ref: d540dcf6834b4bec8a2d21f2fe95eccf49f97b03
dir: /appl/wm/debsrc.b/
implement DebSrc;
include "sys.m";
sys: Sys;
include "draw.m";
include "string.m";
str: String;
include "tk.m";
tk: Tk;
include "tkclient.m";
tkclient: Tkclient;
include "dialog.m";
dialog: Dialog;
include "selectfile.m";
selectfile: Selectfile;
include "debug.m";
debug: Debug;
Sym, Src, Exp, Module: import debug;
include "wmdeb.m";
include "plumbmsg.m";
plumbmsg: Plumbmsg;
Msg: import plumbmsg;
include "workdir.m";
workdir: Workdir;
include "dis.m";
dism: Dis;
mods: list of ref Mod;
tktop: ref Tk->Toplevel;
context: ref Draw->Context;
opendir = ".";
srcid: int;
xscroll, remcr: int;
sblpath := array[] of
{
("/dis/", "/appl/"),
("/dis/", "/appl/cmd/"),
# ("/dis/mux/", "/appl/mux/"),
# ("/dis/lib/", "/appl/lib/"),
# ("/dis/wm/", "/appl/wm/"),
("/dis/sh.", "/appl/cmd/sh/sh."),
};
plumbed := 0;
but3: chan of string;
plumbbind := array[] of
{
"<ButtonPress-3> {send but3 pressed}",
"<ButtonRelease-3> {send but3 released %x %y}",
"<Motion-Button-3> {}",
"<Double-Button-3> {}",
"<Double-ButtonRelease-3> {}",
};
init(acontext: ref Draw->Context,
atktop: ref Tk->Toplevel,
atkclient: Tkclient,
aselectfile: Selectfile,
adialog: Dialog,
astr: String,
adebug: Debug,
xscr: int,
rcr: int)
{
context = acontext;
tktop = atktop;
sys = load Sys Sys->PATH;
tk = load Tk Tk->PATH;
tkclient = atkclient;
selectfile = aselectfile;
dialog = adialog;
str = astr;
debug = adebug;
xscroll = xscr;
remcr = rcr;
plumbmsg = load Plumbmsg Plumbmsg->PATH;
if(plumbmsg->init(1, nil, 0) >= 0){
plumbed = 1;
workdir = load Workdir Workdir->PATH;
}
}
reinit(xscr: int, rcr: int)
{
if(xscroll == xscr && remcr == rcr)
return;
xscroll = xscr;
remcr = rcr;
for(ml := mods; ml != nil; ml = tl ml){
m := hd ml;
if(xscroll)
tkcmd(m.tk+" configure -wrap none");
else
tkcmd(m.tk+" configure -wrap char");
tkcmd("update");
fd := sys->open(m.src, sys->OREAD);
if(fd != nil)
loadfile(m.tk, fd);
}
}
#
# make a Mod with a text widget for source file src
#
loadsrc(src: string, addpath: int): ref Mod
{
if(src == "")
return nil;
m : ref Mod = nil;
for(ml := mods; ml != nil; ml = tl ml){
m = hd ml;
if(m.src == src || filesuffix(src, m.src))
break;
}
if(ml == nil || m.tk == nil){
if(ml == nil)
m = ref Mod(src, nil, nil, nil, 0, 1);
fd := sys->open(src, sys->OREAD);
if(fd == nil)
return nil;
(dir, file) := str->splitr(src, "/");
m.tk = ".t."+tk->quote(file)+string srcid++;
if(xscroll)
tkcmd("text "+m.tk+" -bd 0 -state disabled -wrap none");
else
tkcmd("text "+m.tk+" -bd 0 -state disabled");
if (but3 == nil) {
but3 = chan of string;
spawn but3proc();
}
tk->namechan(tktop, but3, "but3");
for (i := 0; i < len plumbbind; i++)
tkcmd("bind "+m.tk+" "+plumbbind[i]);
tkcmd(m.tk+" configure -insertwidth 2");
opack := packed;
packm(m);
if(!loadfile(m.tk, fd)){
fd = nil;
packm(opack);
tkcmd("destroy "+m.tk);
return nil;
}
fd = nil;
tkcmd(m.tk+" tag configure bpt -foreground #c00");
tkcmd(".m.file.menu add command -label "+src+" -command {send m open "+src+"}");
if(ml == nil)
mods = m :: mods;
if(addpath)
addsearch(dir);
}
return m;
}
addsearch(dir: string)
{
for(i := 0; i < len searchpath; i++)
if(searchpath[i] == dir)
return;
s := array[i+1] of string;
s[0:] = searchpath;
s[i] = dir;
searchpath = s;
}
