diff options
Diffstat (limited to 'git.c')
| -rw-r--r-- | git.c | 176 |
1 files changed, 95 insertions, 81 deletions
@@ -1,4 +1,5 @@ #include "builtin.h" +#include "config.h" #include "exec_cmd.h" #include "help.h" #include "run-command.h" @@ -16,50 +17,8 @@ const char git_more_info_string[] = "to read about a specific subcommand or concept."); static int use_pager = -1; -static char *orig_cwd; -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 save_restore_env_balance; - -static void save_env_before_alias(void) -{ - int i; - - assert(save_restore_env_balance == 0); - save_restore_env_balance = 1; - orig_cwd = xgetcwd(); - for (i = 0; i < ARRAY_SIZE(env_names); i++) { - orig_env[i] = getenv(env_names[i]); - orig_env[i] = xstrdup_or_null(orig_env[i]); - } -} -static void restore_env(int external_alias) -{ - int i; - - assert(save_restore_env_balance == 1); - save_restore_env_balance = 0; - if (!external_alias && orig_cwd && chdir(orig_cwd)) - die_errno("could not move to %s", orig_cwd); - free(orig_cwd); - for (i = 0; i < ARRAY_SIZE(env_names); i++) { - if (external_alias && - !strcmp(env_names[i], GIT_PREFIX_ENVIRONMENT)) - continue; - if (orig_env[i]) { - setenv(env_names[i], orig_env[i], 1); - free(orig_env[i]); - } else { - unsetenv(env_names[i]); - } - } -} +static void list_builtins(void); static void commit_pager_choice(void) { switch (use_pager) { @@ -74,6 +33,16 @@ static void commit_pager_choice(void) { } } +void setup_auto_pager(const char *cmd, int def) +{ + if (use_pager != -1 || pager_in_use()) + return; + use_pager = check_pager_config(cmd); + if (use_pager == -1) + use_pager = def; + commit_pager_choice(); +} + static int handle_options(const char ***argv, int *argc, int *envchanged) { const char **orig_argv = *argv; @@ -163,6 +132,20 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) setenv(GIT_WORK_TREE_ENVIRONMENT, cmd, 1); if (envchanged) *envchanged = 1; + } else if (!strcmp(cmd, "--super-prefix")) { + if (*argc < 2) { + fprintf(stderr, "No prefix given for --super-prefix.\n" ); + usage(git_usage_string); + } + setenv(GIT_SUPER_PREFIX_ENVIRONMENT, (*argv)[1], 1); + if (envchanged) + *envchanged = 1; + (*argv)++; + (*argc)--; + } else if (skip_prefix(cmd, "--super-prefix=", &cmd)) { + setenv(GIT_SUPER_PREFIX_ENVIRONMENT, cmd, 1); + if (envchanged) + *envchanged = 1; } else if (!strcmp(cmd, "--bare")) { char *cwd = xgetcwd(); is_bare_repository_cfg = 1; @@ -199,6 +182,10 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) setenv(GIT_ICASE_PATHSPECS_ENVIRONMENT, "1", 1); if (envchanged) *envchanged = 1; + } else if (!strcmp(cmd, "--no-optional-locks")) { + setenv(GIT_OPTIONAL_LOCKS_ENVIRONMENT, "0", 1); + if (envchanged) + *envchanged = 1; } else if (!strcmp(cmd, "--shallow-file")) { (*argv)++; (*argc)--; @@ -218,6 +205,9 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) } (*argv)++; (*argc)--; + } else if (!strcmp(cmd, "--list-builtins")) { + list_builtins(); + exit(0); } else { fprintf(stderr, "Unknown option: %s\n", cmd); usage(git_usage_string); @@ -236,19 +226,18 @@ static int handle_alias(int *argcp, const char ***argv) const char **new_argv; const char *alias_command; char *alias_string; - int unused_nongit; - - save_env_before_alias(); - setup_git_directory_gently(&unused_nongit); alias_command = (*argv)[0]; alias_string = alias_lookup(alias_command); if (alias_string) { if (alias_string[0] == '!') { struct