void
shift(int c, int cnt)
{
register int *addr;
char *cp = genbuf;
char *dp;
register int i;
if (!inglobal)
save12(), undkind = UNDCHANGE;
cnt *= value(SHIFTWIDTH);
for (addr = addr1; addr <= addr2; addr++) {
ex_getline(*addr);
i = whitecnt(linebuf);
switch (c) {
case '>':
if (linebuf[0] == 0)
continue;
cp = genindent(i + cnt);
break;
case '<':
if (i == 0)
continue;
i -= cnt;
cp = i > 0 ? genindent(i) : genbuf;
break;
}
dot = addr;
if (cp + strlen(dp = vpastwh(linebuf)) >= &genbuf[LBSIZE - 2])
error("Line too long|Result line after shift would be too long");
strcpy(cp, dp);
strcLIN(genbuf);
putmark(addr);
}
}
void
rop2(void)
{
size_t first, last, a;
deletenone();
clrstats();
first = addr2 - fendcore + 1;
bsize = LBSIZE; /* Don't remove! -CK- */
ignore(append(getfile, addr2));
last = dot - fendcore;
/*
* if the modeline variable is set,
* check the first and last five lines of the file
* for a mode line.
*/
if (value(MODELINE)) {
for (a=first; a<=last; a++) {
if (a==first+5 && last-first > 10)
a = last - 4;
ex_getline(*(fendcore + a));
checkmodeline(linebuf);
}
}
}
/* ARGSUSED */
void
putfile(int isfilter)
{
line *a1;
register char *fp, *lp;
register int nib;
#ifndef CRYPT
(void)isfilter;
#endif
a1 = addr1;
clrstats();
cntln = addr2 - a1 + 1;
if (cntln == 0)
return;
bsize = LBSIZE;
nib = bsize;
fp = genbuf;
do {
ex_getline(*a1++);
lp = linebuf;
for (;;) {
if (--nib < 0) {
nib = fp - genbuf;
#ifdef CRYPT
if(kflag && !isfilter)
crblock(perm, genbuf, nib, cntch);
#endif
if (write(io, genbuf, nib) != nib) {
wrerror();
}
cntch += nib;
nib = bsize - 1;
fp = genbuf;
}
if ((*fp++ = *lp++) == 0) {
fp[-1] = '\n';
break;
}
}
} while (a1 <= addr2);
nib = fp - genbuf;
#ifdef CRYPT
if(kflag && !isfilter)
crblock(perm, genbuf, nib, cntch);
#endif
if (write(io, genbuf, nib) != nib) {
wrerror();
}
cntch += nib;
}
int
execute(int gf, line *addr)
{
register char *p1, *p2;
register int c;
if (gf) {
if (circfl)
return (0);
locs = p1 = loc2;
} else {
if (addr == zero)
return (0);
p1 = linebuf;
ex_getline(*addr);
locs = 0;
}
p2 = expbuf;
if (circfl) {
loc1 = p1;
return (advance(p1, p2));
}
/* fast check for first character */
if (*p2 == CCHR) {
c = p2[1];
do {
if (c != *p1 && (!value(IGNORECASE) ||
!((islower(c) && toupper(c) == *p1) || (islower((int)*p1) && toupper((int)*p1) == c))))
continue;
if (advance(p1, p2)) {
loc1 = p1;
return (1);
}
} while (*p1++);
return (0);
}
/* regular algorithm */
do {
if (advance(p1, p2)) {
loc1 = p1;
return (1);
}
} while (*p1++);
return (0);
}
/*
* filter_ldisplay --
* Display output from a utility.
*
* !!!
* Historically, the characters were passed unmodified to the terminal.
* We use the ex print routines to make sure they're printable.
*/
static int
filter_ldisplay(SCR *sp, FILE *fp)
{
size_t len;
size_t wlen;
CHAR_T *wp;
EX_PRIVATE *exp;
for (exp = EXP(sp); !ex_getline(sp, fp, &len) && !INTERRUPTED(sp);) {
FILE2INT5(sp, exp->ibcw, exp->ibp, len, wp, wlen);
if (ex_ldisplay(sp, wp, wlen, 0, 0))
break;
}
if (ferror(fp))
msgq(sp, M_SYSERR, "filter read");
(void)fclose(fp);
return (0);
}
/*
* ex_readfp --
* Read lines into the file.
