove(onscreena(0, dy), onscreena(0, sy), n*(xmax+2));
|
|
memmove(onscreenc(0, dy), onscreenc(0, sy), n*(xmax+2));
|
|
}
|
|
|
|
/* move selection */
|
|
selrect.min.y -= d;
|
|
selrect.max.y -= d;
|
|
select(selrect.min, selrect.max, 0);
|
|
|
|
clear(0, cy, xmax+1, cy+1);
|
|
}
|
|
|
|
void
|
|
bigscroll(void) /* scroll up half a page */
|
|
{
|
|
int half = ymax/3;
|
|
|
|
if(x == 0 && y == 0)
|
|
return;
|
|
if(y < half) {
|
|
clear(0, 0, xmax+1, ymax+1);
|
|
scrolloff = 0;
|
|
x = y = 0;
|
|
return;
|
|
}
|
|
scroll(half, ymax+1, 0, ymax);
|
|
clear(0, y-half+1, xmax+1, ymax+1);
|
|
|
|
y -= half;
|
|
if(olines)
|
|
olines -= half;
|
|
}
|
|
|
|
int
|
|
number(Rune *p, int *got)
|
|
{
|
|
int c, n = 0;
|
|
|
|
if(got)
|
|
*got = 0;
|
|
while ((c = get_next_char()) >= '0' && c <= '9'){
|
|
if(got)
|
|
*got = 1;
|
|
n = n*10 + c - '0';
|
|
}
|
|
*p = c;
|
|
return(n);
|
|
}
|
|
|
|
/* stubs */
|
|
|
|
int
|
|
host_avail(void)
|
|
{
|
|
if(*echop != 0 && fullrune(echop, strlen(echop)))
|
|
return 1;
|
|
if(hostbuf == nil)
|
|
return 0;
|
|
return *hostbufp != 0;
|
|
}
|
|
|
|
int
|
|
rcvchar(void)
|
|
{
|
|
Rune r;
|
|
|
|
if(*echop != 0) {
|
|
echop += chartorune(&r, echop);
|
|
if(*echop == 0) {
|
|
echop = echo_input;
|
|
*echop = 0;
|
|
}
|
|
return r;
|
|
}
|
|
return *hostbufp++;
|
|
}
|
|
|
|
void
|
|
ringbell(void){
|
|
}
|
|
|
|
int
|
|
alnum(int c)
|
|
{
|
|
if(c >= 'a' && c <= 'z')
|
|
return 1;
|
|
if(c >= 'A' && c <= 'Z')
|
|
return 1;
|
|
if(c >= '0' && c <= '9')
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
escapedump(int fd,uchar *str,int len)
|
|
{
|
|
int i;
|
|
|
|
for(i = 0; i < len; i++) {
|
|
if((str[i] < ' ' || str[i] > '\177') &&
|
|
str[i] != '\n' && str[i] != '\t') fprint(fd,"^%c",str[i]+64);
|
|
else if(str[i] == '\177') fprint(fd,"^$");
|
|
else if(str[i] == '\n') fprint(fd,"^J\n");
|
|
else fprint(fd,"%c",str[i]);
|
|
}
|
|
}
|
|
|
|
void
|
|
drawstring(Rune *str, int n)
|
|
{
|
|
screenchange(y) = 1;
|
|
memmove(onscreenr(x, y), str, n*sizeof(Rune));
|
|
memset(onscreena(x, y), attr & 0xFF, n);
|
|
memset(onscreenc(x, y), attr >> 8, n);
|
|
}
|