static void merge_range(const char *range)
{
int start, end, i, count;
pdf_graft_map *graft_map;
count = pdf_count_pages(ctx, doc_src);
graft_map = pdf_new_graft_map(ctx, doc_des);
fz_try(ctx)
{
while ((range = fz_parse_page_range(ctx, range, &start, &end, count)))
{
if (start < end)
for (i = start; i <= end; ++i)
page_merge(i, -1, graft_map);
else
for (i = start; i >= end; --i)
page_merge(i, -1, graft_map);
}
}
fz_always(ctx)
{
pdf_drop_graft_map(ctx, graft_map);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
}
static int _pdf_doc_count_pages(const struct _pdf_doc *self)
{
if (self->xref)
return pdf_count_pages(self->xref);
return 0;
}
int j_mu_count_pages(void* p_ctx, void* p_doc)
{
fz_context* ctx = (fz_context*) p_ctx;
pdf_document* doc = (pdf_document*) p_doc;
int n = pdf_count_pages(ctx, doc);
return n;
}
PDFDocument* PDFDocument::Open(const std::string& path,
int page_cache_size) {
fz_context* context = fz_new_context(nullptr, nullptr, FZ_STORE_DEFAULT);
pdf_document* raw_pdf_document = nullptr;
fz_try(context) {
raw_pdf_document = pdf_open_document(context, path.c_str());
if ((raw_pdf_document == nullptr) ||
(!pdf_count_pages(context, raw_pdf_document))) {
fz_throw(
context,
FZ_ERROR_GENERIC,
const_cast<char*>("Cannot open document \"%s\""),
path.c_str());
}
} fz_catch(context) {
if (raw_pdf_document != nullptr) {
pdf_drop_document(context, raw_pdf_document);
}
fz_drop_context(context);
return nullptr;
}
PDFDocument* document = new PDFDocument(page_cache_size);
document->_fz_context = context;
document->_pdf_document = raw_pdf_document;
return document;
}
int pdfsign_main(int argc, char **argv)
{
fz_context *ctx;
pdf_document *doc;
char *password = "";
int i, n, c;
pdf_page *page = NULL;
while ((c = fz_getopt(argc, argv, "p:")) != -1)
{
switch (c)
{
case 'p': password = fz_optarg; break;
default: usage(); break;
}
}
if (argc - fz_optind < 1)
usage();
filename = argv[fz_optind++];
ctx = fz_new_context(NULL, NULL, FZ_STORE_UNLIMITED);
if (!ctx)
{
fprintf(stderr, "cannot initialize context\n");
exit(1);
}
fz_var(page);
doc = pdf_open_document(ctx, filename);
fz_try(ctx)
{
if (pdf_needs_password(ctx, doc))
if (!pdf_authenticate_password(ctx, doc, password))
fz_warn(ctx, "cannot authenticate password: %s", filename);
n = pdf_count_pages(ctx, doc);
for (i = 0; i < n; ++i)
{
page = pdf_load_page(ctx, doc, i);
verify_page(ctx, doc, i, page);
fz_drop_page(ctx, (fz_page*)page);
page = NULL;
}
}
fz_always(ctx)
pdf_drop_document(ctx, doc);
fz_catch(ctx)
{
fz_drop_page(ctx, (fz_page*)page);
fprintf(stderr, "error verify signatures: %s\n", fz_caught_message(ctx));
}
fz_flush_warnings(ctx);
fz_drop_context(ctx);
return 0;
}
static void
showinfo(char *filename, int show, char *pagelist)
{
int page, spage, epage;
char *spec, *dash;
int allpages;
int pagecount;
if (!doc)
infousage();
allpages = !strcmp(pagelist, "1-");
pagecount = pdf_count_pages(doc);
spec = fz_strsep(&pagelist, ",");
while (spec && pagecount)
{
dash = strchr(spec, '-');
if (dash == spec)
spage = epage = pagecount;
else
spage = epage = atoi(spec);
if (dash)
{
if (strlen(dash) > 1)
epage = atoi(dash + 1);
else
epage = pagecount;
}
if (spage > epage)
page = spage, spage = epage, epage = page;
spage = fz_clampi(spage, 1, pagecount);
epage = fz_clampi(epage, 1, pagecount);
if (allpages)
printf("Retrieving info from pages %d-%d...\n", spage, epage);
for (page = spage; page <= epage; page++)
{
gatherpageinfo(page, show);
if (!allpages)
{
printf("Page %d:\n", page);
printinfo(filename, show, page);
printf("\n");
}
}
spec = fz_strsep(&pagelist, ",");
}
if (allpages)
printinfo(filename, show, -1);
}
void
pdf_insert_page(pdf_document *doc, pdf_page *page, int at)
{
fz_context *ctx = doc->ctx;
int count = pdf_count_pages(doc);
pdf_obj *parent, *kids;
pdf_obj *page_ref;
int i;
page_ref = pdf_new_ref(doc, page->me);
fz_try(ctx)
{
if (count == 0)
{
/* TODO: create new page tree? */
fz_throw(ctx, FZ_ERROR_GENERIC, "empty page tree, cannot insert page");
}
else if (at >= count)
{
if (at > count)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot insert page beyond end of page tree");
/* append after last page */
pdf_lookup_page_loc(doc, count - 1, &parent, &i);
kids = pdf_dict_gets(parent, "Kids");
pdf_array_insert(kids, page_ref, i + 1);
}
else
{
/* insert before found page */
pdf_lookup_page_loc(doc, at, &parent, &i);
kids = pdf_dict_gets(parent, "Kids");
pdf_array_insert(kids, page_ref, i);
}
pdf_dict_puts(page->me, "Parent", parent);
/* Adjust page counts */
while (parent)
{
int count = pdf_to_int(pdf_dict_gets(parent, "Count"));
pdf_dict_puts_drop(parent, "Count", pdf_new_int(doc, count + 1));
parent = pdf_dict_gets(parent, "Parent");
}
}
fz_always(ctx)
{
pdf_drop_obj(page_ref);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
}
static void wmupdf_convert_pages_to_forms(pdf_document *xref,fz_context *ctx,int *srcpageused)
{
int i,pagecount;
pagecount = pdf_count_pages(xref);
for (i=0;i<=pagecount;i++)
if (srcpageused[i])
wmupdf_convert_single_page_to_form(xref,ctx,i);
}
void juggler_page_tree_changed(juggler_t *juggler)
{
juggler->pagecount = pdf_count_pages(juggler->ctx, juggler->pdf);
size_t i;
for(i = 0; i < RENDER_BUFFER_COUNT; i++)
juggler->rendered[i].samples = NULL;
juggler->recent_rendered = 0;
juggler->sizes = NULL;
get_all_pages_size(juggler);
}
JNIEXPORT int JNICALL
Java_com_artifex_mupdf_MuPDFCore_openFile(JNIEnv * env, jobject thiz, jstring jfilename)
{
const char *filename;
int pages = 0;
filename = (*env)->GetStringUTFChars(env, jfilename, NULL);
if (filename == NULL)
{
LOGE("Failed to get filename");
return 0;
}
/* 128 MB store for low memory devices. Tweak as necessary. */
ctx = fz_new_context(NULL, NULL, 128 << 20);
if (!ctx)
{
LOGE("Failed to initialise context");
return 0;
}
xref = NULL;
fz_try(ctx)
{
colorspace = fz_device_rgb;
LOGE("Opening document...");
fz_try(ctx)
{
xref = pdf_open_document(ctx, filename);
