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#ifndef _CMDLINE_HXX_
#define _CMDLINE_HXX_
#include "defs.hxx"
//---------------------------------
/** Simple command line abstraction
*/
class CommandLine
{
public:
//################################
// Creation
//################################
CommandLine(size_t argc, char* argv[], const std::string& ArgPrefix = std::string("-"));
//################################
// Query
//################################
/** Return the argument count
*/
size_t get_arg_count() const;
/** Return an argument by index
This method doesn't skip argument
names if any, so if the second
argument is an argument name the
function nevertheless returns it.
@precond 0 <= Index < GetArgumentCount
@throws std::out_of_range exception
if the given index is to high
*/
std::string get_arg(size_t Index) const;
/** Returns all argument name found in the
command line. An argument will be identified
by a specified prefix. The standard prefix
is '-'.
If there are no argument names the returned
container is empty.
*/
StringListPtr_t get_arg_names() const;
/** Returns an argument by name. If there are
duplicate argument names in the command line,
the first one wins.
Argument name an the argument value must be separated
by spaces. If the argument value starts with an
argument prefix use quotes else the return value is
an empty string because the value will be interpreted
as the next argument name.
If an argument value contains spaces use quotes.
@precond GetArgumentNames() -> has element ArgumentName
@throws std::invalid_argument exception
if the specified argument could not be
found
*/
std::string get_arg(const std::string& ArgumentName) const;
//################################
// Command
//################################
/** Set the prefix used to identify arguments in
the command line.
@precond prefix is not empty
@throws std::invalid_argument exception if
the prefix is empty
*/
void set_arg_prefix(const std::string& Prefix);
private:
/** Returns whether a given argument is an argument name
*/
bool is_arg_name(const std::string& Argument) const;
private:
size_t m_argc;
char** m_argv;
std::string m_argprefix;
// prevent copy and assignment
private:
CommandLine(const CommandLine&);
CommandLine& operator=(const CommandLine&);
};
#endif
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