[英]Node.js exec to build Marp markdowns doesn't work
I wrote this simple node.js script to build Marp markdown and convert them to PDF.我编写了这个简单的 node.js 脚本来构建 Marp markdown 并将它们转换为 PDF。 But it doesn't do anything and doesn't terminate.
但它什么也不做,也不会终止。 I added a
console.log("test")
at the end I see that node.js doesn't wait for all the command executions to finish but exec
also doesn't run the Marp build command.我在最后添加了一个
console.log("test")
我看到 node.js 不会等待所有命令执行完成,但exec
也不会运行 Marp 构建命令。
If I run the "cmd" string from the terminal it all works.如果我从终端运行“cmd”字符串,则一切正常。 I think something is wrong with the way I use
exec
我认为我使用
exec
的方式有问题
var glob = require("glob");
var cp = require("child_process");
glob("lab*/*.marp.md", {}, function (err, files) {
files.forEach((file) => {
var destination = file.replace(".md", "");
var cmd = `marp ${file} --allow-local-files --pdf -o ${destination}.pdf`;
var dir = cp.exec(cmd, (err, stdout, stderr) => {
if (err) {
console.log("node couldn't execute the command");
return;
}
// the *entire* stdout and stderr (buffered)
console.log(`stdout: ${stdout}`);
console.log(`stderr: ${stderr}`);
});
dir.on("exit", function (code) {
// exit code is code
console.log(`finished building: ${file}`);
});
});
});
you can try the execSync() function It'll solve the issue你可以试试 execSync() 函数它会解决这个问题
var glob = require("glob");
var cp = require("child_process");
glob("lab*/*.marp.md", {}, function (err, files) {
files.forEach((file) => {
var destination = file.replace(".md", "");
var cmd = `marp ${file} --allow-local-files --pdf -o ${destination}.pdf`;
var dir = cp.execSync(cmd, (err, stdout, stderr) => {
if (err) {
console.log("node couldn't execute the command");
return;
}
// the *entire* stdout and stderr (buffered)
console.log(`stdout: ${stdout}`);
console.log(`stderr: ${stderr}`);
});
dir.on("exit", function (code) {
// exit code is code
console.log(`finished building: ${file}`);
});
});
});
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