*
* PUBLIC: int ex_readfp __P((SCR *, char *, FILE *, MARK *, db_recno_t *, int));
*/
int
ex_readfp(SCR *sp, char *name, FILE *fp, MARK *fm, db_recno_t *nlinesp, int silent)
{
EX_PRIVATE *exp;
GS *gp;
db_recno_t lcnt, lno;
size_t len;
u_long ccnt; /* XXX: can't print off_t portably. */
int nf, rval;
char *p;
size_t wlen;
CHAR_T *wp;
gp = sp->gp;
exp = EXP(sp);
/*
* Add in the lines from the output. Insertion starts at the line
* following the address.
*/
ccnt = 0;
lcnt = 0;
p = "147|Reading...";
for (lno = fm->lno; !ex_getline(sp, fp, &len); ++lno, ++lcnt) {
if ((lcnt + 1) % INTERRUPT_CHECK == 0) {
if (INTERRUPTED(sp))
break;
if (!silent) {
gp->scr_busy(sp, p,
p == NULL ? BUSY_UPDATE : BUSY_ON);
p = NULL;
}
}
FILE2INT5(sp, exp->ibcw, exp->ibp, len, wp, wlen);
if (db_append(sp, 1, lno, wp, wlen))
goto err;
ccnt += len;
}
if (ferror(fp) || fclose(fp))
goto err;
/* Return the number of lines read in. */
if (nlinesp != NULL)
*nlinesp = lcnt;
if (!silent) {
p = msg_print(sp, name, &nf);
msgq(sp, M_INFO,
"148|%s: %lu lines, %lu characters", p, lcnt, ccnt);
if (nf)
FREE_SPACE(sp, p, 0);
}
rval = 0;
if (0) {
err: msgq_str(sp, M_SYSERR, name, "%s");
(void)fclose(fp);
rval = 1;
}
if (!silent)
gp->scr_busy(sp, NULL, BUSY_OFF);
return (rval);
}
void
operate(int c, int cnt)
{
register int i;
void (*moveop)(), (*deleteop)();
void (*opf)();
bool subop = 0;
char *oglobp, *ocurs;
register line *addr;
static char lastFKND, lastFCHR;
char d;
moveop = vmove, deleteop = vdelete;
wcursor = cursor;
wdot = NOLINE;
notecnt = 0;
dir = 1;
switch (c) {
/*
* d delete operator.
*/
case 'd':
moveop = vdelete;
deleteop = beep;
break;
/*
* s substitute characters, like c\040, i.e. change space.
*/
case 's':
ungetkey(' ');
subop++;
/* fall into ... */
/*
* c Change operator.
*/
case 'c':
if ((c == 'c' && workcmd[0] == 'C') || workcmd[0] == 'S')
subop++;
moveop = vchange;
deleteop = beep;
break;
/*
* ! Filter through a UNIX command.
*/
case '!':
moveop = vfilter;
deleteop = beep;
break;
/*
* y Yank operator. Place specified text so that it
* can be put back with p/P. Also yanks to named buffers.
*/
case 'y':
moveop = vyankit;
deleteop = beep;
break;
/*
* = Reformat operator (for LISP).
*/
#ifdef LISP
case '=':
forbid(!value(LISP));
/* fall into ... */
#endif
/*
* > Right shift operator.
* < Left shift operator.
*/
case '<':
case '>':
moveop = vshftop;
deleteop = beep;
break;
/*
* r Replace character under cursor with single following
* character.
*/
case 'r':
vrep(cnt);
return;
default:
goto nocount;
}
/*
* Had an operator, so accept another count.
* Multiply counts together.
*/
if (isdigit(peekkey()) && peekkey() != '0') {
cnt *= vgetcnt();
Xcnt = cnt;
forbid (cnt <= 0);
}
/*
* Get next character, mapping it and saving as
* part of command for repeat.
*/
c = map(getesc());
if (c == 0)
return;
if (!subop)
*lastcp++ = c;
nocount:
opf = moveop;
switch (c) {
/*
* b Back up a word.
* B Back up a word, liberal definition.
*/
case 'b':
case 'B':
dir = -1;
/* fall into ... */
/*
* w Forward a word.
* W Forward a word, liberal definition.
*/
case 'W':
case 'w':
wdkind = c & ' ';
if (edge()) {
forbid (opf == vmove);
wcursor = dir == -1 ? linebuf : strend(linebuf);
} else
while (cnt > 0 && !edge())
word(opf, cnt), cnt--;
vmoving = 0;
break;
/*
* E to end of following blank/nonblank word
*/
case 'E':
wdkind = 0;
goto ein;
/*
* e To end of following word.