}
fz_catch(ctx)
{
fz_throw(ctx, "Cannot open document: '%s'\n", filename);
}
pages = pdf_count_pages(xref);
LOGE("Done! %d pages", pages);
}
fz_catch(ctx)
{
LOGE("Failed: %s", ctx->error->message);
pdf_close_document(xref);
xref = NULL;
fz_free_context(ctx);
ctx = NULL;
}
return pages;
}
void benchfile(char *pdffilename, int loadonly, int pageNo)
{
pdf_document *xref = NULL;
mstimer timer;
int page_count;
int curpage;
fz_context *ctx = fz_new_context(NULL, NULL, FZ_STORE_DEFAULT);
if (!ctx) {
logbench("Error: fz_new_context() failed\n");
return;
}
logbench("Starting: %s\n", pdffilename);
timerstart(&timer);
fz_var(xref);
fz_try(ctx) {
xref = openxref(ctx, pdffilename);
}
fz_catch(ctx) {
goto Exit;
}
timerstop(&timer);
logbench("load: %.2f ms\n", timeinms(&timer));
page_count = pdf_count_pages(xref);
logbench("page count: %d\n", page_count);
if (loadonly)
goto Exit;
for (curpage = 1; curpage <= page_count; curpage++) {
pdf_page *page;
if ((-1 != pageNo) && (pageNo != curpage))
continue;
page = benchloadpage(ctx, xref, curpage);
if (page) {
benchrenderpage(ctx, xref, page, curpage);
pdf_free_page(xref, page);
}
}
Exit:
logbench("Finished: %s\n", pdffilename);
pdf_close_document(xref);
fz_free_context(ctx);
}
static int
showpages(fz_context *ctx, pdf_document *doc, fz_output *out, char *pagelist)
{
int page, spage, epage;
char *spec, *dash;
int pagecount;
int ret = 0;
if (!doc)
infousage();
pagecount = pdf_count_pages(ctx, doc);
spec = fz_strsep(&pagelist, ",");
while (spec && pagecount)
{
dash = strchr(spec, '-');
if (dash == spec)
spage = epage = pagecount;
else
spage = epage = atoi(spec);
if (dash)
{
if (strlen(dash) > 1)
epage = atoi(dash + 1);
else
epage = pagecount;
}
if (spage > epage)
page = spage, spage = epage, epage = page;
spage = fz_clampi(spage, 1, pagecount);
epage = fz_clampi(epage, 1, pagecount);
for (page = spage; page <= epage; page++)
{
ret |= showpage(ctx, doc, out, page);
}
spec = fz_strsep(&pagelist, ",");
}
return ret;
}
static int
showpages(fz_context *ctx, pdf_document *doc, fz_output *out, const char *pagelist)
{
int page, spage, epage;
int pagecount;
int ret = 0;
if (!doc)
infousage();
pagecount = pdf_count_pages(ctx, doc);
while ((pagelist = fz_parse_page_range(ctx, pagelist, &spage, &epage, pagecount)))
{
if (spage > epage)
page = spage, spage = epage, epage = page;
for (page = spage; page <= epage; page++)
ret |= showpage(ctx, doc, out, page);
}
return ret;
}
pdf_document *openxref(fz_context *ctx, char *filename)
{
pdf_document *xref = pdf_open_document(ctx, filename);
fz_try(ctx)
{
if (pdf_needs_password(xref))
{
logbench("Warning: password protected document\n");
fz_throw(ctx, "document requires password");
}
pdf_count_pages(xref);
}
fz_catch(ctx)
{
pdf_close_document(xref);
fz_rethrow(ctx);
}
return xref;
}
int pdfinfo_main(int argc, char **argv)
{
enum { NO_FILE_OPENED, NO_INFO_GATHERED, INFO_SHOWN } state;
char *filename = "";
char *password = "";
int show = ALL;
int c;
while ((c = fz_getopt(argc, argv, "mfispxd:")) != -1)
{
switch (c)
{
case 'm': if (show == ALL) show = DIMENSIONS; else show |= DIMENSIONS; break;
case 'f': if (show == ALL) show = FONTS; else show |= FONTS; break;
case 'i': if (show == ALL) show = IMAGES; else show |= IMAGES; break;
case 's': if (show == ALL) show = SHADINGS; else show |= SHADINGS; break;
case 'p': if (show == ALL) show = PATTERNS; else show |= PATTERNS; break;
case 'x': if (show == ALL) show = XOBJS; else show |= XOBJS; break;
case 'd': password = fz_optarg; break;
default:
infousage();
break;
}
}
if (fz_optind == argc)
infousage();
ctx = fz_new_context(NULL, NULL, FZ_STORE_UNLIMITED);
if (!ctx)
{
fprintf(stderr, "cannot initialise context\n");
exit(1);
}
state = NO_FILE_OPENED;
while (fz_optind < argc)
{
if (state == NO_FILE_OPENED || !arg_is_page_range(argv[fz_optind]))
{
if (state == NO_INFO_GATHERED)
{
showinfo(filename, show, "1-");
}
closexref();
filename = argv[fz_optind];
printf("%s:\n", filename);
doc = pdf_open_document_no_run(ctx, filename);
if (pdf_needs_password(doc))
if (!pdf_authenticate_password(doc, password))
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot authenticate password: %s", filename);
pagecount = pdf_count_pages(doc);
showglobalinfo();
state = NO_INFO_GATHERED;
}
else
{
showinfo(filename, show, argv[fz_optind]);
state = INFO_SHOWN;
}
fz_optind++;
}
if (state == NO_INFO_GATHERED)
showinfo(filename, show, "1-");
closexref();
fz_free_context(ctx);
return 0;
}
static void retainpages(fz_context *ctx, globals *glo, int argc, char **argv)
{
pdf_obj *oldroot, *root, *pages, *kids, *countobj, *parent, *olddests;
pdf_document *doc = glo->doc;
int argidx = 0;
pdf_obj *names_list = NULL;
pdf_obj *outlines;
int pagecount;
int i;
int *page_object_nums;
/* Keep only pages/type and (reduced) dest entries to avoid
* references to unretained pages */
oldroot = pdf_dict_get(ctx, pdf_trailer(ctx, doc), PDF_NAME_Root);
pages = pdf_dict_get(ctx, oldroot, PDF_NAME_Pages);
olddests = pdf_load_name_tree(ctx, doc, PDF_NAME_Dests);
outlines = pdf_dict_get(ctx, oldroot, PDF_NAME_Outlines);
root = pdf_new_dict(ctx, doc, 3);
pdf_dict_put(ctx, root, PDF_NAME_Type, pdf_dict_get(ctx, oldroot, PDF_NAME_Type));
pdf_dict_put(ctx, root, PDF_NAME_Pages, pdf_dict_get(ctx, oldroot, PDF_NAME_Pages));
pdf_dict_put(ctx, root, PDF_NAME_Outlines, outlines);
pdf_update_object(ctx, doc, pdf_to_num(ctx, oldroot), root);
/* Create a new kids array with only the pages we want to keep */
parent = pdf_new_indirect(ctx, doc, pdf_to_num(ctx, pages), pdf_to_gen(ctx, pages));
kids = pdf_new_array(ctx, doc, 1);
/* Retain pages specified */
while (argc - argidx)
{
int page, spage, epage;
char *spec, *dash;
char *pagelist = argv[argidx];
pagecount = pdf_count_pages(ctx, doc);
spec = fz_strsep(&pagelist, ",");
while (spec)
{
dash = strchr(spec, '-');
if (dash == spec)
spage = epage = pagecount;
else
