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uemacs/random.c

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/* RANDOM.C
*
* This file contains the command processing functions for a number of random
* commands. There is no functional grouping here, for sure.
*
* modified by Petri Kutvonen
*/
#include <stdio.h>
#include "estruct.h"
#include "edef.h"
int tabsize; /* Tab size (0: use real tabs) */
/*
* Set fill column to n.
*/
setfillcol(f, n)
{
fillcol = n;
mlwrite("(Fill column is %d)",n);
return(TRUE);
}
/*
* Display the current position of the cursor, in origin 1 X-Y coordinates,
* the character that is under the cursor (in hex), and the fraction of the
* text that is before the cursor. The displayed column is not the current
* column, but the column that would be used on an infinite width display.
* Normally this is bound to "C-X =".
*/
showcpos(f, n)
{
register LINE *lp; /* current line */
register long numchars; /* # of chars in file */
register int numlines; /* # of lines in file */
register long predchars; /* # chars preceding point */
register int predlines; /* # lines preceding point */
register int curchar; /* character under cursor */
int ratio;
int col;
int savepos; /* temp save for current offset */
int ecol; /* column pos/end of current line */
#if PKCODE
struct {
int pk_clin;
int pk_tlin;
int pk_ccol;
int pk_tcol;
long pk_cchr;
long pk_tchr;
int pk_perc;
int pk_char;
} pk_mlrec;
#endif
/* starting at the beginning of the buffer */
lp = lforw(curbp->b_linep);
/* start counting chars and lines */
numchars = 0;
numlines = 0;
while (lp != curbp->b_linep) {
/* if we are on the current line, record it */
if (lp == curwp->w_dotp) {
predlines = numlines;
predchars = numchars + curwp->w_doto;
if ((curwp->w_doto) == llength(lp))
curchar = '\n';
else
curchar = lgetc(lp, curwp->w_doto);
}
/* on to the next line */
++numlines;
numchars += llength(lp) + 1;
lp = lforw(lp);
}
/* if at end of file, record it */
if (curwp->w_dotp == curbp->b_linep) {
predlines = numlines;
predchars = numchars;
#if PKCODE
curchar = 0;
#endif
}
/* Get real column and end-of-line column. */
col = getccol(FALSE);
savepos = curwp->w_doto;
curwp->w_doto = llength(curwp->w_dotp);
ecol = getccol(FALSE);
curwp->w_doto = savepos;
ratio = 0; /* Ratio before dot. */
if (numchars != 0)
ratio = (100L*predchars) / numchars;
/* summarize and report the info */
#if PKCODE
pk_mlrec.pk_clin = predlines+1;
pk_mlrec.pk_tlin = numlines+1;
pk_mlrec.pk_ccol = col;
pk_mlrec.pk_tcol = ecol;
pk_mlrec.pk_cchr = predchars;
pk_mlrec.pk_tchr = numchars;
pk_mlrec.pk_perc = ratio;
pk_mlrec.pk_char = curchar;
mlwrite("%*Line %d/%d Col %d/%d Char %D/%D (%d%%) char = 0x%x",
&pk_mlrec);
#else
mlwrite("Line %d/%d Col %d/%d Char %D/%D (%d%%) char = 0x%x",
predlines+1, numlines+1, col, ecol,
predchars, numchars, ratio, curchar);
#endif
return (TRUE);
}
getcline() /* get the current line number */
{
register LINE *lp; /* current line */
register int numlines; /* # of lines before point */
/* starting at the beginning of the buffer */
lp = lforw(curbp->b_linep);
/* start counting lines */
numlines = 0;
while (lp != curbp->b_linep) {
/* if we are on the current line, record it */
if (lp == curwp->w_dotp)
break;
++numlines;
lp = lforw(lp);
}
/* and return the resulting count */
return(numlines + 1);
}
/*
* Return current column. Stop at first non-blank given TRUE argument.
*/
getccol(bflg)
int bflg;
{
register int c, i, col;
col = 0;
for (i=0; i<curwp->w_doto; ++i) {
c = lgetc(curwp->w_dotp, i);
if (c!=' ' && c!='\t' && bflg)
break;
if (c == '\t')
col |= tabmask;
else if (c<0x20 || c==0x7F)
++col;
++col;
}
return(col);
}
/*
* Set current column.
