void die(fz_error *eo)
{
fflush(stdout);
fz_printerror(eo);
fz_droperror(eo);
fflush(stderr);
if (drawgc)
fz_droprenderer(drawgc);
closesrc();
abort();
}
void
fz_droperror(fz_error *eo)
{
if (eo->refs > 0)
eo->refs--;
if (eo->refs == 0)
{
if (eo->cause)
fz_droperror(eo->cause);
fz_free(eo);
}
}
/*
* Check if an object is a stream or not.
*/
int
pdf_isstream(pdf_xref *xref, int oid, int gen)
{
fz_error *error;
if (oid < 0 || oid >= xref->len)
return 0;
error = pdf_cacheobject(xref, oid, gen);
if (error)
{
fz_warn("%s", error->msg);
fz_droperror(error);
return 0;
}
return xref->table[oid].stmbuf || xref->table[oid].stmofs;
}
static void separationtoxyz(fz_colorspace *fzcs, float *sep, float *xyz)
{
struct separation *cs = (struct separation *)fzcs;
fz_error *error;
float alt[FZ_MAXCOLORS];
error = pdf_evalfunction(cs->tint, sep, fzcs->n, alt, cs->base->n);
if (error)
{
fz_warn("separation: %s", error->msg);
fz_droperror(error);
xyz[0] = 0;
xyz[1] = 0;
xyz[2] = 0;
return;
}
cs->base->toxyz(cs->base, alt, xyz);
}
void
fz_dropstream(fz_stream *stm)
{
stm->refs --;
if (stm->refs == 0)
{
if (stm->error)
{
fflush(stdout);
fz_printerror(stm->error);
fz_droperror(stm->error);
fflush(stderr);
fz_warn("dropped unhandled ioerror");
}
if (stm->mode == FZ_SWRITE)
{
stm->buffer->eof = 1;
fz_flush(stm);
}
switch (stm->kind)
{
case FZ_SFILE:
close(stm->file);
break;
case FZ_SFILTER:
fz_dropfilter(stm->filter);
fz_dropstream(stm->chain);
break;
case FZ_SBUFFER:
break;
}
fz_dropbuffer(stm->buffer);
fz_free(stm);
}
}
void opensrc(char *filename, char *password, int loadpages)
{
fz_error *error;
fz_obj *obj;
closesrc();
srcname = filename;
error = pdf_newxref(&src);
if (error)
die(error);
error = pdf_loadxref(src, filename);
if (error)
{
fz_printerror(error);
fz_droperror(error);
fz_warn("trying to repair");
error = pdf_repairxref(src, filename);
if (error)
die(error);
}
error = pdf_decryptxref(src);
if (error)
die(error);
if (src->crypt)
{
int okay = pdf_setpassword(src->crypt, password);
if (!okay)
die(fz_throw("invalid password"));
}
if (loadpages)
{
error = pdf_loadpagetree(&srcpages, src);
if (error)
die(error);
}
/* TODO: move into mupdf lib, see pdfapp_open in pdfapp.c */
obj = fz_dictgets(src->trailer, "Root");
if (!obj)
die(error);
error = pdf_loadindirect(&src->root, src, obj);
if (error)
die(error);
obj = fz_dictgets(src->trailer, "Info");
if (obj)
{
error = pdf_loadindirect(&src->info, src, obj);
if (error)
die(error);
}
error = pdf_loadnametrees(src);
if (error)
die(error);
error = pdf_loadoutline(&srcoutline, src);
if (error)
die(error);
}
void pdfapp_open(pdfapp_t *app, char *filename)
{
fz_error *error;
fz_obj *obj;
char *password = "";
/*
* Open PDF and load xref table
*/
app->filename = filename;
error = pdf_newxref(&app->xref);
if (error)
pdfapp_error(app, error);
error = pdf_loadxref(app->xref, filename);
if (error)
{
if (!strncmp(error->msg, "ioerror", 7))
pdfapp_error(app, error);
pdfapp_warn(app,
"There was a problem with file \"%s\".\n"
"It may be corrupted, or generated by broken software.\n\n"
"%s\n\nTrying to continue anyway...",
filename, error->msg);
error = pdf_repairxref(app->xref, filename);
if (error)
pdfapp_error(app, error);
}
/*
* Handle encrypted PDF files
*/
error = pdf_decryptxref(app->xref);
if (error)
pdfapp_error(app, error);
if (app->xref->crypt)
{
error = pdf_setpassword(app->xref->crypt, password);
while (error)
{
fz_droperror(error);
password = winpassword(app, filename);
if (!password)
exit(1);
error = pdf_setpassword(app->xref->crypt, password);
if (error)
pdfapp_warn(app, "Invalid password.");
}
}
/*
* Load page tree
*/
error = pdf_loadpagetree(&app->pages, app->xref);
if (error)
pdfapp_error(app, error);
/*
* Load meta information
* TODO: move this into mupdf library
*/
obj = fz_dictgets(app->xref->trailer, "Root");
if (!obj)
pdfapp_error(app, fz_throw("syntaxerror: missing Root object"));
error = pdf_loadindirect(&app->xref->root, app->xref, obj);
if (error)
pdfapp_error(app, error);
obj = fz_dictgets(app->xref->trailer, "Info");
if (obj)
{
error = pdf_loadindirect(&app->xref->info, app->xref, obj);
if (error)
pdfapp_error(app, error);
}
error = pdf_loadnametrees(app->xref);
if (error)
pdfapp_error(app, error);
error = pdf_loadoutline(&app->outline, app->xref);
if (error)
pdfapp_error(app, error);
app->doctitle = filename;
if (strrchr(app->doctitle, '\\'))
app->doctitle = strrchr(app->doctitle, '\\') + 1;
if (strrchr(app->doctitle, '/'))
app->doctitle = strrchr(app->doctitle, '/') + 1;
if (app->xref->info)
{
obj = fz_dictgets(app->xref->info, "Title");
if (obj)
{
error = pdf_toutf8(&app->doctitle, obj);
if (error)
pdfapp_error(app, error);
}
}
/*
* Start at first page
*/
app->shrinkwrap = 1;
if (app->pageno < 1)
app->pageno = 1;
if (app->zoom <= 0.0)
app->zoom = 1.0;
app->rotate = 0;
app->panx = 0;
app->pany = 0;
pdfapp_showpage(app, 1, 1);
}
