File: | src/usr.bin/vi/build/../vi/vi.c |
Warning: | line 347, column 40 The right operand of '!=' is a garbage value |
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1 | /* $OpenBSD: vi.c,v 1.23 2022/02/20 19:45:51 tb Exp $ */ | |||
2 | ||||
3 | /*- | |||
4 | * Copyright (c) 1992, 1993, 1994 | |||
5 | * The Regents of the University of California. All rights reserved. | |||
6 | * Copyright (c) 1992, 1993, 1994, 1995, 1996 | |||
7 | * Keith Bostic. All rights reserved. | |||
8 | * | |||
9 | * See the LICENSE file for redistribution information. | |||
10 | */ | |||
11 | ||||
12 | #include "config.h" | |||
13 | ||||
14 | #include <sys/types.h> | |||
15 | #include <sys/queue.h> | |||
16 | #include <sys/time.h> | |||
17 | ||||
18 | #include <bitstring.h> | |||
19 | #include <ctype.h> | |||
20 | #include <errno(*__errno()).h> | |||
21 | #include <limits.h> | |||
22 | #include <stdio.h> | |||
23 | #include <stdlib.h> | |||
24 | #include <string.h> | |||
25 | #include <unistd.h> | |||
26 | ||||
27 | #include "../common/common.h" | |||
28 | #include "vi.h" | |||
29 | ||||
30 | typedef enum { | |||
31 | GC_ERR, GC_ERR_NOFLUSH, GC_EVENT, GC_FATAL, GC_INTERRUPT, GC_OK | |||
32 | } gcret_t; | |||
33 | ||||
34 | static VIKEYS const | |||
35 | *v_alias(SCR *, VICMD *, VIKEYS const *); | |||
36 | static gcret_t v_cmd(SCR *, VICMD *, VICMD *, VICMD *, int *, int *); | |||
37 | static int v_count(SCR *, CHAR_T, u_long *); | |||
38 | static void v_dtoh(SCR *); | |||
39 | static int v_init(SCR *); | |||
40 | static gcret_t v_key(SCR *, int, EVENT *, u_int32_t); | |||
41 | static int v_keyword(SCR *); | |||
42 | static int v_motion(SCR *, VICMD *, VICMD *, int *); | |||
43 | ||||
44 | #if defined(DEBUG) && defined(COMLOG) | |||
45 | static void v_comlog(SCR *, VICMD *); | |||
46 | #endif | |||
47 | ||||
48 | /* | |||
49 | * Side-effect: | |||
50 | * The dot structure can be set by the underlying vi functions, | |||
51 | * see v_Put() and v_put(). | |||
52 | */ | |||
53 | #define DOT(&((VI_PRIVATE *)((sp)->vi_private))->sdot) (&VIP(sp)((VI_PRIVATE *)((sp)->vi_private))->sdot) | |||
54 | #define DOTMOTION(&((VI_PRIVATE *)((sp)->vi_private))->sdotmotion) (&VIP(sp)((VI_PRIVATE *)((sp)->vi_private))->sdotmotion) | |||
55 | ||||
56 | /* | |||
57 | * vi -- | |||
58 | * Main vi command loop. | |||
59 | * | |||
60 | * PUBLIC: int vi(SCR **); | |||
61 | */ | |||
62 | int | |||
63 | vi(SCR **spp) | |||
64 | { | |||
65 | GS *gp; | |||
66 | MARK abs; | |||
67 | SCR *next, *sp; | |||
68 | VICMD cmd, *vp; | |||
69 | VI_PRIVATE *vip; | |||
70 | int comcount, mapped, rval; | |||
71 | ||||
72 | /* Get the first screen. */ | |||
73 | sp = *spp; | |||
74 | gp = sp->gp; | |||
75 | ||||
76 | /* Initialize the command structure. */ | |||
77 | vp = &cmd; | |||
78 | memset(vp, 0, sizeof(VICMD)); | |||
79 | ||||
80 | /* Reset strange attraction. */ | |||
81 | F_SET(vp, VM_RCM_SET)(((vp)->flags) |= ((0x00000020))); | |||
82 | ||||
83 | /* Initialize the vi screen. */ | |||
84 | if (v_init(sp)) | |||
| ||||
85 | return (1); | |||
86 | ||||
87 | /* Set the focus. */ | |||
88 | (void)sp->gp->scr_rename(sp, sp->frp->name, 1); | |||
89 | ||||
90 | for (vip = VIP(sp)((VI_PRIVATE *)((sp)->vi_private)), rval = 0;;) { | |||
91 | /* Resolve messages. */ | |||
92 | if (!MAPPED_KEYS_WAITING(sp)(((sp)->gp->i_cnt != 0) && (((&(sp)->gp-> i_event[(sp)->gp->i_next]._u_event._e_ch)->flags) & ((0x02)))) && vs_resolve(sp, NULL((void *)0), 0)) | |||
93 | goto ret; | |||
94 | ||||
95 | /* | |||
96 | * If not skipping a refresh, return to command mode and | |||
97 | * refresh the screen. | |||
98 | */ | |||
99 | if (F_ISSET(vip, VIP_S_REFRESH)(((vip)->flags) & ((0x0100)))) | |||
100 | F_CLR(vip, VIP_S_REFRESH)(((vip)->flags) &= ~((0x0100))); | |||
101 | else { | |||
102 | sp->showmode = SM_COMMAND; | |||
103 | if (vs_refresh(sp, 0)) | |||
104 | goto ret; | |||
105 | } | |||
106 | ||||
107 | /* Set the new favorite position. */ | |||
108 | if (F_ISSET(vp, VM_RCM_SET | VM_RCM_SETFNB | VM_RCM_SETNNB)(((vp)->flags) & ((0x00000020 | 0x00000040 | 0x00000100 )))) { | |||
109 | F_CLR(vip, VIP_RCM_LAST)(((vip)->flags) &= ~((0x0040))); | |||
110 | (void)vs_column(sp, &sp->rcm); | |||
111 | } | |||
112 | ||||
113 | /* | |||
114 | * If not currently in a map, log the cursor position, | |||
115 | * and set a flag so that this command can become the | |||
116 | * DOT command. | |||
117 | */ | |||
118 | if (MAPPED_KEYS_WAITING(sp)(((sp)->gp->i_cnt != 0) && (((&(sp)->gp-> i_event[(sp)->gp->i_next]._u_event._e_ch)->flags) & ((0x02))))) | |||
119 | mapped = 1; | |||
120 | else { | |||
121 | if (log_cursor(sp)) | |||
122 | goto err; | |||
123 | mapped = 0; | |||
124 | } | |||
125 | ||||
126 | /* | |||
127 | * There may be an ex command waiting, and we returned here | |||
128 | * only because we exited a screen or file. In this case, | |||
129 | * we simply go back into the ex parser. | |||
130 | */ | |||
131 | if (EXCMD_RUNNING(gp)(((&(gp)->ecq)->lh_first)->clen != 0)) { | |||
132 | vp->kp = &vikeys[':']; | |||
133 | goto ex_continue; | |||
134 | } | |||
135 | ||||
136 | /* Refresh the command structure. */ | |||
137 | memset(vp, 0, sizeof(VICMD)); | |||
138 | ||||
139 | /* | |||
140 | * We get a command, which may or may not have an associated | |||
141 | * motion. If it does, we get it too, calling its underlying | |||
142 | * function to get the resulting mark. We then call the | |||
143 | * command setting the cursor to the resulting mark. | |||
144 | * | |||
145 | * !!! | |||
146 | * Vi historically flushed mapped characters on error, but | |||
147 | * entering extra <escape> characters at the beginning of | |||
148 | * a map wasn't considered an error -- in fact, users would | |||
149 | * put leading <escape> characters in maps to clean up vi | |||
150 | * state before the map was interpreted. Beauty! | |||
151 | */ | |||
152 | switch (v_cmd(sp, DOT(&((VI_PRIVATE *)((sp)->vi_private))->sdot), vp, NULL((void *)0), &comcount, &mapped)) { | |||
153 | case GC_ERR: | |||
154 | goto err; | |||
155 | case GC_ERR_NOFLUSH: | |||
156 | goto gc_err_noflush; | |||
157 | case GC_EVENT: | |||
158 | if (v_event_exec(sp, vp)) | |||
159 | goto err; | |||
160 | goto gc_event; | |||
161 | case GC_FATAL: | |||
162 | goto ret; | |||
163 | case GC_INTERRUPT: | |||
164 | goto intr; | |||
165 | case GC_OK: | |||
166 | break; | |||
167 | } | |||
168 | ||||
169 | /* Check for security setting. */ | |||
170 | if (F_ISSET(vp->kp, V_SECURE)(((vp->kp)->flags) & ((0x02000000))) && O_ISSET(sp, O_SECURE)((((&(((sp)))->opts[(((O_SECURE)))])->flags) & ( (0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_SECURE )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_SECURE)))] .o_cur.val)) { | |||
