ref: 02ac617541ca1a7bf82b1615fb5a58235469b5d3
dir: /appl/lib/print/print.b/
implement Print;
include "sys.m";
sys: Sys;
include "draw.m";
draw: Draw;
Display, Font, Rect, Point, Image, Screen: import draw;
include "bufio.m";
bufio: Bufio;
include "string.m";
str: String;
include "print.m";
MAXNAME: con 80;
DEFMODE: con 8r664;
PAPER_CONFIG: con CONFIG_PATH + "paper.cfg";
PTYPE_CONFIG: con CONFIG_PATH + "ptype.cfg";
PMODE_CONFIG: con CONFIG_PATH + "pmode.cfg";
POPT_CONFIG: con CONFIG_PATH + "popt.cfg";
PRINTER_CONFIG: con CONFIG_PATH + "printer.cfg";
DEFPRINTER: con CONFIG_PATH + "defprinter";
Cfg: adt {
name: string;
pairs: list of (string, string);
};
DEBUG :=0;
all_papers: list of ref Paper;
all_pmodes: list of ref Pmode;
all_ptypes: list of ref Ptype;
all_popts: list of ref Popt;
all_printers: list of ref Printer;
default_printer: ref Printer;
stderr: ref Sys->FD;
printfd: ref Sys->FD;
# Initialization
init(): int
{
sys = load Sys Sys->PATH;
stderr = sys->fildes(2);
draw = load Draw Draw->PATH;
bufio = load Bufio Bufio->PATH;
str = load String String->PATH;
all_papers = read_paper_config();
if (all_papers == nil) return 1;
all_pmodes = read_pmode_config();
if (all_pmodes == nil) return 1;
all_ptypes = read_ptype_config();
if (all_ptypes == nil) return 1;
all_printers = read_printer_config();
if (all_printers == nil) return 1;
all_popts = read_popt_config();
for (pl:=all_printers; pl!=nil; pl=tl pl) {
p := hd pl;
opt := find_popt(all_popts, p.name);
if (opt != nil) p.popt = opt;
else {
p.popt = ref Popt (p.name, hd all_pmodes, hd all_papers, 0, 0);
all_popts = p.popt :: all_popts;
}
}
return 0;
}
# Set printer FD
set_printfd(fd: ref Sys->FD)
{
printfd = fd;
}
# Get default printer
get_defprinter(): ref Printer
{
if (len all_printers == 1) return hd all_printers; # If there's only 1 printer
df := sys->open(DEFPRINTER, Sys->OREAD);
if (df == nil) {
if (all_printers != nil) return hd all_printers;
else return nil;
}
a := array[MAXNAME] of byte;
nb := sys->read(df, a, MAXNAME);
if (nb < 2) return nil;
name := string a[:nb-1];
def := find_printer(all_printers, name);
if (def != nil) return def;
else return hd all_printers;
}
# Set default printer
set_defprinter(p: ref Printer)
{
df := sys->create(DEFPRINTER, Sys->OWRITE, DEFMODE);
if (df == nil) return;
sys->fprint(df, "%s\n", p.name);
}
# Set paper size
get_size(p: ref Printer): (int, int, int) # dpi, xpixels, ypixels
{
if (p == nil) return (0, 0, 0);
load_driver(p);
dpi := p.popt.mode.resx;
(xpix, ypix) := p.pdriver->printable_pixels(p); # This takes account of orientation
return (dpi, xpix, ypix);
}
# Get list of all printers
get_printers(): list of ref Printer
{
return all_printers;
}
# Return list of printer types
get_ptypes(): list of ref Ptype
{
return all_ptypes;
}
# Return list of print modes
get_pmodes(): list of ref Pmode
{
return all_pmodes;
}
# Return list of paper types
get_papers(): list of ref Paper
{
return all_papers;
}
# Return list of print options
get_popts(): list of ref Popt
{
return all_popts;
}
# Save option settings
save_settings(): int
{
return write_popt_config(all_popts);
}
# Print an image
print_image(p: ref Printer, display: ref Draw->Display, im: ref Draw->Image, pcwidth: int, cancel: chan of int): int
{
