forked from ava-labs/avalanchego
/
parser.go
70 lines (57 loc) · 1.47 KB
/
parser.go
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// Copyright (C) 2019-2022, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package version
import (
"fmt"
"strconv"
"strings"
)
func Parse(s string) (*Semantic, error) {
if !strings.HasPrefix(s, "v") {
return nil, fmt.Errorf("version string %q missing required prefix", s)
}
s = s[1:]
major, minor, patch, err := parseVersions(s)
if err != nil {
return nil, err
}
return &Semantic{
Major: major,
Minor: minor,
Patch: patch,
}, nil
}
func ParseApplication(s string) (*Application, error) {
if !strings.HasPrefix(s, "avalanche/") {
return nil, fmt.Errorf("application string %q missing required prefix", s)
}
s = s[10:]
major, minor, patch, err := parseVersions(s)
if err != nil {
return nil, err
}
return &Application{
Major: major,
Minor: minor,
Patch: patch,
}, nil
}
func parseVersions(s string) (int, int, int, error) {
splitVersion := strings.SplitN(s, ".", 3)
if len(splitVersion) != 3 {
return 0, 0, 0, fmt.Errorf("failed to parse %s as a version", s)
}
major, err := strconv.Atoi(splitVersion[0])
if err != nil {
return 0, 0, 0, fmt.Errorf("failed to parse %s as a version: %w", s, err)
}
minor, err := strconv.Atoi(splitVersion[1])
if err != nil {
return 0, 0, 0, fmt.Errorf("failed to parse %s as a version: %w", s, err)
}
patch, err := strconv.Atoi(splitVersion[2])
if err != nil {
return 0, 0, 0, fmt.Errorf("failed to parse %s as a version: %w", s, err)
}
return major, minor, patch, nil
}