#
# bring up the widget for src, if it exists
#
showstrsrc(src: string)
{
m : ref Mod = nil;
for(ml := mods; ml != nil; ml = tl ml){
m = hd ml;
if(m.src == src)
break;
}
if(ml == nil)
return;
packm(m);
}
#
# bring up the widget for module
# at position s
#
showmodsrc(m: ref Mod, s: ref Src)
{
if(s == nil)
return;
src := s.start.file;
if(src != s.stop.file)
s.stop = s.start;
if(m == nil || m.tk == nil || m.src != src){
m1 := findsrc(src);
if(m1 == nil)
return;
if(m1.dis == nil)
m1.dis = m.dis;
if(m1.sym == nil)
m1.sym = m.sym;
m = m1;
}
tkcmd(m.tk+" mark set insert "+string s.start.line+"."+string s.start.pos);
tkcmd(m.tk+" tag remove sel 0.0 end");
tkcmd(m.tk+" tag add sel insert "+string s.stop.line+"."+string s.stop.pos);
tkcmd(m.tk+" see insert");
packm(m);
}
packm(m: ref Mod)
{
if(packed != m && packed != nil){
tkcmd(packed.tk+" configure -xscrollcommand {}");
tkcmd(packed.tk+" configure -yscrollcommand {}");
tkcmd(".body.scx configure -command {}");
tkcmd(".body.scy configure -command {}");
tkcmd("pack forget "+packed.tk);
}
if(packed != m && m != nil){
tkcmd(m.tk+" configure -xscrollcommand {.body.scx set}");
tkcmd(m.tk+" configure -yscrollcommand {.body.scy set}");
tkcmd(".body.scx configure -command {"+m.tk+" xview}");
tkcmd(".body.scy configure -command {"+m.tk+" yview}");
tkcmd("pack "+m.tk+" -expand 1 -fill both -in .body.ft");
}
packed = m;
}
#
# find the dis file associated with m
# we know that m has a valid src
#
attachdis(m: ref Mod): int
{
c := load Diss m.dis;
if(c == nil){
m.dis = repsuff(m.src, ".b", ".dis");
c = load Diss m.dis;
}
if(c == nil && m.sym != nil){
m.dis = repsuff(m.sym.path, ".sbl", ".dis");
c = load Diss m.dis;
}
if(c != nil){
# if m.dis in /appl, prefer one in /dis if it exists (!)
nd := len m.dis;
for(i := 0; i < len sblpath; i++){
(disd, srcd) := sblpath[i];
ns := len srcd;
if(nd > ns && m.dis[:ns] == srcd){
dis := disd + m.dis[ns:];
d := load Diss dis;
if(d != nil)
m.dis = dis;
break;
}
}
}
if(c == nil){
(dir, file) := str->splitr(repsuff(m.src, ".b", ".dis"), "/");
pat := list of {
file+" (Dis VM module)",
"*.dis (Dis VM module)"
};
m.dis = selectfile->filename(context, tktop.image, "Locate Dis file", pat, dir);
c = load Diss m.dis;
}
return c != nil;
}
#
# load the symbol file for m
# works best if m has an associated source file
#
attachsym(m: ref Mod)
{
if(m.sym != nil)
return;
sbl := repsuff(m.src, ".b", ".sbl");
err : string;
tk->cmd(tktop, "cursor -bitmap cursor.wait");
(m.sym, err) = debug->sym(sbl);
tk->cmd(tktop, "cursor -default");
if(m.sym != nil)
return;
if(!str->prefix("Can't open", err)){
alert(err);
return;
}
(dir, file) := str->splitr(sbl, "/");
pat := list of {
file+" (Symbol table file)",
"*.sbl (Symbol table file)"
};
sbl = selectfile->filename(context, tktop.image, "Locate Symbol file", pat, dir);
tk->cmd(tktop, "cursor -bitmap cursor.wait");
(m.sym, err) = debug->sym(sbl);
tk->cmd(tktop, "cursor -default");
if(m.sym != nil)
return;
if(!str->prefix("Can't open", err)){
alert(err);
return;
}
}
#
# get the current selection
#
getsel(): (ref Mod, int)
{
m := packed;
if(m == nil || m.src == nil)
return (nil, 0);
attachsym(m);
if(m.sym == nil){
alert("No symbol file for "+m.src);
return (nil, 0);
}
index := tkcmd(m.tk+" index insert");
if(len index == 0 || index[0] == '!')
