diff options
Diffstat (limited to 'git.c')
| -rw-r--r-- | git.c | 75 |
1 files changed, 59 insertions, 16 deletions
@@ -20,6 +20,43 @@ const char git_more_info_string[] = static struct startup_info git_startup_info; static int use_pager = -1; +static char orig_cwd[PATH_MAX]; +static const char *env_names[] = { + GIT_DIR_ENVIRONMENT, + GIT_WORK_TREE_ENVIRONMENT, + GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, + GIT_PREFIX_ENVIRONMENT +}; +static char *orig_env[4]; +static int saved_environment; + +static void save_env(void) +{ + int i; + if (saved_environment) + return; + saved_environment = 1; + if (!getcwd(orig_cwd, sizeof(orig_cwd))) + die_errno("cannot getcwd"); + for (i = 0; i < ARRAY_SIZE(env_names); i++) { + orig_env[i] = getenv(env_names[i]); + if (orig_env[i]) + orig_env[i] = xstrdup(orig_env[i]); + } +} + +static void restore_env(void) +{ + int i; + if (*orig_cwd && chdir(orig_cwd)) + die_errno("could not move to %s", orig_cwd); + for (i = 0; i < ARRAY_SIZE(env_names); i++) { + if (orig_env[i]) + setenv(env_names[i], orig_env[i], 1); + else + unsetenv(env_names[i]); + } +} static void commit_pager_choice(void) { switch (use_pager) { @@ -54,8 +91,7 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) /* * Check remaining flags. */ - if (starts_with(cmd, "--exec-path")) { - cmd += 11; + if (skip_prefix(cmd, "--exec-path", &cmd)) { if (*cmd == '=') git_set_argv_exec_path(cmd + 1); else { @@ -92,8 +128,8 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) *envchanged = 1; (*argv)++; (*argc)--; - } else if (starts_with(cmd, "--git-dir=")) { - setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1); + } else if (skip_prefix(cmd, "--git-dir=", &cmd)) { + setenv(GIT_DIR_ENVIRONMENT, cmd, 1); if (envchanged) *envchanged = 1; } else if (!strcmp(cmd, "--namespace")) { @@ -106,8 +142,8 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) *envchanged = 1; (*argv)++; (*argc)--; - } else if (starts_with(cmd, "--namespace=")) { - setenv(GIT_NAMESPACE_ENVIRONMENT, cmd + 12, 1); + } else if (skip_prefix(cmd, "--namespace=", &cmd)) { + setenv(GIT_NAMESPACE_ENVIRONMENT, cmd, 1); if (envchanged) *envchanged = 1; } else if (!strcmp(cmd, "--work-tree")) { @@ -120,8 +156,8 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) *envchanged = 1; (*argv)++; (*argc)--; - } else if (starts_with(cmd, "--work-tree=")) { - setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1); + } else if (skip_prefix(cmd, "--work-tree=", &cmd)) { + setenv(GIT_WORK_TREE_ENVIRONMENT, cmd, 1); if (envchanged) *envchanged = 1; } else if (!strcmp(cmd, "--bare")) { @@ -272,6 +308,7 @@ static int handle_alias(int *argcp, const char ***argv) * RUN_SETUP for reading from the configuration file. */ #define NEED_WORK_TREE (1<<3) +#define NO_SETUP (1<<4) struct cmd_struct { const char *cmd; @@ -352,7 +389,7 @@ static struct cmd_struct commands[] = { { "cherry", cmd_cherry, RUN_SETUP }, { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, - { "clone", cmd_clone }, + { "clone", cmd_clone, NO_SETUP }, { "column", cmd_column, RUN_SETUP_GENTLY }, { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, { "commit-tree", cmd_commit_tree, RUN_SETUP }, @@ -378,8 +415,8 @@ static struct cmd_struct commands[] = { { "hash-object", cmd_hash_object }, { "help", cmd_help }, { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY }, - { "init", cmd_init_db }, - { "init-db", cmd_init_db }, + { "init", cmd_init_db, NO_SETUP }, + { "init-db", cmd_init_db, NO_SETUP }, { "log", cmd_log, RUN_SETUP }, { "ls-files", cmd_ls_files, RUN_SETUP }, { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY }, @@ -484,6 +521,10 @@ static void handle_builtin(int argc, const char **argv) struct cmd_struct *p = commands+i; if (strcmp(p->cmd, cmd)) continue; + if (saved_environment && (p->option & NO_SETUP)) { + restore_env(); + break; + } exit(run_builtin(p, argc, argv)); } } @@ -539,7 +580,10 @@ static int run_argv(int *argcp, const char ***argv) * of overriding "git log" with "git show" by having * alias.log = show */ - if (done_alias || !handle_alias(argcp, argv)) + if (done_alias) + break; + save_env(); + if (!handle_alias(argcp, argv)) break; done_alias = 1; } @@ -578,8 +622,7 @@ int main(int argc, char **av) * So we just directly call the builtin handler, and die if * that one cannot handle it. */ - if (starts_with(cmd, "git-")) { - cmd += 4; + if (skip_prefix(cmd, "git-", &cmd)) { argv[0] = cmd; handle_builtin(argc, argv); die("cannot handle %s as a builtin", cmd); @@ -590,8 +633,8 @@ int main(int argc, char **av) argc--; handle_options(&argv, &argc, NULL); if (argc > 0) { - if (starts_with(argv[0], "--")) - argv[0] += 2; + /* translate --help and --version into commands */ + skip_prefix(argv[0], "--", &argv[0]); } else { /* The user didn't specify a command; give them help */ commit_pager_choice(); |