forked from akai/readest
Huang Xin
32 lines
943 B
TypeScript
32 lines
943 B
TypeScript
export type Preprocessor = (text: string) => string;
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export type TextSubstitutions = Record<string, string>;
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const defaultSubstitutions: TextSubstitutions = {
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Cover: 'The Cover',
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Dedication: 'Dedication Page',
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Acknowledgements: 'The Acknowledgements',
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};
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export const basicSubstitute = (text: string, substitutions: TextSubstitutions): string => {
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const allSubstitutions = { ...defaultSubstitutions, ...substitutions };
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if (Object.keys(allSubstitutions).length === 0) {
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return text;
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}
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if (allSubstitutions[text]) {
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return allSubstitutions[text];
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}
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return text;
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};
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export function createPreprocessor(substitutions: TextSubstitutions = {}): Preprocessor {
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return (text: string) => basicSubstitute(text, substitutions);
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}
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export function preprocess(texts: string[], substitutions: TextSubstitutions = {}): string[] {
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const preprocessor = createPreprocessor(substitutions);
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return texts.map(preprocessor);
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}
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