return (nil, 0);
(sline, spos) := str->splitl(index, ".");
line := int sline;
pos := int spos[1:];
pc := m.sym.srctopc(ref Src((m.src, line, pos), (m.src, line, pos)));
s := m.sym.pctosrc(pc);
if(s == nil){
alert("No pc is appropriate");
return (nil, 0);
}
return (m, pc);
}
#
# return the selected string
#
snarf(): string
{
if(packed == nil)
return "";
s := tk->cmd(tktop, packed.tk+" get sel.first sel.last");
if(len s > 0 && s[0] == '!')
s = "";
return s;
}
plumbit(x, y: string)
{
if (packed == nil)
return;
s := tk->cmd(tktop, packed.tk+" index @"+x+","+y);
if (s == nil || s[0] == '!')
return;
(nil, l) := sys->tokenize(s, ".");
msg := ref Msg(
"WmDeb",
"",
workdir->init(),
"text",
nil,
array of byte (packed.src+":"+hd l));
if(msg.send() < 0)
sys->fprint(sys->fildes(2), "deb: plumbing write error: %r\n");
}
but3proc()
{
button3 := 0;
for (;;) {
s := <-but3;
if(s == "pressed"){
button3 = 1;
continue;
}
if(plumbed == 0 || button3 == 0)
continue;
button3 = 0;
(nil, l) := sys->tokenize(s, " ");
plumbit(hd tl l, hd tl tl l);
}
}
#
# search for another occurance of s;
# return if s was found
#
search(s: string): int
{
if(packed == nil || s == "")
return 0;
pos := " sel.last";
sel := tk->cmd(tktop, packed.tk+" get sel.last");
if(len sel > 0 && sel[0] == '!')
pos = " insert";
pos = tk->cmd(tktop, packed.tk+" search -- "+tk->quote(s)+pos);
if((len pos > 0 && pos[0] == '1') || pos == "")
return 0;
tkcmd(packed.tk+" mark set insert "+pos);
tkcmd(packed.tk+" tag remove sel 0.0 end");
tkcmd(packed.tk+" tag add sel insert "+pos+"+"+string len s+"c");
tkcmd(packed.tk+" see insert");
return 1;
}
#
# make a Mod for debugger module mod
#
findmod(mod: ref Module): ref Mod
{
dis := mod.dis();
if(dis == "")
return nil;
m: ref Mod;
for(ml := mods; ml != nil; ml = tl ml){
m = hd ml;
if(m.dis == dis || filesuffix(dis, m.dis))
break;
}
if(ml == nil){
if(len dis > 0 && dis[0] != '$')
m = findsrc(repsuff(dis, ".dis", ".b"));
if(m == nil)
mods = ref Mod("", "", dis, nil, 0, 0) :: mods;
}
if(m != nil){
m.srcask = 0;
m.dis = dis;
if(m.symask){
attachsym(m);
m.symask = 0;
}
mod.addsym(m.sym);
}
return m;
}
# log(s: string)
# {
# fd := sys->open("/usr/jrf/debug", Sys->OWRITE);
# sys->seek(fd, 0, Sys->SEEKEND);
# sys->fprint(fd, "%s\n", s);
# fd = nil;
# }
findbm(dis: string): ref Mod
{
if(dism == nil){
dism = load Dis Dis->PATH;
if(dism != nil)
dism->init();
}
if(dism != nil && (b := dism->src(dis)) != nil)
return loadsrc(b, 1);
return nil;
}
findsrc(src: string): ref Mod
{
m := loadsrc(src, 1);
if(m != nil)
return m;
m = findbm(repsuff(src, ".b", ".dis"));