*/
setccol(pos)
int pos; /* position to set cursor */
{
register int c; /* character being scanned */
register int i; /* index into current line */
register int col; /* current cursor column */
register int llen; /* length of line in bytes */
col = 0;
llen = llength(curwp->w_dotp);
/* scan the line until we are at or past the target column */
for (i = 0; i < llen; ++i) {
/* upon reaching the target, drop out */
if (col >= pos)
break;
/* advance one character */
c = lgetc(curwp->w_dotp, i);
if (c == '\t')
col |= tabmask;
else if (c<0x20 || c==0x7F)
++col;
++col;
}
/* set us at the new position */
curwp->w_doto = i;
/* and tell weather we made it */
return(col >= pos);
}
/*
* Twiddle the two characters on either side of dot. If dot is at the end of
* the line twiddle the two characters before it. Return with an error if dot
* is at the beginning of line; it seems to be a bit pointless to make this
* work. This fixes up a very common typo with a single stroke. Normally bound
* to "C-T". This always works within a line, so "WFEDIT" is good enough.
*/
twiddle(f, n)
{
register LINE *dotp;
register int doto;
register int cl;
register int cr;
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
dotp = curwp->w_dotp;
doto = curwp->w_doto;
if (doto==llength(dotp) && --doto<0)
return (FALSE);
cr = lgetc(dotp, doto);
if (--doto < 0)
return (FALSE);
cl = lgetc(dotp, doto);
lputc(dotp, doto+0, cr);
lputc(dotp, doto+1, cl);
lchange(WFEDIT);
return (TRUE);
}
/*
* Quote the next character, and insert it into the buffer. All the characters
* are taken literally, with the exception of the newline, which always has
* its line splitting meaning. The character is always read, even if it is
* inserted 0 times, for regularity. Bound to "C-Q"
*/
quote(f, n)
{
register int s;
register int c;
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
c = tgetc();
if (n < 0)
return (FALSE);
if (n == 0)
return (TRUE);
if (c == '\n') {
do {
s = lnewline();
} while (s==TRUE && --n);
return (s);
}
return (linsert(n, c));
}
/*
* Set tab size if given non-default argument (n <> 1). Otherwise, insert a
* tab into file. If given argument, n, of zero, change to true tabs.
* If n > 1, simulate tab stop every n-characters using spaces. This has to be
* done in this slightly funny way because the tab (in ASCII) has been turned
* into "C-I" (in 10 bit code) already. Bound to "C-I".
*/
tab(f, n)
{
if (n < 0)
return (FALSE);
if (n == 0 || n > 1) {
tabsize = n;
return(TRUE);
}
if (! tabsize)
return(linsert(1, '\t'));
return(linsert(tabsize - (getccol(FALSE) % tabsize), ' '));
}
#if AEDIT
detab(f, n) /* change tabs to spaces */
int f,n; /* default flag and numeric repeat count */
{
register int inc; /* increment to next line [sgn(n)] */
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
if (f == FALSE)
n = 1;
/* loop thru detabbing n lines */
inc = ((n > 0) ? 1 : -1);
while (n) {
curwp->w_doto = 0; /* start at the beginning */
/* detab the entire current line */
while (curwp->w_doto < llength(curwp->w_dotp)) {
/* if we have a tab */
if (lgetc(curwp->w_dotp, curwp->w_doto) == '\t') {
ldelete(1L, FALSE);
insspace(TRUE, (tabmask+1) - (curwp->w_doto & tabmask));
}
forwchar(FALSE, 1);
}
/* advance/or back to the next line */
forwline(TRUE, inc);
n -= inc;
}
curwp->w_doto = 0; /* to the begining of the line */
thisflag &= ~CFCPCN; /* flag that this resets the goal column */
lchange(WFEDIT); /* yes, we have made at least an edit */
return(TRUE);
}
entab(f, n) /* change spaces to tabs where posible */
