diff options
Diffstat (limited to 'git.c')
| -rw-r--r-- | git.c | 271 |
1 files changed, 172 insertions, 99 deletions
@@ -11,9 +11,13 @@ #include "git-compat-util.h" #include "exec_cmd.h" #include "cache.h" +#include "quote.h" #include "builtin.h" +const char git_usage_string[] = + "git [--version] [--exec-path[=GIT_EXEC_PATH]] [--help] COMMAND [ ARGS ]"; + static void prepend_to_path(const char *dir, int len) { const char *old_path = getenv("PATH"); @@ -34,6 +38,59 @@ static void prepend_to_path(const char *dir, int len) setenv("PATH", path, 1); } +static int handle_options(const char*** argv, int* argc) +{ + int handled = 0; + + while (*argc > 0) { + const char *cmd = (*argv)[0]; + if (cmd[0] != '-') + break; + + /* + * For legacy reasons, the "version" and "help" + * commands can be written with "--" prepended + * to make them look like flags. + */ + if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) + break; + + /* + * Check remaining flags. + */ + if (!strncmp(cmd, "--exec-path", 11)) { + cmd += 11; + if (*cmd == '=') + git_set_exec_path(cmd + 1); + else { + puts(git_exec_path()); + exit(0); + } + } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { + setup_pager(); + } else if (!strcmp(cmd, "--git-dir")) { + if (*argc < 1) + return -1; + setenv("GIT_DIR", (*argv)[1], 1); + (*argv)++; + (*argc)--; + } else if (!strncmp(cmd, "--git-dir=", 10)) { + setenv("GIT_DIR", cmd + 10, 1); + } else if (!strcmp(cmd, "--bare")) { + static char git_dir[1024]; + setenv("GIT_DIR", getcwd(git_dir, 1024), 1); + } else { + fprintf(stderr, "Unknown option: %s\n", cmd); + usage(git_usage_string); + } + + (*argv)++; + (*argc)--; + handled++; + } + return handled; +} + static const char *alias_command; static char *alias_string = NULL; @@ -102,37 +159,48 @@ static int handle_alias(int *argcp, const char ***argv) { int nongit = 0, ret = 0, saved_errno = errno; const char *subdir; + int count, option_count; + const char** new_argv; subdir = setup_git_directory_gently(&nongit); - if (!nongit) { - int count; - const char** new_argv; - - alias_command = (*argv)[0]; - git_config(git_alias_config); - if (alias_string) { - - count = split_cmdline(alias_string, &new_argv); - - if (count < 1) - die("empty alias for %s", alias_command); - if (!strcmp(alias_command, new_argv[0])) - die("recursive alias: %s", alias_command); - - /* insert after command name */ - if (*argcp > 1) { - new_argv = realloc(new_argv, sizeof(char*) * - (count + *argcp)); - memcpy(new_argv + count, *argv + 1, - sizeof(char*) * *argcp); + alias_command = (*argv)[0]; + git_config(git_alias_config); + if (alias_string) { + count = split_cmdline(alias_string, &new_argv); + option_count = handle_options(&new_argv, &count); + memmove(new_argv - option_count, new_argv, + count * sizeof(char *)); + new_argv -= option_count; + + if (count < 1) + die("empty alias for %s", alias_command); + + if (!strcmp(alias_command, new_argv[0])) + die("recursive alias: %s", alias_command); + + if (getenv("GIT_TRACE")) { + int i; + fprintf(stderr, "trace: alias expansion: %s =>", + alias_command); + for (i = 0; i < count; ++i) { + fputc(' ', stderr); + sq_quote_print(stderr, new_argv[i]); } + fputc('\n', stderr); + fflush(stderr); + } - *argv = new_argv; - *argcp += count - 1; + new_argv = realloc(new_argv, sizeof(char*) * + (count + *argcp + 1)); + /* insert after command name */ + memcpy(new_argv + count, *argv + 1, sizeof(char*) * *argcp); + new_argv[count+*argcp] = NULL; - ret = 1; - } + *argv = new_argv; + *argcp += count - 1; + + ret = 1; } if (subdir) @@ -145,50 +213,64 @@ static int handle_alias(int *argcp, const char ***argv) const char git_version_string[] = GIT_VERSION; +#define RUN_SETUP (1<<0) +#define USE_PAGER (1<<1) + static void handle_internal_command(int argc, const char **argv, char **envp) { const char *cmd = argv[0]; static struct cmd_struct { const char *cmd; - int (*fn)(int, const char **, char **); + int (*fn)(int, const char **, const char *); + int option; } commands[] = { - { "version", cmd_version }, - { "help", cmd_help }, - { "log", cmd_log }, - { "whatchanged", cmd_whatchanged }, - { "show", cmd_show }, - { "push", cmd_push }, - { "format-patch", cmd_format_patch }, + { "add", cmd_add, RUN_SETUP }, + { "apply", cmd_apply }, + { "cat-file", cmd_cat_file, RUN_SETUP }, + { "checkout-index", cmd_checkout_index, RUN_SETUP }, + { "check-ref-format", cmd_check_ref_format }, + { "commit-tree", cmd_commit_tree, RUN_SETUP }, { "count-objects", cmd_count_objects }, - { "diff", cmd_diff }, - { "grep", cmd_grep }, - { "rm", cmd_rm }, - { "add", cmd_add }, - { "rev-list", cmd_rev_list }, - { "init-db", cmd_init_db }, + { "diff", cmd_diff, RUN_SETUP }, + { "diff-files", cmd_diff_files, RUN_SETUP }, + { "diff-index", cmd_diff_index, RUN_SETUP }, + { "diff-stages", cmd_diff_stages, RUN_SETUP }, + { "diff-tree", cmd_diff_tree, RUN_SETUP }, + { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP }, + { "format-patch", cmd_format_patch, RUN_SETUP }, { "get-tar-commit-id", cmd_get_tar_commit_id }, - { "upload-tar", cmd_upload_tar }, - { "check-ref-format", cmd_check_ref_format }, - { "ls-files", cmd_ls_files }, - { "ls-tree", cmd_ls_tree }, - { "tar-tree", cmd_tar_tree }, - { "read-tree", cmd_read_tree }, - { "commit-tree", cmd_commit_tree }, - { "apply", cmd_apply }, - { "show-branch", cmd_show_branch }, - { "diff-files", cmd_diff_files }, - { "diff-index", cmd_diff_index }, - { "diff-stages", cmd_diff_stages }, - { "diff-tree", cmd_diff_tree }, - { "cat-file", cmd_cat_file }, - { "rev-parse", cmd_rev_parse }, - { "write-tree", cmd_write_tree }, - { "mailsplit", cmd_mailsplit }, + { "grep", cmd_grep, RUN_SETUP }, + { "help", cmd_help }, + { "init-db", cmd_init_db }, + { "log", cmd_log, RUN_SETUP | USE_PAGER }, + { "ls-files", cmd_ls_files, RUN_SETUP }, + { "ls-tree", cmd_ls_tree, RUN_SETUP }, { "mailinfo", cmd_mailinfo }, + { "mailsplit", cmd_mailsplit }, + { "mv", cmd_mv, RUN_SETUP }, + { "name-rev", cmd_name_rev, RUN_SETUP }, + { "pack-objects", cmd_pack_objects, RUN_SETUP }, + { "prune", cmd_prune, RUN_SETUP }, + { "prune-packed", cmd_prune_packed, RUN_SETUP }, + { "push", cmd_push, RUN_SETUP }, + { "read-tree", cmd_read_tree, RUN_SETUP }, + { "repo-config", cmd_repo_config }, + { "rev-list", cmd_rev_list, RUN_SETUP }, + { "rev-parse", cmd_rev_parse, RUN_SETUP }, + { "rm", cmd_rm, RUN_SETUP }, + { "show-branch", cmd_show_branch, RUN_SETUP }, + { "show", cmd_show, RUN_SETUP | USE_PAGER }, { "stripspace", cmd_stripspace }, - { "update-index", cmd_update_index }, - { "update-ref", cmd_update_ref }, - { "fmt-merge-msg", cmd_fmt_merge_msg } + { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, + { "tar-tree", cmd_tar_tree, RUN_SETUP }, + { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, + { "update-index", cmd_update_index, RUN_SETUP }, + { "update-ref", cmd_update_ref, RUN_SETUP }, + { "upload-tar", cmd_upload_tar }, + { "version", cmd_version }, + { "whatchanged", cmd_whatchanged, RUN_SETUP | USE_PAGER }, + { "write-tree", cmd_write_tree, RUN_SETUP }, + { "verify-pack", cmd_verify_pack }, }; int i; @@ -200,9 +282,27 @@ static void handle_internal_command(int argc, const char **argv, char **envp) for (i = 0; i < ARRAY_SIZE(commands); i++) { struct cmd_struct *p = commands+i; + const char *prefix; if (strcmp(p->cmd, cmd)) continue; - exit(p->fn(argc, argv, envp)); + + prefix = NULL; + if (p->option & RUN_SETUP) + prefix = setup_git_directory(); + if (p->option & USE_PAGER) + setup_pager(); + if (getenv("GIT_TRACE")) { + int i; + fprintf(stderr, "trace: built-in: git"); + for (i = 0; i < argc; ++i) { + fputc(' ', stderr); + sq_quote_print(stderr, argv[i]); + } + putc('\n', stderr); + fflush(stderr); + } + + exit(p->fn(argc, argv, prefix)); } } @@ -243,46 +343,19 @@ int main(int argc, const char **argv, char **envp) die("cannot handle %s internally", cmd); } - /* Default command: "help" */ - cmd = "help"; - /* Look for flags.. */ - while (argc > 1) { - cmd = *++argv; - argc--; - - if (strncmp(cmd, "--", 2)) - break; - - cmd += 2; - - /* - * For legacy reasons, the "version" and "help" - * commands can be written with "--" prepended - * to make them look like flags. - */ - if (!strcmp(cmd, "help")) - break; - if (!strcmp(cmd, "version")) - break; - - /* - * Check remaining flags (which by now must be - * "--exec-path", but maybe we will accept - * other arguments some day) - */ - if (!strncmp(cmd, "exec-path", 9)) { - cmd += 9; - if (*cmd == '=') { - git_set_exec_path(cmd + 1); - continue; - } - puts(git_exec_path()); - exit(0); - } - cmd_usage(0, NULL, NULL); + argv++; + argc--; + handle_options(&argv, &argc); + if (argc > 0) { + if (!strncmp(argv[0], "--", 2)) + argv[0] += 2; + } else { + /* Default command: "help" */ + argv[0] = "help"; + argc = 1; } - argv[0] = cmd; + cmd = argv[0]; /* * We search for git commands in the following order: @@ -313,7 +386,7 @@ int main(int argc, const char **argv, char **envp) } if (errno == ENOENT) - cmd_usage(0, exec_path, "'%s' is not a git-command", cmd); + help_unknown_cmd(cmd); fprintf(stderr, "Failed to run command '%s': %s\n", cmd, strerror(errno)); |