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Added all required dependencies

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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5. Submission of Contributions.
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Notwithstanding the above, nothing herein shall supersede or modify the terms of
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Licensed under the Apache License, Version 2.0 (the "License");
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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Common Functions
================
[![Build Status](https://travis-ci.org/Unknwon/com.svg)](https://travis-ci.org/Unknwon/com) [![Go Walker](http://gowalker.org/api/v1/badge)](http://gowalker.org/github.com/Unknwon/com)
This is an open source project for commonly used functions for the Go programming language.
This package need >= **go 1.2**
Code Convention: based on [Go Code Convention](https://github.com/Unknwon/go-code-convention).
## Contribute
Your contribute is welcome, but you have to check following steps after you added some functions and commit them:
1. Make sure you wrote user-friendly comments for **all functions** .
2. Make sure you wrote test cases with any possible condition for **all functions** in file `*_test.go`.
3. Make sure you wrote benchmarks for **all functions** in file `*_test.go`.
4. Make sure you wrote useful examples for **all functions** in file `example_test.go`.
5. Make sure you ran `go test` and got **PASS** .

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// +build go1.2
// Copyright 2013 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 is an open source project for commonly used functions for the Go programming language.
package com
import (
"bytes"
"fmt"
"os/exec"
"runtime"
"strings"
)
// ExecCmdDirBytes executes system command in given directory
// and return stdout, stderr in bytes type, along with possible error.
func ExecCmdDirBytes(dir, cmdName string, args ...string) ([]byte, []byte, error) {
bufOut := new(bytes.Buffer)
bufErr := new(bytes.Buffer)
cmd := exec.Command(cmdName, args...)
cmd.Dir = dir
cmd.Stdout = bufOut
cmd.Stderr = bufErr
err := cmd.Run()
return bufOut.Bytes(), bufErr.Bytes(), err
}
// ExecCmdBytes executes system command
// and return stdout, stderr in bytes type, along with possible error.
func ExecCmdBytes(cmdName string, args ...string) ([]byte, []byte, error) {
return ExecCmdDirBytes("", cmdName, args...)
}
// ExecCmdDir executes system command in given directory
// and return stdout, stderr in string type, along with possible error.
func ExecCmdDir(dir, cmdName string, args ...string) (string, string, error) {
bufOut, bufErr, err := ExecCmdDirBytes(dir, cmdName, args...)
return string(bufOut), string(bufErr), err
}
// ExecCmd executes system command
// and return stdout, stderr in string type, along with possible error.
func ExecCmd(cmdName string, args ...string) (string, string, error) {
return ExecCmdDir("", cmdName, args...)
}
// _________ .__ .____
// \_ ___ \ ____ | | ___________ | | ____ ____
// / \ \/ / _ \| | / _ \_ __ \ | | / _ \ / ___\
// \ \___( <_> ) |_( <_> ) | \/ | |__( <_> ) /_/ >
// \______ /\____/|____/\____/|__| |_______ \____/\___ /
// \/ \/ /_____/
// Color number constants.
const (
Gray = uint8(iota + 90)
Red
Green
Yellow
Blue
Magenta
//NRed = uint8(31) // Normal
EndColor = "\033[0m"
)
// getColorLevel returns colored level string by given level.
func getColorLevel(level string) string {
level = strings.ToUpper(level)
switch level {
case "TRAC":
return fmt.Sprintf("\033[%dm%s\033[0m", Blue, level)
case "ERRO":
return fmt.Sprintf("\033[%dm%s\033[0m", Red, level)
case "WARN":
return fmt.Sprintf("\033[%dm%s\033[0m", Magenta, level)
case "SUCC":
return fmt.Sprintf("\033[%dm%s\033[0m", Green, level)
default:
return level
}
}
// ColorLogS colors log and return colored content.
// Log format: <level> <content [highlight][path]> [ error ].
// Level: TRAC -> blue; ERRO -> red; WARN -> Magenta; SUCC -> green; others -> default.
// Content: default; path: yellow; error -> red.
// Level has to be surrounded by "[" and "]".
// Highlights have to be surrounded by "# " and " #"(space), "#" will be deleted.
// Paths have to be surrounded by "( " and " )"(space).
