forked from Shiloh/githaven
753 lines
21 KiB
Go
753 lines
21 KiB
Go
// Copyright 2014 Unknwon
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//
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// Licensed under the Apache License, Version 2.0 (the "License"): you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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package ini
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import (
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"bytes"
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"errors"
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"fmt"
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"strconv"
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"strings"
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"time"
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)
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// Key represents a key under a section.
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type Key struct {
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s *Section
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Comment string
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name string
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value string
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isAutoIncrement bool
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isBooleanType bool
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isShadow bool
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shadows []*Key
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nestedValues []string
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}
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// newKey simply return a key object with given values.
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func newKey(s *Section, name, val string) *Key {
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return &Key{
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s: s,
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name: name,
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value: val,
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}
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}
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func (k *Key) addShadow(val string) error {
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if k.isShadow {
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return errors.New("cannot add shadow to another shadow key")
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} else if k.isAutoIncrement || k.isBooleanType {
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return errors.New("cannot add shadow to auto-increment or boolean key")
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}
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shadow := newKey(k.s, k.name, val)
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shadow.isShadow = true
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k.shadows = append(k.shadows, shadow)
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return nil
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}
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// AddShadow adds a new shadow key to itself.
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func (k *Key) AddShadow(val string) error {
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if !k.s.f.options.AllowShadows {
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return errors.New("shadow key is not allowed")
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}
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return k.addShadow(val)
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}
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func (k *Key) addNestedValue(val string) error {
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if k.isAutoIncrement || k.isBooleanType {
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return errors.New("cannot add nested value to auto-increment or boolean key")
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}
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k.nestedValues = append(k.nestedValues, val)
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return nil
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}
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func (k *Key) AddNestedValue(val string) error {
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if !k.s.f.options.AllowNestedValues {
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return errors.New("nested value is not allowed")
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}
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return k.addNestedValue(val)
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}
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// ValueMapper represents a mapping function for values, e.g. os.ExpandEnv
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type ValueMapper func(string) string
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// Name returns name of key.
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func (k *Key) Name() string {
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return k.name
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}
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// Value returns raw value of key for performance purpose.
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func (k *Key) Value() string {
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return k.value
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}
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// ValueWithShadows returns raw values of key and its shadows if any.
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func (k *Key) ValueWithShadows() []string {
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if len(k.shadows) == 0 {
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return []string{k.value}
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}
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vals := make([]string, len(k.shadows)+1)
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vals[0] = k.value
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for i := range k.shadows {
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vals[i+1] = k.shadows[i].value
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}
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return vals
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}
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// NestedValues returns nested values stored in the key.
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// It is possible returned value is nil if no nested values stored in the key.
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func (k *Key) NestedValues() []string {
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return k.nestedValues
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}
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// transformValue takes a raw value and transforms to its final string.
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func (k *Key) transformValue(val string) string {
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if k.s.f.ValueMapper != nil {
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val = k.s.f.ValueMapper(val)
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}
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// Fail-fast if no indicate char found for recursive value
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if !strings.Contains(val, "%") {
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return val
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}
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for i := 0; i < _DEPTH_VALUES; i++ {
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vr := varPattern.FindString(val)
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if len(vr) == 0 {
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break
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}
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// Take off leading '%(' and trailing ')s'.
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noption := vr[2 : len(vr)-2]
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// Search in the same section.
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nk, err := k.s.GetKey(noption)
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if err != nil || k == nk {
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// Search again in default section.
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nk, _ = k.s.f.Section("").GetKey(noption)
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}
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// Substitute by new value and take off leading '%(' and trailing ')s'.
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val = strings.Replace(val, vr, nk.value, -1)
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}
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return val
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}
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// String returns string representation of value.
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func (k *Key) String() string {
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return k.transformValue(k.value)
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}
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// Validate accepts a validate function which can
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// return modifed result as key value.
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func (k *Key) Validate(fn func(string) string) string {
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return fn(k.String())
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}
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// parseBool returns the boolean value represented by the string.
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//
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// It accepts 1, t, T, TRUE, true, True, YES, yes, Yes, y, ON, on, On,
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// 0, f, F, FALSE, false, False, NO, no, No, n, OFF, off, Off.
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// Any other value returns an error.
