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run-command: refactor subprocess env preparation 

submodule.c has functionality that prepares the environment for running
a subprocess in a new repo. The lazy-fetching code (used in partial
clones) will need this in a subsequent commit, so move it to a more
central location.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jonathan Tan 2021-06-17 10:13:25 -07:00 committed by Junio C Hamano
parent 69bb2e1804
commit d1fa94356d
3 changed files with 24 additions and 16 deletions
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12
run-command.c
View File

@ -1892,3 +1892,15 @@ int run_auto_maintenance(int quiet)
return run_command(&maint);
}
void prepare_other_repo_env(struct strvec *env_array, const char *new_git_dir)
{
const char * const *var;
for (var = local_repo_env; *var; var++) {
if (strcmp(*var, CONFIG_DATA_ENVIRONMENT) &&
strcmp(*var, CONFIG_COUNT_ENVIRONMENT))
strvec_push(env_array, *var);
}
strvec_pushf(env_array, "%s=%s", GIT_DIR_ENVIRONMENT, new_git_dir);
}

10
run-command.h
View File

@ -483,4 +483,14 @@ int run_processes_parallel_tr2(int n, get_next_task_fn, start_failure_fn,
task_finished_fn, void *pp_cb,
const char *tr2_category, const char *tr2_label);
/**
* Convenience function which prepares env_array for a command to be run in a
* new repo. This adds all GIT_* environment variables to env_array with the
* exception of GIT_CONFIG_PARAMETERS and GIT_CONFIG_COUNT (which cause the
* corresponding environment variables to be unset in the subprocess) and adds
* an environment variable pointing to new_git_dir. See local_repo_env in
* cache.h for more information.
*/
void prepare_other_repo_env(struct strvec *env_array, const char *new_git_dir);
#endif

18
submodule.c
View File

@ -484,28 +484,14 @@ static void print_submodule_diff_summary(struct repository *r, struct rev_info *
strbuf_release(&sb);
}
static void prepare_submodule_repo_env_no_git_dir(struct strvec *out)
{
const char * const *var;
for (var = local_repo_env; *var; var++) {
if (strcmp(*var, CONFIG_DATA_ENVIRONMENT) &&
strcmp(*var, CONFIG_COUNT_ENVIRONMENT))
strvec_push(out, *var);
}
}
void prepare_submodule_repo_env(struct strvec *out)
{
prepare_submodule_repo_env_no_git_dir(out);
strvec_pushf(out, "%s=%s", GIT_DIR_ENVIRONMENT,
DEFAULT_GIT_DIR_ENVIRONMENT);
prepare_other_repo_env(out, DEFAULT_GIT_DIR_ENVIRONMENT);
}
static void prepare_submodule_repo_env_in_gitdir(struct strvec *out)
{
prepare_submodule_repo_env_no_git_dir(out);
strvec_pushf(out, "%s=.", GIT_DIR_ENVIRONMENT);
prepare_other_repo_env(out, ".");
}
/*