core.base.semver

A module to work with semantic versionning (semver). It allows you to parse version strings and access various components of a version such as major, minor, ...

We can use import("core.base.semver") for direct import and use.

semver.new

• Create a new semver instance from a version string. Raise an error if the parsing failed

Function Prototype

API

semver.new(version: <string>)

Parameter Description

Parameter	Description
version	Required. Version string

Usage

Creates a new semver instance from a version string. Raises an error if parsing fails.

local version = semver.new("v2.1.0")

semver.try_parse

• Same as new, but return a nil value if the parsing failed

Function Prototype

API

semver.try_parse(version: <string>)

Parameter Description

Parameter	Description
version	Required. Version string

Usage

Same as new, but returns nil value if parsing failed.

local version = semver.try_parse("v2.1.0")

semver.match

• Match a valid version from the string

Function Prototype

API

semver.match(str: <string>, pos: <number>, pattern: <string>)

Parameter Description

Parameter	Description
str	Required. String to match from
pos	Required. Start position
pattern	Optional. Pattern to match

Usage

Matches a valid version from the string.

print(semver.match("v2.1.0", 1)) -- start from position 1
print(semver.match("v2.1.0", 0, "%d+%.%d+"))

2.1.0
2.1

semver.is_valid

• Get if a given string version is valid, by testing if the version can be parsed

Function Prototype

API

semver.is_valid(version: <string>)

Parameter Description

Parameter	Description
version	Required. Version string to validate

Usage

Tests if the version can be parsed.

print(semver.is_valid("536f2bd6a092eba91315b7d1e120dff63392a11d"))
print(semver.is_valid("v2.1.0-pre"))

false
true

semver.is_valid_range

• Test if the given range is a valid one

Function Prototype

API

semver.is_valid_range(range: <string>)

Parameter Description

Parameter	Description
range	Required. Range string to validate

Usage

Tests if the given range is a valid one.

print(semver.is_valid_range(">2.1.0"))
print(semver.is_valid_range(">v2.1.0"))
print(semver.is_valid_range("2.0.0 - <2.1.0"))
print(semver.is_valid_range("1.0 || 2.1"))

true
false
false
true

semver.compare

• Compare two versions, return a number between 1 and -1

Function Prototype

API

semver.compare(v1: <string>, v2: <string>)

Parameter Description

Parameter	Description
v1	Required. First version string
v2	Required. Second version string

Usage

Compares two versions and returns a number between -1 and 1.

print(semver.compare("v2.2", "v2.2.0"))
print(semver.compare("v2.2.0", "v2.1.0"))
print(semver.compare("v2.1.1", "v2.1.0"))
print(semver.compare("v2.1.0", "v2.2.0"))

0
1
1
-1

semver.satisfies

• Check if a version satisfies a range version

Function Prototype

API

semver.satisfies(version: <string>, range: <string>)

Parameter Description

Parameter	Description
version	Required. Version string
range	Required. Range string

Usage

Checks if a version satisfies a range version.

print(semver.satisfies("v2.1.0", ">= 2.1"))
print(semver.satisfies("v2.1.0", ">1.0 <2.1"))
print(semver.satisfies("v2.1.0", ">1.0 || <2.1"))
print(semver.satisfies("v2.1.0", ">=2.x || 3.x - 4.x"))

true
false
true
true

semver.select

• Select required version from versions, tags and branches

Function Prototype

API

semver.select(range: <string>, versions: <table>, tags: <table>, branches: <table>)

Parameter Description

Parameter	Description
range	Required. Range string
versions	Required. Array of versions
tags	Required. Array of tags
branches	Required. Array of branches

Usage

Selects required version from versions, tags and branches.

local version, source = semver.select(">=1.5.0 <1.6", {"1.5.0", "1.5.1"}, {"v1.5.0"}, {"master", "dev"})
print(semver.select(">=1.5.0 <1.6", {"1.5.0", "1.5.1"}, {"v1.5.0"}, {"master", "dev"}))
print(semver.select("v1.5.0", {"1.5.0", "1.5.1"}, {"v1.5.0"}, {"master", "dev"}))
print(semver.select("master", {"1.5.0", "1.5.1"}, {"v1.5.0"}, {"master", "dev"}))

1.5.1 version
v1.5.0 tag
master branch

semver:get

• Get a value from the informations table

Function Prototype

API

semver:get(key: <string>)

Parameter Description

Parameter	Description
key	Required. Information key

Usage

Gets a value from the informations table.

local version = semver.new("v2.1.0+build")
print(version["_INFO"])
print(version:get("major"))

{
  prerelease = { },
  build = {
    "build"
  },
  version = "v2.1.0+build",
  raw = "v2.1.0+build",
  patch = 0,
  minor = 1,
  major = 2
}

2

semver:major

• Get the major version

Function Prototype

API

semver:major()

Parameter Description

No parameters required for this function.

Usage

Returns the major version number.

semver.new("v2.1.0"):major() -- return 2

semver:minor

• Get the minor version

Function Prototype

API

semver:minor()

Parameter Description

No parameters required for this function.

Usage

Returns the minor version number.

semver.new("v2.1.0"):minor() -- return 1

semver:patch

• Get the patch version

Function Prototype

API

semver:patch()

Parameter Description

No parameters required for this function.

Usage

Returns the patch version number.

semver.new("v2.1.0"):patch() -- return 0

semver:build

• Get the build version

Function Prototype

API

semver:build()

Parameter Description

No parameters required for this function.

Usage

Returns the build version.

semver.new("v2.1.0+build"):build() -- return {"build"}

semver:prerelease

• Get the prerelease version

Function Prototype

API

semver:prerelease()

Parameter Description

No parameters required for this function.

Usage

Returns the prerelease version.

semver.new("v2.1.0-prerelease"):prerelease() -- return {"prerelease"}

semver:rawstr

• Get the raw string

Function Prototype

API

semver:rawstr()

Parameter Description

No parameters required for this function.

Usage

Returns the raw version string.

semver.new("v2.1.0+build"):rawstr() -- return v2.1.0+build

semver:shortstr

• Get the short version string

Function Prototype

API

semver:shortstr()

Parameter Description

No parameters required for this function.

Usage

Returns the short version string.

semver.new("v2.1.0+build"):shortstr() -- return 2.1.0