void
Buffer::update(int ch)
{
switch (ch) {
case KEY_UP:
prevline();
break;
case KEY_DOWN:
nextline();
break;
case KEY_RIGHT:
nextchar();
break;
case KEY_LEFT:
prevchar();
break;
case KEY_HOME:
begofline();
break;
case KEY_END:
endofline();
break;
case 127:
delchar();
break;
case '\n':
case '\r':
newline();
break;
default:
addchar(ch);
}
}
int main(void)
{
char c;
char s[80];
printf("Input a string: ");
gets(s);
printf("Input a char: ");
scanf("%c", &c);
delchar(s, c);
printf("After deleted,the string is:%s", s);
return 0;
}
int main(void){
int i, tem;
char inchar[MAXCHAR];
char c;
for(i=0; i<MAXCHAR-1; i++){
inchar[i] = 0;
}
getText(inchar, MAXCHAR);
printtext(inchar);
for(i=0; i<MAXCHAR-1 && inchar[i] != '\0'; i++){
c = inchar[i];
if(c == '\"'){
i = recursionQuote(inchar, i+1);
}
else if(c == '/' && inchar[i+1] == '/'){
tem = recursionNewline(inchar, i+2);
delchar(inchar, i, MAXCHAR, tem-i);
}
else if(c == '/' && inchar[i+1] == '*'){
tem = recursionAno(inchar, i+2);
delchar(inchar, i, MAXCHAR, tem-i);
}
}
i = 0;
while((c=inchar[i]) != '\0'){
putchar(inchar[i]);
i++;
}
printf("\n");
return 0;
}
static char *checkcmd(char *buf, const char *cmd)
{
char *p, *q;
int n;
p = buf;
while (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r')
p++;
n = strlen(cmd);
if (strncasecmp(p, cmd, n))
return NULL;
p += n;
while (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r')
p++;
q = p;
while (*q && *q != ' ' && *q != '\t' && *q != '\n' && *q != '\r') {
if (*q == '"') {
delchar(q);
while (*q && *q != '"') {
if (*q == '\\')
delchar(q);
q++;
}
delchar(q);
}
else
q++;
}
*q = 0;
return p;
}
int main()
{
char str[40];
int k,n;
//输入
printf("请输入一个字符串：\n");
gets(str);
printf("请输入要在何处删除(1~%d):\n",strlen(str));
scanf("%d",&k);
printf("请输入要删除多少字符:\n");
scanf("%d",&n);
//删除
delchar(str,k,n);
//输出
puts(str);
return 0;
}
void main()
{
char c;
char str[80];
int repeat, ri;
void delchar(char *str, char c);
scanf("%d", &repeat);
getchar();
for(ri = 1; ri <= repeat; ri++){
gets(str);
scanf("%c", &c);
getchar();
delchar(str, c);
printf("result: ");
puts(str);
}
}
/*------------------------------------------------------------------------
* ttyiin - handle interrupt-level input for a tty
*------------------------------------------------------------------------
*/
void
ttyiin(struct devsw *pdev, unsigned char ch)
{
struct tty *ptty = (struct tty *)pdev->dvioblk;
struct tchars *ptc;
static unsigned char lastc;
if (ch == '\n' && lastc == '\r')
return;
lastc = ch;
if (ptty->tty_iflags & TIF_RAW) {
iputchar(ptty, ch);
if (scount(ptty->tty_isema) <= 0)
signal(ptty->tty_isema);
return;
}
if (ch == '\r')
ch = '\n';
ptc = &ptty->tty_tchars;
if (ch == ptc->tc_erase) {
delchar(ptty);
return;
} else if (ch == ptc->tc_werase) {
delword(ptty);
return;
} else if (ch == ptc->tc_reprint) {
reprint(ptty);
return;
} else if (ch == ptc->tc_intr) {
send(ptty->tty_cpid, INTRMSG);
return;
} else if (ch == ptc->tc_eof) {
ptty->tty_iflags |= TIF_EOF;
} else if (ch == ptc->tc_status) {
x_ps(CONSOLE, CONSOLE, CONSOLE, 0);
}
iputchar(ptty, ch);
if ((ptty->tty_iflags & (TIF_CBREAK|TIF_RAW)) ||
ch == ptty->tty_tchars.tc_eol ||
ch == ptty->tty_tchars.tc_eof)
if (scount(ptty->tty_isema) <= 0)
signal(ptty->tty_isema);
}
void
edit()
{
extern bool_t need_redraw;
int c;
register char *p, *q;
Prenum = 0;
/* position the display and the cursor at the top of the file. */
*Topchar = *Filemem;
*Curschar = *Filemem;
Cursrow = Curscol = 0;
do_mlines(); /* check for mode lines before starting */
updatescreen();
for ( ;; ) {
/* Figure out where the cursor is based on Curschar. */
cursupdate();
if (need_redraw && !anyinput()) {
updatescreen();
need_redraw = FALSE;
}
if (!anyinput())
windgoto(Cursrow,Curscol);
c = vgetc();
if (State == NORMAL) {
/* We're in the normal (non-insert) mode. */
/* Pick up any leading digits and compute 'Prenum' */
if ( (Prenum>0 && isdigit(c)) || (isdigit(c) && c!='0') ){
Prenum = Prenum*10 + (c-'0');
continue;
}
/* execute the command */
normal(c);
Prenum = 0;
} else {
/*
* Insert or Replace mode.
