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  • ARC reader process

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  1. The reader starts by reading 3 lines. (recordLine, versionLine and fieldLine)
  2. If the recordLine is non empty, it check for a leading "filedesc://".
  3. If the versionLine is non empty, parse and validate the version, reserved and origin fields.
  4. If the fieldLine is non empty, identify which field version is being used. (Defaults to v1.0 is unidentified)
  5. If the recordLine is non empty, parse and validate all the record fields.
  6. Process payload if present. (V1.1 feature)

Step 1

The first thing the version block reader does is initialize various internal fields and then read 3 lines from the input stream.
The 3 lines read are (in order): recordLine, versionLine and fieldLine.

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