Reader Interface

All custom readers use the reader interface defined in kvcfsr.h. The members of this structure are:

fpAllocateContext()
fpInitDoc()
fpFillBuffer()
fpFreeContext()
fpHotSpothit()
fpGetSummaryInfo()
fpOpenStream()
fpCloseStream()
fpGetURL()
fpGetCharSet()
NOTE:

fpHotSpothit() and fpGetURL() are currently reserved and must be NULL.

Function Flow

The structured access layer calls the functions as follows:

  1. fpAllocateContext() is called and returns a pointer to the global context structure.
  2. After further processing within the structured access layer, fpInitDoc() is called. This function performs all required initialization for the global context structure and then returns control to the structured access layer.
  3. After further processing within the structured access layer, the fpFillBuffer() function is called repeatedly until the document is completely parsed.
  4. Finally, fpFreeContext() is called. This function frees all memory allocated within the custom reader and then returns control to the structured access layer.

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