171 | ex_emsg(sp, KEY_NAME(sp, vp->key)((unsigned char)(vp->key) <= 254 ? (sp)->gp->cname [(unsigned char)(vp->key)].name : v_key_name((sp), (vp-> key))), EXM_SECURE); | |||
172 | goto err; | |||
173 | } | |||
174 | ||||
175 | /* | |||
176 | * Historical practice: if a dot command gets a new count, | |||
177 | * any motion component goes away, i.e. "d3w2." deletes a | |||
178 | * total of 5 words. | |||
179 | */ | |||
180 | if (F_ISSET(vp, VC_ISDOT)(((vp)->flags) & ((0x00002000))) && comcount) | |||
181 | DOTMOTION(&((VI_PRIVATE *)((sp)->vi_private))->sdotmotion)->count = 1; | |||
182 | ||||
183 | /* Copy the key flags into the local structure. */ | |||
184 | F_SET(vp, vp->kp->flags)(((vp)->flags) |= ((vp->kp->flags))); | |||
185 | ||||
186 | /* Prepare to set the previous context. */ | |||
187 | if (F_ISSET(vp, V_ABS | V_ABS_C | V_ABS_L)(((vp)->flags) & ((0x00004000 | 0x00008000 | 0x00010000 )))) { | |||
188 | abs.lno = sp->lno; | |||
189 | abs.cno = sp->cno; | |||
190 | } | |||
191 | ||||
192 | /* | |||
193 | * Set the three cursor locations to the current cursor. The | |||
194 | * underlying routines don't bother if the cursor doesn't move. | |||
195 | * This also handles line commands (e.g. Y) defaulting to the | |||
196 | * current line. | |||
197 | */ | |||
198 | vp->m_start.lno = vp->m_stop.lno = vp->m_final.lno = sp->lno; | |||
199 | vp->m_start.cno = vp->m_stop.cno = vp->m_final.cno = sp->cno; | |||
200 | ||||
201 | /* | |||
202 | * Do any required motion; v_motion sets the from MARK and the | |||
203 | * line mode flag, as well as the VM_RCM flags. | |||
204 | */ | |||
205 | if (F_ISSET(vp, V_MOTION)(((vp)->flags) & ((0x00200000))) && | |||
206 | v_motion(sp, DOTMOTION(&((VI_PRIVATE *)((sp)->vi_private))->sdotmotion), vp, &mapped)) { | |||
207 | if (INTERRUPTED(sp)(((((sp)->gp)->flags) & ((0x0004))) || (!v_event_get ((sp), ((void *)0), 0, 0x001) && ((((sp)->gp)-> flags) & ((0x0004)))))) | |||
208 | goto intr; | |||
209 | goto err; | |||
210 | } | |||
211 | ||||
212 | /* | |||
213 | * If a count is set and the command is line oriented, set the | |||
214 | * to MARK here relative to the cursor/from MARK. This is for | |||
215 | * commands that take both counts and motions, i.e. "4yy" and | |||
216 | * "y%". As there's no way the command can know which the user | |||
217 | * did, we have to do it here. (There are commands that are | |||
218 | * line oriented and that take counts ("#G", "#H"), for which | |||
219 | * this calculation is either completely meaningless or wrong. | |||
220 | * Each command must validate the value for itself. | |||
221 | */ | |||
222 | if (F_ISSET(vp, VC_C1SET)(((vp)->flags) & ((0x00000800))) && F_ISSET(vp, VM_LMODE)(((vp)->flags) & ((0x00000008)))) | |||
223 | vp->m_stop.lno += vp->count - 1; | |||
224 | ||||
225 | /* Increment the command count. */ | |||
226 | ++sp->ccnt; | |||
227 | ||||
228 | #if defined(DEBUG) && defined(COMLOG) | |||
229 | v_comlog(sp, vp); | |||
230 | #endif | |||
231 | /* Call the function. */ | |||
232 | ex_continue: if (vp->kp->func(sp, vp)) | |||
233 | goto err; | |||
234 | gc_event: | |||
235 | #ifdef DEBUG | |||
236 | /* Make sure no function left the temporary space locked. */ | |||
237 | if (F_ISSET(gp, G_TMP_INUSE)(((gp)->flags) & ((0x0100)))) { | |||
238 | F_CLR(gp, G_TMP_INUSE)(((gp)->flags) &= ~((0x0100))); | |||
239 | msgq(sp, M_ERR, | |||
240 | "vi: temporary buffer not released"); | |||
241 | } | |||
242 | #endif | |||
243 | /* | |||
244 | * If we're exiting this screen, move to the next one, or, if | |||
245 | * there aren't any more, return to the main editor loop. The | |||
246 | * ordering is careful, don't discard the contents of sp until | |||
247 | * the end. | |||
248 | */ | |||
249 | if (F_ISSET(sp, SC_EXIT | SC_EXIT_FORCE)(((sp)->flags) & ((0x00000200 | 0x00000400)))) { | |||
250 | if (file_end(sp, NULL((void *)0), F_ISSET(sp, SC_EXIT_FORCE)(((sp)->flags) & ((0x00000400))))) | |||
251 | goto ret; | |||
252 | if (vs_discard(sp, &next)) | |||
253 | goto ret; | |||
254 | if (next == NULL((void *)0) && vs_swap(sp, &next, NULL((void *)0))) | |||
255 | goto ret; | |||
256 | *spp = next; | |||
257 | if (screen_end(sp)) | |||
258 | goto ret; | |||
259 | if (next == NULL((void *)0)) | |||
260 | break; | |||
261 | ||||
262 | /* Switch screens, change focus. */ | |||
263 | sp = next; | |||
264 | vip = VIP(sp)((VI_PRIVATE *)((sp)->vi_private)); | |||
265 | (void)sp->gp->scr_rename(sp, sp->frp->name, 1); | |||
266 | ||||
267 | /* Don't trust the cursor. */ | |||
268 | F_SET(vip, VIP_CUR_INVALID)(((vip)->flags) |= ((0x0001))); | |||
269 | ||||
270 | continue; | |||
271 | } | |||
272 | ||||
273 | /* | |||
274 | * Set the dot command structure. | |||
275 | * | |||
276 | * !!! | |||
277 | * Historically, commands which used mapped keys did not | |||
278 | * set the dot command, with the exception of the text | |||
279 | * input commands. | |||
280 | */ | |||
281 | if (F_ISSET(vp, V_DOT)(((vp)->flags) & ((0x00080000))) && !mapped) { | |||
282 | *DOT(&((VI_PRIVATE *)((sp)->vi_private))->sdot) = cmd; | |||
283 | F_SET(DOT, VC_ISDOT)((((&((VI_PRIVATE *)((sp)->vi_private))->sdot))-> flags) |= ((0x00002000))); | |||
284 | ||||
285 | /* | |||
286 | * If a count was supplied for both the command and | |||
287 | * its motion, the count was used only for the motion. | |||
288 | * Turn the count back on for the dot structure. | |||
289 | */ | |||
290 | if (F_ISSET(vp, VC_C1RESET)(((vp)->flags) & ((0x00000400)))) | |||
291 | F_SET(DOT, VC_C1SET)((((&((VI_PRIVATE *)((sp)->vi_private))->sdot))-> flags) |= ((0x00000800))); | |||
292 | ||||
293 | /* VM flags aren't retained. */ | |||
294 | F_CLR(DOT, VM_COMMASK | VM_RCM_MASK)((((&((VI_PRIVATE *)((sp)->vi_private))->sdot))-> flags) &= ~((0x0000000f | 0x000001f0))); | |||
295 | } | |||
296 | ||||
297 | /* | |||
298 | * Some vi row movements are "attracted" to the last position | |||
299 | * set, i.e. the VM_RCM commands are moths to the VM_RCM_SET | |||
300 | * commands' candle. If the movement is to the EOL the vi | |||
301 | * command handles it. If it's to the beginning, we handle it | |||
302 | * here. | |||
303 | * | |||
304 | * Note, some commands (e.g. _, ^) don't set the VM_RCM_SETFNB | |||
305 | * flag, but do the work themselves. The reason is that they | |||
306 | * have to modify the column in case they're being used as a | |||
307 | * motion component. Other similar commands (e.g. +, -) don't | |||
308 | * have to modify the column because they are always line mode | |||
309 | * operations when used as motions, so the column number isn't | |||
310 | * of any interest. | |||
311 | * | |||