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func parseBool(str string) (value bool, err error) {
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switch str {
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case "1", "t", "T", "true", "TRUE", "True", "YES", "yes", "Yes", "y", "ON", "on", "On":
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return true, nil
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case "0", "f", "F", "false", "FALSE", "False", "NO", "no", "No", "n", "OFF", "off", "Off":
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return false, nil
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}
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return false, fmt.Errorf("parsing \"%s\": invalid syntax", str)
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}
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// Bool returns bool type value.
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func (k *Key) Bool() (bool, error) {
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return parseBool(k.String())
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}
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// Float64 returns float64 type value.
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func (k *Key) Float64() (float64, error) {
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return strconv.ParseFloat(k.String(), 64)
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}
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// Int returns int type value.
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func (k *Key) Int() (int, error) {
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v, err := strconv.ParseInt(k.String(), 0, 64)
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return int(v), err
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}
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// Int64 returns int64 type value.
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func (k *Key) Int64() (int64, error) {
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return strconv.ParseInt(k.String(), 0, 64)
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}
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// Uint returns uint type valued.
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func (k *Key) Uint() (uint, error) {
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u, e := strconv.ParseUint(k.String(), 0, 64)
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return uint(u), e
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}
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// Uint64 returns uint64 type value.
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func (k *Key) Uint64() (uint64, error) {
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return strconv.ParseUint(k.String(), 0, 64)
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}
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// Duration returns time.Duration type value.
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func (k *Key) Duration() (time.Duration, error) {
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return time.ParseDuration(k.String())
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}
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// TimeFormat parses with given format and returns time.Time type value.
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func (k *Key) TimeFormat(format string) (time.Time, error) {
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return time.Parse(format, k.String())
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}
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// Time parses with RFC3339 format and returns time.Time type value.
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func (k *Key) Time() (time.Time, error) {
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return k.TimeFormat(time.RFC3339)
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}
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// MustString returns default value if key value is empty.
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func (k *Key) MustString(defaultVal string) string {
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val := k.String()
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if len(val) == 0 {
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k.value = defaultVal
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return defaultVal
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}
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return val
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}
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// MustBool always returns value without error,
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// it returns false if error occurs.
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func (k *Key) MustBool(defaultVal ...bool) bool {
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val, err := k.Bool()
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if len(defaultVal) > 0 && err != nil {
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k.value = strconv.FormatBool(defaultVal[0])
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return defaultVal[0]
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}
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return val
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}
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// MustFloat64 always returns value without error,
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// it returns 0.0 if error occurs.
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func (k *Key) MustFloat64(defaultVal ...float64) float64 {
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val, err := k.Float64()
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if len(defaultVal) > 0 && err != nil {
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k.value = strconv.FormatFloat(defaultVal[0], 'f', -1, 64)
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return defaultVal[0]
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}
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return val
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}
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// MustInt always returns value without error,
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// it returns 0 if error occurs.
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func (k *Key) MustInt(defaultVal ...int) int {
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val, err := k.Int()
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if len(defaultVal) > 0 && err != nil {
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k.value = strconv.FormatInt(int64(defaultVal[0]), 10)
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return defaultVal[0]
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}
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return val
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}
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// MustInt64 always returns value without error,
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// it returns 0 if error occurs.
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func (k *Key) MustInt64(defaultVal ...int64) int64 {
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val, err := k.Int64()
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if len(defaultVal) > 0 && err != nil {
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k.value = strconv.FormatInt(defaultVal[0], 10)
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return defaultVal[0]
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}
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return val
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}
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// MustUint always returns value without error,
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// it returns 0 if error occurs.
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func (k *Key) MustUint(defaultVal ...uint) uint {
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val, err := k.Uint()
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if len(defaultVal) > 0 && err != nil {
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k.value = strconv.FormatUint(uint64(defaultVal[0]), 10)
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return defaultVal[0]
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}
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return val
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}
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// MustUint64 always returns value without error,
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// it returns 0 if error occurs.
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func (k *Key) MustUint64(defaultVal ...uint64) uint64 {
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val, err := k.Uint64()
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if len(defaultVal) > 0 && err != nil {
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k.value = strconv.FormatUint(defaultVal[0], 10)
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return defaultVal[0]
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}
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return val
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}
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// MustDuration always returns value without error,
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// it returns zero value if error occurs.