child_process child = CHILD_PROCESS_INIT; + int nongit_ok; + + /* Aliases expect GIT_PREFIX, GIT_DIR etc to be set */ + setup_git_directory_gently(&nongit_ok); commit_pager_choice(); - restore_env(1); child.use_shell = 1; argv_array_push(&child.args, alias_string + 1); @@ -294,8 +283,6 @@ static int handle_alias(int *argcp, const char ***argv) ret = 1; } - restore_env(0); - errno = saved_errno; return ret; @@ -309,6 +296,8 @@ static int handle_alias(int *argcp, const char ***argv) * RUN_SETUP for reading from the configuration file. */ #define NEED_WORK_TREE (1<<3) +#define SUPPORT_SUPER_PREFIX (1<<4) +#define DELAY_PAGER_CONFIG (1<<5) struct cmd_struct { const char *cmd; @@ -332,7 +321,8 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv) prefix = setup_git_directory_gently(&nongit_ok); } - if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) + if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY) && + !(p->option & DELAY_PAGER_CONFIG)) use_pager = check_pager_config(p->cmd); if (use_pager == -1 && p->option & USE_PAGER) use_pager = 1; @@ -343,6 +333,11 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv) } commit_pager_choice(); + if (!help && get_super_prefix()) { + if (!(p->option & SUPPORT_SUPER_PREFIX)) + die("%s doesn't support --super-prefix", p->cmd); + } + if (!help && p->option & NEED_WORK_TREE) setup_work_tree(); @@ -374,10 +369,10 @@ static struct cmd_struct commands[] = { { "am", cmd_am, RUN_SETUP | NEED_WORK_TREE }, { "annotate", cmd_annotate, RUN_SETUP }, { "apply", cmd_apply, RUN_SETUP_GENTLY }, - { "archive", cmd_archive }, + { "archive", cmd_archive, RUN_SETUP_GENTLY }, { "bisect--helper", cmd_bisect__helper, RUN_SETUP }, { "blame", cmd_blame, RUN_SETUP }, - { "branch", cmd_branch, RUN_SETUP }, + { "branch", cmd_branch, RUN_SETUP | DELAY_PAGER_CONFIG }, { "bundle", cmd_bundle, RUN_SETUP_GENTLY }, { "cat-file", cmd_cat_file, RUN_SETUP }, { "check-attr", cmd_check_attr, RUN_SETUP }, @@ -402,6 +397,7 @@ static struct cmd_struct commands[] = { { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE }, { "diff-index", cmd_diff_index, RUN_SETUP }, { "diff-tree", cmd_diff_tree, RUN_SETUP }, + { "difftool", cmd_difftool, RUN_SETUP | NEED_WORK_TREE }, { "fast-export", cmd_fast_export, RUN_SETUP }, { "fetch", cmd_fetch, RUN_SETUP }, { "fetch-pack", cmd_fetch_pack, RUN_SETUP }, @@ -423,7 +419,7 @@ static struct cmd_struct commands[] = { { "ls-files", cmd_ls_files, RUN_SETUP }, { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY }, { "ls-tree", cmd_ls_tree, RUN_SETUP }, - { "mailinfo", cmd_mailinfo }, + { "mailinfo", cmd_mailinfo, RUN_SETUP_GENTLY }, { "mailsplit", cmd_mailsplit }, { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, { "merge-base", cmd_merge_base, RUN_SETUP }, @@ -443,13 +439,14 @@ static struct cmd_struct commands[] = { { "pack-objects", cmd_pack_objects, RUN_SETUP }, { "pack-redundant", cmd_pack_redundant, RUN_SETUP }, { "pack-refs", cmd_pack_refs, RUN_SETUP }, - { "patch-id", cmd_patch_id }, + { "patch-id", cmd_patch_id, RUN_SETUP_GENTLY }, { "pickaxe", cmd_blame, RUN_SETUP }, { "prune", cmd_prune, RUN_SETUP }, { "prune-packed", cmd_prune_packed, RUN_SETUP }, { "pull", cmd_pull, RUN_SETUP | NEED_WORK_TREE }, { "push", cmd_push, RUN_SETUP }, - { "read-tree", cmd_read_tree, RUN_SETUP }, + { "read-tree", cmd_read_tree, RUN_SETUP | SUPPORT_SUPER_PREFIX}, + { "rebase--helper", cmd_rebase__helper, RUN_SETUP | NEED_WORK_TREE }, { "receive-pack", cmd_receive_pack }, { "reflog", cmd_reflog, RUN_SETUP }, { "remote", cmd_remote, RUN_SETUP }, @@ -471,9 +468,9 @@ static struct cmd_struct commands[] = { { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE }, { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, { "stripspace", cmd_stripspace }, - { "submodule--helper", cmd_submodule__helper, RUN_SETUP }, + { "submodule--helper", cmd_submodule__helper, RUN_SETUP | SUPPORT_SUPER_PREFIX}, { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, - { "tag", cmd_tag, RUN_SETUP }, + { "tag", cmd_tag, RUN_SETUP | DELAY_PAGER_CONFIG }, { "unpack-file", cmd_unpack_file, RUN_SETUP }, { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, { "update-index", cmd_update_index, RUN_SETUP }, @@ -507,6 +504,13 @@ int is_builtin(const char *s) return !!get_builtin(s); } +static void list_builtins(void) +{ + int i; + for (i = 0; i < ARRAY_SIZE(commands); i++) + printf("%s\n", commands[i].cmd); +} + #ifdef STRIP_EXTENSION static void strip_extension(const char **argv) { @@ -521,57 +525,67 @@ static void strip_extension(const char **argv) static void handle_builtin(int argc, const char **argv) { + struct argv_array args = ARGV_ARRAY_INIT; const char *cmd; struct cmd_struct *builtin; strip_extension(argv); cmd = argv[0]; - /* Turn "git cmd --help" into "git help cmd" */ + /* Turn "git cmd --help" into "git help --exclude-guides cmd" */ if (argc > 1 && !strcmp(argv[1], "--help")) { + int i; + argv[1] = argv[0]; argv[0] = cmd = "help"; + + for (i = 0; i < argc; i++) { + argv_array_push(&args, argv[i]); + if (!i) + argv_array_push(&args, "--exclude-guides"); + } + + argc++; + argv = args.argv; } builtin = get_builtin(cmd); if (builtin) exit(run_builtin(builtin, argc, argv)); + argv_array_clear(&args); } static void execv_dashed_external(const char **argv) { - struct strbuf cmd = STRBUF_INIT; - const char *tmp; + struct child_process cmd = CHILD_PROCESS_INIT; int status; - if (use_pager == -1) + if (get_super_prefix()) + die("%s doesn't support --super-prefix", argv[0]); + + if (use_pager == -1 && !is_builtin(argv[0])) use_pager = check_pager_config(argv[0]); commit_pager_choice(); - strbuf_addf(&cmd, "git-%s", argv[0]); - - /* - * argv[0] must be the git command, but the argv array - * belongs to the caller, and may be reused in - * subsequent loop iterations. Save argv[0] and - * restore it on error. - */ - tmp = argv[0]; - argv[0] = cmd.buf; + argv_array_pushf(&cmd.args, "git-%s", argv[0]); + argv_array_pushv(&cmd.args, argv + 1); + cmd.clean_on_exit = 1; + cmd.wait_after_clean = 1; + cmd.silent_exec_failure = 1; - trace_argv_printf(argv, "trace: exec:"); + trace_argv_printf(cmd.args.argv, "trace: exec:"); /* - * if we fail because the command is not found, it is - * OK to return. Otherwise, we just pass along the status code. + * If we fail because the command is not found, it is + * OK to return. Otherwise, we just pass along the status code, + * or our usual generic code if we were not even able to exec + * the program. */ - status = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE | RUN_CLEAN_ON_EXIT); - if (status >= 0 || errno != ENOENT) + status = run_command(&cmd); + if (status >= 0) exit(status); - - argv[0] = tmp; - - strbuf_release(&cmd); + else if (errno != ENOENT) + exit(128); } static int run_argv(int *argcp, const char ***argv) |