Make Nix builds work

1 files changed, 837 insertions, 0 deletions

diff --git a/vendor/gopkg.in/ini.v1/key.go b/vendor/gopkg.in/ini.v1/key.go
new file mode 100644
index 0000000..a19d9f3
--- /dev/null
+++ b/vendor/gopkg.in/ini.v1/key.go
@@ -0,0 +1,837 @@
+// Copyright 2014 Unknwon
+//
+// 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.
+
+package ini
+
+import (
+        "bytes"
+        "errors"
+        "fmt"
+        "strconv"
+        "strings"
+        "time"
+)
+
+// Key represents a key under a section.
+type Key struct {
+        s               *Section
+        Comment         string
+        name            string
+        value           string
+        isAutoIncrement bool
+        isBooleanType   bool
+
+        isShadow bool
+        shadows  []*Key
+
+        nestedValues []string
+}
+
+// newKey simply return a key object with given values.
+func newKey(s *Section, name, val string) *Key {
+        return &Key{
+                s:     s,
+                name:  name,
+                value: val,
+        }
+}
+
+func (k *Key) addShadow(val string) error {
+        if k.isShadow {
+                return errors.New("cannot add shadow to another shadow key")
+        } else if k.isAutoIncrement || k.isBooleanType {
+                return errors.New("cannot add shadow to auto-increment or boolean key")
+        }
+
+        if !k.s.f.options.AllowDuplicateShadowValues {
+                // Deduplicate shadows based on their values.
+                if k.value == val {
+                        return nil
+                }
+                for i := range k.shadows {
+                        if k.shadows[i].value == val {
+                                return nil
+                        }
+                }
+        }
+
+        shadow := newKey(k.s, k.name, val)
+        shadow.isShadow = true
+        k.shadows = append(k.shadows, shadow)
+        return nil
+}
+
+// AddShadow adds a new shadow key to itself.
+func (k *Key) AddShadow(val string) error {
+        if !k.s.f.options.AllowShadows {
+                return errors.New("shadow key is not allowed")
+        }
+        return k.addShadow(val)
+}
+
+func (k *Key) addNestedValue(val string) error {
+        if k.isAutoIncrement || k.isBooleanType {
+                return errors.New("cannot add nested value to auto-increment or boolean key")
+        }
+
+        k.nestedValues = append(k.nestedValues, val)
+        return nil
+}
+
+// AddNestedValue adds a nested value to the key.
+func (k *Key) AddNestedValue(val string) error {
+        if !k.s.f.options.AllowNestedValues {
+                return errors.New("nested value is not allowed")
+        }
+        return k.addNestedValue(val)
+}
+
+// ValueMapper represents a mapping function for values, e.g. os.ExpandEnv
+type ValueMapper func(string) string
+
+// Name returns name of key.
+func (k *Key) Name() string {
+        return k.name
+}
+
+// Value returns raw value of key for performance purpose.
+func (k *Key) Value() string {
+        return k.value
+}
+
+// ValueWithShadows returns raw values of key and its shadows if any. Shadow
+// keys with empty values are ignored from the returned list.
+func (k *Key) ValueWithShadows() []string {
+        if len(k.shadows) == 0 {
+                if k.value == "" {
+                        return []string{}
+                }
+                return []string{k.value}
+        }
+
+        vals := make([]string, 0, len(k.shadows)+1)
+        if k.value != "" {
+                vals = append(vals, k.value)
+        }
+        for _, s := range k.shadows {
+                if s.value != "" {
+                        vals = append(vals, s.value)
+                }
+        }
+        return vals
+}
+
+// NestedValues returns nested values stored in the key.
+// It is possible returned value is nil if no nested values stored in the key.
+func (k *Key) NestedValues() []string {
+        return k.nestedValues
+}
+
+// transformValue takes a raw value and transforms to its final string.
+func (k *Key) transformValue(val string) string {
+        if k.s.f.ValueMapper != nil {
+                val = k.s.f.ValueMapper(val)
+        }
+
+        // Fail-fast if no indicate char found for recursive value
+        if !strings.Contains(val, "%") {
+                return val
+        }
+        for i := 0; i < depthValues; i++ {
+                vr := varPattern.FindString(val)
+                if len(vr) == 0 {
+                        break
+                }
+
+                // Take off leading '%(' and trailing ')s'.
+                noption := vr[2 : len(vr)-2]
+
+                // Search in the same section.
+                // If not found or found the key itself, then search again in default section.
