PDFlib Text Extraction Toolkit (TET) Manual

C++
C
int open_document_callback(void *opaque, size_t filesize,
size_t (*readproc)(void *opaque, void *buffer, size_t size),
int (*seekproc)(void *opaque, long offset),
string optlist)
int TET_open_document_callback(TET *tet, void *opaque, size_t filesize,
size_t (*readproc)(void *opaque, void *buffer, size_t size),
int (*seekproc)(void *opaque, long offset),
const char *optlist)
Open a PDF document from a custom data source for content extraction.
opaque A pointer to some user data that might be associated with the input PDF document.
This pointer will be passed as the first parameter of the callback functions, and
can be used in any way. TET will not use the opaque pointer in any other way.
filesize
The size of the complete PDF document in bytes.
readproc A C callback function which copies size bytes to the memory pointed to by
buffer. If the end of the document is reached it may copy less data than requested. The
function must return the number of bytes copied.
seekproc A C callback function which sets the current read position in the document.
offset denotes the position from the beginning of the document (0 meaning the first
byte). If successful, this function must return 0, otherwise -1.
optlist An option list specifying document options according to Table 10.3.
Returns See TET_open_document( ).
Details See TET_open_document( ).
Bindings
This function is only available in the C and C++ language bindings.
C++ void close_document(int doc)
C# Java void close_document(int doc)
Perl PHP TET_close_document(resource tet, long doc)
VB Sub close_document(doc As Long)
C void TET_close_document(TET *tet, int doc)
Release a document handle and all internal resources related to that document.
doc A valid document handle obtained with TET_open_document*( ).
Details
Closing a document automatically closes all of its open pages. All open documents and
pages will be closed automatically when TET_delete( ) is called. It is good programming
practice, however, to close documents explicitly when they are no longer needed.
Closed document handles must no longer be used in any function call.
10.4 Document Functions 133