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 <tanayabh@xxxxxxxxx>
---
Documentation/technical/api-config.txt | 5 +++++
cache.h | 1 +
config.c | 27 +++++++++++++++++++++++++--
3 files changed, 31 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 4d3c6bd..243f618 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 6b4dd65..15fcd91 100644
--- a/config.c
+++ b/config.c
@@ -1515,8 +1515,12 @@ 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)
@@ -1557,10 +1561,29 @@ 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 '%s' from command-line config"), key);
+ else
+ die(_("bad config variable '%s' at file line %d in %s"),
+ key,
+ kv_info->linenr,
+ kv_info->filename);
+ }
+
/*
* Find all the stuff for git_config_set() below.
*/
--
1.9.0.GIT
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