ref: 61870c24fae357b78029ce54be0c004e1ffdb3c7
dir: /appl/grid/lib/srvbrowse.b/
implement Srvbrowse;
#
# Copyright © 2003 Vita Nuova Holdings Limited. All rights reserved.
#
include "sys.m";
sys : Sys;
include "draw.m";
draw: Draw;
Rect: import draw;
include "tk.m";
tk: Tk;
include "tkclient.m";
tkclient: Tkclient;
include "grid/srvbrowse.m";
include "registries.m";
registries: Registries;
Registry, Attributes, Service: import registries;
init()
{
sys = load Sys Sys->PATH;
if (sys == nil)
badmod(Sys->PATH);
draw = load Draw Draw->PATH;
if (draw == nil)
badmod(Draw->PATH);
tk = load Tk Tk->PATH;
if (tk == nil)
badmod(Tk->PATH);
tkclient = load Tkclient Tkclient->PATH;
if (tkclient == nil)
badmod(Tkclient->PATH);
tkclient->init();
registries = load Registries Registries->PATH;
if (registries == nil)
badmod(Registries->PATH);
registries->init();
reg = Registry.new("/mnt/registry");
if (reg == nil) {
reg = Registry.connect(nil, nil, nil);
if (reg == nil)
error("Could not find registry");
}
qids = array[511] of { * => "" };
}
reg : ref Registry;
qids : array of string;
# Qid stuff is a bit rubbish at the mo but waiting for registries to change:
# currently address is unique but will not be in the future so waiting
# for another id to uniquely identify a resource
addqid(srvc: ref Service): int
{
addr := srvc.addr;
qid := addr2qid(addr);
for (;;) {
if (qids[qid] == nil)
break;
else if (qids[qid] == addr)
return qid;
qid++;
if (qid >= len qids)
qid = 0;
}
qids[qid] = addr;
# sys->print("adding %s (%s) to %d\n",srvc.attrs.get("resource"), addr, qid);
return qid;
}
getqid(srvc: ref Service): string
{
addr := srvc.addr;
qid := addr2qid(addr);
startqid := qid;
for (;;) {
if (qids[qid] == addr)
return string qid;
qid++;
if (qid == startqid)
break;
if (qid >= len qids)
qid = 0;
}
return nil;
}
addr2qid(addr: string): int
{
qid := 0;
# assume addr starts 'tcp!...'
for (i := 4; i < len addr; i++) {
qid += addr[i] * 2**(i%10);
qid = qid % len qids;
}
return qid;
}
addservice(srvc: ref Service)
{
services = srvc :: services;
addqid(srvc);
}
find(filter: list of list of (string, string)): list of ref Service
{
lsrv : list of ref Service = nil;
if (filter == nil)
(lsrv, nil) = reg.services();
else {
for (; filter != nil; filter = tl filter) {
attr := hd filter;
(s, nil) := reg.find(attr);
for (; s != nil; s = tl s)
lsrv = hd s :: lsrv;
}
}
return sortservices(lsrv);
}
refreshservices(filter: list of list of (string, string))
{
services = find(filter);
}
servicepath2Service(path, qid: string): list of ref Service
{
srvl : list of ref Service = nil;
(nil, lst) := sys->tokenize(path, "/");
pname: string;
l := len lst;
if (l < 2 || l > 3)
return nil;
presource := hd tl lst;
if (l == 3)
pname = hd tl tl lst;
for (tmpl := services; tmpl != nil; tmpl = tl tmpl) {
srvc := hd tmpl;
(resource, name) := getresname(srvc);
if (l == 2) {
if (resource == presource)
srvl = srvc :: srvl;
