/*
* This function deletes "n" bytes, starting at dot. It understands how do deal
* with end of lines, etc. It returns TRUE if all of the characters were
* deleted, and FALSE if they were not (because dot ran into the end of the
* buffer. The "kflag" is TRUE if the text should be put in the kill buffer.
*
* long n; # of chars to delete
* int kflag; put killed text in kill buffer flag
*/
int ldelete(long n, int kflag)
{
char *cp1;
char *cp2;
struct line *dotp;
int doto;
int chunk;
struct window *wp;
if (curbp->b_mode & MDVIEW) /* don't allow this command if */
return rdonly(); /* we are in read only mode */
while (n != 0) {
dotp = curwp->w_dotp;
doto = curwp->w_doto;
if (dotp == curbp->b_linep) /* Hit end of buffer. */
return FALSE;
chunk = dotp->l_used - doto; /* Size of chunk. */
if (chunk > n)
chunk = n;
if (chunk == 0) { /* End of line, merge. */
#if SCROLLCODE
lchange(WFHARD | WFKILLS);
#else
lchange(WFHARD);
#endif
if (ldelnewline() == FALSE
|| (kflag != FALSE && kinsert('\n') == FALSE))
return FALSE;
--n;
continue;
}
lchange(WFEDIT);
cp1 = &dotp->l_text[doto]; /* Scrunch text. */
cp2 = cp1 + chunk;
if (kflag != FALSE) { /* Kill? */
while (cp1 != cp2) {
if (kinsert(*cp1) == FALSE)
return FALSE;
++cp1;
}
cp1 = &dotp->l_text[doto];
}
while (cp2 != &dotp->l_text[dotp->l_used])
*cp1++ = *cp2++;
dotp->l_used -= chunk;
wp = wheadp; /* Fix windows */
while (wp != NULL) {
if (wp->w_dotp == dotp && wp->w_doto >= doto) {
wp->w_doto -= chunk;
if (wp->w_doto < doto)
wp->w_doto = doto;
}
if (wp->w_markp == dotp && wp->w_marko >= doto) {
wp->w_marko -= chunk;
if (wp->w_marko < doto)
wp->w_marko = doto;
}
wp = wp->w_wndp;
}
n -= chunk;
}
return TRUE;
}
/*
* This function deletes "n" bytes, starting at dot. It understands how do
* deal with end of lines, etc. It returns TRUE if all of the characters were
* deleted, and FALSE if they were not (because dot ran into the end of the
* buffer. The "kflag" is TRUE if the text should be put in the kill buffer.
*/
int ldelete (int n, int kflag)
{
LINE *dotp;
WINDOW *wp;
char *cp1, *cp2;
int doto, chunk;
while (n != 0)
{
dotp = curwp->w_dotp;
doto = curwp->w_doto;
if (dotp == curbp->b_linep) /* Hit end of buffer */
return (FALSE);
chunk = dotp->l_used - doto; /* Size of chunk */
if (chunk > n)
chunk = n;
if (chunk == 0)
{ /* End of line, merge */
lchange (WFHARD);
if (ldelnewline () == FALSE
|| (kflag != FALSE && kinsert ('\n') == FALSE))
return (FALSE);
--n;
continue;
}
lchange (WFEDIT);
cp1 = &dotp->l_text[doto]; /* Scrunch text */
cp2 = cp1 + chunk;
if (kflag != FALSE)
{ /* Kill? */
while (cp1 != cp2)
{
if (kinsert (*cp1) == FALSE)
return (FALSE);
++cp1;
}
cp1 = &dotp->l_text[doto];
}
while (cp2 != &dotp->l_text[dotp->l_used])
*cp1++ = *cp2++;
dotp->l_used -= chunk;
wp = wheadp; /* Fix windows */
while (wp != NULL)
{
if (wp->w_dotp == dotp && wp->w_doto >= doto)
{
wp->w_doto -= chunk;
if (wp->w_doto < doto)
wp->w_doto = doto;
}
if (wp->w_markp == dotp && wp->w_marko >= doto)
{
wp->w_marko -= chunk;
if (wp->w_marko < doto)
wp->w_marko = doto;
}
wp = wp->w_wndp;
}
n -= chunk;
}
return (TRUE);
}
int
insertfile(char *fname, char *newname, int replacebuf)
{
struct buffer *bp;
struct line *lp1, *lp2;
struct line *olp; /* line we started at */
struct mgwin *wp;
int nbytes, s, nline = 0, siz, x, x2;
int opos; /* offset we started at */
int oline; /* original line number */
char *dp;
if (replacebuf == TRUE)
x = undo_enable(FFRAND, 0);
else