312 | * Does this totally violate the screen and editor layering? | |||
313 | * You betcha. As they say, if you think you understand it, | |||
314 | * you don't. | |||
315 | */ | |||
316 | switch (F_ISSET(vp, VM_RCM_MASK)(((vp)->flags) & ((0x000001f0)))) { | |||
317 | case 0: | |||
318 | case VM_RCM_SET0x00000020: | |||
319 | break; | |||
320 | case VM_RCM0x00000010: | |||
321 | vp->m_final.cno = vs_rcm(sp, | |||
322 | vp->m_final.lno, F_ISSET(vip, VIP_RCM_LAST)(((vip)->flags) & ((0x0040)))); | |||
323 | break; | |||
324 | case VM_RCM_SETLAST0x00000080: | |||
325 | F_SET(vip, VIP_RCM_LAST)(((vip)->flags) |= ((0x0040))); | |||
326 | break; | |||
327 | case VM_RCM_SETFNB0x00000040: | |||
328 | vp->m_final.cno = 0; | |||
329 | /* FALLTHROUGH */ | |||
330 | case VM_RCM_SETNNB0x00000100: | |||
331 | if (nonblank(sp, vp->m_final.lno, &vp->m_final.cno)) | |||
332 | goto err; | |||
333 | break; | |||
334 | default: | |||
335 | abort(); | |||
336 | } | |||
337 | ||||
338 | /* Update the cursor. */ | |||
339 | sp->lno = vp->m_final.lno; | |||
340 | sp->cno = vp->m_final.cno; | |||
341 | ||||
342 | /* | |||
343 | * Set the absolute mark -- set even if a tags or similar | |||
344 | * command, since the tag may be moving to the same file. | |||
345 | */ | |||
346 | if ((F_ISSET(vp, V_ABS)(((vp)->flags) & ((0x00004000))) || | |||
347 | (F_ISSET(vp, V_ABS_L)(((vp)->flags) & ((0x00010000))) && sp->lno != abs.lno) || | |||
| ||||
348 | (F_ISSET(vp, V_ABS_C)(((vp)->flags) & ((0x00008000))) && | |||
349 | (sp->lno != abs.lno || sp->cno != abs.cno))) && | |||
350 | mark_set(sp, ABSMARK1'\'', &abs, 1)) | |||
351 | goto err; | |||
352 | ||||
353 | if (0) { | |||
354 | err: if (v_event_flush(sp, CH_MAPPED0x02)) | |||
355 | msgq(sp, M_BERR, | |||
356 | "Vi command failed: mapped keys discarded"); | |||
357 | } | |||
358 | ||||
359 | /* | |||
360 | * Check and clear interrupts. There's an obvious race, but | |||
361 | * it's not worth fixing. | |||
362 | */ | |||
363 | gc_err_noflush: if (INTERRUPTED(sp)(((((sp)->gp)->flags) & ((0x0004))) || (!v_event_get ((sp), ((void *)0), 0, 0x001) && ((((sp)->gp)-> flags) & ((0x0004)))))) { | |||
364 | intr: CLR_INTERRUPT(sp)((((sp)->gp)->flags) &= ~((0x0004))); | |||
365 | if (v_event_flush(sp, CH_MAPPED0x02)) | |||
366 | msgq(sp, M_ERR, | |||
367 | "Interrupted: mapped keys discarded"); | |||
368 | else | |||
369 | msgq(sp, M_ERR, "Interrupted"); | |||
370 | } | |||
371 | ||||
372 | /* If the last command switched screens, update. */ | |||
373 | if (F_ISSET(sp, SC_SSWITCH)(((sp)->flags) & ((0x00001000)))) { | |||
374 | F_CLR(sp, SC_SSWITCH)(((sp)->flags) &= ~((0x00001000))); | |||
375 | ||||
376 | /* | |||
377 | * If the current screen is still displayed, it will | |||
378 | * need a new status line. | |||
379 | */ | |||
380 | F_SET(sp, SC_STATUS)(((sp)->flags) |= ((0x02000000))); | |||
381 | ||||
382 | /* Switch screens, change focus. */ | |||
383 | sp = sp->nextdisp; | |||
384 | vip = VIP(sp)((VI_PRIVATE *)((sp)->vi_private)); | |||
385 | (void)sp->gp->scr_rename(sp, sp->frp->name, 1); | |||
386 | ||||
387 | /* Don't trust the cursor. */ | |||
388 | F_SET(vip, VIP_CUR_INVALID)(((vip)->flags) |= ((0x0001))); | |||
389 | ||||
390 | /* Refresh so we can display messages. */ | |||
391 | if (vs_refresh(sp, 1)) | |||
392 | return (1); | |||
393 | } | |||
394 | ||||
395 | /* If the last command switched files, change focus. */ | |||
396 | if (F_ISSET(sp, SC_FSWITCH)(((sp)->flags) & ((0x00000800)))) { | |||
397 | F_CLR(sp, SC_FSWITCH)(((sp)->flags) &= ~((0x00000800))); | |||
398 | F_CLR(sp, SC_SCR_TOP)(((sp)->flags) &= ~((0x00000100))); | |||
399 | F_SET(sp, SC_SCR_CENTER)(((sp)->flags) |= ((0x00000080))); | |||
400 | (void)sp->gp->scr_rename(sp, sp->frp->name, 1); | |||
401 | } | |||
402 | ||||
403 | /* Sync recovery if changes were made. */ | |||
404 | if (F_ISSET(sp->ep, F_RCV_SYNC)(((sp->ep)->flags) & ((0x100)))) | |||
405 | rcv_sync(sp, 0); | |||
406 | ||||
407 | /* If leaving vi, return to the main editor loop. */ | |||
408 | if (F_ISSET(gp, G_SRESTART)(((gp)->flags) & ((0x0080))) || F_ISSET(sp, SC_EX)(((sp)->flags) & ((0x00000001)))) { | |||
409 | *spp = sp; | |||
410 | v_dtoh(sp); | |||
411 | break; | |||
412 | } | |||
413 | } | |||
414 | if (0) | |||
415 | ret: rval = 1; | |||
416 | return (rval); | |||
417 | } | |||
418 | ||||
419 | #define KEY(key, ec_flags){ if ((gcret = v_key(sp, 0, &ev, (ec_flags))) != GC_OK) return (gcret); if (ev._u_event._e_ch.value == K_ESCAPE) goto esc; if ((((&ev._u_event._e_ch)->flags) & ((0x02)))) *mappedp = 1; (key) = ev._u_event._e_ch.c; } { \ | |||
420 | if ((gcret = v_key(sp, 0, &ev, (ec_flags))) != GC_OK) \ | |||
421 | return (gcret); \ | |||
422 | if (ev.e_value_u_event._e_ch.value == K_ESCAPE) \ | |||
423 | goto esc; \ | |||
424 | if (F_ISSET(&ev.e_ch, CH_MAPPED)(((&ev._u_event._e_ch)->flags) & ((0x02)))) \ | |||
425 | *mappedp = 1; \ | |||
426 | (key) = ev.e_c_u_event._e_ch.c; \ | |||
427 | } | |||
428 | ||||
429 | /* | |||
430 | * The O_TILDEOP option makes the ~ command take a motion instead | |||
431 | * of a straight count. This is the replacement structure we use | |||
432 | * instead of the one currently in the VIKEYS table. | |||
433 | * | |||
434 | * XXX | |||
435 | * This should probably be deleted -- it's not all that useful, and | |||
436 | * we get help messages wrong. | |||
437 | */ | |||
438 | VIKEYS const tmotion = { | |||
439 | v_mulcase, V_CNT0x00040000|V_DOT0x00080000|V_MOTION0x00200000|VM_RCM_SET0x00000020, | |||
440 | "[count]~[count]motion", | |||
441 | " ~ change case to motion" | |||
442 | }; | |||
443 | ||||
444 | /* | |||
445 | * v_cmd -- | |||
446 | * | |||
447 | * The command structure for vi is less complex than ex (and don't think | |||
448 | * I'm not grateful!) The command syntax is: | |||
449 | * | |||
450 | * [count] [buffer] [count] key [[motion] | [buffer] [character]] | |||
451 | * | |||
452 | * and there are several special cases. The motion value is itself a vi | |||
453 | * command, with the syntax: | |||
454 | * | |||
455 | * [count] key [character] | |||
456 | */ | |||
457 | static gcret_t | |||
458 | v_cmd(SCR *sp, VICMD *dp, VICMD *vp, VICMD *ismotion, int *comcountp, | |||
459 | int *mappedp) | |||
460 | { | |||
461 | enum { COMMANDMODE, ISPARTIAL, NOTPARTIAL } cpart; | |||
462 | EVENT ev; | |||
463 | VIKEYS const *kp; | |||
464 | gcret_t gcret; | |||
465 | u_int flags; | |||
466 | CHAR_T key; | |||
467 | char *s; | |||
468 | ||||
469 | /* | |||
470 | * Get a key. | |||
471 | * | |||
472 | * <escape> cancels partial commands, i.e. a command where at least | |||
473 | * one non-numeric character has been entered. Otherwise, it beeps | |||
474 | * the terminal. | |||
475 | * | |||
476 | * !!! | |||