}
else if (l == 3) {
if (resource == presource) {
if (name == pname && qid == getqid(srvc)) {
srvl = srvc :: srvl;
break;
}
}
}
}
return srvl;
}
servicepath2Dir(path: string, qid: int): (array of ref sys->Dir, int)
{
# sys->print("srvcPath2Dir: '%s' %d\n",path, qid);
res : list of (string, string) = nil;
(nil, lst) := sys->tokenize(path, "/");
presource, pname: string;
pattrib := 0;
l := len lst;
if (l > 1)
presource = hd tl lst;
if (l > 2)
pname = hd tl tl lst;
if (l == 4 && hd tl tl tl lst == "attributes")
pattrib = 1;
for (tmpl := services; tmpl != nil; tmpl = tl tmpl) {
srvc := hd tmpl;
(resource, name) := getresname(srvc);
if (l == 1) {
if (!isin(res, resource))
res = (resource, nil) :: res;
}
else if (l == 2) {
if (resource == presource)
res = (name, string getqid(srvc)) :: res;
}
else if (l == 3) {
if (resource == presource && name == pname) {
if (qid == int getqid(srvc)) {
if (srvc.addr[0] == '@')
res = (srvc.addr[1:], string getqid(srvc)) :: res;
else {
if (srvc.attrs != nil)
res = ("attributes", string getqid(srvc)) :: res;
res = ("address:\0"+srvc.addr+"}", string getqid(srvc)) :: res;
}
break;
}
}
}
else if (l == 4) {
if (resource == presource && name == pname && pattrib) {
if (qid == int getqid(srvc)) {
for (tmpl2 := srvc.attrs.attrs; tmpl2 != nil; tmpl2 = tl tmpl2) {
(attrib, val) := hd tmpl2;
if (attrib != "name" && attrib != "resource")
res = (attrib+":\0"+val, string getqid(srvc)) :: res;
}
break;
}
}
}
}
resa := array [len res] of ref sys->Dir;
i := len resa - 1;
for (; res != nil; res = tl res) {
dir : sys->Dir;
qid: string;
(dir.name, qid) = hd res;
if (l < 3 || dir.name == "attributes")
dir.mode = 8r777 | sys->DMDIR;
else
dir.mode = 8r777;
if (qid != nil)
dir.qid.path = big qid;
resa[i--] = ref dir;
}
dups := 0;
if (l >= 2)
dups = 1;
return (resa, dups);
}
isin(l: list of (string, string), s: string): int
{
for (; l != nil; l = tl l)
if ((hd l).t0 == s)
return 1;
return 0;
}
getresname(srvc: ref Service): (string, string)
{
resource := srvc.attrs.get("resource");
if (resource == nil)
resource = "Other";
name := srvc.attrs.get("name");
if (name == nil)
name = "?????";
return (resource,name);
}
badmod(path: string)
{
sys->print("Srvbrowse: failed to load: %s\n",path);
exit;
}
sortservices(lsrv: list of ref Service): list of ref Service
{
a := array[len lsrv] of ref Service;
i := 0;
for (; lsrv != nil; lsrv = tl lsrv) {
addqid(hd lsrv);
a[i++] = hd lsrv;
}
heapsort(a);
lsrvsorted: list of ref Service = nil;
for (i = len a - 1; i >= 0; i--)
lsrvsorted = a[i] :: lsrvsorted;
return lsrvsorted;
}
heapsort(a: array of ref Service)
{
for (i := (len a / 2) - 1; i >= 0; i--)
movedownheap(a, i, len a - 1);
for (i = len a - 1; i > 0; i--) {
tmp := a[0];
a[0] = a[i];
a[i] = tmp;
movedownheap(a, 0, i - 1);
}
}
movedownheap(a: array of ref Service, root, end: int)
{
max: int;
while (2*root <= end) {
r2 := root * 2;
if (2*root == end || comp(a[r2], a[r2+1]) == GT)
