Module xmlsave from libxml2

# ## Module xmlsave from libxml2

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API to save document or subtree of document ## Table of Contents
    Structure xmlSaveCtxt
    struct _xmlSaveCtxt
    The content of this structure is not made public by the API.
    Typedef xmlSaveCtxt * xmlSaveCtxtPtr
    int	xmlSaveClose			(xmlSaveCtxtPtr ctxt)
    long	xmlSaveDoc			(xmlSaveCtxtPtr ctxt,
    					 xmlDocPtr doc)
    int	xmlSaveFlush			(xmlSaveCtxtPtr ctxt)
    xmlSaveCtxtPtr	xmlSaveToBuffer		(xmlBufferPtr buffer,
    					 const char * encoding,
    					 int options)
    xmlSaveCtxtPtr	xmlSaveToFd		(int fd,
    					 const char * encoding,
    					 int options)
    xmlSaveCtxtPtr	xmlSaveToFilename	(const char * filename,
    					 const char * encoding,
    					 int options)
    xmlSaveCtxtPtr	xmlSaveToIO		(xmlOutputWriteCallback iowrite,
    					 xmlOutputCloseCallback ioclose,
    					 void * ioctx,
    					 const char * encoding,
    					 int options)
    long	xmlSaveTree			(xmlSaveCtxtPtr ctxt,
    					 xmlNodePtr node)
## Description ### Structure xmlSaveCtxt
    Structure xmlSaveCtxt
    struct _xmlSaveCtxt {
    The content of this structure is not made public by the API.
    }
### Function: xmlSaveClose
    int	xmlSaveClose			(xmlSaveCtxtPtr ctxt)
Close a document saving context, i.e. make sure that all bytes have been output and free the associated data.
`ctxt`: | a document saving context
`Returns`: | the number of byte written or -1 in case of error.
### Function: xmlSaveDoc
    long	xmlSaveDoc			(xmlSaveCtxtPtr ctxt,
    					 xmlDocPtr doc)
Save a full document to a saving context TODO: The function is not fully implemented yet as it does not return the byte count but 0 instead
`ctxt`: | a document saving context
`doc`: | a document
`Returns`: | the number of byte written or -1 in case of error
### Function: xmlSaveFlush
    int	xmlSaveFlush			(xmlSaveCtxtPtr ctxt)
Flush a document saving context, i.e. make sure that all bytes have been output.
`ctxt`: | a document saving context
`Returns`: | the number of byte written or -1 in case of error.
### Function: xmlSaveToBuffer
    xmlSaveCtxtPtr	xmlSaveToBuffer		(xmlBufferPtr buffer,
    					 const char * encoding,
    					 int options)
Create a document saving context serializing to a buffer with the encoding and the options given
`buffer`: | a buffer
`encoding`: | the encoding name to use or NULL
`options`: | a set of xmlSaveOptions
`Returns`: | a new serialization context or NULL in case of error.
### Function: xmlSaveToFd
    xmlSaveCtxtPtr	xmlSaveToFd		(int fd,
    					 const char * encoding,
    					 int options)
Create a document saving context serializing to a file descriptor with the encoding and the options given.
`fd`: | a file descriptor number
`encoding`: | the encoding name to use or NULL
`options`: | a set of xmlSaveOptions
`Returns`: | a new serialization context or NULL in case of error.
### Function: xmlSaveToFilename
    xmlSaveCtxtPtr	xmlSaveToFilename	(const char * filename,
    					 const char * encoding,
    					 int options)
Create a document saving context serializing to a filename or possibly to an URL (but this is less reliable) with the encoding and the options given.
`filename`: | a file name or an URL
`encoding`: | the encoding name to use or NULL
`options`: | a set of xmlSaveOptions
`Returns`: | a new serialization context or NULL in case of error.
### Function: xmlSaveToIO
    xmlSaveCtxtPtr	xmlSaveToIO		(xmlOutputWriteCallback iowrite,
    					 xmlOutputCloseCallback ioclose,
    					 void * ioctx,
    					 const char * encoding,
    					 int options)
Create a document saving context serializing to a file descriptor with the encoding and the options given
`iowrite`: | an I/O write function
`ioclose`: | an I/O close function
`ioctx`: | an I/O handler
`encoding`: | the encoding name to use or NULL
`options`: | a set of xmlSaveOptions
`Returns`: | a new serialization context or NULL in case of error.
### Function: xmlSaveTree
    long	xmlSaveTree			(xmlSaveCtxtPtr ctxt,
    					 xmlNodePtr node)
Save a subtree starting at the node parameter to a saving context TODO: The function is not fully implemented yet as it does not return the byte count but 0 instead
`ctxt`: | a document saving context
`node`: | a document
`Returns`: | the number of byte written or -1 in case of error
Daniel Veillard