x = undo_enabled();
lp1 = NULL;
if (line == NULL) {
line = malloc(NLINE);
if (line == NULL)
panic("out of memory");
linesize = NLINE;
}
/* cheap */
bp = curbp;
if (newname != NULL) {
(void)strlcpy(bp->b_fname, newname, sizeof(bp->b_fname));
dp = xdirname(newname);
(void)strlcpy(bp->b_cwd, dp, sizeof(bp->b_cwd));
(void)strlcat(bp->b_cwd, "/", sizeof(bp->b_cwd));
free(dp);
}
/* hard file open */
if ((s = ffropen(fname, (replacebuf == TRUE) ? bp : NULL)) == FIOERR)
goto out;
if (s == FIOFNF) {
/* file not found */
if (newname != NULL)
ewprintf("(New file)");
else
ewprintf("(File not found)");
goto out;
} else if (s == FIODIR) {
/* file was a directory */
if (replacebuf == FALSE) {
ewprintf("Cannot insert: file is a directory, %s",
fname);
goto cleanup;
}
killbuffer(bp);
if ((bp = dired_(fname)) == NULL)
return (FALSE);
undo_enable(FFRAND, x);
curbp = bp;
return (showbuffer(bp, curwp, WFFULL | WFMODE));
} else {
dp = xdirname(fname);
(void)strlcpy(bp->b_cwd, dp, sizeof(bp->b_cwd));
(void)strlcat(bp->b_cwd, "/", sizeof(bp->b_cwd));
free(dp);
}
opos = curwp->w_doto;
oline = curwp->w_dotline;
/*
* Open a new line at dot and start inserting after it.
* We will delete this newline after insertion.
* Disable undo, as we create the undo record manually.
*/
x2 = undo_enable(FFRAND, 0);
(void)lnewline();
olp = lback(curwp->w_dotp);
undo_enable(FFRAND, x2);
nline = 0;
siz = 0;
while ((s = ffgetline(line, linesize, &nbytes)) != FIOERR) {
retry:
siz += nbytes + 1;
switch (s) {
case FIOSUC:
/* FALLTHRU */
case FIOEOF:
++nline;
if ((lp1 = lalloc(nbytes)) == NULL) {
/* keep message on the display */
s = FIOERR;
undo_add_insert(olp, opos,
siz - nbytes - 1 - 1);
goto endoffile;
}
bcopy(line, <ext(lp1)[0], nbytes);
lp2 = lback(curwp->w_dotp);
lp2->l_fp = lp1;
lp1->l_fp = curwp->w_dotp;
lp1->l_bp = lp2;
curwp->w_dotp->l_bp = lp1;
if (s == FIOEOF) {
undo_add_insert(olp, opos, siz - 1);
goto endoffile;
}
break;
case FIOLONG: {
/* a line too long to fit in our buffer */
char *cp;
int newsize;
newsize = linesize * 2;
if (newsize < 0 ||
(cp = malloc(newsize)) == NULL) {
ewprintf("Could not allocate %d bytes",
newsize);
s = FIOERR;
goto endoffile;
}
bcopy(line, cp, linesize);
free(line);
line = cp;
s = ffgetline(line + linesize, linesize,
&nbytes);
nbytes += linesize;
linesize = newsize;
if (s == FIOERR)
goto endoffile;
goto retry;
}
default:
ewprintf("Unknown code %d reading file", s);
s = FIOERR;
break;
}
}
endoffile:
/* ignore errors */
ffclose(NULL);
/* don't zap an error */
if (s == FIOEOF) {
if (nline == 1)
ewprintf("(Read 1 line)");
else
ewprintf("(Read %d lines)", nline);
}
/* set mark at the end of the text */
curwp->w_dotp = curwp->w_markp = lback(curwp->w_dotp);
curwp->w_marko = llength(curwp->w_markp);
curwp->w_markline = oline + nline + 1;
/*
* if we are at the end of the file, ldelnewline is a no-op,
* but we still need to decrement the line and markline counts
* as we've accounted for this fencepost in our arithmetic
*/
if (lforw(curwp->w_dotp) == curwp->w_bufp->b_headp) {
curwp->w_bufp->b_lines--;
curwp->w_markline--;
} else
(void)ldelnewline();
curwp->w_dotp = olp;
curwp->w_doto = opos;
curwp->w_dotline = oline;
if (olp == curbp->b_headp)
curwp->w_dotp = lforw(olp);
if (newname != NULL)
bp->b_flag |= BFCHG | BFBAK; /* Need a backup. */
else
bp->b_flag |= BFCHG;
/*
* If the insert was at the end of buffer, set lp1 to the end of
* buffer line, and lp2 to the beginning of the newly inserted text.