+                nk, err := k.s.GetKey(noption)
+                if err != nil || k == nk {
+                        nk, _ = k.s.f.Section("").GetKey(noption)
+                        if nk == nil {
+                                // Stop when no results found in the default section,
+                                // and returns the value as-is.
+                                break
+                        }
+                }
+
+                // Substitute by new value and take off leading '%(' and trailing ')s'.
+                val = strings.Replace(val, vr, nk.value, -1)
+        }
+        return val
+}
+
+// String returns string representation of value.
+func (k *Key) String() string {
+        return k.transformValue(k.value)
+}
+
+// Validate accepts a validate function which can
+// return modifed result as key value.
+func (k *Key) Validate(fn func(string) string) string {
+        return fn(k.String())
+}
+
+// parseBool returns the boolean value represented by the string.
+//
+// It accepts 1, t, T, TRUE, true, True, YES, yes, Yes, y, ON, on, On,
+// 0, f, F, FALSE, false, False, NO, no, No, n, OFF, off, Off.
+// Any other value returns an error.
+func parseBool(str string) (value bool, err error) {
+        switch str {
+        case "1", "t", "T", "true", "TRUE", "True", "YES", "yes", "Yes", "y", "ON", "on", "On":
+                return true, nil
+        case "0", "f", "F", "false", "FALSE", "False", "NO", "no", "No", "n", "OFF", "off", "Off":
+                return false, nil
+        }
+        return false, fmt.Errorf("parsing \"%s\": invalid syntax", str)
+}
+
+// Bool returns bool type value.
+func (k *Key) Bool() (bool, error) {
+        return parseBool(k.String())
+}
+
+// Float64 returns float64 type value.
+func (k *Key) Float64() (float64, error) {
+        return strconv.ParseFloat(k.String(), 64)
+}
+
+// Int returns int type value.
+func (k *Key) Int() (int, error) {
+        v, err := strconv.ParseInt(k.String(), 0, 64)
+        return int(v), err
+}
+
+// Int64 returns int64 type value.
+func (k *Key) Int64() (int64, error) {
+        return strconv.ParseInt(k.String(), 0, 64)
+}
+
+// Uint returns uint type valued.
+func (k *Key) Uint() (uint, error) {
+        u, e := strconv.ParseUint(k.String(), 0, 64)
+        return uint(u), e
+}
+
+// Uint64 returns uint64 type value.
+func (k *Key) Uint64() (uint64, error) {
+        return strconv.ParseUint(k.String(), 0, 64)
+}
+
+// Duration returns time.Duration type value.
+func (k *Key) Duration() (time.Duration, error) {
+        return time.ParseDuration(k.String())
+}
+
+// TimeFormat parses with given format and returns time.Time type value.
+func (k *Key) TimeFormat(format string) (time.Time, error) {
+        return time.Parse(format, k.String())
+}
+
+// Time parses with RFC3339 format and returns time.Time type value.
+func (k *Key) Time() (time.Time, error) {
+        return k.TimeFormat(time.RFC3339)
+}
+
+// MustString returns default value if key value is empty.
+func (k *Key) MustString(defaultVal string) string {
+        val := k.String()
+        if len(val) == 0 {
+                k.value = defaultVal
+                return defaultVal
+        }
+        return val
+}
+
+// MustBool always returns value without error,
+// it returns false if error occurs.
+func (k *Key) MustBool(defaultVal ...bool) bool {
+        val, err := k.Bool()
+        if len(defaultVal) > 0 && err != nil {
+                k.value = strconv.FormatBool(defaultVal[0])
+                return defaultVal[0]
+        }
+        return val
+}
+
+// MustFloat64 always returns value without error,
+// it returns 0.0 if error occurs.
+func (k *Key) MustFloat64(defaultVal ...float64) float64 {
+        val, err := k.Float64()
+        if len(defaultVal) > 0 && err != nil {
+                k.value = strconv.FormatFloat(defaultVal[0], 'f', -1, 64)
+                return defaultVal[0]
+        }
+        return val
+}
+
+// MustInt always returns value without error,
+// it returns 0 if error occurs.
+func (k *Key) MustInt(defaultVal ...int) int {
+        val, err := k.Int()
+        if len(defaultVal) > 0 && err != nil {
+                k.value = strconv.FormatInt(int64(defaultVal[0]), 10)
+                return defaultVal[0]
+        }
+        return val
+}
+
+// MustInt64 always returns value without error,
+// it returns 0 if error occurs.
