86 lines
2.1 KiB
V
86 lines
2.1 KiB
V
module semver
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// * Private structs and functions.
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struct RawVersion {
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prerelease string
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metadata string
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mut:
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raw_ints []string
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}
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const (
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ver_major = 0
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ver_minor = 1
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ver_patch = 2
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versions = [ver_major, ver_minor, ver_patch]
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)
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// TODO: Rewrite using regexps?
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// /(\d+)\.(\d+)\.(\d+)(?:\-([0-9A-Za-z-.]+))?(?:\+([0-9A-Za-z-]+))?/
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fn parse(input string) RawVersion {
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mut raw_version := input
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mut prerelease := ''
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mut metadata := ''
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plus_idx := raw_version.last_index('+') or { -1 }
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if plus_idx > 0 {
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metadata = raw_version[(plus_idx + 1)..]
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raw_version = raw_version[0..plus_idx]
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}
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hyphen_idx := raw_version.index('-') or { -1 }
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if hyphen_idx > 0 {
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prerelease = raw_version[(hyphen_idx + 1)..]
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raw_version = raw_version[0..hyphen_idx]
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}
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raw_ints := raw_version.split('.')
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return RawVersion{
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prerelease: prerelease
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metadata: metadata
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raw_ints: raw_ints
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}
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}
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fn (ver RawVersion) is_valid() bool {
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if ver.raw_ints.len != 3 {
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return false
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}
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return is_valid_number(ver.raw_ints[semver.ver_major])
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&& is_valid_number(ver.raw_ints[semver.ver_minor])
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&& is_valid_number(ver.raw_ints[semver.ver_patch]) && is_valid_string(ver.prerelease)
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&& is_valid_string(ver.metadata)
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}
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fn (ver RawVersion) is_missing(typ int) bool {
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return typ >= ver.raw_ints.len - 1
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}
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fn (raw_ver RawVersion) coerce() ?Version {
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ver := raw_ver.complete()
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if !is_valid_number(ver.raw_ints[semver.ver_major]) {
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return error('Invalid major version: $ver.raw_ints[ver_major]')
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}
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return ver.to_version()
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}
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fn (raw_ver RawVersion) complete() RawVersion {
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mut raw_ints := raw_ver.raw_ints
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for raw_ints.len < 3 {
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raw_ints << '0'
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}
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return RawVersion{
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prerelease: raw_ver.prerelease
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metadata: raw_ver.metadata
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raw_ints: raw_ints
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}
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}
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fn (raw_ver RawVersion) validate() ?Version {
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if !raw_ver.is_valid() {
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return none
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}
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return raw_ver.to_version()
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}
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fn (raw_ver RawVersion) to_version() Version {
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return Version{raw_ver.raw_ints[semver.ver_major].int(), raw_ver.raw_ints[semver.ver_minor].int(), raw_ver.raw_ints[semver.ver_patch].int(), raw_ver.prerelease, raw_ver.metadata}
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}
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