From fd5a58477c62ddb6ec16cf7b5b2da7597f0fa398 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 25 Feb 2019 23:16:08 +0000 Subject: 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 [tg: add docs; make it a bug to call the function before other functions in the ident API] Signed-off-by: Thomas Gummerer Signed-off-by: Junio C Hamano --- ident.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'ident.c') diff --git a/ident.c b/ident.c index 33bcf40644..f30bd623f0 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) { -- cgit v1.2.3