// Errors have to be surrounded by "[ " and " ]"(space).
// Note: it hasn't support windows yet, contribute is welcome.
func ColorLogS(format string, a ...interface{}) string {
log := fmt.Sprintf(format, a...)
var clog string
if runtime.GOOS != "windows" {
// Level.
i := strings.Index(log, "]")
if log[0] == '[' && i > -1 {
clog += "[" + getColorLevel(log[1:i]) + "]"
}
log = log[i+1:]
// Error.
log = strings.Replace(log, "[ ", fmt.Sprintf("[\033[%dm", Red), -1)
log = strings.Replace(log, " ]", EndColor+"]", -1)
// Path.
log = strings.Replace(log, "( ", fmt.Sprintf("(\033[%dm", Yellow), -1)
log = strings.Replace(log, " )", EndColor+")", -1)
// Highlights.
log = strings.Replace(log, "# ", fmt.Sprintf("\033[%dm", Gray), -1)
log = strings.Replace(log, " #", EndColor, -1)
} else {
// Level.
i := strings.Index(log, "]")
if log[0] == '[' && i > -1 {
clog += "[" + log[1:i] + "]"
}
log = log[i+1:]
// Error.
log = strings.Replace(log, "[ ", "[", -1)
log = strings.Replace(log, " ]", "]", -1)
// Path.
log = strings.Replace(log, "( ", "(", -1)
log = strings.Replace(log, " )", ")", -1)
// Highlights.
log = strings.Replace(log, "# ", "", -1)
log = strings.Replace(log, " #", "", -1)
}
return clog + log
}
// ColorLog prints colored log to stdout.
// See color rules in function 'ColorLogS'.
func ColorLog(format string, a ...interface{}) {
fmt.Print(ColorLogS(format, a...))
}

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// 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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// Copyright 2013 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 (
"errors"
"fmt"
"os"
"path"
"strings"
)
// IsDir returns true if given path is a directory,
// or returns false when it's a file or does not exist.
func IsDir(dir string) bool {
f, e := os.Stat(dir)
if e != nil {
return false
}
return f.IsDir()
}
func statDir(dirPath, recPath string, includeDir, isDirOnly bool) ([]string, error) {
dir, err := os.Open(dirPath)
if err != nil {
return nil, err
}
defer dir.Close()
fis, err := dir.Readdir(0)
if err != nil {
return nil, err
}
statList := make([]string, 0)
for _, fi := range fis {
if strings.Contains(fi.Name(), ".DS_Store") {
continue
}
relPath := path.Join(recPath, fi.Name())
curPath := path.Join(dirPath, fi.Name())
if fi.IsDir() {
if includeDir {
statList = append(statList, relPath+"/")
}
s, err := statDir(curPath, relPath, includeDir, isDirOnly)
if err != nil {
return nil, err
}
statList = append(statList, s...)
} else if !isDirOnly {
statList = append(statList, relPath)
}
}
return statList, nil
}
// StatDir gathers information of given directory by depth-first.
// It returns slice of file list and includes subdirectories if enabled;
// it returns error and nil slice when error occurs in underlying functions,
// or given path is not a directory or does not exist.
//
// Slice does not include given path itself.
// If subdirectories is enabled, they will have suffix '/'.
func StatDir(rootPath string, includeDir ...bool) ([]string, error) {
if !IsDir(rootPath) {
return nil, errors.New("not a directory or does not exist: " + rootPath)
}
isIncludeDir := false
if len(includeDir) >= 1 {
isIncludeDir = includeDir[0]
}
return statDir(rootPath, "", isIncludeDir, false)
}
// GetAllSubDirs returns all subdirectories of given root path.
// Slice does not include given path itself.
func GetAllSubDirs(rootPath string) ([]string, error) {
if !IsDir(rootPath) {
return nil, errors.New("not a directory or does not exist: " + rootPath)
}
return statDir(rootPath, "", true, true)
}
// GetFileListBySuffix returns an ordered list of file paths.
