pkger/here/parse.go

64 lines
1.1 KiB
Go

package here
import (
"fmt"
"path/filepath"
"regexp"
"strings"
)
func (i Info) Parse(p string) (Path, error) {
p = strings.TrimSpace(p)
p = filepath.Clean(p)
p = strings.TrimPrefix(p, i.Dir)
p = strings.Replace(p, "\\", "/", -1)
p = strings.TrimSpace(p)
if len(p) == 0 || p == ":" || p == "." {
return i.build("", "", "")
}
res := pathrx.FindAllStringSubmatch(p, -1)
if len(res) == 0 {
return Path{}, fmt.Errorf("could not parse %q", p)
}
matches := res[0]
if len(matches) != 4 {
return Path{}, fmt.Errorf("could not parse %q", p)
}
return i.build(p, matches[1], matches[3])
}
func (i Info) build(p, pkg, name string) (Path, error) {
pt := Path{
Pkg: pkg,
Name: name,
}
if strings.HasPrefix(pt.Pkg, "/") || len(pt.Pkg) == 0 {
pt.Name = pt.Pkg
pt.Pkg = i.ImportPath
}
if len(pt.Name) == 0 {
pt.Name = "/"
}
if pt.Pkg == pt.Name {
pt.Pkg = i.ImportPath
pt.Name = "/"
}
if !strings.HasPrefix(pt.Name, "/") {
pt.Name = "/" + pt.Name
}
pt.Name = strings.TrimPrefix(pt.Name, i.Dir)
return pt, nil
}
var pathrx = regexp.MustCompile("([^:]+)(:(/.+))?")