- xmlInputCreateUrl
- xmlInputCreateMemory
- xmlInputCreateString
- xmlInputCreateFd
- xmlInputCreateIO
- xmlInputSetEncoding
These functions don't take a parser context and work on xmlParserInputs,
replacing functions working on xmlParserInputBuffers.
xmlInputCreateUrl and xmlInputSetEncoding offer fine-grained error
handling.
Several XML_INPUT_* flags offer additional control.