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func (k *Key) MustDuration(defaultVal ...time.Duration) time.Duration {
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val, err := k.Duration()
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if len(defaultVal) > 0 && err != nil {
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k.value = defaultVal[0].String()
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return defaultVal[0]
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}
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return val
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}
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// MustTimeFormat always parses with given format and returns value without error,
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// it returns zero value if error occurs.
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func (k *Key) MustTimeFormat(format string, defaultVal ...time.Time) time.Time {
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val, err := k.TimeFormat(format)
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if len(defaultVal) > 0 && err != nil {
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k.value = defaultVal[0].Format(format)
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return defaultVal[0]
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}
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return val
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}
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// MustTime always parses with RFC3339 format and returns value without error,
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// it returns zero value if error occurs.
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func (k *Key) MustTime(defaultVal ...time.Time) time.Time {
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return k.MustTimeFormat(time.RFC3339, defaultVal...)
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}
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// In always returns value without error,
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// it returns default value if error occurs or doesn't fit into candidates.
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func (k *Key) In(defaultVal string, candidates []string) string {
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val := k.String()
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for _, cand := range candidates {
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if val == cand {
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return val
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}
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}
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return defaultVal
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}
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// InFloat64 always returns value without error,
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// it returns default value if error occurs or doesn't fit into candidates.
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func (k *Key) InFloat64(defaultVal float64, candidates []float64) float64 {
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val := k.MustFloat64()
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for _, cand := range candidates {
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if val == cand {
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return val
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}
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}
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return defaultVal
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}
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// InInt always returns value without error,
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// it returns default value if error occurs or doesn't fit into candidates.
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func (k *Key) InInt(defaultVal int, candidates []int) int {
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val := k.MustInt()
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for _, cand := range candidates {
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if val == cand {
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return val
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}
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}
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return defaultVal
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}
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// InInt64 always returns value without error,
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// it returns default value if error occurs or doesn't fit into candidates.
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func (k *Key) InInt64(defaultVal int64, candidates []int64) int64 {
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val := k.MustInt64()
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for _, cand := range candidates {
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if val == cand {
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return val
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}
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}
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return defaultVal
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}
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// InUint always returns value without error,
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// it returns default value if error occurs or doesn't fit into candidates.
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func (k *Key) InUint(defaultVal uint, candidates []uint) uint {
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val := k.MustUint()
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for _, cand := range candidates {
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if val == cand {
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return val
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}
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}
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return defaultVal
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}
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// InUint64 always returns value without error,
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// it returns default value if error occurs or doesn't fit into candidates.
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func (k *Key) InUint64(defaultVal uint64, candidates []uint64) uint64 {
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val := k.MustUint64()
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for _, cand := range candidates {
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if val == cand {
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return val
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}
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}
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return defaultVal
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}
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// InTimeFormat always parses with given format and returns value without error,
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// it returns default value if error occurs or doesn't fit into candidates.
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func (k *Key) InTimeFormat(format string, defaultVal time.Time, candidates []time.Time) time.Time {
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val := k.MustTimeFormat(format)
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for _, cand := range candidates {
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if val == cand {
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return val
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}
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}
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return defaultVal
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}
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// InTime always parses with RFC3339 format and returns value without error,
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// it returns default value if error occurs or doesn't fit into candidates.
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func (k *Key) InTime(defaultVal time.Time, candidates []time.Time) time.Time {
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return k.InTimeFormat(time.RFC3339, defaultVal, candidates)
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}
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// RangeFloat64 checks if value is in given range inclusively,
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// and returns default value if it's not.
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func (k *Key) RangeFloat64(defaultVal, min, max float64) float64 {
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val := k.MustFloat64()
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if val < min || val > max {
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return defaultVal
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}
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return val
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}
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// RangeInt checks if value is in given range inclusively,
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// and returns default value if it's not.
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func (k *Key) RangeInt(defaultVal, min, max int) int {
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val := k.MustInt()
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if val < min || val > max {
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return defaultVal
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}
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return val
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}
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// RangeInt64 checks if value is in given range inclusively,
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// and returns default value if it's not.
