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134 lines (122 loc) · 4.39 KB
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134 lines (122 loc) · 4.39 KB
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/*
* Copyright 2023 Red Hat
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { mkdirSync, readFileSync, readdirSync, statSync, writeFileSync } from "node:fs";
import { join } from "node:path";
const PACKAGE_NAME = "org.patternfly.showcase";
const CLASS_NAME = "Code";
const TARGET = "src/main/java";
const START_COMMENT = "// @code-start:";
const END_COMMENT = "// @code-end:";
const SOURCES = [
{ globSuffix: "*Component.java", relativeDir: "src/main/java/org/patternfly/showcase/component" },
{ globSuffix: "*Extension.java", relativeDir: "src/main/java/org/patternfly/showcase/extension" },
{ globSuffix: "*Layout.java", relativeDir: "src/main/java/org/patternfly/showcase/layout" },
{ globSuffix: "*Chart.java", relativeDir: "src/main/java/org/patternfly/showcase/chart" },
];
const args = process.argv.slice(2);
if (args.length === 0 || !args[0]) {
console.error("Missing base directory!");
process.exit(1);
}
const base = args[0];
const targetPath = join(base, TARGET, ...PACKAGE_NAME.split("."));
mkdirSync(targetPath, { recursive: true });
function escapeJava(str) {
if (!str) return "";
let sb = "";
for (const c of str) {
switch (c) {
case '"': sb += '\\"'; break;
case "\\": sb += "\\\\"; break;
case "\r": sb += "\\r"; break;
case "\n": sb += "\\n"; break;
case "\t": sb += "\\t"; break;
default: sb += c;
}
}
return sb;
}
function matchesGlob(name, globSuffix) {
if (globSuffix.startsWith("*")) {
return name.endsWith(globSuffix.substring(1));
}
return name === globSuffix;
}
function extractFromFile(filePath) {
const content = readFileSync(filePath, "utf-8");
const lines = content.split("\n");
const snippets = [];
let name = "";
let collectCode = false;
let leadingWhitespace = 0;
let code = [];
for (const line of lines) {
if (line.includes(START_COMMENT)) {
leadingWhitespace = line.indexOf(START_COMMENT);
name = line.substring(line.indexOf(START_COMMENT) + START_COMMENT.length);
collectCode = true;
} else if (collectCode) {
if (line.includes(END_COMMENT + name)) {
snippets.push({ name, code: [...code] });
name = "";
collectCode = false;
leadingWhitespace = 0;
code = [];
} else {
code.push(line.length < leadingWhitespace ? line : line.substring(leadingWhitespace));
}
}
}
return snippets;
}
let out = "";
out += `package ${PACKAGE_NAME};\n\n`;
out += "import java.util.Map;\n";
out += "import java.util.HashMap;\n\n";
out += "import javax.annotation.processing.Generated;\n\n";
out += "/*\n";
out += " * WARNING! This class is generated. Do not modify.\n";
out += " */\n";
out += '@Generated("code.mjs")\n';
out += `public final class ${CLASS_NAME} {\n\n`;
out += " private static final Map<String, String> snippets = new HashMap<>();\n\n";
out += " static {";
let counter = 0;
for (const spec of SOURCES) {
const dir = join(base, spec.relativeDir);
let files;
try {
files = readdirSync(dir)
.filter(f => statSync(join(dir, f)).isFile() && matchesGlob(f, spec.globSuffix))
.sort();
} catch {
continue;
}
for (const file of files) {
const snippets = extractFromFile(join(dir, file));
for (const { name, code } of snippets) {
out += `\n snippets.put("${escapeJava(name)}", "${escapeJava(code.join("\n"))}");`;
counter++;
}
}
}
out += "\n }\n\n";
out += ` public static String code(String name) {\n`;
out += ' return snippets.getOrDefault(name, "n/a");\n';
out += " }\n";
out += "}\n";
writeFileSync(join(targetPath, `${CLASS_NAME}.java`), out, "utf-8");
console.log(`Processed ${counter} code snippets`);