ref: 82b046f36f8084a22bbb5d71edd0edd9179561eb
dir: /appl/acme/exec.b/
implement Exec;
include "common.m";
sys : Sys;
env : Env;
dat : Dat;
acme : Acme;
utils : Utils;
graph : Graph;
gui : Gui;
lookx : Look;
bufferm : Bufferm;
textm : Textm;
scrl : Scroll;
filem : Filem;
windowm : Windowm;
rowm : Rowm;
columnm : Columnm;
fsys : Fsys;
editm: Edit;
Dir, OREAD, OWRITE : import Sys;
EVENTSIZE, QWaddr, QWdata, QWevent, Astring : import dat;
Lock, Reffont, Ref, seltext, seq, row : import dat;
warning, error, skipbl, findbl, stralloc, strfree, exec : import utils;
dirname : import lookx;
Body, Text : import textm;
File : import filem;
sprint : import sys;
TRUE, FALSE, XXX, BUFSIZE : import Dat;
Buffer : import bufferm;
Row : import rowm;
Column : import columnm;
Window : import windowm;
setalphabet: import textm;
# snarfbuf : ref Buffer;
init(mods : ref Dat->Mods)
{
sys = mods.sys;
env = mods.env;
dat = mods.dat;
acme = mods.acme;
utils = mods.utils;
graph = mods.graph;
gui = mods.gui;
lookx = mods.look;
bufferm = mods.bufferm;
textm = mods.textm;
scrl = mods.scroll;
filem = mods.filem;
rowm = mods.rowm;
windowm = mods.windowm;
columnm = mods.columnm;
fsys = mods.fsys;
editm = mods.edit;
snarfbuf = bufferm->newbuffer();
}
Exectab : adt {
name : string;
fun : int;
mark : int;
flag1 : int;
flag2 : int;
};
F_ALPHABET, F_CUT, F_DEL, F_DELCOL, F_DUMP, F_EDIT, F_EXITX, F_FONTX, F_GET, F_ID, F_INCL, F_KILL, F_LIMBO, F_LINENO, F_LOCAL, F_LOOK, F_NEW, F_NEWCOL, F_PASTE, F_PUT, F_PUTALL, F_UNDO, F_SEND, F_SORT, F_TAB, F_ZEROX : con iota;
exectab := array[] of {
Exectab ( "Alphabet", F_ALPHABET, FALSE, XXX, XXX ),
Exectab ( "Cut", F_CUT, TRUE, TRUE, TRUE ),
Exectab ( "Del", F_DEL, FALSE, FALSE, XXX ),
Exectab ( "Delcol", F_DELCOL, FALSE, XXX, XXX ),
Exectab ( "Delete", F_DEL, FALSE, TRUE, XXX ),
Exectab ( "Dump", F_DUMP, FALSE, TRUE, XXX ),
Exectab ( "Edit", F_EDIT, FALSE, XXX, XXX ),
Exectab ( "Exit", F_EXITX, FALSE, XXX, XXX ),
Exectab ( "Font", F_FONTX, FALSE, XXX, XXX ),
Exectab ( "Get", F_GET, FALSE, TRUE, XXX ),
Exectab ( "ID", F_ID, FALSE, XXX, XXX ),
Exectab ( "Incl", F_INCL, FALSE, XXX, XXX ),
Exectab ( "Kill", F_KILL, FALSE, XXX, XXX ),
Exectab ( "Limbo", F_LIMBO, FALSE, XXX, XXX ),
Exectab ( "Lineno", F_LINENO, FALSE, XXX, XXX ),
Exectab ( "Load", F_DUMP, FALSE, FALSE, XXX ),
Exectab ( "Local", F_LOCAL, FALSE, XXX, XXX ),
Exectab ( "Look", F_LOOK, FALSE, XXX, XXX ),
Exectab ( "New", F_NEW, FALSE, XXX, XXX ),
Exectab ( "Newcol", F_NEWCOL, FALSE, XXX, XXX ),
Exectab ( "Paste", F_PASTE, TRUE, TRUE, XXX ),
Exectab ( "Put", F_PUT, FALSE, XXX, XXX ),
Exectab ( "Putall", F_PUTALL, FALSE, XXX, XXX ),
Exectab ( "Redo", F_UNDO, FALSE, FALSE, XXX ),
Exectab ( "Send", F_SEND, TRUE, XXX, XXX ),
Exectab ( "Snarf", F_CUT, FALSE, TRUE, FALSE ),
Exectab ( "Sort", F_SORT, FALSE, XXX, XXX ),
Exectab ( "Tab", F_TAB, FALSE, XXX, XXX ),
Exectab ( "Undo", F_UNDO, FALSE, TRUE, XXX ),
Exectab ( "Zerox", F_ZEROX, FALSE, XXX, XXX ),
Exectab ( nil, 0, 0, 0, 0 ),
};
runfun(fun : int, et, t, argt : ref Text, flag1, flag2 : int, arg : string, narg : int)
{
case (fun) {
F_ALPHABET => alphabet(et, argt, arg, narg);
F_CUT => cut(et, t, flag1, flag2);
F_DEL => del(et, flag1);
F_DELCOL => delcol(et);
F_DUMP => dump(argt, flag1, arg, narg);