*/
case 'e':
wdkind = 1;
ein:
if (edge()) {
forbid(opf == vmove);
wcursor = dir == -1 ? linebuf : strend(linebuf);
} else {
while (cnt > 1 && !edge()) {
word(opf, cnt);
cnt--;
}
eend(opf, cnt);
}
vmoving = 0;
break;
/*
* ( Back an s-expression.
*/
case '(':
dir = -1;
/* fall into... */
/*
* ) Forward an s-expression.
*/
case ')':
forbid(lfind(0, cnt, opf, (line *) 0) < 0);
if (wdot)
markpr(wdot);
break;
/*
* { Back an s-expression, but don't stop on atoms.
* In text mode, a paragraph. For C, a balanced set
* of {}'s.
*/
case '{':
dir = -1;
/* fall into... */
/*
* } Forward an s-expression, but don't stop on atoms.
* In text mode, back paragraph. For C, back a balanced
* set of {}'s.
*/
case '}':
forbid(lfind(1, cnt, opf, (line *) 0) < 0);
if (wdot)
markpr(wdot);
break;
/*
* % To matching () or {}. If not at ( or { scan for
* first such after cursor on this line.
*/
case '%':
vsave();
i = lmatchp((line *) 0);
getDOT();
forbid(!i);
if (opf != vmove)
if (dir > 0)
wcursor++;
else
cursor++;
else
if (wdot)
markpr(wdot);
break;
/*
* [ Back to beginning of defun, i.e. an ( in column 1.
* For text, back to a section macro.
* For C, back to a { in column 1 (~~ beg of function.)
*/
case '[':
dir = -1;
/* fall into ... */
/*
* ] Forward to next defun, i.e. a ( in column 1.
* For text, forward section.
* For C, forward to a } in column 1 (if delete or such)
* or if a move to a { in column 1.
*/
case ']':
if (!vglobp)
forbid(getkey() != c);
if (Xhadcnt)
vsetsiz(Xcnt);
vsave();
i = lbrack(c, opf);
getDOT();
forbid(!i);
if (wdot)
markpr(wdot);
if (ex_ospeed > B300)
hold |= HOLDWIG;
break;
/*
* , Invert last find with f F t or T, like inverse
* of ;.
*/
case ',':
forbid (lastFKND == 0);
c = isupper((int)lastFKND) ? tolower((int)lastFKND) : toupper((int)lastFKND);
ungetkey(lastFCHR);
if (vglobp == 0)
vglobp = "";
subop++;
goto nocount;
/*
* 0 To beginning of real line.
*/
case '0':
wcursor = linebuf;
vmoving = 0;
break;
/*
* ; Repeat last find with f F t or T.
*/
case ';':
forbid (lastFKND == 0);
c = lastFKND;
ungetkey(lastFCHR);
subop++;
goto nocount;
/*
* F Find single character before cursor in current line.
* T Like F, but stops before character.
*/
case 'F': /* inverted find */
case 'T':
dir = -1;
/* fall into ... */
/*
* f Find single character following cursor in current line.
* t Like f, but stope before character.
*/
case 'f': /* find */
case 't':
i = getesc();
if (i == 0)
return;
if (!subop)
*lastcp++ = i;
if (vglobp == 0)
lastFKND = c, lastFCHR = i;
for (; cnt > 0; cnt--)
forbid (find(i) == 0);
switch (c) {
case 'T':
wcursor++;
break;
case 't':
wcursor--;
case 'f':
fixup:
if (moveop != vmove)
wcursor++;
break;
}
vmoving = 0;
break;
/*
* | Find specified print column in current line.
*/
case '|':
if (Pline == numbline)
cnt += 8;
vmovcol = cnt;
vmoving = 1;
wcursor = vfindcol(cnt);
break;
/*
* ^ To beginning of non-white space on line.
*/
case '^':
wcursor = vskipwh(linebuf);
vmoving = 0;
break;
/*
* $ To end of line.
*/
case '$':
if (cnt > 1) {
if (opf == vmove) {
wcursor = 0;
vmoving = 1;
vmovcol = 20000;
cnt--;
} else
wcursor = linebuf;
wdot = dot + cnt;
break;
}
if (linebuf[0]) {
wcursor = strend(linebuf) - 1;
goto fixup;
}
wcursor = linebuf;
vmoving = 0;
break;
/*
* h Back a character.
* ^H Back a character.
*/
case 'h':
case CTRL('h'):
dir = -1;
/* fall into ... */
/*
* space Forward a character.
