-#ifndef PATH_MAX
-# define PATH_MAX 4096
-#endif
-
-static const char git_usage[] =
- "Usage: git [--version] [--exec-path[=GIT_EXEC_PATH]] [--help] COMMAND [ ARGS ]";
-
-struct string_list {
- size_t len;
- char *str;
- struct string_list *next;
-};
-
-/* most gui terms 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;
-
- return 80;
-}
-
-static inline void mput_char(char c, unsigned int num)
-{
- while(num--)
- putchar(c);
-}
-
-static void pretty_print_string_list(struct string_list *list, int longest)
-{
- int cols = 1;
- int space = longest + 1; /* min 1 SP between words */
- int max_cols = term_columns() - 1; /* don't print *on* the edge */
-
- if (space < max_cols)
- cols = max_cols / space;
-
- while (list) {
- int c;
- printf(" ");
-
- for (c = cols; c && list; list = list->next) {
- printf("%s", list->str);
-
- if (--c)
- mput_char(' ', space - list->len);
- }
- putchar('\n');
- }
-}
-
-static void list_commands(const char *exec_path, const char *pattern)
-{
- struct string_list *list = NULL, *tail = NULL;
- unsigned int longest = 0, i;
- glob_t gl;
-
- if (chdir(exec_path) < 0) {
- printf("git: '%s': %s\n", exec_path, strerror(errno));
- exit(1);
- }
-
- i = glob(pattern, 0, NULL, &gl);
- switch(i) {
- case GLOB_NOSPACE:
- puts("Out of memory when running glob()");
- exit(2);
- case GLOB_ABORTED:
- printf("'%s': Read error: %s\n", exec_path, strerror(errno));
- exit(2);
- case GLOB_NOMATCH:
- printf("No git commands available in '%s'.\n", exec_path);
- printf("Do you need to specify --exec-path or set GIT_EXEC_PATH?\n");
- exit(1);
- }
-
- for (i = 0; i < gl.gl_pathc; i++) {
- int len = strlen(gl.gl_pathv[i] + 4);
-
- if (access(gl.gl_pathv[i], X_OK))
- continue;
-
- if (longest < len)
- longest = len;
-
- if (!tail)
- tail = list = malloc(sizeof(struct string_list));
- else {
- tail->next = malloc(sizeof(struct string_list));
- tail = tail->next;
- }
- tail->len = len;
- tail->str = gl.gl_pathv[i] + 4;
- tail->next = NULL;
- }
-
- printf("git commands available in '%s'\n", exec_path);
- printf("----------------------------");
- mput_char('-', strlen(exec_path));
- putchar('\n');
- pretty_print_string_list(list, longest);
- putchar('\n');
-}
-
-#ifdef __GNUC__
-static void usage(const char *exec_path, const char *fmt, ...)
- __attribute__((__format__(__printf__, 2, 3), __noreturn__));
-#endif
-static void usage(const char *exec_path, const char *fmt, ...)
-{
- if (fmt) {
- va_list ap;
-
- va_start(ap, fmt);
- printf("git: ");
- vprintf(fmt, ap);
- va_end(ap);
- putchar('\n');
- }
- else
- puts(git_usage);
-
- putchar('\n');
-
- if(exec_path)
- list_commands(exec_path, "git-*");
-
- exit(1);
-}