/usr/share/gocode/src/github.com/Unknwon/com/convert.go is in golang-github-unknwon-com-dev 0.0~git20151008.0.28b053d-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 | // Copyright 2014 com 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.
package com
import (
"fmt"
"strconv"
)
// Convert string to specify type.
type StrTo string
func (f StrTo) Exist() bool {
return string(f) != string(0x1E)
}
func (f StrTo) Uint8() (uint8, error) {
v, err := strconv.ParseUint(f.String(), 10, 8)
return uint8(v), err
}
func (f StrTo) Int() (int, error) {
v, err := strconv.ParseInt(f.String(), 10, 0)
return int(v), err
}
func (f StrTo) Int64() (int64, error) {
v, err := strconv.ParseInt(f.String(), 10, 64)
return int64(v), err
}
func (f StrTo) MustUint8() uint8 {
v, _ := f.Uint8()
return v
}
func (f StrTo) MustInt() int {
v, _ := f.Int()
return v
}
func (f StrTo) MustInt64() int64 {
v, _ := f.Int64()
return v
}
func (f StrTo) String() string {
if f.Exist() {
return string(f)
}
return ""
}
// Convert any type to string.
func ToStr(value interface{}, args ...int) (s string) {
switch v := value.(type) {
case bool:
s = strconv.FormatBool(v)
case float32:
s = strconv.FormatFloat(float64(v), 'f', argInt(args).Get(0, -1), argInt(args).Get(1, 32))
case float64:
s = strconv.FormatFloat(v, 'f', argInt(args).Get(0, -1), argInt(args).Get(1, 64))
case int:
s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
case int8:
s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
case int16:
s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
case int32:
s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
case int64:
s = strconv.FormatInt(v, argInt(args).Get(0, 10))
case uint:
s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
case uint8:
s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
case uint16:
s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
case uint32:
s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
case uint64:
s = strconv.FormatUint(v, argInt(args).Get(0, 10))
case string:
s = v
case []byte:
s = string(v)
default:
s = fmt.Sprintf("%v", v)
}
return s
}
type argInt []int
func (a argInt) Get(i int, args ...int) (r int) {
if i >= 0 && i < len(a) {
r = a[i]
} else if len(args) > 0 {
r = args[0]
}
return
}
// HexStr2int converts hex format string to decimal number.
func HexStr2int(hexStr string) (int, error) {
num := 0
length := len(hexStr)
for i := 0; i < length; i++ {
char := hexStr[length-i-1]
factor := -1
switch {
case char >= '0' && char <= '9':
factor = int(char) - '0'
case char >= 'a' && char <= 'f':
factor = int(char) - 'a' + 10
default:
return -1, fmt.Errorf("invalid hex: %s", string(char))
}
num += factor * PowInt(16, i)
}
return num, nil
}
// Int2HexStr converts decimal number to hex format string.
func Int2HexStr(num int) (hex string) {
if num == 0 {
return "0"
}
for num > 0 {
r := num % 16
c := "?"
if r >= 0 && r <= 9 {
c = string(r + '0')
} else {
c = string(r + 'a' - 10)
}
hex = c + hex
num = num / 16
}
return hex
}
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