Flexible VersionNumber parsing in Julia
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Updated Last
12 Months Ago
Started In
February 2018


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The VersionParsing package implements flexible parsing of version-number strings into Julia's built-in VersionNumber type, via the vparse(string) function.

Unlike the VersionNumber(string) constructor, vparse(string) can handle version-number strings in a much wider range of formats than are encompassed by the semver standard. This is useful in order to support VersionNumber comparisons applied to "foreign" version numbers from external packages.

For example,

  • Non-numeric prefixes are stripped along with any invalid version characters. Commas are treated as decimal points.
  • Text following whitespace after the version number is ignored.
  • major.minor.patch.x.y.z is supported, with x.y.z prepended to the semver build identifier, i.e. it is parsed like major.minor.patch+x.y.z.
  • Multiple +x+y build identifiers are concatenated as if they were +x.y.
  • A leading 0 is prepended if needed, e.g. .x is treated as 0.x.
  • When all else fails, everything except the first major.minor.patch digits found are ignored.

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