ident: add the ability to provide a "fallback identity"
In 3bc2111fc2e9 (stash: tolerate missing user identity, 2018-11-18),
`git stash` learned to provide a fallback identity for the case that no
proper name/email was given (and `git stash` does not really care about
a correct identity anyway, but it does want to create a commit object).
In preparation for the same functionality in the upcoming built-in
version of `git stash`, let's offer the same functionality as an API
function.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
[tg: add docs; make it a bug to call the function before other
functions in the ident API]
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/ident.c b/ident.c
index 33bcf40..f30bd62 100644
--- a/ident.c
+++ b/ident.c
@@ -505,6 +505,28 @@ int git_ident_config(const char *var, const char *value, void *data)
return 0;
}
+static void set_env_if(const char *key, const char *value, int *given, int bit)
+{
+ if (*given & bit)
+ BUG("%s was checked before prepare_fallback got called", key);
+ if (getenv(key))
+ return; /* nothing to do */
+ setenv(key, value, 0);
+ *given |= bit;
+}
+
+void prepare_fallback_ident(const char *name, const char *email)
+{
+ set_env_if("GIT_AUTHOR_NAME", name,
+ &author_ident_explicitly_given, IDENT_NAME_GIVEN);
+ set_env_if("GIT_AUTHOR_EMAIL", email,
+ &author_ident_explicitly_given, IDENT_MAIL_GIVEN);
+ set_env_if("GIT_COMMITTER_NAME", name,
+ &committer_ident_explicitly_given, IDENT_NAME_GIVEN);
+ set_env_if("GIT_COMMITTER_EMAIL", email,
+ &committer_ident_explicitly_given, IDENT_MAIL_GIVEN);
+}
+
static int buf_cmp(const char *a_begin, const char *a_end,
const char *b_begin, const char *b_end)
{
