X-Git-Url: https://git.josue.xyz/?p=VSoRC%2F.git;a=blobdiff_plain;f=node_modules%2Fxterm%2Fsrc%2Fbrowser%2FLinkifier.ts;fp=node_modules%2Fxterm%2Fsrc%2Fbrowser%2FLinkifier.ts;h=58aca70eb7d9a0b0fc59c4858c78d983aaf77cdd;hp=0000000000000000000000000000000000000000;hb=4339da12467b75fb8b6ca831f4bf0081c485ed2c;hpb=af450fde25a9ccf4767b29254c463ffb8ef25237

diff --git a/node_modules/xterm/src/browser/Linkifier.ts b/node_modules/xterm/src/browser/Linkifier.ts
new file mode 100644
index 0000000..58aca70
--- /dev/null
+++ b/node_modules/xterm/src/browser/Linkifier.ts
@@ -0,0 +1,348 @@
+/**
+ * Copyright (c) 2017 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { ILinkifierEvent, ILinkMatcher, LinkMatcherHandler, ILinkMatcherOptions, ILinkifier, IMouseZoneManager, IMouseZone, IRegisteredLinkMatcher } from 'browser/Types';
+import { IBufferStringIteratorResult } from 'common/buffer/Types';
+import { getStringCellWidth } from 'common/CharWidth';
+import { EventEmitter, IEvent } from 'common/EventEmitter';
+import { ILogService, IBufferService } from 'common/services/Services';
+
+/**
+ * Limit of the unwrapping line expansion (overscan) at the top and bottom
+ * of the actual viewport in ASCII characters.
+ * A limit of 2000 should match most sane urls.
+ */
+const OVERSCAN_CHAR_LIMIT = 2000;
+
+/**
+ * The Linkifier applies links to rows shortly after they have been refreshed.
+ */
+export class Linkifier implements ILinkifier {
+  /**
+   * The time to wait after a row is changed before it is linkified. This prevents
+   * the costly operation of searching every row multiple times, potentially a
+   * huge amount of times.
+   */
+  protected static _timeBeforeLatency = 200;
+
+  protected _linkMatchers: IRegisteredLinkMatcher[] = [];
+
+  private _mouseZoneManager: IMouseZoneManager | undefined;
+  private _element: HTMLElement | undefined;
+
+  private _rowsTimeoutId: number | undefined;
+  private _nextLinkMatcherId = 0;
+  private _rowsToLinkify: { start: number | undefined, end: number | undefined };
+
+  private _onLinkHover = new EventEmitter<ILinkifierEvent>();
+  public get onLinkHover(): IEvent<ILinkifierEvent> { return this._onLinkHover.event; }
+  private _onLinkLeave = new EventEmitter<ILinkifierEvent>();
+  public get onLinkLeave(): IEvent<ILinkifierEvent> { return this._onLinkLeave.event; }
+  private _onLinkTooltip = new EventEmitter<ILinkifierEvent>();
+  public get onLinkTooltip(): IEvent<ILinkifierEvent> { return this._onLinkTooltip.event; }
+
+  constructor(
+    protected readonly _bufferService: IBufferService,
+    private readonly _logService: ILogService
+  ) {
+    this._rowsToLinkify = {
+      start: undefined,
+      end: undefined
+    };
+  }
+
+  /**
+   * Attaches the linkifier to the DOM, enabling linkification.
+   * @param mouseZoneManager The mouse zone manager to register link zones with.
+   */
+  public attachToDom(element: HTMLElement, mouseZoneManager: IMouseZoneManager): void {
+    this._element = element;
+    this._mouseZoneManager = mouseZoneManager;
+  }
+
+  /**
+   * Queue linkification on a set of rows.
+   * @param start The row to linkify from (inclusive).
+   * @param end The row to linkify to (inclusive).
+   */
+  public linkifyRows(start: number, end: number): void {
+    // Don't attempt linkify if not yet attached to DOM
+    if (!this._mouseZoneManager) {
+      return;
+    }
+
+    // Increase range to linkify
+    if (this._rowsToLinkify.start === undefined || this._rowsToLinkify.end === undefined) {
+      this._rowsToLinkify.start = start;
+      this._rowsToLinkify.end = end;
+    } else {
+      this._rowsToLinkify.start = Math.min(this._rowsToLinkify.start, start);
+      this._rowsToLinkify.end = Math.max(this._rowsToLinkify.end, end);
+    }
+
+    // Clear out any existing links on this row range
+    this._mouseZoneManager.clearAll(start, end);
+
+    // Restart timer
+    if (this._rowsTimeoutId) {
+      clearTimeout(this._rowsTimeoutId);
+    }
+    this._rowsTimeoutId = <number><any>setTimeout(() => this._linkifyRows(), Linkifier._timeBeforeLatency);
+  }
+
+  /**
+   * Linkifies the rows requested.