int f,n; /* default flag and numeric repeat count */
{
register int inc; /* increment to next line [sgn(n)] */
register int fspace; /* pointer to first space if in a run */
register int ccol; /* current cursor column */
register char cchar; /* current character */
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
if (f == FALSE)
n = 1;
/* loop thru entabbing n lines */
inc = ((n > 0) ? 1 : -1);
while (n) {
curwp->w_doto = 0; /* start at the beginning */
/* entab the entire current line */
fspace = -1;
ccol = 0;
while (curwp->w_doto < llength(curwp->w_dotp)) {
/* see if it is time to compress */
if ((fspace >= 0) && (nextab(fspace) <= ccol))
if (ccol - fspace < 2)
fspace = -1;
else {
/* there is a bug here dealing with mixed space/tabed
lines.......it will get fixed */
backchar(TRUE, ccol - fspace);
ldelete((long)(ccol - fspace), FALSE);
linsert(1, '\t');
fspace = -1;
}
/* get the current character */
cchar = lgetc(curwp->w_dotp, curwp->w_doto);
switch (cchar) {
case '\t': /* a tab...count em up */
ccol = nextab(ccol);
break;
case ' ': /* a space...compress? */
if (fspace == -1)
fspace = ccol;
ccol++;
break;
default: /* any other char...just count */
ccol++;
fspace = -1;
break;
}
forwchar(FALSE, 1);
}
/* advance/or back to the next line */
forwline(TRUE, inc);
n -= inc;
}
curwp->w_doto = 0; /* to the begining of the line */
thisflag &= ~CFCPCN; /* flag that this resets the goal column */
lchange(WFEDIT); /* yes, we have made at least an edit */
return(TRUE);
}
trim(f, n) /* trim trailing whitespace from the point to eol */
int f,n; /* default flag and numeric repeat count */
{
register LINE *lp; /* current line pointer */
register int offset; /* original line offset position */
register int length; /* current length */
register int inc; /* increment to next line [sgn(n)] */
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
if (f == FALSE)
n = 1;
/* loop thru trimming n lines */
inc = ((n > 0) ? 1 : -1);
while (n) {
lp = curwp->w_dotp; /* find current line text */
offset = curwp->w_doto; /* save original offset */
length = lp->l_used; /* find current length */
/* trim the current line */
while (length > offset) {
if (lgetc(lp, length-1) != ' ' &&
lgetc(lp, length-1) != '\t')
break;
length--;
}
lp->l_used = length;
/* advance/or back to the next line */
forwline(TRUE, inc);
n -= inc;
}
lchange(WFEDIT);
thisflag &= ~CFCPCN; /* flag that this resets the goal column */
return(TRUE);
}
#endif
/*
* Open up some blank space. The basic plan is to insert a bunch of newlines,
* and then back up over them. Everything is done by the subcommand
* procerssors. They even handle the looping. Normally this is bound to "C-O".
*/
openline(f, n)
{
register int i;
register int s;
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
if (n < 0)
return (FALSE);
if (n == 0)
return (TRUE);
i = n; /* Insert newlines. */
do {
s = lnewline();
} while (s==TRUE && --i);
if (s == TRUE) /* Then back up overtop */
s = backchar(f, n); /* of them all. */
return (s);
}
/*
* Insert a newline. Bound to "C-M". If we are in CMODE, do automatic
* indentation as specified.
*/
newline(f, n)
{
register int s;
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
if (n < 0)
return (FALSE);
/* if we are in C mode and this is a default <NL> */
if (n == 1 && (curbp->b_mode & MDCMOD) &&
curwp->w_dotp != curbp->b_linep)
return(cinsert());
/*
* If a newline was typed, fill column is defined, the argument is non-
* negative, wrap mode is enabled, and we are now past fill column,
* and we are not read-only, perform word wrap.