// It recognize if given path is a file, and don't do recursive find.
func GetFileListBySuffix(dirPath, suffix string) ([]string, error) {
if !IsExist(dirPath) {
return nil, fmt.Errorf("given path does not exist: %s", dirPath)
} else if IsFile(dirPath) {
return []string{dirPath}, nil
}
// Given path is a directory.
dir, err := os.Open(dirPath)
if err != nil {
return nil, err
}
fis, err := dir.Readdir(0)
if err != nil {
return nil, err
}
files := make([]string, 0, len(fis))
for _, fi := range fis {
if strings.HasSuffix(fi.Name(), suffix) {
files = append(files, path.Join(dirPath, fi.Name()))
}
}
return files, nil
}
// CopyDir copy files recursively from source to target directory.
//
// The filter accepts a function that process the path info.
// and should return true for need to filter.
//
// It returns error when error occurs in underlying functions.
func CopyDir(srcPath, destPath string, filters ...func(filePath string) bool) error {
// Check if target directory exists.
if IsExist(destPath) {
return errors.New("file or directory alreay exists: " + destPath)
}
err := os.MkdirAll(destPath, os.ModePerm)
if err != nil {
return err
}
// Gather directory info.
infos, err := StatDir(srcPath, true)
if err != nil {
return err
}
var filter func(filePath string) bool
if len(filters) > 0 {
filter = filters[0]
}
for _, info := range infos {
if filter != nil && filter(info) {
continue
}
curPath := path.Join(destPath, info)
if strings.HasSuffix(info, "/") {
err = os.MkdirAll(curPath, os.ModePerm)
} else {
err = Copy(path.Join(srcPath, info), curPath)
}
if err != nil {
return err
}
}
return nil
}

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// Copyright 2013 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"
"io"
"io/ioutil"
"math"
"os"
"path"
)
// Storage unit constants.
const (
Byte = 1
KByte = Byte * 1024
MByte = KByte * 1024
GByte = MByte * 1024
TByte = GByte * 1024
PByte = TByte * 1024
EByte = PByte * 1024
)
func logn(n, b float64) float64 {
return math.Log(n) / math.Log(b)
}
func humanateBytes(s uint64, base float64, sizes []string) string {
if s < 10 {
return fmt.Sprintf("%dB", s)
}
e := math.Floor(logn(float64(s), base))
suffix := sizes[int(e)]
val := float64(s) / math.Pow(base, math.Floor(e))
f := "%.0f"
if val < 10 {
f = "%.1f"
}
return fmt.Sprintf(f+"%s", val, suffix)
}
// HumaneFileSize calculates the file size and generate user-friendly string.
func HumaneFileSize(s uint64) string {
sizes := []string{"B", "KB", "MB", "GB", "TB", "PB", "EB"}
return humanateBytes(s, 1024, sizes)
}
// FileMTime returns file modified time and possible error.
func FileMTime(file string) (int64, error) {
f, err := os.Stat(file)
if err != nil {
return 0, err
}
return f.ModTime().Unix(), nil
}
// FileSize returns file size in bytes and possible error.
func FileSize(file string) (int64, error) {
f, err := os.Stat(file)
if err != nil {
return 0, err
}
return f.Size(), nil
}
// Copy copies file from source to target path.
func Copy(src, dest string) error {
// Gather file information to set back later.
si, err := os.Lstat(src)
if err != nil {
return err
}
// Handle symbolic link.
if si.Mode()&os.ModeSymlink != 0 {
target, err := os.Readlink(src)
if err != nil {
return err
}
// NOTE: os.Chmod and os.Chtimes don't recoganize symbolic link,
// which will lead "no such file or directory" error.
return os.Symlink(target, dest)
}
sr, err := os.Open(src)
if err != nil {
return err
}
defer sr.Close()
dw, err := os.Create(dest)
if err != nil {
return err
}
defer dw.Close()
if _, err = io.Copy(dw, sr); err != nil {
return err
}
// Set back file information.
if err = os.Chtimes(dest, si.ModTime(), si.ModTime()); err != nil {
return err
}
return os.Chmod(dest, si.Mode())
}
// WriteFile writes data to a file named by filename.
// If the file does not exist, WriteFile creates it
// and its upper level paths.
func WriteFile(filename string, data []byte) error {
os.MkdirAll(path.Dir(filename), os.ModePerm)
return ioutil.WriteFile(filename, data, 0655)
}
// IsFile returns true if given path is a file,
// or returns false when it's a directory or does not exist.
func IsFile(filePath string) bool {
f, e := os.Stat(filePath)
if e != nil {
return false
}
return !f.IsDir()
}
// IsExist checks whether a file or directory exists.
