Annotation of src/lib/libedit/chared.c, Revision 1.27
1.27 ! christos 1: /* $NetBSD: chared.c,v 1.26 2009/02/06 12:45:25 sketch Exp $ */
1.2 lukem 2:
1.1 cgd 3: /*-
4: * Copyright (c) 1992, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This code is derived from software contributed to Berkeley by
8: * Christos Zoulas of Cornell University.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
1.19 agc 18: * 3. Neither the name of the University nor the names of its contributors
1.1 cgd 19: * may be used to endorse or promote products derived from this software
20: * without specific prior written permission.
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32: * SUCH DAMAGE.
33: */
34:
1.15 christos 35: #include "config.h"
1.1 cgd 36: #if !defined(lint) && !defined(SCCSID)
1.2 lukem 37: #if 0
1.1 cgd 38: static char sccsid[] = "@(#)chared.c 8.1 (Berkeley) 6/4/93";
1.2 lukem 39: #else
1.27 ! christos 40: __RCSID("$NetBSD: chared.c,v 1.26 2009/02/06 12:45:25 sketch Exp $");
1.2 lukem 41: #endif
1.1 cgd 42: #endif /* not lint && not SCCSID */
43:
1.7 simonb 44: /*
1.1 cgd 45: * chared.c: Character editor utilities
46: */
47: #include <stdlib.h>
48: #include "el.h"
49:
1.26 sketch 50: private void ch__clearmacro (EditLine *);
1.24 christos 51:
1.12 jdolecek 52: /* value to leave unused in line buffer */
53: #define EL_LEAVE 2
54:
1.1 cgd 55: /* cv_undo():
56: * Handle state for the vi undo command
57: */
58: protected void
1.17 christos 59: cv_undo(EditLine *el)
1.9 lukem 60: {
61: c_undo_t *vu = &el->el_chared.c_undo;
1.17 christos 62: c_redo_t *r = &el->el_chared.c_redo;
1.27 ! christos 63: size_t size;
1.16 christos 64:
1.17 christos 65: /* Save entire line for undo */
66: size = el->el_line.lastchar - el->el_line.buffer;
67: vu->len = size;
1.27 ! christos 68: vu->cursor = (int)(el->el_line.cursor - el->el_line.buffer);
1.17 christos 69: memcpy(vu->buf, el->el_line.buffer, size);
1.16 christos 70:
1.17 christos 71: /* save command info for redo */
72: r->count = el->el_state.doingarg ? el->el_state.argument : 0;
73: r->action = el->el_chared.c_vcmd.action;
74: r->pos = r->buf;
75: r->cmd = el->el_state.thiscmd;
76: r->ch = el->el_state.thisch;
77: }
78:
79: /* cv_yank():
80: * Save yank/delete data for paste
81: */
82: protected void
83: cv_yank(EditLine *el, const char *ptr, int size)
84: {
85: c_kill_t *k = &el->el_chared.c_kill;
86:
1.27 ! christos 87: memcpy(k->buf, ptr, (size_t)size);
1.17 christos 88: k->last = k->buf + size;
1.1 cgd 89: }
90:
91:
1.7 simonb 92: /* c_insert():
1.1 cgd 93: * Insert num characters
94: */
95: protected void
1.9 lukem 96: c_insert(EditLine *el, int num)
97: {
98: char *cp;
99:
1.17 christos 100: if (el->el_line.lastchar + num >= el->el_line.limit) {
1.27 ! christos 101: if (!ch_enlargebufs(el, (size_t)num))
1.17 christos 102: return; /* can't go past end of buffer */
103: }
1.9 lukem 104:
105: if (el->el_line.cursor < el->el_line.lastchar) {
106: /* if I must move chars */
107: for (cp = el->el_line.lastchar; cp >= el->el_line.cursor; cp--)
108: cp[num] = *cp;
109: }
110: el->el_line.lastchar += num;