+func (k *Key) MustInt64(defaultVal ...int64) int64 {
+        val, err := k.Int64()
+        if len(defaultVal) > 0 && err != nil {
+                k.value = strconv.FormatInt(defaultVal[0], 10)
+                return defaultVal[0]
+        }
+        return val
+}
+
+// MustUint always returns value without error,
+// it returns 0 if error occurs.
+func (k *Key) MustUint(defaultVal ...uint) uint {
+        val, err := k.Uint()
+        if len(defaultVal) > 0 && err != nil {
+                k.value = strconv.FormatUint(uint64(defaultVal[0]), 10)
+                return defaultVal[0]
+        }
+        return val
+}
+
+// MustUint64 always returns value without error,
+// it returns 0 if error occurs.
+func (k *Key) MustUint64(defaultVal ...uint64) uint64 {
+        val, err := k.Uint64()
+        if len(defaultVal) > 0 && err != nil {
+                k.value = strconv.FormatUint(defaultVal[0], 10)
+                return defaultVal[0]
+        }
+        return val
+}
+
+// MustDuration always returns value without error,
+// it returns zero value if error occurs.
+func (k *Key) MustDuration(defaultVal ...time.Duration) time.Duration {
+        val, err := k.Duration()
+        if len(defaultVal) > 0 && err != nil {
+                k.value = defaultVal[0].String()
+                return defaultVal[0]
+        }
+        return val
+}
+
+// MustTimeFormat always parses with given format and returns value without error,
+// it returns zero value if error occurs.
+func (k *Key) MustTimeFormat(format string, defaultVal ...time.Time) time.Time {
+        val, err := k.TimeFormat(format)
+        if len(defaultVal) > 0 && err != nil {
+                k.value = defaultVal[0].Format(format)
+                return defaultVal[0]
+        }
+        return val
+}
+
+// MustTime always parses with RFC3339 format and returns value without error,
+// it returns zero value if error occurs.
+func (k *Key) MustTime(defaultVal ...time.Time) time.Time {
+        return k.MustTimeFormat(time.RFC3339, defaultVal...)
+}
+
+// In always returns value without error,
+// it returns default value if error occurs or doesn't fit into candidates.
+func (k *Key) In(defaultVal string, candidates []string) string {
+        val := k.String()
+        for _, cand := range candidates {
+                if val == cand {
+                        return val
+                }
+        }
+        return defaultVal
+}
+
+// InFloat64 always returns value without error,
+// it returns default value if error occurs or doesn't fit into candidates.
+func (k *Key) InFloat64(defaultVal float64, candidates []float64) float64 {
+        val := k.MustFloat64()
+        for _, cand := range candidates {
+                if val == cand {
+                        return val
+                }
+        }
+        return defaultVal
+}
+
+// InInt always returns value without error,
+// it returns default value if error occurs or doesn't fit into candidates.
+func (k *Key) InInt(defaultVal int, candidates []int) int {
+        val := k.MustInt()
+        for _, cand := range candidates {
+                if val == cand {
+                        return val
+                }
+        }
+        return defaultVal
+}
+
+// InInt64 always returns value without error,
+// it returns default value if error occurs or doesn't fit into candidates.
+func (k *Key) InInt64(defaultVal int64, candidates []int64) int64 {
+        val := k.MustInt64()
+        for _, cand := range candidates {
+                if val == cand {
+                        return val
+                }
+        }
+        return defaultVal
+}
+
+// InUint always returns value without error,
+// it returns default value if error occurs or doesn't fit into candidates.
+func (k *Key) InUint(defaultVal uint, candidates []uint) uint {
+        val := k.MustUint()
+        for _, cand := range candidates {
+                if val == cand {
+                        return val
+                }
+        }
+        return defaultVal
+}
+
+// InUint64 always returns value without error,
+// it returns default value if error occurs or doesn't fit into candidates.
+func (k *Key) InUint64(defaultVal uint64, candidates []uint64) uint64 {
+        val := k.MustUint64()
+        for _, cand := range candidates {
+                if val == cand {
+                        return val
+                }
+        }
+        return defaultVal
+}
+
+// InTimeFormat always parses with given format and returns value without error,
+// it returns default value if error occurs or doesn't fit into candidates.
+func (k *Key) InTimeFormat(format string, defaultVal time.Time, candidates []time.Time) time.Time {
+        val := k.MustTimeFormat(format)
+        for _, cand := range candidates {
+                if val == cand {
+                        return val
+                }
+        }
+        return defaultVal
+}
+
+// InTime always parses with RFC3339 format and returns value without error,
+// it returns default value if error occurs or doesn't fit into candidates.