// It returns false when the file or directory does not exist.
func IsExist(path string) bool {
_, err := os.Stat(path)
return err == nil || os.IsExist(err)
}

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// Copyright 2013 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 (
"html"
"regexp"
"strings"
)
// Html2JS converts []byte type of HTML content into JS format.
func Html2JS(data []byte) []byte {
s := string(data)
s = strings.Replace(s, `\`, `\\`, -1)
s = strings.Replace(s, "\n", `\n`, -1)
s = strings.Replace(s, "\r", "", -1)
s = strings.Replace(s, "\"", `\"`, -1)
s = strings.Replace(s, "<table>", "&lt;table>", -1)
return []byte(s)
}
// encode html chars to string
func HtmlEncode(str string) string {
return html.EscapeString(str)
}
// decode string to html chars
func HtmlDecode(str string) string {
return html.UnescapeString(str)
}
// strip tags in html string
func StripTags(src string) string {
//去除style,script,html tag
re := regexp.MustCompile(`(?s)<(?:style|script)[^<>]*>.*?</(?:style|script)>|</?[a-z][a-z0-9]*[^<>]*>|<!--.*?-->`)
src = re.ReplaceAllString(src, "")
//trim all spaces(2+) into \n
re = regexp.MustCompile(`\s{2,}`)
src = re.ReplaceAllString(src, "\n")
return strings.TrimSpace(src)
}
// change \n to <br/>
func Nl2br(str string) string {
return strings.Replace(str, "\n", "<br/>", -1)
}

201
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// Copyright 2013 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 (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"path"
)
type NotFoundError struct {
Message string
}
func (e NotFoundError) Error() string {
return e.Message
}
type RemoteError struct {
Host string
Err error
}
func (e *RemoteError) Error() string {
return e.Err.Error()
}
var UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1541.0 Safari/537.36"
// HttpCall makes HTTP method call.
func HttpCall(client *http.Client, method, url string, header http.Header, body io.Reader) (io.ReadCloser, error) {
req, err := http.NewRequest(method, url, body)
if err != nil {
return nil, err
}
req.Header.Set("User-Agent", UserAgent)
for k, vs := range header {
req.Header[k] = vs
}
resp, err := client.Do(req)
if err != nil {
return nil, err
}
if resp.StatusCode == 200 {
return resp.Body, nil
}
resp.Body.Close()
if resp.StatusCode == 404 { // 403 can be rate limit error. || resp.StatusCode == 403 {
err = fmt.Errorf("resource not found: %s", url)
} else {
err = fmt.Errorf("%s %s -> %d", method, url, resp.StatusCode)
}
return nil, err
}
// HttpGet gets the specified resource.
// ErrNotFound is returned if the server responds with status 404.
func HttpGet(client *http.Client, url string, header http.Header) (io.ReadCloser, error) {
return HttpCall(client, "GET", url, header, nil)
}
// HttpPost posts the specified resource.
// ErrNotFound is returned if the server responds with status 404.
func HttpPost(client *http.Client, url string, header http.Header, body []byte) (io.ReadCloser, error) {
return HttpCall(client, "POST", url, header, bytes.NewBuffer(body))
}
// HttpGetToFile gets the specified resource and writes to file.
// ErrNotFound is returned if the server responds with status 404.
func HttpGetToFile(client *http.Client, url string, header http.Header, fileName string) error {
rc, err := HttpGet(client, url, header)
if err != nil {
return err
}
defer rc.Close()
os.MkdirAll(path.Dir(fileName), os.ModePerm)
f, err := os.Create(fileName)
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(f, rc)
return err
}
// HttpGetBytes gets the specified resource. ErrNotFound is returned if the server
// responds with status 404.
func HttpGetBytes(client *http.Client, url string, header http.Header) ([]byte, error) {
rc, err := HttpGet(client, url, header)
if err != nil {
return nil, err
}
defer rc.Close()
return ioutil.ReadAll(rc)
}
// HttpGetJSON gets the specified resource and mapping to struct.
