Refactors formatters

Moves annotation messages from formatter to annotations
Moves icons into dark/light folders

src/git/formatters/formatter.ts

@@ -0,0 +1,119 @@
+'use strict';
+import { Strings } from '../../system';
+
+export interface IFormatOptions {
+    dateFormat?: string | null;
+    tokenOptions?: { [id: string]: Strings.ITokenOptions | undefined };
+}
+
+type Constructor<T = {}> = new (...args: any[]) => T;
+
+export abstract class Formatter<TItem = any, TOptions extends IFormatOptions = IFormatOptions> {
+
+    protected _item: TItem;
+    protected _options: TOptions;
+
+    constructor(item: TItem, options?: TOptions) {
+        this.reset(item, options);
+    }
+
+    reset(item: TItem, options?: TOptions) {
+        this._item = item;
+
+        if (options === undefined && this._options !== undefined) return;
+
+        if (options === undefined) {
+            options = {} as TOptions;
+        }
+
+        if (options.dateFormat == null) {
+            options.dateFormat = 'MMMM Do, YYYY h:MMa';
+        }
+
+        if (options.tokenOptions == null) {
+            options.tokenOptions = {};
+        }
+
+        this._options = options;
+    }
+
+    private collapsableWhitespace: number = 0;
+
+    protected _padOrTruncate(s: string, options: Strings.ITokenOptions | undefined) {
+        // NOTE: the collapsable whitespace logic relies on the javascript template evaluation to be left to right
+        if (options === undefined) {
+            options = {
+                truncateTo: undefined,
+                padDirection: 'left',
+                collapseWhitespace: false
+            };
+        }
+
+        let max = options.truncateTo;
+
+        if (max === undefined) {
+            if (this.collapsableWhitespace === 0) return s;
+
+            // If we have left over whitespace make sure it gets re-added
+            const diff = this.collapsableWhitespace - s.length;
+            this.collapsableWhitespace = 0;
+
+            if (diff <= 0) return s;
+            if (options.truncateTo === undefined) return s;
+            return Strings.padLeft(s, diff);
+        }
+
+        max += this.collapsableWhitespace;
+        this.collapsableWhitespace = 0;
+
+        const diff = max - s.length;
+        if (diff > 0) {
+            if (options.collapseWhitespace) {
+                this.collapsableWhitespace = diff;
+            }
+
+            if (options.padDirection === 'left') return Strings.padLeft(s, max);
+
+            if (options.collapseWhitespace) {
+                max -= diff;
+            }
+            return Strings.padRight(s, max);
+        }
+
+        if (diff < 0) return Strings.truncate(s, max);
+
+        return s;
+    }
+
+    private static _formatter: Formatter | undefined = undefined;
+
+    protected static fromTemplateCore<TFormatter extends Formatter<TItem, TOptions>, TItem, TOptions extends IFormatOptions>(formatter: TFormatter | Constructor<TFormatter>, template: string, item: TItem, dateFormatOrOptions?: string | null | TOptions): string {
+        if (formatter instanceof Formatter) return Strings.interpolate(template, formatter);
+
+        let options: TOptions | undefined = undefined;
+        if (dateFormatOrOptions == null || typeof dateFormatOrOptions === 'string') {
+            const tokenOptions = Strings.getTokensFromTemplate(template)
+                .reduce((map, token) => {
+                    map[token.key] = token.options;
+                    return map;
+                }, {} as { [token: string]: Strings.ITokenOptions | undefined });
+
+            options = {
+                dateFormat: dateFormatOrOptions,
+                tokenOptions: tokenOptions
+            } as TOptions;
+        }
+        else {
+            options = dateFormatOrOptions;
+        }
+
+        if (this._formatter === undefined) {
+            this._formatter = new formatter(item, options);
+        }
+        else {
+            this._formatter.reset(item, options);
+        }
+
+        return Strings.interpolate(template, this._formatter);
+    }
+}