golang docstring access

testdoc

#!/usr/bin/gorun

package main

import "os"
import "fmt"
import "strings"
import "go/doc"
import "go/token"
import "go/parser"
import "io/ioutil"


func funcDocs(filename string, funcname string) string {

    fullsrc, err := ioutil.ReadFile(filename)
    if err != nil { panic(err.String()) }
    fullsrcs := string(fullsrc)
    src := fullsrcs[strings.Index(fullsrcs, "\n"):]
    fset := token.NewFileSet()
    f, err := parser.ParseFile(fset, filename, src, parser.ParseComments)
    if err != nil { panic(err.String()) }
    pkgdoc := doc.NewFileDoc(f)
    for i := range pkgdoc.Funcs {
        fdoc := pkgdoc.Funcs[i]
        if fdoc.Name == funcname {
            return fdoc.Doc
        }
    }
    return ""
}

// These are the docs on the main function
func main() {
    filename := os.Args[0]
    fmt.Printf("main doc is: " + funcDocs(filename, "main"))
}