How to Create a Table of Contents Based on Bookmark Information in PDFs

This article contains sample code that enables you to create a table of contents based on bookmark Information in PDFs. We use Foxit PDF SDK to do it and you can get a free 30 day trial here. Platform: Windows, Mac, Linux Programming Language: C++, Java, C#, Objective-C, C License Key requirement: Standard

C++

void AddTOCToPDF(PDFDoc doc) {
//Set the table of contents configuration.
Int32Array intarray;
int depth = doc.GetBookmarkLevelDepth();
if (depth > 0) {
for (int i = 1; i <= depth; i++) {
intarray.Add(i);
}
}
WString title = L"";
TableOfContentsConfig toc_config = TableOfContentsConfig(title, intarray, true, false);

//Add the table of contents
doc.AddTableOfContents(toc_config);
}

Standard Java:

static void AddTOCToPDF(PDFDoc doc) throws PDFException {
Int32Array intarray = new Int32Array();
int depth = doc.getBookmarkLevelDepth();
if (depth > 0) {
for (int i = 1; i <= depth; i++) {
intarray.add(i);
}
}
String title = "";
TableOfContentsConfig toc_config = new TableOfContentsConfig(title, intarray, true, false);

//Add the table of contents
doc.addTableOfContents(toc_config);
}

C#:

static void AddTOCToPDF(PDFDoc doc)
{
//Set the table of contents configuration.
using (var intarray = new Int32Array())
{
int depth = doc.GetBookmarkLevelDepth();
if (depth > 0)
{
for (int i = 1; i <= depth; i++)
{
intarray.Add(i);
}
}
string title = "";
using (var toc_config = new TableOfContentsConfig(title, intarray, true, false))
{
//Add the table of contents
doc.AddTableOfContents(toc_config);
}
}

}

Objective-C:

void addTOCToPDF(FSPDFDoc* doc) {
@autoreleasepool {
//Set the table of contents configuration.
FSInt32Array* intarray = [[FSInt32Array alloc] init];
int depth = [doc getBookmarkLevelDepth];
if (depth > 0) {
for (int i = 1; i <= depth; i++) {
[intarray add:i];
}
}
NSString* title = @"";
FSTableOfContentsConfig* toc_config = [[FSTableOfContentsConfig alloc] initWithTitle:title bookmark_level_array:intarray is_show_serial_number:true include_toc_pages:false];

//Add the table of contents
[doc addTableOfContentsWithTableOfContentsConfig:toc_config];
}
}

C:

void AddTOCToPDF(FS_PDFDOC_HANDLE &doc) {
//Set the table of contents configuration.
int depth = 0;
FSDK_PDFDoc_GetBookmarkLevelDepth(doc, depth);
int* intarray = (int*)malloc(depth * sizeof(int));
if (depth > 0) {
for (int i = 1; i <= depth; i++) {
intarray[i - 1] = i;
}
}
FS_WSTR title;
title.str = L"";
title.len = 0;
FSTableOfContentsConfig toc_config;
toc_config.bookmark_level_array = intarray;
toc_config.bookmark_level_array_length = depth;
toc_config.title = title;
toc_config.is_show_serial_number = true;
toc_config.include_toc_pages = false;

//Add the table of contents
FSDK_PDFDoc_AddTableOfContents0(doc, toc_config);
free(intarray);
}