diff options
Diffstat (limited to 'git.c')
| -rw-r--r-- | git.c | 194 |
1 files changed, 113 insertions, 81 deletions
@@ -6,6 +6,46 @@ const char git_usage_string[] = "git [--version] [--exec-path[=GIT_EXEC_PATH]] [-p|--paginate|--no-pager] [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE] [--help] COMMAND [ARGS]"; +const char git_more_info_string[] = + "See 'git help COMMAND' for more information on a specific command."; + +static int use_pager = -1; +struct pager_config { + const char *cmd; + int val; +}; + +static int pager_command_config(const char *var, const char *value, void *data) +{ + struct pager_config *c = data; + if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) + c->val = git_config_bool(var, value); + return 0; +} + +/* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */ +int check_pager_config(const char *cmd) +{ + struct pager_config c; + c.cmd = cmd; + c.val = -1; + git_config(pager_command_config, &c); + return c.val; +} + +static void commit_pager_choice(void) { + switch (use_pager) { + case 0: + setenv("GIT_PAGER", "cat", 1); + break; + case 1: + setup_pager(); + break; + default: + break; + } +} + static int handle_options(const char*** argv, int* argc, int* envchanged) { int handled = 0; @@ -35,9 +75,9 @@ static int handle_options(const char*** argv, int* argc, int* envchanged) exit(0); } } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { - setup_pager(); + use_pager = 1; } else if (!strcmp(cmd, "--no-pager")) { - setenv("GIT_PAGER", "cat", 1); + use_pager = 0; if (envchanged) *envchanged = 1; } else if (!strcmp(cmd, "--git-dir")) { @@ -87,81 +127,20 @@ static int handle_options(const char*** argv, int* argc, int* envchanged) return handled; } -static const char *alias_command; -static char *alias_string; - -static int git_alias_config(const char *var, const char *value) -{ - if (!prefixcmp(var, "alias.") && !strcmp(var + 6, alias_command)) { - alias_string = xstrdup(value); - } - return 0; -} - -static int split_cmdline(char *cmdline, const char ***argv) -{ - int src, dst, count = 0, size = 16; - char quoted = 0; - - *argv = xmalloc(sizeof(char*) * size); - - /* split alias_string */ - (*argv)[count++] = cmdline; - for (src = dst = 0; cmdline[src];) { - char c = cmdline[src]; - if (!quoted && isspace(c)) { - cmdline[dst++] = 0; - while (cmdline[++src] - && isspace(cmdline[src])) - ; /* skip */ - if (count >= size) { - size += 16; - *argv = xrealloc(*argv, sizeof(char*) * size); - } - (*argv)[count++] = cmdline + dst; - } else if(!quoted && (c == '\'' || c == '"')) { - quoted = c; - src++; - } else if (c == quoted) { - quoted = 0; - src++; - } else { - if (c == '\\' && quoted != '\'') { - src++; - c = cmdline[src]; - if (!c) { - free(*argv); - *argv = NULL; - return error("cmdline ends with \\"); - } - } - cmdline[dst++] = c; - src++; - } - } - - cmdline[dst] = 0; - - if (quoted) { - free(*argv); - *argv = NULL; - return error("unclosed quote"); - } - - return count; -} - static int handle_alias(int *argcp, const char ***argv) { - int nongit = 0, envchanged = 0, ret = 0, saved_errno = errno; + int envchanged = 0, ret = 0, saved_errno = errno; const char *subdir; int count, option_count; const char** new_argv; + const char *alias_command; + char *alias_string; + int unused_nongit; - subdir = setup_git_directory_gently(&nongit); + subdir = setup_git_directory_gently(&unused_nongit); alias_command = (*argv)[0]; - git_config(git_alias_config); + alias_string = alias_lookup(alias_command); if (alias_string) { if (alias_string[0] == '!') { if (*argcp > 1) { @@ -247,8 +226,13 @@ static int run_command(struct cmd_struct *p, int argc, const char **argv) prefix = NULL; if (p->option & RUN_SETUP) prefix = setup_git_directory(); - if (p->option & USE_PAGER) - setup_pager(); + + if (use_pager == -1 && p->option & RUN_SETUP) + use_pager = check_pager_config(p->cmd); + if (use_pager == -1 && p->option & USE_PAGER) + use_pager = 1; + commit_pager_choice(); + if (p->option & NEED_WORK_TREE) setup_work_tree(); @@ -291,9 +275,10 @@ static void handle_internal_command(int argc, const char **argv) { "checkout-index", cmd_checkout_index, RUN_SETUP | NEED_WORK_TREE}, { "check-ref-format", cmd_check_ref_format }, - { "check-attr", cmd_check_attr, RUN_SETUP | NEED_WORK_TREE }, + { "check-attr", cmd_check_attr, RUN_SETUP }, { "cherry", cmd_cherry, RUN_SETUP }, { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, + { "clone", cmd_clone }, { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, { "commit-tree", cmd_commit_tree, RUN_SETUP }, @@ -301,7 +286,7 @@ static void handle_internal_command(int argc, const char **argv) { "count-objects", cmd_count_objects, RUN_SETUP }, { "describe", cmd_describe, RUN_SETUP }, { "diff", cmd_diff }, - { "diff-files", cmd_diff_files }, + { "diff-files", cmd_diff_files, RUN_SETUP }, { "diff-index", cmd_diff_index, RUN_SETUP }, { "diff-tree", cmd_diff_tree, RUN_SETUP }, { "fast-export", cmd_fast_export, RUN_SETUP }, @@ -328,10 +313,12 @@ static void handle_internal_command(int argc, const char **argv) { "ls-remote", cmd_ls_remote }, { "mailinfo", cmd_mailinfo }, { "mailsplit", cmd_mailsplit }, + { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, { "merge-base", cmd_merge_base, RUN_SETUP }, { "merge-file", cmd_merge_file }, { "merge-ours", cmd_merge_ours, RUN_SETUP }, { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, + { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE }, { "name-rev", cmd_name_rev, RUN_SETUP }, { "pack-objects", cmd_pack_objects, RUN_SETUP }, @@ -342,6 +329,7 @@ static void handle_internal_command(int argc, const char **argv) { "push", cmd_push, RUN_SETUP }, { "read-tree", cmd_read_tree, RUN_SETUP }, { "reflog", cmd_reflog, RUN_SETUP }, + { "remote", cmd_remote, RUN_SETUP }, { "repo-config", cmd_config }, { "rerere", cmd_rerere, RUN_SETUP }, { "reset", cmd_reset, RUN_SETUP }, @@ -350,7 +338,7 @@ static void handle_internal_command(int argc, const char **argv) { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE }, { "rm", cmd_rm, RUN_SETUP }, { "send-pack", cmd_send_pack, RUN_SETUP }, - { "shortlog", cmd_shortlog, RUN_SETUP | USE_PAGER }, + { "shortlog", cmd_shortlog, USE_PAGER }, { "show-branch", cmd_show_branch, RUN_SETUP }, { "show", cmd_show, RUN_SETUP | USE_PAGER }, { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, @@ -371,6 +359,16 @@ static void handle_internal_command(int argc, const char **argv) { "pack-refs", cmd_pack_refs, RUN_SETUP }, }; int i; + static const char ext[] = STRIP_EXTENSION; + + if (sizeof(ext) > 1) { + i = strlen(argv[0]) - strlen(ext); + if (i > 0 && !strcmp(argv[0] + i, ext)) { + char *argv0 = strdup(argv[0]); + argv[0] = cmd = argv0; + argv0[i] = '\0'; + } + } /* Turn "git cmd --help" into "git help cmd" */ if (argc > 1 && !strcmp(argv[1], "--help")) { @@ -386,11 +384,40 @@ static void handle_internal_command(int argc, const char **argv) } } +static void execv_dashed_external(const char **argv) +{ + struct strbuf cmd; + const char *tmp; + + strbuf_init(&cmd, 0); + 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; + + trace_argv_printf(argv, "trace: exec:"); + + /* execvp() can only ever return if it fails */ + execvp(cmd.buf, (char **)argv); + + trace_printf("trace: exec failed: %s\n", strerror(errno)); + + argv[0] = tmp; + + strbuf_release(&cmd); +} + + int main(int argc, const char **argv) { - const char *cmd = argv[0] ? argv[0] : "git-help"; - char *slash = strrchr(cmd, '/'); - const char *cmd_path = NULL; + const char *cmd = argv[0] && *argv[0] ? argv[0] : "git-help"; + char *slash = (char *)cmd + strlen(cmd); int done_alias = 0; /* @@ -398,9 +425,12 @@ int main(int argc, const char **argv) * name, and the dirname as the default exec_path * if we don't have anything better. */ - if (slash) { + do + --slash; + while (cmd <= slash && !is_dir_sep(*slash)); + if (cmd <= slash) { *slash++ = 0; - cmd_path = cmd; + git_set_argv0_path(cmd); cmd = slash; } @@ -425,6 +455,7 @@ int main(int argc, const char **argv) argv++; argc--; handle_options(&argv, &argc, NULL); + commit_pager_choice(); if (argc > 0) { if (!prefixcmp(argv[0], "--")) argv[0] += 2; @@ -432,6 +463,7 @@ int main(int argc, const char **argv) /* The user didn't specify a command; give them help */ printf("usage: %s\n\n", git_usage_string); list_common_cmds_help(); + printf("\n%s\n", git_more_info_string); exit(1); } cmd = argv[0]; @@ -442,14 +474,14 @@ int main(int argc, const char **argv) * environment, and the $(gitexecdir) from the Makefile at build * time. */ - setup_path(cmd_path); + setup_path(); while (1) { /* See if it's an internal command */ handle_internal_command(argc, argv); /* .. then try the external ones */ - execv_git_cmd(argv); + execv_dashed_external(argv); /* It could be an alias -- this works around the insanity * of overriding "git log" with "git show" by having |