111: }
1.1 cgd 112:
113:
114: /* c_delafter():
115: * Delete num characters after the cursor
116: */
117: protected void
1.9 lukem 118: c_delafter(EditLine *el, int num)
1.1 cgd 119: {
120:
1.9 lukem 121: if (el->el_line.cursor + num > el->el_line.lastchar)
1.27 ! christos 122: num = (int)(el->el_line.lastchar - el->el_line.cursor);
1.1 cgd 123:
1.17 christos 124: if (el->el_map.current != el->el_map.emacs) {
125: cv_undo(el);
126: cv_yank(el, el->el_line.cursor, num);
127: }
1.16 christos 128:
1.9 lukem 129: if (num > 0) {
130: char *cp;
1.1 cgd 131:
1.9 lukem 132: for (cp = el->el_line.cursor; cp <= el->el_line.lastchar; cp++)
133: *cp = cp[num];
1.1 cgd 134:
1.9 lukem 135: el->el_line.lastchar -= num;
136: }
1.1 cgd 137: }
138:
139:
1.22 mycroft 140: /* c_delafter1():
141: * Delete the character after the cursor, do not yank
142: */
143: protected void
144: c_delafter1(EditLine *el)
145: {
146: char *cp;
147:
148: for (cp = el->el_line.cursor; cp <= el->el_line.lastchar; cp++)
149: *cp = cp[1];
150:
151: el->el_line.lastchar--;
152: }
153:
154:
1.1 cgd 155: /* c_delbefore():
156: * Delete num characters before the cursor
157: */
158: protected void
1.9 lukem 159: c_delbefore(EditLine *el, int num)
1.1 cgd 160: {
161:
1.9 lukem 162: if (el->el_line.cursor - num < el->el_line.buffer)
1.27 ! christos 163: num = (int)(el->el_line.cursor - el->el_line.buffer);
1.1 cgd 164:
1.17 christos 165: if (el->el_map.current != el->el_map.emacs) {
166: cv_undo(el);
167: cv_yank(el, el->el_line.cursor - num, num);
168: }
1.16 christos 169:
1.9 lukem 170: if (num > 0) {
171: char *cp;
1.1 cgd 172:
1.9 lukem 173: for (cp = el->el_line.cursor - num;
174: cp <= el->el_line.lastchar;
175: cp++)
176: *cp = cp[num];
1.1 cgd 177:
1.9 lukem 178: el->el_line.lastchar -= num;
179: }
1.1 cgd 180: }
181:
182:
1.22 mycroft 183: /* c_delbefore1():
184: * Delete the character before the cursor, do not yank
185: */
186: protected void
187: c_delbefore1(EditLine *el)
188: {
189: char *cp;
190:
191: for (cp = el->el_line.cursor - 1; cp <= el->el_line.lastchar; cp++)
192: *cp = cp[1];
193:
194: el->el_line.lastchar--;
195: }
196:
197:
1.1 cgd 198: /* ce__isword():
199: * Return if p is part of a word according to emacs
200: */
201: protected int
1.9 lukem 202: ce__isword(int p)
1.1 cgd 203: {
1.16 christos 204: return (isalnum(p) || strchr("*?_-.[]~=", p) != NULL);
1.1 cgd 205: }
206:
207:
208: /* cv__isword():
209: * Return if p is part of a word according to vi
210: */
211: protected int
1.9 lukem 212: cv__isword(int p)
1.1 cgd 213: {
1.17 christos 214: if (isalnum(p) || p == '_')
215: return 1;
216: if (isgraph(p))
217: return 2;
218: return 0;
1.16 christos 219: }
220:
221:
222: /* cv__isWord():
223: * Return if p is part of a big word according to vi
224: */
225: protected int
226: cv__isWord(int p)
227: {
1.9 lukem 228: return (!isspace(p));
1.1 cgd 229: }
230:
231:
232: /* c__prev_word():
233: * Find the previous word
234: */
235: protected char *
1.9 lukem 236: c__prev_word(char *p, char *low, int n, int (*wtest)(int))
237: {
238: p--;
239:
240: while (n--) {