*/
switch (c) {
case ESC: /* an escape ends input mode */
/*
* If we just did an auto-indent, truncate the
* line, and put the cursor back.
*/
if (did_ai) {
Curschar->linep->s[0] = NUL;
Curschar->index = 0;
did_ai = FALSE;
}
set_want_col = TRUE;
/* Don't end up on a '\n' if you can help it. */
if (gchar(Curschar) == NUL && Curschar->index != 0)
dec(Curschar);
/*
* The cursor should end up on the last inserted
* character. This is an attempt to match the real
* 'vi', but it may not be quite right yet.
*/
if (Curschar->index != 0 && !endofline(Curschar))
dec(Curschar);
State = NORMAL;
msg("");
/* construct the Redo buffer */
p=Redobuff;
q=Insbuff;
while ( q < Insptr )
*p++ = *q++;
*p++ = ESC;
*p = NUL;
updatescreen();
break;
case CTRL('D'):
/*
* Control-D is treated as a backspace in insert
* mode to make auto-indent easier. This isn't
* completely compatible with vi, but it's a lot
* easier than doing it exactly right, and the
* difference isn't very noticeable.
*/
case BS:
/* can't backup past starting point */
if (Curschar->linep == Insstart->linep &&
Curschar->index <= Insstart->index) {
beep();
break;
}
/* can't backup to a previous line */
if (Curschar->linep != Insstart->linep &&
Curschar->index <= 0) {
beep();
break;
}
did_ai = FALSE;
dec(Curschar);
if (State == INSERT)
delchar(TRUE);
/*
* It's a little strange to put backspaces into
* the redo buffer, but it makes auto-indent a
* lot easier to deal with.
*/
*Insptr++ = BS;
Ninsert++;
cursupdate();
updateline();
break;
case CR:
case NL:
if (State == REPLACE) /* DMT added, 12/89 */
delchar(FALSE);
*Insptr++ = NL;
Ninsert++;
opencmd(FORWARD, TRUE); /* open a new line */
break;
default:
did_ai = FALSE;
insertchar(c);
break;
}
}
}
}
void
edit()
{
int c;
char *p, *q;
Prenum = 0;
/* position the display and the cursor at the top of the file. */
*Topchar = *Filemem;
*Curschar = *Filemem;
Cursrow = Curscol = 0;
for ( ;; ) {
/* Figure out where the cursor is based on Curschar. */
cursupdate();
windgoto(Cursrow,Curscol);
c = vgetc();
if (State == NORMAL) {
/* We're in the normal (non-insert) mode. */
/* Pick up any leading digits and compute 'Prenum' */
if ( (Prenum>0 && isdigit(c)) || (isdigit(c) && c!='0') ){
Prenum = Prenum*10 + (c-'0');
continue;
}
/* execute the command */
normal(c);
Prenum = 0;
} else {
switch (c) { /* We're in insert mode */
case ESC: /* an escape ends input mode */
set_want_col = TRUE;
/* Don't end up on a '\n' if you can help it. */
if (gchar(Curschar) == NUL && Curschar->index != 0)
dec(Curschar);
/*
* The cursor should end up on the last inserted
* character. This is an attempt to match the real
* 'vi', but it may not be quite right yet.
*/
if (Curschar->index != 0 && !endofline(Curschar))
dec(Curschar);
State = NORMAL;
msg("");
*Uncurschar = *Insstart;
Undelchars = Ninsert;
/* Undobuff[0] = '\0'; */
/* construct the Redo buffer */
p=Redobuff;
q=Insbuff;
while ( q < Insptr )
*p++ = *q++;
*p++ = ESC;
*p = NUL;
updatescreen();
break;
case CTRL('D'):
/*
* Control-D is treated as a backspace in insert
* mode to make auto-indent easier. This isn't
* completely compatible with vi, but it's a lot
* easier than doing it exactly right, and the
* difference isn't very noticeable.
*/
case BS:
/* can't backup past starting point */
if (Curschar->linep == Insstart->linep &&
Curschar->index <= Insstart->index) {
beep();
break;
}
/* can't backup to a previous line */
if (Curschar->linep != Insstart->linep &&
Curschar->index <= 0) {
beep();
break;
}
did_ai = FALSE;
dec(Curschar);
delchar(TRUE);
Insptr--;
Ninsert--;
cursupdate();
updateline();
break;
case CR:
case NL:
*Insptr++ = NL;
Ninsert++;
opencmd(FORWARD, TRUE); /* open a new line */
cursupdate();
updatescreen();
break;
default:
did_ai = FALSE;
insertchar(c);
break;
}
}
}
}
void
normal()
{
register u_char c;
long n;
int flag = FALSE;
int type = 0; /* used in some operations to modify type */
int dir = FORWARD; /* search direction */
u_char nchar = NUL;
int finish_op;
linenr_t Prenum1;
char searchbuff[CMDBUFFSIZE]; /* buffer for search string */
FPOS *pos;
register char *ptr;
int command_busy = FALSE;
static linenr_t redo_Quote_nlines;
static int redo_Quote_type;
static long redo_Quote_col;
Prenum = 0;
/*
* If there is an operator pending, then the command we take this time
* will terminate it. Finish_op tells us to finish the operation before
* returning this time (unless the operation was cancelled).