// ErrNotFound is returned if the server responds with status 404.
func HttpGetJSON(client *http.Client, url string, v interface{}) error {
rc, err := HttpGet(client, url, nil)
if err != nil {
return err
}
defer rc.Close()
err = json.NewDecoder(rc).Decode(v)
if _, ok := err.(*json.SyntaxError); ok {
return fmt.Errorf("JSON syntax error at %s", url)
}
return nil
}
// HttpPostJSON posts the specified resource with struct values,
// and maps results to struct.
// ErrNotFound is returned if the server responds with status 404.
func HttpPostJSON(client *http.Client, url string, body, v interface{}) error {
data, err := json.Marshal(body)
if err != nil {
return err
}
rc, err := HttpPost(client, url, http.Header{"content-type": []string{"application/json"}}, data)
if err != nil {
return err
}
defer rc.Close()
err = json.NewDecoder(rc).Decode(v)
if _, ok := err.(*json.SyntaxError); ok {
return fmt.Errorf("JSON syntax error at %s", url)
}
return nil
}
// A RawFile describes a file that can be downloaded.
type RawFile interface {
Name() string
RawUrl() string
Data() []byte
SetData([]byte)
}
// FetchFiles fetches files specified by the rawURL field in parallel.
func FetchFiles(client *http.Client, files []RawFile, header http.Header) error {
ch := make(chan error, len(files))
for i := range files {
go func(i int) {
p, err := HttpGetBytes(client, files[i].RawUrl(), nil)
if err != nil {
ch <- err
return
}
files[i].SetData(p)
ch <- nil
}(i)
}
for _ = range files {
if err := <-ch; err != nil {
return err
}
}
return nil
}
// FetchFiles uses command `curl` to fetch files specified by the rawURL field in parallel.
func FetchFilesCurl(files []RawFile, curlOptions ...string) error {
ch := make(chan error, len(files))
for i := range files {
go func(i int) {
stdout, _, err := ExecCmd("curl", append(curlOptions, files[i].RawUrl())...)
if err != nil {
ch <- err
return
}
files[i].SetData([]byte(stdout))
ch <- nil
}(i)
}
for _ = range files {
if err := <-ch; err != nil {
return err
}
}
return nil
}

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// 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
// PowInt is int type of math.Pow function.
func PowInt(x int, y int) int {
if y <= 0 {
return 1
} else {
if y % 2 == 0 {
sqrt := PowInt(x, y/2)
return sqrt * sqrt
} else {
return PowInt(x, y-1) * x
}
}
}

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// Copyright 2013 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 (
"errors"
"os"
"path/filepath"
"runtime"
"strings"
)
// GetGOPATHs returns all paths in GOPATH variable.
func GetGOPATHs() []string {
gopath := os.Getenv("GOPATH")
var paths []string
if runtime.GOOS == "windows" {
gopath = strings.Replace(gopath, "\\", "/", -1)
paths = strings.Split(gopath, ";")
} else {
paths = strings.Split(gopath, ":")
}
return paths
}
// GetSrcPath returns app. source code path.
// It only works when you have src. folder in GOPATH,
// it returns error not able to locate source folder path.
func GetSrcPath(importPath string) (appPath string, err error) {
paths := GetGOPATHs()
for _, p := range paths {
if IsExist(p + "/src/" + importPath + "/") {
appPath = p + "/src/" + importPath + "/"
break
}
}
if len(appPath) == 0 {
return "", errors.New("Unable to locate source folder path")
}
appPath = filepath.Dir(appPath) + "/"
if runtime.GOOS == "windows" {
// Replace all '\' to '/'.
appPath = strings.Replace(appPath, "\\", "/", -1)
}
return appPath, nil
}
// HomeDir returns path of '~'(in Linux) on Windows,
// it returns error when the variable does not exist.