+func (k *Key) InTime(defaultVal time.Time, candidates []time.Time) time.Time {
+        return k.InTimeFormat(time.RFC3339, defaultVal, candidates)
+}
+
+// RangeFloat64 checks if value is in given range inclusively,
+// and returns default value if it's not.
+func (k *Key) RangeFloat64(defaultVal, min, max float64) float64 {
+        val := k.MustFloat64()
+        if val < min || val > max {
+                return defaultVal
+        }
+        return val
+}
+
+// RangeInt checks if value is in given range inclusively,
+// and returns default value if it's not.
+func (k *Key) RangeInt(defaultVal, min, max int) int {
+        val := k.MustInt()
+        if val < min || val > max {
+                return defaultVal
+        }
+        return val
+}
+
+// RangeInt64 checks if value is in given range inclusively,
+// and returns default value if it's not.
+func (k *Key) RangeInt64(defaultVal, min, max int64) int64 {
+        val := k.MustInt64()
+        if val < min || val > max {
+                return defaultVal
+        }
+        return val
+}
+
+// RangeTimeFormat checks if value with given format is in given range inclusively,
+// and returns default value if it's not.
+func (k *Key) RangeTimeFormat(format string, defaultVal, min, max time.Time) time.Time {
+        val := k.MustTimeFormat(format)
+        if val.Unix() < min.Unix() || val.Unix() > max.Unix() {
+                return defaultVal
+        }
+        return val
+}
+
+// RangeTime checks if value with RFC3339 format is in given range inclusively,
+// and returns default value if it's not.
+func (k *Key) RangeTime(defaultVal, min, max time.Time) time.Time {
+        return k.RangeTimeFormat(time.RFC3339, defaultVal, min, max)
+}
+
+// Strings returns list of string divided by given delimiter.
+func (k *Key) Strings(delim string) []string {
+        str := k.String()
+        if len(str) == 0 {
+                return []string{}
+        }
+
+        runes := []rune(str)
+        vals := make([]string, 0, 2)
+        var buf bytes.Buffer
+        escape := false
+        idx := 0
+        for {
+                if escape {
+                        escape = false
+                        if runes[idx] != '\\' && !strings.HasPrefix(string(runes[idx:]), delim) {
+                                buf.WriteRune('\\')
+                        }
+                        buf.WriteRune(runes[idx])
+                } else {
+                        if runes[idx] == '\\' {
+                                escape = true
+                        } else if strings.HasPrefix(string(runes[idx:]), delim) {
+                                idx += len(delim) - 1
+                                vals = append(vals, strings.TrimSpace(buf.String()))
+                                buf.Reset()
+                        } else {
+                                buf.WriteRune(runes[idx])
+                        }
+                }
+                idx++
+                if idx == len(runes) {
+                        break
+                }
+        }
+
+        if buf.Len() > 0 {
+                vals = append(vals, strings.TrimSpace(buf.String()))
+        }
+
+        return vals
+}
+
+// StringsWithShadows returns list of string divided by given delimiter.
+// Shadows will also be appended if any.
+func (k *Key) StringsWithShadows(delim string) []string {
+        vals := k.ValueWithShadows()
+        results := make([]string, 0, len(vals)*2)
+        for i := range vals {
+                if len(vals) == 0 {
+                        continue
+                }
+
+                results = append(results, strings.Split(vals[i], delim)...)
+        }
+
+        for i := range results {
+                results[i] = k.transformValue(strings.TrimSpace(results[i]))
+        }
+        return results
+}
+
+// Float64s returns list of float64 divided by given delimiter. Any invalid input will be treated as zero value.
+func (k *Key) Float64s(delim string) []float64 {
+        vals, _ := k.parseFloat64s(k.Strings(delim), true, false)
+        return vals
+}
+
+// Ints returns list of int divided by given delimiter. Any invalid input will be treated as zero value.
+func (k *Key) Ints(delim string) []int {
+        vals, _ := k.parseInts(k.Strings(delim), true, false)
+        return vals
+}
+
+// Int64s returns list of int64 divided by given delimiter. Any invalid input will be treated as zero value.
+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
+}
+
+// Bools returns list of bool divided by given delimiter. Any invalid input will be treated as zero value.
+func (k *Key) Bools(delim string) []bool {
+        vals, _ := k.parseBools(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
+}
+
+// ValidBools returns list of bool 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) ValidBools(delim string) []bool {
+        vals, _ := k.parseBools(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)
+}
+
+// StrictBools returns list of bool divided by given delimiter or error on first invalid input.
