完成基础版GIF生成,待调优

2021-11-29 15:30:06 +08:00
15 changed files with 263 additions and 678 deletions
--- a/demo/context.go
+++ b/demo/context.go
@ -1,586 +0,0 @@
 // Package demo ...
 //
 // Description : demo ...
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2021-12-02 12:43 下午
 package demo
 import (
 	"errors"
 	"reflect"
 	"sync"
 	"sync/atomic"
 	"time"
 )
 // Copyright 2014 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 // Package context defines the Context type, which carries deadlines,
 // cancellation signals, and other request-scoped values across API boundaries
 // and between processes.
 //
 // Incoming requests to a server should create a Context, and outgoing
 // calls to servers should accept a Context. The chain of function
 // calls between them must propagate the Context, optionally replacing
 // it with a derived Context created using WithCancel, WithDeadline,
 // WithTimeout, or WithValue. When a Context is canceled, all
 // Contexts derived from it are also canceled.
 //
 // The WithCancel, WithDeadline, and WithTimeout functions take a
 // Context (the parent) and return a derived Context (the child) and a
 // CancelFunc. Calling the CancelFunc cancels the child and its
 // children, removes the parent's reference to the child, and stops
 // any associated timers. Failing to call the CancelFunc leaks the
 // child and its children until the parent is canceled or the timer
 // fires. The go vet tool checks that CancelFuncs are used on all
 // control-flow paths.
 //
 // Programs that use Contexts should follow these rules to keep interfaces
 // consistent across packages and enable static analysis tools to check context
 // propagation:
 //
 // Do not store Contexts inside a struct type; instead, pass a Context
 // explicitly to each function that needs it. The Context should be the first
 // parameter, typically named ctx:
 //
 // 	func DoSomething(ctx context.Context, arg Arg) error {
 // 		// ... use ctx ...
 // 	}
 //
 // Do not pass a nil Context, even if a function permits it. Pass context.TODO
 // if you are unsure about which Context to use.
 //
 // Use context Values only for request-scoped data that transits processes and
 // APIs, not for passing optional parameters to functions.
 //
 // The same Context may be passed to functions running in different goroutines;
 // Contexts are safe for simultaneous use by multiple goroutines.
 //
 // See https://blog.golang.org/context for example code for a server that uses
 // Contexts.
 // A Context carries a deadline, a cancellation signal, and other values across
 // API boundaries.
 //
 // Context's methods may be called by multiple goroutines simultaneously.
 type Context interface {
 	// Deadline returns the time when work done on behalf of this context
 	// should be canceled. Deadline returns ok==false when no deadline is
 	// set. Successive calls to Deadline return the same results.
 	Deadline() (deadline time.Time, ok bool)
 	// Done returns a channel that's closed when work done on behalf of this
 	// context should be canceled. Done may return nil if this context can
 	// never be canceled. Successive calls to Done return the same value.
 	// The close of the Done channel may happen asynchronously,
 	// after the cancel function returns.
 	//
 	// WithCancel arranges for Done to be closed when cancel is called;
 	// WithDeadline arranges for Done to be closed when the deadline
 	// expires; WithTimeout arranges for Done to be closed when the timeout
 	// elapses.
 	//
 	// Done is provided for use in select statements:
 	//
 	//  // Stream generates values with DoSomething and sends them to out
 	//  // until DoSomething returns an error or ctx.Done is closed.
 	//  func Stream(ctx context.Context, out chan<- Value) error {
 	//  	for {
 	//  		v, err := DoSomething(ctx)
 	//  		if err != nil {
 	//  			return err
 	//  		}
 	//  		select {
 	//  		case <-ctx.Done():
 	//  			return ctx.Err()
 	//  		case out <- v:
 	//  		}
 	//  	}
 	//  }
 	//
 	// See https://blog.golang.org/pipelines for more examples of how to use
 	// a Done channel for cancellation.