spage = epage = atoi(spec);
if (dash)
{
if (strlen(dash) > 1)
epage = atoi(dash + 1);
else
epage = pagecount;
}
spage = fz_clampi(spage, 1, pagecount);
epage = fz_clampi(epage, 1, pagecount);
if (spage < epage)
for (page = spage; page <= epage; ++page)
retainpage(ctx, doc, parent, kids, page);
else
for (page = spage; page >= epage; --page)
retainpage(ctx, doc, parent, kids, page);
spec = fz_strsep(&pagelist, ",");
}
argidx++;
}
pdf_drop_obj(ctx, parent);
/* Update page count and kids array */
countobj = pdf_new_int(ctx, doc, pdf_array_len(ctx, kids));
pdf_dict_put(ctx, pages, PDF_NAME_Count, countobj);
pdf_drop_obj(ctx, countobj);
pdf_dict_put(ctx, pages, PDF_NAME_Kids, kids);
pdf_drop_obj(ctx, kids);
/* Force the next call to pdf_count_pages to recount */
glo->doc->page_count = 0;
pagecount = pdf_count_pages(ctx, doc);
page_object_nums = fz_calloc(ctx, pagecount, sizeof(*page_object_nums));
for (i = 0; i < pagecount; i++)
{
pdf_obj *pageref = pdf_lookup_page_obj(ctx, doc, i);
page_object_nums[i] = pdf_to_num(ctx, pageref);
}
/* If we had an old Dests tree (now reformed as an olddests
* dictionary), keep any entries in there that point to
* valid pages. This may mean we keep more than we need, but
* it's safe at least. */
if (olddests)
{
pdf_obj *names = pdf_new_dict(ctx, doc, 1);
pdf_obj *dests = pdf_new_dict(ctx, doc, 1);
int len = pdf_dict_len(ctx, olddests);
names_list = pdf_new_array(ctx, doc, 32);
for (i = 0; i < len; i++)
{
pdf_obj *key = pdf_dict_get_key(ctx, olddests, i);
pdf_obj *val = pdf_dict_get_val(ctx, olddests, i);
pdf_obj *dest = pdf_dict_get(ctx, val, PDF_NAME_D);
dest = pdf_array_get(ctx, dest ? dest : val, 0);
if (dest_is_valid_page(ctx, dest, page_object_nums, pagecount))
{
pdf_obj *key_str = pdf_new_string(ctx, doc, pdf_to_name(ctx, key), strlen(pdf_to_name(ctx, key)));
pdf_array_push(ctx, names_list, key_str);
pdf_array_push(ctx, names_list, val);
pdf_drop_obj(ctx, key_str);
}
}
pdf_dict_put(ctx, dests, PDF_NAME_Names, names_list);
pdf_dict_put(ctx, names, PDF_NAME_Dests, dests);
pdf_dict_put(ctx, root, PDF_NAME_Names, names);
pdf_drop_obj(ctx, names);
pdf_drop_obj(ctx, dests);
pdf_drop_obj(ctx, olddests);
}
/* Edit each pages /Annot list to remove any links that point to
* nowhere. */
for (i = 0; i < pagecount; i++)
{
pdf_obj *pageref = pdf_lookup_page_obj(ctx, doc, i);
pdf_obj *pageobj = pdf_resolve_indirect(ctx, pageref);
pdf_obj *annots = pdf_dict_get(ctx, pageobj, PDF_NAME_Annots);
int len = pdf_array_len(ctx, annots);
int j;
for (j = 0; j < len; j++)
{
pdf_obj *o = pdf_array_get(ctx, annots, j);
if (!pdf_name_eq(ctx, pdf_dict_get(ctx, o, PDF_NAME_Subtype), PDF_NAME_Link))
continue;
if (!dest_is_valid(ctx, o, pagecount, page_object_nums, names_list))
{
/* Remove this annotation */
pdf_array_delete(ctx, annots, j);
j--;
}
}
}
if (strip_outlines(ctx, doc, outlines, pagecount, page_object_nums, names_list) == 0)
{
pdf_dict_del(ctx, root, PDF_NAME_Outlines);
}
fz_free(ctx, page_object_nums);
pdf_drop_obj(ctx, names_list);
pdf_drop_obj(ctx, root);
}
static void retainpages(int argc, char **argv)
{
fz_obj *oldroot, *root, *pages, *kids, *countobj, *parent, *olddests;
/* Keep only pages/type and (reduced) dest entries to avoid
* references to unretained pages */
oldroot = fz_dict_gets(xref->trailer, "Root");
pages = fz_dict_gets(oldroot, "Pages");
olddests = pdf_load_name_tree(xref, "Dests");
root = fz_new_dict(ctx, 2);
fz_dict_puts(root, "Type", fz_dict_gets(oldroot, "Type"));
fz_dict_puts(root, "Pages", fz_dict_gets(oldroot, "Pages"));
pdf_update_object(xref, fz_to_num(oldroot), fz_to_gen(oldroot), root);
fz_drop_obj(root);
/* Create a new kids array with only the pages we want to keep */
parent = fz_new_indirect(ctx, fz_to_num(pages), fz_to_gen(pages), xref);
kids = fz_new_array(ctx, 1);
/* Retain pages specified */
while (argc - fz_optind)
{
int page, spage, epage;
char *spec, *dash;
char *pagelist = argv[fz_optind];
spec = fz_strsep(&pagelist, ",");
while (spec)
{
dash = strchr(spec, '-');
if (dash == spec)
spage = epage = pdf_count_pages(xref);
else
spage = epage = atoi(spec);
if (dash)
{
if (strlen(dash) > 1)
epage = atoi(dash + 1);
else
epage = pdf_count_pages(xref);
}
if (spage > epage)
page = spage, spage = epage, epage = page;
if (spage < 1)
spage = 1;
if (epage > pdf_count_pages(xref))
epage = pdf_count_pages(xref);
for (page = spage; page <= epage; page++)
{
fz_obj *pageobj = xref->page_objs[page-1];
fz_obj *pageref = xref->page_refs[page-1];
fz_dict_puts(pageobj, "Parent", parent);
/* Store page object in new kids array */
fz_array_push(kids, pageref);
}
spec = fz_strsep(&pagelist, ",");
}
fz_optind++;
}
fz_drop_obj(parent);
/* Update page count and kids array */
countobj = fz_new_int(ctx, fz_array_len(kids));
fz_dict_puts(pages, "Count", countobj);
fz_drop_obj(countobj);
fz_dict_puts(pages, "Kids", kids);
fz_drop_obj(kids);
/* Also preserve the (partial) Dests name tree */
if (olddests)
{
int i;
fz_obj *names = fz_new_dict(ctx, 1);
fz_obj *dests = fz_new_dict(ctx, 1);
fz_obj *names_list = fz_new_array(ctx, 32);
for (i = 0; i < fz_dict_len(olddests); i++)
{
fz_obj *key = fz_dict_get_key(olddests, i);
fz_obj *val = fz_dict_get_val(olddests, i);
fz_obj *key_str = fz_new_string(ctx, fz_to_name(key), strlen(fz_to_name(key)));
fz_obj *dest = fz_dict_gets(val, "D");
dest = fz_array_get(dest ? dest : val, 0);
if (fz_array_contains(fz_dict_gets(pages, "Kids"), dest))
{
fz_array_push(names_list, key_str);
fz_array_push(names_list, val);
}
fz_drop_obj(key_str);
}
root = fz_dict_gets(xref->trailer, "Root");
fz_dict_puts(dests, "Names", names_list);
fz_dict_puts(names, "Dests", dests);
fz_dict_puts(root, "Names", names);
fz_drop_obj(names);
fz_drop_obj(dests);
fz_drop_obj(names_list);
fz_drop_obj(olddests);
}
}
void
pdf_insert_page(pdf_document *doc, pdf_page *page, int at)
{
fz_context *ctx = doc->ctx;
int count = pdf_count_pages(doc);
pdf_obj *parent, *kids;