if (p == nil || im == nil) return 1;
load_driver(p);
popen(p);
(xpix, ypix) := p.pdriver->printable_pixels(p);
imwidth := im.r.max.x - im.r.min.x;
imheight := im.r.max.y - im.r.min.y;
if (pcwidth > 0) pixwidth := int (real xpix * real pcwidth/100.0);
else pixwidth = imwidth;
lmar := (xpix - pixwidth)/2;
fpixwidth := pixwidth;
if (p.popt.orientation != PORTRAIT) {
lmar += pixwidth;
fpixwidth = pixwidth*imheight/imwidth;
}
if (lmar < 0) lmar = 0;
return p.pdriver->sendimage(p, printfd, display, im, fpixwidth, lmar, cancel);
}
# Print text
print_textfd(p: ref Printer, fd: ref Sys->FD, ps: real, pr: int, wrap: int): int
{
load_driver(p);
popen(p);
return p.pdriver->sendtextfd(p, printfd, fd, ps, pr, wrap);
}
# Open printer device if necessary
popen(p: ref Printer)
{
if (printfd != nil) return;
printfd = sys->create(p.device, Sys->OWRITE, DEFMODE);
}
# Find printer item
find_printer(all: list of ref Printer, name: string): ref Printer
{
for (p:=all; p!=nil; p=tl p) if ((hd p).name == name) return hd p;
return nil;
}
# Find popt item
find_popt(all: list of ref Popt, name: string): ref Popt
{
for (p:=all; p!=nil; p=tl p) if ((hd p).name == name) return hd p;
return nil;
}
# Find paper item
find_paper(all: list of ref Paper, name: string): ref Paper
{
for (p:=all; p!=nil; p=tl p) if ((hd p).name == name) return hd p;
return nil;
}
# Find pmode item
find_pmode(all: list of ref Pmode, name: string): ref Pmode
{
for (p:=all; p!=nil; p=tl p) if ((hd p).name == name) return hd p;
return nil;
}
# Find ptype item
find_ptype(all: list of ref Ptype, name: string): ref Ptype
{
for (p:=all; p!=nil; p=tl p) if ((hd p).name == name) return hd p;
return nil;
}
# Read paper config file
read_paper_config(): list of ref Paper
{
(clist, aliases) := read_config(PAPER_CONFIG);
rlist: list of ref Paper;
while (clist != nil) {
this := hd clist;
clist = tl clist;
item := ref Paper(this.name, "", 0.0, 0.0);
for (pairs:= this.pairs; pairs != nil; pairs = tl pairs) {
(name, value) := hd pairs;
case (name) {
"hpcode" =>
item.hpcode = value;
"width_inches" =>
item.width_inches = real value;
"height_inches" =>
item.height_inches = real value;
* =>
sys->fprint(stderr, "Unknown paper config file option: %s\n", name);
}
}
rlist =item :: rlist;
}
for (al:=aliases; al!=nil; al=tl al) {
(new, old) := hd al;
olda := find_paper(rlist, old);
if (olda == nil) sys->fprint(stderr, "Paper alias %s not found\n", old);
else {
newa := ref *olda;
newa.name = new;
rlist = newa :: rlist;
}
}
return rlist;
}
# Read pmode config file
read_pmode_config(): list of ref Pmode
{
(clist, aliases) := read_config(PMODE_CONFIG);
rlist: list of ref Pmode;
while (clist != nil) {
this := hd clist;
clist = tl clist;
item := ref Pmode(this.name, "", 0, 0, 1, 1, 1);
for (pairs:= this.pairs; pairs != nil; pairs = tl pairs) {
(name, value) := hd pairs;
case (name) {
"desc" =>
item.desc = value;
"resx" =>
item.resx = int value;
"resy" =>
item.resy = int value;
"coldepth" =>
item.coldepth = int value;
"blackdepth" =>
item.blackdepth = int value;
"blackresmult" =>
item.blackresmult = int value;
* =>
sys->fprint(stderr, "Unknown pmode config file option: %s\n", name);
}
}
rlist =item :: rlist;
}
for (al:=aliases; al!=nil; al=tl al) {
(new, old) := hd al;
