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-rw-r--r--args.hxx80
1 files changed, 55 insertions, 25 deletions
diff --git a/args.hxx b/args.hxx
index 25566a7..655718f 100644
--- a/args.hxx
+++ b/args.hxx
@@ -786,6 +786,7 @@ namespace args
#ifdef ARGS_NOEXCEPT
/// Only for ARGS_NOEXCEPT
mutable Error error = Error::None;
+ mutable std::string errorMsg;
#endif
public:
@@ -893,6 +894,7 @@ namespace args
matched = false;
#ifdef ARGS_NOEXCEPT
error = Error::None;
+ errorMsg.clear();
#endif
}
@@ -902,6 +904,12 @@ namespace args
{
return error;
}
+
+ /// Only for ARGS_NOEXCEPT
+ std::string GetErrorMsg() const
+ {
+ return errorMsg;
+ }
#endif
};
@@ -1081,11 +1089,12 @@ namespace args
{
if ((GetOptions() & Options::Single) != Options::None && matched)
{
+ std::ostringstream problem;
+ problem << "Flag '" << flag.str() << "' was passed multiple times, but is only allowed to be passed once";
#ifdef ARGS_NOEXCEPT
error = Error::Extra;
+ errorMsg = problem.str();
#else
- std::ostringstream problem;
- problem << "Flag '" << flag.str() << "' was passed multiple times, but is only allowed to be passed once";
throw ExtraError(problem.str());
#endif
}
@@ -1109,13 +1118,12 @@ namespace args
{
if (!Matched() && IsRequired())
{
+ std::ostringstream problem;
+ problem << "Flag '" << matcher.GetLongOrAny().str(shortPrefix, longPrefix) << "' is required";
#ifdef ARGS_NOEXCEPT
- (void)shortPrefix;
- (void)longPrefix;
error = Error::Required;
+ errorMsg = problem.str();
#else
- std::ostringstream problem;
- problem << "Flag '" << matcher.GetLongOrAny().str(shortPrefix, longPrefix) << "' is required";
throw RequiredError(problem.str());
#endif
}
@@ -1260,6 +1268,7 @@ namespace args
ready = true;
#ifdef ARGS_NOEXCEPT
error = Error::None;
+ errorMsg.clear();
#endif
}
@@ -1283,11 +1292,12 @@ namespace args
{
if (IsRequired() && !Matched())
{
+ std::ostringstream problem;
+ problem << "Option '" << Name() << "' is required";
#ifdef ARGS_NOEXCEPT
error = Error::Required;
+ errorMsg = problem.str();
#else
- std::ostringstream problem;
- problem << "Option '" << Name() << "' is required";
throw RequiredError(problem.str());
#endif
}
@@ -1554,6 +1564,7 @@ namespace args
}
#ifdef ARGS_NOEXCEPT
error = Error::None;
+ errorMsg.clear();
#endif
}
@@ -2118,11 +2129,12 @@ namespace args
{
if (child->IsGroup() && !child->Matched())
{
+ std::ostringstream problem;
+ problem << "Group validation failed somewhere!";
#ifdef ARGS_NOEXCEPT
error = Error::Validation;
+ errorMsg = problem.str();
#else
- std::ostringstream problem;
- problem << "Group validation failed somewhere!";
throw ValidationError(problem.str());
#endif
}
@@ -2137,11 +2149,12 @@ namespace args
if (selectedCommand == nullptr && commandIsRequired && (Group::HasCommand() || subparserHasCommand))
{
+ std::ostringstream problem;
+ problem << "Command is required";
#ifdef ARGS_NOEXCEPT
error = Error::Validation;
+ errorMsg = problem.str();
#else
- std::ostringstream problem;
- problem << "Command is required";
throw ValidationError(problem.str());
#endif
}
@@ -2360,6 +2373,7 @@ namespace args
throw ParseError(errorMessage);
#else
error = Error::Parse;
+ errorMsg = errorMessage;
return false;
#endif
}
@@ -2376,10 +2390,12 @@ namespace args
}
} else
{
+ const std::string errorMessage("Flag could not be matched: " + arg);
#ifndef ARGS_NOEXCEPT
- throw ParseError("Flag could not be matched: " + arg);
+ throw ParseError(errorMessage);
#else
error = Error::Parse;
+ errorMsg = errorMessage;
return false;
#endif
}
@@ -2410,6 +2426,7 @@ namespace args
throw ParseError(errorMessage);