*/
finish_op = (operator != NOP);
if (!finish_op && !yankbuffer)
opnum = 0;
if (vpeekc() == NUL || KeyTyped == TRUE)
premsg(NUL, NUL);
State = NORMAL_BUSY;
c = vgetc();
/* Pick up any leading digits and compute 'Prenum' */
while ((c >= '1' && c <= '9') || (Prenum > 0 && (c == DEL || c == '0')))
{
if (c == DEL)
Prenum /= 10;
else
Prenum = Prenum * 10 + (c - '0');
premsg(' ', NUL);
c = vgetc();
}
/*
* If we're in the middle of an operator (including after entering a yank
* buffer with ") AND we had a count before the
* operator, then that count overrides the current value of Prenum. What
* this means effectively, is that commands like "3dw" get turned into
* "d3w" which makes things fall into place pretty neatly.
* If you give a count before AND after the operator, they are multiplied.
*/
if (opnum != 0)
{
if (Prenum)
Prenum *= opnum;
else
Prenum = opnum;
opnum = 0;
}
Prenum1 = (Prenum == 0 ? 1 : Prenum); /* Prenum often defaults to 1 */
premsg(c, NUL);
/*
* get an additional character if we need one
*/
if (strchr("@zZtTfF[]rm'`\"", c) || (c == 'v' && Recording == FALSE))
{
State = NOMAPPING;
nchar = vgetc(); /* no macro mapping for this char */
premsg(c, nchar);
}
flushbuf(); /* flush the premsg() characters onto the screen so we can
see them while the command is being executed */
if (c != 'z') /* the 'z' command gets another character */
{
State = NORMAL;
script_winsize_pp();
}
if (nchar == ESC)
{
CLEAROP;
goto normal_end;
}
switch (c)
{
/*
* 0: Macros
*/
case 'v': /* (stop) recording into a named buffer */
CHECKCLEAROP;
if (!dorecord(nchar))
CLEAROPBEEP;
break;
case '@': /* execute a named buffer */
CHECKCLEAROP;
while (Prenum1--)
if (!doexecbuf(nchar))
{
CLEAROPBEEP;
break;
}
break;
/*
* 1: Screen positioning commands
*/
case CTRL('D'):
flag = TRUE;
case CTRL('U'):
CHECKCLEAROP;
if (Prenum)
p_scroll = (Prenum > Rows - 1) ? Rows - 1 : Prenum;
n = (p_scroll < Rows) ? p_scroll : Rows - 1;
if (flag)
{
scrollup(n);
onedown(n);
}
else
{
scrolldown(n);
oneup(n);
}
updateScreen(VALID);
break;
case CTRL('B'):
case K_SUARROW:
dir = BACKWARD;
case CTRL('F'):
case K_SDARROW:
CHECKCLEAROP;
onepage(dir, Prenum1);
break;
case CTRL('E'):
CHECKCLEAROP;
scrollup(Prenum1);
updateScreen(VALID);
break;
case CTRL('Y'):
CHECKCLEAROP;
scrolldown(Prenum1);
updateScreen(VALID);
break;
case 'z':
CHECKCLEAROP;
if (isdigit(nchar))
{
/*
* we misuse some variables to be able to call premsg()
*/
operator = c;
opnum = Prenum;
Prenum = nchar - '0';
for (;;)
{
premsg(' ', NUL);
nchar = vgetc();
State = NORMAL;
script_winsize_pp();
if (nchar == DEL)
Prenum /= 10;
else if (isdigit(nchar))
Prenum = Prenum * 10 + (nchar - '0');
else if (nchar == CR)
{
set_winsize((int)Columns, (int)Prenum, TRUE);
break;
}
else
{
CLEAROPBEEP;
break;
}
}
operator = NOP;
break;
}
if (Prenum) /* line number given */
{
if (Prenum > line_count)
Curpos.lnum = line_count;
else
Curpos.lnum = Prenum;
}
State = NORMAL;
script_winsize_pp();
switch (nchar)
{
case NL: /* put Curpos at top of screen */
case CR:
Topline = Prenum;
updateScreen(VALID);
break;
case '.': /* put Curspos in middle of screen */
n = Rows / 2;
goto dozcmd;
case '-': /* put Curpos at bottom of screen */
n = Rows - 1;
/* FALLTHROUGH */
dozcmd:
{
register linenr_t lp = Prenum;
register long l = 0;
while ((l < n) && (lp != 0))
{
l += plines(lp);
Topline = lp;
--lp;
}
}
updateScreen(VALID);
break;
default:
CLEAROPBEEP;
}
break;
/*
* 2: Control commands
*/
case ':':
if (Quote.lnum)
goto dooperator;
CHECKCLEAROP;
docmdline(NULL);
break;
case K_HELP:
CHECKCLEAROP;
help();
break;
case CTRL('L'):
CHECKCLEAROP;
updateScreen(CLEAR);
break;
case CTRL('G'):
CHECKCLEAROP;
fileinfo();
break;
case K_CCIRCM: /* shorthand command */
CHECKCLEAROPQ;
if (getaltfile((int)Prenum, (linenr_t)0, TRUE))
emsg(e_noalt);
break;
case 'Z': /* write, if changed, and exit */
CHECKCLEAROPQ;
if (nchar != 'Z')
{
CLEAROPBEEP;
break;
}
stuffReadbuff(":x\n");
break;
case CTRL(']'): /* :ta to current identifier */
CHECKCLEAROPQ;
case '*': /* / to current identifier */
case '#': /* ? to current identifier */
case 'K': /* run program for current identifier */
{
register int col;
ptr = nr2ptr(Curpos.lnum);
col = Curpos.col;
/*
* skip to start of identifier.