pdf_obj *page_ref;
int i;
page_ref = pdf_new_ref(doc, page->me);
fz_try(ctx)
{
if (count == 0)
{
pdf_obj *root = pdf_dict_gets(pdf_trailer(doc), "Root");
parent = pdf_dict_gets(root, "Pages");
if (!parent)
fz_throw(doc->ctx, FZ_ERROR_GENERIC, "cannot find page tree");
kids = pdf_dict_gets(parent, "Kids");
if (!kids)
fz_throw(doc->ctx, FZ_ERROR_GENERIC, "malformed page tree");
pdf_array_insert(kids, page_ref, 0);
}
else if (at >= count)
{
if (at == INT_MAX)
at = count;
if (at > count)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot insert page beyond end of page tree");
/* append after last page */
pdf_lookup_page_loc(doc, count - 1, &parent, &i);
kids = pdf_dict_gets(parent, "Kids");
pdf_array_insert(kids, page_ref, i + 1);
}
else
{
/* insert before found page */
pdf_lookup_page_loc(doc, at, &parent, &i);
kids = pdf_dict_gets(parent, "Kids");
pdf_array_insert(kids, page_ref, i);
}
pdf_dict_puts(page->me, "Parent", parent);
/* Adjust page counts */
while (parent)
{
int count = pdf_to_int(pdf_dict_gets(parent, "Count"));
pdf_dict_puts_drop(parent, "Count", pdf_new_int(doc, count + 1));
parent = pdf_dict_gets(parent, "Parent");
}
}
fz_always(ctx)
{
pdf_drop_obj(page_ref);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
doc->page_count = 0; /* invalidate cached value */
}
static int wmupdf_pdfdoc_newpages(pdf_document *xref,fz_context *ctx,WPDFPAGEINFO *pageinfo,
int use_forms,FILE *out)
{
static char *funcname="wmupdf_pdfdoc_newpages";
pdf_obj *root,*oldroot,*pages,*kids,*countobj,*parent,*olddests;
pdf_obj *srcpageobj,*srcpagecontents;
pdf_obj *destpageobj,*destpagecontents,*destpageresources;
double srcx0,srcy0;
int qref,i,i0,pagecount,srccount,destpageref,nbb;
int *srcpageused;
char *bigbuf;
double srcpagerot;
/* Avoid compiler warning */
destpageref = 0;
destpageobj = NULL;
srcx0=srcy0=0.;
/* Keep only pages/type and (reduced) dest entries to avoid references to unretained pages */
pagecount = pdf_count_pages(xref);
if (use_forms)
{
willus_mem_alloc_warn((void **)&srcpageused,sizeof(int)*(pagecount+1),funcname,10);
/* Mark all source pages as "not done" */
for (i=0;i<=pagecount;i++)
srcpageused[i]=0;
nbb=4096;
willus_mem_alloc_warn((void **)&bigbuf,nbb,funcname,10);
bigbuf[0]='\0';
}
oldroot = pdf_dict_gets(xref->trailer,"Root");
/*
** pages points to /Pages object in PDF file.
** Has: /Type /Pages, /Count <numpages>, /Kids [ obj obj obj obj ]
*/
pages = pdf_dict_gets(oldroot,"Pages");
olddests = pdf_load_name_tree(xref,"Dests");
/*
** Create new root object with only /Pages and /Type (and reduced dest entries)
** to avoid references to unretained pages.
*/
root = pdf_new_dict(ctx,4);
pdf_dict_puts(root,"Type",pdf_dict_gets(oldroot,"Type"));
pdf_dict_puts(root,"Pages",pages);
pdf_update_object(xref,pdf_to_num(oldroot),root);
pdf_drop_obj(root);
/* Parent indirectly references the /Pages object in the file */
/* (Each new page we create has to point to this.) */
parent = pdf_new_indirect(ctx, pdf_to_num(pages), pdf_to_gen(pages), xref);
/* Create a new kids array with only the pages we want to keep */
kids = pdf_new_array(ctx, 1);
qref=0;
/* Avoid compiler warnings */
destpageresources=NULL;
destpagecontents=NULL;
srcpagecontents=NULL;
srcpagerot=0.;
for (i=0;i<=pageinfo->boxes.n;i++)
if (pageinfo->boxes.box[i].dstpage>0)
break;
if (i>0)
{
if (i<pageinfo->boxes.n)
memmove(&pageinfo->boxes.box[0],&pageinfo->boxes.box[i],sizeof(WPDFBOX)*pageinfo->boxes.n-i);
pageinfo->boxes.n -= i;
}
/* Walk through PFDBOXES array */
for (i=srccount=i0=0;i<=pageinfo->boxes.n;i++)
{
WPDFBOX *box;
int j,k,newsrc;
static char buf[512];
pdf_obj *s1indirect,*qindirect,*rotobj;
static double cpm[3][3],m[3][3],m1[3][3];
static double xclip[4],yclip[4];
/*
printf("box[%d]\n",i);
if (i<pageinfo->boxes.n)
{
box=&pageinfo->boxes.box[i];
printf(" srcpage=%d, dstpage=%d\n",box->srcbox.pageno,box->dstpage);
printf(" x0=%g, y0=%g\n",box->x0,box->y0);
printf(" w=%g, h=%g\n",box->w,box->h);
printf(" x1=%g, y1=%g\n",box->x1,box->y1);
printf(" sr=%g, dr=%g\n",box->srcrot_deg,box->dstrot_deg);
printf(" scale=%g\n",box->scale);
}
*/
/* Check to see if we are done with an output page */
if (srccount>0 && (i==pageinfo->boxes.n
|| (i>0 && pageinfo->boxes.box[i].dstpage!=pageinfo->boxes.box[i-1].dstpage)))
{
pdf_obj *newpageref;
/*
** Store destination page into document structure
*/
/*
printf(" ADDING NEW PAGE. (srccount=%d)\n",srccount);
*/
if (use_forms)
{
pdf_obj *dest_stream;
/* Create new object in document for destination page stream */
dest_stream = pdf_new_indirect(ctx,new_stream_object(xref,ctx,bigbuf),
0,(void *)xref);
/* Store this into the destination page contents array */
pdf_array_push(destpagecontents,dest_stream);
pdf_drop_obj(dest_stream);
}
newpageref=pdf_new_indirect(ctx,destpageref,0,(void *)xref);
/* Reference parent list of pages */
pdf_dict_puts(destpageobj,"Parent",parent);
pdf_dict_puts(destpageobj,"Contents",destpagecontents);
pdf_dict_puts(destpageobj,"Resources",destpageresources);
/* Store page object in document's kids array */
pdf_array_push(kids,newpageref);
/* Update document with new page */
pdf_update_object(xref,destpageref,destpageobj);
/* Clean up */
pdf_drop_obj(newpageref);
pdf_drop_obj(destpageresources);
pdf_drop_obj(destpagecontents);
pdf_drop_obj(destpageobj);
/* Reset source page and index to start of new destination page */
i0=i;
srccount=0;
}
/* Quit loop if beyond last box */
if (i>=pageinfo->boxes.n)
break;
box=&pageinfo->boxes.box[i];
if (box->srcbox.pageno<1 || box->srcbox.pageno>pagecount)
continue;
/* Is this a source page we haven't processed yet (for this destination page)? */
for (newsrc=1,j=i0;j<i;j++)
{
if (pageinfo->boxes.box[j].srcbox.pageno==box->srcbox.pageno)
{
newsrc=0;
break;
}
}
if (newsrc)
{
double v[4];
srccount++;
if (use_forms)
srcpageused[box->srcbox.pageno]=1;
/*
printf(" NEW SOURCE PAGE (srccount=%d)\n",srccount);
*/
if (srccount==1)
