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-rw-r--r--packages/taler-wallet-core/src/util/talerconfig.ts318
1 files changed, 0 insertions, 318 deletions
diff --git a/packages/taler-wallet-core/src/util/talerconfig.ts b/packages/taler-wallet-core/src/util/talerconfig.ts
deleted file mode 100644
index fa8c2d40f..000000000
--- a/packages/taler-wallet-core/src/util/talerconfig.ts
+++ /dev/null
@@ -1,318 +0,0 @@
-/*
- 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 <dold@taler.net>
- */
-
-/**
- * Imports
- */
-import { AmountJson } from "./amounts";
-import * as Amounts from "./amounts";
-import fs from "fs";
-
-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);
- }
-
- orUndefined(): T | undefined {
- if (this.val !== undefined) {
- return this.converter(this.val);
- } else {
- return undefined;
- }
- }
-
- orDefault(v: T): T | undefined {
- if (this.val !== undefined) {
- return this.converter(this.val);
- } else {
- return v;
- }
- }
-
- isDefined(): boolean {
- return this.val !== undefined;
- }
-}
-
-/**
- * Shell-style path substitution.
- *
- * Supported patterns:
- * "$x" (look up "x")
- * "${x}" (look up "x")
- * "${x:-y}" (look up "x", fall back to expanded y)
- */
-export function pathsub(
- x: string,
- lookup: (s: string, depth: number) => string | undefined,
- depth = 0,
-): string {
- if (depth >= 10) {
- throw Error("recursion in path substitution");
- }
- let s = x;
- let l = 0;
- while (l < s.length) {
- if (s[l] === "$") {
- if (s[l + 1] === "{") {
- let depth = 1;
- const start = l;
- let p = start + 2;
- let insideNamePart = true;
- let hasDefault = false;
- for (; p < s.length; p++) {
- if (s[p] == "}") {
- insideNamePart = false;
- depth--;
- } else if (s[p] === "$" && s[p + 1] === "{") {
- insideNamePart = false;
- depth++;
- }
- if (insideNamePart && s[p] === ":" && s[p + 1] === "-") {
- hasDefault = true;
- }
- if (depth == 0) {
- break;
- }
- }
- if (depth == 0) {
- const inner = s.slice(start + 2, p);
- let varname: string;
- let defaultValue: string | undefined;
- if (hasDefault) {
- [varname, defaultValue] = inner.split(":-", 2);
- } else {
- varname = inner;
- defaultValue = undefined;
- }
-
- const r = lookup(inner, depth + 1);
- if (r !== undefined) {
- s = s.substr(0, start) + r + s.substr(p + 1);
- l = start + r.length;
- continue;
- } else if (defaultValue !== undefined) {
- const resolvedDefault = pathsub(defaultValue, lookup, depth + 1);
- s = s.substr(0, start) + resolvedDefault + s.substr(p + 1);
- l = start + resolvedDefault.length;
- continue;
- }
- }
- l = p;
- continue;
- } else {
- const m = /^[a-zA-Z-_][a-zA-Z0-9-_]*/.exec(s.substring(l + 1));
- if (m && m[0]) {
- const r = lookup(m[0], depth + 1);
- if (r !== undefined) {
- s = s.substr(0, l) + r + s.substr(l + 1 + m[0].length);
- l = l + r.length;
- continue;
- }
- }
- }
- }
- l++;
- }
- return s;
-}
-
-export class Configuration {
- private sectionMap: SectionMap = {};
-
- loadFromString(s: string): void {
- const reComment = /^\s*#.*$/;
- 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) {
- if (reEmptyLine.test(line)) {
- continue;
- }
- if (reComment.test(line)) {
- continue;
- }
- const secMatch = line.match(reSection);
- if (secMatch) {
- currentSection = secMatch[1];
- continue;
- }
- if (currentSection === undefined) {
- throw Error("invalid configuration, expected section header");
- }
- currentSection = currentSection.toUpperCase();
- const paramMatch = line.match(reParam);
- if (paramMatch) {
- const optName = paramMatch[1].toUpperCase();
- 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",
- );
- }
- }
-
- setString(section: string, option: string, value: string): void {
- const secNorm = section.toUpperCase();
- const sec = this.sectionMap[secNorm] ?? (this.sectionMap[secNorm] = {});
- sec[option.toUpperCase()] = value;
- }
-
- /**
- * Get lower-cased section names.
