2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
7 * See the LICENSE file for redistribution information.
12 #include <sys/types.h>
13 #include <sys/queue.h>
16 #include <bitstring.h>
22 #include "../common/common.h"
24 enum which {APPEND, CHANGE, INSERT};
26 static int ex_aci(SCR *, EXCMD *, enum which);
29 * ex_append -- :[line] a[ppend][!]
30 * Append one or more lines of new text after the specified line,
31 * or the current line if no address is specified.
33 * PUBLIC: int ex_append(SCR *, EXCMD *);
36 ex_append(SCR *sp, EXCMD *cmdp)
38 return (ex_aci(sp, cmdp, APPEND));
42 * ex_change -- :[line[,line]] c[hange][!] [count]
43 * Change one or more lines to the input text.
45 * PUBLIC: int ex_change(SCR *, EXCMD *);
48 ex_change(SCR *sp, EXCMD *cmdp)
50 return (ex_aci(sp, cmdp, CHANGE));
54 * ex_insert -- :[line] i[nsert][!]
55 * Insert one or more lines of new text before the specified line,
56 * or the current line if no address is specified.
58 * PUBLIC: int ex_insert(SCR *, EXCMD *);
61 ex_insert(SCR *sp, EXCMD *cmdp)
63 return (ex_aci(sp, cmdp, INSERT));
68 * Append, change, insert in ex.
71 ex_aci(SCR *sp, EXCMD *cmdp, enum which cmd)
76 TEXTH tiq[] = {{ 0 }};
86 * If doing a change, replace lines for as long as possible. Then,
87 * append more lines or delete remaining lines. Changes to an empty
88 * file are appends, inserts are the same as appends to the previous
92 * Set the address to which we'll append. We set sp->lno to this
93 * address as well so that autoindent works correctly when get text
96 lno = cmdp->addr1.lno;
98 if ((cmd == CHANGE || cmd == INSERT) && lno != 0)
103 * If the file isn't empty, cut changes into the unnamed buffer.
105 if (cmd == CHANGE && cmdp->addr1.lno != 0 &&
106 (cut(sp, NULL, &cmdp->addr1, &cmdp->addr2, CUT_LINEMODE) ||
107 del(sp, &cmdp->addr1, &cmdp->addr2, 1)))
112 * Anything that was left after the command separator becomes part
113 * of the inserted text. Apparently, it was common usage to enter:
115 * :g/pattern/append|stuff1
117 * and append the line of text "stuff1" to the lines containing the
118 * pattern. It was also historically legal to enter:
124 * and the text on the ex command line would be appended as well as
125 * the text inserted after it. There was an historic bug however,
126 * that the user had to enter *two* terminating lines (the '.' lines)
127 * to terminate text input mode, in this case. This whole thing
128 * could be taken too far, however. Entering:
135 * i.e. mixing and matching the forms confused the historic vi, and,
136 * not only did it take two terminating lines to terminate text input
137 * mode, but the trailing backslashes were retained on the input. We
138 * match historic practice except that we discard the backslashes.
140 * Input lines specified on the ex command line lines are separated by
141 * <newline>s. If there is a trailing delimiter an empty line was
142 * inserted. There may also be a leading delimiter, which is ignored
143 * unless it's also a trailing delimiter. It is possible to encounter
144 * a termination line, i.e. a single '.', in a global command, but not
145 * necessary if the text insert command was the last of the global
148 if (cmdp->save_cmdlen != 0) {
149 for (p = cmdp->save_cmd,
150 len = cmdp->save_cmdlen; len > 0; p = t) {
151 for (t = p; len > 0 && t[0] != '\n'; ++t, --len);
152 if (t != p || len == 0) {
153 if (F_ISSET(sp, SC_EX_GLOBAL) &&
154 t - p == 1 && p[0] == '.') {
160 if (db_append(sp, 1, lno++, p, t - p))
166 db_append(sp, 1, lno++, NULL, 0))
171 * If there's any remaining text, we're in a global, and
172 * there's more command to parse.
175 * We depend on the fact that non-global commands will eat the
176 * rest of the command line as text input, and before getting
177 * any text input from the user. Otherwise, we'd have to save
178 * off the command text before or during the call to the text
179 * input function below.
183 cmdp->save_cmdlen = len;
186 if (F_ISSET(sp, SC_EX_GLOBAL)) {
187 if ((sp->lno = lno) == 0 && db_exist(sp, 1))
193 * If not in a global command, read from the terminal.
195 * If this code is called by vi, we want to reset the terminal and use
196 * ex's line get routine. It actually works fine if we use vi's get
197 * routine, but it doesn't look as nice. Maybe if we had a separate
198 * window or something, but getting a line at a time looks awkward.
199 * However, depending on the screen that we're using, that may not
202 if (F_ISSET(sp, SC_VI)) {
203 if (gp->scr_screen(sp, SC_EX)) {
204 ex_wemsg(sp, cmdp->cmd->name, EXM_NOCANON);
208 /* If we're still in the vi screen, move out explicitly. */
209 need_newline = !F_ISSET(sp, SC_SCR_EXWROTE);
210 F_SET(sp, SC_SCR_EX | SC_SCR_EXWROTE);
212 (void)ex_puts(sp, "\n");
216 * Users of historical versions of vi sometimes get confused
217 * when they enter append mode, and can't seem to get out of
218 * it. Give them an informational message.
221 msg_cat(sp, "273|Entering ex input mode.", NULL));
222 (void)ex_puts(sp, "\n");
227 * Set input flags; the ! flag turns off autoindent for append,
230 LF_INIT(TXT_DOTTERM | TXT_NUMBER);
231 if (!FL_ISSET(cmdp->iflags, E_C_FORCE) && O_ISSET(sp, O_AUTOINDENT))
232 LF_SET(TXT_AUTOINDENT);
233 if (O_ISSET(sp, O_BEAUTIFY))
234 LF_SET(TXT_BEAUTIFY);
237 * This code can't use the common screen TEXTH structure (sp->tiq),
238 * as it may already be in use, e.g. ":append|s/abc/ABC/" would fail
239 * as we are only halfway through the text when the append code fires.
240 * Use a local structure instead. (The ex code would have to use a
241 * local structure except that we're guaranteed to finish remaining
242 * characters in the common TEXTH structure when they were inserted
243 * into the file, above.)
247 if (ex_txt(sp, tiq, 0, flags))
250 TAILQ_FOREACH(tp, tiq, q) {
251 if (db_append(sp, 1, lno++, tp->lb, tp->len))
257 * Set sp->lno to the final line number value (correcting for a
258 * possible 0 value) as that's historically correct for the final
259 * line value, whether or not the user entered any text.
261 if ((sp->lno = lno) == 0 && db_exist(sp, 1))