 	Done() <-chan struct{}
 	// If Done is not yet closed, Err returns nil.
 	// If Done is closed, Err returns a non-nil error explaining why:
 	// Canceled if the context was canceled
 	// or DeadlineExceeded if the context's deadline passed.
 	// After Err returns a non-nil error, successive calls to Err return the same error.
 	Err() error
 	// Value returns the value associated with this context for key, or nil
 	// if no value is associated with key. Successive calls to Value with
 	// the same key returns the same result.
 	//
 	// Use context values only for request-scoped data that transits
 	// processes and API boundaries, not for passing optional parameters to
 	// functions.
 	//
 	// A key identifies a specific value in a Context. Functions that wish
 	// to store values in Context typically allocate a key in a global
 	// variable then use that key as the argument to context.WithValue and
 	// Context.Value. A key can be any type that supports equality;
 	// packages should define keys as an unexported type to avoid
 	// collisions.
 	//
 	// Packages that define a Context key should provide type-safe accessors
 	// for the values stored using that key:
 	//
 	// 	// Package user defines a User type that's stored in Contexts.
 	// 	package user
 	//
 	// 	import "context"
 	//
 	// 	// User is the type of value stored in the Contexts.
 	// 	type User struct {...}
 	//
 	// 	// key is an unexported type for keys defined in this package.
 	// 	// This prevents collisions with keys defined in other packages.
 	// 	type key int
 	//
 	// 	// userKey is the key for user.User values in Contexts. It is
 	// 	// unexported; clients use user.NewContext and user.FromContext
 	// 	// instead of using this key directly.
 	// 	var userKey key
 	//
 	// 	// NewContext returns a new Context that carries value u.
 	// 	func NewContext(ctx context.Context, u *User) context.Context {
 	// 		return context.WithValue(ctx, userKey, u)
 	// 	}
 	//
 	// 	// FromContext returns the User value stored in ctx, if any.
 	// 	func FromContext(ctx context.Context) (*User, bool) {
 	// 		u, ok := ctx.Value(userKey).(*User)
 	// 		return u, ok
 	// 	}
 	Value(key interface{}) interface{}
 }
 // Canceled is the error returned by Context.Err when the context is canceled.
 var Canceled = errors.New("context canceled")
 // DeadlineExceeded is the error returned by Context.Err when the context's
 // deadline passes.
 var DeadlineExceeded error = deadlineExceededError{}
 type deadlineExceededError struct{}
 func (deadlineExceededError) Error() string   { return "context deadline exceeded" }
 func (deadlineExceededError) Timeout() bool   { return true }
 func (deadlineExceededError) Temporary() bool { return true }
 // An emptyCtx is never canceled, has no values, and has no deadline. It is not
 // struct{}, since vars of this type must have distinct addresses.
 type emptyCtx int
 func (*emptyCtx) Deadline() (deadline time.Time, ok bool) {
 	return
 }
 func (*emptyCtx) Done() <-chan struct{} {
 	return nil
 }
 func (*emptyCtx) Err() error {
 	return nil
 }
 func (*emptyCtx) Value(key interface{}) interface{} {
 	return nil
 }
 func (e *emptyCtx) String() string {
 	switch e {
 	case background:
 		return "context.Background"
 	case todo:
 		return "context.TODO"
 	}
 	return "unknown empty Context"
 }
 var (
 	background = new(emptyCtx)
 	todo       = new(emptyCtx)
 )
 // Background returns a non-nil, empty Context. It is never canceled, has no
 // values, and has no deadline. It is typically used by the main function,
 // initialization, and tests, and as the top-level Context for incoming
 // requests.
 func Background() Context {
 	return background
 }
 // TODO returns a non-nil, empty Context. Code should use context.TODO when
 // it's unclear which Context to use or it is not yet available (because the
 // surrounding function has not yet been extended to accept a Context
 // parameter).
 func TODO() Context {
 	return todo
 }
 // A CancelFunc tells an operation to abandon its work.