olda := find_pmode(rlist, old);
if (olda == nil) sys->fprint(stderr, "Pmode alias %s not found\n", old);
else {
newa := ref *olda;
newa.name = new;
rlist = newa :: rlist;
}
}
return rlist;
}
# Readp Ptype config file
read_ptype_config(): list of ref Ptype
{
(clist, aliases) := read_config(PTYPE_CONFIG);
rlist: list of ref Ptype;
while (clist != nil) {
this := hd clist;
clist = tl clist;
item := ref Ptype(this.name, "", nil, "", "");
for (pairs:= this.pairs; pairs != nil; pairs = tl pairs) {
(name, value) := hd pairs;
case (name) {
"desc" =>
item.desc = value;
"driver" =>
item.driver = value;
"hpmapfile" =>
item.hpmapfile = value;
"modes" =>
item.modes = make_pmode_list(value);
* =>
sys->fprint(stderr, "Unknown ptype config file option: %s\n", name);
}
}
if (item.modes == nil) {
sys->fprint(stderr, "No print modes for ptype %s\n", item.name);
continue;
}
rlist = item :: rlist;
}
for (al:=aliases; al!=nil; al=tl al) {
(new, old) := hd al;
olda := find_ptype(rlist, old);
if (olda == nil) sys->fprint(stderr, "Ptype alias %s not found\n", old);
else {
newa := ref *olda;
newa.name = new;
rlist = newa :: rlist;
}
}
return rlist;
}
# Make a list of pmodes from a string
make_pmode_list(sl: string): list of ref Pmode
{
pml: list of ref Pmode;
(n, toks) := sys->tokenize(sl, " \t");
if (n == 0) return nil;
for (i:=0; i<n; i++) {
pms := hd toks;
toks = tl toks;
pm := find_pmode(all_pmodes, pms);
if (pm == nil) {
sys->fprint(stderr, "unknown pmode: %s\n", pms);
continue;
}
pml = pm :: pml;
}
return pml;
}
# Read popt config file
read_popt_config(): list of ref Popt
{
(clist, aliases) := read_config(POPT_CONFIG);
rlist: list of ref Popt;
while (clist != nil) {
this := hd clist;
clist = tl clist;
item := ref Popt(this.name, nil, nil, 0, 0);
for (pairs:= this.pairs; pairs != nil; pairs = tl pairs) {
(name, value) := hd pairs;
case (name) {
"mode" =>
item.mode = find_pmode(all_pmodes, value);
if (item.mode == nil) sys->fprint(stderr, "Config error: Pmode not found: %s\n", value);
"paper" =>
item.paper = find_paper(all_papers, value);
if (item.paper == nil) sys->fprint(stderr, "Config error: paper not found: %s\n", value);
"orientation" =>
item.orientation = int value;
"duplex" =>
item.duplex = int value;
* =>
sys->fprint(stderr, "Unknown popt config file option: %s\n", name);
}
}
if (item.mode == nil) {
sys->fprint(stderr, "No print mode for printer %s\n", item.name);
continue;
}
if (item.paper == nil) {
sys->fprint(stderr, "No paper size for printer %s\n", item.name);
continue;
}
rlist = item :: rlist;
}
for (al:=aliases; al!=nil; al=tl al) {
(new, old) := hd al;
olda := find_popt(rlist, old);
if (olda == nil) sys->fprint(stderr, "Popt alias %s not found\n", old);
else {
newa := ref *olda;
newa.name = new;
rlist = newa :: rlist;
}
}
return rlist;
}
# Read printer config file
read_printer_config(): list of ref Printer
{
(clist, aliases) := read_config(PRINTER_CONFIG);
rlist: list of ref Printer;
while (clist != nil) {
this := hd clist;
clist = tl clist;
item := ref Printer(this.name, nil, "", nil, nil);
for (pairs:= this.pairs; pairs != nil; pairs = tl pairs) {
(name, value) := hd pairs;
case (name) {
"ptype" =>
item.ptype = find_ptype(all_ptypes, value);
if (item.ptype == nil) sys->fprint(stderr, "Config error: Ptype not found: %s\n", value);