*/
if ((curwp->w_bufp->b_mode & MDWRAP) && fillcol > 0 &&
getccol(FALSE) > fillcol &&
(curwp->w_bufp->b_mode & MDVIEW) == FALSE)
execute(META|SPEC|'W', FALSE, 1);
/* insert some lines */
while (n--) {
if ((s=lnewline()) != TRUE)
return (s);
#if SCROLLCODE
curwp->w_flag |= WFINS;
#endif
}
return (TRUE);
}
cinsert() /* insert a newline and indentation for C */
{
register char *cptr; /* string pointer into text to copy */
register int tptr; /* index to scan into line */
register int bracef; /* was there a brace at the end of line? */
register int i;
char ichar[NSTRING]; /* buffer to hold indent of last line */
/* grab a pointer to text to copy indentation from */
cptr = &curwp->w_dotp->l_text[0];
/* check for a brace */
tptr = curwp->w_doto - 1;
bracef = (cptr[tptr] == '{');
/* save the indent of the previous line */
i = 0;
while ((i < tptr) && (cptr[i] == ' ' || cptr[i] == '\t')
&& (i < NSTRING - 1)) {
ichar[i] = cptr[i];
++i;
}
ichar[i] = 0; /* terminate it */
/* put in the newline */
if (lnewline() == FALSE)
return(FALSE);
/* and the saved indentation */
linstr(ichar);
/* and one more tab for a brace */
if (bracef)
tab(FALSE, 1);
#if SCROLLCODE
curwp->w_flag |= WFINS;
#endif
return(TRUE);
}
#if NBRACE
insbrace(n, c) /* insert a brace into the text here...we are in CMODE */
int n; /* repeat count */
int c; /* brace to insert (always } for now) */
{
register int ch; /* last character before input */
register int oc; /* caractere oppose a c */
register int i, count;
register int target; /* column brace should go after */
register LINE *oldlp;
register int oldoff;
/* if we aren't at the beginning of the line... */
if (curwp->w_doto != 0)
/* scan to see if all space before this is white space */
for (i = curwp->w_doto - 1; i >= 0; --i) {
ch = lgetc(curwp->w_dotp, i);
if (ch != ' ' && ch != '\t')
return(linsert(n, c));
}
/* chercher le caractere oppose correspondant */
switch (c) {
case '}': oc = '{'; break;
case ']': oc = '['; break;
case ')': oc = '('; break;
default: return(FALSE);
}
oldlp = curwp->w_dotp;
oldoff = curwp->w_doto;
count = 1; backchar(FALSE, 1);
while (count > 0) {
if (curwp->w_doto == llength(curwp->w_dotp))
ch = '\n';
else
ch = lgetc(curwp->w_dotp, curwp->w_doto);
if (ch == c) ++count;
if (ch == oc) --count;
backchar(FALSE, 1);
if (boundry(curwp->w_dotp, curwp->w_doto, REVERSE))
break;
}
if (count != 0) { /* no match */
curwp->w_dotp = oldlp;
curwp->w_doto = oldoff;
return(linsert(n, c));
}
curwp->w_doto = 0; /* debut de ligne */
/* aller au debut de la ligne apres la tabulation */
while ((ch = lgetc(curwp->w_dotp, curwp->w_doto)) == ' ' || ch == '\t')
forwchar(FALSE, 1);
/* delete back first */
target = getccol(FALSE); /* c'est l'indent que l'on doit avoir */
curwp->w_dotp = oldlp;
curwp->w_doto = oldoff;
while (target != getccol(FALSE)) {
if (target < getccol(FALSE)) /* on doit detruire des caracteres */
while (getccol(FALSE) > target)
backdel(FALSE, 1);
else { /* on doit en inserer */
while (target - getccol(FALSE) >= 8)
linsert(1,'\t');
linsert(target - getccol(FALSE), ' ');
}
}
/* and insert the required brace(s) */
return(linsert(n, c));
}
#else
insbrace(n, c) /* insert a brace into the text here...we are in CMODE */
int n; /* repeat count */
int c; /* brace to insert (always { for now) */
{
register int ch; /* last character before input */
register int i;
register int target; /* column brace should go after */
/* if we are at the beginning of the line, no go */
if (curwp->w_doto == 0)
return(linsert(n,c));
/* scan to see if all space before this is white space */
for (i = curwp->w_doto - 1; i >= 0; --i) {
ch = lgetc(curwp->w_dotp, i);
if (ch != ' ' && ch != '\t')
return(linsert(n, c));
}
/* delete back first */
target = getccol(FALSE); /* calc where we will delete to */
target -= 1;
target -= target % (tabsize == 0 ? 8 : tabsize);
while (getccol(FALSE) > target)
backdel(FALSE, 1);
/* and insert the required brace(s) */
return(linsert(n, c));
}
#endif
inspound() /* insert a # into the text here...we are in CMODE */
{
register int ch; /* last character before input */
register int i;
/* if we are at the beginning of the line, no go */
if (curwp->w_doto == 0)
return(linsert(1,'#'));
/* scan to see if all space before this is white space */
for (i = curwp->w_doto - 1; i >= 0; --i) {
ch = lgetc(curwp->w_dotp, i);
if (ch != ' ' && ch != '\t')
return(linsert(1, '#'));
}
/* delete back first */
while (getccol(FALSE) >= 1)
backdel(FALSE, 1);
/* and insert the required pound */
return(linsert(1, '#'));
}
/*
* Delete blank lines around dot. What this command does depends if dot is
* sitting on a blank line. If dot is sitting on a blank line, this command
* deletes all the blank lines above and below the current line. If it is
* sitting on a non blank line then it deletes all of the blank lines after
* the line. Normally this command is bound to "C-X C-O". Any argument is
* ignored.
