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Add support for programs with a null argv[0]

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llvm-svn: 25379
This commit is contained in:
Chris Lattner
2006-01-17 00:32:28 +00:00
parent bec9d720b0
commit f64762c26e
2 changed files with 32 additions and 10 deletions
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34
llvm/lib/Support/CommandLine.cpp
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@@ -448,8 +448,11 @@ void cl::ParseCommandLineOptions(int &argc, char **argv,
}
if (Handler == 0) {
std::cerr << ProgramName << ": Unknown command line argument '" << argv[i]
<< "'. Try: '" << argv[0] << " --help'\n";
if (ProgramName)
std::cerr << ProgramName << ": Unknown command line argument '"
<< argv[i] << "'. Try: '" << argv[0] << " --help'\n";
else
std::cerr << "Unknown command line argument '" << argv[i] << "'.\n";
ErrorParsing = true;
continue;
}
@@ -485,17 +488,28 @@ void cl::ParseCommandLineOptions(int &argc, char **argv,
// Check and handle positional arguments now...
if (NumPositionalRequired > PositionalVals.size()) {
std::cerr << ProgramName
<< ": Not enough positional command line arguments specified!\n"
<< "Must specify at least " << NumPositionalRequired
<< " positional arguments: See: " << argv[0] << " --help\n";
if (ProgramName)
std::cerr << ProgramName
<< ": Not enough positional command line arguments specified!\n"
<< "Must specify at least " << NumPositionalRequired
<< " positional arguments: See: " << argv[0] << " --help\n";
else
std::cerr << "Not enough positional command line arguments specified!\n"
<< "Must specify at least " << NumPositionalRequired
<< " positional arguments.";
ErrorParsing = true;
} else if (!HasUnlimitedPositionals
&& PositionalVals.size() > PositionalOpts.size()) {
std::cerr << ProgramName
<< ": Too many positional arguments specified!\n"
<< "Can specify at most " << PositionalOpts.size()
<< " positional arguments: See: " << argv[0] << " --help\n";
if (ProgramName)
std::cerr << ProgramName
<< ": Too many positional arguments specified!\n"
<< "Can specify at most " << PositionalOpts.size()
<< " positional arguments: See: " << argv[0] << " --help\n";
else
std::cerr << "Too many positional arguments specified!\n"
<< "Can specify at most " << PositionalOpts.size()
<< " positional arguments.\n";
ErrorParsing = true;
} else if (ConsumeAfterOpt == 0) {