477 | * POSIX 1003.2-1992 explicitly disallows cancelling commands where | |||
478 | * all that's been entered is a number, requiring that the terminal | |||
479 | * be alerted. | |||
480 | */ | |||
481 | cpart = ismotion == NULL((void *)0) ? COMMANDMODE : ISPARTIAL; | |||
482 | if ((gcret = | |||
483 | v_key(sp, ismotion == NULL((void *)0), &ev, EC_MAPCOMMAND0x002)) != GC_OK) { | |||
484 | if (gcret == GC_EVENT) | |||
485 | vp->ev = ev; | |||
486 | return (gcret); | |||
487 | } | |||
488 | if (ev.e_value_u_event._e_ch.value == K_ESCAPE) | |||
489 | goto esc; | |||
490 | if (F_ISSET(&ev.e_ch, CH_MAPPED)(((&ev._u_event._e_ch)->flags) & ((0x02)))) | |||
491 | *mappedp = 1; | |||
492 | key = ev.e_c_u_event._e_ch.c; | |||
493 | ||||
494 | if (ismotion == NULL((void *)0)) | |||
495 | cpart = NOTPARTIAL; | |||
496 | ||||
497 | /* Pick up optional buffer. */ | |||
498 | if (key == '"') { | |||
499 | cpart = ISPARTIAL; | |||
500 | if (ismotion != NULL((void *)0)) { | |||
501 | v_emsg(sp, NULL((void *)0), VIM_COMBUF); | |||
502 | return (GC_ERR); | |||
503 | } | |||
504 | KEY(vp->buffer, 0){ if ((gcret = v_key(sp, 0, &ev, (0))) != GC_OK) return ( gcret); if (ev._u_event._e_ch.value == K_ESCAPE) goto esc; if ((((&ev._u_event._e_ch)->flags) & ((0x02)))) *mappedp = 1; (vp->buffer) = ev._u_event._e_ch.c; }; | |||
505 | F_SET(vp, VC_BUFFER)(((vp)->flags) |= ((0x00000200))); | |||
506 | ||||
507 | KEY(key, EC_MAPCOMMAND){ if ((gcret = v_key(sp, 0, &ev, (0x002))) != GC_OK) return (gcret); if (ev._u_event._e_ch.value == K_ESCAPE) goto esc; if ((((&ev._u_event._e_ch)->flags) & ((0x02)))) *mappedp = 1; (key) = ev._u_event._e_ch.c; }; | |||
508 | } | |||
509 | ||||
510 | /* | |||
511 | * Pick up optional count, where a leading 0 is not a count, | |||
512 | * it's a command. | |||
513 | */ | |||
514 | if (isdigit(key) && key != '0') { | |||
515 | if (v_count(sp, key, &vp->count)) | |||
516 | return (GC_ERR); | |||
517 | F_SET(vp, VC_C1SET)(((vp)->flags) |= ((0x00000800))); | |||
518 | *comcountp = 1; | |||
519 | ||||
520 | KEY(key, EC_MAPCOMMAND){ if ((gcret = v_key(sp, 0, &ev, (0x002))) != GC_OK) return (gcret); if (ev._u_event._e_ch.value == K_ESCAPE) goto esc; if ((((&ev._u_event._e_ch)->flags) & ((0x02)))) *mappedp = 1; (key) = ev._u_event._e_ch.c; }; | |||
521 | } else | |||
522 | *comcountp = 0; | |||
523 | ||||
524 | /* Pick up optional buffer. */ | |||
525 | if (key == '"') { | |||
526 | cpart = ISPARTIAL; | |||
527 | if (F_ISSET(vp, VC_BUFFER)(((vp)->flags) & ((0x00000200)))) { | |||
528 | msgq(sp, M_ERR, "Only one buffer may be specified"); | |||
529 | return (GC_ERR); | |||
530 | } | |||
531 | if (ismotion != NULL((void *)0)) { | |||
532 | v_emsg(sp, NULL((void *)0), VIM_COMBUF); | |||
533 | return (GC_ERR); | |||
534 | } | |||
535 | KEY(vp->buffer, 0){ if ((gcret = v_key(sp, 0, &ev, (0))) != GC_OK) return ( gcret); if (ev._u_event._e_ch.value == K_ESCAPE) goto esc; if ((((&ev._u_event._e_ch)->flags) & ((0x02)))) *mappedp = 1; (vp->buffer) = ev._u_event._e_ch.c; }; | |||
536 | F_SET(vp, VC_BUFFER)(((vp)->flags) |= ((0x00000200))); | |||
537 | ||||
538 | KEY(key, EC_MAPCOMMAND){ if ((gcret = v_key(sp, 0, &ev, (0x002))) != GC_OK) return (gcret); if (ev._u_event._e_ch.value == K_ESCAPE) goto esc; if ((((&ev._u_event._e_ch)->flags) & ((0x02)))) *mappedp = 1; (key) = ev._u_event._e_ch.c; }; | |||
539 | } | |||
540 | ||||
541 | /* Check for an OOB command key. */ | |||
542 | cpart = ISPARTIAL; | |||
543 | if (key > MAXVIKEY126) { | |||
544 | v_emsg(sp, KEY_NAME(sp, key)((unsigned char)(key) <= 254 ? (sp)->gp->cname[(unsigned char)(key)].name : v_key_name((sp), (key))), VIM_NOCOM); | |||
545 | return (GC_ERR); | |||
546 | } | |||
547 | kp = &vikeys[vp->key = key]; | |||
548 | ||||
549 | /* | |||
550 | * !!! | |||
551 | * Historically, D accepted and then ignored a count. Match it. | |||
552 | */ | |||
553 | if (vp->key == 'D' && F_ISSET(vp, VC_C1SET)(((vp)->flags) & ((0x00000800)))) { | |||
554 | *comcountp = 0; | |||
555 | vp->count = 0; | |||
556 | F_CLR(vp, VC_C1SET)(((vp)->flags) &= ~((0x00000800))); | |||
557 | } | |||
558 | ||||
559 | /* Check for command aliases. */ | |||
560 | if (kp->func == NULL((void *)0) && (kp = v_alias(sp, vp, kp)) == NULL((void *)0)) | |||
561 | return (GC_ERR); | |||
562 | ||||
563 | /* The tildeop option makes the ~ command take a motion. */ | |||
564 | if (key == '~' && O_ISSET(sp, O_TILDEOP)((((&(((sp)))->opts[(((O_TILDEOP)))])->flags) & ((0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_TILDEOP )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_TILDEOP))) ].o_cur.val)) | |||
565 | kp = &tmotion; | |||
566 | ||||
567 | vp->kp = kp; | |||
568 | ||||
569 | /* | |||
570 | * Find the command. The only legal command with no underlying | |||
571 | * function is dot. It's historic practice that <escape> doesn't | |||
572 | * just erase the preceding number, it beeps the terminal as well. | |||
573 | * It's a common problem, so just beep the terminal unless verbose | |||
574 | * was set. | |||
575 | */ | |||
576 | if (kp->func == NULL((void *)0)) { | |||
577 | if (key != '.') { | |||
578 | v_emsg(sp, KEY_NAME(sp, key)((unsigned char)(key) <= 254 ? (sp)->gp->cname[(unsigned char)(key)].name : v_key_name((sp), (key))), | |||
579 | ev.e_value_u_event._e_ch.value == K_ESCAPE ? VIM_NOCOM_B : VIM_NOCOM); | |||
580 | return (GC_ERR); | |||
581 | } | |||
582 | ||||
583 | /* If called for a motion command, stop now. */ | |||
584 | if (dp == NULL((void *)0)) | |||
585 | goto usage; | |||
586 | ||||
587 | /* | |||
588 | * !!! | |||
589 | * If a '.' is immediately entered after an undo command, we | |||
590 | * replay the log instead of redoing the last command. This | |||
591 | * is necessary because 'u' can't set the dot command -- see | |||
592 | * vi/v_undo.c:v_undo for details. | |||
593 | */ | |||
594 | if (VIP(sp)((VI_PRIVATE *)((sp)->vi_private))->u_ccnt == sp->ccnt) { | |||
595 | vp->kp = &vikeys['u']; | |||
596 | F_SET(vp, VC_ISDOT)(((vp)->flags) |= ((0x00002000))); | |||
597 | return (GC_OK); | |||
598 | } | |||
599 | ||||
600 | /* Otherwise, a repeatable command must have been executed. */ | |||
601 | if (!F_ISSET(dp, VC_ISDOT)(((dp)->flags) & ((0x00002000)))) { | |||
602 | msgq(sp, M_ERR, "No command to repeat"); | |||
603 | return (GC_ERR); | |||
604 | } | |||
605 | ||||
606 | /* Set new count/buffer, if any, and return. */ | |||
607 | if (F_ISSET(vp, VC_C1SET)(((vp)->flags) & ((0x00000800)))) { | |||
608 | F_SET(dp, VC_C1SET)(((dp)->flags) |= ((0x00000800))); | |||
609 | dp->count = vp->count; | |||
610 | } | |||
611 | if (F_ISSET(vp, VC_BUFFER)(((vp)->flags) & ((0x00000200)))) | |||
612 | dp->buffer = vp->buffer; | |||
613 | ||||