F_EDIT => edit(et, argt, arg, narg);
F_EXITX => exitx();
F_FONTX => fontx(et, t, argt, arg, narg);
F_GET => get(et, t, argt, flag1, arg, narg);
F_ID => id(et);
F_INCL => incl(et, argt, arg, narg);
F_KILL => kill(argt, arg, narg);
F_LIMBO => limbo(et);
F_LINENO => lineno(et);
F_LOCAL => local(et, argt, arg);
F_LOOK => look(et, t, argt);
F_NEW => lookx->new(et, t, argt, flag1, flag2, arg, narg);
F_NEWCOL => newcol(et);
F_PASTE => paste(et, t, flag1, flag2);
F_PUT => put(et, argt, arg, narg);
F_PUTALL => putall();
F_UNDO => undo(et, flag1);
F_SEND => send(et, t);
F_SORT => sort(et);
F_TAB => tab(et, argt, arg, narg);
F_ZEROX => zerox(et, t);
* => error("bad case in runfun()");
}
}
lookup(r : string, n : int) : int
{
nr : int;
(r, n) = skipbl(r, n);
if(n == 0)
return -1;
(nil, nr) = findbl(r, n);
nr = n-nr;
for(i := 0; exectab[i].name != nil; i++)
if (r[0:nr] == exectab[i].name)
return i;
return -1;
}
isexecc(c : int) : int
{
if(lookx->isfilec(c))
return 1;
return c=='<' || c=='|' || c=='>';
}
execute(t : ref Text, aq0 : int, aq1 : int, external : int, argt : ref Text)
{
q0, q1 : int;
r : ref Astring;
s, dir, aa, a : string;
e : int;
c, n, f : int;
q0 = aq0;
q1 = aq1;
if(q1 == q0){ # expand to find word (actually file name)
# if in selection, choose selection
if(t.q1>t.q0 && t.q0<=q0 && q0<=t.q1){
q0 = t.q0;
q1 = t.q1;
}else{
while(q1<t.file.buf.nc && isexecc(c=t.readc(q1)) && c!=':')
q1++;
while(q0>0 && isexecc(c=t.readc(q0-1)) && c!=':')
q0--;
if(q1 == q0)
return;
}
}
r = stralloc(q1-q0);
t.file.buf.read(q0, r, 0, q1-q0);
e = lookup(r.s, q1-q0);
if(!external && t.w!=nil && t.w.nopen[QWevent]>byte 0){
f = 0;
if(e >= 0)
f |= 1;
if(q0!=aq0 || q1!=aq1){
t.file.buf.read(aq0, r, 0, aq1-aq0);
f |= 2;
}
(aa, a) = getbytearg(argt, TRUE, TRUE);
if(a != nil){
if(len a > EVENTSIZE){ # too big; too bad
aa = a = nil;
warning(nil, "`argument string too long\n");
return;
}
f |= 8;
}
c = 'x';
if(t.what == Body)
c = 'X';
n = aq1-aq0;
if(n <= EVENTSIZE)
t.w.event(sprint("%c%d %d %d %d %s\n", c, aq0, aq1, f, n, r.s[0:n]));
else
t.w.event(sprint("%c%d %d %d 0 \n", c, aq0, aq1, f));
if(q0!=aq0 || q1!=aq1){
n = q1-q0;
t.file.buf.read(q0, r, 0, n);
if(n <= EVENTSIZE)
t.w.event(sprint("%c%d %d 0 %d %s\n", c, q0, q1, n, r.s[0:n]));
else
t.w.event(sprint("%c%d %d 0 0 \n", c, q0, q1));
}
if(a != nil){
t.w.event(sprint("%c0 0 0 %d %s\n", c, len a, a));
if(aa != nil)
t.w.event(sprint("%c0 0 0 %d %s\n", c, len aa, aa));
else
t.w.event(sprint("%c0 0 0 0 \n", c));
}
strfree(r);
r = nil;
a = aa = nil;
return;
}
if(e >= 0){
if(exectab[e].mark && seltext!=nil)
if(seltext.what == Body){
seq++;
seltext.w.body.file.mark();
}
(s, n) = skipbl(r.s, q1-q0);
(s, n) = findbl(s, n);
(s, n) = skipbl(s, n);
runfun(exectab[e].fun, t, seltext, argt, exectab[e].flag1, exectab[e].flag2, s, n);
strfree(r);
r = nil;
return;
}
(dir, n) = dirname(t, nil, 0);
if(n==1 && dir[0]=='.'){ # sigh
dir = nil;
n = 0;
}
(aa, a) = getbytearg(argt, TRUE, TRUE);
if(t.w != nil)
t.w.refx.inc();
spawn run(t.w, r.s, dir, n, TRUE, aa, a, FALSE);
}
printarg(argt : ref Text, q0 : int, q1 : int) : string
{
buf : string;
if(argt.what!=Body || argt.file.name==nil)
return nil;
if(q0 == q1)
buf = sprint("%s:#%d", argt.file.name, q0);
else