if(m != nil)
return m;
(dir, file) := str->splitr(src, "/");
for(i := 0; i < len searchpath; i++){
if(dir != "" && dir[0] != '/')
m = loadsrc(searchpath[i] + src, 0);
if(m != nil)
return m;
m = loadsrc(searchpath[i] + file, 0);
if(m != nil)
return m;
}
ns := len src;
for(i = 0; i < len sblpath; i++){
(disd, srcd) := sblpath[i];
nd := len disd;
if(ns > nd && src[:nd] == disd){
m = loadsrc(srcd + src[nd:], 0);
if(m != nil)
return m;
}
}
(dir, file) = str->splitr(src, "/");
opdir := dir;
if(opdir == "" || opdir[0] != '/')
opdir = opendir;
pat := list of {
file+" (Limbo source)",
"*.b (Limbo source)"
};
src = selectfile->filename(context, tktop.image, "Locate Limbo Source", pat, opdir);
if(src == nil)
return nil;
(opendir, nil) = str->splitr(src, "/");
if(opendir == "")
opendir = ".";
m = loadsrc(src, 1);
if(m != nil
&& dir != "" && dir[0] != '/'
&& suffix(dir, opendir))
addsearch(opendir[:len opendir - len dir]);
else if(m != nil) # remember anyway
addsearch(opendir);
return m;
}
suffix(suff, s: string): int
{
if(len suff > len s)
return 0;
return suff == s[len s - len suff:];
}
#
# load the contents of fd into tkt
#
loadfile(tkt: string, fd: ref Sys->FD): int
{
buf := array[512] of byte;
i := 0;
(ok, d) := sys->fstat(fd);
if(ok < 0)
return 0;
tk->cmd(tktop, "cursor -bitmap cursor.wait");
length := int d.length;
whole := array[length] of byte;
cr := 0;
for(;;){
if(cr){
buf[0] = byte '\r';
n := sys->read(fd, buf[1:], len buf - 1);
n++;
}
else
n := sys->read(fd, buf, len buf);
if(n <= 0)
break;
if(remcr){
for(k := 0; k < n-1; ){
if(buf[k] == byte '\r' && buf[k+1] == byte '\n')
buf[k:] = buf[k+1:n--];
else
k++;
}
if(buf[n-1] == byte '\r'){
n--;
cr = 1;
}
}
j := i+n;
if(j > length)
break;
whole[i:] = buf[:n];
i += n;
}
tk->cmd(tktop, tkt+" delete 1.0 end;"+tkt+" insert end '"+string whole[:i]);
tk->cmd(tktop, "update; cursor -default");
return 1;
}
delmod(mods: list of ref Mod, m: ref Mod): list of ref Mod
{
if(mods == nil)
return nil;
mh := hd mods;
if(mh == m)
return tl mods;
return mh :: delmod(tl mods, m);
}
#
# replace an occurance in name of suffix old with new
#
repsuff(name, old, new: string): string
{
no := len old;
nn := len name;
if(nn >= no && name[nn-no:] == old)
return name[:nn-no] + new;
return name;
}
filesuffix(suf, s: string): int
{
nsuf := len suf;
ns := len s;
return ns > nsuf
&& suf[0] != '/'
&& s[ns-nsuf-1] == '/'
&& s[ns-nsuf:] == suf;
}
alert(m: string)
{
dialog->prompt(context, tktop.image, "warning -fg yellow",
"Debugger Alert", m, 0, "Dismiss"::nil);
}
tkcmd(s: string): string
{
return tk->cmd(tktop, s);
}