*/
case ' ':
forbid (margin() || (opf == vmove && edge()));
while (cnt > 0 && !margin())
wcursor += dir, cnt--;
if ((margin() && opf == vmove) || wcursor < linebuf)
wcursor -= dir;
vmoving = 0;
break;
/*
* D Delete to end of line, short for d$.
*/
case 'D':
cnt = INF;
goto deleteit;
/*
* X Delete character before cursor.
*/
case 'X':
dir = -1;
/* fall into ... */
deleteit:
/*
* x Delete character at cursor, leaving cursor where it is.
*/
case 'x':
if (margin())
goto errlab;
while (cnt > 0 && !margin())
wcursor += dir, cnt--;
opf = deleteop;
vmoving = 0;
break;
default:
/*
* Stuttered operators are equivalent to the operator on
* a line, thus turn dd into d_.
*/
if (opf == vmove || c != workcmd[0]) {
errlab:
beep();
return;
}
/* fall into ... */
/*
* _ Target for a line or group of lines.
* Stuttering is more convenient; this is mostly
* for aesthetics.
*/
case '_':
wdot = dot + cnt - 1;
vmoving = 0;
wcursor = 0;
break;
/*
* H To first, home line on screen.
* Count is for count'th line rather than first.
*/
case 'H':
wdot = (dot - vcline) + cnt - 1;
if (opf == vmove)
markit(wdot);
vmoving = 0;
wcursor = 0;
break;
/*
* - Backwards lines, to first non-white character.
*/
case '-':
wdot = dot - cnt;
vmoving = 0;
wcursor = 0;
break;
/*
* ^P To previous line same column. Ridiculous on the
* console of the VAX since it puts console in LSI mode.
*/
case CTRL('p'):
wdot = dot - cnt;
if (vmoving == 0)
vmoving = 1, vmovcol = column(cursor);
wcursor = 0;
break;
/*
* L To last line on screen, or count'th line from the
* bottom.
*/
case 'L':
wdot = dot + vcnt - vcline - cnt;
if (opf == vmove)
markit(wdot);
vmoving = 0;
wcursor = 0;
break;
/*
* M To the middle of the screen.
*/
case 'M':
wdot = dot + ((vcnt + 1) / 2) - vcline - 1;
if (opf == vmove)
markit(wdot);
vmoving = 0;
wcursor = 0;
break;
/*
* + Forward line, to first non-white.
*
* CR Convenient synonym for +.
*/
case '+':
case CR:
wdot = dot + cnt;
vmoving = 0;
wcursor = 0;
break;
/*
* ^N To next line, same column if possible.
*
* LF Linefeed is a convenient synonym for ^N.
*/
case CTRL('n'):
case NL:
wdot = dot + cnt;
if (vmoving == 0)
vmoving = 1, vmovcol = column(cursor);
wcursor = 0;
break;
/*
* n Search to next match of current pattern.
*/
case 'n':
vglobp = vscandir;
c = *vglobp++;
goto nocount;
/*
* N Like n but in reverse direction.
*/
case 'N':
vglobp = vscandir[0] == '/' ? "?" : "/";
c = *vglobp++;
goto nocount;
/*
* ' Return to line specified by following mark,
* first white position on line.
*
* ` Return to marked line at remembered column.
*/
case '\'':
case '`':
d = c;
c = getesc();
if (c == 0)
return;
c = markreg(c);
forbid (c == 0);
wdot = getmark(c);
forbid (wdot == NOLINE);
if (Xhadcnt)
vsetsiz(Xcnt);
if (opf == vmove)
markit(wdot);
vmoving = 0;
wcursor = d == '`' ? ncols[c - 'a'] : 0;
if (wcursor) {
vsave();
ex_getline(*wdot);
if (wcursor > strend(linebuf))
wcursor = 0;
getDOT();
}
if (ex_ospeed > B300)
hold |= HOLDWIG;
break;
/*
* G Goto count'th line, or last line if no count
* given.
*/
case 'G':
if (!Xhadcnt)
cnt = lineDOL();
wdot = zero + cnt;
forbid (wdot < one || wdot > dol);
if (opf == vmove)
markit(wdot);
vmoving = 0;
wcursor = 0;
break;
/*
* / Scan forward for following re.
* ? Scan backward for following re.
*/
case '/':
case '?':
if (Xhadcnt)
vsetsiz(Xcnt);
vsave();
ocurs = cursor;
wcursor = 0;
if (readecho(c))
return;
if (!vglobp)
vscandir[0] = genbuf[0];
oglobp = globp; CP(vutmp, genbuf); globp = vutmp;
d = peekc; ungetchar(0); fixech();
CATCH
#ifdef V6
/*
* Lose typeahead (ick).