614 | *vp = *dp; | |||
615 | return (GC_OK); | |||
616 | } | |||
617 | ||||
618 | /* Set the flags based on the command flags. */ | |||
619 | flags = kp->flags; | |||
620 | ||||
621 | /* Check for illegal count. */ | |||
622 | if (F_ISSET(vp, VC_C1SET)(((vp)->flags) & ((0x00000800))) && !LF_ISSET(V_CNT)((flags) & ((0x00040000)))) | |||
623 | goto usage; | |||
624 | ||||
625 | /* Illegal motion command. */ | |||
626 | if (ismotion == NULL((void *)0)) { | |||
627 | /* Illegal buffer. */ | |||
628 | if (!LF_ISSET(V_OBUF)((flags) & ((0x00800000))) && F_ISSET(vp, VC_BUFFER)(((vp)->flags) & ((0x00000200)))) | |||
629 | goto usage; | |||
630 | ||||
631 | /* Required buffer. */ | |||
632 | if (LF_ISSET(V_RBUF)((flags) & ((0x01000000)))) { | |||
633 | KEY(vp->buffer, 0){ if ((gcret = v_key(sp, 0, &ev, (0))) != GC_OK) return ( gcret); if (ev._u_event._e_ch.value == K_ESCAPE) goto esc; if ((((&ev._u_event._e_ch)->flags) & ((0x02)))) *mappedp = 1; (vp->buffer) = ev._u_event._e_ch.c; }; | |||
634 | F_SET(vp, VC_BUFFER)(((vp)->flags) |= ((0x00000200))); | |||
635 | } | |||
636 | } | |||
637 | ||||
638 | /* | |||
639 | * Special case: '[', ']' and 'Z' commands. Doesn't the fact that | |||
640 | * the *single* characters don't mean anything but the *doubled* | |||
641 | * characters do, just frost your shorts? | |||
642 | */ | |||
643 | if (vp->key == '[' || vp->key == ']' || vp->key == 'Z') { | |||
644 | /* | |||
645 | * Historically, half entered [[, ]] or Z commands weren't | |||
646 | * cancelled by <escape>, the terminal was beeped instead. | |||
647 | * POSIX.2-1992 probably didn't notice, and requires that | |||
648 | * they be cancelled instead of beeping. Seems fine to me. | |||
649 | * | |||
650 | * Don't set the EC_MAPCOMMAND flag, apparently ] is a popular | |||
651 | * vi meta-character, and we don't want the user to wait while | |||
652 | * we time out a possible mapping. This *appears* to match | |||
653 | * historic vi practice, but with mapping characters, you Just | |||
654 | * Never Know. | |||
655 | */ | |||
656 | KEY(key, 0){ if ((gcret = v_key(sp, 0, &ev, (0))) != GC_OK) return ( gcret); if (ev._u_event._e_ch.value == K_ESCAPE) goto esc; if ((((&ev._u_event._e_ch)->flags) & ((0x02)))) *mappedp = 1; (key) = ev._u_event._e_ch.c; }; | |||
657 | ||||
658 | if (vp->key != key) { | |||
659 | usage: if (ismotion == NULL((void *)0)) | |||
660 | s = kp->usage; | |||
661 | else if (ismotion->key == '~' && O_ISSET(sp, O_TILDEOP)((((&(((sp)))->opts[(((O_TILDEOP)))])->flags) & ((0x01))) ? (((sp)))->gp->opts[(((sp)))->opts[(((O_TILDEOP )))].o_cur.val].o_cur.val : (((sp)))->opts[(((O_TILDEOP))) ].o_cur.val)) | |||
662 | s = tmotion.usage; | |||
663 | else | |||
664 | s = vikeys[ismotion->key].usage; | |||
665 | v_emsg(sp, s, VIM_USAGE); | |||
666 | return (GC_ERR); | |||
667 | } | |||
668 | } | |||
669 | /* Special case: 'z' command. */ | |||
670 | if (vp->key == 'z') { | |||
671 | KEY(vp->character, 0){ if ((gcret = v_key(sp, 0, &ev, (0))) != GC_OK) return ( gcret); if (ev._u_event._e_ch.value == K_ESCAPE) goto esc; if ((((&ev._u_event._e_ch)->flags) & ((0x02)))) *mappedp = 1; (vp->character) = ev._u_event._e_ch.c; }; | |||
672 | if (isdigit(vp->character)) { | |||
673 | if (v_count(sp, vp->character, &vp->count2)) | |||
674 | return (GC_ERR); | |||
675 | F_SET(vp, VC_C2SET)(((vp)->flags) |= ((0x00001000))); | |||
676 | KEY(vp->character, 0){ if ((gcret = v_key(sp, 0, &ev, (0))) != GC_OK) return ( gcret); if (ev._u_event._e_ch.value == K_ESCAPE) goto esc; if ((((&ev._u_event._e_ch)->flags) & ((0x02)))) *mappedp = 1; (vp->character) = ev._u_event._e_ch.c; }; | |||
677 | } | |||
678 | } | |||
679 | ||||
680 | /* | |||
681 | * Commands that have motion components can be doubled to | |||
682 | * imply the current line. | |||
683 | */ | |||
684 | if (ismotion != NULL((void *)0) && ismotion->key != key && !LF_ISSET(V_MOVE)((flags) & ((0x00400000)))) { | |||
685 | msgq(sp, M_ERR, "%s may not be used as a motion command", | |||
686 | KEY_NAME(sp, key)((unsigned char)(key) <= 254 ? (sp)->gp->cname[(unsigned char)(key)].name : v_key_name((sp), (key)))); | |||
687 | return (GC_ERR); | |||
688 | } | |||
689 | ||||
690 | /* Required character. */ | |||
691 | if (LF_ISSET(V_CHAR)((flags) & ((0x00020000)))) | |||
692 | KEY(vp->character, 0){ if ((gcret = v_key(sp, 0, &ev, (0))) != GC_OK) return ( gcret); if (ev._u_event._e_ch.value == K_ESCAPE) goto esc; if ((((&ev._u_event._e_ch)->flags) & ((0x02)))) *mappedp = 1; (vp->character) = ev._u_event._e_ch.c; }; | |||
693 | ||||
694 | /* Get any associated cursor word. */ | |||
695 | if (F_ISSET(kp, V_KEYW)(((kp)->flags) & ((0x00100000))) && v_keyword(sp)) | |||
696 | return (GC_ERR); | |||
697 | ||||
698 | return (GC_OK); | |||
699 | ||||
700 | esc: switch (cpart) { | |||
701 | case COMMANDMODE: | |||
702 | msgq(sp, M_BERR, "Already in command mode"); | |||
703 | return (GC_ERR_NOFLUSH); | |||
704 | case ISPARTIAL: | |||
705 | break; | |||
706 | case NOTPARTIAL: | |||
707 | (void)sp->gp->scr_bell(sp); | |||
708 | break; | |||
709 | } | |||
710 | return (GC_ERR); | |||
711 | } | |||
712 | ||||
713 | /* | |||
714 | * v_motion -- | |||
715 | * | |||
716 | * Get resulting motion mark. | |||
717 | */ | |||
718 | static int | |||
719 | v_motion(SCR *sp, VICMD *dm, VICMD *vp, int *mappedp) | |||
720 | { | |||
721 | VICMD motion; | |||
722 | size_t len; | |||
723 | u_long cnt; | |||
724 | u_int flags; | |||
725 | int tilde_reset, notused; | |||
726 | ||||
727 | /* | |||
728 | * If '.' command, use the dot motion, else get the motion command. | |||
729 | * Clear any line motion flags, the subsequent motion isn't always | |||
730 | * the same, i.e. "/aaa" may or may not be a line motion. | |||
731 | */ | |||
732 | if (F_ISSET(vp, VC_ISDOT)(((vp)->flags) & ((0x00002000)))) { | |||
733 | motion = *dm; | |||
734 | F_SET(&motion, VC_ISDOT)(((&motion)->flags) |= ((0x00002000))); | |||
735 | F_CLR(&motion, VM_COMMASK)(((&motion)->flags) &= ~((0x0000000f))); | |||
736 | } else { | |||
737 | memset(&motion, 0, sizeof(VICMD)); | |||
738 | if (v_cmd(sp, NULL((void *)0), &motion, vp, ¬used, mappedp) != GC_OK) | |||
739 | return (1); | |||
740 | } | |||
741 | ||||
742 | /* | |||
743 | * A count may be provided both to the command and to the motion, in | |||
744 | * which case the count is multiplicative. For example, "3y4y" is the | |||
745 | * same as "12yy". This count is provided to the motion command and | |||
746 | * not to the regular function. | |||
747 | */ | |||
748 | cnt = motion.count = F_ISSET(&motion, VC_C1SET)(((&motion)->flags) & ((0x00000800))) ? motion.count : 1; | |||
749 | if (F_ISSET(vp, VC_C1SET)(((vp)->flags) & ((0x00000800)))) { | |||
