91 lines
2.5 KiB
TypeScript
91 lines
2.5 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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let 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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let 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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let 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 let 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 let 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 let 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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let deIndentRegex = /^(\s*)/
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let 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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