+   */
+  private _linkifyRows(): void {
+    this._rowsTimeoutId = undefined;
+    const buffer = this._bufferService.buffer;
+
+    if (this._rowsToLinkify.start === undefined || this._rowsToLinkify.end === undefined) {
+      this._logService.debug('_rowToLinkify was unset before _linkifyRows was called');
+      return;
+    }
+
+    // Ensure the start row exists
+    const absoluteRowIndexStart = buffer.ydisp + this._rowsToLinkify.start;
+    if (absoluteRowIndexStart >= buffer.lines.length) {
+      return;
+    }
+
+    // Invalidate bad end row values (if a resize happened)
+    const absoluteRowIndexEnd = buffer.ydisp + Math.min(this._rowsToLinkify.end, this._bufferService.rows) + 1;
+
+    // Iterate over the range of unwrapped content strings within start..end
+    // (excluding).
+    // _doLinkifyRow gets full unwrapped lines with the start row as buffer offset
+    // for every matcher.
+    // The unwrapping is needed to also match content that got wrapped across
+    // several buffer lines. To avoid a worst case scenario where the whole buffer
+    // contains just a single unwrapped string we limit this line expansion beyond
+    // the viewport to +OVERSCAN_CHAR_LIMIT chars (overscan) at top and bottom.
+    // This comes with the tradeoff that matches longer than OVERSCAN_CHAR_LIMIT
+    // chars will not match anymore at the viewport borders.
+    const overscanLineLimit = Math.ceil(OVERSCAN_CHAR_LIMIT / this._bufferService.cols);
+    const iterator = this._bufferService.buffer.iterator(
+      false, absoluteRowIndexStart, absoluteRowIndexEnd, overscanLineLimit, overscanLineLimit);
+    while (iterator.hasNext()) {
+      const lineData: IBufferStringIteratorResult = iterator.next();
+      for (let i = 0; i < this._linkMatchers.length; i++) {
+        this._doLinkifyRow(lineData.range.first, lineData.content, this._linkMatchers[i]);
+      }
+    }
+
+    this._rowsToLinkify.start = undefined;
+    this._rowsToLinkify.end = undefined;
+  }
+
+  /**
+   * Registers a link matcher, allowing custom link patterns to be matched and
+   * handled.
+   * @param regex The regular expression to search for. Specifically, this
+   * searches the textContent of the rows. You will want to use \s to match a
+   * space ' ' character for example.
+   * @param handler The callback when the link is called.
+   * @param options Options for the link matcher.
+   * @return The ID of the new matcher, this can be used to deregister.
+   */
+  public registerLinkMatcher(regex: RegExp, handler: LinkMatcherHandler, options: ILinkMatcherOptions = {}): number {
+    if (!handler) {
+      throw new Error('handler must be defined');
+    }
+    const matcher: IRegisteredLinkMatcher = {
+      id: this._nextLinkMatcherId++,
+      regex,
+      handler,
+      matchIndex: options.matchIndex,
+      validationCallback: options.validationCallback,
+      hoverTooltipCallback: options.tooltipCallback,
+      hoverLeaveCallback: options.leaveCallback,
+      willLinkActivate: options.willLinkActivate,
+      priority: options.priority || 0
+    };
+    this._addLinkMatcherToList(matcher);
+    return matcher.id;
+  }
+
+  /**
+   * Inserts a link matcher to the list in the correct position based on the
+   * priority of each link matcher. New link matchers of equal priority are
+   * considered after older link matchers.
+   * @param matcher The link matcher to be added.
+   */
+  private _addLinkMatcherToList(matcher: IRegisteredLinkMatcher): void {
+    if (this._linkMatchers.length === 0) {
+      this._linkMatchers.push(matcher);
+      return;
+    }
+
+    for (let i = this._linkMatchers.length - 1; i >= 0; i--) {
+      if (matcher.priority <= this._linkMatchers[i].priority) {
+        this._linkMatchers.splice(i + 1, 0, matcher);
+        return;
+      }
+    }
+
+    this._linkMatchers.splice(0, 0, matcher);
+  }
+
+  /**
+   * Deregisters a link matcher if it has been registered.
+   * @param matcherId The link matcher's ID (returned after register)
+   * @return Whether a link matcher was found and deregistered.
+   */
+  public deregisterLinkMatcher(matcherId: number): boolean {
+    for (let i = 0; i < this._linkMatchers.length; i++) {
+      if (this._linkMatchers[i].id === matcherId) {
+        this._linkMatchers.splice(i, 1);
+        return true;
+      }
+    }
+    return false;
+  }
+
+  /**
+   * Linkifies a row given a specific handler.
+   * @param rowIndex The row index to linkify (absolute index).
+   * @param text string content of the unwrapped row.
+   * @param matcher The link matcher for this line.