func HomeDir() (home string, err error) {
if runtime.GOOS == "windows" {
home = os.Getenv("USERPROFILE")
if len(home) == 0 {
home = os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
}
} else {
home = os.Getenv("HOME")
}
if len(home) == 0 {
return "", errors.New("Cannot specify home directory because it's empty")
}
return home, nil
}

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// Copyright 2013 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 "regexp"
const (
regex_email_pattern = `(?i)[A-Z0-9._%+-]+@(?:[A-Z0-9-]+\.)+[A-Z]{2,6}`
regex_strict_email_pattern = `(?i)[A-Z0-9!#$%&'*+/=?^_{|}~-]+` +
`(?:\.[A-Z0-9!#$%&'*+/=?^_{|}~-]+)*` +
`@(?:[A-Z0-9](?:[A-Z0-9-]*[A-Z0-9])?\.)+` +
`[A-Z0-9](?:[A-Z0-9-]*[A-Z0-9])?`
regex_url_pattern = `(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?`
)
var (
regex_email *regexp.Regexp
regex_strict_email *regexp.Regexp
regex_url *regexp.Regexp
)
func init() {
regex_email = regexp.MustCompile(regex_email_pattern)
regex_strict_email = regexp.MustCompile(regex_strict_email_pattern)
regex_url = regexp.MustCompile(regex_url_pattern)
}
// validate string is an email address, if not return false
// basically validation can match 99% cases
func IsEmail(email string) bool {
return regex_email.MatchString(email)
}
// validate string is an email address, if not return false
// this validation omits RFC 2822
func IsEmailRFC(email string) bool {
return regex_strict_email.MatchString(email)
}
// validate string is a url link, if not return false
// simple validation can match 99% cases
func IsUrl(url string) bool {
return regex_url.MatchString(url)
}

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vendor/github.com/Unknwon/com/slice.go generated vendored Normal file
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// Copyright 2013 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 (
"strings"
)
// AppendStr appends string to slice with no duplicates.
func AppendStr(strs []string, str string) []string {
for _, s := range strs {
if s == str {
return strs
}
}
return append(strs, str)
}
// CompareSliceStr compares two 'string' type slices.
// It returns true if elements and order are both the same.
func CompareSliceStr(s1, s2 []string) bool {
if len(s1) != len(s2) {
return false
}
for i := range s1 {
if s1[i] != s2[i] {
return false
}
}
return true
}
// CompareSliceStr compares two 'string' type slices.
// It returns true if elements are the same, and ignores the order.
func CompareSliceStrU(s1, s2 []string) bool {
if len(s1) != len(s2) {
return false
}
for i := range s1 {
for j := len(s2) - 1; j >= 0; j-- {
if s1[i] == s2[j] {
s2 = append(s2[:j], s2[j+1:]...)
break
}
}
}
if len(s2) > 0 {
return false
}
return true
}
// IsSliceContainsStr returns true if the string exists in given slice, ignore case.
func IsSliceContainsStr(sl []string, str string) bool {
str = strings.ToLower(str)
for _, s := range sl {
if strings.ToLower(s) == str {
return true
}
}
return false
}
// IsSliceContainsInt64 returns true if the int64 exists in given slice.
func IsSliceContainsInt64(sl []int64, i int64) bool {
for _, s := range sl {
if s == i {
return true
}
}
return false
}

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// Copyright 2013 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 (
"bytes"
"crypto/aes"
"crypto/cipher"
"crypto/rand"
"encoding/base64"
"errors"
"io"
r "math/rand"
"strconv"
"strings"
"time"
"unicode"
"unicode/utf8"
)
// AESEncrypt encrypts text and given key with AES.
func AESEncrypt(key, text []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
b := base64.StdEncoding.EncodeToString(text)
ciphertext := make([]byte, aes.BlockSize+len(b))
iv := ciphertext[:aes.BlockSize]
if _, err := io.ReadFull(rand.Reader, iv); err != nil {
return nil, err
}
cfb := cipher.NewCFBEncrypter(block, iv)
cfb.XORKeyStream(ciphertext[aes.BlockSize:], []byte(b))
return ciphertext, nil
}
// AESDecrypt decrypts text and given key with AES.
func AESDecrypt(key, text []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
if len(text) < aes.BlockSize {
return nil, errors.New("ciphertext too short")
}
iv := text[:aes.BlockSize]
text = text[aes.BlockSize:]
cfb := cipher.NewCFBDecrypter(block, iv)
cfb.XORKeyStream(text, text)
data, err := base64.StdEncoding.DecodeString(string(text))
if err != nil {
return nil, err
}
return data, nil
}
// IsLetter returns true if the 'l' is an English letter.
func IsLetter(l uint8) bool {
n := (l | 0x20) - 'a'
if n >= 0 && n < 26 {
return true
}
return false
}
// Expand replaces {k} in template with match[k] or subs[atoi(k)] if k is not in match.
func Expand(template string, match map[string]string, subs ...string) string {
var p []byte
var i int
for {
i = strings.Index(template, "{")
if i < 0 {
break
}
p = append(p, template[:i]...)
template = template[i+1:]
i = strings.Index(template, "}")
if s, ok := match[template[:i]]; ok {
p = append(p, s...)