max = r2;
else
max = r2 + 1;
if (comp(a[root], a[max]) == LT) {
tmp := a[root];
a[root] = a[max];
a[max] = tmp;
root = max;
}
else
break;
}
}
LT: con -1;
EQ: con 0;
GT: con 1;
comp(a1, a2: ref Service): int
{
(resource1, name1) := getresname(a1);
(resource2, name2) := getresname(a2);
if (resource1 < resource2)
return LT;
if (resource1 > resource2)
return GT;
if (name1 < name2)
return LT;
if (name1 > name2)
return GT;
return EQ;
}
error(e: string)
{
sys->fprint(sys->fildes(2), "Srvbrowse: %s\n", e);
raise "fail:error";
}
searchscr := array[] of {
"frame .f",
"scrollbar .f.sy -command {.f.c yview}",
"scrollbar .f.sx -command {.f.c xview} -orient horizontal",
"canvas .f.c -yscrollcommand {.f.sy set} -xscrollcommand {.f.sx set} -bg white -width 414 -borderwidth 2 -relief sunken -height 180 -xscrollincrement 10 -yscrollincrement 19",
"grid .f.sy -row 0 -column 0 -sticky ns -rowspan 2",
"grid .f.sx -row 1 -column 1 -sticky ew",
"grid .f.c -row 0 -column 1",
"pack .f -fill both -expand 1 ; pack propagate . 0; update",
};
SEARCH, RESULTS: con iota;
searchwin(ctxt: ref Draw->Context, chanout: chan of string, filter: list of list of (string, string))
{
(top, titlebar) := tkclient->toplevel(ctxt,"","Search", tkclient->Appl);
butchan := chan of string;
tk->namechan(top, butchan, "butchan");
tkcmds(top, searchscr);
makesearchframe(top);
flid := setframe(top, ".fsearch", nil);
selected := "";
lresults : list of ref Service = nil;
resultstart := 0;
resize(top, 368,220);
maxresults := getmaxresults(top);
currmode := SEARCH;
tkclient->onscreen(top, nil);
tkclient->startinput(top, "kbd"::"ptr"::nil);
main: for (;;) {
alt {
s := <-top.ctxt.kbd =>
tk->keyboard(top, s);
s := <-top.ctxt.ptr =>
tk->pointer(top, *s);
inp := <-butchan =>
(nil, lst) := sys->tokenize(inp, " ");
case hd lst {
"key" =>
s := " ";
id := hd tl lst;
nv := hd tl tl lst;
tkp : string;
if (id != "-1")
tkp = ".fsearch.ea"+nv+id;
else
tkp = ".fsearch.e"+nv;
char := int hd tl tl tl lst;
s[0] = char;
if (char == '\n' || char == '\t') {
newtkp := ".fsearch";
if (nv == "n")
newtkp += ".eav"+id;
else if (nv == "v") {
newid := string ((int id)+1);
e := tk->cmd(top, ".fsearch.ean"+newid+" cget -width");
if (e == "" || e[0] == '!') {
insertattribrow(top);
newtkp += ".ean"+newid;
}
else
newtkp += ".ean"+newid;
}
focus(top, newtkp);
}
else {
tkcmd(top, tkp+" insert insert {"+s+"}");
tkcmd(top, tkp+" see "+tkcmd(top, tkp+" index insert"));
}
"go" =>
lresults = search(top, filter);
resultstart = 0;
makeresultsframe(top, lresults, 0, maxresults);
selected = nil;
flid = setframe(top, ".fresults", flid);
currmode = RESULTS;
if (chanout != nil)
chanout <-= "search search";
"prev" =>
selected = nil;
resultstart -= maxresults;
if (resultstart < 0)
resultstart = 0;
makeresultsframe(top, lresults, resultstart, maxresults);
flid = setframe(top, ".fresults", flid);
"next" =>
selected = nil;
if (resultstart < 0)
