func slurp(strpath string) (b []byte) {
b, err := ioutil.ReadFile(strpath)
if err != nil {
handy.Check(err)
}
return b
}
func NorwayFile(fname string) int {
var (
ascii byte = 1
utf8 byte
latin1 byte
prev byte
b []byte
e error
)
b, e = ioutil.ReadFile(fname)
handy.Check(e)
for i := 0; i < len(b); i++ {
if b[i] > 127 {
ascii = 0
}
if looksUnicode(prev, b[i]) {
utf8 = 1
}
if looksLatin(b[i]) {
latin1 = 1
}
prev = b[i]
if !conflict(ascii, utf8, latin1) && ascii == 0 {
i = len(b) // breaks
}
}
if !conflict(ascii, utf8, latin1) {
switch {
case latin1 == 1:
return LATIN1
case utf8 == 1:
return UTF8
case ascii == 1:
return ASCII
}
}
return UNSURE
}
// gorun like stuff
func ParseSingle(pathname string) (pkgs []*Package, name string) {
tree := getSyntaxTreeOrDie(pathname, parser.ImportsOnly)
shortname := tree.Name.String()
if shortname != "main" {
log.Fatalf("[ERROR] running a single file requires 'main' package\n")
}
p := newPackage()
p.ShortName = shortname
absPath, e := filepath.Abs(pathname)
handy.Check(e)
stub := filepath.Join(os.TempDir(), "godag")
handy.DirOrMkdir(stub)
name = filepath.Join(stub, handy.Sha1(absPath))
p.Name = name
p.Files = append(p.Files, pathname)
pkgs = append(pkgs, p)
return
}