"device" =>
item.device = value;
* =>
sys->fprint(stderr, "Unknown printer config file option: %s\n", name);
}
}
if (item.ptype == nil) {
sys->fprint(stderr, "No printer type for printer %s\n", item.name);
continue;
}
rlist = item :: rlist;
}
for (al:=aliases; al!=nil; al=tl al) {
(new, old) := hd al;
olda := find_printer(rlist, old);
if (olda == nil) sys->fprint(stderr, "Ptype alias %s not found\n", old);
else {
newa := ref *olda;
newa.name = new;
rlist = newa :: rlist;
}
}
return rlist;
}
# Write opt config file
write_popt_config(plist: list of ref Popt): int
{
cfl: list of Cfg;
for (pl:=plist; pl!=nil; pl=tl pl) {
po := hd pl;
cf := Cfg(po.name, nil);
cf.pairs = ("mode", po.mode.name) :: cf.pairs;
cf.pairs = ("paper", po.paper.name) :: cf.pairs;
cf.pairs = ("orientation", sys->sprint("%d", po.orientation)) :: cf.pairs;
cf.pairs = ("duplex", sys->sprint("%d", po.duplex)) :: cf.pairs;
cfl = cf :: cfl;
}
return write_config(POPT_CONFIG, cfl, nil);
}
write_config(fspec: string, clist: list of Cfg, aliases: list of (string, string)): int
{
fd := sys->create(fspec, Sys->OWRITE, DEFMODE);
if (fd == nil) {
sys->fprint(stderr, "Failed to write to config file %s: %r\n", fspec);
return 1;
}
for (cfl:=clist; cfl!=nil; cfl=tl cfl) {
cf := hd cfl;
sys->fprint(fd, "%s=\n", cf.name);
for (pl:=cf.pairs; pl!=nil; pl=tl pl) {
(name, value) := hd pl;
if (sys->fprint(fd, "\t%s=%s\n", name, value) < 0) return 2;
}
}
for (al:=aliases; al!=nil; al=tl al) {
(new, old) := hd al;
if (sys->fprint(fd, "%s=%s\n", new, old)) return 2;
}
return 0;
}
# Read in a config file and return list of items and aliases
read_config(fspec: string): (list of Cfg, list of (string, string))
{
ib := bufio->open(fspec, Bufio->OREAD);
if (ib == nil) {
sys->fprint(stderr, "Failed to open config file %s: %r\n", fspec);
return (nil, nil);
}
clist: list of Cfg;
plist: list of (string, string);
section := "";
aliases : list of (string, string);
while ((line := bufio->ib.gets('\n')) != nil) {
if (line[0] == '#') continue;
if (line[len line-1] == '\n') line = line[:len line-1];
if (len line == 0) continue;
if (line[0] != ' ' && line[0] != '\t') {
if (section != "") clist = Cfg (section, plist) :: clist;
section = "";
plist = nil;
sspec := strip(line);
(n, toks) := sys->tokenize(sspec, "=");
if (n == 0) continue;
if (n > 2) {
sys->fprint(stderr, "Error in config file %s\n", fspec);
continue;
}
if (n == 2) {
asection := hd toks;
toks = tl toks;
alias := hd toks;
aliases = (asection, alias) :: aliases;
continue;
}
section = hd toks;
} else {
(n, toks) := sys->tokenize(line, "=");
if (n == 2) {
name := strip(hd toks);
toks = tl toks;
value := strip(hd toks);
plist = (name, value) :: plist;
}
}
}
if (section != "") clist = Cfg (section, plist) :: clist;
return (clist, aliases);
}
# Load printer driver if necessary
load_driver(p: ref Printer)
{
if (p.pdriver != nil) return;
modpath := Pdriver->PATHPREFIX + p.ptype.driver;
p.pdriver = load Pdriver modpath;
if (p.pdriver == nil) sys->fprint(stderr, "Failed to load driver %s: %r\n", modpath);
p.pdriver->init(DEBUG);
}
# Strip leading/trailing spaces
strip(s: string): string
{
(dummy1, s1) := str->splitl(s, "^ \t");
(s2, dummy2) := str->splitr(s1, "^ \t");
return s2;
}