*/
while (ptr[col] != NUL && !isidchar(ptr[col]))
++col;
/*
* Back up to start of identifier. This doesn't match the
* real vi but I like it a little better and it shouldn't bother
* anyone.
*/
while (col > 0 && isidchar(ptr[col - 1]))
--col;
if (!isidchar(ptr[col]))
{
CLEAROPBEEP;
break;
}
if (Prenum)
stuffnumReadbuff(Prenum);
switch (c)
{
case '*':
stuffReadbuff("/");
break;
case '#':
stuffReadbuff("?");
break;
case 'K':
stuffReadbuff(":! ");
stuffReadbuff(p_kp);
stuffReadbuff(" ");
break;
default:
stuffReadbuff(":ta ");
}
/*
* Now grab the chars in the identifier
*/
while (isidchar(ptr[col]))
{
stuffReadbuff(mkstr(ptr[col]));
++col;
}
stuffReadbuff("\n");
}
break;
case CTRL('T'): /* backwards in tag stack */
CHECKCLEAROPQ;
dotag("", 2, (int)Prenum1);
break;
/*
* Cursor motions
*/
case 'G':
mtype = MLINE;
setpcmark();
if (Prenum == 0 || Prenum > line_count)
Curpos.lnum = line_count;
else
Curpos.lnum = Prenum;
beginline(TRUE);
break;
case 'H':
case 'M':
if (c == 'M')
n = Rows / 2;
else
n = Prenum;
mtype = MLINE;
Curpos.lnum = Topline;
while (n && onedown((long)1))
--n;
beginline(TRUE);
break;
case 'L':
mtype = MLINE;
Curpos.lnum = Botline - 1;
for (n = Prenum; n && oneup((long)1); n--)
;
beginline(TRUE);
break;
case 'l':
case K_RARROW:
case ' ':
mtype = MCHAR;
mincl = FALSE;
n = Prenum1;
while (n--)
{
if (!oneright())
{
if (operator == NOP)
beep();
else
{
if (lineempty(Curpos.lnum))
CLEAROPBEEP;
else
{
mincl = TRUE;
if (n)
beep();
}
}
break;
}
}
set_want_col = TRUE;
break;
case 'h':
case K_LARROW:
case CTRL('H'):
case DEL:
mtype = MCHAR;
mincl = FALSE;
n = Prenum1;
while (n--)
{
if (!oneleft())
{
if (operator != DELETE && operator != CHANGE)
beep();
else if (Prenum1 == 1)
CLEAROPBEEP;
break;
}
}
set_want_col = TRUE;
break;
case '-':
flag = TRUE;
/* FALLTHROUGH */
case 'k':
case K_UARROW:
case CTRL('P'):
mtype = MLINE;
if (!oneup(Prenum1))
CLEAROPBEEP;
else if (flag)
beginline(TRUE);
break;
case '+':
case CR:
flag = TRUE;
/* FALLTHROUGH */
case 'j':
case K_DARROW:
case CTRL('N'):
case NL:
mtype = MLINE;
if (!onedown(Prenum1))
CLEAROPBEEP;
else if (flag)
beginline(TRUE);
break;
/*
* This is a strange motion command that helps make operators more
* logical. It is actually implemented, but not documented in the
* real 'vi'. This motion command actually refers to "the current
* line". Commands like "dd" and "yy" are really an alternate form of
* "d_" and "y_". It does accept a count, so "d3_" works to delete 3
* lines.