resultstart = 0;
resultstart += maxresults;
if (resultstart >= len lresults)
resultstart -= maxresults;
makeresultsframe(top, lresults, resultstart, maxresults);
flid = setframe(top, ".fresults", flid);
"backto" =>
flid = setframe(top, ".fsearch", flid);
tkcmd(top, ".f.c see 0 "+tkcmd(top, ".fsearch cget -height"));
currmode = SEARCH;
"new" =>
resetsearchscr(top);
tkcmd(top, ".f.c see 0 0");
setscrollr(top, ".fsearch");
"select" =>
if (selected != nil)
tkcmd(top, selected+" configure -bg white");
if (selected == hd tl lst)
selected = nil;
else {
selected = hd tl lst;
tkcmd(top, hd tl lst+" configure -bg #5555FF");
if (chanout != nil)
chanout <-= "search select " +
tkcmd(top, selected+" cget -text") + " " + hd tl tl lst;
}
}
tkcmd(top, "update");
title := <-top.ctxt.ctl or
title = <-top.wreq or
title = <-titlebar =>
if (title == "exit" || title == "ok")
break main;
e := tkclient->wmctl(top, title);
if (e == nil && title[0] == '!') {
(nil, lst) := sys->tokenize(title, " \t\n");
if (len lst >= 2 && hd lst == "!size" && hd tl lst == ".") {
resize(top, -1,-1);
maxresults = getmaxresults(top);
if (currmode == RESULTS) {
makeresultsframe(top, lresults, resultstart, maxresults);
flid = setframe(top, ".fresults", flid);
tkcmd(top, "update");
}
}
}
}
}
}
getmaxresults(top: ref Tk->Toplevel): int
{
val := ((int tkcmd(top, ".f.c cget -height")) - 65)/17;
if (val < 1)
return 1;
return val;
}
setframe(top: ref Tk->Toplevel, f, oldflid: string): string
{
if (oldflid != nil)
tkcmd(top, ".f.c delete " + oldflid);
newflid := tkcmd(top, ".f.c create window 0 0 -window "+f+" -anchor nw");
setscrollr(top, f);
return newflid;
}
setscrollr(top: ref Tk->Toplevel, f: string)
{
h := tkcmd(top, f+" cget -height");
w := tkcmd(top, f+" cget -width");
tkcmd(top, ".f.c configure -scrollregion {0 0 "+w+" "+h+"}");
}
resize(top: ref Tk->Toplevel, width, height: int)
{
if (width == -1) {
width = int tkcmd(top, ". cget -width");
height = int tkcmd(top, ". cget -height");
}
else
tkcmd(top, sys->sprint(". configure -width %d -height %d", width, height));
htitle := int tkcmd(top, ".f cget -acty") - int tkcmd(top, ". cget -acty");
height -= htitle;
ws := int tkcmd(top, ".f.sy cget -width");
hs := int tkcmd(top, ".f.sx cget -height");
tkcmd(top, ".f.c configure -width "+string (width - ws - 8)+
" -height "+string (height - hs - 8));
tkcmd(top, "update");
}
makesearchframe(top: ref Tk->Toplevel)
{
font := " -font /fonts/charon/plain.normal.font";
fontb := " -font /fonts/charon/bold.normal.font";
f := ".fsearch";
tkcmd(top, "frame "+f+" -bg white");
tkcmd(top, "label "+f+".l -text {Search for Resource Attributes} -bg white" + fontb);
tkcmd(top, "grid "+f+".l -row 0 -column 0 -columnspan 3 -sticky nw");
tkcmd(top, "grid rowconfigure "+f+" 0 -minsize 30");
tkcmd(top, "frame "+f+".fgo -bg white");
tkcmd(top, "button "+f+".bs -text {Search} -command {send butchan go} "+font);