 // A CancelFunc does not wait for the work to stop.
 // A CancelFunc may be called by multiple goroutines simultaneously.
 // After the first call, subsequent calls to a CancelFunc do nothing.
 type CancelFunc func()
 // WithCancel returns a copy of parent with a new Done channel. The returned
 // context's Done channel is closed when the returned cancel function is called
 // or when the parent context's Done channel is closed, whichever happens first.
 //
 // Canceling this context releases resources associated with it, so code should
 // call cancel as soon as the operations running in this Context complete.
 func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
 	if parent == nil {
 		panic("cannot create context from nil parent")
 	}
 	c := newCancelCtx(parent)
 	propagateCancel(parent, &c)
 	return &c, func() { c.cancel(true, Canceled) }
 }
 // newCancelCtx returns an initialized cancelCtx.
 func newCancelCtx(parent Context) cancelCtx {
 	return cancelCtx{Context: parent}
 }
 // goroutines counts the number of goroutines ever created; for testing.
 var goroutines int32
 // propagateCancel arranges for child to be canceled when parent is.
 func propagateCancel(parent Context, child canceler) {
 	done := parent.Done()
 	if done == nil {
 		return // parent is never canceled
 	}
 	select {
 	case <-done:
 		// parent is already canceled
 		child.cancel(false, parent.Err())
 		return
 	default:
 	}
 	if p, ok := parentCancelCtx(parent); ok {
 		p.mu.Lock()
 		if p.err != nil {
 			// parent has already been canceled
 			child.cancel(false, p.err)
 		} else {
 			if p.children == nil {
 				p.children = make(map[canceler]struct{})
 			}
 			p.children[child] = struct{}{}
 		}
 		p.mu.Unlock()
 	} else {
 		atomic.AddInt32(&goroutines, +1)
 		go func() {
 			select {
 			case <-parent.Done():
 				child.cancel(false, parent.Err())
 			case <-child.Done():
 			}
 		}()
 	}
 }
 // &cancelCtxKey is the key that a cancelCtx returns itself for.
 var cancelCtxKey int
 // parentCancelCtx returns the underlying *cancelCtx for parent.
 // It does this by looking up parent.Value(&cancelCtxKey) to find
 // the innermost enclosing *cancelCtx and then checking whether
 // parent.Done() matches that *cancelCtx. (If not, the *cancelCtx
 // has been wrapped in a custom implementation providing a
 // different done channel, in which case we should not bypass it.)
 func parentCancelCtx(parent Context) (*cancelCtx, bool) {
 	done := parent.Done()
 	if done == closedchan || done == nil {
 		return nil, false
 	}
 	p, ok := parent.Value(&cancelCtxKey).(*cancelCtx)
 	if !ok {
 		return nil, false
 	}
 	pdone, _ := p.done.Load().(chan struct{})
 	if pdone != done {
 		return nil, false
 	}
 	return p, true
 }
 // removeChild removes a context from its parent.
 func removeChild(parent Context, child canceler) {
 	p, ok := parentCancelCtx(parent)
 	if !ok {
 		return
 	}
 	p.mu.Lock()
 	if p.children != nil {
 		delete(p.children, child)
 	}
 	p.mu.Unlock()
 }
 // A canceler is a context type that can be canceled directly. The
 // implementations are *cancelCtx and *timerCtx.
 type canceler interface {
 	cancel(removeFromParent bool, err error)
 	Done() <-chan struct{}
 }
 // closedchan is a reusable closed channel.
 var closedchan = make(chan struct{})
 func init() {
 	close(closedchan)
 }
 // A cancelCtx can be canceled. When canceled, it also cancels any children
 // that implement canceler.
