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- /* io.c Larn is copyrighted 1986 by Noah Morgan.
- *
- * Below are the functions in this file:
- *
- * setupvt100() Subroutine to set up terminal in correct mode for game
- * clearvt100() Subroutine to clean up terminal when the game is over
- * getchar() Routine to read in one character from the terminal
- * scbr() Function to set cbreak -echo for the terminal
- * sncbr() Function to set -cbreak echo for the terminal
- * newgame() Subroutine to save the initial time and seed rnd()
- *
- * FILE OUTPUT ROUTINES
- *
- * lprintf(format,args . . .) printf to the output buffer
- * lprint(integer) send binary integer to output buffer
- * lwrite(buf,len) write a buffer to the output buffer
- * lprcat(str) sent string to output buffer
- *
- * FILE OUTPUT MACROS (in header.h)
- *
- * lprc(character) put the character into the output buffer
- *
- * FILE INPUT ROUTINES
- *
- * long lgetc() read one character from input buffer
- * long lrint() read one integer from input buffer
- * lrfill(address,number) put input bytes into a buffer
- * char *lgetw() get a whitespace ended word from input
- * char *lgetl() get a \n or EOF ended line from input
- *
- * FILE OPEN / CLOSE ROUTINES
- *
- * lcreat(filename) create a new file for write
- * lopen(filename) open a file for read
- * lappend(filename) open for append to an existing file
- * lrclose() close the input file
- * lwclose() close output file
- * lflush() flush the output buffer
- *
- * Other Routines
- *
- * cursor(x,y) position cursor at [x,y]
- * cursors() position cursor at [1,24] (saves memory)
- * cl_line(x,y) Clear line at [1,y] and leave cursor at [x,y]
- * cl_up(x,y) Clear screen from [x,1] to current line.
- * cl_dn(x,y) Clear screen from [1,y] to end of display.
- * standout(str) Print the string in standout mode.
- * set_score_output() Called when output should be literally printed.
- ** putchar(ch) Print one character in decoded output buffer.
- ** flush_buf() Flush buffer with decoded output.
- ** init_term() Terminal initialization -- setup termcap info
- ** char *tmcapcnv(sd,ss) Routine to convert VT100 \33's to termcap format
- * beep() Routine to emit a beep if enabled (see no-beep in .larnopts)
- *
- * Note: ** entries are available only in termcap mode.
- */
-
- #include "header.h"
-
- #ifdef SYSV /* system III or system V */
- #include <termio.h>
- #define sgttyb termio
- #define stty(_a,_b) ioctl(_a,TCSETA,_b)
- #define gtty(_a,_b) ioctl(_a,TCGETA,_b)
- static int rawflg = 0;
- static char saveeof,saveeol;
- #define doraw(_a) if(!rawflg){++rawflg;saveeof=_a.c_cc[VMIN];saveeol=_a.c_cc[VTIME];}\
- _a.c_cc[VMIN]=1;_a.c_cc[VTIME]=1;_a.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL)
- #define unraw(_a) _a.c_cc[VMIN]=saveeof;_a.c_cc[VTIME]=saveeol;_a.c_lflag |= ICANON|ECHO|ECHOE|ECHOK|ECHONL
-
- #else not SYSV
-
- #ifndef BSD
- #define CBREAK RAW /* V7 has no CBREAK */
- #endif
-
- #define doraw(_a) (_a.sg_flags |= CBREAK,_a.sg_flags &= ~ECHO)
- #define unraw(_a) (_a.sg_flags &= ~CBREAK,_a.sg_flags |= ECHO)
- #include <sgtty.h>
- #endif not SYSV
-
- #ifndef NOVARARGS /* if we have varargs */
- #include <varargs.h>
- #else NOVARARGS /* if we don't have varargs */
- typedef char *va_list;
- #define va_dcl int va_alist;
- #define va_start(plist) plist = (char *) &va_alist
- #define va_end(plist)
- #define va_arg(plist,mode) ((mode *)(plist += sizeof(mode)))[-1]
- #endif NOVARARGS
-
- #define LINBUFSIZE 128 /* size of the lgetw() and lgetl() buffer */
- int lfd; /* output file numbers */
- int fd; /* input file numbers */
- static struct sgttyb ttx; /* storage for the tty modes */
- static int ipoint=MAXIBUF,iepoint=MAXIBUF; /* input buffering pointers */
- static char lgetwbuf[LINBUFSIZE]; /* get line (word) buffer */
-
- /*
- * setupvt100() Subroutine to set up terminal in correct mode for game