*/
case '_':
lineop:
mtype = MLINE;
if (!onedown((long)(Prenum1 - 1)))
CLEAROPBEEP;
else if (operator != YANK) /* 'Y' does not move cursor */
beginline(TRUE);
break;
case '|':
mtype = MCHAR;
mincl = TRUE;
beginline(FALSE);
if (Prenum > 0)
coladvance((colnr_t)(Prenum - 1));
Curswant = Prenum - 1;
break;
/*
* Word Motions
*/
case 'B':
type = 1;
/* FALLTHROUGH */
case 'b':
case K_SLARROW:
mtype = MCHAR;
mincl = FALSE;
set_want_col = TRUE;
if (bck_word(Prenum1, type))
CLEAROPBEEP;
break;
case 'E':
type = 1;
/* FALLTHROUGH */
case 'e':
mincl = TRUE;
goto dowrdcmd;
case 'W':
type = 1;
/* FALLTHROUGH */
case 'w':
case K_SRARROW:
mincl = FALSE;
flag = TRUE;
/*
* This is a little strange. To match what the real vi does, we
* effectively map 'cw' to 'ce', and 'cW' to 'cE', provided that we are
* not on a space or a TAB. This seems
* impolite at first, but it's really more what we mean when we say
* 'cw'.
*/
if (operator == CHANGE && (n = gcharCurpos()) != ' ' && n != TAB &&
n != NUL)
{
mincl = TRUE;
flag = FALSE;
}
dowrdcmd:
mtype = MCHAR;
set_want_col = TRUE;
if (flag)
n = fwd_word(Prenum1, type);
else
n = end_word(Prenum1, type, operator == CHANGE);
if (n)
{
CLEAROPBEEP;
break;
}
/*
* if we do a 'dw' for the last word in a line, we only delete the rest
* of the line, not joining the two lines.
*/
if (operator == DELETE && Prenum1 == 1 && startop.lnum != Curpos.lnum)
{
Curpos = startop;
while (oneright())
;
mincl = TRUE;
}
break;
case '$':
mtype = MCHAR;
mincl = TRUE;
Curswant = 29999; /* so we stay at the end */
if (!onedown((long)(Prenum1 - 1)))
{
CLEAROPBEEP;
break;
}
if (Quote_block)
updateScreen(NOT_VALID);
break;
case '^':
flag = TRUE;
/* FALLTHROUGH */
case '0':
mtype = MCHAR;
mincl = TRUE;
beginline(flag);
break;
/*
* 4: Searches
*/
case '?':
case '/':
if (!getcmdline(c, (u_char *)searchbuff))
{
CLEAROP;
break;
}
mtype = MCHAR;
mincl = FALSE;
set_want_col = TRUE;
n = dosearch(c == '/' ? FORWARD : BACKWARD, searchbuff, FALSE, Prenum1);
if (n == 0)
CLEAROPBEEP;
else if (n == 2)
mtype = MLINE;
break;
case 'N':
flag = 1;
case 'n':
mtype = MCHAR;
mincl = FALSE;
set_want_col = TRUE;
if (!dosearch(0, NULL, flag, Prenum1))
CLEAROPBEEP;
break;
/*
* Character searches
*/
case 'T':
dir = BACKWARD;
/* FALLTHROUGH */
case 't':
type = 1;
goto docsearch;
case 'F':
dir = BACKWARD;
/* FALLTHROUGH */
case 'f':
docsearch:
mtype = MCHAR;
mincl = TRUE;
set_want_col = TRUE;
if (!searchc(nchar, dir, type, Prenum1))
{
CLEAROPBEEP;
}
break;
case ',':
flag = 1;
/* FALLTHROUGH */
case ';':
dir = flag;
goto docsearch; /* nchar == NUL, thus repeat previous search */
/*
* section or C function searches
*/
case '[':
dir = BACKWARD;
/* FALLTHROUGH */
case ']':
mtype = MLINE;
set_want_col = TRUE;
flag = '{';
if (nchar != c)
{
if (nchar == '[' || nchar == ']')
flag = '}';
else
{
CLEAROPBEEP;
break;
}
}
if (dir == FORWARD && operator != NOP) /* e.g. y]] searches for '}' */
flag = '}';
if (!findpar(dir, Prenum1, flag))
{
CLEAROPBEEP;
}
break;
case '%':
mincl = TRUE;
if (Prenum) /* {cnt}% : goto {cnt} percentage in file */
{
if (Prenum > 100)
CLEAROPBEEP;
else
{
mtype = MLINE;
setpcmark();
Curpos.lnum = line_count * Prenum / 100;
Curpos.col = 0;
}
}
else /* % : go to matching paren */
{
mtype = MCHAR;
if ((pos = showmatch()) == NULL)
CLEAROPBEEP;
else
{
setpcmark();
Curpos = *pos;
set_want_col = TRUE;
}
}
break;
case '(':
dir = BACKWARD;
/* FALLTHROUGH */
case ')':
mtype = MCHAR;
if (c == ')')
mincl = FALSE;
else
mincl = TRUE;
set_want_col = TRUE;
if (!findsent(dir, Prenum1))
CLEAROPBEEP;
break;
case '{':
dir = BACKWARD;
/* FALLTHROUGH */
case '}':
mtype = MCHAR;
mincl = FALSE;
set_want_col = TRUE;
if (!findpar(dir, Prenum1, NUL))
CLEAROPBEEP;
break;
/*
* 5: Edits
*/