+func (k *Key) StrictBools(delim string) ([]bool, error) {
+        return k.parseBools(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)
+}
+
+// parseBools transforms strings to bools.
+func (k *Key) parseBools(strs []string, addInvalid, returnOnInvalid bool) ([]bool, error) {
+        vals := make([]bool, 0, len(strs))
+        parser := func(str string) (interface{}, error) {
+                val, err := parseBool(str)
+                return val, err
+        }
+        rawVals, err := k.doParse(strs, addInvalid, returnOnInvalid, parser)
+        if err == nil {
+                for _, val := range rawVals {
+                        vals = append(vals, val.(bool))
+                }
+        }
+        return vals, err
+}
+
+// parseFloat64s transforms strings to float64s.
+func (k *Key) parseFloat64s(strs []string, addInvalid, returnOnInvalid bool) ([]float64, error) {
+        vals := make([]float64, 0, len(strs))
+        parser := func(str string) (interface{}, error) {
+                val, err := strconv.ParseFloat(str, 64)
+                return val, err
+        }
+        rawVals, err := k.doParse(strs, addInvalid, returnOnInvalid, parser)
+        if err == nil {
+                for _, val := range rawVals {
+                        vals = append(vals, val.(float64))
+                }
+        }
+        return vals, err
+}
+
+// parseInts transforms strings to ints.
+func (k *Key) parseInts(strs []string, addInvalid, returnOnInvalid bool) ([]int, error) {
+        vals := make([]int, 0, len(strs))
+        parser := func(str string) (interface{}, error) {
+                val, err := strconv.ParseInt(str, 0, 64)
+                return val, err
+        }
+        rawVals, err := k.doParse(strs, addInvalid, returnOnInvalid, parser)
+        if err == nil {
+                for _, val := range rawVals {
+                        vals = append(vals, int(val.(int64)))
+                }
+        }
+        return vals, err
+}
+
+// parseInt64s transforms strings to int64s.
+func (k *Key) parseInt64s(strs []string, addInvalid, returnOnInvalid bool) ([]int64, error) {
+        vals := make([]int64, 0, len(strs))
+        parser := func(str string) (interface{}, error) {
+                val, err := strconv.ParseInt(str, 0, 64)
+                return val, err
+        }
+
+        rawVals, err := k.doParse(strs, addInvalid, returnOnInvalid, parser)
+        if err == nil {
+                for _, val := range rawVals {
+                        vals = append(vals, val.(int64))
+                }
+        }
+        return vals, err
+}
+
+// parseUints transforms strings to uints.
+func (k *Key) parseUints(strs []string, addInvalid, returnOnInvalid bool) ([]uint, error) {
+        vals := make([]uint, 0, len(strs))
+        parser := func(str string) (interface{}, error) {
+                val, err := strconv.ParseUint(str, 0, 64)
+                return val, err
+        }
+
+        rawVals, err := k.doParse(strs, addInvalid, returnOnInvalid, parser)
+        if err == nil {
+                for _, val := range rawVals {
+                        vals = append(vals, uint(val.(uint64)))
+                }
+        }
+        return vals, err
+}
+
+// parseUint64s transforms strings to uint64s.
+func (k *Key) parseUint64s(strs []string, addInvalid, returnOnInvalid bool) ([]uint64, error) {
+        vals := make([]uint64, 0, len(strs))
+        parser := func(str string) (interface{}, error) {
+                val, err := strconv.ParseUint(str, 0, 64)
+                return val, err
+        }
+        rawVals, err := k.doParse(strs, addInvalid, returnOnInvalid, parser)
+        if err == nil {
+                for _, val := range rawVals {
+                        vals = append(vals, val.(uint64))
+                }
+        }
+        return vals, err
+}
+
+type Parser func(str string) (interface{}, error)
+
+// 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))
+        parser := func(str string) (interface{}, error) {
+                val, err := time.Parse(format, str)
+                return val, err
+        }
+        rawVals, err := k.doParse(strs, addInvalid, returnOnInvalid, parser)
+        if err == nil {
+                for _, val := range rawVals {
+                        vals = append(vals, val.(time.Time))
+                }
+        }
+        return vals, err
+}
+
+// doParse transforms strings to different types
+func (k *Key) doParse(strs []string, addInvalid, returnOnInvalid bool, parser Parser) ([]interface{}, error) {
+        vals := make([]interface{}, 0, len(strs))
+        for _, str := range strs {
+                val, err := parser(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
+}