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#include <u.h>
#include <libc.h>
#include <draw.h>
#include <thread.h>
#include <bio.h>
#include <cursor.h>
#include "page.h"
int resizing;
int mknewwindow;
int doabort;
int chatty;
int reverse = -1;
int goodps = 1;
int ppi = 100;
int teegs = 0;
int truetoboundingbox;
int textbits=4, gfxbits=4;
int stdinfd;
int truecolor;
int imagemode;
int notewatcher;
int notegp;
int
watcher(void *v, char *x)
{
USED(v);
if(strcmp(x, "die") != 0)
postnote(PNGROUP, notegp, x);
threadexitsall(0);
return 0;
}
void
watcherproc(void *v)
{
threadnotify(watcher, 1);
for(;;)
sleep(1000);
}
int
bell(void *u, char *x)
{
if(x && strcmp(x, "hangup") == 0)
threadexitsall(0);
if(x && strstr(x, "die") == nil)
fprint(2, "postnote %d: %s\n", getpid(), x);
/* alarms come from the gs monitor */
if(x && strstr(x, "alarm")){
postnote(PNGROUP, getpid(), "die (gs error)");
postnote(PNPROC, notewatcher, "die (gs error)");
}
/* function mentions u so that it's in the stack trace */
if((u == nil || u != x) && doabort)
abort();
/* fprint(2, "exiting %d\n", getpid()); */
wexits("note");
return 0;
}
static int
afmt(Fmt *fmt)
{
char *s;
s = va_arg(fmt->args, char*);
if(s == nil || s[0] == '\0')
return fmtstrcpy(fmt, "");
else
return fmtprint(fmt, "%#q", s);
}
void
usage(void)
{
fprint(2, "usage: page [-biRrw] [-p ppi] file...\n");
wexits("usage");
}
void
threadmain(int argc, char **argv)
{
Document *doc;
Biobuf *b;
char *basename = argv[0];
enum { Ninput = 16 };
uchar buf[Ninput+1];
int readstdin;
ARGBEGIN{
/* "temporary" debugging options */
case 'P':
goodps = 0;
break;
case 'v':
chatty++;
break;
case 'V':
teegs++;
break;
case 'a':
doabort++;
break;
case 'T':
textbits = atoi(EARGF(usage()));
gfxbits = atoi(EARGF(usage()));
break;
/* real options */
case 'R':
resizing = 1;
break;
case 'r':
reverse = 1;
break;
case 'p':
ppi = atoi(EARGF(usage()));
break;
case 'b':
truetoboundingbox = 1;
break;
case 'w':
fprint(2, "%s: -w has only the effect of -R X11 systems\n", basename);
resizing = 1;
break;
case 'i':
imagemode = 1;
break;
case 'W':
winsize = EARGF(usage());
break;
default:
usage();
}ARGEND;
notegp = getpid();
notewatcher = proccreate(watcherproc, NULL, 1024);
if(notewatcher == -1){
sysfatal("proccreate");
threadexitsall(0);
}
rfork(RFNOTEG);
threadnotify(bell, 1);
readstdin = 0;
if(imagemode == 0 && argc == 0){
readstdin = 1;
stdinfd = dup(0, -1);
close(0);
open("/dev/tty", OREAD);
}
quotefmtinstall();
fmtinstall('a', afmt);
fmtinstall('R', Rfmt);
fmtinstall('P', Pfmt);
/*
if(mknewwindow)
newwin(); */
if(readstdin){
b = nil;
if(readn(stdinfd, buf, Ninput) != Ninput){
fprint(2, "page: short read reading %s\n", argv[0]);
wexits("read");
}
}else if(argc != 0){
if(!(b = Bopen(argv[0], OREAD))) {
fprint(2, "page: cannot open \"%s\"\n", argv[0]);
wexits("open");
}
if(Bread(b, buf, Ninput) != Ninput) {
fprint(2, "page: short read reading %s\n", argv[0]);
wexits("read");
}
}else
b = nil;
buf[Ninput] = '\0';
if(imagemode)
doc = initgfx(nil, 0, nil, nil, 0);
else if(strncmp((char*)buf, "%PDF-", 5) == 0)
doc = initpdf(b, argc, argv, buf, Ninput);
else if(strncmp((char*)buf, "\x04%!", 2) == 0)
doc = initps(b, argc, argv, buf, Ninput);
else if(buf[0] == '\x1B' && strstr((char*)buf, "@PJL"))
doc = initps(b, argc, argv, buf, Ninput);
else if(strncmp((char*)buf, "%!", 2) == 0)
doc = initps(b, argc, argv, buf, Ninput);
else if(strcmp((char*)buf, "\xF7\x02\x01\x83\x92\xC0\x1C;") == 0)
doc = initdvi(b, argc, argv, buf, Ninput);
else if(strncmp((char*)buf, "\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1", 8) == 0)
doc = initmsdoc(b, argc, argv, buf, Ninput);
else if(strncmp((char*)buf, "x T ", 4) == 0)
doc = inittroff(b, argc, argv, buf, Ninput);
else {
if(ppi != 100) {
fprint(2, "page: you can't specify -p with graphic files\n");
wexits("-p and graphics");
}
doc = initgfx(b, argc, argv, buf, Ninput);
}
if(doc == nil) {
fprint(2, "page: error reading file: %r\n");
wexits("document init");
}
if(doc->npage < 1 && !imagemode) {
fprint(2, "page: no pages found?\n");
wexits("pagecount");
}
if(reverse == -1) /* neither cmdline nor ps reader set it */
reverse = 0;
if(initdraw(0, 0, "page") < 0){
fprint(2, "page: initdraw failed: %r\n");
wexits("initdraw");
}
truecolor = screen->depth > 8;
viewer(doc);
wexits(0);
}
void
wexits(char *s)
{
if(s && *s && strcmp(s, "note") != 0 && mknewwindow)
sleep(10*1000);
postnote(PNPROC, notewatcher, "die");
postnote(PNGROUP, getpid(), "die");
threadexitsall(s);
}
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