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