 type cancelCtx struct {
 	Context
 	mu       sync.Mutex            // protects following fields
 	done     atomic.Value          // of chan struct{}, created lazily, closed by first cancel call
 	children map[canceler]struct{} // set to nil by the first cancel call
 	err      error                 // set to non-nil by the first cancel call
 }
 func (c *cancelCtx) Value(key interface{}) interface{} {
 	if key == &cancelCtxKey {
 		return c
 	}
 	return c.Context.Value(key)
 }
 func (c *cancelCtx) Done() <-chan struct{} {
 	d := c.done.Load()
 	if d != nil {
 		return d.(chan struct{})
 	}
 	c.mu.Lock()
 	defer c.mu.Unlock()
 	d = c.done.Load()
 	if d == nil {
 		d = make(chan struct{})
 		c.done.Store(d)
 	}
 	return d.(chan struct{})
 }
 func (c *cancelCtx) Err() error {
 	c.mu.Lock()
 	err := c.err
 	c.mu.Unlock()
 	return err
 }
 type stringer interface {
 	String() string
 }
 func contextName(c Context) string {
 	if s, ok := c.(stringer); ok {
 		return s.String()
 	}
 	return reflect.TypeOf(c).String()
 }
 func (c *cancelCtx) String() string {
 	return contextName(c.Context) + ".WithCancel"
 }
 // cancel closes c.done, cancels each of c's children, and, if
 // removeFromParent is true, removes c from its parent's children.
 func (c *cancelCtx) cancel(removeFromParent bool, err error) {
 	if err == nil {
 		panic("context: internal error: missing cancel error")
 	}
 	c.mu.Lock()
 	if c.err != nil {
 		c.mu.Unlock()
 		return // already canceled
 	}
 	c.err = err
 	d, _ := c.done.Load().(chan struct{})
 	if d == nil {
 		c.done.Store(closedchan)
 	} else {
 		close(d)
 	}
 	for child := range c.children {
 		// NOTE: acquiring the child's lock while holding parent's lock.
 		child.cancel(false, err)
 	}
 	c.children = nil
 	c.mu.Unlock()
 	if removeFromParent {
 		removeChild(c.Context, c)
 	}
 }
 // WithDeadline returns a copy of the parent context with the deadline adjusted
 // to be no later than d. If the parent's deadline is already earlier than d,
 // WithDeadline(parent, d) is semantically equivalent to parent. The returned
 // context's Done channel is closed when the deadline expires, when the returned
 // cancel function is called, or when the parent context's Done channel is
 // closed, whichever happens first.
 //
 // Canceling this context releases resources associated with it, so code should
 // call cancel as soon as the operations running in this Context complete.
 func WithDeadline(parent Context, d time.Time) (Context, CancelFunc) {
 	if parent == nil {
 		panic("cannot create context from nil parent")
 	}
 	if cur, ok := parent.Deadline(); ok && cur.Before(d) {
 		// The current deadline is already sooner than the new one.
 		return WithCancel(parent)
 	}
 	c := &timerCtx{
 		cancelCtx: newCancelCtx(parent),
 		deadline:  d,
 	}
 	propagateCancel(parent, c)
 	dur := time.Until(d)
 	if dur <= 0 {
 		c.cancel(true, DeadlineExceeded) // deadline has already passed
 		return c, func() { c.cancel(false, Canceled) }
 	}
 	c.mu.Lock()
 	defer c.mu.Unlock()
 	if c.err == nil {
 		c.timer = time.AfterFunc(dur, func() {
 			c.cancel(true, DeadlineExceeded)
 		})
 	}
 	return c, func() { c.cancel(true, Canceled) }
 }
 // A timerCtx carries a timer and a deadline. It embeds a cancelCtx to
 // implement Done and Err. It implements cancel by stopping its timer then
 // delegating to cancelCtx.cancel.
 type timerCtx struct {
 	cancelCtx
 	timer *time.Timer // Under cancelCtx.mu.