241: while ((p >= low) && !(*wtest)((unsigned char) *p))
242: p--;
243: while ((p >= low) && (*wtest)((unsigned char) *p))
244: p--;
245: }
246:
247: /* cp now points to one character before the word */
248: p++;
249: if (p < low)
250: p = low;
251: /* cp now points where we want it */
252: return (p);
1.1 cgd 253: }
254:
255:
256: /* c__next_word():
257: * Find the next word
258: */
259: protected char *
1.9 lukem 260: c__next_word(char *p, char *high, int n, int (*wtest)(int))
261: {
262: while (n--) {
263: while ((p < high) && !(*wtest)((unsigned char) *p))
264: p++;
265: while ((p < high) && (*wtest)((unsigned char) *p))
266: p++;
267: }
268: if (p > high)
269: p = high;
270: /* p now points where we want it */
271: return (p);
1.1 cgd 272: }
273:
274: /* cv_next_word():
275: * Find the next word vi style
276: */
277: protected char *
1.9 lukem 278: cv_next_word(EditLine *el, char *p, char *high, int n, int (*wtest)(int))
279: {
280: int test;
281:
282: while (n--) {
283: test = (*wtest)((unsigned char) *p);
284: while ((p < high) && (*wtest)((unsigned char) *p) == test)
285: p++;
286: /*
287: * vi historically deletes with cw only the word preserving the
288: * trailing whitespace! This is not what 'w' does..
289: */
1.16 christos 290: if (n || el->el_chared.c_vcmd.action != (DELETE|INSERT))
1.9 lukem 291: while ((p < high) && isspace((unsigned char) *p))
292: p++;
293: }
1.1 cgd 294:
1.9 lukem 295: /* p now points where we want it */
296: if (p > high)
297: return (high);
298: else
299: return (p);
1.1 cgd 300: }
301:
302:
303: /* cv_prev_word():
304: * Find the previous word vi style
305: */
306: protected char *
1.16 christos 307: cv_prev_word(char *p, char *low, int n, int (*wtest)(int))
1.1 cgd 308: {
1.9 lukem 309: int test;
1.1 cgd 310:
1.16 christos 311: p--;
1.9 lukem 312: while (n--) {
1.16 christos 313: while ((p > low) && isspace((unsigned char) *p))
314: p--;
1.9 lukem 315: test = (*wtest)((unsigned char) *p);
316: while ((p >= low) && (*wtest)((unsigned char) *p) == test)
317: p--;
318: }
1.16 christos 319: p++;
1.1 cgd 320:
1.9 lukem 321: /* p now points where we want it */
322: if (p < low)
323: return (low);
324: else
325: return (p);
1.1 cgd 326: }
327:
328:
329: #ifdef notdef
330: /* c__number():
331: * Ignore character p points to, return number appearing after that.
332: * A '$' by itself means a big number; "$-" is for negative; '^' means 1.
333: * Return p pointing to last char used.
334: */
335: protected char *
1.9 lukem 336: c__number(
337: char *p, /* character position */
338: int *num, /* Return value */
339: int dval) /* dval is the number to subtract from like $-3 */
340: {
341: int i;
342: int sign = 1;
343:
344: if (*++p == '^') {
345: *num = 1;
346: return (p);
347: }
348: if (*p == '$') {
349: if (*++p != '-') {
350: *num = 0x7fffffff; /* Handle $ */
351: return (--p);
352: }
353: sign = -1; /* Handle $- */
354: ++p;
355: }
356: for (i = 0; isdigit((unsigned char) *p); i = 10 * i + *p++ - '0')
357: continue;
358: *num = (sign < 0 ? dval - i : i);
359: return (--p);
1.1 cgd 360: }
361: #endif
362:
363: /* cv_delfini():