*/
deblank(f, n)
{
register LINE *lp1;
register LINE *lp2;
long nld;
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
lp1 = curwp->w_dotp;
while (llength(lp1)==0 && (lp2=lback(lp1))!=curbp->b_linep)
lp1 = lp2;
lp2 = lp1;
nld = 0;
while ((lp2=lforw(lp2))!=curbp->b_linep && llength(lp2)==0)
++nld;
if (nld == 0)
return (TRUE);
curwp->w_dotp = lforw(lp1);
curwp->w_doto = 0;
return (ldelete(nld, FALSE));
}
/*
* Insert a newline, then enough tabs and spaces to duplicate the indentation
* of the previous line. Assumes tabs are every eight characters. Quite simple.
* Figure out the indentation of the current line. Insert a newline by calling
* the standard routine. Insert the indentation by inserting the right number
* of tabs and spaces. Return TRUE if all ok. Return FALSE if one of the
* subcomands failed. Normally bound to "C-J".
*/
indent(f, n)
{
register int nicol;
register int c;
register int i;
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
if (n < 0)
return (FALSE);
while (n--) {
nicol = 0;
for (i=0; i<llength(curwp->w_dotp); ++i) {
c = lgetc(curwp->w_dotp, i);
if (c!=' ' && c!='\t')
break;
if (c == '\t')
nicol |= tabmask;
++nicol;
}
if (lnewline() == FALSE
|| ((i=nicol/8)!=0 && linsert(i, '\t')==FALSE)
|| ((i=nicol%8)!=0 && linsert(i, ' ')==FALSE))
return (FALSE);
}
return (TRUE);
}
/*
* Delete forward. This is real easy, because the basic delete routine does
* all of the work. Watches for negative arguments, and does the right thing.
* If any argument is present, it kills rather than deletes, to prevent loss
* of text if typed with a big argument. Normally bound to "C-D".
*/
forwdel(f, n)
{
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
if (n < 0)
return (backdel(f, -n));
if (f != FALSE) { /* Really a kill. */
if ((lastflag&CFKILL) == 0)
kdelete();
thisflag |= CFKILL;
}
return (ldelete((long)n, f));
}
/*
* Delete backwards. This is quite easy too, because it's all done with other
* functions. Just move the cursor back, and delete forwards. Like delete
* forward, this actually does a kill if presented with an argument. Bound to
* both "RUBOUT" and "C-H".
*/
backdel(f, n)
{
register int s;
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
if (n < 0)
return (forwdel(f, -n));
if (f != FALSE) { /* Really a kill. */
if ((lastflag&CFKILL) == 0)
kdelete();
thisflag |= CFKILL;
}
if ((s=backchar(f, n)) == TRUE)
s = ldelete((long)n, f);
return (s);
}
/*
* Kill text. If called without an argument, it kills from dot to the end of
* the line, unless it is at the end of the line, when it kills the newline.
* If called with an argument of 0, it kills from the start of the line to dot.
* If called with a positive argument, it kills from dot forward over that
* number of newlines. If called with a negative argument it kills backwards
* that number of newlines. Normally bound to "C-K".
