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(DataFlex) Unicode Escape and Unescape Text in StringBuilderDemonstrates options for unicode escaping non-us-ascii chars and emojis. Note: This example requires Chilkat v11.1.0 or greater. For more information, see https://www.chilkatsoft.com/unicode_escape.asp
Use ChilkatAx-win32.pkg Procedure Test Boolean iSuccess Original Handle hoSbOriginal Handle hoSb String sCharsetNotUsed String sEncoding String sTemp1 Move False To iSuccess Get Create (RefClass(cComChilkatStringBuilder)) To hoSbOriginal If (Not(IsComObjectCreated(hoSbOriginal))) Begin Send CreateComObject of hoSbOriginal End Get ComLoadFile Of hoSbOriginal "qa_data/txt/utf16_emojis_accented_jap.txt" "utf-16" To iSuccess If (iSuccess = False) Begin Get ComLastErrorText Of hoSbOriginal To sTemp1 Showln sTemp1 Procedure_Return End // The above file contains the following text, which includes some emoji's, // Japanese chars, and accented chars. Get Create (RefClass(cComChilkatStringBuilder)) To hoSb If (Not(IsComObjectCreated(hoSb))) Begin Send CreateComObject of hoSb End Get pvComObject of hoSbOriginal to vSbOriginal Get ComAppendSb Of hoSb vSbOriginal To iSuccess // Charset is not used for unicode escaping. Set it to "utf-8", but it means nothing. Move "utf-8" To sCharsetNotUsed // Indicate the desired format/style of Unicode escaping. // Choose JSON-style (JavaScript-style) Unicode escape sequences by using "unicodeescape" Move "unicodeescape" To sEncoding Get ComEncode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // Output: // \ud83e\udde0 // \ud83d\udd10 // \u2705 // \u26a0\ufe0f // \u274c // \u2713 // \u4e2d // \u00e9 xyz \u00e0 // abc \u79c1 \u306f \u3093 ghi // Revert back to the unescaped chars: Get ComDecode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // ----------------------------------------------------------------------------------------- // Do the same, but use uppercase letters (A-F) in the hex values. Move "unicodeescape-upper" To sEncoding Get ComEncode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // Output: // \uD83E\uDDE0 // \uD83D\uDD10 // \u2705 // \u26A0\uFE0F // \u274C // \u2713 // \u4E2D // \u00E9 xyz \u00E0 // abc \u79C1 \u306F \u3093 ghi // Revert back to the unescaped chars: Get ComDecode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // ----------------------------------------------------------------------------------------- // ECMAScript (JavaScript) �code point escape� syntax Move "unicodeescape-curly" To sEncoding Get ComEncode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // Output: // \u{d83e}\u{dde0} // \u{d83d}\u{dd10} // \u{2705} // \u{26a0}\u{fe0f} // \u{274c} // \u{2713} // \u{4e2d} // \u{00e9} xyz \u{00e0} // abc \u{79c1} \u{306f} \u{3093} ghi // Revert back to the unescaped chars: Get ComDecode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // ----------------------------------------------------------------------------------------- // Do the same, but use uppercase letters (A-F) in the hex values. Move "unicodeescape-curly-upper" To sEncoding Get ComEncode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // Output: // \u{D83E}\u{DDE0} // \u{D83D}\u{DD10} // \u{2705} // \u{26A0}\u{FE0F} // \u{274C} // \u{2713} // \u{4E2D} // \u{00E9} xyz \u{00E0} // abc \u{79C1} \u{306F} \u{3093} ghi // Revert back to the unescaped chars: Get ComDecode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // ----------------------------------------------------------------------------------------- // HTML hexadecimal character reference Move "unicodeescape-htmlhex" To sEncoding Get ComEncode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // Output: // 🧠 // 🔐 // ✅ // ⚠️ // ❌ // ✓ // 中 // é xyz à // abc 私 は ん ghi // Revert back to the unescaped chars: Get ComDecode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // ----------------------------------------------------------------------------------------- // HTML decimal character reference Move "unicodeescape-htmldec" To sEncoding Get ComEncode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // Output: // 🧠 // 🔐 // ✅ // ⚠️ // ❌ // ✓ // 中 // é xyz à // abc 私 は ん ghi // Revert back to the unescaped chars: Get ComDecode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // ----------------------------------------------------------------------------------------- // Unicode code point notation or U+ notation Move "unicodeescape-plus" To sEncoding Get ComEncode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // Output: // u+1f9e0 // u+1f510 // u+2705 // u+26a0u+fe0f // u+274c // u+2713 // u+4e2d // u+00e9 xyz u+00e0 // abc u+79c1 u+306f u+3093 ghi // Chilkat cannot unescape the Unicode code point notation or U+ notation. // For this style, Chilkat only goes in one direction, which is to escape. // To emit uppercase hex, specify unicodeescape-plus-upper Move "unicodeescape-plus-upper" To sEncoding // ... // ... Send ComClear To hoSb Get pvComObject of hoSbOriginal to vSbOriginal Get ComAppendSb Of hoSb vSbOriginal To iSuccess // ----------------------------------------------------------------------------------------- // Hex in Angle Brackets Move "unicodeescape-angle" To sEncoding Get ComEncode Of hoSb sEncoding sCharsetNotUsed To iSuccess Get ComGetAsString Of hoSb To sTemp1 Showln sTemp1 // Output: // <1f9e0> // <1f510> // <2705> // <26a0><fe0f> // <274c> // <2713> // <4e2d> // <e9> xyz <e0> // abc <79c1> <306f> <3093> ghi // Chilkat cannot unescape the angle bracket notation. // For this style, Chilkat only goes in one direction, which is to escape. Send ComClear To hoSb Get pvComObject of hoSbOriginal to vSbOriginal Get ComAppendSb Of hoSb vSbOriginal To iSuccess End_Procedure |
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