{
/*
** Start a new destination page.
**
** Each new page object is a dict type with:
** /Type /Page
** /Contents (array of objects)
** /Resources (dict)
** /MediaBox [0 0 612 792]
** /Parent <PagesObj>
** [Can have /Rotate 90, for example.]
**
*/
/*
printf(" (STARTING NEW DEST. PAGE)\n");
*/
destpageobj=start_new_destpage(ctx,box->dst_width_pts,box->dst_height_pts);
destpageresources=pdf_new_dict(ctx,1);
if (use_forms)
pdf_dict_puts(destpageresources,"XObject",pdf_new_dict(ctx,1));
destpageref=pdf_create_object(xref);
destpagecontents=pdf_new_array(ctx,1);
/* Init the destination page stream for forms */
if (use_forms)
bigbuf[0]='\0';
}
/* New source page, so get the source page objects */
srcpageobj = xref->page_objs[box->srcbox.pageno-1];
wmupdf_page_bbox(srcpageobj,v);
srcx0=v[0];
srcy0=v[1];
/*
printf("SRCX0=%g, SRCY0=%g\n",srcx0,srcy0);
*/
rotobj=pdf_dict_gets(srcpageobj,"Rotate");
srcpagerot = rotobj!=NULL ? pdf_to_real(rotobj) : 0.;
/*
printf("Page rotation = %g\n",srcpagerot);
*/
srcpagecontents=pdf_dict_gets(srcpageobj,"Contents");
/*
if (pdf_is_array(srcpagecontents))
{
int k;
printf(" source page contents = array.\n");
for (k=0;k<pdf_array_len(srcpagecontents);k++)
{
pdf_obj *obj;
obj=pdf_array_get(srcpagecontents,k);
if (pdf_is_indirect(obj))
{
printf(" contents[%d] = indirect (%d)\n",k,pdf_to_num(obj));
pdf_resolve_indirect(obj);
}
}
}
*/
if (use_forms)
{
pdf_obj *xobjdict;
int pageno;
xobjdict=pdf_dict_gets(destpageresources,"XObject");
pageno=box->srcbox.pageno;
pdf_dict_puts(xobjdict,xobject_name(pageno),xref->page_refs[pageno-1]);
pdf_dict_puts(destpageresources,"XObject",xobjdict);
}
else
{
pdf_obj *srcpageresources;
/* Merge source page resources into destination page resources */
srcpageresources=pdf_dict_gets(srcpageobj,"Resources");
/*
printf("box->dstpage=%d, srcpage=%d (ind.#=%d)\n",box->dstpage,box->srcbox.pageno,pdf_to_num(xref->page_refs[box->srcbox.pageno-1]));
*/
wmupdf_dict_merge(ctx,"Resources",destpageresources,srcpageresources);
}
}
/*
** Process this source box:
**
** Create a tranformation matrix and clipping path to only show the
** desired part of the source page at the appropriate place on the
** destination page.
**
** How the tranformation matrix works:
** - Translations shall be specified as [ 1 0 0 1 tx ty ], where tx and ty
** shall be the distances to translate the origin of the coordinate system
** in the horizontal and vertical dimensions, respectively.
**
** - Scaling shall be obtained by [ sx 0 0 sy 0 0 ]. This scales the coordinates
** so that 1 unit in the horizontal and vertical dimensions of the new coordinate
** system is the same size as sx and sy units, respectively, in the previous
** coordinate system.
**
** - Rotations shall be produced by [ cos q sin q -sin q cos q 0 0 ], which has the
** effect of rotating the coordinate system axes by an angle q counter-clockwise.
**
** - Skew shall be specified by [ 1 tan a tan b 1 0 0 ], which skews the x axis by
** an angle a and the y axis by an angle b.
**
*/
wpdfbox_determine_original_source_position(box);
/*
printf("Before unrotate.\n");
printf("box->srcrot=%g\n",box->srcrot_deg);
printf("box->x0=%g, box->y0=%g\n",box->x0,box->y0);
printf("box->w=%g, box->h=%g\n",box->w,box->h);
printf("box->pw=%g, box->ph=%g\n",box->src_width_pts,box->src_height_pts);
*/
if (fabs(srcpagerot) > 1.0e-4)
wpdfbox_unrotate(box,srcpagerot);
/*
printf("box->srcrot=%g\n",box->srcrot_deg);
printf("box->x0=%g, box->y0=%g\n",box->x0,box->y0);
printf("box->w=%g, box->h=%g\n",box->w,box->h);
printf("box->pw=%g, box->ph=%g\n",box->src_width_pts,box->src_height_pts);
*/
matrix_unity(m,1.);
/*
printf("xfmatrix = [ %9.6f %9.6f %9.6f ]\n"
" [ %9.6f %9.6f %9.6f ]\n"
" [ %9.6f %9.6f %9.6f ]\n",
m[0][0],m[0][1],m[0][2],
m[1][0],m[1][1],m[1][2],
m[2][0],m[2][1],m[2][2]);
*/
matrix_translate(m1,-box->x0-srcx0,-box->y0-srcy0);
matrix_mul(m,m1);
matrix_rotate(m1,-box->srcrot_deg+box->dstrot_deg);
matrix_mul(m,m1);
matrix_unity(m1,box->scale);
matrix_mul(m,m1);
matrix_translate(m1,box->x1,box->y1);
matrix_mul(m,m1);
matrix_zero_round(m);
matrix_rotate(cpm,box->srcrot_deg);
matrix_translate(m1,box->x0+srcx0,box->y0+srcy0);
matrix_mul(cpm,m1);
/*
printf("Clip matrix:\n");
printf("xfmatrix = [ %9.6f %9.6f %9.6f ]\n"
" [ %9.6f %9.6f %9.6f ]\n"
" [ %9.6f %9.6f %9.6f ]\n",
cpm[0][0],cpm[0][1],cpm[0][2],
cpm[1][0],cpm[1][1],cpm[1][2],
cpm[2][0],cpm[2][1],cpm[2][2]);
*/
set_clip_array(xclip,yclip,box->srcrot_deg,box->w,box->h);
for (k=0;k<4;k++)
matrix_xymul(cpm,&xclip[k],&yclip[k]);
/*
printf("Clip path:\n %7.2f %7.2f\n %7.2f,%7.2f\n %7.2f,%7.2f\n"
" %7.2f %7.2f\n %7.2f,%7.2f\n",
xclip[0],yclip[0],xclip[1],yclip[1],xclip[2],yclip[2],
xclip[3],yclip[3],xclip[0],yclip[0]);
*/
strcpy(buf,"q");
for (k=0;k<=2;k++)
{
cat_pdf_double(buf,m[k][0]);
cat_pdf_double(buf,m[k][1]);
}
strcat(buf," cm");
for (k=0;k<=4;k++)
{
cat_pdf_double(buf,xclip[k&3]);
cat_pdf_double(buf,yclip[k&3]);
strcat(buf,k==0 ? " m" : " l");
}
strcat(buf," W n");
if (use_forms)
{
/* FORM METHOD */
sprintf(&buf[strlen(buf)]," /%s Do Q\n",xobject_name(box->srcbox.pageno));
if (strlen(bigbuf)+strlen(buf) > nbb)
{
int newsize;
newsize=nbb*2;
willus_mem_realloc_robust_warn((void **)&bigbuf,newsize,nbb,funcname,10);
nbb=newsize;
}
strcat(bigbuf,buf);
}
else
{
/* NO-FORMS METHOD */
strcat(buf,"\n");
/* Create new objects in document for tx matrix and restore matrix */
s1indirect = pdf_new_indirect(ctx,new_stream_object(xref,ctx,buf),0,(void *)xref);
if (qref==0)
qref=new_stream_object(xref,ctx,"Q\n");
qindirect = pdf_new_indirect(ctx,qref,0,(void *)xref);
/* Store this region into the destination page contents array */
pdf_array_push(destpagecontents,s1indirect);
if (pdf_is_array(srcpagecontents))
{
int k;
for (k=0;k<pdf_array_len(srcpagecontents);k++)