buf = sprint("%s:#%d,#%d", argt.file.name, q0, q1);
return buf;
}
getarg(argt : ref Text, doaddr : int, dofile : int) : (string, string, int)
{
r : ref Astring;
n : int;
e : Dat->Expand;
a : string;
ok : int;
if(argt == nil)
return (nil, nil, 0);
a = nil;
argt.commit(TRUE);
(ok, e) = lookx->expand(argt, argt.q0, argt.q1);
if (ok) {
e.bname = nil;
if(len e.name && dofile){
if(doaddr)
a = printarg(argt, e.q0, e.q1);
return (a, e.name, len e.name);
}
e.name = nil;
}else{
e.q0 = argt.q0;
e.q1 = argt.q1;
}
n = e.q1 - e.q0;
r = stralloc(n);
argt.file.buf.read(e.q0, r, 0, n);
if(doaddr)
a = printarg(argt, e.q0, e.q1);
return(a, r.s, n);
}
getbytearg(argt : ref Text, doaddr : int, dofile : int) : (string, string)
{
r : string;
n : int;
aa : string;
(aa, r, n) = getarg(argt, doaddr, dofile);
if(r == nil)
return (nil, nil);
return (aa, r);
}
newcol(et : ref Text)
{
c : ref Column;
c = et.row.add(nil, -1);
if(c != nil)
c.add(nil, nil, -1).settag();
}
delcol(et : ref Text)
{
c := et.col;
if(c==nil || !c.clean(FALSE))
return;
for(i:=0; i<c.nw; i++){
w := c.w[i];
if(int w.nopen[QWevent]+int w.nopen[QWaddr]+int w.nopen[QWdata] > 0){
warning(nil, sys->sprint("can't delete column; %s is running an external command\n", w.body.file.name));
return;
}
}
c.row.close(c, TRUE);
}
del(et : ref Text, flag1 : int)
{
if(et.col==nil || et.w == nil)
return;
if(flag1 || et.w.body.file.ntext>1 || et.w.clean(FALSE, FALSE))
et.col.close(et.w, TRUE);
}
sort(et : ref Text)
{
if(et.col != nil)
et.col.sort();
}
seqof(w: ref Window, isundo: int): int
{
# if it's undo, see who changed with us
if(isundo)
return w.body.file.seq;
# if it's redo, see who we'll be sync'ed up with
return w.body.file.redoseq();
}
undo(et : ref Text, flag1 : int)
{
i, j: int;
c: ref Column;
w: ref Window;
seq: int;
if(et==nil || et.w== nil)
return;
seq = seqof(et.w, flag1);
for(i=0; i<row.ncol; i++){
c = row.col[i];
for(j=0; j<c.nw; j++){
w = c.w[j];
if(seqof(w, flag1) == seq)
w.undo(flag1);
}
}
# et.w.undo(flag1);
}
getname(t : ref Text, argt : ref Text, arg : string, narg : int, isput : int) : string
{
r, dir : string;
i, n, ndir, promote : int;
(nil, r, n) = getarg(argt, FALSE, TRUE);
promote = FALSE;
if(r == nil)
promote = TRUE;
else if(isput){
# if are doing a Put, want to synthesize name even for non-existent file
# best guess is that file name doesn't contain a slash
promote = TRUE;
for(i=0; i<n; i++)
if(r[i] == '/'){
promote = FALSE;
break;
}
if(promote){
t = argt;
arg = r;
narg = n;
}
}
if(promote){
n = narg;
if(n <= 0)
return t.file.name;
# prefix with directory name if necessary
dir = nil;
ndir = 0;
if(n>0 && arg[0]!='/'){
(dir, ndir) = dirname(t, nil, 0);
if(n==1 && dir[0]=='.'){ # sigh
dir = nil;
ndir = 0;
}
}
if(dir != nil){
r = dir[0:ndir] + arg[0:n];
dir = nil;
n += ndir;
}else
r = arg[0:n];
}
return r;
}
zerox(et : ref Text, t : ref Text)
{
nw : ref Window;
c, locked : int;
locked = FALSE;
if(t!=nil && t.w!=nil && t.w!=et.w){
locked = TRUE;
c = 'M';
if(et.w != nil)
c = et.w.owner;
t.w.lock(c);
}
if(t == nil)
t = et;
if(t==nil || t.w==nil)
return;
t = t.w.body;
if(t.w.isdir)
warning(nil, sprint("%s is a directory; Zerox illegal\n", t.file.name));
else{
nw = t.w.col.add(nil, t.w, -1);
# ugly: fix locks so w.unlock works
nw.lock1(t.w.owner);
}
if(locked)
