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ltlfilt: update the exit status in the same way as grep

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* src/bin/ltlfilt.cc: Do it.
This commit is contained in:
Alexandre Duret-Lutz 2012-09-03 17:44:39 +02:00
parent 24a8c03192
commit 267183bda7
1 changed files with 21 additions and 18 deletions
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39
src/bin/ltlfilt.cc
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@ -55,7 +55,11 @@ to the extent permitted by law.";
const char* argp_program_bug_address = "<" SPOT_PACKAGE_BUGREPORT ">";
const char argp_program_doc[] ="\
Read a list of formulas and output them back after some optional processing.";
Read a list of formulas and output them back after some optional processing.\v\
Exit status:\n\
0 if some formulas were output (skipped syntax errors do not count)\n\
1 if no formula were output (no match)\n\
2 if any error has been reported";
#define OPT_SPOT 1
#define OPT_SKIP_ERRORS 2
@ -178,6 +182,8 @@ struct job
typedef std::vector<job> jobs_t;
static jobs_t jobs;
static bool one_match = false;
enum error_style_t { drop_errors, skip_errors };
static error_style_t error_style = drop_errors;
static bool quiet = false;
@ -218,7 +224,7 @@ to_int(const char* s)
char* endptr;
int res = strtol(s, &endptr, 10);
if (*endptr)
error(1, 0, "failed to parse '%s' as an integer.", s);
error(2, 0, "failed to parse '%s' as an integer.", s);
return res;
}
@ -229,7 +235,7 @@ parse_formula_arg(const std::string& input)
spot::ltl::parse_error_list pel;
const spot::ltl::formula* f = spot::ltl::parse(input, pel);
if (spot::ltl::format_parse_errors(std::cerr, input, pel))
error(1, 0, "parse error when parsing an argument");
error(2, 0, "parse error when parsing an argument");
return f;
}
@ -278,7 +284,7 @@ parse_opt(int key, char* arg, struct argp_state* state)
level = arg[0] = '0';
return 0;
}
error(1, 0, "invalid simplification level '%s'", arg);
error(2, 0, "invalid simplification level '%s'", arg);
}
break;
case 's':
@ -373,7 +379,7 @@ parse_opt(int key, char* arg, struct argp_state* state)
case OPT_EQUIVALENT_TO:
{
if (equivalent_to)
error(1, 0, "only one --equivalent-to option can be given");
error(2, 0, "only one --equivalent-to option can be given");
equivalent_to = parse_formula_arg(arg);
break;
}
@ -418,21 +424,15 @@ namespace
if (f)
f->destroy();
if (error_style == drop_errors)
return 1;
if (error_style == skip_errors)
{
std::cout << input << std::endl;
return 1;
}
assert(!"unreachable");
std::cout << input << std::endl;
else
assert(error_style == drop_errors);
return !quiet;
}
if (negate)
{
f = spot::ltl::unop::instance(spot::ltl::unop::Not, f);
}
f = spot::ltl::unop::instance(spot::ltl::unop::Not, f);
if (level)
{
@ -515,6 +515,7 @@ namespace
if (matched)
{
one_match = true;
switch (output_format)
{
case spot_output:
@ -555,7 +556,7 @@ namespace
errno = 0;
std::ifstream input(filename);
if (!input)
error(1, errno, "cannot open '%s'", filename);
error(2, errno, "cannot open '%s'", filename);
return process_stream(input, filename);
}
};
@ -595,7 +596,9 @@ run_jobs()
else
error |= processor.process_file(i->str);
}
return error;
if (error)
return 2;
return one_match ? 0 : 1;
}
int