pdf_array_push(destpagecontents,pdf_array_get(srcpagecontents,k));
}
else
pdf_array_push(destpagecontents,srcpagecontents);
pdf_array_push(destpagecontents,qindirect);
pdf_drop_obj(s1indirect);
pdf_drop_obj(qindirect);
}
}
pdf_drop_obj(parent);
/* For forms, convert all original source pages to XObject Forms */
if (use_forms)
wmupdf_convert_pages_to_forms(xref,ctx,srcpageused);
/* Update page count and kids array */
countobj = pdf_new_int(ctx, pdf_array_len(kids));
pdf_dict_puts(pages, "Count", countobj);
pdf_drop_obj(countobj);
pdf_dict_puts(pages, "Kids", kids);
pdf_drop_obj(kids);
/* Also preserve the (partial) Dests name tree */
if (olddests)
wmupdf_preserve_old_dests(olddests,ctx,xref,pages);
if (use_forms)
{
/* Free memory */
willus_mem_free((double **)&bigbuf,funcname);
willus_mem_free((double **)&srcpageused,funcname);
}
return(0);
}
static void retainpages(fz_context *ctx, globals *glo, int argc, char **argv)
{
pdf_obj *oldroot, *root, *pages, *kids, *countobj, *parent, *olddests;
pdf_document *doc = glo->doc;
int argidx = 0;
pdf_obj *names_list = NULL;
int pagecount;
int i;
/* Keep only pages/type and (reduced) dest entries to avoid
* references to unretained pages */
oldroot = pdf_dict_get(ctx, pdf_trailer(ctx, doc), PDF_NAME_Root);
pages = pdf_dict_get(ctx, oldroot, PDF_NAME_Pages);
olddests = pdf_load_name_tree(ctx, doc, PDF_NAME_Dests);
root = pdf_new_dict(ctx, doc, 2);
pdf_dict_put(ctx, root, PDF_NAME_Type, pdf_dict_get(ctx, oldroot, PDF_NAME_Type));
pdf_dict_put(ctx, root, PDF_NAME_Pages, pdf_dict_get(ctx, oldroot, PDF_NAME_Pages));
pdf_update_object(ctx, doc, pdf_to_num(ctx, oldroot), root);
pdf_drop_obj(ctx, root);
/* Create a new kids array with only the pages we want to keep */
parent = pdf_new_indirect(ctx, doc, pdf_to_num(ctx, pages), pdf_to_gen(ctx, pages));
kids = pdf_new_array(ctx, doc, 1);
/* Retain pages specified */
while (argc - argidx)
{
int page, spage, epage;
char *spec, *dash;
char *pagelist = argv[argidx];
pagecount = pdf_count_pages(ctx, doc);
spec = fz_strsep(&pagelist, ",");
while (spec)
{
dash = strchr(spec, '-');
if (dash == spec)
spage = epage = pagecount;
else
spage = epage = atoi(spec);
if (dash)
{
if (strlen(dash) > 1)
epage = atoi(dash + 1);
else
epage = pagecount;
}
spage = fz_clampi(spage, 1, pagecount);
epage = fz_clampi(epage, 1, pagecount);
if (spage < epage)
for (page = spage; page <= epage; ++page)
retainpage(ctx, doc, parent, kids, page);
else
for (page = spage; page >= epage; --page)
retainpage(ctx, doc, parent, kids, page);
spec = fz_strsep(&pagelist, ",");
}
argidx++;
}
pdf_drop_obj(ctx, parent);
/* Update page count and kids array */
countobj = pdf_new_int(ctx, doc, pdf_array_len(ctx, kids));
pdf_dict_put(ctx, pages, PDF_NAME_Count, countobj);
pdf_drop_obj(ctx, countobj);
pdf_dict_put(ctx, pages, PDF_NAME_Kids, kids);
pdf_drop_obj(ctx, kids);
/* Also preserve the (partial) Dests name tree */
if (olddests)
{
pdf_obj *names = pdf_new_dict(ctx, doc, 1);
pdf_obj *dests = pdf_new_dict(ctx, doc, 1);
int len = pdf_dict_len(ctx, olddests);
names_list = pdf_new_array(ctx, doc, 32);
for (i = 0; i < len; i++)
{
pdf_obj *key = pdf_dict_get_key(ctx, olddests, i);
pdf_obj *val = pdf_dict_get_val(ctx, olddests, i);
pdf_obj *dest = pdf_dict_get(ctx, val, PDF_NAME_D);
dest = pdf_array_get(ctx, dest ? dest : val, 0);
if (pdf_array_contains(ctx, pdf_dict_get(ctx, pages, PDF_NAME_Kids), dest))
{
pdf_obj *key_str = pdf_new_string(ctx, doc, pdf_to_name(ctx, key), strlen(pdf_to_name(ctx, key)));
pdf_array_push(ctx, names_list, key_str);
pdf_array_push(ctx, names_list, val);
pdf_drop_obj(ctx, key_str);
}
}
root = pdf_dict_get(ctx, pdf_trailer(ctx, doc), PDF_NAME_Root);
pdf_dict_put(ctx, dests, PDF_NAME_Names, names_list);
pdf_dict_put(ctx, names, PDF_NAME_Dests, dests);
pdf_dict_put(ctx, root, PDF_NAME_Names, names);
pdf_drop_obj(ctx, names);
pdf_drop_obj(ctx, dests);
pdf_drop_obj(ctx, names_list);
pdf_drop_obj(ctx, olddests);
}
/* Force the next call to pdf_count_pages to recount */
glo->doc->page_count = 0;
/* Edit each pages /Annot list to remove any links that point to
* nowhere. */
pagecount = pdf_count_pages(ctx, doc);
for (i = 0; i < pagecount; i++)
{
pdf_obj *pageref = pdf_lookup_page_obj(ctx, doc, i);
pdf_obj *pageobj = pdf_resolve_indirect(ctx, pageref);
pdf_obj *annots = pdf_dict_get(ctx, pageobj, PDF_NAME_Annots);
int len = pdf_array_len(ctx, annots);
int j;
for (j = 0; j < len; j++)
{
pdf_obj *o = pdf_array_get(ctx, annots, j);
pdf_obj *p;
if (!pdf_name_eq(ctx, pdf_dict_get(ctx, o, PDF_NAME_Subtype), PDF_NAME_Link))
continue;
p = pdf_dict_get(ctx, o, PDF_NAME_A);
if (!pdf_name_eq(ctx, pdf_dict_get(ctx, p, PDF_NAME_S), PDF_NAME_GoTo))
continue;
if (string_in_names_list(ctx, pdf_dict_get(ctx, p, PDF_NAME_D), names_list))
continue;
/* FIXME: Should probably look at Next too */
/* Remove this annotation */
pdf_array_delete(ctx, annots, j);
j--;
}
}
}
void pdfapp_open(pdfapp_t *app, char *filename)
{
#if 0
fz_error error;
fz_obj *obj;
char *password = "";
#else
fz_error error;
fz_stream *file;
char *password = "";
fz_obj *obj;
fz_obj *info;
int fd;
fd = open(filename, O_BINARY | O_RDONLY, 0666);
if (fd < 0)
fprintf(stderr, "error, file %s does not exist\n", filename);
#endif
/*
* Open PDF and load xref table
*/
app->filename = filename;
#if 0
app->xref = pdf_newxref();
error = pdf_loadxref(app->xref, filename);
if (error)
{
fz_catch(error, "trying to air");
error = pdf_repairxref(app->xref, filename);
if (error)
pdfapp_error(app, error);
}
error = pdf_decryptxref(app->xref);
if (error)
pdfapp_error(app, error);
#else
file = fz_open_fd(fd);
error = pdf_open_xref_with_stream(&app->xref, file, NULL);
if (error)
pdfapp_error(app, fz_rethrow(error, "cannot open document '%s'", filename));
fz_close(file);
#endif
/*
* Handle encrypted PDF files
*/
