Struct DocumentModifier 

pub struct DocumentModifier { /* private fields */ }

Modifier for existing PDF documents. Loads all objects from a PdfDocument, allows modification, then saves.

Implementations

impl DocumentModifier

pub fn from_document(doc: &PdfDocument) -> Result<Self>

Create a modifier from an existing PdfDocument. Copies all objects from the document into the writer.

pub fn writer(&mut self) -> &mut PdfWriter

Get a reference to the internal writer for low-level modifications.

pub fn catalog_ref(&self) -> &IndirectRef

Get the catalog reference.

pub fn set_object(&mut self, obj_num: u32, obj: PdfObject)

Replace an object at a given object number.

pub fn add_object(&mut self, obj: PdfObject) -> IndirectRef

Add a new object and return its reference.

pub fn find_object_pub(&self, obj_num: u32) -> Option<&PdfObject>

Find an object by object number (public accessor).

pub fn delete_page(&mut self, page_index: usize) -> Result<()>

Delete a page by index (0-based). Modifies the Pages tree to remove the page reference.

pub fn insert_page( &mut self, page_index: usize, page: PageBuilder, ) -> Result<()>

Insert a new page at the given index.

pub fn reorder_pages(&mut self, order: &[usize]) -> Result<()>

Reorder pages. order is a list of 0-based page indices in the desired order.

pub fn set_info(&mut self, key: &[u8], value: &str)

Set or update a metadata field in the Info dictionary.

pub fn garbage_collect(&mut self)

Perform garbage collection: remove unreachable objects.

Traverses all objects reachable from the catalog (and info dict), then removes any objects that are not reachable.

pub fn build(self) -> Result<Vec<u8>>

Serialize to PDF bytes.

pub fn build_with_xref_stream( self, compressed: &[CompressedObjInfo], ) -> Result<Vec<u8>>

Serialize to PDF bytes using xref streams (PDF 1.5+). compressed contains info about objects packed into object streams.

pub fn save(self, path: &Path) -> Result<()>

Save to file.