func ReadProperties(fname string) (map[string]string, error) {
props := make(map[string]string)
err := file.Filter(fname, func(_ int, line []byte) ([]byte, error) {
p := pair.Parse(unsafe2.String(line), "=").Trim()
if p.HasKey() {
props[p.Key] = strings2.TrimAfter(p.Value, "#")
}
return line, nil
})
return props, err
}
// compile compile a url path to a clean path that replace all named variable
// to _WILDCARD or _REMAINSALL and extract all variable names
// if just want to match and don't need variable value, only use ':' or '*'
// for ':', it will catch the single section of url path seperated by '/'
// for '*', it will catch all remains url path, it should appear in the last
// of pattern for variables behind it will all be ignored
//
// the query portion will be trimmed
func compile(path string) (newPath string, vars map[string]int) {
path = strings2.TrimAfter(path, "?")
l := len(path)
if path[0] != '/' {
log.Panicln("Invalid pattern, must start with '/': " + path)
}
if l != 1 && path[l-1] == '/' {
path = path[:l-1]
}
sections := strings.Split(path[1:], "/")
new := make([]byte, 0, len(path))
varIndex := 0
for _, s := range sections {
new = append(new, '/')
last := len(s)
i := last - 1
var c byte
for ; i >= 0; i-- {
if s[i] == _MATCH_WILDCARD {
c = _WILDCARD
} else if s[i] == _MATCH_REMAINSALL {
c = _REMAINSALL
} else {
continue
}
if name := s[i+1:]; len(name) > 0 {
if isInvalidSection(name) {
log.Panicf("path %s has pre-defined characters %c or %c\n",
path, _WILDCARD, _REMAINSALL)
}
if vars == nil {
vars = make(map[string]int)
}
vars[name] = varIndex
}
varIndex++
last = i
break
}
if last != 0 {
new = append(new, []byte(s[:last])...)
}
if c != 0 {
new = append(new, c)
}
}
newPath = string(new)
if vars == nil {
vars = emptyVars
}
return
}