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func (k *Key) RangeInt64(defaultVal, min, max int64) int64 {
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val := k.MustInt64()
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if val < min || val > max {
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return defaultVal
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}
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return val
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}
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// RangeTimeFormat checks if value with given format is in given range inclusively,
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// and returns default value if it's not.
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func (k *Key) RangeTimeFormat(format string, defaultVal, min, max time.Time) time.Time {
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val := k.MustTimeFormat(format)
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if val.Unix() < min.Unix() || val.Unix() > max.Unix() {
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return defaultVal
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}
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return val
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}
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// RangeTime checks if value with RFC3339 format is in given range inclusively,
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// and returns default value if it's not.
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func (k *Key) RangeTime(defaultVal, min, max time.Time) time.Time {
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return k.RangeTimeFormat(time.RFC3339, defaultVal, min, max)
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}
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// Strings returns list of string divided by given delimiter.
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func (k *Key) Strings(delim string) []string {
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str := k.String()
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if len(str) == 0 {
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return []string{}
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}
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runes := []rune(str)
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vals := make([]string, 0, 2)
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var buf bytes.Buffer
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escape := false
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idx := 0
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for {
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if escape {
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escape = false
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if runes[idx] != '\\' && !strings.HasPrefix(string(runes[idx:]), delim) {
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buf.WriteRune('\\')
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}
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buf.WriteRune(runes[idx])
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} else {
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if runes[idx] == '\\' {
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escape = true
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} else if strings.HasPrefix(string(runes[idx:]), delim) {
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idx += len(delim) - 1
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vals = append(vals, strings.TrimSpace(buf.String()))
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buf.Reset()
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} else {
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buf.WriteRune(runes[idx])
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}
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}
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idx += 1
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if idx == len(runes) {
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break
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}
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}
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if buf.Len() > 0 {
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vals = append(vals, strings.TrimSpace(buf.String()))
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}
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return vals
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}
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// StringsWithShadows returns list of string divided by given delimiter.
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// Shadows will also be appended if any.
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func (k *Key) StringsWithShadows(delim string) []string {
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vals := k.ValueWithShadows()
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results := make([]string, 0, len(vals)*2)
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for i := range vals {
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if len(vals) == 0 {
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continue
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}
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results = append(results, strings.Split(vals[i], delim)...)
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}
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for i := range results {
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results[i] = k.transformValue(strings.TrimSpace(results[i]))
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}
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return results
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}
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// Float64s returns list of float64 divided by given delimiter. Any invalid input will be treated as zero value.
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func (k *Key) Float64s(delim string) []float64 {
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vals, _ := k.parseFloat64s(k.Strings(delim), true, false)
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return vals
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}
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// Ints returns list of int divided by given delimiter. Any invalid input will be treated as zero value.
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func (k *Key) Ints(delim string) []int {
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vals, _ := k.parseInts(k.Strings(delim), true, false)
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return vals
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}
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// Int64s returns list of int64 divided by given delimiter. Any invalid input will be treated as zero value.
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|
func (k *Key) Int64s(delim string) []int64 {
|
|
vals, _ := k.parseInt64s(k.Strings(delim), true, false)
|
|
return vals
|
|
}
|
|
|
|
// Uints returns list of uint divided by given delimiter. Any invalid input will be treated as zero value.
|
|
func (k *Key) Uints(delim string) []uint {
|
|
vals, _ := k.parseUints(k.Strings(delim), true, false)
|
|
return vals
|
|
}
|
|
|
|
// Uint64s returns list of uint64 divided by given delimiter. Any invalid input will be treated as zero value.
|
|
func (k *Key) Uint64s(delim string) []uint64 {
|
|
vals, _ := k.parseUint64s(k.Strings(delim), true, false)
|
|
return vals
|
|
}
|
|
|
|
// TimesFormat parses with given format and returns list of time.Time divided by given delimiter.
|
|
// Any invalid input will be treated as zero value (0001-01-01 00:00:00 +0000 UTC).
|
|
func (k *Key) TimesFormat(format, delim string) []time.Time {
|
|
vals, _ := k.parseTimesFormat(format, k.Strings(delim), true, false)
|
|
return vals
|
|
}
|
|
|
|
// Times parses with RFC3339 format and returns list of time.Time divided by given delimiter.
