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Retain chars with semantic or phrasing meaning #8

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Retain chars with semantic or phrasing meaning #8

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12 changes: 3 additions & 9 deletions src/isomorphic-utils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -117,14 +117,8 @@ export function dateToString(date?: Date): string {
* XML special characters (&<>"') are handled by the escape() function.
*/
export function removeIncompatibleCharacters(str: string): string {
// Keep essential punctuation for natural speech: .?;:!,
// Remove characters that could break SSML structure or cause parsing issues
const chars_to_remove = "*/()[]{}$%^@#+=|\\~`><\"&";
let clean_str = str;
for (const char of chars_to_remove) {
clean_str = clean_str.replace(new RegExp('\\' + char, 'g'), '');
}
return clean_str;
// Remove control characters except for \t, \n, \r
return str.replaceAll(/[\p{C}--[\t\r\n]]/gv, ' ');
}

/**
Expand Down Expand Up @@ -193,4 +187,4 @@ export function calcMaxMesgSize(voiceConfig: TTSConfig): number {
*/
export function ssmlHeadersPlusData(requestId: string, timestamp: string, ssml: string): string {
return `X-RequestId:${requestId}\r\nContent-Type:application/ssml+xml\r\nX-Timestamp:${timestamp}Z\r\nPath:ssml\r\n\r\n${ssml}`;
}
}