#else
error = Error::Parse;
+ errorMsg = errorMessage;
return false;
#endif
}
@@ -2431,10 +2448,12 @@ namespace args
}
} else
{
+ const std::string errorMessage("Flag could not be matched: '" + std::string(1, arg) + "'");
#ifndef ARGS_NOEXCEPT
- throw ParseError("Flag could not be matched: '" + std::string(1, arg) + "'");
+ throw ParseError(errorMessage);
#else
error = Error::Parse;
+ errorMsg = errorMessage;
return false;
#endif
}
@@ -2607,10 +2626,12 @@ namespace args
auto itCommand = std::find_if(commands.begin(), commands.end(), [&chunk](Command *c) { return c->Name() == chunk; });
if (itCommand == commands.end())
{
+ const std::string errorMessage("Unknown command: " + chunk);
#ifndef ARGS_NOEXCEPT
- throw ParseError("Unknown command: " + chunk);
+ throw ParseError(errorMessage);
#else
error = Error::Parse;
+ errorMsg = errorMessage;
return it;
#endif
}
@@ -2658,10 +2679,12 @@ namespace args
}
} else
{
+ const std::string errorMessage("Passed in argument, but no positional arguments were ready to receive it: " + chunk);
#ifndef ARGS_NOEXCEPT
- throw ParseError("Passed in argument, but no positional arguments were ready to receive it: " + chunk);
+ throw ParseError(errorMessage);
#else
error = Error::Parse;
+ errorMsg = errorMessage;
return it;
#endif
}
@@ -2796,10 +2819,12 @@ namespace args
{
if (longseparator_.empty())
{
+ const std::string errorMessage("longseparator can not be set to empty");
#ifdef ARGS_NOEXCEPT
error = Error::Usage;
+ errorMsg = errorMessage;
#else
- throw UsageError("longseparator can not be set to empty");
+ throw UsageError(errorMessage);
#endif
} else
{
@@ -3125,6 +3150,7 @@ namespace args
{
#ifdef ARGS_NOEXCEPT
error = Error::Help;
+ errorMsg = Name();
#else
throw Help(Name());
#endif
@@ -3638,11 +3664,12 @@ namespace args
auto it = map.find(key);
if (it == std::end(map))
{
+ std::ostringstream problem;
+ problem << "Could not find key '" << key << "' in map for arg '" << name << "'";
#ifdef ARGS_NOEXCEPT
error = Error::Map;
+ errorMsg = problem.str();
#else
- std::ostringstream problem;
- problem << "Could not find key '" << key << "' in map for arg '" << name << "'";
throw MapError(problem.str());
#endif
} else
@@ -3724,11 +3751,12 @@ namespace args
auto it = map.find(key);
if (it == std::end(map))
{
+ std::ostringstream problem;
+ problem << "Could not find key '" << key << "' in map for arg '" << name << "'";
#ifdef ARGS_NOEXCEPT
error = Error::Map;
+ errorMsg = problem.str();
#else
- std::ostringstream problem;
- problem << "Could not find key '" << key << "' in map for arg '" << name << "'";
throw MapError(problem.str());
#endif
} else
@@ -3988,11 +4016,12 @@ namespace args
auto it = map.find(key);
if (it == std::end(map))
{
+ std::ostringstream problem;
+ problem << "Could not find key '" << key << "' in map for arg '" << name << "'";
#ifdef ARGS_NOEXCEPT
error = Error::Map;
+ errorMsg = problem.str();
#else
- std::ostringstream problem;
- problem << "Could not find key '" << key << "' in map for arg '" << name << "'";
throw MapError(problem.str());
#endif
} else
@@ -4076,11 +4105,12 @@ namespace args
auto it = map.find(key);
if (it == std::end(map))
{
+ std::ostringstream problem;
+ problem << "Could not find key '" << key << "' in map for arg '" << name << "'";
#ifdef ARGS_NOEXCEPT
error = Error::Map;
+ errorMsg = problem.str();
#else
- std::ostringstream problem;
- problem << "Could not find key '" << key << "' in map for arg '" << name << "'";
throw MapError(problem.str());
#endif
} else
generated by cgit v1.2.1 (git 2.18.0) at 2025-10-25 15:04:17 +0000