364: * Finish vi delete action
365: */
366: protected void
1.9 lukem 367: cv_delfini(EditLine *el)
1.1 cgd 368: {
1.9 lukem 369: int size;
1.17 christos 370: int action = el->el_chared.c_vcmd.action;
1.1 cgd 371:
1.17 christos 372: if (action & INSERT)
1.9 lukem 373: el->el_map.current = el->el_map.key;
1.1 cgd 374:
1.9 lukem 375: if (el->el_chared.c_vcmd.pos == 0)
1.17 christos 376: /* sanity */
1.9 lukem 377: return;
378:
1.27 ! christos 379: size = (int)(el->el_line.cursor - el->el_chared.c_vcmd.pos);
1.17 christos 380: if (size == 0)
381: size = 1;
1.16 christos 382: el->el_line.cursor = el->el_chared.c_vcmd.pos;
1.17 christos 383: if (action & YANK) {
384: if (size > 0)
385: cv_yank(el, el->el_line.cursor, size);
386: else
387: cv_yank(el, el->el_line.cursor + size, -size);
1.9 lukem 388: } else {
1.17 christos 389: if (size > 0) {
390: c_delafter(el, size);
391: re_refresh_cursor(el);
392: } else {
393: c_delbefore(el, -size);
394: el->el_line.cursor += size;
395: }
1.9 lukem 396: }
1.17 christos 397: el->el_chared.c_vcmd.action = NOP;
1.1 cgd 398: }
399:
400:
401: #ifdef notdef
402: /* ce__endword():
403: * Go to the end of this word according to emacs
404: */
405: protected char *
1.9 lukem 406: ce__endword(char *p, char *high, int n)
407: {
408: p++;
1.1 cgd 409:
1.9 lukem 410: while (n--) {
411: while ((p < high) && isspace((unsigned char) *p))
412: p++;
413: while ((p < high) && !isspace((unsigned char) *p))
414: p++;
415: }
416:
417: p--;
418: return (p);
1.1 cgd 419: }
420: #endif
421:
422:
423: /* cv__endword():
424: * Go to the end of this word according to vi
425: */
426: protected char *
1.16 christos 427: cv__endword(char *p, char *high, int n, int (*wtest)(int))
1.9 lukem 428: {
1.16 christos 429: int test;
430:
1.9 lukem 431: p++;
1.1 cgd 432:
1.9 lukem 433: while (n--) {
434: while ((p < high) && isspace((unsigned char) *p))
435: p++;
436:
1.16 christos 437: test = (*wtest)((unsigned char) *p);
438: while ((p < high) && (*wtest)((unsigned char) *p) == test)
439: p++;
1.9 lukem 440: }
441: p--;
442: return (p);
1.1 cgd 443: }
444:
445: /* ch_init():
446: * Initialize the character editor
447: */
448: protected int
1.9 lukem 449: ch_init(EditLine *el)
1.1 cgd 450: {
1.24 christos 451: c_macro_t *ma = &el->el_chared.c_macro;
452:
1.11 christos 453: el->el_line.buffer = (char *) el_malloc(EL_BUFSIZ);
454: if (el->el_line.buffer == NULL)
455: return (-1);
456:
1.9 lukem 457: (void) memset(el->el_line.buffer, 0, EL_BUFSIZ);
458: el->el_line.cursor = el->el_line.buffer;
459: el->el_line.lastchar = el->el_line.buffer;
1.16 christos 460: el->el_line.limit = &el->el_line.buffer[EL_BUFSIZ - EL_LEAVE];
1.9 lukem 461:
1.11 christos 462: el->el_chared.c_undo.buf = (char *) el_malloc(EL_BUFSIZ);
463: if (el->el_chared.c_undo.buf == NULL)
464: return (-1);
1.9 lukem 465: (void) memset(el->el_chared.c_undo.buf, 0, EL_BUFSIZ);
1.16 christos 466: el->el_chared.c_undo.len = -1;
467: el->el_chared.c_undo.cursor = 0;
1.17 christos 468: el->el_chared.c_redo.buf = (char *) el_malloc(EL_BUFSIZ);
469: if (el->el_chared.c_redo.buf == NULL)
