On 7/28/2014 4:25 PM, Ramsay Jones wrote:
> On 28/07/14 11:33, Tanay Abhra wrote:
>> Add `git_die_config` that dies printing the line number and the file name
>> of the highest priority value for the configuration variable `key`.
>>
>> It has usage in non-callback based config value retrieval where we can
>> raise an error and die if there is a semantic error.
>> For example,
>>
>> if (!git_config_get_value(key, &value)) {
>> /* NULL values not allowed */
>> if (!value)
>> git_config_die(key);
>> else
>> /* do work */
>> }
>>
>> Signed-off-by: Tanay Abhra <[email protected]>
>> ---
>> Note: git_config_get_string() calls git_config_get_string_const(),
>> so no need to check for whether to die or not, as it is done by
>> git_config_get_string_const().
>>
>> Documentation/technical/api-config.txt | 5 +++++
>> cache.h | 1 +
>> config.c | 24 ++++++++++++++++++++++--
>> 3 files changed, 28 insertions(+), 2 deletions(-)
>>
>> diff --git a/Documentation/technical/api-config.txt
>> b/Documentation/technical/api-config.txt
>> index 815c1ee..e7ec7cc 100644
>> --- a/Documentation/technical/api-config.txt
>> +++ b/Documentation/technical/api-config.txt
>> @@ -155,6 +155,11 @@ as well as retrieval for the queried variable,
>> including:
>> Similar to `git_config_get_string`, but expands `~` or `~user` into
>> the user's home directory when found at the beginning of the path.
>>
>> +`void git_die_config(const char *key)`::
>> +
>> + Dies printing the line number and the file name of the highest
>> + priority value for the configuration variable `key`.
>> +
>> See test-config.c for usage examples.
>>
>> Value Parsing Helpers
>> diff --git a/cache.h b/cache.h
>> index 93bdbab..8512225 100644
>> --- a/cache.h
>> +++ b/cache.h
>> @@ -1406,6 +1406,7 @@ extern int git_config_get_bool(const char *key, int
>> *dest);
>> extern int git_config_get_bool_or_int(const char *key, int *is_bool, int
>> *dest);
>> extern int git_config_get_maybe_bool(const char *key, int *dest);
>> extern int git_config_get_pathname(const char *key, const char **dest);
>> +extern void git_die_config(const char *key);
>>
>> extern int committer_ident_sufficiently_given(void);
>> extern int author_ident_sufficiently_given(void);
>> diff --git a/config.c b/config.c
>> index 2ce3318..136ee9c 100644
>> --- a/config.c
>> +++ b/config.c
>> @@ -1505,8 +1505,12 @@ const struct string_list
>> *git_config_get_value_multi(const char *key)
>>
>> int git_config_get_string_const(const char *key, const char **dest)
>> {
>> + int ret;
>> git_config_check_init();
>> - return git_configset_get_string_const(&the_config_set, key, dest);
>> + ret = git_configset_get_string_const(&the_config_set, key, dest);
>> + if (ret < 0)
>> + git_die_config(key);
>> + return ret;
>> }
>>
>> int git_config_get_string(const char *key, char **dest)
>> @@ -1547,10 +1551,26 @@ int git_config_get_maybe_bool(const char *key, int
>> *dest)
>>
>> int git_config_get_pathname(const char *key, const char **dest)
>> {
>> + int ret;
>> git_config_check_init();
>> - return git_configset_get_pathname(&the_config_set, key, dest);
>> + ret = git_configset_get_pathname(&the_config_set, key, dest);
>> + if (ret < 0)
>> + git_die_config(key);
>> + return ret;
>> }
>>
>> +void git_die_config(const char *key)
>> +{
>> + const struct string_list *values;
>> + struct key_value_info *kv_info;
>> + values = git_config_get_value_multi(key);
>> + kv_info = values->items[values->nr - 1].util;
>> + if (!kv_info->linenr)
>> + die("unable to parse command-line config");
>> + else
>> + die("bad config file line %d in %s",kv_info->linenr,
>> kv_info->filename);
>
> How about including the 'key' string in the error message?
> Similar comment applies to an earlier patch in this series.
>
git_config_get_string & pathname() are already raising a
config_error_nonbool() with the error message,
"Missing value for 'key'".
For other cases, I was just following the previous error message,
but it can be done for the new git_config().
Thanks.
>> + }
>> +
>> /*
>> * Find all the stuff for git_config_set() below.
>> */
>>
>
> ATB,
> Ramsay Jones
>
>
>
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