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Sorting list of version numbers

MorrisDH

Have a list of version numbers. Example list("v-0.1" "v-1.0" "v-1.1" "v-2.0" "v-11.0" "v-11.2" "v-11.10")

The example is a sorted list and the latest is "v-11.10". The lastest is determined primarily by the number before the dot and secondarily by the number after the dot.

Suppose this list was not sorted? For example, given list("v-1.1" "v-1.0" "v-0.1" "v-11.10" "v-11.0" "v-11.2" "v-2.0") how can I sort this to get the version numbers in order?

Parents

  • You can use this function:

    ; put in a file with a .ils suffix since this uses local functions
procedure(CCFsortVersions(versionList)
  let(((versionPat pcreCompile("^v-(\\d+)\\.(\\d+)")))
    procedure(parseVersion(versionNum)
      letseq((
        (match pcreExecute(versionPat versionNum))
        (major match && atoi(pcreSubstitute(versionPat "\\1")) || 0)
        (minor match && atoi(pcreSubstitute(versionPat "\\2")) || 0)
        )
        list(major minor)
      ))
    procedure(compare(versionA versionB)
      destructuringBind((majorA minorA) parseVersion(versionA)
        destructuringBind((majorB minorB) parseVersion(versionB)
          if(majorA==majorB then minorA<minorB else majorA<majorB)
        )))
    sort(versionList compare)
  )
)

    This uses regular expressions to parse the version numbers, and then compares using the major versions, falling back to the minor numbers as a tie-breaker.

    Regards,

    Andrew

  • in reply to Andrew Beckett

    Works like a charm.  That code is way over my head. But that's OK for now.

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