 	deadline time.Time
 }
 func (c *timerCtx) Deadline() (deadline time.Time, ok bool) {
 	return c.deadline, true
 }
 func (c *timerCtx) String() string {
 	return contextName(c.cancelCtx.Context) + ".WithDeadline(" +
 		c.deadline.String() + " [" +
 		time.Until(c.deadline).String() + "])"
 }
 func (c *timerCtx) cancel(removeFromParent bool, err error) {
 	c.cancelCtx.cancel(false, err)
 	if removeFromParent {
 		// Remove this timerCtx from its parent cancelCtx's children.
 		removeChild(c.cancelCtx.Context, c)
 	}
 	c.mu.Lock()
 	if c.timer != nil {
 		c.timer.Stop()
 		c.timer = nil
 	}
 	c.mu.Unlock()
 }
 // WithTimeout returns WithDeadline(parent, time.Now().Add(timeout)).
 //
 // Canceling this context releases resources associated with it, so code should
 // call cancel as soon as the operations running in this Context complete:
 //
 // 	func slowOperationWithTimeout(ctx context.Context) (Result, error) {
 // 		ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
 // 		defer cancel()  // releases resources if slowOperation completes before timeout elapses
 // 		return slowOperation(ctx)
 // 	}
 func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
 	return WithDeadline(parent, time.Now().Add(timeout))
 }
 // WithValue returns a copy of parent in which the value associated with key is
 // val.
 //
 // Use context Values only for request-scoped data that transits processes and
 // APIs, not for passing optional parameters to functions.
 //
 // The provided key must be comparable and should not be of type
 // string or any other built-in type to avoid collisions between
 // packages using context. Users of WithValue should define their own
 // types for keys. To avoid allocating when assigning to an
 // interface{}, context keys often have concrete type
 // struct{}. Alternatively, exported context key variables' static
 // type should be a pointer or interface.
 func WithValue(parent Context, key, val interface{}) Context {
 	if parent == nil {
 		panic("cannot create context from nil parent")
 	}
 	if key == nil {
 		panic("nil key")
 	}
 	if !reflect.TypeOf(key).Comparable() {
 		panic("key is not comparable")
 	}
 	return &valueCtx{parent, key, val}
 }
 // A valueCtx carries a key-value pair. It implements Value for that key and
 // delegates all other calls to the embedded Context.
 type valueCtx struct {
 	Context
 	key, val interface{}
 }
 // stringify tries a bit to stringify v, without using fmt, since we don't
 // want context depending on the unicode tables. This is only used by
 // *valueCtx.String().
 func stringify(v interface{}) string {
 	switch s := v.(type) {
 	case stringer:
 		return s.String()
 	case string:
 		return s
 	}
 	return "<not Stringer>"
 }
 func (c *valueCtx) String() string {
 	return contextName(c.Context) + ".WithValue(type " +
 		reflect.TypeOf(c.key).String() +
 		", val " + stringify(c.val) + ")"
 }
 func (c *valueCtx) Value(key interface{}) interface{} {
 	if c.key == key {
 		return c.val
 	}
 	return c.Context.Value(key)
 }
 // ======================== 以上为 context.go 源码
 // MyContext 自定义 context
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 12:45 下午 2021/12/2
 type MyContext struct {
 	Context
 }
--- a/demo/context_test.go
+++ b/demo/context_test.go
@ -1,42 +0,0 @@
 // Package demo ...
 //
 // Description : demo ...
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2021-12-02 12:46 下午
 package demo
 import (
 	"fmt"
 	"reflect"
 	"testing"
 	"time"
 )
 // TestCancelCtx_UDC 测试自定义context
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 12:46 下午 2021/12/2
 func TestCancelCtx_UDC(t *testing.T) {
 	childCancel := true
 	parentCtx, parentFunc := WithCancel(Background())
 	mctx := MyContext{parentCtx}
 	childCtx, childFun := WithCancel(mctx)
 	if childCancel {
 		childFun()
 	} else {
 		parentFunc()
 	}
 	fmt.Println("parent context => ", parentCtx, reflect.TypeOf(parentCtx).String())
 	fmt.Println("my context => ", mctx, reflect.TypeOf(mctx).String())
 	fmt.Println("child context => ", childCtx, reflect.TypeOf(childCtx).String())
 	// 防止主协程退出太快，子协程来不及打印
 	time.Sleep(5 * time.Second)
 }
--- a/gin/static/define.go
+++ b/gin/static/define.go
@ -1,18 +0,0 @@
 // Package static ...