1.16 christos 470: return (-1);
1.17 christos 471: el->el_chared.c_redo.pos = el->el_chared.c_redo.buf;
472: el->el_chared.c_redo.lim = el->el_chared.c_redo.buf + EL_BUFSIZ;
473: el->el_chared.c_redo.cmd = ED_UNASSIGNED;
1.9 lukem 474:
475: el->el_chared.c_vcmd.action = NOP;
476: el->el_chared.c_vcmd.pos = el->el_line.buffer;
477:
478: el->el_chared.c_kill.buf = (char *) el_malloc(EL_BUFSIZ);
1.11 christos 479: if (el->el_chared.c_kill.buf == NULL)
480: return (-1);
1.9 lukem 481: (void) memset(el->el_chared.c_kill.buf, 0, EL_BUFSIZ);
482: el->el_chared.c_kill.mark = el->el_line.buffer;
483: el->el_chared.c_kill.last = el->el_chared.c_kill.buf;
484:
485: el->el_map.current = el->el_map.key;
486:
487: el->el_state.inputmode = MODE_INSERT; /* XXX: save a default */
488: el->el_state.doingarg = 0;
489: el->el_state.metanext = 0;
490: el->el_state.argument = 1;
491: el->el_state.lastcmd = ED_UNASSIGNED;
492:
1.24 christos 493: ma->level = -1;
494: ma->offset = 0;
495: ma->macro = (char **) el_malloc(EL_MAXMACRO * sizeof(char *));
496: if (ma->macro == NULL)
1.11 christos 497: return (-1);
1.9 lukem 498: return (0);
1.1 cgd 499: }
500:
501: /* ch_reset():
502: * Reset the character editor
503: */
504: protected void
1.24 christos 505: ch_reset(EditLine *el, int mclear)
1.1 cgd 506: {
1.9 lukem 507: el->el_line.cursor = el->el_line.buffer;
508: el->el_line.lastchar = el->el_line.buffer;
1.1 cgd 509:
1.16 christos 510: el->el_chared.c_undo.len = -1;
511: el->el_chared.c_undo.cursor = 0;
1.1 cgd 512:
1.9 lukem 513: el->el_chared.c_vcmd.action = NOP;
514: el->el_chared.c_vcmd.pos = el->el_line.buffer;
1.1 cgd 515:
1.9 lukem 516: el->el_chared.c_kill.mark = el->el_line.buffer;
1.1 cgd 517:
1.9 lukem 518: el->el_map.current = el->el_map.key;
1.1 cgd 519:
1.9 lukem 520: el->el_state.inputmode = MODE_INSERT; /* XXX: save a default */
521: el->el_state.doingarg = 0;
522: el->el_state.metanext = 0;
523: el->el_state.argument = 1;
524: el->el_state.lastcmd = ED_UNASSIGNED;
1.1 cgd 525:
1.25 christos 526: el->el_history.eventno = 0;
527:
1.24 christos 528: if (mclear)
529: ch__clearmacro(el);
530: }
1.1 cgd 531:
1.24 christos 532: private void
1.27 ! christos 533: ch__clearmacro(EditLine *el)
1.24 christos 534: {
535: c_macro_t *ma = &el->el_chared.c_macro;
536: while (ma->level >= 0)
537: el_free((ptr_t)ma->macro[ma->level--]);
1.1 cgd 538: }
539:
1.12 jdolecek 540: /* ch_enlargebufs():
541: * Enlarge line buffer to be able to hold twice as much characters.
542: * Returns 1 if successful, 0 if not.
543: */
544: protected int
1.27 ! christos 545: ch_enlargebufs(EditLine *el, size_t addlen)
1.12 jdolecek 546: {
1.13 lukem 547: size_t sz, newsz;
548: char *newbuffer, *oldbuf, *oldkbuf;
1.12 jdolecek 549:
1.13 lukem 550: sz = el->el_line.limit - el->el_line.buffer + EL_LEAVE;
551: newsz = sz * 2;
552: /*
553: * If newly required length is longer than current buffer, we need
554: * to make the buffer big enough to hold both old and new stuff.
555: */
556: if (addlen > sz) {
557: while(newsz - sz < addlen)
558: newsz *= 2;
559: }
560:
561: /*
562: * Reallocate line buffer.
