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Resolve a problem of 1024 bytes limited help message in some terminals. #10980

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Sep 20, 2016
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28 changes: 15 additions & 13 deletions src/compiler/tsc.ts
Original file line number Diff line number Diff line change
Expand Up @@ -667,7 +667,7 @@ namespace ts {
}

function printHelp() {
let output = "";
const output: string[] = [];

// We want to align our "syntax" and "examples" commands to a certain margin.
const syntaxLength = getDiagnosticText(Diagnostics.Syntax_Colon_0, "").length;
Expand All @@ -678,17 +678,17 @@ namespace ts {
let syntax = makePadding(marginLength - syntaxLength);
syntax += "tsc [" + getDiagnosticText(Diagnostics.options) + "] [" + getDiagnosticText(Diagnostics.file) + " ...]";

output += getDiagnosticText(Diagnostics.Syntax_Colon_0, syntax);
output += sys.newLine + sys.newLine;
output.push(getDiagnosticText(Diagnostics.Syntax_Colon_0, syntax));
output.push(sys.newLine + sys.newLine);

// Build up the list of examples.
const padding = makePadding(marginLength);
output += getDiagnosticText(Diagnostics.Examples_Colon_0, makePadding(marginLength - examplesLength) + "tsc hello.ts") + sys.newLine;
output += padding + "tsc --outFile file.js file.ts" + sys.newLine;
output += padding + "tsc @args.txt" + sys.newLine;
output += sys.newLine;
output.push(getDiagnosticText(Diagnostics.Examples_Colon_0, makePadding(marginLength - examplesLength) + "tsc hello.ts") + sys.newLine);
output.push(padding + "tsc --outFile file.js file.ts" + sys.newLine);
output.push(padding + "tsc @args.txt" + sys.newLine);
output.push(sys.newLine);

output += getDiagnosticText(Diagnostics.Options_Colon) + sys.newLine;
output.push(getDiagnosticText(Diagnostics.Options_Colon) + sys.newLine);

// Sort our options by their names, (e.g. "--noImplicitAny" comes before "--watch")
const optsList = filter(optionDeclarations.slice(), v => !v.experimental);
Expand Down Expand Up @@ -755,18 +755,20 @@ namespace ts {
const usage = usageColumn[i];
const description = descriptionColumn[i];
const kindsList = optionsDescriptionMap[description];
output += usage + makePadding(marginLength - usage.length + 2) + description + sys.newLine;
output.push(usage + makePadding(marginLength - usage.length + 2) + description + sys.newLine);

if (kindsList) {
output += makePadding(marginLength + 4);
output.push(makePadding(marginLength + 4));
for (const kind of kindsList) {
output += kind + " ";
output.push(kind + " ");
}
output += sys.newLine;
output.push(sys.newLine);
}
}

sys.write(output);
for (const line of output) {
sys.write(line);
}
return;

function getParamType(option: CommandLineOption) {
Expand Down