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Update helper-select.i #4819

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79 changes: 61 additions & 18 deletions src_classic/helper-select.i
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Original file line number Diff line number Diff line change
Expand Up @@ -9,55 +9,98 @@
# maintained and developed by Artifex Software, Inc. https://artifex.com.
# ------------------------------------------------------------------------
*/


void remove_dest_range(fz_context *ctx, pdf_document *pdf, PyObject *numbers)
{
fz_try(ctx) {
int i, j, pno, len, pagecount = pdf_count_pages(ctx, pdf);
int i, j, pno, len;
int pagecount = pdf_count_pages(ctx, pdf);
PyObject *n1 = NULL;
pdf_obj *target, *annots, *pageref, *o, *action, *dest;

for (i = 0; i < pagecount; i++) {
n1 = PyLong_FromLong((long) i);
if (PySet_Contains(numbers, n1)) {

/* Create page index Python int */
n1 = PyLong_FromLong(i);
if (!n1) {
fz_throw(ctx, FZ_ERROR_GENERIC, "Out of memory in PyLong_FromLong");
}

int contains = PySet_Contains(numbers, n1);
if (contains == -1) {
Py_DECREF(n1);
fz_throw(ctx, FZ_ERROR_GENERIC, "PySet_Contains failed");
}

if (contains) {
Py_DECREF(n1);
continue;
}
Py_DECREF(n1);

pageref = pdf_lookup_page_obj(ctx, pdf, i);
annots = pdf_dict_get(ctx, pageref, PDF_NAME(Annots));
if (!annots) continue;
if (!annots) {
continue;
}

len = pdf_array_len(ctx, annots);
for (j = len - 1; j >= 0; j -= 1) {

/* Iterate backwards to safely delete array entries */
for (j = len - 1; j >= 0; j--) {

o = pdf_array_get(ctx, annots, j);
if (!pdf_name_eq(ctx, pdf_dict_get(ctx, o, PDF_NAME(Subtype)), PDF_NAME(Link))) {

if (!pdf_name_eq(ctx,
pdf_dict_get(ctx, o, PDF_NAME(Subtype)),
PDF_NAME(Link))) {
continue;
}

action = pdf_dict_get(ctx, o, PDF_NAME(A));
dest = pdf_dict_get(ctx, o, PDF_NAME(Dest));
dest = pdf_dict_get(ctx, o, PDF_NAME(Dest));

if (action) {
if (!pdf_name_eq(ctx, pdf_dict_get(ctx, action,
PDF_NAME(S)), PDF_NAME(GoTo)))
if (!pdf_name_eq(ctx,
pdf_dict_get(ctx, action, PDF_NAME(S)),
PDF_NAME(GoTo))) {
continue;
}
dest = pdf_dict_get(ctx, action, PDF_NAME(D));
}

pno = -1;
if (pdf_is_array(ctx, dest)) {
target = pdf_array_get(ctx, dest, 0);
pno = pdf_lookup_page_number(ctx, pdf, target);

} else if (pdf_is_string(ctx, dest)) {
fz_location loc = fz_resolve_link(ctx, &pdf->super,
pdf_to_text_string(ctx, dest),
NULL, NULL);
pno = loc.page;
}
else if (pdf_is_string(ctx, dest)) {
fz_location location = fz_resolve_link(ctx, &pdf->super,
pdf_to_text_string(ctx, dest),
NULL, NULL);
pno = location.page;

if (pno < 0) {
continue; /* could not resolve link target */
}
if (pno < 0) { // page number lookup did not work
continue;

n1 = PyLong_FromLong(pno);
if (!n1) {
fz_throw(ctx, FZ_ERROR_GENERIC, "Out of memory in PyLong_FromLong");
}

contains = PySet_Contains(numbers, n1);
if (contains == -1) {
Py_DECREF(n1);
fz_throw(ctx, FZ_ERROR_GENERIC, "PySet_Contains failed");
}
n1 = PyLong_FromLong((long) pno);
if (PySet_Contains(numbers, n1)) {

if (contains) {
pdf_array_delete(ctx, annots, j);
}

Py_DECREF(n1);
}
}
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