93 lines
2.6 KiB
TypeScript
93 lines
2.6 KiB
TypeScript
import * as plugins from './smartstring.plugins';
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/**
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* splits a string into an array
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* @param stringArg
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*/
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const splitStringAtLineBreak = (stringArg: string): string[] => {
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let resultArray = stringArg.split('\n');
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return cleanStringArray(resultArray);
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};
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/**
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* joins a string together again
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* @param stringArrayArg
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*/
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const joinStringWithLineBreaks = (stringArrayArg: string[]): string => {
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let resultString: string = '';
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for (let line of stringArrayArg) {
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resultString = resultString + line + '\n'; // add new line at end
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}
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return resultString;
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};
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/**
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* cleans first and last line in case they are empty
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* @param stringArrayArg
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*/
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const cleanStringArray = (stringArrayArg: string[]): string[] => {
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let testRegex = /^[\s]*$/;
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if (testRegex.test(stringArrayArg[0])) {
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stringArrayArg.shift();
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}
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if (testRegex.test(stringArrayArg[stringArrayArg.length - 1])) {
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stringArrayArg.pop();
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}
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return stringArrayArg;
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};
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/**
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* indent an array
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* @param stringArg
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* @param spaceAmount
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*/
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export const indent = (stringArg: string, spaceAmount: number): string => {
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let localStringArray = splitStringAtLineBreak(stringArg);
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for (let stringArg of localStringArray) {
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stringArg = ' '.repeat(spaceAmount) + stringArg;
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}
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let resultString = joinStringWithLineBreaks(localStringArray);
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return resultString;
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};
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/**
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* indents a string with prefix
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* @param stringArg
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* @param prefixArg
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*/
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export const indentWithPrefix = (stringArg: string, prefixArg: string): string => {
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let resultString: string;
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let stringArray = splitStringAtLineBreak(stringArg);
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let resultArray: string[] = [];
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for (let stringItem of stringArray) {
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resultArray.push(prefixArg + stringItem);
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}
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resultString = joinStringWithLineBreaks(resultArray);
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return resultString;
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};
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export const normalize = (stringArg: string): string => {
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let resultString: string;
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let splitStringArray: string[] = splitStringAtLineBreak(stringArg);
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let minCommonLeftOffset: number;
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const deIndentRegex = /^(\s*)/;
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const emptyLineRegex = /^(\s*)$/;
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for (let stringItem of splitStringArray) {
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let offsetString = deIndentRegex.exec(stringItem)[1];
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if (
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(typeof minCommonLeftOffset === 'undefined' || offsetString.length < minCommonLeftOffset) &&
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!emptyLineRegex.test(stringItem)
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) {
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minCommonLeftOffset = offsetString.length;
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}
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}
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let resultSplitStringArray = [];
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for (let stringItem of splitStringArray) {
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resultSplitStringArray.push(stringItem.substr(minCommonLeftOffset));
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}
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resultString = joinStringWithLineBreaks(resultSplitStringArray);
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return resultString;
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};
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