750 | motion.count *= vp->count; | |||
751 | F_SET(&motion, VC_C1SET)(((&motion)->flags) |= ((0x00000800))); | |||
752 | ||||
753 | /* | |||
754 | * Set flags to restore the original values of the command | |||
755 | * structure so dot commands can change the count values, | |||
756 | * e.g. "2dw" "3." deletes a total of five words. | |||
757 | */ | |||
758 | F_CLR(vp, VC_C1SET)(((vp)->flags) &= ~((0x00000800))); | |||
759 | F_SET(vp, VC_C1RESET)(((vp)->flags) |= ((0x00000400))); | |||
760 | } | |||
761 | ||||
762 | /* | |||
763 | * Some commands can be repeated to indicate the current line. In | |||
764 | * this case, or if the command is a "line command", set the flags | |||
765 | * appropriately. If not a doubled command, run the function to get | |||
766 | * the resulting mark. | |||
767 | */ | |||
768 | if (vp->key == motion.key) { | |||
769 | F_SET(vp, VM_LDOUBLE | VM_LMODE)(((vp)->flags) |= ((0x00000004 | 0x00000008))); | |||
770 | ||||
771 | /* Set the origin of the command. */ | |||
772 | vp->m_start.lno = sp->lno; | |||
773 | vp->m_start.cno = 0; | |||
774 | ||||
775 | /* | |||
776 | * Set the end of the command. | |||
777 | * | |||
778 | * If the current line is missing, i.e. the file is empty, | |||
779 | * historic vi permitted a "cc" or "!!" command to insert | |||
780 | * text. | |||
781 | */ | |||
782 | vp->m_stop.lno = sp->lno + motion.count - 1; | |||
783 | if (db_get(sp, vp->m_stop.lno, 0, NULL((void *)0), &len)) { | |||
784 | if (vp->m_stop.lno != 1 || | |||
785 | (vp->key != 'c' && vp->key != '!')) { | |||
786 | v_emsg(sp, NULL((void *)0), VIM_EMPTY); | |||
787 | return (1); | |||
788 | } | |||
789 | vp->m_stop.cno = 0; | |||
790 | } else | |||
791 | vp->m_stop.cno = len ? len - 1 : 0; | |||
792 | } else { | |||
793 | /* | |||
794 | * Motion commands change the underlying movement (*snarl*). | |||
795 | * For example, "l" is illegal at the end of a line, but "dl" | |||
796 | * is not. Set flags so the function knows the situation. | |||
797 | */ | |||
798 | motion.rkp = vp->kp; | |||
799 | ||||
800 | /* | |||
801 | * XXX | |||
802 | * Use yank instead of creating a new motion command, it's a | |||
803 | * lot easier for now. | |||
804 | */ | |||
805 | if (vp->kp == &tmotion) { | |||
806 | tilde_reset = 1; | |||
807 | vp->kp = &vikeys['y']; | |||
808 | } else | |||
809 | tilde_reset = 0; | |||
810 | ||||
811 | /* | |||
812 | * Copy the key flags into the local structure, except for the | |||
813 | * RCM flags -- the motion command will set the RCM flags in | |||
814 | * the vp structure if necessary. This means that the motion | |||
815 | * command is expected to determine where the cursor ends up! | |||
816 | * However, we save off the current RCM mask and restore it if | |||
817 | * it no RCM flags are set by the motion command, with a small | |||
818 | * modification. | |||
819 | * | |||
820 | * We replace the VM_RCM_SET flag with the VM_RCM flag. This | |||
821 | * is so that cursor movement doesn't set the relative position | |||
822 | * unless the motion command explicitly specified it. This | |||
823 | * appears to match historic practice, but I've never been able | |||
824 | * to develop a hard-and-fast rule. | |||
825 | */ | |||
826 | flags = F_ISSET(vp, VM_RCM_MASK)(((vp)->flags) & ((0x000001f0))); | |||
827 | if (LF_ISSET(VM_RCM_SET)((flags) & ((0x00000020)))) { | |||
828 | LF_SET(VM_RCM)((flags) |= ((0x00000010))); | |||
829 | LF_CLR(VM_RCM_SET)((flags) &= ~((0x00000020))); | |||
830 | } | |||
831 | F_CLR(vp, VM_RCM_MASK)(((vp)->flags) &= ~((0x000001f0))); | |||
832 | F_SET(&motion, motion.kp->flags & ~VM_RCM_MASK)(((&motion)->flags) |= ((motion.kp->flags & ~0x000001f0 ))); | |||
833 | ||||
834 | /* | |||
835 | * Set the three cursor locations to the current cursor. This | |||
836 | * permits commands like 'j' and 'k', that are line oriented | |||
837 | * motions and have special cursor suck semantics when they are | |||
838 | * used as standalone commands, to ignore column positioning. | |||
839 | */ | |||
840 | motion.m_final.lno = | |||
841 | motion.m_stop.lno = motion.m_start.lno = sp->lno; | |||
842 | motion.m_final.cno = | |||
843 | motion.m_stop.cno = motion.m_start.cno = sp->cno; | |||
844 | ||||
845 | /* Run the function. */ | |||
846 | if ((motion.kp->func)(sp, &motion)) | |||
847 | return (1); | |||
848 | ||||
849 | /* | |||
850 | * If the current line is missing, i.e. the file is empty, | |||
851 | * historic vi allowed "c<motion>" or "!<motion>" to insert | |||
852 | * text. Otherwise fail -- most motion commands will have | |||
853 | * already failed, but some, e.g. G, succeed in empty files. | |||
854 | */ | |||
855 | if (!db_exist(sp, vp->m_stop.lno)) { | |||
856 | if (vp->m_stop.lno != 1 || | |||
857 | (vp->key != 'c' && vp->key != '!')) { | |||
858 | v_emsg(sp, NULL((void *)0), VIM_EMPTY); | |||
859 | return (1); | |||
860 | } | |||
861 | vp->m_stop.cno = 0; | |||
862 | } | |||
863 | ||||
864 | /* | |||
865 | * XXX | |||
866 | * See above. | |||
867 | */ | |||
868 | if (tilde_reset) | |||
869 | vp->kp = &tmotion; | |||
870 | ||||
871 | /* | |||
872 | * Copy cut buffer, line mode and cursor position information | |||
873 | * from the motion command structure, i.e. anything that the | |||
874 | * motion command can set for us. The commands can flag the | |||
875 | * movement as a line motion (see v_sentence) as well as set | |||
876 | * the VM_RCM_* flags explicitly. | |||
877 | */ | |||
878 | F_SET(vp, F_ISSET(&motion, VM_COMMASK | VM_RCM_MASK))(((vp)->flags) |= (((((&motion)->flags) & ((0x0000000f | 0x000001f0)))))); | |||
879 | ||||
880 | /* | |||
881 | * If the motion command set no relative motion flags, use | |||
882 | * the (slightly) modified previous values. | |||
883 | */ | |||
884 | if (!F_ISSET(vp, VM_RCM_MASK)(((vp)->flags) & ((0x000001f0)))) | |||
885 | F_SET(vp, flags)(((vp)->flags) |= ((flags))); | |||
886 | ||||
887 | /* | |||
888 | * Commands can change behaviors based on the motion command | |||
889 | * used, for example, the ! command repeated the last bang | |||
890 | * command if N or n was used as the motion. | |||
891 | */ | |||
892 | vp->rkp = motion.kp; | |||
893 | ||||
894 | /* | |||
895 | * Motion commands can reset all of the cursor information. | |||
896 | * If the motion is in the reverse direction, switch the | |||
897 | * from and to MARK's so that it's in a forward direction. | |||
898 | * Motions are from the from MARK to the to MARK (inclusive). | |||
899 | */ | |||
900 | if (motion.m_start.lno > motion.m_stop.lno || | |||
901 | (motion.m_start.lno == motion.m_stop.lno && | |||
902 | motion.m_start.cno > motion.m_stop.cno)) { | |||
903 | vp->m_start = motion.m_stop; | |||