t.w.unlock();
}
get(et : ref Text, t : ref Text, argt : ref Text, flag1 : int, arg : string, narg : int)
{
name : string;
r : string;
i, n, dirty : int;
w : ref Window;
u : ref Text;
d : Dir;
ok : int;
if(flag1)
if(et==nil || et.w==nil)
return;
if(!et.w.isdir && (et.w.body.file.buf.nc>0 && !et.w.clean(TRUE, FALSE)))
return;
w = et.w;
t = w.body;
name = getname(t, argt, arg, narg, FALSE);
if(name == nil){
warning(nil, "no file name\n");
return;
}
if(t.file.ntext>1){
(ok, d) = sys->stat(name);
if (ok == 0 && d.qid.qtype & Sys->QTDIR) {
warning(nil, sprint("%s is a directory; can't read with multiple windows on it\n", name));
return;
}
}
r = name;
n = len name;
for(i=0; i<t.file.ntext; i++){
u = t.file.text[i];
# second and subsequent calls with zero an already empty buffer, but OK
u.reset();
u.w.dirfree();
}
samename := r[0:n] == t.file.name;
t.loadx(0, name, samename);
if(samename){
t.file.mod = FALSE;
dirty = FALSE;
}else{
t.file.mod = TRUE;
dirty = TRUE;
}
for(i=0; i<t.file.ntext; i++)
t.file.text[i].w.dirty = dirty;
name = nil;
r = nil;
w.settag();
t.file.unread = FALSE;
for(i=0; i<t.file.ntext; i++){
u = t.file.text[i];
u.w.tag.setselect(u.w.tag.file.buf.nc, u.w.tag.file.buf.nc);
scrl->scrdraw(u);
}
}
putfile(f: ref File, q0: int, q1: int, name: string)
{
n : int;
r, s : ref Astring;
w : ref Window;
i, q : int;
fd : ref Sys->FD;
d : Dir;
ok : int;
w = f.curtext.w;
{
if(name == f.name){
(ok, d) = sys->stat(name);
if(ok >= 0 && (f.dev!=d.dev || f.qidpath!=d.qid.path || f.mtime<d.mtime)){
f.dev = d.dev;
f.qidpath = d.qid.path;
f.mtime = d.mtime;
if(f.unread)
warning(nil, sys->sprint("%s not written; file already exists\n", name));
else
warning(nil, sys->sprint("%s modified since last read\n", name));
raise "e";
}
}
fd = sys->create(name, OWRITE, 8r664); # was 666
if(fd == nil){
warning(nil, sprint("can't create file %s: %r\n", name));
raise "e";
}
r = stralloc(BUFSIZE);
s = stralloc(BUFSIZE);
{
(ok, d) = sys->fstat(fd);
if(ok>=0 && (d.mode&Sys->DMAPPEND) && d.length>big 0){
warning(nil, sprint("%s not written; file is append only\n", name));
raise "e";
}
for(q = q0; q < q1; q += n){
n = q1 - q;
if(n > BUFSIZE)
n = BUFSIZE;
f.buf.read(q, r, 0, n);
ab := array of byte r.s[0:n];
if(sys->write(fd, ab, len ab) != len ab){
ab = nil;
warning(nil, sprint("can't write file %s: %r\n", name));
raise "e";
}
ab = nil;
}
if(name == f.name){
d0 : Dir;
if(q0 != 0 || q1 != f.buf.nc){
f.mod = TRUE;
w.dirty = TRUE;
f.unread = TRUE;
}
else{
(ok, d0) = sys->fstat(fd); # use old values if we failed
if (ok >= 0)
d = d0;
f.qidpath = d.qid.path;
f.dev = d.dev;
f.mtime = d.mtime;
f.mod = FALSE;
w.dirty = FALSE;
f.unread = FALSE;
}
for(i=0; i<f.ntext; i++){
f.text[i].w.putseq = f.seq;
f.text[i].w.dirty = w.dirty;
}
}
strfree(s);
strfree(r);
s = r = nil;
name = nil;
fd = nil;
w.settag();
}
exception{
* =>
strfree(s);
strfree(r);
s = r = nil;
fd = nil;
raise "e";
}
}
exception{
* =>
name = nil;
return;
}
}
put(et : ref Text, argt : ref Text, arg : string, narg : int)
{
namer : string;
name : string;
w : ref Window;
if(et==nil || et.w==nil || et.w.isdir)
return;
w = et.w;
f := w.body.file;
name = getname(w.body, argt, arg, narg, TRUE);
if(name == nil){
warning(nil, "no file name\n");
return;
}
namer = name;