 //
 // Description : static
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2021/12/24 2:18 PM
 package static
 // MapRule 定义映射规则
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2:18 PM 2021/12/24
 type MapRule struct {
 	URIPrefix     string `json:"uri_prefix"`      // 路由前缀
 	StaticDirPath string `json:"static_dir_path"` // 静态资源路由
 }
--- a/gin/static/static.go
+++ b/gin/static/static.go
@ -1,25 +0,0 @@
 // Package static ...
 //
 // Description : 启动静态资源服务器
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2021/12/24 2:14 PM
 package static
 import (
 	"net/http"
 	"github.com/gin-gonic/gin"
 )
 // Register 静态资源服务器
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2:17 PM 2021/12/24
 func Register(router *gin.Engine, ruleList []*MapRule) {
 	for _, rule := range ruleList {
 		router.StaticFS(rule.URIPrefix, http.Dir(rule.StaticDirPath))
 	}
 }
--- a/go.mod
+++ b/go.mod
@ -27,7 +27,7 @@ require (
 	gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
 	gopkg.in/yaml.v2 v2.4.0
 	gorm.io/driver/mysql v1.2.0
-	gorm.io/gorm v1.22.4
+	gorm.io/gorm v1.22.3
 )
 require (
@ -68,7 +68,7 @@ require (
 	github.com/jcmturner/gokrb5/v8 v8.4.2 // indirect
 	github.com/jcmturner/rpc/v2 v2.0.3 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
-	github.com/jinzhu/now v1.1.4 // indirect
+	github.com/jinzhu/now v1.1.2 // indirect
 	github.com/jonboulle/clockwork v0.2.2 // indirect
 	github.com/json-iterator/go v1.1.11 // indirect
 	github.com/klauspost/compress v1.13.6 // indirect
--- a/go.sum
+++ b/go.sum
@ -294,9 +294,6 @@ github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD
 github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
 github.com/jinzhu/now v1.1.2 h1:eVKgfIdy9b6zbWBMgFpfDPoAMifwSZagU9HmEU6zgiI=
 github.com/jinzhu/now v1.1.2/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
 github.com/jinzhu/now v1.1.3/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
 github.com/jinzhu/now v1.1.4 h1:tHnRBy1i5F2Dh8BAFxqFzxKqqvezXrL2OW1TnX+Mlas=
 github.com/jinzhu/now v1.1.4/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
 github.com/jonboulle/clockwork v0.2.2 h1:UOGuzwb1PwsrDAObMuhUnj0p5ULPj8V/xJ7Kx9qUBdQ=
 github.com/jonboulle/clockwork v0.2.2/go.mod h1:Pkfl5aHPm1nk2H9h0bjmnJD/BcgbGXUBGnn1kMkgxc8=
 github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
@ -936,8 +933,6 @@ gorm.io/driver/mysql v1.2.0 h1:l8+9VwjjyzEkw0PNPBOr2JHhLOGVk7XEnl5hk42bcvs=
 gorm.io/driver/mysql v1.2.0/go.mod h1:4RQmTg4okPghdt+kbe6e1bTXIQp7Ny1NnBn/3Z6ghjk=
 gorm.io/gorm v1.22.3 h1:/JS6z+GStEQvJNW3t1FTwJwG/gZ+A7crFdRqtvG5ehA=
 gorm.io/gorm v1.22.3/go.mod h1:F+OptMscr0P2F2qU97WT1WimdH9GaQPoDW7AYd5i2Y0=
 gorm.io/gorm v1.22.4 h1:8aPcyEJhY0MAt8aY6Dc524Pn+pO29K+ydu+e/cXSpQM=
 gorm.io/gorm v1.22.4/go.mod h1:1aeVC+pe9ZmvKZban/gW4QPra7PRoTEssyc922qCAkk=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
--- a/image/define.go
+++ b/image/define.go
@ -0,0 +1,29 @@
 // Package image ...