904 | vp->m_stop = motion.m_start; | |||
905 | } else { | |||
906 | vp->m_start = motion.m_start; | |||
907 | vp->m_stop = motion.m_stop; | |||
908 | } | |||
909 | vp->m_final = motion.m_final; | |||
910 | } | |||
911 | ||||
912 | /* | |||
913 | * If the command sets dot, save the motion structure. The motion | |||
914 | * count was changed above and needs to be reset, that's why this | |||
915 | * is done here, and not in the calling routine. | |||
916 | */ | |||
917 | if (F_ISSET(vp->kp, V_DOT)(((vp->kp)->flags) & ((0x00080000)))) { | |||
918 | *dm = motion; | |||
919 | dm->count = cnt; | |||
920 | } | |||
921 | return (0); | |||
922 | } | |||
923 | ||||
924 | /* | |||
925 | * v_init -- | |||
926 | * Initialize the vi screen. | |||
927 | */ | |||
928 | static int | |||
929 | v_init(SCR *sp) | |||
930 | { | |||
931 | GS *gp; | |||
932 | VI_PRIVATE *vip; | |||
933 | ||||
934 | gp = sp->gp; | |||
935 | vip = VIP(sp)((VI_PRIVATE *)((sp)->vi_private)); | |||
936 | ||||
937 | /* Switch into vi. */ | |||
938 | if (gp->scr_screen(sp, SC_VI0x00000002)) | |||
939 | return (1); | |||
940 | (void)gp->scr_attr(sp, SA_ALTERNATE, 1); | |||
941 | ||||
942 | F_CLR(sp, SC_EX | SC_SCR_EX)(((sp)->flags) &= ~((0x00000001 | 0x00000004))); | |||
943 | F_SET(sp, SC_VI)(((sp)->flags) |= ((0x00000002))); | |||
944 | ||||
945 | /* | |||
946 | * Initialize screen values. | |||
947 | * | |||
948 | * Small windows: see vs_refresh(), section 6a. | |||
949 | * | |||
950 | * Setup: | |||
951 | * t_minrows is the minimum rows to display | |||
952 | * t_maxrows is the maximum rows to display (rows - 1) | |||
953 | * t_rows is the rows currently being displayed | |||
954 | */ | |||
955 | sp->rows = vip->srows = O_VAL(sp, O_LINES)((((&((sp))->opts[((O_LINES))])->flags) & ((0x01 ))) ? ((sp))->gp->opts[((sp))->opts[((O_LINES))].o_cur .val].o_cur.val : ((sp))->opts[((O_LINES))].o_cur.val); | |||
956 | sp->cols = O_VAL(sp, O_COLUMNS)((((&((sp))->opts[((O_COLUMNS))])->flags) & ((0x01 ))) ? ((sp))->gp->opts[((sp))->opts[((O_COLUMNS))].o_cur .val].o_cur.val : ((sp))->opts[((O_COLUMNS))].o_cur.val); | |||
957 | sp->t_rows = sp->t_minrows = O_VAL(sp, O_WINDOW)((((&((sp))->opts[((O_WINDOW))])->flags) & ((0x01 ))) ? ((sp))->gp->opts[((sp))->opts[((O_WINDOW))].o_cur .val].o_cur.val : ((sp))->opts[((O_WINDOW))].o_cur.val); | |||
958 | if (sp->rows != 1) { | |||
959 | if (sp->t_rows > sp->rows - 1) { | |||
960 | sp->t_minrows = sp->t_rows = sp->rows - 1; | |||
961 | msgq(sp, M_INFO, | |||
962 | "Windows option value is too large, max is %u", | |||
963 | sp->t_rows); | |||
964 | } | |||
965 | sp->t_maxrows = sp->rows - 1; | |||
966 | } else | |||
967 | sp->t_maxrows = 1; | |||
968 | sp->woff = 0; | |||
969 | ||||
970 | /* Create a screen map. */ | |||
971 | CALLOC_RET(sp, HMAP, SIZE_HMAP(sp), sizeof(SMAP)){ if ((((((VI_PRIVATE *)((sp)->vi_private))->h_smap)) = calloc(((((VI_PRIVATE *)((sp)->vi_private))->srows + 1 )), (sizeof(SMAP)))) == ((void *)0)) { msgq((sp), M_SYSERR, ( (void *)0)); return (1); } }; | |||
972 | TMAP(((VI_PRIVATE *)((sp)->vi_private))->t_smap) = HMAP(((VI_PRIVATE *)((sp)->vi_private))->h_smap) + (sp->t_rows - 1); | |||
973 | HMAP(((VI_PRIVATE *)((sp)->vi_private))->h_smap)->lno = sp->lno; | |||
974 | HMAP(((VI_PRIVATE *)((sp)->vi_private))->h_smap)->coff = 0; | |||
975 | HMAP(((VI_PRIVATE *)((sp)->vi_private))->h_smap)->soff = 1; | |||
976 | ||||
977 | /* | |||
978 | * Fill the screen map from scratch -- try and center the line. That | |||
979 | * way if we're starting with a file we've seen before, we'll put the | |||
980 | * line in the middle, otherwise, it won't work and we'll end up with | |||
981 | * the line at the top. | |||
982 | */ | |||
983 | F_CLR(sp, SC_SCR_TOP)(((sp)->flags) &= ~((0x00000100))); | |||
984 | F_SET(sp, SC_SCR_REFORMAT | SC_SCR_CENTER)(((sp)->flags) |= ((0x00000020 | 0x00000080))); | |||
985 | ||||
986 | /* Invalidate the cursor. */ | |||
987 | F_SET(vip, VIP_CUR_INVALID)(((vip)->flags) |= ((0x0001))); | |||
988 | ||||
989 | /* Paint the screen image from scratch. */ | |||
990 | F_SET(vip, VIP_N_EX_PAINT)(((vip)->flags) |= ((0x0004))); | |||
991 | ||||
992 | return (0); | |||
993 | } | |||
994 | ||||
995 | /* | |||
996 | * v_dtoh -- | |||
997 | * Move all but the current screen to the hidden queue. | |||
998 | */ | |||
999 | static void | |||
1000 | v_dtoh(SCR *sp) | |||
1001 | { | |||
1002 | GS *gp; | |||
1003 | SCR *tsp; | |||
1004 | int hidden; | |||
1005 | ||||
1006 | /* Move all screens to the hidden queue, tossing screen maps. */ | |||
1007 | hidden = 0; | |||
1008 | gp = sp->gp; | |||
1009 | while ((tsp = TAILQ_FIRST(&gp->dq)((&gp->dq)->tqh_first))) { | |||
1010 | free(_HMAP(tsp)(((VI_PRIVATE *)((tsp)->vi_private))->h_smap)); | |||
1011 | _HMAP(tsp)(((VI_PRIVATE *)((tsp)->vi_private))->h_smap) = NULL((void *)0); | |||
1012 | TAILQ_REMOVE(&gp->dq, tsp, q)do { if (((tsp)->q.tqe_next) != ((void *)0)) (tsp)->q.tqe_next ->q.tqe_prev = (tsp)->q.tqe_prev; else (&gp->dq) ->tqh_last = (tsp)->q.tqe_prev; *(tsp)->q.tqe_prev = (tsp)->q.tqe_next; ; ; } while (0); | |||
1013 | TAILQ_INSERT_TAIL(&gp->hq, tsp, q)do { (tsp)->q.tqe_next = ((void *)0); (tsp)->q.tqe_prev = (&gp->hq)->tqh_last; *(&gp->hq)->tqh_last = (tsp); (&gp->hq)->tqh_last = &(tsp)->q.tqe_next ; } while (0); | |||
1014 | ++hidden; | |||
1015 | } | |||
1016 | ||||
1017 | /* Move current screen back to the display queue. */ | |||
1018 | TAILQ_REMOVE(&gp->hq, sp, q)do { if (((sp)->q.tqe_next) != ((void *)0)) (sp)->q.tqe_next ->q.tqe_prev = (sp)->q.tqe_prev; else (&gp->hq)-> tqh_last = (sp)->q.tqe_prev; *(sp)->q.tqe_prev = (sp)-> q.tqe_next; ; ; } while (0); | |||
1019 | TAILQ_INSERT_TAIL(&gp->dq, sp, q)do { (sp)->q.tqe_next = ((void *)0); (sp)->q.tqe_prev = (&gp->dq)->tqh_last; *(&gp->dq)->tqh_last = (sp); (&gp->dq)->tqh_last = &(sp)->q.tqe_next ; } while (0); | |||
1020 | ||||
1021 | /* | |||
1022 | * XXX | |||
1023 | * Don't bother internationalizing this message, it's going to | |||
1024 | * go away as soon as we have one-line screens. --TK | |||
1025 | */ | |||
1026 | if (hidden > 1) | |||
1027 | msgq(sp, M_INFO, | |||
1028 | "%d screens backgrounded; use :display to list them", | |||
1029 | hidden - 1); | |||
1030 | } | |||
1031 | ||||
1032 | /* | |||
1033 | * v_keyword -- | |||
1034 | * Get the word (or non-word) the cursor is on. | |||
1035 | */ | |||
1036 | static int | |||
1037 | v_keyword(SCR *sp) | |||
1038 | { | |||
1039 | VI_PRIVATE *vip; | |||
1040 | size_t beg, end, len; | |||
1041 | int moved, state; | |||
1042 | char *p; | |||
1043 | ||||
1044 | if (db_get(sp, sp->lno, DBG_FATAL0x001, &p, &len)) | |||
1045 | return (1); | |||
1046 | ||||
1047 | /* | |||
1048 | * !!! | |||