putfile(f, 0, f.buf.nc, namer);
name = nil;
}
dump(argt : ref Text, isdump : int, arg : string, narg : int)
{
name : string;
if(narg)
name = arg;
else
(nil, name) = getbytearg(argt, FALSE, TRUE);
if(isdump)
row.dump(name);
else {
if (!row.qlock.locked())
error("row not locked in dump()");
row.loadx(name, FALSE);
}
name = nil;
}
cut(et : ref Text, t : ref Text, dosnarf : int, docut : int)
{
q0, q1, n, locked, c : int;
r : ref Astring;
# use current window if snarfing and its selection is non-null
if(et!=t && dosnarf && et.w!=nil){
if(et.w.body.q1>et.w.body.q0){
t = et.w.body;
t.file.mark(); # seq has been incremented by execute
}
else if(et.w.tag.q1>et.w.tag.q0)
t = et.w.tag;
}
if(t == nil)
return;
locked = FALSE;
if(t.w!=nil && et.w!=t.w){
locked = TRUE;
c = 'M';
if(et.w != nil)
c = et.w.owner;
t.w.lock(c);
}
if(t.q0 == t.q1){
if(locked)
t.w.unlock();
return;
}
if(dosnarf){
q0 = t.q0;
q1 = t.q1;
snarfbuf.delete(0, snarfbuf.nc);
r = stralloc(BUFSIZE);
while(q0 < q1){
n = q1 - q0;
if(n > BUFSIZE)
n = BUFSIZE;
t.file.buf.read(q0, r, 0, n);
snarfbuf.insert(snarfbuf.nc, r.s, n);
q0 += n;
}
strfree(r);
r = nil;
acme->putsnarf();
}
if(docut){
t.delete(t.q0, t.q1, TRUE);
t.setselect(t.q0, t.q0);
if(t.w != nil){
scrl->scrdraw(t);
t.w.settag();
}
}else if(dosnarf) # Snarf command
dat->argtext = t;
if(locked)
t.w.unlock();
}
paste(et : ref Text, t : ref Text, selectall : int, tobody: int)
{
c : int;
q, q0, q1, n : int;
r : ref Astring;
# if(tobody), use body of executing window (Paste or Send command)
if(tobody && et!=nil && et.w!=nil){
t = et.w.body;
t.file.mark(); # seq has been incremented by execute
}
if(t == nil)
return;
acme->getsnarf();
if(t==nil || snarfbuf.nc==0)
return;
if(t.w!=nil && et.w!=t.w){
c = 'M';
if(et.w != nil)
c = et.w.owner;
t.w.lock(c);
}
cut(t, t, FALSE, TRUE);
q = 0;
q0 = t.q0;
q1 = t.q0+snarfbuf.nc;
r = stralloc(BUFSIZE);
while(q0 < q1){
n = q1 - q0;
if(n > BUFSIZE)
n = BUFSIZE;
if(r == nil)
r = stralloc(n);
snarfbuf.read(q, r, 0, n);
t.insert(q0, r.s, n, TRUE, 0);
q += n;
q0 += n;
}
strfree(r);
r = nil;
if(selectall)
t.setselect(t.q0, q1);
else
t.setselect(q1, q1);
if(t.w != nil){
scrl->scrdraw(t);
t.w.settag();
}
if(t.w!=nil && et.w!=t.w)
t.w.unlock();
}
look(et : ref Text, t : ref Text, argt : ref Text)
{
r : string;
s : ref Astring;
n : int;
if(et != nil && et.w != nil){
t = et.w.body;
(nil, r, n) = getarg(argt, FALSE, FALSE);
if(r == nil){
n = t.q1-t.q0;
s = stralloc(n);
t.file.buf.read(t.q0, s, 0, n);
r = s.s;
}
lookx->search(t, r, n);
r = nil;
}
}
send(et : ref Text, t : ref Text)
{
if(et.w==nil)
return;
t = et.w.body;
if(t.q0 != t.q1)
cut(t, t, TRUE, FALSE);
t.setselect(t.file.buf.nc, t.file.buf.nc);
paste(t, t, TRUE, TRUE);
if(t.readc(t.file.buf.nc-1) != '\n'){
t.insert(t.file.buf.nc, "\n", 1, TRUE, 0);
t.setselect(t.file.buf.nc, t.file.buf.nc);
}
}
edit(et: ref Text, argt: ref Text, arg: string, narg: int)
{
r: string;
leng: int;
if(et == nil)
return;
(nil, r, leng) = getarg(argt, FALSE, TRUE);
seq++;
if(r != nil){
editm->editcmd(et, r, leng);
r = nil;
}else
editm->editcmd(et, arg, narg);
}
exitx()
{
if(row.clean(TRUE))
acme->acmeexit(nil);
}
putall()
{
i, j, e : int;
w : ref Window;
c : ref Column;
a : string;
for(i=0; i<row.ncol; i++){
c = row.col[i];
