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The Devil's Doorknob BBS Capture (1996-2003)
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devilsdoorknobbbscapture1996-2003.iso
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UTIL
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WWIVE
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TEDIT.C
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1991-12-24
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358 lines
/*****************************************************************************
WWIV Version 4
Copyright (C) 1988-1991 by Wayne Bell
Distribution of the source code for WWIV, in any form, modified or unmodified,
without PRIOR, WRITTEN APPROVAL by the author, is expressly prohibited.
Distribution of compiled versions of WWIV is limited to copies compiled BY
THE AUTHOR. Distribution of any copies of WWIV not compiled by the author
is expressly prohibited.
*****************************************************************************/
#include "vars.h"
#pragma hdrstop
#include <dir.h>
#define utoa(s,v,r) ultoa((unsigned long)(s),v,r)
struct line *read_file(char *fn, int *numlines)
{
char b[1024],s[160],s1[160];
int f,i,n,nb,cb,sp,oor;
struct line *l,*l1,*topline;
*numlines=-1;
oor=0;
topline=NULL;
sprintf(s,"%s%s",syscfg.gfilesdir,fn);
f=open(s,O_RDWR | O_BINARY);
if (f<0) {
nl();
pl("File not found.");
nl();
return(NULL);
}
nb=read(f,(void *)b,1024);
cb=0;
sp=0;
*numlines=0;
while ((nb) && (!oor)) {
if (b[cb]==13) {
s[sp]=0;
sp=0;
if (farcoreleft()<10240) {
nl();
pl("Ran out of memory. Not all of file read.");
nl();
oor=1;
} else {
l1=(struct line *)farmalloc((long) sizeof(struct line));
strcpy((l1->text),s);
l1->next=NULL;
l1->prev=NULL;
if (topline==NULL) {
topline=l1;
l=l1;
} else {
l->next=l1;
l1->prev=l;
l=l1;
}
++(*numlines);
}
} else {
if (b[cb]!=10)
s[sp++]=b[cb];
}
++cb;
if (cb==nb) {
nb=read(f,(void *)b,1024);
cb=0;
}
}
return(topline);
}
void kill_file(struct line *topline)
{
struct line *l,*l1;
l=topline;
while (l!=NULL) {
l1=l->next;
farfree((void *)l);
l=l1;
}
}
void save_file(char *fn, struct line *topline)
{
int i,f;
char s[170];
struct line *l,*l1;
nl();
pl("3Saving...");
sprintf(s,"%s%s",syscfg.gfilesdir,fn);
f=open(s,O_RDWR | O_BINARY | O_CREAT | O_TRUNC, S_IREAD | S_IWRITE);
l=topline;
while (l!=NULL) {
strcpy(s,(l->text));
strcat(s,"\r\n");
write(f,(void *)s,strlen(s));
l=l->next;
}
s[0]=26;
write(f,(void *)s,1);
close(f);
}
int printl(int n, struct line *l)
{
int abort;
char s[160];
abort=0;
if (n<1)
strcpy(s," [TOP]");
else
if (l==NULL)
strcpy(s," [END]");
else
sprintf(s,"%3d: %s",n,(l->text));
pla(s,&abort);
if (abort)
nl();
return(abort);
}
void tedit(char *fn)
{
struct line *topline,*l,*l1,*c,*bottomline;
int numlines,curline,i,i1,i2,done,save,abort;
char s[160],s1[160],rollover[160];
rollover[0]=0;
thisuser.screenchars -= 5;
topline=NULL;
numlines=0;
curline=0;
topline=read_file(fn,&numlines);
npr("%d lines read in.\r\n",numlines);
nl();
done=0;
save=0;
if (numlines>0) {
curline=1;
bottomline=topline;
while ((bottomline->next)!=NULL)
bottomline=bottomline->next;
} else
curline=0;
if (numlines<1)
numlines=0;
c=topline;
printl(curline,c);
do {
outstr(":");
input(s,10);
i=atoi(s);
if ((s[0]>='0') && (s[0]<='9')) {
i-=curline;
if (i==0)
strcpy(s,"~");
else
if (i>0) {
s[0]='+';
itoa(i,&(s[1]),10);
} else {
itoa(i,s,10);
}
}
if (s[0]==0)
strcpy(s,"+");
switch(s[0]) {
case '?':
printmenu(11);
break;
case 'Q':
done=1;
save=0;
break;
case 'S':
done=1;
save=1;
break;
case 'L':
i=curline;
l=c;
while ((l!=NULL) && (printl(i,l)==0)) {
l=l->next;
++i;
}
break;
case 'T':
c=topline;
if (topline==NULL)
curline=0;
else
curline=1;
printl(curline,c);
break;
case 'B':
c=NULL;
curline=numlines+1;
printl(curline,c);
break;
case '-':
if (curline) {
i=atoi(&(s[1]));
if (i==0)
i=1;
for (i1=0; (i1<i) && (curline); i1++) {
if (c==NULL)
c=bottomline;
else
c=c->prev;
--curline;
}
}
printl(curline,c);
break;
case '+':
if (curline!=numlines+1) {
i=atoi(&(s[1]));
if (i==0)
i=1;
for (i1=0; (i1<i) && (curline!=numlines+1); i1++) {
if (c==NULL)
c=topline;
else
c=c->next;
++curline;
}
}
printl(curline,c);
break;
case 'D':
i=atoi(&(s[1]));
if (i==0)
i=1;
for (i1=0; (i1<i) && (c!=NULL); i1++) {
if (c->prev==NULL)
if (c->next==NULL) {
topline=NULL;
bottomline=NULL;
} else
topline=c->next;
else
if (c->next==NULL)
bottomline=c->prev;
l=c;
if (c->prev!=NULL)
c->prev->next=c->next;
if (c->next!=NULL)
c->next->prev=c->prev;
c=c->next;
farfree((void *)l);
--numlines;
}
printl(curline,c);
break;
case 'P':
printl(curline,c);
break;
case 'C':
nl();
prt(5,"Clear workspace? ");
if (yn()) {
kill_file(topline);
topline=NULL;
bottomline=NULL;
c=NULL;
numlines=0;
curline=0;
pl("File cleared.");
}
break;
case 'I':
nl();
pl("Enter '.' on its own line to exit insert mode.");
i1=0;
do {
if (farcoreleft()<10240) {
nl();
pl("Not enough memory left to insert anything.");
nl();
i1=1;
} else {
sprintf(s1,"%3d: ",curline);
if (curline<1)
strcpy(s1," 1: ");
outstr(s1);
inli(s1,rollover,150,1);
if (strcmp(s1,".")==0)
i1=1;
else {
l=(struct line *)farmalloc(sizeof(struct line));
strcpy((l->text),s1);
if (c!=NULL) {
l->next=c;
if (c->prev!=NULL) {
c->prev->next=l;
l->prev=c->prev;
c->prev=l;
} else {
c->prev=l;
l->prev=NULL;
topline=l;
}
} else {
if (topline==NULL) {
l->prev=NULL;
l->next=NULL;
topline=l;
bottomline=l;
curline=1;
} else
if (curline==numlines+1) {
l->prev=bottomline;
bottomline->next=l;
l->next=NULL;
bottomline=l;
} else {
l->prev=NULL;
l->next=topline;
topline->prev=l;
c=topline;
topline=l;
curline=1;
}
}
++numlines;
++curline;
}
}
} while ((!i1) && (!hangup));
break;
}
} while ((!done) && (!hangup));
thisuser.screenchars += 5;
if (save)
save_file(fn,topline);
kill_file(topline);
}