- */
- getSectionNames(): string[] {
- return Object.keys(this.sectionMap).map((x) => x.toLowerCase());
- }
-
- getString(section: string, option: string): ConfigValue<string> {
- const secNorm = section.toUpperCase();
- const optNorm = option.toUpperCase();
- const val = (this.sectionMap[secNorm] ?? {})[optNorm];
- return new ConfigValue(secNorm, optNorm, val, (x) => x);
- }
-
- getPath(section: string, option: string): ConfigValue<string> {
- const secNorm = section.toUpperCase();
- const optNorm = option.toUpperCase();
- const val = (this.sectionMap[secNorm] ?? {})[optNorm];
- return new ConfigValue(secNorm, optNorm, val, (x) =>
- pathsub(x, (v, d) => this.lookupVariable(v, d + 1)),
- );
- }
-
- getYesNo(section: string, option: string): ConfigValue<boolean> {
- const secNorm = section.toUpperCase();
- const optNorm = option.toUpperCase();
- const val = (this.sectionMap[secNorm] ?? {})[optNorm];
- const convert = (x: string): boolean => {
- x = x.toLowerCase();
- if (x === "yes") {
- return true;
- } else if (x === "no") {
- return false;
- }
- throw Error(
- `invalid config value for [${secNorm}]/${optNorm}, expected yes/no`,
- );
- };
- return new ConfigValue(secNorm, optNorm, val, convert);
- }
-
- getNumber(section: string, option: string): ConfigValue<number> {
- const secNorm = section.toUpperCase();
- const optNorm = option.toUpperCase();
- const val = (this.sectionMap[secNorm] ?? {})[optNorm];
- const convert = (x: string): number => {
- try {
- return Number.parseInt(x, 10);
- } catch (e) {
- throw Error(
- `invalid config value for [${secNorm}]/${optNorm}, expected number`,
- );
- }
- };
- return new ConfigValue(secNorm, optNorm, val, convert);
- }
-
- lookupVariable(x: string, depth: number = 0): string | undefined {
- // We loop up options in PATHS in upper case, as option names
- // are case insensitive
- const val = (this.sectionMap["PATHS"] ?? {})[x.toUpperCase()];
- if (val !== undefined) {
- return pathsub(val, (v, d) => this.lookupVariable(v, d), depth);
- }
- // Environment variables can be case sensitive, respect that.
- const envVal = process.env[x];
- if (envVal !== undefined) {
- return envVal;
- }
- return;
- }
-
- getAmount(section: string, option: string): ConfigValue<AmountJson> {
- const val = (this.sectionMap[section] ?? {})[option];
- return new ConfigValue(section, option, val, (x) =>
- Amounts.parseOrThrow(x),
- );
- }
-
- static load(filename: string): Configuration {
- const s = fs.readFileSync(filename, "utf-8");
- const cfg = new Configuration();
- cfg.loadFromString(s);
- return cfg;
- }
-
- write(filename: string): void {
- let s = "";
- for (const sectionName of Object.keys(this.sectionMap)) {
- s += `[${sectionName}]\n`;
- for (const optionName of Object.keys(
- this.sectionMap[sectionName] ?? {},
- )) {
- const val = this.sectionMap[sectionName][optionName];
- if (val !== undefined) {
- s += `${optionName} = ${val}\n`;
- }
- }
- s += "\n";
- }
- fs.writeFileSync(filename, s);
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-04 07:31:43 +0000