for(j=0; j<c.nw; j++){
w = c.w[j];
if(w.isscratch || w.isdir || len w.body.file.name==0)
continue;
if(w.nopen[QWevent] > byte 0)
continue;
a = w.body.file.name;
e = utils->access(a);
if(w.body.file.mod || w.body.ncache)
if(e < 0)
warning(nil, sprint("no auto-Put of %s: %r\n", a));
else{
w.commit(w.body);
put(w.body, nil, nil, 0);
}
a = nil;
}
}
}
id(et : ref Text)
{
if(et != nil && et.w != nil)
warning(nil, sprint("/mnt/acme/%d/\n", et.w.id));
}
limbo(et: ref Text)
{
s := getname(et.w.body, nil, nil, 0, 0);
if(s == nil)
return;
for(l := len s; l > 0 && s[--l] != '/'; )
;
if(s[l] == '/')
s = s[l+1: ];
s = "limbo -gw " + s;
(dir, n) := dirname(et, nil, 0);
if(n==1 && dir[0]=='.'){ # sigh
dir = nil;
n = 0;
}
spawn run(nil, s, dir, n, TRUE, nil, nil, FALSE);
}
local(et : ref Text, argt : ref Text, arg : string)
{
a, aa : string;
dir : string;
n : int;
(aa, a) = getbytearg(argt, TRUE, TRUE);
(dir, n) = dirname(et, nil, 0);
if(n==1 && dir[0]=='.'){ # sigh
dir = nil;
n = 0;
}
spawn run(nil, arg, dir, n, FALSE, aa, a, FALSE);
}
kill(argt : ref Text, arg : string, narg : int)
{
a, cmd, r : string;
na : int;
(nil, r, na) = getarg(argt, FALSE, FALSE);
if(r != nil)
kill(nil, r, na);
# loop condition: *arg is not a blank
for(;;){
(a, na) = findbl(arg, narg);
if(a == arg)
break;
cmd = arg[0:narg-na];
dat->ckill <-= cmd;
(arg, narg) = skipbl(a, na);
}
}
lineno(et : ref Text)
{
n : int;
if (et == nil || et.w == nil || (et = et.w.body) == nil)
return;
q0 := et.q0;
q1 := et.q1;
if (q0 < 0 || q1 < 0 || q0 > q1)
return;
ln0 := 1;
ln1 := 1;
rp := stralloc(BUFSIZE);
nc := et.file.buf.nc;
if (q0 >= nc)
q0 = nc-1;
if (q1 >= nc)
q1 = nc-1;
for (q := 0; q < q1; ) {
if (q+BUFSIZE > nc)
n = nc-q;
else
n = BUFSIZE;
et.file.buf.read(q, rp, 0, n);
for (i := 0; i < n && q < q1; i++) {
if (rp.s[i] == '\n') {
if (q < q0)
ln0++;
if (q < q1-1)
ln1++;
}
q++;
}
}
rp = nil;
if (et.file.name != nil)
file := et.file.name + ":";
else
file = nil;
if (ln0 == ln1)
warning(nil, sprint("%s%d\n", file, ln0));
else
warning(nil, sprint("%s%d,%d\n", file, ln0, ln1));
}
fontx(et : ref Text, t : ref Text, argt : ref Text, arg : string, narg : int)
{
a, r, flag, file : string;
na, nf : int;
aa : string;
newfont : ref Reffont;
dp : ref Dat->Dirlist;
i, fix : int;
if(et==nil || et.w==nil)
return;
t = et.w.body;
flag = nil;
file = nil;
# loop condition: *arg is not a blank
nf = 0;
for(;;){
(a, na) = findbl(arg, narg);
if(a == arg)
break;
r = arg[0:narg-na];
if(r == "fix" || r == "var"){
flag = nil;
flag = r;
}else{
file = r;
nf = narg-na;
}
(arg, narg) = skipbl(a, na);
}
(nil, r, na) = getarg(argt, FALSE, TRUE);
if(r != nil)
if(r == "fix" || r == "var"){
flag = nil;
flag = r;
}else{
file = r;
nf = na;
}
fix = 1;
if(flag != nil)
fix = flag == "fix";
else if(file == nil){
newfont = Reffont.get(FALSE, FALSE, FALSE, nil);
if(newfont != nil)
fix = newfont.f.name == t.frame.font.name;
}
if(file != nil){
aa = file[0:nf];
newfont = Reffont.get(fix, flag!=nil, FALSE, aa);
aa = nil;
}else
newfont = Reffont.get(fix, FALSE, FALSE, nil);
if(newfont != nil){
graph->draw(gui->mainwin, t.w.r, acme->textcols[Framem->BACK], nil, (0, 0));
t.reffont.close();
t.reffont = newfont;
t.frame.font = newfont.f;
if(t.w.isdir){
t.all.min.x++; # force recolumnation; disgusting!
