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import * as regex from './regex';
/**
* 非空文字列(ホワイトスペース構成は除く)か。
*
* @param s
* @returns
*/
export function isNotWhiteSpace(s: string | null | undefined): s is string {
return types.isString(s) && trim(s).length !== 0;
}
/**
* トリムの未指定時の対象文字。
*/
const TrimCharacters: ReadonlySet<string> = new Set([
"\u{0009}",
"\u{000a}",
"\u{000b}",
"\u{000c}",
"\u{000d}",
"\u{0085}",
"\u{00a0}",
"\u{0020}",
"\u{2000}",
"\u{2001}",
"\u{2002}",
"\u{2003}",
"\u{2004}",
"\u{2005}",
"\u{2006}",
"\u{2007}",
"\u{2008}",
"\u{2009}",
"\u{200A}",
"\u{202F}",
"\u{205F}",
"\u{3000}",
]);
/**
* 先頭文字列のトリム処理。
* @param s
* @param characters
* @returns
*/
export function trimStart(s: string, characters: ReadonlySet<string> | null = null): string {
characters ??= TrimCharacters;
Iif (!characters.size) {
return s;
}
for (let i = 0; i < s.length; i++) {
if (characters.has(s[i])) {
continue;
}
return s.substring(i);
}
return '';
}
/**
* 終端文字列のトリム処理。
* @param s
* @param characters
* @returns
*/
export function trimEnd(s: string, characters: ReadonlySet<string> | null = null): string {
characters ??= TrimCharacters;
Iif (!characters.size) {
return s;
}
for (let i = 0; i < s.length; i++) {
if (characters.has(s[s.length - i - 1])) {
continue;
}
return s.substring(0, s.length - i);
}
return '';
}
/**
* 前後のトリム処理。
* @param s
* @param characters
* @returns
*/
export function trim(s: string, characters: ReadonlySet<string> | null = null): string {
characters ??= TrimCharacters;
Iif (!characters.size) {
return s;
}
return trimEnd(trimStart(s, characters), characters);
}
export function replaceAllImpl(source: string, searchValue: string | RegExp, replaceValue: string): string {
if (searchValue instanceof RegExp) {
const flags = searchValue.flags.includes('g')
? searchValue.flags
: searchValue.flags + 'g'
;
return source.replace(new RegExp(searchValue.source, flags), replaceValue);
}
return source.replace(new RegExp(regex.escape(searchValue), 'g'), replaceValue);
}
export function replaceAll(source: string, searchValue: string | RegExp, replaceValue: string): string {
Iif (!("replaceAll" in String.prototype)) {
return replaceAllImpl(source, searchValue, replaceValue);
}
return source.replaceAll(searchValue, replaceValue);
}
/**
* 改行分割。
* @param source
* @returns
*/
export function splitLines(source: string | null | undefined): Array<string> {
if (!source) {
return [];
}
return source.split(/\r\n|\n|\r/);
}
export function toBoolean(s: string | null | undefined): boolean {
if (!s) {
return false;
}
return s.toLowerCase() === 'true';
}
export const enum MatchMode {
Partial,
Forward,
Backward,
Perfect,
Regex,
}
export interface MatchResult {
//#region property
readonly matched: boolean;
readonly isRegex: boolean;
readonly regex: RegExp;
//#endregion
//#region function
//#endregion
}
class MatchResultImpl {
//#region variable
private _matched: boolean;
private _regex: RegExp | null;
//#endregion
private constructor(matched: boolean, regex: RegExp | null) {
this._matched = matched;
this._regex = regex;
}
//#region MatchResult
public get matched(): boolean {
return this._matched;
}
public get isRegex(): boolean {
return this._regex !== null;
}
public get regex(): RegExp {
Iif (!this._regex) {
throw new Error('regex');
}
return this._regex;
}
//#endregion
//#region function
public static none(): MatchResultImpl {
return new MatchResultImpl(false, null);
}
public static matchedPlain(): MatchResultImpl {
return new MatchResultImpl(true, null);
}
public static matchedRegex(regex: RegExp): MatchResultImpl {
return new MatchResultImpl(true, regex);
}
//#endregion
}
function matchPartial(input: string, pattern: string, ignoreCase: boolean): MatchResultImpl {
let index = -1;
if (ignoreCase) {
index = input.toLowerCase().indexOf(pattern.toLowerCase());
} else {
index = input.indexOf(pattern);
}
if (index !== -1) {
return MatchResultImpl.matchedPlain();
}
return MatchResultImpl.none();
}
function matchForward(input: string, pattern: string, ignoreCase: boolean): MatchResultImpl {
if (ignoreCase) {
if (input.toLowerCase().startsWith(pattern.toLowerCase())) {
return MatchResultImpl.matchedPlain();
}
} else {
if (input.startsWith(pattern)) {
return MatchResultImpl.matchedPlain();
}
}
return MatchResultImpl.none();
}
function matchBackward(input: string, pattern: string, ignoreCase: boolean): MatchResultImpl {
if (ignoreCase) {
Iif (input.toLowerCase().endsWith(pattern.toLowerCase())) {
return MatchResultImpl.matchedPlain();
}
} else {
if (input.endsWith(pattern)) {
return MatchResultImpl.matchedPlain();
}
}
return MatchResultImpl.none();
}
function matchPerfect(input: string, pattern: string, ignoreCase: boolean): MatchResultImpl {
if (ignoreCase) {
Iif (input.toLowerCase() === pattern.toLowerCase()) {
return MatchResultImpl.matchedPlain();
}
} else {
if (input === pattern) {
return MatchResultImpl.matchedPlain();
}
}
return MatchResultImpl.none();
}
function matchRegex(input: string, pattern: string, ignoreCase: boolean): MatchResultImpl {
const flags = ignoreCase ? 'gi' : 'g';
try {
const regex = new RegExp(pattern, flags);
if (regex.test(input)) {
return MatchResultImpl.matchedRegex(regex);
}
} catch (ex) {
console.warn('matchRegex', ex);
}
return MatchResultImpl.none();
}
export function match(input: string, pattern: string, ignoreCase: boolean, mode: MatchMode): MatchResult {
switch (mode) {
case MatchMode.Partial:
return matchPartial(input, pattern, ignoreCase);
case MatchMode.Forward:
return matchForward(input, pattern, ignoreCase);
case MatchMode.Backward:
return matchBackward(input, pattern, ignoreCase);
case MatchMode.Perfect:
return matchPerfect(input, pattern, ignoreCase);
case MatchMode.Regex:
return matchRegex(input, pattern, ignoreCase);
default:
return MatchResultImpl.none();
}
}
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