From f754fa9c5480c4556ad268fb5014c4b96cc7b9dc Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Fri, 4 Aug 2006 01:51:04 -0700 Subject: builtins: Makefile clean-up This cleans up the build procedure for built-in commands by: - generating mostly redundant definition of BUILT_INS from BUILTIN_OBJS in the Makefile, - renaming a few files to make the above possible, and - sorting the built-in command table in git.c. It might be a good idea to binary search (or perfect hash) the built-in command table, but that can be done later when somebody feels like. Signed-off-by: Junio C Hamano --- builtin-help.c | 234 --------------------------------------------------------- 1 file changed, 234 deletions(-) delete mode 100644 builtin-help.c (limited to 'builtin-help.c') diff --git a/builtin-help.c b/builtin-help.c deleted file mode 100644 index fb731cc93..000000000 --- a/builtin-help.c +++ /dev/null @@ -1,234 +0,0 @@ -/* - * builtin-help.c - * - * Builtin help-related commands (help, usage, version) - */ -#include -#include "cache.h" -#include "builtin.h" -#include "exec_cmd.h" -#include "common-cmds.h" - - -/* most GUI terminals set COLUMNS (although some don't export it) */ -static int term_columns(void) -{ - char *col_string = getenv("COLUMNS"); - int n_cols = 0; - - if (col_string && (n_cols = atoi(col_string)) > 0) - return n_cols; - -#ifdef TIOCGWINSZ - { - struct winsize ws; - if (!ioctl(1, TIOCGWINSZ, &ws)) { - if (ws.ws_col) - return ws.ws_col; - } - } -#endif - - return 80; -} - -static void oom(void) -{ - fprintf(stderr, "git: out of memory\n"); - exit(1); -} - -static inline void mput_char(char c, unsigned int num) -{ - while(num--) - putchar(c); -} - -static struct cmdname { - size_t len; - char name[1]; -} **cmdname; -static int cmdname_alloc, cmdname_cnt; - -static void add_cmdname(const char *name, int len) -{ - struct cmdname *ent; - if (cmdname_alloc <= cmdname_cnt) { - cmdname_alloc = cmdname_alloc + 200; - cmdname = realloc(cmdname, cmdname_alloc * sizeof(*cmdname)); - if (!cmdname) - oom(); - } - ent = malloc(sizeof(*ent) + len); - if (!ent) - oom(); - ent->len = len; - memcpy(ent->name, name, len); - ent->name[len] = 0; - cmdname[cmdname_cnt++] = ent; -} - -static int cmdname_compare(const void *a_, const void *b_) -{ - struct cmdname *a = *(struct cmdname **)a_; - struct cmdname *b = *(struct cmdname **)b_; - return strcmp(a->name, b->name); -} - -static void pretty_print_string_list(struct cmdname **cmdname, int longest) -{ - int cols = 1, rows; - int space = longest + 1; /* min 1 SP between words */ - int max_cols = term_columns() - 1; /* don't print *on* the edge */ - int i, j; - - if (space < max_cols) - cols = max_cols / space; - rows = (cmdname_cnt + cols - 1) / cols; - - qsort(cmdname, cmdname_cnt, sizeof(*cmdname), cmdname_compare); - - for (i = 0; i < rows; i++) { - printf(" "); - - for (j = 0; j < cols; j++) { - int n = j * rows + i; - int size = space; - if (n >= cmdname_cnt) - break; - if (j == cols-1 || n + rows >= cmdname_cnt) - size = 1; - printf("%-*s", size, cmdname[n]->name); - } - putchar('\n'); - } -} - -static void list_commands(const char *exec_path, const char *pattern) -{ - unsigned int longest = 0; - char path[PATH_MAX]; - int dirlen; - DIR *dir = opendir(exec_path); - struct dirent *de; - - if (!dir) { - fprintf(stderr, "git: '%s': %s\n", exec_path, strerror(errno)); - exit(1); - } - - dirlen = strlen(exec_path); - if (PATH_MAX - 20 < dirlen) { - fprintf(stderr, "git: insanely long exec-path '%s'\n", - exec_path); - exit(1); - } - - memcpy(path, exec_path, dirlen); - path[dirlen++] = '/'; - - while ((de = readdir(dir)) != NULL) { - struct stat st; - int entlen; - - if (strncmp(de->d_name, "git-", 4)) - continue; - strcpy(path+dirlen, de->d_name); - if (stat(path, &st) || /* stat, not lstat */ - !S_ISREG(st.st_mode) || - !(st.st_mode & S_IXUSR)) - continue; - - entlen = strlen(de->d_name); - if (4 < entlen && !strcmp(de->d_name + entlen - 4, ".exe")) - entlen -= 4; - - if (longest < entlen) - longest = entlen; - - add_cmdname(de->d_name + 4, entlen-4); - } - closedir(dir); - - printf("git commands available in '%s'\n", exec_path); - printf("----------------------------"); - mput_char('-', strlen(exec_path)); - putchar('\n'); - pretty_print_string_list(cmdname, longest - 4); - putchar('\n'); -} - -static void list_common_cmds_help(void) -{ - int i, longest = 0; - - for (i = 0; i < ARRAY_SIZE(common_cmds); i++) { - if (longest < strlen(common_cmds[i].name)) - longest = strlen(common_cmds[i].name); - } - - puts("The most commonly used git commands are:"); - for (i = 0; i < ARRAY_SIZE(common_cmds); i++) { - printf(" %s", common_cmds[i].name); - mput_char(' ', longest - strlen(common_cmds[i].name) + 4); - puts(common_cmds[i].help); - } - puts("(use 'git help -a' to get a list of all installed git commands)"); -} - -static void show_man_page(const char *git_cmd) -{ - const char *page; - - if (!strncmp(git_cmd, "git", 3)) - page = git_cmd; - else { - int page_len = strlen(git_cmd) + 4; - char *p = malloc(page_len + 1); - strcpy(p, "git-"); - strcpy(p + 4, git_cmd); - p[page_len] = 0; - page = p; - } - - execlp("man", "man", page, NULL); -} - -void help_unknown_cmd(const char *cmd) -{ - printf("git: '%s' is not a git-command\n\n", cmd); - list_common_cmds_help(); - exit(1); -} - -int cmd_version(int argc, const char **argv, const char *prefix) -{ - printf("git version %s\n", git_version_string); - return 0; -} - -int cmd_help(int argc, const char **argv, const char *prefix) -{ - const char *help_cmd = argc > 1 ? argv[1] : NULL; - const char *exec_path = git_exec_path(); - - if (!help_cmd) { - printf("usage: %s\n\n", git_usage_string); - list_common_cmds_help(); - exit(1); - } - - else if (!strcmp(help_cmd, "--all") || !strcmp(help_cmd, "-a")) { - printf("usage: %s\n\n", git_usage_string); - if(exec_path) - list_commands(exec_path, "git-*"); - exit(1); - } - - else - show_man_page(help_cmd); - - return 0; -} - - -- cgit v1.2.1