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package version
import (
"runtime/debug"
"strings"
)
// Default is the default version value used when none was found.
const Default = "dev"
// version holds the current version from the go.mod of downstream users or set by ldflag for wazero CLI.
var version string
// GetWazeroVersion returns the current version of wazero either in the go.mod or set by ldflag for wazero CLI.
//
// If this is not CLI, this assumes that downstream users of wazero imports wazero as "github.com/tetratelabs/wazero".
// To be precise, the returned string matches the require statement there.
// For example, if the go.mod has "require github.com/tetratelabs/wazero 0.1.2-12314124-abcd",
// then this returns "0.1.2-12314124-abcd".
//
// Note: this is tested in ./testdata/main_test.go with a separate go.mod to pretend as the wazero user.
func GetWazeroVersion() (ret string) {
if len(version) != 0 {
return version
}
info, ok := debug.ReadBuildInfo()
if ok {
for _, dep := range info.Deps {
// Note: here's the assumption that wazero is imported as github.com/tetratelabs/wazero.
if strings.Contains(dep.Path, "github.com/tetratelabs/wazero") {
ret = dep.Version
}
}
// In wazero CLI, wazero is a main module, so we have to get the version info from info.Main.
if versionMissing(ret) {
ret = info.Main.Version
}
}
if versionMissing(ret) {
return Default // don't return parens
}
// Cache for the subsequent calls.
version = ret
return ret
}
func versionMissing(ret string) bool {
return ret == "" || ret == "(devel)" // pkg.go defaults to (devel)
}
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