commit 880e112350b3da46f6dc255a9ee362b300b6f1fa
parent 03022ab02f13ca4c183f8fb2149e7f1b5710d832
Author: n0tr1v <n0tr1v@protonmail.com>
Date: Wed, 16 Nov 2022 02:08:35 -0500
gpg ascii art generator
Diffstat:
3 files changed, 159 insertions(+), 0 deletions(-)
diff --git a/cmd/art/main.go b/cmd/art/main.go
@@ -0,0 +1,140 @@
+package main
+
+import (
+ "fmt"
+ "image/color"
+ "image/png"
+ "os"
+ "sort"
+ "strings"
+)
+
+func main() {
+
+ in := `mQINBGEeQ0kBEADUTVcGuD1sY4Lsn0Bep/T1XZeOeOdT0ZCMJr9Giksb4yhcNPIL
+Sip5EtXmuLBfGMHPngpT96Uns07snJDvC05ruRtIs85PCoeH76HeuBIM8wo9EaYB
+9o6V4EbaFK+NAUvNVc1ydoDkfd9lWCit0nn1tGIMXIxGehNSWIqizpjhg2G6ZIbB
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+oOPZa3Ph5Qw41gWlnA1/j8w5UT4g4SW+yXtGzG86LMTWElJk0fvKOpOZypFCI6qj
+v6bN29zdq0mHUwfk6uHjKzUwNyWC65qLYtffwFs6dmkTwpeO7g0a6/rYbVib5399
+xVvSvZ0OOIWkVWZUDJZdnvm9Lk1ANzeCjdV3uIJFkfPPCdNhWXHy8iL8A+jbgwxh
+7ILlC6bsfdIyJWayEN55kJhNHKEOo+FXyHC19Ms7MUwi5kZStRlkwPMM64RFttKJ
+R4+KUO5A3CJW5IWTpuAphZQ14+DhyDii4m0OcOckvmUsxD/gpJO8UjxlUEWAqMcK
+JDImZZFfPXE2HJVUG/atvuy6gK0zS5MbfUbqmNGWCCHjou7Thh9duKrMmjmU+8hG
+C51QaM/stUmChemk+AS9FksnyF5DZNAV2uAfnLb9yhMpEPXo1k+JGfgswQARAQAB
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+eIzxYZy+gQMIbDsy35WwkQUCYR5DSQIbAwULCQgHAwUVCgkICwUWAgMBAAIeBQIX
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+gbGSHNocQe7P1O807OdiPYOb8GbeSHlbz1nA4+DIf72x1aqNBi4rAgmFMv0IFudB
+HdIsyYYvSxZaBCLDvNwDxGOR0HEI1aG1yfycqJP5mvkniY/CITvfi9xGSVMyabpB
+omHIOxUew75tHF3pk8/tXYEMnYUdgqpSxqW/oQOxpAYS9EGN1LzWp2gt1u0OZ8Np
+xuSOU/14lXP+uppfY0ImUQqLksWrU9Maymbgge+3nEtfq/ZNwIMNq8KYjAqXtQsK
+ekmhN8j4JknB5bo7qSfanFjYC8zcXwqB1bgk/81yNJsjt1vH4VlZ9Z/FwAsI1YVA
+TadcbPaCDRKT3KXrgOrnT1U1SUMZ4C8f0vRqp7Iney4xfoUF/21hMjDzlZB699AD
+2hunWCzbJYiAfYysRXyvpqx09g9ix7lTekZXeVFU82hnK5qOXkfCj0XYcmoUUMZf
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+yibkqiAnE4sxy85PJdR38ZYdfSh46wWP40vbeYSya+5QDSVWwtq/e1Ya+mgVT89y
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+KbkCDQRhHkNJARAA6MBFwZjvUKBPfvILPhjPg0+zUdR5GPkVXKKzYlb2hxSnUUlL
+7wgUhWIyGC2/LE6a24idgjpDBViqFk5urLfv8nML0A64xPlD+IHiAlrDYI8aYVfu
+z9KFEqAgk5aTnotoujfyAQa+qE+xxVOhpvSt4NSuPEuOOXaIWr5fCDSudnli32BC
+1kIjmOjZUHRa9F8O4H59FGHz2PbWtwPyG7eGWUeqnGiRoKha17TzpN5vOFyft5hG
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+ORoaUXeOnn1Dl1uanGjmhW08sfSxyBdsGcVikiogpOD3z3IfIxRlmMd2KrVj79zl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+qkWEHcHvxmCr4c8BmF81myC2icnOYCNM9aff3jgrn+ef/HwkekRUWP8aJbQ8oKk1
+wf83YM2JM2el88PRE6kekJNOfGcdj0GX0bTpwu/lD6CkjA22ygu4+YF2a1MfCPQV
+uhnpGDkYIH5ZJdLq1IiEAbctPcitmwNQcSiDS23iSdino8draQ1YrPLHiNx6RZk0
