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‎.gitignore

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.idea
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test.jpg

‎README.md

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# 猪圈密码
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# 一、猪圈密码介绍
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猪圈密码共济会密码解密，朱高密码解密，PigPen_chiper密码
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# 二、安装
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```bash
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go get -u github.com/cryptography-research-lab/go-pigpen-cipher
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```
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# 三、API使用示例
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```go
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```
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# 四、TODO
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字体文件来自： http://www.metools.info/code/c89.html，感谢站长！
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src: url("/skin/css/pigpass/pigpass-font.woff2") format("woff2"),
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url("/skin/css/pigpass/pigpass-font.woff") format("woff"),
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url("") format("truetype"),
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url("") format("embedded-opentype"),
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url("") format("svg");
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font-weight:normal;
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‎data/data.go

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package data
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import _ "embed"
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//go:embed pigpen-font.woff
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var PigpenFontWoff []byte
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//go:embed pigpen-font.woff2
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var PigpenFontWoff2 []byte
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//go:embed pigpen-font.ttf
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var PigpenFontTTF []byte
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//go:embed pigpen-font.svg
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var PigpenFontSVG []byte
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//go:embed pigpen-font.eot
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var PigpenFontEot []byte

‎data/pigpen-font.eot

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‎data/pigpen-font.svg

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‎data/pigpen-font.ttf

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‎data/pigpen-font.woff

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‎data/pigpen-font.woff2

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‎errors.go

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package pigpen_cipher
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import "errors"
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// ErrPlaintextMustIsLetters 要加密的明文必须都是英文字母
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var ErrPlaintextMustIsLetters = errors.New("plaintext must is letters")

‎examples/basic_usage.go

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package main
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import (
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"fmt"
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pigpen_cipher "github.com/cryptography-research-lab/go-pigpen-cipher"
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"os"
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)
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func main() {
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// 把明文加密为图片
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imageBytes, err := pigpen_cipher.Encrypt("helloworld", pigpen_cipher.NewOptions().WithFontSize(80))
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if err != nil {
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fmt.Println("加密失败： " + err.Error())
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return
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}
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// 把图片保存到本地查看
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err = os.WriteFile("test.jpg", imageBytes, os.ModePerm)
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if err != nil {
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fmt.Println("图片保存失败： " + err.Error())
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return
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}
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fmt.Println("图片保存成功！")
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}

‎go.mod

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module github.com/cryptography-research-lab/go-pigpen-cipher
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go 1.18
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require (
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github.com/davecgh/go-spew v1.1.1 // indirect
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github.com/golang-infrastructure/go-variable-parameter v0.0.3 // indirect
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github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
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github.com/pmezard/go-difflib v1.0.0 // indirect
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github.com/stretchr/objx v0.5.0 // indirect
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github.com/stretchr/testify v1.8.1 // indirect
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golang.org/x/image v0.3.0 // indirect
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gopkg.in/yaml.v3 v3.0.1 // indirect
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)

‎go.sum

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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
2+
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
3+
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
4+
github.com/golang-infrastructure/go-variable-parameter v0.0.3 h1:+roJv+T/krkl5YMZtCXzdgDSP0RDWK0W1V2lTkpeDNA=
5+
github.com/golang-infrastructure/go-variable-parameter v0.0.3/go.mod h1:qEnCqgG04+EpGWqRXaNpKhu4JsP6xcT85WpJyS83Dcw=
6+
github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
7+
github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
8+
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
9+
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
10+
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
12+
github.com/stretchr/objx v0.5.0 h1:1zr/of2m5FGMsad5YfcqgdqdWrIhu+EBEJRhR1U7z/c=
13+
github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
14+
github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
15+
github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
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github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
17+
github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
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github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
20+
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
21+
golang.org/x/image v0.3.0 h1:HTDXbdK9bjfSWkPzDJIw89W8CAtfFGduujWs33NLLsg=
22+
golang.org/x/image v0.3.0/go.mod h1:fXd9211C/0VTlYuAcOhW8dY/RtEJqODXOWBDpmYBf+A=
23+
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
24+
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
25+
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
26+
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
27+
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
28+
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
29+
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
30+
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
31+
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
32+
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
33+
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
34+
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
35+
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
36+
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
37+
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
38+
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
39+
golang.org/x/text v0.6.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
40+
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
41+
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
42+
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
43+
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
44+
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
45+
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
46+
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
47+
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

