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Re: [PATCH/RFC] config: Add --null/-z option for null-delimted output

From
Jakub Narebski <jnareb@gmail.com>
Date
Jun 21, 2007, 23:56 UTC
Message-ID
<200706220156.01175.jnareb@gmail.com>
In-Reply-To
<11821227322913-git-send-email-frank@lichtenheld.de>
On Mon, 18 Jun 2007, Frank Lichtenheld wrote:
Show 8 quoted lines
> Use \n as delimiter between key and value and \0 as
> delimiter after each key/value pair. This should be
> easily parsable output.
> 
> Signed-off-by: Frank Lichtenheld <frank@lichtenheld.de>
> ---
>  builtin-config.c |   15 +++++++++++----
>  1 files changed, 11 insertions(+), 4 deletions(-)
No documentation. But this is an RFC.
 
>  Note the FIXME. Does anyone remember the reason why --get-regexp
>  and --list use different output format?
I don't know, but at least two scripts use --get-regexp, namely
git-remote and git-submodule. So we would have to be careful about
changing that.
 
I would be enough to add the following to your patch:
Show 6 quoted lines
> @@ -12,14 +12,16 @@ static int use_key_regexp;
>  static int do_all;
>  static int do_not_match;
>  static int seen;
> +static char delim = '=';
> +static char term = '\n';
  +static char key_delim = ' ';
>  static enum { T_RAW, T_INT, T_BOOL } type = T_RAW;
[...]
Show 5 quoted lines
> @@ -39,6 +41,7 @@ static int show_config(const char* key_, const char* value_)
>  		return 0;
>  
>  	if (show_keys)
> +		/* FIXME: not useful with --null */
  - 		printf("%s ", key_);
  + 		printf("%s%c", key_, key_delim);
>  	if (seen && !do_all)
>  		dup_error = 1;
[...]
Show 7 quoted lines
> @@ -155,6 +158,10 @@ int cmd_config(int argc, const char **argv, const char *prefix)
>  		}
>  		else if (!strcmp(argv[1], "--system"))
>  			setenv("GIT_CONFIG", ETC_GITCONFIG, 1);
> +		else if (!strcmp(argv[1], "--null") || !strcmp(argv[1], "-z")) {
> +			term = '\0';
> +			delim = '\n';
  +			key_delim = '\n';
> +		}
>  		else if (!strcmp(argv[1], "--rename-section")) {
>  			int ret;
>  			if (argc != 4)

By the way, I have tried to use git-config --null to redo config file parsing in gitweb, so one git-config call would be needed for all the config. I have noticed that --bool option description does not describe the observed behavior fully. For example it returns 'true' not only for '1', but for any integer != 0, including 0xdeadbeef.

By the way, the error message when key value _cannot_ be converted to the boolean is somewhat misleading:

  $ GIT_CONFIG=conftest git config --bool bool.key7
  fatal: bad config value for 'bool.key7' in conftest
-- 
Jakub Narebski
Poland
Previous: Jakub NarebskiNext: Frank Lichtenheld
Message 26 of 34 in “[RFC] Implementing git config handling in Git.pm”
  1. Frank LichtenheldMay 20, 2007
  2. Petr BaudisMay 20, 2007
  3. config: Add --quoted option to produce machine-parsable outputFrank Lichtenheld, May 21, 2007
  4. Junio C HamanoMay 21, 2007
  5. Johannes SchindelinMay 21, 2007
  6. Junio C HamanoMay 21, 2007
  7. Johannes SchindelinMay 21, 2007
  8. Jan HudecMay 21, 2007
  9. Frank LichtenheldMay 21, 2007
  10. Jakub NarebskiMay 21, 2007
  11. config: Add --null/-z option for null-delimted outputFrank Lichtenheld, Jun 17, 2007
  12. Johannes SchindelinJun 19, 2007
  13. Jakub NarebskiJun 19, 2007
  14. Frank LichtenheldJun 19, 2007
  15. Johannes SchindelinJun 19, 2007
  16. Junio C HamanoJun 19, 2007
  17. Frank LichtenheldJun 19, 2007
  18. Johannes SchindelinJun 19, 2007
  19. David KastrupJun 19, 2007
  20. Jakub NarebskiJun 19, 2007
  21. Frank LichtenheldJun 19, 2007
  22. Johannes SchindelinJun 19, 2007
  23. Frank LichtenheldJun 19, 2007
  24. Johannes SchindelinJun 20, 2007
  25. Jakub NarebskiJun 20, 2007
  26. Jakub NarebskiJun 21, 2007
  27. Frank LichtenheldJun 22, 2007
  28. 1/3 config: Complete documentation of --get-regexpFrank Lichtenheld, Jun 25, 2007
  29. 2/3 config: Change output of --get-regexp for valueless keysFrank Lichtenheld, Jun 25, 2007
  30. Junio C HamanoJun 27, 2007
  31. 3/3 config: Add --null/-z option for null-delimted outputFrank Lichtenheld, Jun 25, 2007
  32. Jakub NarebskiJun 25, 2007
  33. Frank LichtenheldJun 26, 2007
  34. Junio C HamanoJun 27, 2007

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