|
|
// Any invalid input will be treated as zero value (0001-01-01 00:00:00 +0000 UTC).
|
|
func (k *Key) Times(delim string) []time.Time {
|
|
return k.TimesFormat(time.RFC3339, delim)
|
|
}
|
|
|
|
// ValidFloat64s returns list of float64 divided by given delimiter. If some value is not float, then
|
|
// it will not be included to result list.
|
|
func (k *Key) ValidFloat64s(delim string) []float64 {
|
|
vals, _ := k.parseFloat64s(k.Strings(delim), false, false)
|
|
return vals
|
|
}
|
|
|
|
// ValidInts returns list of int divided by given delimiter. If some value is not integer, then it will
|
|
// not be included to result list.
|
|
func (k *Key) ValidInts(delim string) []int {
|
|
vals, _ := k.parseInts(k.Strings(delim), false, false)
|
|
return vals
|
|
}
|
|
|
|
// ValidInt64s returns list of int64 divided by given delimiter. If some value is not 64-bit integer,
|
|
// then it will not be included to result list.
|
|
func (k *Key) ValidInt64s(delim string) []int64 {
|
|
vals, _ := k.parseInt64s(k.Strings(delim), false, false)
|
|
return vals
|
|
}
|
|
|
|
// ValidUints returns list of uint divided by given delimiter. If some value is not unsigned integer,
|
|
// then it will not be included to result list.
|
|
func (k *Key) ValidUints(delim string) []uint {
|
|
vals, _ := k.parseUints(k.Strings(delim), false, false)
|
|
return vals
|
|
}
|
|
|
|
// ValidUint64s returns list of uint64 divided by given delimiter. If some value is not 64-bit unsigned
|
|
// integer, then it will not be included to result list.
|
|
func (k *Key) ValidUint64s(delim string) []uint64 {
|
|
vals, _ := k.parseUint64s(k.Strings(delim), false, false)
|
|
return vals
|
|
}
|
|
|
|
// ValidTimesFormat parses with given format and returns list of time.Time divided by given delimiter.
|
|
func (k *Key) ValidTimesFormat(format, delim string) []time.Time {
|
|
vals, _ := k.parseTimesFormat(format, k.Strings(delim), false, false)
|
|
return vals
|
|
}
|
|
|
|
// ValidTimes parses with RFC3339 format and returns list of time.Time divided by given delimiter.
|
|
func (k *Key) ValidTimes(delim string) []time.Time {
|
|
return k.ValidTimesFormat(time.RFC3339, delim)
|
|
}
|
|
|
|
// StrictFloat64s returns list of float64 divided by given delimiter or error on first invalid input.
|
|
func (k *Key) StrictFloat64s(delim string) ([]float64, error) {
|
|
return k.parseFloat64s(k.Strings(delim), false, true)
|
|
}
|
|
|
|
// StrictInts returns list of int divided by given delimiter or error on first invalid input.
|
|
func (k *Key) StrictInts(delim string) ([]int, error) {
|
|
return k.parseInts(k.Strings(delim), false, true)
|
|
}
|
|
|
|
// StrictInt64s returns list of int64 divided by given delimiter or error on first invalid input.
|
|
func (k *Key) StrictInt64s(delim string) ([]int64, error) {
|
|
return k.parseInt64s(k.Strings(delim), false, true)
|
|
}
|
|
|
|
// StrictUints returns list of uint divided by given delimiter or error on first invalid input.
|
|
func (k *Key) StrictUints(delim string) ([]uint, error) {
|
|
return k.parseUints(k.Strings(delim), false, true)
|
|
}
|
|
|
|
// StrictUint64s returns list of uint64 divided by given delimiter or error on first invalid input.
|
|
func (k *Key) StrictUint64s(delim string) ([]uint64, error) {
|
|
return k.parseUint64s(k.Strings(delim), false, true)
|
|
}
|
|
|
|
// StrictTimesFormat parses with given format and returns list of time.Time divided by given delimiter
|
|
// or error on first invalid input.
|
|
func (k *Key) StrictTimesFormat(format, delim string) ([]time.Time, error) {
|
|
return k.parseTimesFormat(format, k.Strings(delim), false, true)
|
|
}
|
|
|
|
// StrictTimes parses with RFC3339 format and returns list of time.Time divided by given delimiter
|
|
// or error on first invalid input.