 //
 // Description : image ...
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2021-11-29 2:27 下午
 package image
 const (
 	// TypeGIF ...
 	TypeGIF = "gif"
 	// TypePNG ...
 	TypePNG = "png"
 	// TypeJPG ...
 	TypeJPG = "jpg"
 	// TypeJPEG ...
 	TypeJPEG = "jpeg"
 )
 // ImgInfo ...
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2:45 下午 2021/11/29
 type ImgInfo struct {
 	Path string
 	Type string
 }
--- a/image/gif.go
+++ b/image/gif.go
@ -0,0 +1,195 @@
 // Package image ...
 //
 // Description : GIF相关操作
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2021-11-29 12:43 下午
 package image
 import (
 	"errors"
 	"image"
 	"image/color"
 	"image/color/palette"
 	"image/draw"
 	"image/gif"
 	"image/jpeg"
 	"image/png"
 	"os"
 	"git.zhangdeman.cn/zhangdeman/gopkg/util"
 )
 var (
 	// GIF ...
 	GIF *GIFConvert
 )
 func init() {
 	GIF = &GIFConvert{}
 }
 // GIFConvert gif转换
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 12:44 下午 2021/11/29
 type GIFConvert struct {
 }
 // Generate 生成
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2:13 下午 2021/11/29
 func (g *GIFConvert) Generate(sourceImageList []string, savePath string) error {
 	if len(sourceImageList) == 0 {
 		return errors.New("source image list is empty")
 	}
 	var (
 		err           error
 		formatImgList []ImgInfo
 		disposals     []byte
 		images        []*image.Paletted
 		// 播放速度设置 , 100 次多少秒
 		delays []int
 	)
 	if formatImgList, err = g.checkImageType(sourceImageList); nil != err {
 		return err
 	}
 	for _, imgInfo := range formatImgList {
 		img, gErr := g.loadImage(imgInfo)
 		if nil != gErr {
 			return gErr
 		}
 		cp := g.getPalette(img)
 		//cp:=append(palette.WebSafe,color.Transparent)
 		disposals = append(disposals, gif.DisposalBackground) //透明图片需要设置
 		p := image.NewPaletted(image.Rect(0, 0, 640, 996), cp)
 		draw.Draw(p, p.Bounds(), img, image.ZP, draw.Src)
 		images = append(images, p)
 		delays = append(delays, 100)
 	}
 	gifInstance := &gif.GIF{
 		Image:     images,
 		Delay:     delays,
 		LoopCount: -1,
 		Disposal:  disposals,
 	}
 	f, fErr := os.Create(savePath)
 	if fErr != nil {
 		return fErr
 	}
 	defer func() { _ = f.Close() }()
 	return gif.EncodeAll(f, gifInstance)
 }
 // checkImageType 检测图片类型
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2:16 下午 2021/11/29
 func (g *GIFConvert) checkImageType(sourceImageList []string) ([]ImgInfo, error) {
 	result := make([]ImgInfo, 0)
 	for _, item := range sourceImageList {
 		imgType := util.GetFileType(item)
 		if len(imgType) == 0 {
 			return result, errors.New(item + " parse img type fail!")
