gtsocial-umbx

cobra.go (7232B)

---

 // Copyright 2013-2023 The Cobra Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //      http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 // Commands similar to git, go tools and other modern CLI tools
 // inspired by go, go-Commander, gh and subcommand
 
 package cobra
 
 import (
 	"fmt"
 	"io"
 	"os"
 	"reflect"
 	"strconv"
 	"strings"
 	"text/template"
 	"time"
 	"unicode"
 )
 
 var templateFuncs = template.FuncMap{
 	"trim":                    strings.TrimSpace,
 	"trimRightSpace":          trimRightSpace,
 	"trimTrailingWhitespaces": trimRightSpace,
 	"appendIfNotPresent":      appendIfNotPresent,
 	"rpad":                    rpad,
 	"gt":                      Gt,
 	"eq":                      Eq,
 }
 
 var initializers []func()
 var finalizers []func()
 
 const (
 	defaultPrefixMatching  = false
 	defaultCommandSorting  = true
 	defaultCaseInsensitive = false
 )
 
 // EnablePrefixMatching allows to set automatic prefix matching. Automatic prefix matching can be a dangerous thing
 // to automatically enable in CLI tools.
 // Set this to true to enable it.
 var EnablePrefixMatching = defaultPrefixMatching
 
 // EnableCommandSorting controls sorting of the slice of commands, which is turned on by default.
 // To disable sorting, set it to false.
 var EnableCommandSorting = defaultCommandSorting
 
 // EnableCaseInsensitive allows case-insensitive commands names. (case sensitive by default)
 var EnableCaseInsensitive = defaultCaseInsensitive
 
 // MousetrapHelpText enables an information splash screen on Windows
 // if the CLI is started from explorer.exe.
 // To disable the mousetrap, just set this variable to blank string ("").
 // Works only on Microsoft Windows.
 var MousetrapHelpText = `This is a command line tool.
 
 You need to open cmd.exe and run it from there.
 `
 
 // MousetrapDisplayDuration controls how long the MousetrapHelpText message is displayed on Windows
 // if the CLI is started from explorer.exe. Set to 0 to wait for the return key to be pressed.
 // To disable the mousetrap, just set MousetrapHelpText to blank string ("").
 // Works only on Microsoft Windows.
 var MousetrapDisplayDuration = 5 * time.Second
 
 // AddTemplateFunc adds a template function that's available to Usage and Help
 // template generation.
 func AddTemplateFunc(name string, tmplFunc interface{}) {
 	templateFuncs[name] = tmplFunc
 }
 
 // AddTemplateFuncs adds multiple template functions that are available to Usage and
 // Help template generation.
 func AddTemplateFuncs(tmplFuncs template.FuncMap) {
 	for k, v := range tmplFuncs {
 		templateFuncs[k] = v
 	}
 }
 
 // OnInitialize sets the passed functions to be run when each command's
 // Execute method is called.
 func OnInitialize(y ...func()) {
 	initializers = append(initializers, y...)
 }
 
 // OnFinalize sets the passed functions to be run when each command's
 // Execute method is terminated.
 func OnFinalize(y ...func()) {
 	finalizers = append(finalizers, y...)
 }
 
 // FIXME Gt is unused by cobra and should be removed in a version 2. It exists only for compatibility with users of cobra.
 
 // Gt takes two types and checks whether the first type is greater than the second. In case of types Arrays, Chans,
 // Maps and Slices, Gt will compare their lengths. Ints are compared directly while strings are first parsed as
 // ints and then compared.
 func Gt(a interface{}, b interface{}) bool {
 	var left, right int64
 	av := reflect.ValueOf(a)
 
 	switch av.Kind() {
 	case reflect.Array, reflect.Chan, reflect.Map, reflect.Slice:
 		left = int64(av.Len())
 	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
 		left = av.Int()
 	case reflect.String:
 		left, _ = strconv.ParseInt(av.String(), 10, 64)
 	}
 
 	bv := reflect.ValueOf(b)
 
 	switch bv.Kind() {
 	case reflect.Array, reflect.Chan, reflect.Map, reflect.Slice:
 		right = int64(bv.Len())
 	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
 		right = bv.Int()
 	case reflect.String:
 		right, _ = strconv.ParseInt(bv.String(), 10, 64)
 	}
 
 	return left > right
 }
 
 // FIXME Eq is unused by cobra and should be removed in a version 2. It exists only for compatibility with users of cobra.
 