1049 | * Historically, tag commands skipped over any leading whitespace | |||
1050 | * characters. Make this true in general when using cursor words. | |||
1051 | * If movement, getting a cursor word implies moving the cursor to | |||
1052 | * its beginning. Refresh now. | |||
1053 | * | |||
1054 | * !!! | |||
1055 | * Find the beginning/end of the keyword. Keywords are currently | |||
1056 | * used for cursor-word searching and for tags. Historical vi | |||
1057 | * only used the word in a tag search from the cursor to the end | |||
1058 | * of the word, i.e. if the cursor was on the 'b' in " abc ", the | |||
1059 | * tag was "bc". For consistency, we make cursor word searches | |||
1060 | * follow the same rule. | |||
1061 | */ | |||
1062 | for (moved = 0, | |||
1063 | beg = sp->cno; beg < len && isspace(p[beg]); moved = 1, ++beg); | |||
1064 | if (beg >= len) { | |||
1065 | msgq(sp, M_BERR, "Cursor not in a word"); | |||
1066 | return (1); | |||
1067 | } | |||
1068 | if (moved) { | |||
1069 | sp->cno = beg; | |||
1070 | (void)vs_refresh(sp, 0); | |||
1071 | } | |||
1072 | ||||
1073 | /* Find the end of the word. */ | |||
1074 | for (state = inword(p[beg])(isalnum(p[beg]) || (p[beg]) == '_'), | |||
1075 | end = beg; ++end < len && state == inword(p[end])(isalnum(p[end]) || (p[end]) == '_');); | |||
1076 | ||||
1077 | vip = VIP(sp)((VI_PRIVATE *)((sp)->vi_private)); | |||
1078 | len = (end - beg); | |||
1079 | BINC_RET(sp, vip->keyw, vip->klen, len){ void *L__bincp; if ((len) > (vip->klen)) { if ((L__bincp = binc((sp), (vip->keyw), &(vip->klen), (len))) == ((void *)0)) return (1); (vip->keyw) = L__bincp; } }; | |||
1080 | memmove(vip->keyw, p + beg, len); | |||
1081 | vip->keyw[len] = '\0'; /* XXX */ | |||
1082 | return (0); | |||
1083 | } | |||
1084 | ||||
1085 | /* | |||
1086 | * v_alias -- | |||
1087 | * Check for a command alias. | |||
1088 | */ | |||
1089 | static VIKEYS const * | |||
1090 | v_alias(SCR *sp, VICMD *vp, VIKEYS const *kp) | |||
1091 | { | |||
1092 | CHAR_T push; | |||
1093 | ||||
1094 | switch (vp->key) { | |||
1095 | case 'C': /* C -> c$ */ | |||
1096 | push = '$'; | |||
1097 | vp->key = 'c'; | |||
1098 | break; | |||
1099 | case 'D': /* D -> d$ */ | |||
1100 | push = '$'; | |||
1101 | vp->key = 'd'; | |||
1102 | break; | |||
1103 | case 'S': /* S -> c_ */ | |||
1104 | push = '_'; | |||
1105 | vp->key = 'c'; | |||
1106 | break; | |||
1107 | case 'Y': /* Y -> y_ */ | |||
1108 | push = '_'; | |||
1109 | vp->key = 'y'; | |||
1110 | break; | |||
1111 | default: | |||
1112 | return (kp); | |||
1113 | } | |||
1114 | return (v_event_push(sp, | |||
1115 | NULL((void *)0), &push, 1, CH_NOMAP0x04 | CH_QUOTED0x08) ? NULL((void *)0) : &vikeys[vp->key]); | |||
1116 | } | |||
1117 | ||||
1118 | /* | |||
1119 | * v_count -- | |||
1120 | * Return the next count. | |||
1121 | */ | |||
1122 | static int | |||
1123 | v_count(SCR *sp, CHAR_T fkey, u_long *countp) | |||
1124 | { | |||
1125 | EVENT ev; | |||
1126 | u_long count, tc; | |||
1127 | ||||
1128 | ev.e_c_u_event._e_ch.c = fkey; | |||
1129 | count = tc = 0; | |||
1130 | do { | |||
1131 | /* | |||
1132 | * XXX | |||
1133 | * Assume that overflow results in a smaller number. | |||
1134 | */ | |||
1135 | tc = count * 10 + ev.e_c_u_event._e_ch.c - '0'; | |||
1136 | if (count > tc) { | |||
1137 | /* Toss to the next non-digit. */ | |||
1138 | do { | |||
1139 | if (v_key(sp, 0, &ev, | |||
1140 | EC_MAPCOMMAND0x002 | EC_MAPNODIGIT0x008) != GC_OK) | |||
1141 | return (1); | |||
1142 | } while (isdigit(ev.e_c_u_event._e_ch.c)); | |||
1143 | msgq(sp, M_ERR, | |||
1144 | "Number larger than %lu", ULONG_MAX0xffffffffffffffffUL); | |||
1145 | return (1); | |||
1146 | } | |||
1147 | count = tc; | |||
1148 | if (v_key(sp, 0, &ev, EC_MAPCOMMAND0x002 | EC_MAPNODIGIT0x008) != GC_OK) | |||
1149 | return (1); | |||
1150 | } while (isdigit(ev.e_c_u_event._e_ch.c)); | |||
1151 | *countp = count; | |||
1152 | return (0); | |||
1153 | } | |||
1154 | ||||
1155 | /* | |||
1156 | * v_key -- | |||
1157 | * Return the next event. | |||
1158 | */ | |||
1159 | static gcret_t | |||
1160 | v_key(SCR *sp, int command_events, EVENT *evp, u_int32_t ec_flags) | |||
1161 | { | |||
1162 | u_int32_t quote; | |||
1163 | ||||
1164 | for (quote = 0;;) { | |||
1165 | if (v_event_get(sp, evp, 0, ec_flags | quote)) | |||
1166 | return (GC_FATAL); | |||
1167 | quote = 0; | |||
1168 | ||||
1169 | switch (evp->e_event) { | |||
1170 | case E_CHARACTER: | |||
1171 | /* | |||
1172 | * !!! | |||
1173 | * Historically, ^V was ignored in the command stream, | |||
1174 | * although it had a useful side-effect of interrupting | |||
1175 | * mappings. Adding a quoting bit to the call probably | |||
1176 | * extends historic practice, but it feels right. | |||
1177 | */ | |||
1178 | if (evp->e_value_u_event._e_ch.value == K_VLNEXT) { | |||
1179 | quote = EC_QUOTED0x010; | |||
1180 | break; | |||
1181 | } | |||
1182 | return (GC_OK); | |||
1183 | case E_ERR: | |||
1184 | case E_EOF: | |||
1185 | return (GC_FATAL); | |||
1186 | case E_INTERRUPT: | |||
1187 | /* | |||
1188 | * !!! | |||
1189 | * Historically, vi beeped on command level interrupts. | |||
1190 | * | |||
1191 | * Historically, vi exited to ex mode if no file was | |||
1192 | * named on the command line, and two interrupts were | |||
1193 | * generated in a row. (Just figured you might want | |||
1194 | * to know that.) | |||
1195 | */ | |||
1196 | (void)sp->gp->scr_bell(sp); | |||
1197 | return (GC_INTERRUPT); | |||
1198 | case E_REPAINT: | |||
1199 | if (vs_repaint(sp, evp)) | |||
1200 | return (GC_FATAL); | |||
1201 | break; | |||
1202 | case E_WRESIZE: | |||
1203 | return (GC_ERR); | |||
1204 | case E_QUIT: | |||
1205 | case E_WRITE: | |||
1206 | if (command_events) | |||
1207 | return (GC_EVENT); | |||
1208 | /* FALLTHROUGH */ | |||
1209 | default: | |||
1210 | v_event_err(sp, evp); | |||
1211 | return (GC_ERR); | |||
1212 | } | |||
1213 | } | |||
1214 | /* NOTREACHED */ | |||
1215 | } | |||
1216 | ||||
1217 | #if defined(DEBUG) && defined(COMLOG) | |||
1218 | /* | |||
1219 | * v_comlog -- | |||
1220 | * Log the contents of the command structure. | |||
1221 | */ | |||
1222 | static void | |||
1223 | v_comlog(SCR *sp, VICMD *vp) | |||
1224 | { | |||
1225 | TRACE(sp, "vcmd: %c", vp->key); | |||
1226 | if (F_ISSET(vp, VC_BUFFER)(((vp)->flags) & ((0x00000200)))) | |||
1227 | TRACE(sp, " buffer: %c", vp->buffer); | |||
1228 | if (F_ISSET(vp, VC_C1SET)(((vp)->flags) & ((0x00000800)))) | |||
1229 | TRACE(sp, " c1: %lu", vp->count); | |||
1230 | if (F_ISSET(vp, VC_C2SET)(((vp)->flags) & ((0x00001000)))) | |||
1231 | TRACE(sp, " c2: %lu", vp->count2); | |||
1232 | TRACE(sp, " flags: 0x%x\n", vp->flags); | |||
1233 | } | |||
1234 | #endif |