*/
vcook();
#endif
addr = address();
#ifdef V6
vraw();
#endif
ONERR
#ifdef V6
vraw();
#endif
globp = oglobp;
ungetchar(d);
splitw = 0;
vclean();
vjumpto(dot, ocurs, 0);
return;
ENDCATCH
if (globp == 0)
globp = "";
else if (peekc)
--globp;
ungetchar(d);
c = 0;
if (*globp == 'z')
globp++, c = '\n';
if (any(*globp, "^+-."))
c = *globp++;
i = 0;
while (isdigit((int)*globp))
i = i * 10 + *globp++ - '0';
if (*globp)
c = *globp++;
globp = oglobp;
splitw = 0;
vmoving = 0;
if (i != 0)
vsetsiz(i);
if (opf == vmove) {
if (state == ONEOPEN || state == HARDOPEN)
outline = destline = WBOT;
markit(addr);
if (loc1 > linebuf && *loc1 == 0)
loc1--;
if (c)
vjumpto(addr, loc1, c);
else {
vmoving = 0;
if (loc1) {
vmoving++;
vmovcol = column(loc1);
}
getDOT();
if (state == CRTOPEN && addr != dot)
vup1();
vupdown(addr - dot, NOSTR);
}
return;
}
lastcp[-1] = 'n';
getDOT();
wdot = addr;
break;
}
/*
* Apply.
*/
if (vreg && wdot == 0)
wdot = dot;
(*opf)(c);
wdot = NOLINE;
}
static void
zop2(int lines, int op)
{
register int *split;
split = NIL;
switch(op) {
case EOF:
if (addr2 == dol)
error("\nAt EOF");
case '+':
if (addr2 == dol)
error("At EOF");
addr2 += lines * zweight;
if (addr2 > dol)
error("Hit BOTTOM");
addr2++;
default:
addr1 = addr2;
addr2 += lines-1;
dot = addr2;
break;
case '=':
case '.':
lines--;
lines >>= 1;
if (op == '=')
lines--;
addr1 = addr2-lines;
if (op == '=')
dot = split = addr2;
addr2 += lines;
if (op == '.') {
markDOT();
dot = addr2;
}
break;
case '^':
case '-':
addr2 -= lines * zweight;
if (addr2 < one)
error("Hit TOP");
lines--;
addr1 = addr2 - lines;
dot = addr2;
break;
}
if (addr1 <= zero)
addr1 = one;
if (addr2 > dol)
addr2 = dol;
if (dot > dol)
dot = dol;
if (addr1 > addr2)
return;
if (addr2 - addr1 > 1 /* && really wanna do this */)
pstart();
if (op == EOF && zhadpr) {
ex_getline(*addr1);
ex_putchar('\r' | QUOTE);
shudclob = 1;
} else if (znoclear == 0 && CLEAR)
ex_putchar('\032' | QUOTE);
if (split) {
plines(addr1, split - 1, 0);
splitit();
plines(split, split, 0);
splitit();
addr1 = split + 1;
}
plines(addr1, addr2, 0);
}
/*
* Main loop for command mode command decoding.
* A few commands are executed here, but main function
* is to strip command addresses, do a little address oriented
* processing and call command routines to do the real work.
*/
void
commands(bool noprompt, bool exitoneof)
{
register line *addr;
register int c;
register int lchng;
int given;
int seensemi;
int cnt;
bool hadpr;
resetflav();
nochng();
for (;;) {
/*
* If dot at last command
* ended up at zero, advance to one if there is a such.
*/
if (dot <= zero) {
dot = zero;
if (dol > zero)
dot = one;
}
shudclob = 0;
/*
* If autoprint or trailing print flags,
* print the line at the specified offset
* before the next command.
*/
if (pflag ||
(lchng != chng && value(AUTOPRINT) && !inglobal && !inopen && endline)) {
pflag = 0;
nochng();
if (dol != zero) {
addr1 = addr2 = dot + poffset;
if (addr1 < one || addr1 > dol)
error("Offset out-of-bounds|Offset after command too large");
setdot1();
goto print;
}
}
nochng();
/*
* Print prompt if appropriate.
* If not in global flush output first to prevent
* going into pfast mode unreasonably.
*/
if (inglobal == 0) {
flush();
if (!hush && value(PROMPT) && !globp && !noprompt && endline) {
ex_putchar(':');
hadpr = 1;
}
TSYNC();
}
/*
* Gobble up the address.