for(i=0; i<t.w.ndl; i++){
dp = t.w.dlp[i];
aa = dp.r;
dp.wid = graph->strwidth(newfont.f, aa);
aa = nil;
}
}
# avoid shrinking of window due to quantization
t.w.col.grow(t.w, -1, 1);
}
file = nil;
flag = nil;
}
incl(et : ref Text, argt : ref Text, arg : string, narg : int)
{
a, r : string;
w : ref Window;
na, n, leng : int;
if(et==nil || et.w==nil)
return;
w = et.w;
n = 0;
(nil, r, leng) = getarg(argt, FALSE, TRUE);
if(r != nil){
n++;
w.addincl(r, leng);
}
# loop condition: *arg is not a blank
for(;;){
(a, na) = findbl(arg, narg);
if(a == arg)
break;
r = arg[0:narg-na];
n++;
w.addincl(r, narg-na);
(arg, narg) = skipbl(a, na);
}
if(n==0 && w.nincl){
for(n=w.nincl; --n>=0; )
warning(nil, sprint("%s ", w.incl[n]));
warning(nil, "\n");
}
}
tab(et : ref Text, argt : ref Text, arg : string, narg : int)
{
a, r, p : string;
w : ref Window;
na, leng, tab : int;
if(et==nil || et.w==nil)
return;
w = et.w;
(nil, r, leng) = getarg(argt, FALSE, TRUE);
tab = 0;
if(r!=nil && leng>0){
p = r[0:leng];
if('0'<=p[0] && p[0]<='9')
tab = int p;
p = nil;
}else{
(a, na) = findbl(arg, narg);
if(a != arg){
p = arg[0:narg-na];
if('0'<=p[0] && p[0]<='9')
tab = int p;
p = nil;
}
}
if(tab > 0){
if(w.body.tabstop != tab){
w.body.tabstop = tab;
w.reshape(w.r, 1);
}
}else
warning(nil, sys->sprint("%s: Tab %d\n", w.body.file.name, w.body.tabstop));
}
alphabet(et: ref Text, argt: ref Text, arg: string, narg: int)
{
r: string;
leng: int;
if(et == nil)
return;
(nil, r, leng) = getarg(argt, FALSE, FALSE);
if(r != nil)
setalphabet(r[0:leng]);
else
setalphabet(arg[0:narg]);
}
runfeed(p : array of ref Sys->FD, c : chan of int)
{
n : int;
buf : array of byte;
s : string;
sys->pctl(Sys->FORKFD, nil);
c <-= 1;
# p[1] = nil;
buf = array[256] of byte;
for(;;){
if((n = sys->read(p[0], buf, 256)) <= 0)
break;
s = string buf[0:n];
dat->cerr <-= s;
s = nil;
}
buf = nil;
exit;
}
run(win : ref Window, s : string, rdir : string, ndir : int, newns : int, argaddr : string, arg : string, iseditcmd: int)
{
c : ref Dat->Command;
name, dir : string;
e, t : int;
av : list of string;
r : int;
incl : array of string;
inarg, i, nincl : int;
tfd : ref Sys->FD;
p : array of ref Sys->FD;
pc : chan of int;
winid : int;
c = ref Dat->Command;
t = 0;
while(t < len s && (s[t]==' ' || s[t]=='\n' || s[t]=='\t'))
t++;
for(e=t; e < len s; e++)
if(s[e]==' ' || s[e]=='\n' || s[e]=='\t' )
break;
name = s[t:e];
e = utils->strrchr(name, '/');
if(e >= 0)
name = name[e+1:];
name += " "; # add blank here for ease in waittask
c.name = name;
name = nil;
pipechar := 0;
if (t < len s && (s[t] == '<' || s[t] == '|' || s[t] == '>')){
pipechar = s[t++];
s = s[t:];
}
c.pid = sys->pctl(0, nil);
c.iseditcmd = iseditcmd;
c.text = s;
dat->ccommand <-= c;
