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Nicer messages in command-line mode on read/write errors

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David Majda 2011-01-26 14:01:57 +01:00
parent 957b96c1b5
commit d5caaa7877
1 changed files with 16 additions and 4 deletions
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20
bin/pegjs
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@ -103,13 +103,25 @@ switch (args.length) {
var inputStream = process.openStdin(); var inputStream = process.openStdin();
var outputStream = process.stdout; var outputStream = process.stdout;
break; break;
case 1: case 1:
case 2: case 2:
var inputStream = fs.createReadStream(args[0]); var inputFile = args[0];
var outputStream = fs.createWriteStream( var inputStream = fs.createReadStream(inputFile);
args.length == 1 ? args[0].replace(/\.[^.]*$/, ".js") : args[1] inputStream.on("error", function() {
); abort("Can't read from file \"" + inputFile + "\".");
});
var outputFile = args.length == 1
? args[0].replace(/\.[^.]*$/, ".js")
: args[1];
var outputStream = fs.createWriteStream(outputFile);
outputStream.on("error", function() {
abort("Can't write to file \"" + outputFile + "\".");
});
break; break;
default: default:
abort("Too many arguments."); abort("Too many arguments.");
} }