case '.':
CHECKCLEAROPQ;
if (!start_redo(Prenum))
CLEAROPBEEP;
break;
case 'u':
if (Quote.lnum)
goto dooperator;
case K_UNDO:
CHECKCLEAROPQ;
u_undo((int)Prenum1);
set_want_col = TRUE;
break;
case CTRL('R'):
CHECKCLEAROPQ;
u_redo((int)Prenum1);
set_want_col = TRUE;
break;
case 'U':
if (Quote.lnum)
goto dooperator;
CHECKCLEAROPQ;
u_undoline();
set_want_col = TRUE;
break;
case 'r':
if (Quote.lnum)
{
c = 'c';
goto dooperator;
}
CHECKCLEAROPQ;
n = strlen(nr2ptr(Curpos.lnum)) - Curpos.col;
if (n < Prenum1) /* not enough characters to replace */
{
CLEAROPBEEP;
break;
}
prep_redo(Prenum1, 'r', NUL, nchar);
stuffnumReadbuff(Prenum1);
stuffReadbuff("R");
stuffReadbuff(mkstr(nchar));
stuffReadbuff("\033");
break;
case 'J':
if (Quote.lnum) /* join the quoted lines */
{
if (Curpos.lnum > Quote.lnum)
{
Prenum = Curpos.lnum - Quote.lnum + 1;
Curpos.lnum = Quote.lnum;
}
else
Prenum = Quote.lnum - Curpos.lnum + 1;
Quote.lnum = 0;
}
CHECKCLEAROP;
if (Prenum <= 1)
Prenum = 2; /* default for join is two lines! */
if (Curpos.lnum + Prenum - 1 > line_count) /* beyond last line */
{
CLEAROPBEEP;
break;
}
prep_redo(Prenum, 'J', NUL, NUL);
dodojoin(Prenum, TRUE, TRUE);
break;
case 'P':
dir = BACKWARD;
/* FALLTHROUGH */
case 'p':
CHECKCLEAROPQ;
prep_redo(Prenum, c, NUL, NUL);
doput(dir, Prenum1);
break;
case CTRL('A'): /* add to number */
case CTRL('S'): /* subtract from number */
CHECKCLEAROPQ;
{
register int col;
char buf[30];
int hex; /* 'x' or 'X': hexadecimal; '0': octal */
static int hexupper = FALSE; /* 0xABC */
ptr = nr2ptr(Curpos.lnum);
col = Curpos.col;
/* first check if we are on a hexadecimal number */
while (col > 0 && isxdigit(ptr[col]))
--col;
if (col > 0 && toupper(ptr[col]) == 'X' && ptr[col - 1] == '0' && isxdigit(ptr[col + 1]))
--col; /* found hexadecimal number */
else
{
/* first search forward and then backward for start of number */
col = Curpos.col;
while (ptr[col] != NUL && !isdigit(ptr[col]))
++col;
while (col > 0 && isdigit(ptr[col - 1]))
--col;
}
if (isdigit(ptr[col]) && u_saveCurpos())
{
set_want_col = TRUE;
prep_redo(Prenum1, c, NUL, NUL);
if (ptr[col] != '0')
hex = 0; /* decimal */
else
{
hex = toupper(ptr[col + 1]); /* assume hexadecimal */
if (hex != 'X' || !isxdigit(ptr[col + 2]))
{
if (isdigit(hex))
hex = '0'; /* octal */
else
hex = 0; /* 0 by itself is decimal */
}
}
if (!hex && col > 0 && ptr[col - 1] == '-')
--col;
ptr += col;
if (hex == '0')
sscanf(ptr, "%lo", &n);
else if (hex)
sscanf(ptr, "%lx", &n); /* "%X" doesn't work! */
else
n = atol(ptr);
if (c == CTRL('A'))
n += Prenum1;
else
n -= Prenum1;
if (hex == 'X') /* skip the '0x' */
col += 2;
Curpos.col = col;
do /* delete the old number */
{
if (isalpha(c))
{
if (isupper(c))
hexupper = TRUE;
else
hexupper = FALSE;
}
delchar(FALSE);
c = gcharCurpos();
}
while (hex ? (hex == '0' ? c >= '0' && c <= '7' : isxdigit(c)) : isdigit(c));
if (hex == '0')
sprintf(buf, "0%lo", n);
else if (hexupper)
sprintf(buf, "%lX", n);
else if (hex)
sprintf(buf, "%lx", n);
else
sprintf(buf, "%ld", n);
insstr(buf); /* insert the new number */
--Curpos.col;
updateline();
}
else
beep();
}
break;
/*
* 6: Inserts
*/
case 'A':
set_want_col = TRUE;
while (oneright())
;
/* FALLTHROUGH */
case 'a':
CHECKCLEAROPQ;
/* Works just like an 'i'nsert on the next character. */
if (u_saveCurpos())
{
if (!lineempty(Curpos.lnum))
incCurpos();
startinsert(c, FALSE, Prenum1);
command_busy = TRUE;
}
break;
case 'I':
beginline(TRUE);
/* FALLTHROUGH */
case 'i':
CHECKCLEAROPQ;
if (u_saveCurpos())
{
startinsert(c, FALSE, Prenum1);
command_busy = TRUE;
}
break;
case 'o':
if (Quote.lnum) /* switch start and end of quote */
{
Prenum = Quote.lnum;
Quote.lnum = Curpos.lnum;
Curpos.lnum = Prenum;
n = Quote.col;
Quote.col = Curpos.col;