 		}
 		result = append(result, ImgInfo{
 			Path: item,
 			Type: imgType,
 		})
 	}
 	return result, nil
 }
 // loadImage 加载图片内容
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2:52 下午 2021/11/29
 func (g *GIFConvert) loadImage(imgInfo ImgInfo) (image.Image, error) {
 	var (
 		err error
 		f   *os.File
 	)
 	if f, err = os.Open(imgInfo.Path); nil != err {
 		return nil, err
 	}
 	defer func() {
 		_ = f.Close()
 	}()
 	switch imgInfo.Type {
 	case TypePNG:
 		if img, imgErr := png.Decode(f); nil != err {
 			return nil, imgErr
 		} else {
 			return img, nil
 		}
 	case TypeJPEG:
 		fallthrough
 	case TypeJPG:
 		if img, imgErr := jpeg.Decode(f); nil != err {
 			return nil, imgErr
 		} else {
 			return img, nil
 		}
 	case TypeGIF:
 		if img, imgErr := gif.Decode(f); nil != err {
 			return nil, imgErr
 		} else {
 			return img, nil
 		}
 	default:
 		return nil, errors.New(imgInfo.Type + " is not support!")
 	}
 }
 // getPalette ...
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 3:01 下午 2021/11/29
 func (g *GIFConvert) getPalette(m image.Image) color.Palette {
 	p := color.Palette{color.RGBA{0x00, 0x00, 0x00, 0x00}}
 	p9 := color.Palette(palette.Plan9)
 	b := m.Bounds()
 	black := false
 	for y := b.Min.Y; y < b.Max.Y; y++ {
 		for x := b.Min.X; x < b.Max.X; x++ {
 			c := m.At(x, y)
 			cc := p9.Convert(c)
 			if cc == p9[0] {
 				black = true
 			}
 			if g.isInPalette(p, cc) == -1 {
 				p = append(p, cc)
 			}
 		}
 	}
 	if len(p) < 256 && black == true {
 		p[0] = color.RGBA{0x00, 0x00, 0x00, 0x00} // transparent
 		p = append(p, p9[0])
 	}
 	return p
 }
 // isInPalette ...
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 3:01 下午 2021/11/29
 func (g *GIFConvert) isInPalette(p color.Palette, c color.Color) int {
 	ret := -1
 	for i, v := range p {
 		if v == c {
 			return i
 		}
 	}
 	return ret
 }
--- a/image/gif_test.go
+++ b/image/gif_test.go
@ -0,0 +1,24 @@
 // Package image ...
 //
 // Description : image ...
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2021-11-29 3:10 下午
 package image
 import (
 	"fmt"
 	"testing"
 )
 // TestGIFConvert_Generate ...
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 3:10 下午 2021/11/29
 func TestGIFConvert_Generate(t *testing.T) {
 	sourceImgList := []string{"./test/1.jpeg", "./test/2.jpeg", "./test/3.jpeg", "./test/4.jpeg"}
 	savePath := "./test/test.gif"
 	fmt.Println(GIF.Generate(sourceImgList, savePath))
 }
--- a/image/test/1.jpeg
+++ b/image/test/1.jpeg
--- a/image/test/2.jpeg
+++ b/image/test/2.jpeg
--- a/image/test/3.jpeg
+++ b/image/test/3.jpeg
--- a/image/test/4.jpeg
+++ b/image/test/4.jpeg
--- a/image/test/test.gif
+++ b/image/test/test.gif
--- a/util/file.go
+++ b/util/file.go
@ -85,3 +85,16 @@ func IsFileExist(filePath string) (bool, bool) {
 	f, err := os.Stat(filePath)
 	return nil == err || os.IsExist(err), (nil == err || os.IsExist(err)) && !f.IsDir()
 }
 // GetFileType 获取文件类型
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 2:30 下午 2021/11/29
 func GetFileType(fileName string) string {
 	fileArr := strings.Split(fileName, ".")
 	if len(fileArr) < 2 {
 		return ""
 	}
 	return strings.ToLower(fileArr[len(fileArr)-1])
 }