tkcmd(top, "button "+f+".bc -text {Clear} -command {send butchan new} "+font);
tkcmd(top, "grid "+f+".bs -row 3 -column 0 -sticky e -padx 2 -pady 5");
tkcmd(top, "grid "+f+".bc -row 3 -column 1 -sticky w -pady 5");
tkcmd(top, "label "+f+".la1 -text {name} -bg white "+fontb);
tkcmd(top, "label "+f+".la2 -text {value} -bg white "+fontb);
tkcmd(top, "grid "+f+".la1 "+f+".la2 -row 1");
insertattribrow(top);
}
insertattribrow(top: ref Tk->Toplevel)
{
(n, nil) := sys->tokenize(tkcmd(top, "grid slaves .fsearch -column 1"), " \t\n");
row := string (n);
sn := string (n - 2);
fsn := ".fsearch.ean"+sn;
fsv := ".fsearch.eav"+sn;
font := " -font /fonts/charon/plain.normal.font";
tkcmd(top, "entry "+fsn+" -width 170 -borderwidth 0 "+font);
tkcmd(top, "bind "+fsn+" <Key> {send butchan key "+sn+" n %s}");
tkcmd(top, "entry "+fsv+" -width 170 -borderwidth 0 "+font);
tkcmd(top, "bind "+fsv+" <Key> {send butchan key "+sn+" v %s}");
tkcmd(top, "grid rowinsert .fsearch "+row);
tkcmd(top, "grid "+fsn+" -column 0 -row "+row+" -sticky w -pady 1 -padx 2");
tkcmd(top, "grid "+fsv+" -column 1 -row "+row+" -sticky w -pady 1");
setscrollr(top, ".fsearch");
}
min(a,b: int): int
{
if (a < b)
return a;
return b;
}
max(a,b: int): int
{
if (a > b)
return a;
return b;
}
makeresultsframe(top: ref Tk->Toplevel, lsrv: list of ref Service, resultstart, maxresults: int)
{
font := " -font /fonts/charon/plain.normal.font";
fontb := " -font /fonts/charon/bold.normal.font";
f := ".fresults";
nresults := len lsrv;
row := 0;
n := 0;
tk->cmd(top, "destroy "+f);
tkcmd(top, "frame "+f+" -bg white");
title := "Search Results";
if (nresults > 0) {
from := resultstart+1;
too := min(resultstart+maxresults, nresults);
if (from == too)
title += sys->sprint(" (displaying match %d of %d)", from, nresults);
else
title += sys->sprint(" (displaying matches %d - %d of %d)", from, too, nresults);
}
tkcmd(top, "label "+f+".l -text {"+title+"} -bg white -anchor w" + fontb);
w1 := int tkcmd(top, f+".l cget -width");
w2 := int tkcmd(top, ".f.c cget -width");
tkcmd(top, f+".l configure -width "+string max(w1,w2));
tkcmd(top, "grid "+f+".l -row 0 -column 0 -columnspan 3 -sticky nw");
tkcmd(top, "grid rowconfigure "+f+" 0 -minsize 30");
tkcmd(top, "frame "+f+".f -bg white");
for (; lsrv != nil; lsrv = tl lsrv) {
if (n >= resultstart && n < resultstart + maxresults) {
srvc := hd lsrv;
(resource, name) := getresname(srvc);
qid := getqid(srvc);
if (qid == nil)
qid = string addqid(srvc);
label := f+".f.lQ"+qid;
tkcmd(top, "label "+label+" -bg white -text {services/"+
resource+"/"+name+"/}"+font);
tkcmd(top, "grid "+label+" -row "+string row+" -column 0 -sticky w");
tkcmd(top, "bind "+label+" <Button-1> {send butchan select "+label+" "+qid+"}");
row++;
}
n++;
}
if (nresults == 0) {
tkcmd(top, "label "+f+".f.l0 -bg white -text {No matches found}"+font);
tkcmd(top, "grid "+f+".f.l0 -row 0 -column 0 -columnspan 3 -sticky w");
}
else {