#
# must pctl() after communication because rendezvous name
# space is part of RFNAMEG.
#
if(newns){
wids : string = "";
filename: string;
if(win != nil){
filename = win.body.file.name;
wids = string win.id;
nincl = win.nincl;
incl = array[nincl] of string;
for(i=0; i<nincl; i++)
incl[i] = win.incl[i];
winid = win.id;
win.close();
}else{
winid = 0;
nincl = 0;
incl = nil;
if(dat->activewin != nil)
winid = (dat->activewin).id;
}
# sys->pctl(Sys->FORKNS|Sys->FORKFD|Sys->NEWPGRP, nil);
sys->pctl(Sys->FORKNS|Sys->NEWFD|Sys->FORKENV|Sys->NEWPGRP, 0::1::2::fsys->fsyscfd()::nil);
if(rdir != nil){
dir = rdir[0:ndir];
sys->chdir(dir); # ignore error: probably app. window
dir = nil;
}
if(filename != nil)
env->setenv("%", filename);
c.md = fsys->fsysmount(rdir, ndir, incl, nincl);
if(c.md == nil){
# error("child: can't mount /mnt/acme");
warning(nil, "can't mount /mnt/acme");
exit;
}
if(winid > 0 && (pipechar=='|' || pipechar=='>')){
buf := sys->sprint("/mnt/acme/%d/rdsel", winid);
tfd = sys->open(buf, OREAD);
}
else
tfd = sys->open("/dev/null", OREAD);
sys->dup(tfd.fd, 0);
tfd = nil;
if((winid > 0 || iseditcmd) && (pipechar=='|' || pipechar=='<')){
buf: string;
if(iseditcmd){
if(winid > 0)
buf = sprint("/mnt/acme/%d/editout", winid);
else
buf = sprint("/mnt/acme/editout");
}
else
buf = sys->sprint("/mnt/acme/%d/wrsel", winid);
tfd = sys->open(buf, OWRITE);
}
else
tfd = sys->open("/dev/cons", OWRITE);
sys->dup(tfd.fd, 1);
tfd = nil;
if(winid > 0 && (pipechar=='|' || pipechar=='<')){
tfd = sys->open("/dev/cons", OWRITE);
sys->dup(tfd.fd, 2);
}
else
sys->dup(1, 2);
tfd = nil;
env->setenv("acmewin", wids);
}else{
if(win != nil)
win.close();
sys->pctl(Sys->FORKFD|Sys->NEWPGRP, nil);
if(rdir != nil){
dir = rdir[0:ndir];
sys->chdir(dir); # ignore error: probably app. window
dir = nil;
}
p = array[2] of ref Sys->FD;
if(sys->pipe(p) < 0){
error("child: can't pipe");
exit;
}
pc = chan of int;
spawn runfeed(p, pc);
<-pc;
pc = nil;
fsys->fsysclose();
tfd = sys->open("/dev/null", OREAD);
sys->dup(tfd.fd, 0);
tfd = nil;
sys->dup(p[1].fd, 1);
sys->dup(1, 2);
p[0] = p[1] = nil;
}
if(argaddr != nil)
env->setenv("acmeaddr", argaddr);
hard := 1;
if(len s > 512-10) # may need to print into stack
hard = 1;
else {
inarg = FALSE;
for(e=0; e < len s; e++){
r = s[e];
if(r==' ' || r=='\t')
continue;
if(r < ' ') {
hard = 1;
break;
}
if(utils->strchr("#;&|^$=`'{}()<>[]*?^~`", r) >= 0) {
hard = 1;
break;
}
inarg = TRUE;
}
if (!hard) {
if(!inarg)
exit;
av = nil;
sa := -1;
for(e=0; e < len s; e++){
r = s[e];
if(r==' ' || r=='\t'){
if (sa >= 0) {
av = s[sa:e] :: av;
sa = -1;
}
continue;
}
if (sa < 0)
sa = e;
}
if (sa >= 0)
av = s[sa:e] :: av;
if (arg != nil)
av = arg :: av;
av = utils->reverse(av);
c.av = av;
exec(hd av, av);
dat->cwait <-= string c.pid + " \"Exec\":";
exit;
}
}
if(arg != nil){
s = sprint("%s '%s'", s, arg); # BUG: what if quote in arg?
c.text = s;
}
av = nil;
av = s :: av;
av = "-c" :: av;
av = "/dis/sh" :: av;
exec(hd av, av);
dat->cwait <-= string c.pid + " \"Exec\":";
exit;
}
# Nasty bug causes
# Edit ,|nonexistentcommand
# (or ,> or ,<) to lock up acme. Easy fix. Add these two lines
# to the failure case of runwaittask():
#
# /sys/src/cmd/acme/exec.c:1287 a exec.c:1288,1289
# else{
# if(c->iseditcmd)
# sendul(cedit, 0);
# free(c->name);
# free(c->text);
# free(c);
# }