crash: render ANSI colors on crash page

Could not for the life of me get any regex to properly strip the ANSI
escape sequences, so the text log will have to suffer with them, but the
ansihtml library is now used to render them into HTML.

exit.go

@@ -11,6 +11,8 @@ import (
 	"runtime/debug"
 	"strings"
 	"time"
+
+	"github.com/robert-nix/ansihtml"
 )
 
 // https://gist.github.com/swdunlop/9629168
@@ -84,6 +86,12 @@ func Exit(err interface{}) {
 		log.Fatalf("Failed to write crash dump file: %v", err2)
 	}
 	log.Printf("\n------\nA crash report has been saved to \"%s\".\n------", fpath+".txt")
+
+	// Render ANSI colors to HTML
+	data["Log"] = template.HTML(string(ansihtml.ConvertToHTML([]byte(data["Log"].(string)))))
+	data["SanitizedLog"] = template.HTML(string(ansihtml.ConvertToHTML([]byte(data["SanitizedLog"].(string)))))
+	data["Err"] = template.HTML(string(ansihtml.ConvertToHTML([]byte(data["Err"].(string)))))
+
 	f, err2 := os.OpenFile(fpath+".html", os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
 	if err2 != nil {
 		log.Fatalf("Failed to open crash dump file: %v", err2)

go.mod

@@ -51,7 +51,9 @@ require (
 	github.com/mailgun/mailgun-go/v4 v4.9.0
 	github.com/mattn/go-isatty v0.0.19 // indirect
 	github.com/otiai10/copy v1.7.0 // indirect
+	github.com/pborman/ansi v1.0.0 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
+	github.com/robert-nix/ansihtml v1.0.1 // indirect
 	github.com/steambap/captcha v1.4.1
 	github.com/swaggo/files v1.0.1
 	github.com/swaggo/gin-swagger v1.6.0

go.sum

@@ -269,6 +269,8 @@ github.com/otiai10/mint v1.3.0/go.mod h1:F5AjcsTsWUqX+Na9fpHb52P8pcRX2CI6A3ctIT9
 github.com/otiai10/mint v1.3.3/go.mod h1:/yxELlJQ0ufhjUwhshSj+wFjZ78CnZ48/1wtmBH1OTc=
 github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c h1:rp5dCmg/yLR3mgFuSOe4oEnDDmGLROTvMragMUXpTQw=
 github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c/go.mod h1:X07ZCGwUbLaax7L0S3Tw4hpejzu63ZrrQiUe6W0hcy0=
+github.com/pborman/ansi v1.0.0 h1:OqjHMhvlSuCCV5JT07yqPuJPQzQl+WXsiZ14gZsqOrQ=
+github.com/pborman/ansi v1.0.0/go.mod h1:SgWzwMAx1X/Ez7i90VqF8LRiQtx52pWDiQP+x3iGnzw=
 github.com/pelletier/go-toml/v2 v2.0.1/go.mod h1:r9LEWfGN8R5k0VXJ+0BkIe7MYkRdwZOjgMj2KwnJFUo=
 github.com/pelletier/go-toml/v2 v2.0.6 h1:nrzqCb7j9cDFj2coyLNLaZuJTLjWjlaz6nvTvIwycIU=
 github.com/pelletier/go-toml/v2 v2.0.6/go.mod h1:eumQOmlWiOPt5WriQQqoM5y18pDHwha2N+QD+EUNTek=
@@ -280,6 +282,8 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/robert-nix/ansihtml v1.0.1 h1:VTiyQ6/+AxSJoSSLsMecnkh8i0ZqOEdiRl/odOc64fc=
+github.com/robert-nix/ansihtml v1.0.1/go.mod h1:CJwclxYaTPc2RfcxtanEACsYuTksh4yDXcNeHHKZINE=
 github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
 github.com/rogpeppe/go-internal v1.8.0 h1:FCbCCtXNOY3UtUuHUYaghJg4y7Fd14rXifAYUAtL9R8=
 github.com/rogpeppe/go-internal v1.8.0/go.mod h1:WmiCO8CzOY8rg0OYDC4/i/2WRWAB6poM+XZ2dLUbcbE=