} else {
j, _ := strconv.Atoi(template[:i])
if j >= len(subs) {
p = append(p, []byte("Missing")...)
} else {
p = append(p, subs[j]...)
}
}
template = template[i+1:]
}
p = append(p, template...)
return string(p)
}
// Reverse s string, support unicode
func Reverse(s string) string {
n := len(s)
runes := make([]rune, n)
for _, rune := range s {
n--
runes[n] = rune
}
return string(runes[n:])
}
// RandomCreateBytes generate random []byte by specify chars.
func RandomCreateBytes(n int, alphabets ...byte) []byte {
const alphanum = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
var bytes = make([]byte, n)
var randby bool
if num, err := rand.Read(bytes); num != n || err != nil {
r.Seed(time.Now().UnixNano())
randby = true
}
for i, b := range bytes {
if len(alphabets) == 0 {
if randby {
bytes[i] = alphanum[r.Intn(len(alphanum))]
} else {
bytes[i] = alphanum[b%byte(len(alphanum))]
}
} else {
if randby {
bytes[i] = alphabets[r.Intn(len(alphabets))]
} else {
bytes[i] = alphabets[b%byte(len(alphabets))]
}
}
}
return bytes
}
// ToSnakeCase can convert all upper case characters in a string to
// underscore format.
//
// Some samples.
// "FirstName" => "first_name"
// "HTTPServer" => "http_server"
// "NoHTTPS" => "no_https"
// "GO_PATH" => "go_path"
// "GO PATH" => "go_path" // space is converted to underscore.
// "GO-PATH" => "go_path" // hyphen is converted to underscore.
//
// From https://github.com/huandu/xstrings
func ToSnakeCase(str string) string {
if len(str) == 0 {
return ""
}
buf := &bytes.Buffer{}
var prev, r0, r1 rune
var size int
r0 = '_'
for len(str) > 0 {
prev = r0
r0, size = utf8.DecodeRuneInString(str)
str = str[size:]
switch {
case r0 == utf8.RuneError:
buf.WriteByte(byte(str[0]))
case unicode.IsUpper(r0):
if prev != '_' {
buf.WriteRune('_')
}
buf.WriteRune(unicode.ToLower(r0))
if len(str) == 0 {
break
}
r0, size = utf8.DecodeRuneInString(str)
str = str[size:]
if !unicode.IsUpper(r0) {
buf.WriteRune(r0)
break
}
// find next non-upper-case character and insert `_` properly.
// it's designed to convert `HTTPServer` to `http_server`.
// if there are more than 2 adjacent upper case characters in a word,
// treat them as an abbreviation plus a normal word.