+   */
+  private _doLinkifyRow(rowIndex: number, text: string, matcher: ILinkMatcher): void {
+    // clone regex to do a global search on text
+    const rex = new RegExp(matcher.regex.source, (matcher.regex.flags || '') + 'g');
+    let match;
+    let stringIndex = -1;
+    while ((match = rex.exec(text)) !== null) {
+      const uri = match[typeof matcher.matchIndex !== 'number' ? 0 : matcher.matchIndex];
+      if (!uri) {
+        // something matched but does not comply with the given matchIndex
+        // since this is most likely a bug the regex itself we simply do nothing here
+        this._logService.debug('match found without corresponding matchIndex', match, matcher);
+        break;
+      }
+
+      // Get index, match.index is for the outer match which includes negated chars
+      // therefore we cannot use match.index directly, instead we search the position
+      // of the match group in text again
+      // also correct regex and string search offsets for the next loop run
+      stringIndex = text.indexOf(uri, stringIndex + 1);
+      rex.lastIndex = stringIndex + uri.length;
+      if (stringIndex < 0) {
+        // invalid stringIndex (should not have happened)
+        break;
+      }
+
+      // get the buffer index as [absolute row, col] for the match
+      const bufferIndex = this._bufferService.buffer.stringIndexToBufferIndex(rowIndex, stringIndex);
+      if (bufferIndex[0] < 0) {
+        // invalid bufferIndex (should not have happened)
+        break;
+      }
+
+      const line = this._bufferService.buffer.lines.get(bufferIndex[0]);
+      if (!line) {
+        break;
+      }
+
+      const attr = line.getFg(bufferIndex[1]);
+      const fg = attr ? (attr >> 9) & 0x1ff : undefined;
+
+      if (matcher.validationCallback) {
+        matcher.validationCallback(uri, isValid => {
+          // Discard link if the line has already changed
+          if (this._rowsTimeoutId) {
+            return;
+          }
+          if (isValid) {
+            this._addLink(bufferIndex[1], bufferIndex[0] - this._bufferService.buffer.ydisp, uri, matcher, fg);
+          }
+        });
+      } else {
+        this._addLink(bufferIndex[1], bufferIndex[0] - this._bufferService.buffer.ydisp, uri, matcher, fg);
+      }
+    }
+  }
+
+  /**
+   * Registers a link to the mouse zone manager.
+   * @param x The column the link starts.
+   * @param y The row the link is on.
+   * @param uri The URI of the link.
+   * @param matcher The link matcher for the link.
+   * @param fg The link color for hover event.
+   */
+  private _addLink(x: number, y: number, uri: string, matcher: ILinkMatcher, fg: number | undefined): void {
+    if (!this._mouseZoneManager || !this._element) {
+      return;
+    }
+
+    const width = getStringCellWidth(uri);
+    const x1 = x % this._bufferService.cols;
+    const y1 = y + Math.floor(x / this._bufferService.cols);
+    let x2 = (x1 + width) % this._bufferService.cols;
+    let y2 = y1 + Math.floor((x1 + width) / this._bufferService.cols);
+    if (x2 === 0) {
+      x2 = this._bufferService.cols;
+      y2--;
+    }
+
+    this._mouseZoneManager.add(new MouseZone(
+      x1 + 1,
+      y1 + 1,
+      x2 + 1,
+      y2 + 1,
+      e => {
+        if (matcher.handler) {
+          return matcher.handler(e, uri);
+        }
+        window.open(uri, '_blank');
+      },
+      () => {
+        this._onLinkHover.fire(this._createLinkHoverEvent(x1, y1, x2, y2, fg));
+        this._element!.classList.add('xterm-cursor-pointer');
+      },
+      e => {
+        this._onLinkTooltip.fire(this._createLinkHoverEvent(x1, y1, x2, y2, fg));
+        if (matcher.hoverTooltipCallback) {
+          // Note that IViewportRange use 1-based coordinates to align with escape sequences such
+          // as CUP which use 1,1 as the default for row/col
+          matcher.hoverTooltipCallback(e, uri, { start: { x: x1, y: y1 }, end: { x: x2, y: y2 } });
+        }
+      },
+      () => {
+        this._onLinkLeave.fire(this._createLinkHoverEvent(x1, y1, x2, y2, fg));
+        this._element!.classList.remove('xterm-cursor-pointer');
+        if (matcher.hoverLeaveCallback) {
+          matcher.hoverLeaveCallback();
+        }
+      },
+      e => {
+        if (matcher.willLinkActivate) {
+          return matcher.willLinkActivate(e, uri);
+        }
+        return true;
+      }
+    ));
+  }
+
+  private _createLinkHoverEvent(x1: number, y1: number, x2: number, y2: number, fg: number | undefined): ILinkifierEvent {
+    return { x1, y1, x2, y2, cols: this._bufferService.cols, fg };
+  }
+}
+
+export class MouseZone implements IMouseZone {
+  constructor(
+    public x1: number,
+    public y1: number,
+    public x2: number,
+    public y2: number,
+    public clickCallback: (e: MouseEvent) => any,
+    public hoverCallback: (e: MouseEvent) => any,
+    public tooltipCallback: (e: MouseEvent) => any,
+    public leaveCallback: () => void,
+    public willLinkActivate: (e: MouseEvent) => boolean
+  ) {
+  }
+}