lix/src/libmain/shared.cc

83 lines
2 KiB
C++
Raw Normal View History

#include <iostream>
#include <cctype>
extern "C" {
#include <aterm2.h>
}
#include "globals.hh"
#include "shared.hh"
#include "config.h"
/* Initialize and reorder arguments, then call the actual argument
processor. */
static void initAndRun(int argc, char * * argv)
{
/* Setup Nix paths. */
nixStore = NIX_STORE_DIR;
nixDataDir = NIX_DATA_DIR;
nixLogDir = NIX_LOG_DIR;
nixDBPath = (string) NIX_STATE_DIR + "/db";
/* Put the arguments in a vector. */
Strings args;
while (argc--) args.push_back(*argv++);
args.erase(args.begin());
/* Expand compound dash options (i.e., `-qlf' -> `-q -l -f'), and
ignore options for the ATerm library. */
for (Strings::iterator it = args.begin();
it != args.end(); )
{
string arg = *it;
if (string(arg, 0, 4) == "-at-")
it = args.erase(it);
else if (arg.length() > 2 && arg[0] == '-' && arg[1] != '-') {
for (unsigned int i = 1; i < arg.length(); i++)
if (isalpha(arg[i]))
args.insert(it, (string) "-" + arg[i]);
else {
args.insert(it, string(arg, i));
break;
}
it = args.erase(it);
} else it++;
}
run(args);
}
static char buf[1024];
int main(int argc, char * * argv)
{
/* ATerm setup. */
ATerm bottomOfStack;
ATinit(argc, argv, &bottomOfStack);
2003-10-16 11:55:37 +00:00
/* Turn on buffering for cerr. */
cerr.rdbuf()->pubsetbuf(buf, sizeof(buf));
try {
initAndRun(argc, argv);
} catch (UsageError & e) {
printMsg(lvlError,
format(
"error: %1%\n"
"Try `%2% --help' for more information.")
% e.what() % programId);
return 1;
} catch (Error & e) {
printMsg(lvlError, format("error: %1%") % e.msg());
return 1;
} catch (exception & e) {
printMsg(lvlError, format("error: %1%") % e.what());
return 1;
}
return 0;
}