563: */
564: newbuffer = el_realloc(el->el_line.buffer, newsz);
565: if (!newbuffer)
566: return 0;
567:
568: /* zero the newly added memory, leave old data in */
569: (void) memset(&newbuffer[sz], 0, newsz - sz);
570:
571: oldbuf = el->el_line.buffer;
572:
573: el->el_line.buffer = newbuffer;
574: el->el_line.cursor = newbuffer + (el->el_line.cursor - oldbuf);
575: el->el_line.lastchar = newbuffer + (el->el_line.lastchar - oldbuf);
1.16 christos 576: /* don't set new size until all buffers are enlarged */
577: el->el_line.limit = &newbuffer[sz - EL_LEAVE];
1.13 lukem 578:
579: /*
580: * Reallocate kill buffer.
581: */
582: newbuffer = el_realloc(el->el_chared.c_kill.buf, newsz);
583: if (!newbuffer)
584: return 0;
1.12 jdolecek 585:
1.13 lukem 586: /* zero the newly added memory, leave old data in */
587: (void) memset(&newbuffer[sz], 0, newsz - sz);
1.12 jdolecek 588:
1.13 lukem 589: oldkbuf = el->el_chared.c_kill.buf;
1.12 jdolecek 590:
1.13 lukem 591: el->el_chared.c_kill.buf = newbuffer;
592: el->el_chared.c_kill.last = newbuffer +
1.12 jdolecek 593: (el->el_chared.c_kill.last - oldkbuf);
1.13 lukem 594: el->el_chared.c_kill.mark = el->el_line.buffer +
1.12 jdolecek 595: (el->el_chared.c_kill.mark - oldbuf);
596:
1.13 lukem 597: /*
598: * Reallocate undo buffer.
599: */
600: newbuffer = el_realloc(el->el_chared.c_undo.buf, newsz);
601: if (!newbuffer)
602: return 0;
603:
604: /* zero the newly added memory, leave old data in */
605: (void) memset(&newbuffer[sz], 0, newsz - sz);
1.16 christos 606: el->el_chared.c_undo.buf = newbuffer;
1.13 lukem 607:
1.17 christos 608: newbuffer = el_realloc(el->el_chared.c_redo.buf, newsz);
1.16 christos 609: if (!newbuffer)
610: return 0;
1.17 christos 611: el->el_chared.c_redo.pos = newbuffer +
612: (el->el_chared.c_redo.pos - el->el_chared.c_redo.buf);
613: el->el_chared.c_redo.lim = newbuffer +
614: (el->el_chared.c_redo.lim - el->el_chared.c_redo.buf);
615: el->el_chared.c_redo.buf = newbuffer;
1.13 lukem 616:
617: if (!hist_enlargebuf(el, sz, newsz))
618: return 0;
1.12 jdolecek 619:
1.16 christos 620: /* Safe to set enlarged buffer size */
1.21 christos 621: el->el_line.limit = &el->el_line.buffer[newsz - EL_LEAVE];
1.13 lukem 622: return 1;
1.12 jdolecek 623: }
1.1 cgd 624:
625: /* ch_end():
626: * Free the data structures used by the editor
627: */
628: protected void
1.9 lukem 629: ch_end(EditLine *el)
1.1 cgd 630: {
1.9 lukem 631: el_free((ptr_t) el->el_line.buffer);
632: el->el_line.buffer = NULL;
633: el->el_line.limit = NULL;
634: el_free((ptr_t) el->el_chared.c_undo.buf);
635: el->el_chared.c_undo.buf = NULL;
1.17 christos 636: el_free((ptr_t) el->el_chared.c_redo.buf);
637: el->el_chared.c_redo.buf = NULL;
638: el->el_chared.c_redo.pos = NULL;
639: el->el_chared.c_redo.lim = NULL;
640: el->el_chared.c_redo.cmd = ED_UNASSIGNED;
1.9 lukem 641: el_free((ptr_t) el->el_chared.c_kill.buf);
642: el->el_chared.c_kill.buf = NULL;
1.24 christos 643: ch_reset(el, 1);
1.9 lukem 644: el_free((ptr_t) el->el_chared.c_macro.macro);
645: el->el_chared.c_macro.macro = NULL;
1.1 cgd 646: }
647:
648:
649: /* el_insertstr():