* Degenerate addresses yield ".".
*/
addr2 = 0;
given = seensemi = 0;
do {
addr1 = addr2;
addr = address(0);
c = getcd();
if (addr == 0) {
if (c == ',')
addr = dot;
else if (addr1 != 0) {
addr2 = dot;
break;
} else
break;
}
addr2 = addr;
given++;
if (c == ';') {
c = ',';
dot = addr;
seensemi = 1;
}
} while (c == ',');
if (c == '%') {
/* %: same as 1,$ */
addr1 = one;
addr2 = dol;
given = 2;
c = ex_getchar();
}
if (addr1 == 0)
addr1 = addr2;
if (c == ':')
c = ex_getchar();
/*
* Set command name for special character commands.
*/
tailspec(c);
/*
* If called via : escape from open or visual, limit
* the set of available commands here to save work below.
*/
if (inopen) {
if (c=='\n' || c=='\r' || c==CTRL('d') || c==EOF) {
if (addr2)
dot = addr2;
if (c == EOF)
return;
continue;
}
if (any(c, "o"))
notinvis:
tailprim(Command, 1, 1);
}
switch (c) {
case 'a':
switch(peekchar()) {
case 'b':
/* abbreviate */
tail("abbreviate");
setnoaddr();
mapcmd(0, 1);
anyabbrs = 1;
continue;
case 'r':
/* args */
tail("args");
setnoaddr();
eol();
pargs();
continue;
}
/* append */
if (inopen)
goto notinvis;
tail("append");
setdot();
aiflag = exclam();
ex_newline();
vmacchng(0);
deletenone();
setin(addr2);
inappend = 1;
ignore(append(gettty, addr2));
inappend = 0;
nochng();
continue;
case 'c':
switch (peekchar()) {
/* copy */
case 'o':
tail("copy");
vmacchng(0);
move();
continue;
#ifdef CHDIR
/* cd */
case 'd':
tail("cd");
goto changdir;
/* chdir */
case 'h':
ignchar();
if (peekchar() == 'd') {
register char *p;
tail2of("chdir");
changdir:
if (savedfile[0] == '/' || !value(WARN))
ignore(exclam());
else
ignore(quickly());
if (skipend()) {
p = getenv("HOME");
if (p == NULL)
error("Home directory unknown");
} else
getone(), p = file;
eol();
if (chdir(p) < 0)
filioerr(p);
if (savedfile[0] != '/')
edited = 0;
continue;
}
if (inopen)
tailprim("change", 2, 1);
tail2of("change");
break;
#endif
default:
if (inopen)
goto notinvis;
tail("change");
break;
}
/* change */
aiflag = exclam();
setCNL();
vmacchng(0);
setin(addr1);
delete(0);
inappend = 1;
ignore(append(gettty, addr1 - 1));
inappend = 0;
nochng();
continue;
/* delete */
case 'd':
/*
* Caution: dp and dl have special meaning already.
*/
tail("delete");
c = cmdreg();
setCNL();
vmacchng(0);
if (c)
YANKreg(c);
delete(0);
appendnone();
continue;
/* edit */
/* ex */
case 'e':
tail(peekchar() == 'x' ? "ex" : "edit");
editcmd:
if (!exclam() && chng)
c = 'E';
filename(c);
if (c == 'E') {
ungetchar(lastchar());
ignore(quickly());
}
setnoaddr();
doecmd:
init();
addr2 = zero;
laste++;
ex_sync();
rop(c);
nochng();
continue;
/* file */
case 'f':
tail("file");
setnoaddr();
filename(c);
noonl();
/*
synctmp();
*/
continue;
/* global */
case 'g':
tail("global");
global(!exclam());
nochng();
continue;
/* insert */
case 'i':
if (inopen)
goto notinvis;
tail("insert");
setdot();
nonzero();
aiflag = exclam();
ex_newline();
vmacchng(0);
deletenone();
setin(addr2);
inappend = 1;
