Merge pull request go-telegram-bot-api#388 from ErikPelli/master

Escape Telegram formatting symbols

Author: Syfaro

bot.go

@@ -1065,3 +1065,31 @@ func (bot *BotAPI) SetMyCommands(commands []BotCommand) error {
 	}
 	return nil
 }
+
+// EscapeText takes an input text and escape Telegram markup symbols.
+// In this way we can send a text without being afraid of having to escape the characters manually.
+// Note that you don't have to include the formatting style in the input text, or it will be escaped too.
+// If there is an error, an empty string will be returned.
+//
+// parseMode is the text formatting mode (ModeMarkdown, ModeMarkdownV2 or ModeHTML)
+// text is the input string that will be escaped
+func EscapeText(parseMode string, text string) string {
+	var replacer *strings.Replacer
+
+	if parseMode == ModeHTML {
+		replacer = strings.NewReplacer("<", "&lt;", ">", "&gt;", "&", "&amp;")
+	} else if parseMode == ModeMarkdown {
+		replacer = strings.NewReplacer("_", "\\_", "*", "\\*", "`", "\\`", "[", "\\[")
+	} else if parseMode == ModeMarkdownV2 {
+		replacer = strings.NewReplacer(
+			"_", "\\_", "*", "\\*", "[", "\\[", "]", "\\]", "(",
+			"\\(", ")", "\\)", "~", "\\~", "`", "\\`", ">", "\\>",
+			"#", "\\#", "+", "\\+", "-", "\\-", "=", "\\=", "|",
+			"\\|", "{", "\\{", "}", "\\}", ".", "\\.", "!", "\\!",
+		)
+	} else {
+		return ""
+	}
+
+	return replacer.Replace(text)
+}

go.mod

@@ -1,5 +1,8 @@
-module github.com/go-telegram-bot-api/telegram-bot-api
+module github.com/TheRTK/telegram-bot-api
 
 go 1.12
 
-require github.com/technoweenie/multipartstreamer v1.0.1
+require (
+	github.com/go-telegram-bot-api/telegram-bot-api v4.6.4+incompatible
+	github.com/technoweenie/multipartstreamer v1.0.1
+)

go.sum

@@ -1,2 +1,4 @@
+github.com/go-telegram-bot-api/telegram-bot-api v4.6.4+incompatible h1:2cauKuaELYAEARXRkq2LrJ0yDDv1rW7+wrTEdVL3uaU=
+github.com/go-telegram-bot-api/telegram-bot-api v4.6.4+incompatible/go.mod h1:qf9acutJ8cwBUhm1bqgz6Bei9/C/c93FPDljKWwsOgM=
 github.com/technoweenie/multipartstreamer v1.0.1 h1:XRztA5MXiR1TIRHxH2uNxXxaIkKQDeX7m2XsSOlQEnM=
 github.com/technoweenie/multipartstreamer v1.0.1/go.mod h1:jNVxdtShOxzAsukZwTSw6MDx5eUJoiEBsSvzDU9uzog=