📊 GetVersionInfo

Gets structured information about the Composer version, including the version number, major/minor/patch version numbers, and release date. Equivalent to running composer --version and parsing the output into a *VersionInfo.

When to use

Use this when you need to branch on the major version number in code, record the release date, or generate a version report. Compared to GetVersion, which only returns a string, this method provides directly accessible fields.

Signature

func (c *Composer) GetVersionInfo() (*VersionInfo, error)

Parameters

This method takes no parameters.

Return value

Return value	Type	Description
First return value	*VersionInfo	Structured version information
Second return value	error	Returned when execution or parsing fails

Main fields of VersionInfo:

Field	Type	Description
Version	string	Full version number, e.g. 2.1.6
FullOutput	string	Raw command output
Major	int	Major version number
Minor	int	Minor version number
Patch	int	Patch version number
ReleaseDate	time.Time	Release date (may be zero)

Example

package main

import (
	"fmt"
	"log"

	"github.com/scagogogo/composer-skills/pkg/composer"
)

func main() {
	comp, err := composer.New(composer.DefaultOptions())
	if err != nil {
		log.Fatalf("Initialization failed: %v", err)
	}

	info, err := comp.GetVersionInfo()
	if err != nil {
		log.Fatalf("Failed to get version info: %v", err)
	}

	fmt.Printf("Composer %d.%d.%d\n", info.Major, info.Minor, info.Patch)
	if !info.ReleaseDate.IsZero() {
		fmt.Printf("Release date: %s\n", info.ReleaseDate.Format("2006-01-02"))
	}
}

Advanced

• When you only need the version number string, use the lighter GetVersion.
• The parsing logic is encapsulated in ParseVersionOutput(output) and can be reused for any composer --version output.
• Call again after upgrading Composer to confirm the new version; see SelfUpdate.