ignore(append(gettty, addr2 - 1));
inappend = 0;
if (dot == zero && dol > zero)
dot = one;
nochng();
continue;
/* join */
case 'j':
tail("join");
c = exclam();
setcount();
nonzero();
ex_newline();
vmacchng(0);
if (given < 2 && addr2 != dol)
addr2++;
join(c);
continue;
/* k */
case 'k':
casek:
pastwh();
c = ex_getchar();
if (endcmd(c))
serror("Mark what?|%s requires following letter", Command);
ex_newline();
if (!islower(c))
error("Bad mark|Mark must specify a letter");
setdot();
nonzero();
names[c - 'a'] = *addr2 &~ 01;
anymarks = 1;
continue;
/* list */
case 'l':
tail("list");
setCNL();
ignorf(setlist(1));
pflag = 0;
goto print;
case 'm':
if (peekchar() == 'a') {
ignchar();
if (peekchar() == 'p') {
/* map */
tail2of("map");
setnoaddr();
mapcmd(0, 0);
continue;
}
/* mark */
tail2of("mark");
goto casek;
}
/* move */
tail("move");
vmacchng(0);
move();
continue;
case 'n':
if (peekchar() == 'u') {
tail("number");
goto numberit;
}
/* next */
tail("next");
setnoaddr();
ckaw();
ignore(quickly());
if (getargs())
makargs();
next();
c = 'e';
filename(c);
goto doecmd;
/* open */
case 'o':
tail("open");
oop();
pflag = 0;
nochng();
continue;
case 'p':
case 'P':
switch (peekchar()) {
/* put */
case 'u':
tail("put");
setdot();
c = cmdreg();
eol();
vmacchng(0);
if (c)
putreg(c);
else
put();
continue;
case 'r':
ignchar();
if (peekchar() == 'e') {
/* preserve */
tail2of("preserve");
eol();
if (preserve() == 0)
error("Preserve failed!");
else
error("File preserved.");
}
tail2of("print");
break;
default:
tail("print");
break;
}
/* print */
setCNL();
pflag = 0;
print:
nonzero();
if (CL && span() > EX_LINES) {
flush1();
vclear();
}
plines(addr1, addr2, 1);
continue;
/* quit */
case 'q':
tail("quit");
setnoaddr();
c = quickly();
eol();
if (!c)
quit:
nomore();
if (inopen) {
vgoto(WECHO, 0);
if (!ateopr())
vnfl();
else {
tostop();
}
flush();
setty(normf);
}
cleanup(1);
ex_exit(0);
case 'r':
if (peekchar() == 'e') {
ignchar();
switch (peekchar()) {
/* rewind */
case 'w':
tail2of("rewind");
setnoaddr();
if (!exclam()) {
ckaw();
if (chng && dol > zero)
error("No write@since last chage (:rewind! overrides)");
}
eol();
erewind();
next();
c = 'e';
ungetchar(lastchar());
filename(c);
goto doecmd;
/* recover */
case 'c':
tail2of("recover");
setnoaddr();
c = 'e';
if (!exclam() && chng)
c = 'E';
filename(c);
if (c == 'E') {
ungetchar(lastchar());
ignore(quickly());
}
init();
addr2 = zero;
laste++;
ex_sync();
recover();
rop2();
revocer();
if (status == 0)
rop3(c);
if (dol != zero)
change();
nochng();
continue;
}
tail2of("read");
} else
tail("read");
/* read */
if (savedfile[0] == 0 && dol == zero)
c = 'e';
pastwh();
vmacchng(0);
if (peekchar() == '!') {
setdot();
ignchar();
unix0(0);
filter(0);
continue;
}
filename(c);
rop(c);
nochng();
if (inopen && endline && addr1 > zero && addr1 < dol)
dot = addr1 + 1;
continue;
case 's':
switch (peekchar()) {
/*
* Caution: 2nd char cannot be c, g, or r
* because these have meaning to substitute.