‎pigpen_cipher.go

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package pigpen_cipher
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import (
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"bytes"
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"github.com/cryptography-research-lab/go-pigpen-cipher/data"
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variable_parameter "github.com/golang-infrastructure/go-variable-parameter"
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"github.com/golang/freetype"
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"golang.org/x/image/draw"
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"image"
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"image/png"
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)
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// ------------------------------------------------ ---------------------------------------------------------------------
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// Option 加密时的各种选项
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type Option struct {
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// 每个字体有多大
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FontSize int
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// 多少列一换行
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ColumnsWidth int
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}
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func NewOptions() *Option {
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return &Option{
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FontSize: 50,
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ColumnsWidth: 80,
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}
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}
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func (x *Option) WithFontSize(fontSize int) *Option {
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x.FontSize = fontSize
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return x
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}
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func (x *Option) WithColumnsWidth(columnsWidth int) *Option {
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x.ColumnsWidth = columnsWidth
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return x
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}
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// ------------------------------------------------ ---------------------------------------------------------------------
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// Encrypt 对字符加密，返回加密后的图片
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func Encrypt(plaintext string, options ...*Option) ([]byte, error) {
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// 检查输入的明文，必须都是英文字母
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for _, c := range plaintext {
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isOk := (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
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if !isOk {
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return nil, ErrPlaintextMustIsLetters
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}
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}
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// 设置默认参数
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options = variable_parameter.SetDefaultParamByFunc(options, NewOptions)
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width := len(plaintext)*options[0].FontSize + 10
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height := ((len(plaintext)+options[0].ColumnsWidth-1)/options[0].ColumnsWidth)*options[0].FontSize + 10
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background := image.NewRGBA(image.Rect(0, 0, width, height))
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draw.Draw(background, background.Bounds(), image.White, image.Point{X: 0, Y: 0}, draw.Src)
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context, err := GetCharacterContext()
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if err != nil {
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return nil, err
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}
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context.SetClip(background.Bounds())
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context.SetDst(background)
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context.SetSrc(image.Black)
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context.SetFontSize(float64(options[0].FontSize))
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pt := freetype.Pt(0, options[0].FontSize/2+1-3+int(context.PointToFixed(26)>>6))
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_, err = context.DrawString(plaintext, pt)
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if err != nil {
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return nil, err
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}
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buffer := &bytes.Buffer{}
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err = png.Encode(buffer, background)
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if err != nil {
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return nil, err
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}
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return buffer.Bytes(), nil
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}
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// Decrypt 对猪圈密码解密
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// TODO 待实现，还没想好咋实现图形识别
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func Decrypt() {
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}
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// GetCharacterContext 读取字体文件
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func GetCharacterContext() (*freetype.Context, error) {
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f, err := freetype.ParseFont(data.PigpenFontTTF)
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if err != nil {
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return nil, err
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}
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c := freetype.NewContext()
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c.SetFont(f)
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c.SetDPI(72)
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c.SetFont(f)
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c.SetFontSize(26)
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return c, nil
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}

‎pigpen_cipher_test.go

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package pigpen_cipher
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import (
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"github.com/stretchr/testify/assert"
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"os"
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"testing"
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)
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func TestEncrypt(t *testing.T) {
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imageBytes, err := Encrypt("test", NewOptions().WithFontSize(80))
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assert.Nil(t, err)
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err = os.WriteFile("test.jpg", imageBytes, os.ModePerm)
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assert.Nil(t, err)
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}

‎table.go

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package pigpen_cipher
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type Table []rune
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func F() {
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}
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// 草，怎么表示这些图形啊...
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var DefaultTable Table = []rune{}

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