2 * Copyright notice from original mutt:
3 * Copyright (C) 1996-2000 Michael R. Elkins <me@mutt.org>
5 * This file is part of mutt-ng, see http://www.muttng.org/.
6 * It's licensed under the GNU General Public License,
7 * please see the file GPL in the top level source directory.
12 #include <lib-lib/lib-lib.h>
14 #include <lib-ui/lib-ui.h>
21 static struct binding_t *help_lookupFunction (int op, int menu)
24 struct binding_t *map;
26 if (menu != MENU_PAGER) {
27 /* first look in the generic map for the function */
28 for (i = 0; OpGeneric[i].name; i++)
29 if (OpGeneric[i].op == op)
33 if ((map = km_get_table (menu))) {
34 for (i = 0; map[i].name; i++)
42 static int print_macro (FILE * f, int maxwidth, const char **macro)
48 ssize_t len = m_strlen(*macro);
49 mbstate_t mbstate1, mbstate2;
51 p_clear(&mbstate1, 1);
52 p_clear(&mbstate2, 1);
53 for (; len && (k = mbrtowc (&wc, *macro, len, &mbstate1));
54 *macro += k, len -= k) {
55 if (k == -1 || k == -2) {
56 k = (k == -1) ? 1 : len;
57 wc = CharsetReplacement;
59 /* glibc-2.1.3's wcwidth() returns 1 for unprintable chars! */
60 if (iswprint(wc) && (w = wcwidth (wc)) >= 0) {
65 char buf[MB_LEN_MAX * 2];
68 if ((n1 = wcrtomb(buf, wc, &mbstate2)) != -1 &&
69 (n2 = wcrtomb(buf + n1, 0, &mbstate2)) != -1)
73 else if (wc < 0x20 || wc == 0x7f) {
86 fprintf (f, "^%c", (char) ((wc + '@') & 0x7f));
98 static int pad (FILE * f, int col, int i)
103 snprintf (fmt, sizeof (fmt), "%%-%ds", i - col);
104 fprintf (f, fmt, "");
111 static void help_format_line (FILE * f, int ismacro,
112 const char *t1, const char *t2, const char *t3)
121 /* don't try to press string into one line with less than 40 characters. */
122 if ((split = getmaxx(main_w) < 40)) {
128 col_a = getmaxx(main_w) > 83 ? (getmaxx(main_w) - 32) >> 2 : 12;
129 col_b = getmaxx(main_w) > 49 ? (getmaxx(main_w) - 10) >> 1 : 19;
130 col = pad (f, m_strlen(t1), col_a);
134 fputs ("_\010M ", f);
138 col += print_macro (f, col_b - col - 4, &t2);
139 if (m_strlen(t2) > col_b - col)
144 col += print_macro (f, col_b - col - 1, &t2);
148 col = pad (f, col, col_b);
151 print_macro (f, LONG_STRING, &t3);
156 n = getmaxx(main_w) - col;
159 t3 = vskipspaces(t3);
161 /* FIXME: this is completely wrong */
162 if ((n = m_strlen(t3)) > getmaxx(main_w) - col) {
163 n = getmaxx(main_w) - col;
164 for (col_a = n; col_a > 0 && t3[col_a] != ' '; col_a--);
170 print_macro (f, n, &t3);
173 n += col - getmaxx(main_w);
174 if (option (OPTMARKERS))
176 col = pad (f, n, col_b);
184 static void dump_menu (FILE * f, int menu)
186 struct keymap_t *map;
190 /* browse through the keymap table */
191 for (map = Keymaps[menu]; map; map = map->next) {
192 if (map->op != OP_NULL) {
193 km_expand_key (buf, sizeof (buf), map);
195 if (map->op == OP_MACRO) {
196 if (map->descr == NULL)
197 help_format_line (f, -1, buf, "macro", map->macro);
199 help_format_line (f, 1, buf, map->macro, map->descr);
202 b = help_lookupFunction (map->op, menu);
203 help_format_line (f, 0, buf, b ? b->name : "UNKNOWN",
204 b ? _(HelpStrings[b->op]) :
205 _("ERROR: please report this bug"));
211 static int is_bound (struct keymap_t *map, int op)
213 for (; map; map = map->next)
219 static void dump_unbound (FILE * f,
220 struct binding_t *funcs,
221 struct keymap_t *map, struct keymap_t *aux)
225 for (i = 0; funcs[i].name; i++) {
226 if (!is_bound (map, funcs[i].op) &&
227 (!aux || !is_bound (aux, funcs[i].op)))
228 help_format_line (f, 0, funcs[i].name, "", _(HelpStrings[funcs[i].op]));
232 void mutt_help (int menu)
234 char tmp[_POSIX_PATH_MAX];
238 struct binding_t *funcs;
240 funcs = km_get_table (menu);
241 desc = mutt_getnamebyvalue (menu, Menus);
243 desc = _("<UNKNOWN>");
246 f = m_tempfile(tmp, sizeof(tmp), NONULL(mod_core.tmpdir), NULL);
253 if (menu != MENU_EDITOR && menu != MENU_PAGER) {
254 fputs(_("\nGeneric bindings:\n\n"), f);
255 dump_menu(f, MENU_GENERIC);
258 fputs(_("\nUnbound functions:\n\n"), f);
260 dump_unbound(f, funcs, Keymaps[menu], NULL);
262 if (menu != MENU_PAGER)
263 dump_unbound (f, OpGeneric, Keymaps[MENU_GENERIC], Keymaps[menu]);
267 snprintf(buf, sizeof (buf), _("Help for %s"), desc);
268 } while (mutt_pager(buf, tmp,
269 M_PAGER_RETWINCH | M_PAGER_MARKER | M_PAGER_NSKIP,
270 NULL) == OP_REFORMAT_WINCH);