*/
killtext(f, n)
{
register LINE *nextp;
long chunk;
if (curbp->b_mode&MDVIEW) /* don't allow this command if */
return(rdonly()); /* we are in read only mode */
if ((lastflag&CFKILL) == 0) /* Clear kill buffer if */
kdelete(); /* last wasn't a kill. */
thisflag |= CFKILL;
if (f == FALSE) {
chunk = llength(curwp->w_dotp)-curwp->w_doto;
if (chunk == 0)
chunk = 1;
} else if (n == 0) {
chunk = curwp->w_doto;
curwp->w_doto = 0;
} else if (n > 0) {
chunk = llength(curwp->w_dotp)-curwp->w_doto+1;
nextp = lforw(curwp->w_dotp);
while (--n) {
if (nextp == curbp->b_linep)
return (FALSE);
chunk += llength(nextp)+1;
nextp = lforw(nextp);
}
} else {
mlwrite("neg kill");
return (FALSE);
}
return(ldelete(chunk, TRUE));
}
setmode(f, n) /* prompt and set an editor mode */
int f, n; /* default and argument */
{
#if PKCODE
return adjustmode(TRUE, FALSE);
#else
adjustmode(TRUE, FALSE);
#endif
}
delmode(f, n) /* prompt and delete an editor mode */
int f, n; /* default and argument */
{
#if PKCODE
return adjustmode(FALSE, FALSE);
#else
adjustmode(FALSE, FALSE);
#endif
}
setgmode(f, n) /* prompt and set a global editor mode */
int f, n; /* default and argument */
{
#if PKCODE
return adjustmode(TRUE, TRUE);
#else
adjustmode(TRUE, TRUE);
#endif
}
delgmode(f, n) /* prompt and delete a global editor mode */
int f, n; /* default and argument */
{
#if PKCODE
return adjustmode(FALSE, TRUE);
#else
adjustmode(FALSE, TRUE);
#endif
}
adjustmode(kind, global) /* change the editor mode status */
int kind; /* true = set, false = delete */
int global; /* true = global flag, false = current buffer flag */
{
register char *scan; /* scanning pointer to convert prompt */
register int i; /* loop index */
register int status; /* error return on input */
#if COLOR
register int uflag; /* was modename uppercase? */
#endif
char prompt[50]; /* string to prompt user with */
char cbuf[NPAT]; /* buffer to recieve mode name into */
/* build the proper prompt string */
if (global)
strcpy(prompt,"Global mode to ");
else
strcpy(prompt,"Mode to ");
if (kind == TRUE)
strcat(prompt, "add: ");
else
strcat(prompt, "delete: ");
/* prompt the user and get an answer */
status = mlreply(prompt, cbuf, NPAT - 1);
if (status != TRUE)
return(status);
/* make it uppercase */
scan = cbuf;
#if COLOR
uflag = (*scan >= 'A' && *scan <= 'Z');
#endif
while (*scan != 0) {
if (*scan >= 'a' && *scan <= 'z')
*scan = *scan - 32;
scan++;
}
/* test it first against the colors we know */
#if PKCODE & IBMPC
for (i=0; i<=NCOLORS; i++) {
#else
for (i=0; i<NCOLORS; i++) {
#endif
if (strcmp(cbuf, cname[i]) == 0) {
/* finding the match, we set the color */
#if COLOR
if (uflag)
{
if (global)
gfcolor = i;
#if PKCODE == 0
else
#endif
curwp->w_fcolor = i;
}
else
{
if (global)
gbcolor = i;
#if PKCODE == 0
else
#endif
curwp->w_bcolor = i;
}
curwp->w_flag |= WFCOLR;
#endif
mlerase();
return(TRUE);
}
}
/* test it against the modes we know */
for (i=0; i < NUMMODES; i++) {
if (strcmp(cbuf, modename[i]) == 0) {
/* finding a match, we process it */
if (kind == TRUE)
if (global)
gmode |= (1 << i);
else
curbp->b_mode |= (1 << i);
else
if (global)
gmode &= ~(1 << i);
else
curbp->b_mode &= ~(1 << i);
/* display new mode line */
if (global == 0)
upmode();
mlerase(); /* erase the junk */
return(TRUE);
}
}
mlwrite("No such mode!");
return(FALSE);
}
/* This function simply clears the message line,
mainly for macro usage */
clrmes(f, n)
int f, n; /* arguments ignored */
{
mlforce("");
return(TRUE);
}
/* This function writes a string on the message line
mainly for macro usage */
writemsg(f, n)
int f, n; /* arguments ignored */
{
register char *sp; /* pointer into buf to expand %s */
register char *np; /* ptr into nbuf */
register int status;
char buf[NPAT]; /* buffer to recieve message into */
char nbuf[NPAT*2]; /* buffer to expand string into */
if ((status = mlreply("Message to write: ", buf, NPAT - 1)) != TRUE)
return(status);
/* expand all '%' to "%%" so mlwrite won't expect arguments */
sp = buf;
np = nbuf;
while (*sp) {
*np++ = *sp;
if (*sp++ == '%')
*np++ = '%';
}
*np = '\0';
/* write the message out */
mlforce(nbuf);
return(TRUE);
}
#if CFENCE
/* the cursor is moved to a matching fence */
getfence(f, n)
int f, n; /* not used */