if (pdf_needs_password(app->xref))
{
int okay = pdf_authenticate_password(app->xref, password);
while (!okay)
{
//password = winpassword(app, filename);
if (!password)
exit(1);
okay = pdf_authenticate_password(app->xref, password);
if (!okay)
pdfapp_warn(app, "Invalid password.");
}
}
/*
* Load meta information
* TODO: move this into mupdf library
*/
#if 0
obj = fz_dictgets(app->xref->trailer, "Root");
app->xref->root = fz_resolveindirect(obj);
if (!app->xref->root)
pdfapp_error(app, fz_throw("syntaxerror: missing Root object"));
fz_keepobj(app->xref->root);
obj = fz_dictgets(app->xref->trailer, "Info");
app->xref->info = fz_resolveindirect(obj);
if (!app->xref->info)
pdfapp_warn(app, "Could not load PDF meta information.");
if (app->xref->info)
fz_keepobj(app->xref->info);
/*app->outline = pdf_loadoutline(app->xref);*/
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)
{
app->doctitle = pdf_toutf8(obj);
}
}
#else
app->outline = pdf_load_outline(app->xref);
app->doctitle = filename;
if (strrchr(app->doctitle, '\\'))
app->doctitle = strrchr(app->doctitle, '\\') + 1;
if (strrchr(app->doctitle, '/'))
app->doctitle = strrchr(app->doctitle, '/') + 1;
info = fz_dict_gets(app->xref->trailer, "Info");
if (info)
{
obj = fz_dict_gets(info, "Title");
if (obj)
app->doctitle = pdf_to_utf8(obj);
}
#endif
/*
* Start at first page
*/
#if 0
app->pagecount = pdf_getpagecount(app->xref);
#else
error = pdf_load_page_tree(app->xref);
if (error)
pdfapp_error(app, fz_rethrow(error, "cannot load page tree"));
app->pagecount = pdf_count_pages(app->xref);
#endif
app->rotate = 0;
}
static void decimatepages(fz_context *ctx, pdf_document *doc)
{
pdf_obj *oldroot, *root, *pages, *kids, *parent;
int num_pages = pdf_count_pages(ctx, doc);
int page, kidcount;
oldroot = pdf_dict_get(ctx, pdf_trailer(ctx, doc), PDF_NAME_Root);
pages = pdf_dict_get(ctx, oldroot, PDF_NAME_Pages);
root = pdf_new_dict(ctx, doc, 2);
pdf_dict_put(ctx, root, PDF_NAME_Type, pdf_dict_get(ctx, oldroot, PDF_NAME_Type));
pdf_dict_put(ctx, root, PDF_NAME_Pages, pdf_dict_get(ctx, oldroot, PDF_NAME_Pages));
pdf_update_object(ctx, doc, pdf_to_num(ctx, oldroot), root);
pdf_drop_obj(ctx, root);
/* Create a new kids array with our new pages in */
parent = pdf_new_indirect(ctx, doc, pdf_to_num(ctx, pages), pdf_to_gen(ctx, pages));
kids = pdf_new_array(ctx, doc, 1);
kidcount = 0;
for (page=0; page < num_pages; page++)
{
pdf_page *page_details = pdf_load_page(ctx, doc, page);
int xf = x_factor, yf = y_factor;
int x, y;
float w = page_details->mediabox.x1 - page_details->mediabox.x0;
float h = page_details->mediabox.y1 - page_details->mediabox.y0;
if (xf == 0 && yf == 0)
{
/* Nothing specified, so split along the long edge */
if (w > h)
xf = 2, yf = 1;
else
xf = 1, yf = 2;
}
else if (xf == 0)
xf = 1;
else if (yf == 0)
yf = 1;
for (y = yf-1; y >= 0; y--)
{
for (x = 0; x < xf; x++)
{
pdf_obj *newpageobj, *newpageref, *newmediabox;
fz_rect mb;
int num;
newpageobj = pdf_copy_dict(ctx, pdf_lookup_page_obj(ctx, doc, page));
num = pdf_create_object(ctx, doc);
pdf_update_object(ctx, doc, num, newpageobj);
newpageref = pdf_new_indirect(ctx, doc, num, 0);
newmediabox = pdf_new_array(ctx, doc, 4);
mb.x0 = page_details->mediabox.x0 + (w/xf)*x;
if (x == xf-1)
mb.x1 = page_details->mediabox.x1;
else
mb.x1 = page_details->mediabox.x0 + (w/xf)*(x+1);
mb.y0 = page_details->mediabox.y0 + (h/yf)*y;
if (y == yf-1)
mb.y1 = page_details->mediabox.y1;
else
mb.y1 = page_details->mediabox.y0 + (h/yf)*(y+1);
pdf_array_push(ctx, newmediabox, pdf_new_real(ctx, doc, mb.x0));
pdf_array_push(ctx, newmediabox, pdf_new_real(ctx, doc, mb.y0));
pdf_array_push(ctx, newmediabox, pdf_new_real(ctx, doc, mb.x1));
pdf_array_push(ctx, newmediabox, pdf_new_real(ctx, doc, mb.y1));
pdf_dict_put(ctx, newpageobj, PDF_NAME_Parent, parent);
pdf_dict_put(ctx, newpageobj, PDF_NAME_MediaBox, newmediabox);
/* Store page object in new kids array */
pdf_array_push(ctx, kids, newpageref);
kidcount++;
}
}
}
pdf_drop_obj(ctx, parent);
/* Update page count and kids array */
pdf_dict_put(ctx, pages, PDF_NAME_Count, pdf_new_int(ctx, doc, kidcount));
pdf_dict_put(ctx, pages, PDF_NAME_Kids, kids);
pdf_drop_obj(ctx, kids);
}
static void decimatepages(pdf_document *xref)
{
pdf_obj *oldroot, *root, *pages, *kids, *parent;
fz_context *ctx = xref->ctx;
int num_pages = pdf_count_pages(xref);
int page, kidcount;
/* Keep only pages/type and (reduced) dest entries to avoid
* references to unretained pages */
oldroot = pdf_dict_gets(pdf_trailer(xref), "Root");
pages = pdf_dict_gets(oldroot, "Pages");
root = pdf_new_dict(ctx, 2);
pdf_dict_puts(root, "Type", pdf_dict_gets(oldroot, "Type"));
pdf_dict_puts(root, "Pages", pdf_dict_gets(oldroot, "Pages"));
pdf_update_object(xref, pdf_to_num(oldroot), root);
pdf_drop_obj(root);
/* Create a new kids array with only the pages we want to keep */
parent = pdf_new_indirect(ctx, pdf_to_num(pages), pdf_to_gen(pages), xref);
kids = pdf_new_array(ctx, 1);
kidcount = 0;
for (page=0; page < num_pages; page++)
{
pdf_page *page_details = pdf_load_page(xref, page);
int xf = x_factor, yf = y_factor;
int x, y;
float w = page_details->mediabox.x1 - page_details->mediabox.x0;
float h = page_details->mediabox.y1 - page_details->mediabox.y0;
if (xf == 0 && yf == 0)
{
/* Nothing specified, so split along the long edge */
if (w > h)
xf = 2, yf = 1;
else
xf = 1, yf = 2;
}
else if (xf == 0)
xf = 1;
else if (yf == 0)
yf = 1;
for (y = yf-1; y >= 0; y--)
{
for (x = 0; x < xf; x++)
{
pdf_obj *newpageobj, *newpageref, *newmediabox;
fz_rect mb;
int num;
newpageobj = pdf_copy_dict(ctx, xref->page_objs[page]);
num = pdf_create_object(xref);
pdf_update_object(xref, num, newpageobj);
newpageref = pdf_new_indirect(ctx, num, 0, xref);
newmediabox = pdf_new_array(ctx, 4);
mb.x0 = page_details->mediabox.x0 + (w/xf)*x;
if (x == xf-1)
