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parser.go
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parser.go
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package confi
import (
"strings"
)
// parse takes the raw os.Args and splits them up into
// a slice of CoreRawArguments for future processing
func parse(settings CoreSettings) []CoreRawArgument {
rawArguments := make(map[string]*CoreRawArgument)
var previousArgumentName string
for _, argument := range settings.arguments {
if strings.HasPrefix(argument, settings.prefix) {
rawArgument := new(CoreRawArgument)
argumentWithoutPrefix := argument[len(settings.prefix):]
var values []string
var length int
if strings.Contains(argumentWithoutPrefix, "=") {
values = strings.Split(argumentWithoutPrefix, "=")
length = len(values)
} else {
values = strings.Fields(argumentWithoutPrefix)
length = len(values)
}
switch true {
case length == 0:
continue
case length == 1:
argumentWithValue := values[0]
if strings.Contains(values[0], "=") {
rawArgument.name, rawArgument.values = strings.Split(argumentWithValue, "=")[0], strings.Split(argumentWithValue, "=")[1:]
} else {
rawArgument.name = values[0]
}
case length > 1:
rawArgument.name, rawArgument.values = values[0], values[1:]
}
previousArgumentName = rawArgument.name
if _, alreadyExists := rawArguments[rawArgument.name]; alreadyExists {
for _, value := range rawArgument.values {
rawArguments[rawArgument.name].values = append(rawArguments[rawArgument.name].values, value)
}
} else {
rawArguments[rawArgument.name] = rawArgument
}
} else {
if len(previousArgumentName) > 0 {
rawArguments[previousArgumentName].values = append(rawArguments[previousArgumentName].values, argument)
}
}
}
rawArgumentsReturnValue := make([]CoreRawArgument, 0)
for _, rawArgument := range rawArguments {
values := make([]string, 0)
for _, value := range rawArgument.values {
if len(value) != 0 {
values = append(values, value)
}
}
rawArgument.values = values
rawArgumentsReturnValue = append(rawArgumentsReturnValue, *rawArgument)
}
return rawArgumentsReturnValue
}