mirror of
https://github.com/strongdm/comply
synced 2024-11-17 05:14:55 +00:00
137 lines
3.4 KiB
Go
137 lines
3.4 KiB
Go
package goptions
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import (
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"fmt"
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"os"
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"reflect"
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"strconv"
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"strings"
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"time"
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)
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type optionFunc func(f *Flag, option, value string) error
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type optionMap map[string]optionFunc
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var (
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typeOptionMap = map[reflect.Type]optionMap{
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// Global options
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nil: optionMap{
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"description": description,
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"obligatory": obligatory,
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"mutexgroup": mutexgroup,
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},
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reflect.TypeOf(new(time.Time)).Elem(): optionMap{
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"format": time_format,
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},
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reflect.TypeOf(new(*os.File)).Elem(): optionMap{
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"create": initOptionMeta(file_create, "file_mode", 0),
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"append": initOptionMeta(file_append, "file_mode", 0),
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"rdonly": initOptionMeta(file_rdonly, "file_mode", 0),
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"wronly": initOptionMeta(file_wronly, "file_mode", 0),
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"rdwr": initOptionMeta(file_rdwr, "file_mode", 0),
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"excl": initOptionMeta(file_excl, "file_mode", 0),
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"sync": initOptionMeta(file_sync, "file_mode", 0),
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"trunc": initOptionMeta(file_trunc, "file_mode", 0),
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"perm": file_perm,
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},
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}
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)
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// Wraps another optionFunc and inits optionMeta[field] with value if it does
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// not have one already.
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func initOptionMeta(fn optionFunc, field string, init_value interface{}) optionFunc {
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return func(f *Flag, option, value string) error {
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if _, ok := f.optionMeta[field]; !ok {
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f.optionMeta[field] = init_value
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}
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return fn(f, option, value)
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}
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}
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func description(f *Flag, option, value string) error {
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f.Description = strings.Replace(value, `\`, ``, -1)
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return nil
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}
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func obligatory(f *Flag, option, value string) error {
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f.Obligatory = true
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return nil
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}
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func mutexgroup(f *Flag, option, value string) error {
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if len(value) <= 0 {
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return fmt.Errorf("Mutexgroup option needs a value")
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}
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for _, group := range strings.Split(value, ",") {
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f.MutexGroups = append(f.MutexGroups, group)
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}
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return nil
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}
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func file_create(f *Flag, option, value string) error {
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f.optionMeta["file_mode"] = f.optionMeta["file_mode"].(int) | os.O_CREATE
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return nil
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}
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func file_append(f *Flag, option, value string) error {
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f.optionMeta["file_mode"] = f.optionMeta["file_mode"].(int) | os.O_APPEND
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return nil
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}
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func file_rdonly(f *Flag, option, value string) error {
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f.optionMeta["file_mode"] = f.optionMeta["file_mode"].(int) | os.O_RDONLY
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return nil
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}
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func file_wronly(f *Flag, option, value string) error {
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f.optionMeta["file_mode"] = f.optionMeta["file_mode"].(int) | os.O_WRONLY
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return nil
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}
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func file_rdwr(f *Flag, option, value string) error {
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f.optionMeta["file_mode"] = f.optionMeta["file_mode"].(int) | os.O_RDWR
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return nil
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}
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func file_excl(f *Flag, option, value string) error {
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f.optionMeta["file_mode"] = f.optionMeta["file_mode"].(int) | os.O_EXCL
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return nil
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}
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func file_sync(f *Flag, option, value string) error {
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f.optionMeta["file_mode"] = f.optionMeta["file_mode"].(int) | os.O_SYNC
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return nil
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}
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func file_trunc(f *Flag, option, value string) error {
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f.optionMeta["file_mode"] = f.optionMeta["file_mode"].(int) | os.O_TRUNC
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return nil
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}
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func file_perm(f *Flag, option, value string) error {
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perm, err := strconv.ParseInt(value, 8, 32)
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if err != nil {
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return err
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}
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f.optionMeta["file_perm"] = uint32(perm)
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return nil
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}
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func time_format(f *Flag, option, value string) error {
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f.optionMeta["format"] = value
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return nil
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}
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func optionMapForType(t reflect.Type) optionMap {
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g := typeOptionMap[nil]
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m, _ := typeOptionMap[t]
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r := make(optionMap)
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for k, v := range g {
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r[k] = v
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}
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for k, v := range m {
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r[k] = v
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}
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return r
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}
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