Curpos.col = n;
break;
}
CHECKCLEAROP;
if (u_save(Curpos.lnum, (linenr_t)(Curpos.lnum + 1)) && Opencmd(FORWARD, TRUE))
{
startinsert('o', TRUE, Prenum1);
command_busy = TRUE;
}
break;
case 'O':
CHECKCLEAROPQ;
if (u_save((linenr_t)(Curpos.lnum - 1), Curpos.lnum) && Opencmd(BACKWARD, TRUE))
{
startinsert('O', TRUE, Prenum1);
command_busy = TRUE;
}
break;
case 'R':
if (Quote.lnum)
{
c = 'c';
Quote.col = QUOTELINE;
goto dooperator;
}
CHECKCLEAROPQ;
if (u_saveCurpos())
{
startinsert('R', FALSE, Prenum1);
command_busy = TRUE;
}
break;
/*
* 7: Operators
*/
case '~': /* swap case */
/*
* if tilde is not an operator and Quoting is off: swap case
* of a single character
*/
if (!p_to && !Quote.lnum)
{
CHECKCLEAROPQ;
if (lineempty(Curpos.lnum))
{
CLEAROPBEEP;
break;
}
prep_redo(Prenum, '~', NUL, NUL);
if (!u_saveCurpos())
break;
for (; Prenum1 > 0; --Prenum1)
{
if (gcharCurpos() == NUL)
break;
swapchar(&Curpos);
incCurpos();
}
set_want_col = TRUE;
CHANGED;
updateline();
break;
}
/*FALLTHROUGH*/
case 'd':
case 'c':
case 'y':
case '>':
case '<':
case '!':
case '=':
case 'V':
dooperator:
n = strchr(opchars, c) - opchars + 1;
if (n == operator) /* double operator works on lines */
goto lineop;
CHECKCLEAROP;
if (Prenum != 0)
opnum = Prenum;
startop = Curpos;
operator = n;
break;
/*
* 8: Abbreviations
*/
/* when quoting the next commands are operators */
case 'S':
case 'Y':
case 'D':
case 'C':
case 'x':
case 'X':
case 's':
if (Quote.lnum)
{
static char trans[] = "ScYyDdCcxdXdsc";
if (isupper(c)) /* uppercase means linewise */
Quote.col = QUOTELINE;
c = *(strchr(trans, c) + 1);
goto dooperator;
}
case '&':
CHECKCLEAROPQ;
if (Prenum)
stuffnumReadbuff(Prenum);
if (c == 'S')
{
beginline((int)p_ai);
substituting = TRUE;
}
else if (c == 'Y' && p_ye)
c = 'Z';
{
static char *(ar[9]) = {"dl", "dh", "d$", "c$", "cl", "c$", "yy", "y$", ":s\r"};
static char *str = "xXDCsSYZ&";
stuffReadbuff(ar[strchr(str, c) - str]);
}
break;
/*
* 9: Marks
*/
case 'm':
CHECKCLEAROP;
if (!setmark(nchar))
CLEAROPBEEP;
break;
case '\'':
flag = TRUE;
/* FALLTHROUGH */
case '`':
pos = getmark(nchar, (operator == NOP));
if (pos == (FPOS *)-1) /* jumped to other file */
{
if (flag)
beginline(TRUE);
break;
}
if (pos != NULL)
setpcmark();
cursormark:
if (pos == NULL)
CLEAROPBEEP;
else
{
Curpos = *pos;
if (flag)
beginline(TRUE);
}
mtype = flag ? MLINE : MCHAR;
mincl = FALSE; /* ignored if not MCHAR */
set_want_col = TRUE;
break;
case CTRL('O'): /* goto older pcmark */
Prenum1 = -Prenum1;
/* FALLTHROUGH */
case CTRL('I'): /* goto newer pcmark */
CHECKCLEAROPQ;
pos = movemark((int)Prenum1);
if (pos == (FPOS *)-1) /* jump to other file */
{
set_want_col = TRUE;
break;
}
goto cursormark;
/*
* 10. Buffer setting
*/
case '"':
CHECKCLEAROP;
if (isalnum(nchar) || nchar == '.')
{
yankbuffer = nchar;
opnum = Prenum; /* remember count before '"' */
}
else
CLEAROPBEEP;
break;
/*
* 11. Quoting
*/
case 'q':
case 'Q':
case CTRL('Q'):
CHECKCLEAROP;
Quote_block = FALSE;
if (Quote.lnum) /* stop quoting */
{
Quote.lnum = 0;
updateScreen(NOT_VALID); /* delete the inversion */
}
else /* start quoting */
{
Quote = Curpos;
if (c == 'Q') /* linewise */
Quote.col = QUOTELINE;
else if (c == CTRL('Q')) /* blockwise */
Quote_block = TRUE;
updateline(); /* start the inversion */
}
break;
/*
* 12. Suspend
*/
case CTRL('Z'):
CLEAROP;
Quote.lnum = 0; /* stop quoting */
stuffReadbuff(":st!\r"); /* no autowrite */
break;
/*
* The end
*/
case ESC:
if (Quote.lnum)
{
Quote.lnum = 0; /* stop quoting */
updateScreen(NOT_VALID);
}
default: /* not a known command */
CLEAROPBEEP;
break;
} /* end of switch on command character */
/*
* if we didn't start or finish an operator, reset yankbuffer, unless we
* need it later.