650: * Insert string at cursorI
651: */
652: public int
1.9 lukem 653: el_insertstr(EditLine *el, const char *s)
654: {
1.14 christos 655: size_t len;
1.9 lukem 656:
657: if ((len = strlen(s)) == 0)
658: return (-1);
1.12 jdolecek 659: if (el->el_line.lastchar + len >= el->el_line.limit) {
660: if (!ch_enlargebufs(el, len))
661: return (-1);
662: }
1.9 lukem 663:
1.14 christos 664: c_insert(el, (int)len);
1.9 lukem 665: while (*s)
666: *el->el_line.cursor++ = *s++;
667: return (0);
1.1 cgd 668: }
669:
670:
671: /* el_deletestr():
672: * Delete num characters before the cursor
673: */
674: public void
1.9 lukem 675: el_deletestr(EditLine *el, int n)
676: {
677: if (n <= 0)
678: return;
679:
680: if (el->el_line.cursor < &el->el_line.buffer[n])
681: return;
682:
683: c_delbefore(el, n); /* delete before dot */
684: el->el_line.cursor -= n;
685: if (el->el_line.cursor < el->el_line.buffer)
686: el->el_line.cursor = el->el_line.buffer;
1.1 cgd 687: }
688:
689: /* c_gets():
690: * Get a string
691: */
692: protected int
1.18 christos 693: c_gets(EditLine *el, char *buf, const char *prompt)
1.9 lukem 694: {
695: char ch;
1.27 ! christos 696: ssize_t len;
1.18 christos 697: char *cp = el->el_line.buffer;
698:
699: if (prompt) {
700: len = strlen(prompt);
1.27 ! christos 701: memcpy(cp, prompt, (size_t)len);
1.18 christos 702: cp += len;
703: }
704: len = 0;
705:
706: for (;;) {
707: el->el_line.cursor = cp;
708: *cp = ' ';
709: el->el_line.lastchar = cp + 1;
710: re_refresh(el);
711:
712: if (el_getc(el, &ch) != 1) {
713: ed_end_of_file(el, 0);
714: len = -1;
715: break;
716: }
1.1 cgd 717:
1.9 lukem 718: switch (ch) {
1.18 christos 719:
1.9 lukem 720: case 0010: /* Delete and backspace */
721: case 0177:
1.27 ! christos 722: if (len == 0) {
1.18 christos 723: len = -1;
724: break;
1.9 lukem 725: }
1.18 christos 726: cp--;
727: continue;
1.9 lukem 728:
729: case 0033: /* ESC */
730: case '\r': /* Newline */
731: case '\n':
1.18 christos 732: buf[len] = ch;
1.9 lukem 733: break;
734:
735: default:
1.18 christos 736: if (len >= EL_BUFSIZ - 16)
1.9 lukem 737: term_beep(el);
738: else {
739: buf[len++] = ch;
1.18 christos 740: *cp++ = ch;
1.9 lukem 741: }
1.18 christos 742: continue;
1.9 lukem 743: }
1.18 christos 744: break;
1.9 lukem 745: }
1.18 christos 746:
747: el->el_line.buffer[0] = '\0';
748: el->el_line.lastchar = el->el_line.buffer;
749: el->el_line.cursor = el->el_line.buffer;
1.27 ! christos 750: return (int)len;
1.1 cgd 751: }
752:
753:
754: /* c_hpos():
755: * Return the current horizontal position of the cursor
756: */
757: protected int
1.9 lukem 758: c_hpos(EditLine *el)
1.1 cgd 759: {
1.9 lukem 760: char *ptr;
1.1 cgd 761:
1.9 lukem 762: /*
763: * Find how many characters till the beginning of this line.
764: */
765: if (el->el_line.cursor == el->el_line.buffer)
766: return (0);
767: else {
768: for (ptr = el->el_line.cursor - 1;
769: ptr >= el->el_line.buffer && *ptr != '\n';
770: ptr--)
771: continue;
1.27 ! christos 772: return (int)(el->el_line.cursor - ptr - 1);
1.9 lukem 773: }
1.1 cgd 774: }
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