Re: Allowing string value with getopt without requiring it
On Friday, 13 December 2013 at 01:51:25 UTC, Ithy wrote: Hello. I'm just getting into D (literally writing my first program), and I can't figure out how to do this with getopt: I want to have the option --log, which will enable logging (set a bool variable to true). However, I want the program to also accept --log=filename to allow the user to define custom log file. If --log is used without filename, a default file will be used. I tried this: getopt(args, log, log, log, logFile); Passing just --log to the program works fine, the boolean is set to true. However, using --log=test.log throws an exception, and seemingly getopt expects either true or false. How would I go about implementing this without creating another option like --log-file for custom file name? That doesn't seem possible with getopt. I would use std.getopt.config.passThrough and then deal with the log option manually afterwards.
Re: Allowing string value with getopt without requiring it
On Fri, Dec 13, 2013 at 10:46:57AM +0100, John Colvin wrote: On Friday, 13 December 2013 at 01:51:25 UTC, Ithy wrote: Hello. I'm just getting into D (literally writing my first program), and I can't figure out how to do this with getopt: I want to have the option --log, which will enable logging (set a bool variable to true). However, I want the program to also accept --log=filename to allow the user to define custom log file. If --log is used without filename, a default file will be used. I tried this: getopt(args, log, log, log, logFile); Passing just --log to the program works fine, the boolean is set to true. However, using --log=test.log throws an exception, and seemingly getopt expects either true or false. How would I go about implementing this without creating another option like --log-file for custom file name? That doesn't seem possible with getopt. I would use std.getopt.config.passThrough and then deal with the log option manually afterwards. I would file an enhancement request in the bugtracker. This is a pretty common idiom in command-line parsing. http://d.puremagic.com/issues/ T -- We are in class, we are supposed to be learning, we have a teacher... Is it too much that I expect him to teach me??? -- RL
Allowing string value with getopt without requiring it
Hello. I'm just getting into D (literally writing my first program), and I can't figure out how to do this with getopt: I want to have the option --log, which will enable logging (set a bool variable to true). However, I want the program to also accept --log=filename to allow the user to define custom log file. If --log is used without filename, a default file will be used. I tried this: getopt(args, log, log, log, logFile); Passing just --log to the program works fine, the boolean is set to true. However, using --log=test.log throws an exception, and seemingly getopt expects either true or false. How would I go about implementing this without creating another option like --log-file for custom file name?
