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[taler-wallet-core] branch master updated: oops, add missing talerconfig
From: |
gnunet |
Subject: |
[taler-wallet-core] branch master updated: oops, add missing talerconfig.ts |
Date: |
Tue, 24 Mar 2020 12:05:38 +0100 |
This is an automated email from the git hooks/post-receive script.
dold pushed a commit to branch master
in repository wallet-core.
The following commit(s) were added to refs/heads/master by this push:
new 2fb6e8f1 oops, add missing talerconfig.ts
2fb6e8f1 is described below
commit 2fb6e8f11f92d6251e17d95afd0d122a098cbd01
Author: Florian Dold <address@hidden>
AuthorDate: Tue Mar 24 16:35:34 2020 +0530
oops, add missing talerconfig.ts
---
src/util/talerconfig.ts | 120 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 120 insertions(+)
diff --git a/src/util/talerconfig.ts b/src/util/talerconfig.ts
new file mode 100644
index 00000000..333bcd1b
--- /dev/null
+++ b/src/util/talerconfig.ts
@@ -0,0 +1,120 @@
+/*
+ This file is part of GNU Taler
+ (C) 2020 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ * Utilities to handle Taler-style configuration files.
+ *
+ * @author Florian Dold <address@hidden>
+ */
+
+/**
+ * Imports
+ */
+import { AmountJson } from "./amounts";
+import * as Amounts from "./amounts";
+
+export class ConfigError extends Error {
+ constructor(message: string) {
+ super();
+ Object.setPrototypeOf(this, ConfigError.prototype);
+ this.name = "ConfigError";
+ this.message = message;
+ }
+}
+
+type OptionMap = { [optionName: string]: string };
+type SectionMap = { [sectionName: string]: OptionMap };
+
+export class ConfigValue<T> {
+ constructor(
+ private sectionName: string,
+ private optionName: string,
+ private val: string | undefined,
+ private converter: (x: string) => T,
+ ) {}
+
+ required(): T {
+ if (!this.val) {
+ throw new ConfigError(
+ `required option [${this.sectionName}]/${this.optionName} not found`,
+ );
+ }
+ return this.converter(this.val);
+ }
+}
+
+export class Configuration {
+ private sectionMap: SectionMap = {};
+
+ constructor() {}
+
+ loadFromString(s: string): void {
+ const reComment = /^\s*#.*$/;
+ const reSection = /^\s*\[\s*([^\]]*)\s*\]\s*$/;
+ const reParam = /^\s*([^=]+?)\s*=\s*(.*?)\s*$/;
+ const reEmptyLine = /^\s*$/;
+
+ let currentSection: string | undefined = undefined;
+
+ const lines = s.split("\n");
+ for (const line of lines) {
+ console.log("parsing line", JSON.stringify(line));
+ if (reEmptyLine.test(line)) {
+ continue;
+ }
+ if (reComment.test(line)) {
+ continue;
+ }
+ const secMatch = line.match(reSection);
+ if (secMatch) {
+ currentSection = secMatch[1];
+ console.log("setting section to", currentSection);
+ continue;
+ }
+ if (currentSection === undefined) {
+ throw Error("invalid configuration, expected section header");
+ }
+ const paramMatch = line.match(reParam);
+ if (paramMatch) {
+ const optName = paramMatch[1];
+ let val = paramMatch[2];
+ if (val.startsWith('"') && val.endsWith('"')) {
+ val = val.slice(1, val.length - 1);
+ }
+ const sec = this.sectionMap[currentSection] ?? {};
+ this.sectionMap[currentSection] = Object.assign(sec, {
+ [optName]: val,
+ });
+ continue;
+ }
+ throw Error(
+ "invalid configuration, expected section header or option assignment",
+ );
+ }
+
+ console.log("parsed config", JSON.stringify(this.sectionMap, undefined,
2));
+ }
+
+ getString(section: string, option: string): ConfigValue<string> {
+ const val = (this.sectionMap[section] ?? {})[option];
+ return new ConfigValue(section, option, val, x => x);
+ }
+
+ getAmount(section: string, option: string): ConfigValue<AmountJson> {
+ const val = (this.sectionMap[section] ?? {})[option];
+ return new ConfigValue(section, option, val, x => Amounts.parseOrThrow(x));
+ }
+}
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