|
|
func (k *Key) StrictTimes(delim string) ([]time.Time, error) {
|
|
return k.StrictTimesFormat(time.RFC3339, delim)
|
|
}
|
|
|
|
// parseFloat64s transforms strings to float64s.
|
|
func (k *Key) parseFloat64s(strs []string, addInvalid, returnOnInvalid bool) ([]float64, error) {
|
|
vals := make([]float64, 0, len(strs))
|
|
for _, str := range strs {
|
|
val, err := strconv.ParseFloat(str, 64)
|
|
if err != nil && returnOnInvalid {
|
|
return nil, err
|
|
}
|
|
if err == nil || addInvalid {
|
|
vals = append(vals, val)
|
|
}
|
|
}
|
|
return vals, nil
|
|
}
|
|
|
|
// parseInts transforms strings to ints.
|
|
func (k *Key) parseInts(strs []string, addInvalid, returnOnInvalid bool) ([]int, error) {
|
|
vals := make([]int, 0, len(strs))
|
|
for _, str := range strs {
|
|
valInt64, err := strconv.ParseInt(str, 0, 64)
|
|
val := int(valInt64)
|
|
if err != nil && returnOnInvalid {
|
|
return nil, err
|
|
}
|
|
if err == nil || addInvalid {
|
|
vals = append(vals, val)
|
|
}
|
|
}
|
|
return vals, nil
|
|
}
|
|
|
|
// parseInt64s transforms strings to int64s.
|
|
func (k *Key) parseInt64s(strs []string, addInvalid, returnOnInvalid bool) ([]int64, error) {
|
|
vals := make([]int64, 0, len(strs))
|
|
for _, str := range strs {
|
|
val, err := strconv.ParseInt(str, 0, 64)
|
|
if err != nil && returnOnInvalid {
|
|
return nil, err
|
|
}
|
|
if err == nil || addInvalid {
|
|
vals = append(vals, val)
|
|
}
|
|
}
|
|
return vals, nil
|
|
}
|
|
|
|
// parseUints transforms strings to uints.
|
|
func (k *Key) parseUints(strs []string, addInvalid, returnOnInvalid bool) ([]uint, error) {
|
|
vals := make([]uint, 0, len(strs))
|
|
for _, str := range strs {
|
|
val, err := strconv.ParseUint(str, 0, 0)
|
|
if err != nil && returnOnInvalid {
|
|
return nil, err
|
|
}
|
|
if err == nil || addInvalid {
|
|
vals = append(vals, uint(val))
|
|
}
|
|
}
|
|
return vals, nil
|
|
}
|
|
|
|
// parseUint64s transforms strings to uint64s.
|
|
func (k *Key) parseUint64s(strs []string, addInvalid, returnOnInvalid bool) ([]uint64, error) {
|
|
vals := make([]uint64, 0, len(strs))
|
|
for _, str := range strs {
|
|
val, err := strconv.ParseUint(str, 0, 64)
|
|
if err != nil && returnOnInvalid {
|
|
return nil, err
|
|
}
|
|
if err == nil || addInvalid {
|
|
vals = append(vals, val)
|
|
}
|
|
}
|
|
return vals, nil
|
|
}
|
|
|
|
// parseTimesFormat transforms strings to times in given format.
|
|
func (k *Key) parseTimesFormat(format string, strs []string, addInvalid, returnOnInvalid bool) ([]time.Time, error) {
|
|
vals := make([]time.Time, 0, len(strs))
|
|
for _, str := range strs {
|
|
val, err := time.Parse(format, str)
|
|
if err != nil && returnOnInvalid {
|
|
return nil, err
|
|
}
|
|
if err == nil || addInvalid {
|
|
vals = append(vals, val)
|
|
}
|
|
}
|
|
return vals, nil
|
|
}
|
|
|
|
// SetValue changes key value.
|
|
func (k *Key) SetValue(v string) {
|
|
if k.s.f.BlockMode {
|
|
k.s.f.lock.Lock()
|
|
defer k.s.f.lock.Unlock()
|
|
}
|
|
|
|
k.value = v
|
|
k.s.keysHash[k.name] = v
|
|
}
|