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ceph_argparse: add _daemon versions of argparse calls

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mon needs to call argparse for a couple of -- options, and the
argparse_witharg routines were attempting to cerr/exit on missing
arguments.  This is appropriate for the CLI usage, but not the daemon
usage.  Add a 'cli' flag that can be set false for the daemon usage
(and cause the parsing routine to return false instead of exit).

The daemon's parsing code due for a rewrite soon.

Signed-off-by: Dan Mick <dan.mick@inktank.com>
Reviewed-by: Joao Eduardo Luis <joao.luis@inktank.com>
This commit is contained in:
Dan Mick 2013-04-08 13:49:22 -07:00
parent d7b7acefc8
commit c76bbc2e6d
2 changed files with 50 additions and 7 deletions

52
src/common/ceph_argparse.cc
View File

@ -252,7 +252,8 @@ bool ceph_argparse_binary_flag(std::vector<const char*> &args,
}
static bool va_ceph_argparse_witharg(std::vector<const char*> &args,
std::vector<const char*>::iterator &i, std::string *ret, va_list ap)
std::vector<const char*>::iterator &i, std::string *ret, bool cli,
va_list ap)
{
const char *first = *i;
char tmp[strlen(first)+1];
@ -278,8 +279,12 @@ static bool va_ceph_argparse_witharg(std::vector<const char*> &args,
else if (first[strlen_a] == '\0') {
// find second part (or not)
if (i+1 == args.end()) {
cerr << "Option " << *i << " requires an argument." << std::endl;
_exit(1);
if (cli) {
cerr << "Option " << *i << " requires an argument." << std::endl;
_exit(1);
} else {
return false;
}
}
i = args.erase(i);
*ret = *i;
@ -296,11 +301,21 @@ bool ceph_argparse_witharg(std::vector<const char*> &args,
bool r;
va_list ap;
va_start(ap, ret);
r = va_ceph_argparse_witharg(args, i, ret, ap);
r = va_ceph_argparse_witharg(args, i, ret, false, ap);
va_end(ap);
return r;
}
bool ceph_argparse_witharg_daemon(std::vector<const char*> &args,
std::vector<const char*>::iterator &i, std::string *ret, ...)
{
bool r;
va_list ap;
va_start(ap, ret);
r = va_ceph_argparse_witharg(args, i, ret, false, ap);
va_end(ap);
return r;
}
bool ceph_argparse_withint(std::vector<const char*> &args,
std::vector<const char*>::iterator &i, int *ret,
std::ostream *oss, ...)
@ -309,7 +324,30 @@ bool ceph_argparse_withint(std::vector<const char*> &args,
va_list ap;
std::string str;
va_start(ap, oss);
r = va_ceph_argparse_witharg(args, i, &str, ap);
r = va_ceph_argparse_witharg(args, i, &str, true, ap);
va_end(ap);
if (!r) {
return false;
}
std::string err;
int myret = strict_strtol(str.c_str(), 10, &err);
*ret = myret;
if (!err.empty()) {
*oss << err;
}
return true;
}
bool ceph_argparse_withint_daemon(std::vector<const char*> &args,
std::vector<const char*>::iterator &i, int *ret,
std::ostream *oss, ...)
{
bool r;
va_list ap;
std::string str;
va_start(ap, oss);
r = va_ceph_argparse_witharg(args, i, &str, false, ap);
va_end(ap);
if (!r) {
return false;
@ -332,7 +370,7 @@ bool ceph_argparse_withlonglong(std::vector<const char*> &args,
va_list ap;
std::string str;
va_start(ap, oss);
r = va_ceph_argparse_witharg(args, i, &str, ap);
r = va_ceph_argparse_witharg(args, i, &str, false, ap);
va_end(ap);
if (!r) {
return false;
@ -355,7 +393,7 @@ bool ceph_argparse_withfloat(std::vector<const char*> &args,
va_list ap;
std::string str;
va_start(ap, oss);
r = va_ceph_argparse_witharg(args, i, &str, ap);
r = va_ceph_argparse_witharg(args, i, &str, false, ap);
va_end(ap);
if (!r) {
return false;

5
src/common/ceph_argparse.h
View File

@ -57,6 +57,8 @@ bool ceph_argparse_flag(std::vector<const char*> &args,
std::vector<const char*>::iterator &i, ...);
bool ceph_argparse_witharg(std::vector<const char*> &args,
std::vector<const char*>::iterator &i, std::string *ret, ...);
bool ceph_argparse_witharg_daemon(std::vector<const char*> &args,
std::vector<const char*>::iterator &i, std::string *ret, ...);
bool ceph_argparse_binary_flag(std::vector<const char*> &args,
std::vector<const char*>::iterator &i, int *ret,
std::ostream *oss, ...);
@ -66,6 +68,9 @@ extern CephInitParameters ceph_argparse_early_args
extern bool ceph_argparse_withint(std::vector<const char*> &args,
std::vector<const char*>::iterator &i, int *ret,
std::ostream *oss, ...);
extern bool ceph_argparse_withint_daemon(std::vector<const char*> &args,
std::vector<const char*>::iterator &i, int *ret,
std::ostream *oss, ...);
extern bool ceph_argparse_withfloat(std::vector<const char*> &args,
std::vector<const char*>::iterator &i, float *ret,
std::ostream *oss, ...);