* (Otherwise lp2 is set to NULL.) This is used below to set
* pointers in other windows correctly if they are also at the end of
* buffer.
*/
lp1 = bp->b_headp;
if (curwp->w_markp == lp1) {
lp2 = curwp->w_dotp;
} else {
/* delete extraneous newline */
(void)ldelnewline();
out: lp2 = NULL;
}
for (wp = wheadp; wp != NULL; wp = wp->w_wndp) {
if (wp->w_bufp == curbp) {
wp->w_flag |= WFMODE | WFEDIT;
if (wp != curwp && lp2 != NULL) {
if (wp->w_dotp == lp1)
wp->w_dotp = lp2;
if (wp->w_markp == lp1)
wp->w_markp = lp2;
if (wp->w_linep == lp1)
wp->w_linep = lp2;
}
}
}
bp->b_lines += nline;
cleanup:
undo_enable(FFRAND, x);
/* return FALSE if error */
return (s != FIOERR);
}
/*
* This function deletes "n" characters, starting at dot. It understands how do deal
* with end of lines, etc. It returns TRUE if all of the characters were
* deleted, and FALSE if they were not (because dot ran into the end of the
* buffer. The "preserve" function is used to save what was deleted.
*/
int
ldelete(long n, int (*preserve)(UCS))
{
register CELL *cp1;
register CELL *cp2;
register LINE *dotp;
register int doto;
register int chunk;
register WINDOW *wp;
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
while (n != 0) {
dotp = curwp->w_dotp;
doto = curwp->w_doto;
if (dotp == curbp->b_linep) /* Hit end of buffer. */
return (FALSE);
chunk = dotp->l_used-doto; /* Size of chunk. */
if (chunk > n)
chunk = n;
if (chunk == 0) { /* End of line, merge. */
lchange(WFHARD);
if (ldelnewline() == FALSE
|| (preserve ? (*preserve)('\n') == FALSE : 0))
return (FALSE);
--n;
continue;
}
lchange(WFEDIT);
cp1 = &dotp->l_text[doto]; /* Scrunch text. */
cp2 = cp1 + chunk;
if (preserve) { /* Kill? */
while (cp1 != cp2) {
if ((*preserve)(cp1->c) == FALSE)
return (FALSE);
++cp1;
}
cp1 = &dotp->l_text[doto];
}
while (cp2 != &dotp->l_text[dotp->l_used])
*cp1++ = *cp2++;
dotp->l_used -= chunk;
wp = wheadp; /* Fix windows */
while (wp != NULL) {
if (wp->w_dotp==dotp && wp->w_doto>=doto) {
wp->w_doto -= chunk;
if (wp->w_doto < doto)
wp->w_doto = doto;
}
if (wp->w_markp==dotp && wp->w_marko>=doto) {
wp->w_marko -= chunk;
if (wp->w_marko < doto)
wp->w_marko = doto;
}
if (wp->w_imarkp==dotp && wp->w_imarko>=doto) {
wp->w_imarko -= chunk;
if (wp->w_imarko < doto)
wp->w_imarko = doto;
}
wp = wp->w_wndp;
}
n -= chunk;
}
#ifdef _WINDOWS
if (preserve == kinsert && ksize() > 0)
mswin_killbuftoclip (kremove);
#endif
return (TRUE);
}