for len(str) > 0 {
r1 = r0
r0, size = utf8.DecodeRuneInString(str)
str = str[size:]
if r0 == utf8.RuneError {
buf.WriteRune(unicode.ToLower(r1))
buf.WriteByte(byte(str[0]))
break
}
if !unicode.IsUpper(r0) {
if r0 == '_' || r0 == ' ' || r0 == '-' {
r0 = '_'
buf.WriteRune(unicode.ToLower(r1))
} else {
buf.WriteRune('_')
buf.WriteRune(unicode.ToLower(r1))
buf.WriteRune(r0)
}
break
}
buf.WriteRune(unicode.ToLower(r1))
}
if len(str) == 0 || r0 == '_' {
buf.WriteRune(unicode.ToLower(r0))
break
}
default:
if r0 == ' ' || r0 == '-' {
r0 = '_'
}
buf.WriteRune(r0)
}
}
return buf.String()
}

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// Copyright 2013 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"
"strings"
"time"
)
// Format unix time int64 to string
func Date(ti int64, format string) string {
t := time.Unix(int64(ti), 0)
return DateT(t, format)
}
// Format unix time string to string
func DateS(ts string, format string) string {
i, _ := strconv.ParseInt(ts, 10, 64)
return Date(i, format)
}
// Format time.Time struct to string
// MM - month - 01
// M - month - 1, single bit
// DD - day - 02
// D - day 2
// YYYY - year - 2006
// YY - year - 06
// HH - 24 hours - 03
// H - 24 hours - 3
// hh - 12 hours - 03
// h - 12 hours - 3
// mm - minute - 04
// m - minute - 4
// ss - second - 05
// s - second = 5
func DateT(t time.Time, format string) string {
res := strings.Replace(format, "MM", t.Format("01"), -1)
res = strings.Replace(res, "M", t.Format("1"), -1)
res = strings.Replace(res, "DD", t.Format("02"), -1)
res = strings.Replace(res, "D", t.Format("2"), -1)
res = strings.Replace(res, "YYYY", t.Format("2006"), -1)
res = strings.Replace(res, "YY", t.Format("06"), -1)
res = strings.Replace(res, "HH", fmt.Sprintf("%02d", t.Hour()), -1)
res = strings.Replace(res, "H", fmt.Sprintf("%d", t.Hour()), -1)
res = strings.Replace(res, "hh", t.Format("03"), -1)
res = strings.Replace(res, "h", t.Format("3"), -1)
res = strings.Replace(res, "mm", t.Format("04"), -1)
res = strings.Replace(res, "m", t.Format("4"), -1)
res = strings.Replace(res, "ss", t.Format("05"), -1)
res = strings.Replace(res, "s", t.Format("5"), -1)
return res
}
// DateFormat pattern rules.
var datePatterns = []string{
// year
"Y", "2006", // A full numeric representation of a year, 4 digits Examples: 1999 or 2003
"y", "06", //A two digit representation of a year Examples: 99 or 03
// month
"m", "01", // Numeric representation of a month, with leading zeros 01 through 12
"n", "1", // Numeric representation of a month, without leading zeros 1 through 12
"M", "Jan", // A short textual representation of a month, three letters Jan through Dec
"F", "January", // A full textual representation of a month, such as January or March January through December
// day
"d", "02", // Day of the month, 2 digits with leading zeros 01 to 31
"j", "2", // Day of the month without leading zeros 1 to 31
// week
"D", "Mon", // A textual representation of a day, three letters Mon through Sun
"l", "Monday", // A full textual representation of the day of the week Sunday through Saturday
// time
"g", "3", // 12-hour format of an hour without leading zeros 1 through 12
"G", "15", // 24-hour format of an hour without leading zeros 0 through 23
"h", "03", // 12-hour format of an hour with leading zeros 01 through 12
"H", "15", // 24-hour format of an hour with leading zeros 00 through 23
"a", "pm", // Lowercase Ante meridiem and Post meridiem am or pm
"A", "PM", // Uppercase Ante meridiem and Post meridiem AM or PM
"i", "04", // Minutes with leading zeros 00 to 59
"s", "05", // Seconds, with leading zeros 00 through 59
// time zone
"T", "MST",
"P", "-07:00",
"O", "-0700",
// RFC 2822
"r", time.RFC1123Z,
}
// Parse Date use PHP time format.
func DateParse(dateString, format string) (time.Time, error) {
replacer := strings.NewReplacer(datePatterns...)
format = replacer.Replace(format)
return time.ParseInLocation(format, dateString, time.Local)
}

41
vendor/github.com/Unknwon/com/url.go generated vendored Normal file
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@ -0,0 +1,41 @@
// Copyright 2013 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 (
"encoding/base64"
"net/url"
)
// url encode string, is + not %20
func UrlEncode(str string) string {
return url.QueryEscape(str)
}
// url decode string
func UrlDecode(str string) (string, error) {
return url.QueryUnescape(str)
}
// base64 encode
func Base64Encode(str string) string {
return base64.StdEncoding.EncodeToString([]byte(str))
}
// base64 decode
func Base64Decode(str string) (string, error) {
s, e := base64.StdEncoding.DecodeString(str)
return string(s), e
}