*/
if (!finish_op && !operator && strchr("\"DCYSsXx", c) == NULL)
yankbuffer = 0;
/*
* If an operation is pending, handle it...
*/
if ((Quote.lnum || finish_op) && operator != NOP)
{
if (operator != YANK && !Quote.lnum) /* can't redo yank */
{
prep_redo(Prenum, opchars[operator - 1], c, nchar);
if (c == '/' || c == '?') /* was a search */
{
AppendToRedobuff(searchbuff);
AppendToRedobuff(NL_STR);
}
}
if (redo_Quote_busy)
{
startop = Curpos;
Curpos.lnum += redo_Quote_nlines - 1;
switch (redo_Quote_type)
{
case 'Q': Quote.col = QUOTELINE;
break;
case CTRL('Q'):
Quote_block = TRUE;
break;
case 'q':
if (redo_Quote_nlines <= 1)
Curpos.col += redo_Quote_col;
else
Curpos.col = redo_Quote_col;
break;
}
if (redo_Quote_col == 29999)
{
Curswant = 29999;
coladvance(29999);
}
}
else if (Quote.lnum)
startop = Quote;
if (lt(startop, Curpos))
{
endop = Curpos;
Curpos = startop;
}
else
{
endop = startop;
startop = Curpos;
}
nlines = endop.lnum - startop.lnum + 1;
if (Quote.lnum || redo_Quote_busy)
{
if (Quote_block) /* block mode */
{
startvcol = getvcol(&startop, 2);
n = getvcol(&endop, 2);
if (n < startvcol)
startvcol = n;
/* if '$' was used, get endvcol from longest line */
if (Curswant == 29999)
{
Curpos.col = 29999;
endvcol = 0;
for (Curpos.lnum = startop.lnum; Curpos.lnum <= endop.lnum; ++Curpos.lnum)
if ((n = getvcol(&Curpos, 3)) > endvcol)
endvcol = n;
Curpos = startop;
}
else if (redo_Quote_busy)
endvcol = startvcol + redo_Quote_col;
else
{
endvcol = getvcol(&startop, 3);
n = getvcol(&endop, 3);
if (n > endvcol)
endvcol = n;
}
coladvance(startvcol);
}
/*
* prepare to redo quoting: this is based on the size
* of the quoted text
*/
if (operator != YANK) /* can't redo yank */
{
prep_redo(0L, 'q', opchars[operator - 1], NUL);
if (Quote_block)
redo_Quote_type = CTRL('Q');
else if (Quote.col == QUOTELINE)
redo_Quote_type = 'Q';
else
redo_Quote_type = 'q';
if (Curswant == 29999)
redo_Quote_col = 29999;
else if (Quote_block)
redo_Quote_col = endvcol - startvcol;
else if (nlines > 1)
redo_Quote_col = endop.col;
else
redo_Quote_col = endop.col - startop.col;
redo_Quote_nlines = nlines;
}
mincl = TRUE;
if (Quote.col == QUOTELINE)
mtype = MLINE;
else
mtype = MCHAR;
redo_Quote_busy = FALSE;
/*
* Switch quoting off now, so screen updating does
* not show inverted text when the screen is redrawn.
* With YANK and sometimes with COLON there is no screen redraw, so
* it is done here to remove the inverted part.
*/
Quote.lnum = 0;
if (operator == YANK || operator == COLON)
updateScreen(NOT_VALID);
}
set_want_col = 1;
if (!mincl && !equal(startop, endop))
oneless = 1;
else
oneless = 0;
switch (operator)
{
case LSHIFT:
case RSHIFT:
adjust_lnum();
doshift(operator);
break;
case DELETE:
dodelete();
break;
case YANK:
doyank(FALSE);
break;
case CHANGE:
dochange();
break;
case FILTER:
AppendToRedobuff("!\n"); /* strange but necessary */
case INDENT:
case COLON:
adjust_lnum();
sprintf(IObuff, ":%ld,%ld", (long)startop.lnum, (long)endop.lnum);
stuffReadbuff(IObuff);
if (operator != COLON)
stuffReadbuff("!");
if (operator == INDENT)
{
stuffReadbuff(p_ep);
stuffReadbuff("\n");
}
/* docmdline() does the rest */
break;
case TILDE:
case UPPER:
case LOWER:
dotilde();
break;
case FORMAT:
adjust_lnum();
doformat();
break;
default:
CLEAROPBEEP;
}
operator = NOP;
Quote_block = FALSE;
yankbuffer = 0;
}
normal_end:
premsg(-1, NUL);
if (restart_edit && operator == NOP && Quote.lnum == 0 && !command_busy && stuff_empty() && yankbuffer == 0)
startinsert(NUL, FALSE, 1L);
}
