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#include <u.h>
2 
#include <libc.h>
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#include <draw.h>
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#include <event.h>
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#include <bio.h>
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#include "page.h"
7 
 
8 
int resizing;
9 
int mknewwindow;
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int doabort;
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int chatty;
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int reverse = -1;
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int goodps = 1;
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int ppi = 100;
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int teegs = 0;
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int truetoboundingbox;
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int textbits=4, gfxbits=4;
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int wctlfd = -1;
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int stdinfd;
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int truecolor;
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int imagemode;
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int notewatcher;
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int notegp;
24 
 
25 
int
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watcher(void*, char *x)
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{
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	if(strcmp(x, "die") != 0)
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		postnote(PNGROUP, notegp, x);
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	_exits(0);
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	return 0;
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}
33 
 
34 
int
35 
bell(void *u, char *x)
36 
{
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	if(x && strcmp(x, "hangup") == 0)
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		_exits(0);
39 
 
40 
	if(x && strstr(x, "die") == nil)
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		fprint(2, "postnote %d: %s\n", getpid(), x);
42 
 
43 
	/* alarms come from the gs monitor */
44 
	if(x && strstr(x, "alarm")){
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		postnote(PNGROUP, getpid(), "die (gs error)");
46 
		postnote(PNPROC, notewatcher, "die (gs error)");
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	}
48 
 
49 
	/* function mentions u so that it's in the stack trace */
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	if((u == nil || u != x) && doabort)
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		abort();
52 
 
53 
/*	fprint(2, "exiting %d\n", getpid()); */
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	wexits("note");
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	return 0;
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}
57 
 
58 
static int
59 
afmt(Fmt *fmt)
60 
{
61 
	char *s;
62 
 
63 
	s = va_arg(fmt->args, char*);
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	if(s == nil || s[0] == '\0')
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		return fmtstrcpy(fmt, "");
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	else
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		return fmtprint(fmt, "%#q", s);
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}
69 
 
70 
void
71 
usage(void)
72 
{
73 
	fprint(2, "usage: page [-biRrw] [-p ppi] file...\n");
74 
	exits("usage");
75 
}
76 
 
77 
void
78 
main(int argc, char **argv)
79 
{
80 
	Document *doc;
81 
	Biobuf *b;
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	enum { Ninput = 16 };
83 
	uchar buf[Ninput+1];
84 
	int readstdin;
85 
 
86 
	ARGBEGIN{
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	/* "temporary" debugging options */
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	case 'P':
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		goodps = 0;
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		break;
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	case 'v':
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		chatty++;
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		break;
94 
	case 'V':
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		teegs++;
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		break;
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	case 'a':
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		doabort++;
99 
		break;
100 
	case 'T':
101 
		textbits = atoi(EARGF(usage()));
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		gfxbits = atoi(EARGF(usage()));
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		break;
104 
 
105 
	/* real options */
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	case 'R':
107 
		resizing = 1;
108 
		break;
109 
	case 'r':
110 
		reverse = 1;
111 
		break;
112 
	case 'p':
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		ppi = atoi(EARGF(usage()));
114 
		break;
115 
	case 'b':
116 
		truetoboundingbox = 1;
117 
		break;
118 
	case 'w':
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		mknewwindow = 1;
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		resizing = 1;
121 
		break;
122 
	case 'i':
123 
		imagemode = 1;
124 
		break;
125 
	default:
126 
		usage();
127 
	}ARGEND;
128 
 
129 
	notegp = getpid();
130 
 
131 
	switch(notewatcher = fork()){
132 
	case -1:
133 
		sysfatal("fork");
134 
		exits(0);
135 
	default:
136 
		break;
137 
	case 0:
138 
		atnotify(watcher, 1);
139 
		for(;;)
140 
			sleep(1000);
141 
		/* not reached */
142 
	}
143 
 