*/
/* set */
case 'e':
tail("set");
setnoaddr();
set();
continue;
/* shell */
case 'h':
tail("shell");
setNAEOL();
vnfl();
putpad(TE);
flush();
unixwt(1, unixex("-i", (char *) 0, 0, 0));
vcontin(0);
continue;
/* source */
case 'o':
#ifdef notdef
if (inopen)
goto notinvis;
#endif
tail("source");
setnoaddr();
getone();
eol();
source(file, 0);
continue;
#ifdef SIGTSTP
/* stop, suspend */
case 't':
tail("stop");
goto suspend;
case 'u':
tail("suspend");
suspend:
if (!dosusp)
error("Old tty driver|Not using new tty driver/shell");
c = exclam();
eol();
if (!c)
ckaw();
onsusp(0);
continue;
#endif
}
/* fall into ... */
/* & */
/* ~ */
/* substitute */
case '&':
case '~':
Command = "substitute";
if (c == 's')
tail(Command);
vmacchng(0);
if (!substitute(c))
pflag = 0;
continue;
/* t */
case 't':
if (peekchar() == 'a') {
tail("tag");
tagfind(exclam());
if (!inopen)
lchng = chng - 1;
else
nochng();
continue;
}
tail("t");
vmacchng(0);
move();
continue;
case 'u':
if (peekchar() == 'n') {
ignchar();
switch(peekchar()) {
/* unmap */
case 'm':
tail2of("unmap");
setnoaddr();
mapcmd(1, 0);
continue;
/* unabbreviate */
case 'a':
tail2of("unabbreviate");
setnoaddr();
mapcmd(1, 1);
anyabbrs = 1;
continue;
}
/* undo */
tail2of("undo");
} else
tail("undo");
setnoaddr();
markDOT();
c = exclam();
ex_newline();
undo(c);
continue;
case 'v':
switch (peekchar()) {
case 'e':
/* version */
tail("version");
setNAEOL();
ex_printf("@(#) Version 3.6, 11/3/80"
" (4.0BSD). git "
"160803 14:24"
+5);
noonl();
continue;
/* visual */
case 'i':
tail("visual");
if (inopen) {
c = 'e';
goto editcmd;
}
vop();
pflag = 0;
nochng();
continue;
}
/* v */
tail("v");
global(0);
nochng();
continue;
/* write */
case 'w':
c = peekchar();
tail(c == 'q' ? "wq" : "write");
wq:
if (skipwh() && peekchar() == '!') {
pofix();
ignchar();
setall();
unix0(0);
filter(1);
} else {
setall();
wop(1);
nochng();
}
if (c == 'q')
goto quit;
continue;
/* xit */
case 'x':
tail("xit");
if (!chng)
goto quit;
c = 'q';
goto wq;
/* yank */
case 'y':
tail("yank");
c = cmdreg();
setcount();
eol();
vmacchng(0);
if (c)
YANKreg(c);
else
yank();
continue;
/* z */
case 'z':
zop(0);
pflag = 0;
continue;
/* * */
/* @ */
case '*':
case '@':
c = ex_getchar();
if (c=='\n' || c=='\r')
ungetchar(c);
if (any(c, "@*\n\r"))
c = lastmac;
if (isupper(c))
c = tolower(c);
if (!islower(c))
error("Bad register");
ex_newline();
setdot();
cmdmac(c);
continue;
/* | */
case '|':
endline = 0;
goto caseline;
/* \n */
case '\n':
endline = 1;
caseline:
notempty();
if (addr2 == 0) {
if (UP != NOSTR && c == '\n' && !inglobal)
c = CTRL('k');
if (inglobal)
addr1 = addr2 = dot;
else {
if (dot == dol)
error("At EOF|At end-of-file");
addr1 = addr2 = dot + 1;
}
}
setdot();
nonzero();
if (seensemi)
addr1 = addr2;
ex_getline(*addr1);
if (c == CTRL('k')) {
flush1();
destline--;
if (hadpr)
shudclob = 1;
}
plines(addr1, addr2, 1);
continue;
/* " */
case '"':
comment();
continue;
/* # */
case '#':
numberit:
setCNL();
ignorf(setnumb(1));
pflag = 0;
goto print;
/* = */
case '=':
ex_newline();
setall();
if (inglobal == 2)
pofix();
ex_printf("%d", lineno(addr2));
noonl();
continue;
/* ! */
case '!':
if (addr2 != 0) {
vmacchng(0);
unix0(0);
setdot();
filter(2);
} else {
unix0(1);
pofix();
putpad(TE);
flush();
unixwt(1, unixex("-c", uxb, 0, 0));
vclrech(1); /* vcontin(0); */
nochng();
}
continue;
/* < */
/* > */
case '<':
case '>':
for (cnt = 1; peekchar() == c; cnt++)
ignchar();
setCNL();
vmacchng(0);
shift(c, cnt);
continue;
/* ^D */
/* EOF */
case CTRL('d'):
case EOF:
if (exitoneof) {
if (addr2 != 0)
dot = addr2;
return;
}
if (!isatty(0)) {
if (intty)
/*
* Chtty sys call at UCB may cause a
* input which was a tty to suddenly be
* turned into /dev/null.
*/
onhup(0);
return;
}
if (addr2 != 0) {
setlastchar('\n');
putnl();
}
if (dol == zero) {
if (addr2 == 0)
putnl();
notempty();
}
ungetchar(EOF);
zop(hadpr);
continue;
default:
if (!isalpha(c))
break;
ungetchar(c);
tailprim("", 0, 0);
}
ierror("What?|Unknown command character '%c'", c);
}
}