{
register LINE *oldlp; /* original line pointer */
register int oldoff; /* and offset */
register int sdir; /* direction of search (1/-1) */
register int count; /* current fence level count */
register char ch; /* fence type to match against */
register char ofence; /* open fence */
register char c; /* current character in scan */
/* save the original cursor position */
oldlp = curwp->w_dotp;
oldoff = curwp->w_doto;
/* get the current character */
if (oldoff == llength(oldlp))
ch = '\n';
else
ch = lgetc(oldlp, oldoff);
/* setup proper matching fence */
switch (ch) {
case '(': ofence = ')'; sdir = FORWARD; break;
case '{': ofence = '}'; sdir = FORWARD; break;
case '[': ofence = ']'; sdir = FORWARD; break;
case ')': ofence = '('; sdir = REVERSE; break;
case '}': ofence = '{'; sdir = REVERSE; break;
case ']': ofence = '['; sdir = REVERSE; break;
default: TTbeep(); return(FALSE);
}
/* set up for scan */
count = 1;
if (sdir == REVERSE)
backchar(FALSE, 1);
else
forwchar(FALSE, 1);
/* scan until we find it, or reach the end of file */
while (count > 0) {
if (curwp->w_doto == llength(curwp->w_dotp))
c = '\n';
else
c = lgetc(curwp->w_dotp, curwp->w_doto);
if (c == ch)
++count;
if (c == ofence)
--count;
if (sdir == FORWARD)
forwchar(FALSE, 1);
else
backchar(FALSE, 1);
if (boundry(curwp->w_dotp, curwp->w_doto, sdir))
break;
}
/* if count is zero, we have a match, move the sucker */
if (count == 0) {
if (sdir == FORWARD)
backchar(FALSE, 1);
else
forwchar(FALSE, 1);
curwp->w_flag |= WFMOVE;
return(TRUE);
}
/* restore the current position */
curwp->w_dotp = oldlp;
curwp->w_doto = oldoff;
TTbeep();
return(FALSE);
}
#endif
/* Close fences are matched against their partners, and if
on screen the cursor briefly lights there */
fmatch(ch)
char ch; /* fence type to match against */
{
register LINE *oldlp; /* original line pointer */
register int oldoff; /* and offset */
register LINE *toplp; /* top line in current window */
register int count; /* current fence level count */
register char opench; /* open fence */
register char c; /* current character in scan */
register int i;
/* first get the display update out there */
update(FALSE);
/* save the original cursor position */
oldlp = curwp->w_dotp;
oldoff = curwp->w_doto;
/* setup proper open fence for passed close fence */
if (ch == ')')
opench = '(';
else if (ch == '}')
opench = '{';
else
opench = '[';
/* find the top line and set up for scan */
toplp = curwp->w_linep->l_bp;
count = 1;
backchar(FALSE, 2);
/* scan back until we find it, or reach past the top of the window */
while (count > 0 && curwp->w_dotp != toplp) {
if (curwp->w_doto == llength(curwp->w_dotp))
c = '\n';
else
c = lgetc(curwp->w_dotp, curwp->w_doto);
if (c == ch)
++count;
if (c == opench)
--count;
backchar(FALSE, 1);
if (curwp->w_dotp == curwp->w_bufp->b_linep->l_fp &&
curwp->w_doto == 0)
break;
}
/* if count is zero, we have a match, display the sucker */
/* there is a real machine dependant timing problem here we have
yet to solve......... */
if (count == 0) {
forwchar(FALSE, 1);
for (i = 0; i < term.t_pause; i++)
update(FALSE);
}
/* restore the current position */
curwp->w_dotp = oldlp;
curwp->w_doto = oldoff;
return(TRUE);
}
istring(f, n) /* ask for and insert a string into the current
buffer at the current point */
int f, n; /* ignored arguments */
{
register int status; /* status return code */
char tstring[NPAT+1]; /* string to add */
/* ask for string to insert */
status = mlreplyt("String to insert<META>: ", tstring, NPAT, metac);
if (status != TRUE)
return(status);
if (f == FALSE)
n = 1;
if (n < 0)
n = - n;
/* insert it */
while (n-- && (status = linstr(tstring)))
;
return(status);
}
ovstring(f, n) /* ask for and overwite a string into the current
buffer at the current point */
int f, n; /* ignored arguments */
{
register int status; /* status return code */
char tstring[NPAT+1]; /* string to add */
/* ask for string to insert */
status = mlreplyt("String to overwrite<META>: ", tstring, NPAT, metac);
if (status != TRUE)
return(status);
if (f == FALSE)
n = 1;
if (n < 0)
n = - n;
/* insert it */
while (n-- && (status = lover(tstring)))
;
return(status);
}
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