 // Eq takes two types and checks whether they are equal. Supported types are int and string. Unsupported types will panic.
 func Eq(a interface{}, b interface{}) bool {
 	av := reflect.ValueOf(a)
 	bv := reflect.ValueOf(b)
 
 	switch av.Kind() {
 	case reflect.Array, reflect.Chan, reflect.Map, reflect.Slice:
 		panic("Eq called on unsupported type")
 	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
 		return av.Int() == bv.Int()
 	case reflect.String:
 		return av.String() == bv.String()
 	}
 	return false
 }
 
 func trimRightSpace(s string) string {
 	return strings.TrimRightFunc(s, unicode.IsSpace)
 }
 
 // FIXME appendIfNotPresent is unused by cobra and should be removed in a version 2. It exists only for compatibility with users of cobra.
 
 // appendIfNotPresent will append stringToAppend to the end of s, but only if it's not yet present in s.
 func appendIfNotPresent(s, stringToAppend string) string {
 	if strings.Contains(s, stringToAppend) {
 		return s
 	}
 	return s + " " + stringToAppend
 }
 
 // rpad adds padding to the right of a string.
 func rpad(s string, padding int) string {
 	formattedString := fmt.Sprintf("%%-%ds", padding)
 	return fmt.Sprintf(formattedString, s)
 }
 
 // tmpl executes the given template text on data, writing the result to w.
 func tmpl(w io.Writer, text string, data interface{}) error {
 	t := template.New("top")
 	t.Funcs(templateFuncs)
 	template.Must(t.Parse(text))
 	return t.Execute(w, data)
 }
 
 // ld compares two strings and returns the levenshtein distance between them.
 func ld(s, t string, ignoreCase bool) int {
 	if ignoreCase {
 		s = strings.ToLower(s)
 		t = strings.ToLower(t)
 	}
 	d := make([][]int, len(s)+1)
 	for i := range d {
 		d[i] = make([]int, len(t)+1)
 	}
 	for i := range d {
 		d[i][0] = i
 	}
 	for j := range d[0] {
 		d[0][j] = j
 	}
 	for j := 1; j <= len(t); j++ {
 		for i := 1; i <= len(s); i++ {
 			if s[i-1] == t[j-1] {
 				d[i][j] = d[i-1][j-1]
 			} else {
 				min := d[i-1][j]
 				if d[i][j-1] < min {
 					min = d[i][j-1]
 				}
 				if d[i-1][j-1] < min {
 					min = d[i-1][j-1]
 				}
 				d[i][j] = min + 1
 			}
 		}
 
 	}
 	return d[len(s)][len(t)]
 }
 
 func stringInSlice(a string, list []string) bool {
 	for _, b := range list {
 		if b == a {
 			return true
 		}
 	}
 	return false
 }
 
 // CheckErr prints the msg with the prefix 'Error:' and exits with error code 1. If the msg is nil, it does nothing.
 func CheckErr(msg interface{}) {
 	if msg != nil {
 		fmt.Fprintln(os.Stderr, "Error:", msg)
 		os.Exit(1)
 	}
 }
 
 // WriteStringAndCheck writes a string into a buffer, and checks if the error is not nil.
 func WriteStringAndCheck(b io.StringWriter, s string) {
 	_, err := b.WriteString(s)
 	CheckErr(err)
 }