144 
	rfork(RFNOTEG);
145 
	atnotify(bell, 1);
146 
 
147 
	readstdin = 0;
148 
	if(imagemode == 0 && argc == 0){
149 
		readstdin = 1;
150 
		stdinfd = dup(0, -1);
151 
		close(0);
152 
		open("/dev/cons", OREAD);
153 
	}
154 
 
155 
	quotefmtinstall();
156 
	fmtinstall('a', afmt);
157 
 
158 
	fmtinstall('R', Rfmt);
159 
	fmtinstall('P', Pfmt);
160 
	if(mknewwindow)
161 
		newwin();
162 
 
163 
	if(readstdin){
164 
		b = nil;
165 
		if(readn(stdinfd, buf, Ninput) != Ninput){
166 
			fprint(2, "page: short read reading %s\n", argv[0]);
167 
			wexits("read");
168 
		}
169 
	}else if(argc != 0){
170 
		if(!(b = Bopen(argv[0], OREAD))) {
171 
			fprint(2, "page: cannot open \"%s\"\n", argv[0]);
172 
			wexits("open");
173 
		}
174 
 
175 
		if(Bread(b, buf, Ninput) != Ninput) {
176 
			fprint(2, "page: short read reading %s\n", argv[0]);
177 
			wexits("read");
178 
		}
179 
	}else
180 
		b = nil;
181 
 
182 
	buf[Ninput] = '\0';
183 
	if(imagemode)
184 
		doc = initgfx(nil, 0, nil, nil, 0);
185 
	else if(strncmp((char*)buf, "%PDF-", 5) == 0)
186 
		doc = initpdf(b, argc, argv, buf, Ninput);
187 
	else if(strncmp((char*)buf, "\x04%!", 2) == 0)
188 
		doc = initps(b, argc, argv, buf, Ninput);
189 
	else if(buf[0] == '\x1B' && strstr((char*)buf, "@PJL"))
190 
		doc = initps(b, argc, argv, buf, Ninput);
191 
	else if(strncmp((char*)buf, "%!", 2) == 0)
192 
		doc = initps(b, argc, argv, buf, Ninput);
193 
	else if(strcmp((char*)buf, "\xF7\x02\x01\x83\x92\xC0\x1C;") == 0)
194 
		doc = initdvi(b, argc, argv, buf, Ninput);
195 
	else if(strncmp((char*)buf, "\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1", 8) == 0)
196 
		doc = initmsdoc(b, argc, argv, buf, Ninput);
197 
	else if(strncmp((char*)buf, "x T ", 4) == 0)
198 
		doc = inittroff(b, argc, argv, buf, Ninput);
199 
	else {
200 
		if(ppi != 100) {
201 
			fprint(2, "page: you can't specify -p with graphic files\n");
202 
			wexits("-p and graphics");
203 
		}
204 
		doc = initgfx(b, argc, argv, buf, Ninput);
205 
	}
206 
 
207 
	if(doc == nil) {
208 
		fprint(2, "page: error reading file: %r\n");
209 
		wexits("document init");
210 
	}
211 
 
212 
	if(doc->npage < 1 && !imagemode) {
213 
		fprint(2, "page: no pages found?\n");
214 
		wexits("pagecount");
215 
	}
216 
 
217 
	if(reverse == -1) /* neither cmdline nor ps reader set it */
218 
		reverse = 0;
219 
 
220 
	if(initdraw(0, 0, "page") < 0){
221 
		fprint(2, "page: initdraw failed: %r\n");
222 
		wexits("initdraw");
223 
	}
224 
	display->locking = 1;
225 
 
226 
	truecolor = screen->depth > 8;
227 
	viewer(doc);
228 
	wexits(0);
229 
}
230 
 
231 
void
232 
wexits(char *s)
233 
{
234 
	if(s && *s && strcmp(s, "note") != 0 && mknewwindow)
235 
		sleep(10*1000);
236 
	postnote(PNPROC, notewatcher, "die");
237 
	exits(s);
238 
}