mb.x1 = page_details->mediabox.x1;
else
mb.x1 = page_details->mediabox.x0 + (w/xf)*(x+1);
mb.y0 = page_details->mediabox.y0 + (h/yf)*y;
if (y == yf-1)
mb.y1 = page_details->mediabox.y1;
else
mb.y1 = page_details->mediabox.y0 + (h/yf)*(y+1);
pdf_array_push(newmediabox, pdf_new_real(ctx, mb.x0));
pdf_array_push(newmediabox, pdf_new_real(ctx, mb.y0));
pdf_array_push(newmediabox, pdf_new_real(ctx, mb.x1));
pdf_array_push(newmediabox, pdf_new_real(ctx, mb.y1));
pdf_dict_puts(newpageobj, "Parent", parent);
pdf_dict_puts(newpageobj, "MediaBox", newmediabox);
/* Store page object in new kids array */
pdf_array_push(kids, newpageref);
kidcount++;
}
}
}
pdf_drop_obj(parent);
/* Update page count and kids array */
pdf_dict_puts(pages, "Count", pdf_new_int(ctx, kidcount));
pdf_dict_puts(pages, "Kids", kids);
pdf_drop_obj(kids);
}
int Document::GetNumPages () const
{
return pdf_count_pages (MuDoc_);
}
static int _pdf_doc_load(struct _pdf_doc *self, mume_stream_t *stm)
{
fz_error error;
fz_stream *fzstm;
fz_rect *mbox;
fz_obj *page_obj, *box_obj;
int i, c;
_pdf_doc_clear(self);
fzstm = fz_new_stream(stm, _pdf_stream_read, _pdf_stream_close);
mume_stream_reference(stm);
fzstm->seek = _pdf_stream_seek;
error = pdf_open_xref_with_stream(&self->xref, fzstm, NULL);
fz_close(fzstm);
if (error) {
mume_error(("Read xref failed\n", error));
return 0;
}
assert(!pdf_needs_password(self->xref));
/* Load meta information. */
error = pdf_load_page_tree(self->xref);
if (error) {
mume_error(("Cannot load page tree\n"));
return 0;
}
c = pdf_count_pages(self->xref);
self->glyph_cache = fz_new_glyph_cache();
self->pages = calloc_abort(c, sizeof(pdf_page*));
self->disps = calloc_abort(c, sizeof(fz_display_list*));
self->media_boxes = malloc_abort(c * sizeof(fz_rect));
self->page_rotates = malloc_abort(c * sizeof(int));
/* Extract each pages' media box and rotation. */
for (i = 0; i < c; ++i) {
mbox = self->media_boxes + i;
page_obj = self->xref->page_objs[i];
if (!page_obj) {
*mbox = fz_empty_rect;
continue;
}
box_obj = fz_dict_gets(page_obj, "MediaBox");
*mbox = pdf_to_rect(box_obj);
if (fz_is_empty_rect(*mbox)) {
fz_warn("Cannot find page bounds, guessing page bounds.");
mbox->x1 = 612;
mbox->y1 = 792;
}
box_obj = fz_dict_gets(page_obj, "CropBox");
if (fz_is_array(box_obj))
*mbox = fz_intersect_rect(*mbox, pdf_to_rect(box_obj));
self->page_rotates[i] = fz_to_int(
fz_dict_gets(page_obj, "Rotate"));
if (self->page_rotates[i] % 90)
self->page_rotates[i] = 0;
}
return 1;
}
int PDFDocument::GetNumPages() {
return pdf_count_pages(_fz_context, _pdf_document);
}
int PDFDocument::GetPageCount() {
return pdf_count_pages(_pdf_document);
}
char *
pdf_parse_link_action(fz_context *ctx, pdf_document *doc, pdf_obj *action, int pagenum)
{
pdf_obj *obj, *dest, *file_spec;
if (!action)
return NULL;
obj = pdf_dict_get(ctx, action, PDF_NAME_S);
if (pdf_name_eq(ctx, PDF_NAME_GoTo, obj))
{
dest = pdf_dict_get(ctx, action, PDF_NAME_D);
return pdf_parse_link_dest(ctx, doc, dest);
}
else if (pdf_name_eq(ctx, PDF_NAME_URI, obj))
{
/* URI entries are ASCII strings */
const char *uri = pdf_to_str_buf(ctx, pdf_dict_get(ctx, action, PDF_NAME_URI));
if (!fz_is_external_link(ctx, uri))
{
pdf_obj *uri_base_obj = pdf_dict_getp(ctx, pdf_trailer(ctx, doc), "Root/URI/Base");
const char *uri_base = uri_base_obj ? pdf_to_str_buf(ctx, uri_base_obj) : "file://";
char *new_uri = fz_malloc(ctx, strlen(uri_base) + strlen(uri) + 1);
strcpy(new_uri, uri_base);
strcat(new_uri, uri);
return new_uri;
}
return fz_strdup(ctx, uri);
}
else if (pdf_name_eq(ctx, PDF_NAME_Launch, obj))
{
file_spec = pdf_dict_get(ctx, action, PDF_NAME_F);
return pdf_parse_file_spec(ctx, doc, file_spec, NULL);
}
else if (pdf_name_eq(ctx, PDF_NAME_GoToR, obj))
{
dest = pdf_dict_get(ctx, action, PDF_NAME_D);
file_spec = pdf_dict_get(ctx, action, PDF_NAME_F);
return pdf_parse_file_spec(ctx, doc, file_spec, dest);
}
else if (pdf_name_eq(ctx, PDF_NAME_Named, obj))
{
dest = pdf_dict_get(ctx, action, PDF_NAME_N);
if (pdf_name_eq(ctx, PDF_NAME_FirstPage, dest))
pagenum = 0;
else if (pdf_name_eq(ctx, PDF_NAME_LastPage, dest))
pagenum = pdf_count_pages(ctx, doc) - 1;
else if (pdf_name_eq(ctx, PDF_NAME_PrevPage, dest) && pagenum >= 0)
{
if (pagenum > 0)
pagenum--;
}
else if (pdf_name_eq(ctx, PDF_NAME_NextPage, dest) && pagenum >= 0)
{
if (pagenum < pdf_count_pages(ctx, doc) - 1)
pagenum++;
}
else
return NULL;
return fz_asprintf(ctx, "#%d", pagenum + 1);
}
return NULL;
}
static void pdfapp_open_pdf(pdfapp_t *app, char *filename, int fd)
{
fz_error error;
fz_stream *file;
char *password = "";
fz_obj *obj;
fz_obj *info;
/*
* Open PDF and load xref table
*/
file = fz_open_fd(fd);
error = pdf_open_xref_with_stream(&app->xref, file, NULL);
if (error)
pdfapp_error(app, fz_rethrow(error, "cannot open document '%s'", filename));
fz_close(file);
/*
* Handle encrypted PDF files
*/
if (pdf_needs_password(app->xref))
{
int okay = pdf_authenticate_password(app->xref, password);
while (!okay)
{
password = winpassword(app, filename);
if (!password)
exit(1);
okay = pdf_authenticate_password(app->xref, password);
if (!okay)
pdfapp_warn(app, "Invalid password.");
}
}
/*
* Load meta information
*/
app->outline = pdf_load_outline(app->xref);
app->doctitle = filename;
if (strrchr(app->doctitle, '\\'))
app->doctitle = strrchr(app->doctitle, '\\') + 1;
if (strrchr(app->doctitle, '/'))
app->doctitle = strrchr(app->doctitle, '/') + 1;
info = fz_dict_gets(app->xref->trailer, "Info");
if (info)
{
obj = fz_dict_gets(info, "Title");
if (obj)
app->doctitle = pdf_to_utf8(obj);
}
/*
* Start at first page
*/
error = pdf_load_page_tree(app->xref);
if (error)
pdfapp_error(app, fz_rethrow(error, "cannot load page tree"));
app->pagecount = pdf_count_pages(app->xref);
}
int Pdf::numPages() const
{
return pdf_count_pages(xref);
}
