4 * pdf file support for page
15 typedef struct PDFInfo PDFInfo;
21 static Image* pdfdrawpage(Document *d, int page);
22 static char* pdfpagename(Document*, int);
25 #include "pdfprolog.c"
37 gscmd(gs, "/CropBox knownoget {} {[0 0 0 0]} ifelse PAGE==\n");
38 p = Brdline(&gs->gsrd, '\n');
39 p[Blinelen(&gs->gsrd)-1] ='\0';
42 if(tokenize(p+1, f, 4) != 4)
44 r = Rect(atoi(f[0]), atoi(f[1]), atoi(f[2]), atoi(f[3]));
50 initpdf(Biobuf *b, int argc, char **argv, uchar *buf, int nbuf)
62 fprint(2, "can only view one pdf file at a time\n");
66 fprint(2, "reading through pdf...\n");
67 if(b == nil){ /* standard input; spool to disk (ouch) */
68 fd = spooltodisk(buf, nbuf, &fn);
69 sprint(fdbuf, "/dev/fd/%d", fd);
70 b = Bopen(fdbuf, OREAD);
72 fprint(2, "cannot open disk spool file\n");
80 if(!(p = Brdline(b, '\n')) && !(p = Brdline(b, '\r'))) {
81 fprint(2, "cannot find end of first line\n");
84 if(strncmp(p, "%PDF-", 5) != 0) {
89 /* setup structures so one free suffices */
90 p = emalloc(sizeof(*d) + sizeof(*pdf));
97 d->drawpage = pdfdrawpage;
98 d->pagename = pdfpagename;
101 if(spawngs(&pdf->gs, "-dDELAYSAFER") < 0)
104 gscmd(&pdf->gs, "%s", pdfprolog);
107 setdim(&pdf->gs, Rect(0,0,0,0), ppi, 0);
108 gscmd(&pdf->gs, "(%s) (r) file { DELAYSAFER { .setsafe } if } stopped pop pdfopen begin\n", fn);
109 gscmd(&pdf->gs, "pdfpagecount PAGE==\n");
110 p = Brdline(&pdf->gs.gsrd, '\n');
113 fprint(2, "no pages?\n");
117 d->docname = argv[0];
119 gscmd(&pdf->gs, "Trailer\n");
120 bbox = pdfbbox(&pdf->gs);
122 pdf->pagebbox = emalloc(sizeof(Rectangle)*npage);
123 for(i=0; i<npage; i++) {
124 gscmd(&pdf->gs, "%d pdfgetpage\n", i+1);
125 pdf->pagebbox[i] = pdfbbox(&pdf->gs);
126 if(Dx(pdf->pagebbox[i]) <= 0)
127 pdf->pagebbox[i] = bbox;
133 pdfdrawpage(Document *doc, int page)
135 PDFInfo *pdf = doc->extra;
138 gscmd(&pdf->gs, "%d DoPDFPage\n", page+1);
139 im = convert(&pdf->gs.g);
141 fprint(2, "fatal: readimage error %r\n");
149 pdfpagename(Document *d, int page)
154 sprint(str, "p %d", page+1);