tkcmd(top, "button "+f+".bprev -text {<<} "+
"-command {send butchan prev}"+font);
if (resultstart == 0)
tkcmd(top, f+".bprev configure -state disabled");
tkcmd(top, "button "+f+".bnext -text {>>} "+
"-command {send butchan next}"+font);
if (resultstart + maxresults >= nresults)
tkcmd(top, f+".bnext configure -state disabled");
tkcmd(top, "grid "+f+".bprev -column 0 -row 2 -padx 5 -pady 5");
tkcmd(top, "grid "+f+".bnext -column 2 -row 2 -padx 5 -pady 5");
}
tkcmd(top, "grid "+f+".f -row 1 -column 0 -columnspan 3 -sticky nw");
tkcmd(top, "grid rowconfigure "+f+" 1 -minsize "+string (maxresults*17));
tkcmd(top, "button "+f+".bsearch -text {Back to Search} "+
"-command {send butchan backto}"+font);
tkcmd(top, "grid "+f+".bsearch -column 1 -row 2 -padx 5 -pady 5");
}
focus(top: ref Tk->Toplevel, newtkp: string)
{
tkcmd(top, "focus "+newtkp);
x1 := int tkcmd(top, newtkp + " cget -actx")
- int tkcmd(top, ".fsearch cget -actx");
y1 := int tkcmd(top, newtkp + " cget -acty")
- int tkcmd(top, ".fsearch cget -acty");
x2 := x1 + int tkcmd(top, newtkp + " cget -width");
y2 := y1 + int tkcmd(top, newtkp + " cget -height") + 45;
tkcmd(top, sys->sprint(".f.c see %d %d %d %d", x1,y1-30,x2,y2));
}
search(top: ref Tk->Toplevel, filter: list of list of (string, string)): list of ref Service
{
searchattrib: list of (string, string) = nil;
(n, nil) := sys->tokenize(tkcmd(top, "grid slaves .fsearch -column 0"), " \t\n");
for (i := 0; i < n - 3; i++) {
attrib := tkcmd(top, ".fsearch.ean"+string i+" get");
val := tkcmd(top, ".fsearch.eav"+string i+" get");
if (val == nil)
val = "*";
if (attrib != nil)
searchattrib = (attrib, val) :: searchattrib;
}
tmp : list of list of (string, string) = nil;
for (; filter != nil; filter = tl filter) {
l := hd filter;
for (tmp2 := searchattrib; tmp2 != nil; tmp2 = tl tmp2)
l = hd tmp2 :: l;
tmp = l :: tmp;
}
filter = tmp;
if (filter == nil)
filter = searchattrib :: nil;
return find(filter);
}
getitem(l : list of (string, ref Service), testid: string): ref Service
{
for (; l != nil; l = tl l) {
(id, srvc) := hd l;
if (testid == id)
return srvc;
}
return nil;
}
delitem(l : list of (string, ref Service), testid: string): list of (string, ref Service)
{
l2 : list of (string, ref Service) = nil;
for (; l != nil; l = tl l) {
(id, srvc) := hd l;
if (testid != id)
l2 = (id, srvc) :: l2;
}
return l2;
}
resetsearchscr(top: ref Tk->Toplevel)
{
(n, nil) := sys->tokenize(tkcmd(top, "grid slaves .fsearch -column 1"), " \t\n");
for (i := 1; i < n - 2; i++)
tkcmd(top, "destroy .fsearch.ean"+string i+" .fsearch.eav"+string i);
s := " delete 0 end";
tkcmd(top, ".fsearch.ean0"+s);
tkcmd(top, ".fsearch.eav0"+s);
}
tkcmd(top: ref Tk->Toplevel, cmd: string): string
{
e := tk->cmd(top, cmd);
if (e != "" && e[0] == '!')
sys->print("Tk error: '%s': %s\n",cmd,e);
return e;
}
tkcmds(top: ref Tk->Toplevel, a: array of string)
{
for (j := 0; j < len a; j++)
tkcmd(top, a[j]);
}