2 * Copyright Neil Brown ©2016-2019 <neil@brown.name>
3 * May be distributed under terms of GPLv2 - see file:COPYING
7 * A history pane supports selection of lines from a separate
8 * document. The underlying document is assumed to be one line
9 * and this line can be replaced by various lines from the history document.
10 * When a line is replaced, if it had been modified, it is saved first.
11 * :M-p - replace current line with previous line from history, if there is one
12 * :M-n - replace current line with next line from history. If none, restore
14 * :M-r - incremental search - later
15 * When a selection is committed, it is added to end of history.
31 struct lookup_cmd handle;
34 static struct map *history_map;
35 DEF_LOOKUP_CMD(history_handle, history_map);
37 DEF_CMD(history_close)
39 struct history_info *hi = ci->home->data;
42 pane_close(hi->history);
48 struct history_info *hi = ci->home->data;
53 ci->home->data = safe_cast NULL;
54 /* handle was in 'hi' */
55 ci->home->handle = NULL;
59 DEF_CMD(history_notify_close)
61 struct history_info *hi = ci->home->data;
63 if (ci->focus == hi->history)
64 /* The history document is going away!!! */
71 struct history_info *hi = ci->home->data;
73 const char *line = ci->str;
76 if (!hi->history || !ci->str)
77 /* history document was destroyed */
79 /* Must never include a newline in a history entry! */
80 eol = strchr(ci->str, '\n');
82 line = strnsave(ci->home, ci->str, eol - ci->str);
84 prev = call_ret(strsave, "history:get-last", ci->focus);
85 if (prev && line && strcmp(prev, line) == 0)
88 call("Move-File", hi->history, 1);
89 call("Replace", hi->history, 1, NULL, line);
90 call("Replace", hi->history, 1, NULL, "\n", 1);
96 history_save_func(ci);
101 DEF_CMD(history_notify_replace)
103 struct history_info *hi = ci->home->data;
110 DEF_CMD(history_move)
112 struct history_info *hi = ci->home->data;
115 const char *suffix = ksuffix(ci, "K:M-");
117 if (!hi->history || !ci->mark)
119 if (*suffix == 'p') {
120 m = mark_at_point(hi->history, NULL, MARK_UNGROUPED);
121 call("Move-EOL", hi->history, -2);
123 call("Move-EOL", hi->history, 1);
124 call("Move-Char", hi->history, 1);
125 m = mark_at_point(hi->history, NULL, MARK_UNGROUPED);
126 call("Move-EOL", hi->history, 1, m);
127 call("Move-Char", hi->history, 1, m);
129 l = call_ret(str, "doc:get-str", hi->history, 0, NULL, NULL, 0, m);
131 /* No more history */
133 if (*suffix == 'p') {
144 call("Move-EOL", ci->focus, -1, ci->mark);
145 m = mark_dup(ci->mark);
146 call("Move-EOL", ci->focus, 1, m);
150 hi->saved = call_ret(str, "doc:get-str", ci->focus,
154 call("Replace", ci->focus, 1, m, l);
163 DEF_CMD(history_attach)
165 struct history_info *hi;
168 if (!ci->str || !ci->str2)
171 hi = calloc(1, sizeof(*hi));
172 hi->done_map = key_alloc();
173 hi->handle = history_handle;
174 hi->handle.m = &hi->done_map;
175 key_add_chain(hi->done_map, history_map);
176 key_add(hi->done_map, ci->str2, &history_done);
177 p = call_ret(pane, "docs:byname", ci->focus, 0, NULL, ci->str);
179 p = call_ret(pane, "doc:from-text", ci->focus, 0, NULL, ci->str,
185 hi->history = call_ret(pane, "doc:attach-view", p, -1, NULL, "invisible");
188 call("Move-File", hi->history, 1);
189 buf_init(&hi->search);
190 p = pane_register(ci->focus, 0, &hi->handle.c, hi);
191 pane_add_notify(p, hi->history, "Notify:Close");
192 call("doc:request:doc:replaced", p);
193 return comm_call(ci->comm2, "callback:attach", p);
196 DEF_CMD(history_hlast)
198 struct history_info *hi = ci->home->data;
199 struct pane *doc = hi->history;
206 m = vmark_new(doc, MARK_UNGROUPED, NULL);
209 call("doc:set-ref", doc, 0, m);
210 call("doc:set", doc, 0, m, NULL, 1);
211 mark_step_pane(doc, m, 0, 1);
213 while (doc_prior_pane(doc, m) != '\n')
214 if (mark_step_pane(doc, m, 0, 1) == WEOF)
216 rv = call_comm("doc:get-str", doc, ci->comm2, 0, m, NULL, 0, m2);
222 DEF_CMD(history_last)
224 /* Get last line from the given history document */
229 doc = call_ret(pane, "docs:byname", ci->focus, 0, NULL, ci->str);
232 m = vmark_new(doc, MARK_UNGROUPED, NULL);
235 call("doc:set-ref", doc, 0, m);
236 call("doc:set", doc, 0, m, NULL, 1);
237 mark_step_pane(doc, m, 0, 1);
239 while (doc_prior_pane(doc, m) != '\n')
240 if (mark_step_pane(doc, m, 0, 1) == WEOF)
242 rv = call_comm("doc:get-str", doc, ci->comm2, 0, m, NULL, 0, m2);
248 void edlib_init(struct pane *ed safe)
250 call_comm("global-set-command", ed, &history_attach, 0, NULL, "attach-history");
251 call_comm("global-set-command", ed, &history_last, 0, NULL, "history-get-last");
256 history_map = key_alloc();
257 key_add(history_map, "Close", &history_close);
258 key_add(history_map, "Free", &history_free);
259 key_add(history_map, "Notify:Close", &history_notify_close);
260 key_add(history_map, "doc:replaced", &history_notify_replace);
261 key_add(history_map, "K:M-p", &history_move);
262 key_add(history_map, "K:M-n", &history_move);
263 key_add(history_map, "history:save", &history_save);
264 key_add(history_map, "history:get-last", &history_hlast);