woodpecker/vendor/github.com/golangci/misspell/notwords.go

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package misspell
import (
"bytes"
"regexp"
"strings"
)
var (
reEmail = regexp.MustCompile(`[a-zA-Z0-9_.%+-]+@[a-zA-Z0-9-.]+\.[a-zA-Z]{2,6}[^a-zA-Z]`)
reHost = regexp.MustCompile(`[a-zA-Z0-9-.]+\.[a-zA-Z]+`)
reBackslash = regexp.MustCompile(`\\[a-z]`)
)
// RemovePath attempts to strip away embedded file system paths, e.g.
// /foo/bar or /static/myimg.png
//
// TODO: windows style
//
func RemovePath(s string) string {
out := bytes.Buffer{}
var idx int
for len(s) > 0 {
if idx = strings.IndexByte(s, '/'); idx == -1 {
out.WriteString(s)
break
}
if idx > 0 {
idx--
}
var chclass string
switch s[idx] {
case '/', ' ', '\n', '\t', '\r':
chclass = " \n\r\t"
case '[':
chclass = "]\n"
case '(':
chclass = ")\n"
default:
out.WriteString(s[:idx+2])
s = s[idx+2:]
continue
}
endx := strings.IndexAny(s[idx+1:], chclass)
if endx != -1 {
out.WriteString(s[:idx+1])
out.Write(bytes.Repeat([]byte{' '}, endx))
s = s[idx+endx+1:]
} else {
out.WriteString(s)
break
}
}
return out.String()
}
// replaceWithBlanks returns a string with the same number of spaces as the input
func replaceWithBlanks(s string) string {
return strings.Repeat(" ", len(s))
}
// RemoveEmail remove email-like strings, e.g. "nickg+junk@xfoobar.com", "nickg@xyz.abc123.biz"
func RemoveEmail(s string) string {
return reEmail.ReplaceAllStringFunc(s, replaceWithBlanks)
}
// RemoveHost removes host-like strings "foobar.com" "abc123.fo1231.biz"
func RemoveHost(s string) string {
return reHost.ReplaceAllStringFunc(s, replaceWithBlanks)
}
// RemoveBackslashEscapes removes characters that are preceeded by a backslash
// commonly found in printf format stringd "\nto"
func removeBackslashEscapes(s string) string {
return reBackslash.ReplaceAllStringFunc(s, replaceWithBlanks)
}
// RemoveNotWords blanks out all the not words
func RemoveNotWords(s string) string {
// do most selective/specific first
return removeBackslashEscapes(RemoveHost(RemoveEmail(RemovePath(StripURL(s)))))
}