+joZ8arYjQB9WLhHssTPnNDKuJ/kLjLLsNITDB77N/R588BxeLApywU3JagsCwlAb
+Z4Qx0C7LpikIO6qGP/uyg2ADOLKF/4azh9aIzWwOGzUXjW4UgZWRTv8muAXmMdlv
+FoEVD2av5BES9MvnPsQulj9bU2lUokhBjM1+LERxbqfVfZ2ddAYRIMGF`
+ maskFile := "mask.png"
+ outFile := "out.html"
+
+ f, _ := os.Open(maskFile)
+ im, _ := png.Decode(f)
+
+ lines := strings.Split(in, "\n")
+ w := len(lines[0])
+ h := len(lines)
+
+ classPrefix := "gpg_"
+ classIdx := 0
+ colorsMap := make(map[string]string)
+ colorsArr := [][]string{}
+ for j := 0; j < h; j++ {
+ for i := 0; i < w; i++ {
+ c := im.At(i, j)
+ hex := HexFromRgbColor(c.(color.NRGBA))
+ if _, ok := colorsMap[hex]; ok {
+ continue
+ }
+ className := classPrefix + getClassName(classIdx)
+ colorsMap[hex] = className
+ colorsArr = append(colorsArr, []string{className, hex})
+ classIdx++
+ }
+ }
+ sort.Slice(colorsArr, func(i, j int) bool {
+ return colorsArr[i][0] < colorsArr[j][0]
+ })
+
+ out := ""
+ out += "<style>\n"
+ for _, v := range colorsArr {
+ out += fmt.Sprintf(".%s{color:%s}\n", v[0], v[1])
+ }
+ out += "</style>\n"
+ out += "<div style=\"font-family: monospace; background-color: #222;\">\n"
+ out += "<pre>\n"
+ for j := 0; j < h; j++ {
+ for i := 0; i < w; i++ {
+ c := im.At(i, j)
+ if len(lines[j]) <= i {
+ break
+ }
+ char := lines[j][i]
+ hex := HexFromRgbColor(c.(color.NRGBA))
+ class := colorsMap[hex]
+ out += fmt.Sprintf(`<span class="%s">%s</span>`, class, string(char))
+ }
+ out += "\n"
+ }
+ out += "</pre>\n"
+ out += "</div>"
+
+ _ = os.WriteFile(outFile, []byte(out), 0644)
+}
+
+func HexFromRgbColor(color color.NRGBA) string {
+ return fmt.Sprintf("#%X%X%X", color.R, color.G, color.B)
+}
+
+func getClassName(idx int) string {
+ out := []rune{}
+ r := 'a' - 1
+ for idx >= 0 {
+ if r == 'z' {
+ if len(out) == 0 {
+ out = append(out, 'a')
+ } else {
+ out[0]++
+ }
+ r = 'a' - 1
+ }
+ r++
+ idx--
+ }
+ out = append(out, r)
+ return string(out)
+}
diff --git a/cmd/art/main_test.go b/cmd/art/main_test.go
@@ -0,0 +1,19 @@
+package main
+
+import (
+ "github.com/stretchr/testify/assert"
+ "testing"
+)
+
+func TestGetClassName(t *testing.T) {
+ assert.Equal(t, "a", getClassName(0))
+ assert.Equal(t, "b", getClassName(1))
+ assert.Equal(t, "z", getClassName(25))
+ assert.Equal(t, "aa", getClassName(26))
+ assert.Equal(t, "ab", getClassName(27))
+ assert.Equal(t, "az", getClassName(51))
+ assert.Equal(t, "ba", getClassName(52))
+ assert.Equal(t, "bb", getClassName(53))
+ assert.Equal(t, "bz", getClassName(77))
+ assert.Equal(t, "ca", getClassName(78))
+}
diff --git a/cmd/art/mask.png b/cmd/art/mask.png
Binary files differ.
