/* Find the point in a field hierarchy where all descendents
* share the same name */
static pdf_obj *find_head_of_field_group(pdf_obj *obj)
{
if (obj == NULL || pdf_dict_gets(obj, "T"))
return obj;
else
return find_head_of_field_group(pdf_dict_gets(obj, "Parent"));
}
static void update_field_value(pdf_document *doc, pdf_obj *obj, char *text)
{
fz_context *ctx = doc->ctx;
pdf_obj *sobj = NULL;
pdf_obj *grp;
if (!text)
text = "";
/* All fields of the same name should be updated, so
* set the value at the head of the group */
grp = find_head_of_field_group(obj);
if (grp)
obj = grp;
fz_var(sobj);
fz_try(ctx)
{
sobj = pdf_new_string(doc, text, strlen(text));
pdf_dict_puts(obj, "V", sobj);
}
fz_always(ctx)
{
pdf_drop_obj(sobj);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
pdf_field_mark_dirty(doc, obj);
}
/* Find the point in a field hierarchy where all descendents
* share the same name */
static pdf_obj *find_head_of_field_group(fz_context *ctx, pdf_obj *obj)
{
if (obj == NULL || pdf_dict_get(ctx, obj, PDF_NAME_T))
return obj;
else
return find_head_of_field_group(ctx, pdf_dict_get(ctx, obj, PDF_NAME_Parent));
}