- *
- * Attributes off, clear screen, set scrolling region, set tty mode
- */
- setupvt100()
- {
- clear(); setscroll(); scbr(); /* system("stty cbreak -echo"); */
- }
-
- /*
- * clearvt100() Subroutine to clean up terminal when the game is over
- *
- * Attributes off, clear screen, unset scrolling region, restore tty mode
- */
- clearvt100()
- {
- resetscroll(); clear(); sncbr(); /* system("stty -cbreak echo"); */
- }
-
- /*
- * getchar() Routine to read in one character from the terminal
- */
- getchar()
- {
- char byt;
- #ifdef EXTRA
- c[BYTESIN]++;
- #endif
- lflush(); /* be sure output buffer is flushed */
- read(0,&byt,1); /* get byte from terminal */
- return(byt);
- }
-
- /*
- * scbr() Function to set cbreak -echo for the terminal
- *
- * like: system("stty cbreak -echo")
- */
- scbr()
- {
- gtty(0,&ttx); doraw(ttx); stty(0,&ttx);
- }
-
- /*
- * sncbr() Function to set -cbreak echo for the terminal
- *
- * like: system("stty -cbreak echo")
- */
- sncbr()
- {
- gtty(0,&ttx); unraw(ttx); stty(0,&ttx);
- }
-
- /*
- * newgame() Subroutine to save the initial time and seed rnd()
- */
- newgame()
- {
- register long *p,*pe;
- for (p=c,pe=c+100; p<pe; *p++ =0);
- time(&initialtime); srand(initialtime);
- lcreat((char*)0); /* open buffering for output to terminal */
- }
-
- /*
- * lprintf(format,args . . .) printf to the output buffer
- * char *format;
- * ??? args . . .
- *
- * Enter with the format string in "format", as per printf() usage
- * and any needed arguments following it
- * Note: lprintf() only supports %s, %c and %d, with width modifier and left
- * or right justification.
- * No correct checking for output buffer overflow is done, but flushes
- * are done beforehand if needed.
- * Returns nothing of value.
- */
- #ifdef lint
- /*VARARGS*/
- lprintf(str)
- char *str;
- {
- char *str2;
- str2 = str;
- str = str2; /* to make lint happy */
- }
- /*VARARGS*/
- sprintf(str)
- char *str;
- {
- char *str2;
- str2 = str;
- str = str2; /* to make lint happy */
- }
- #else lint
- /*VARARGS*/
- lprintf(va_alist)
- va_dcl
- {
- va_list ap; /* pointer for variable argument list */
- register char *fmt;
- register char *outb,*tmpb;
- register long wide,left,cont,n; /* data for lprintf */
- char db[12]; /* %d buffer in lprintf */
-
- va_start(ap); /* initialize the var args pointer */
- fmt = va_arg(ap, char *); /* pointer to format string */
- if (lpnt >= lpend) lflush();
- outb = lpnt;
- for ( ; ; )
- {
- while (*fmt != '%')
- if (*fmt) *outb++ = *fmt++; else { lpnt=outb; return; }
- wide = 0; left = 1; cont=1;
- while (cont)
- switch(*(++fmt))
- {
- case 'd': n = va_arg(ap, long);
- if (n<0) { n = -n; *outb++ = '-'; if (wide) --wide; }
- tmpb = db+11; *tmpb = (char)(n % 10 + '0');
- while (n>9) *(--tmpb) = (char)((n /= 10) % 10 + '0');
- if (wide==0) while (tmpb < db+12) *outb++ = *tmpb++;
- else
- {
- wide -= db-tmpb+12;
- if (left) while (wide-- > 0) *outb++ = ' ';
- while (tmpb < db+12) *outb++ = *tmpb++;
- if (left==0) while (wide-- > 0) *outb++ = ' ';
- }
- cont=0; break;
-
- case 's': tmpb = va_arg(ap, char *);
- if (wide==0) { while (*outb++ = *tmpb++); --outb; }
- else
- {
- n = wide - strlen(tmpb);
- if (left) while (n-- > 0) *outb++ = ' ';
- while (*outb++ = *tmpb++); --outb;
- if (left==0) while (n-- > 0) *outb++ = ' ';
- }
- cont=0; break;
-
- case 'c': *outb++ = va_arg(ap, int); cont=0; break;
-
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9': wide = 10*wide + *fmt - '0'; break;
-
- case '-': left = 0; break;
-
- default: *outb++ = *fmt; cont=0; break;
- };
- fmt++;
- }
- va_end(ap);
- }
- #endif lint
-
- /*
- * lprint(long-integer) send binary integer to output buffer
- * long integer;
- *
- * +---------+---------+---------+---------+
- * | high | | | low |
- * | order | | | order |
- * | byte | | | byte |
- * +---------+---------+---------+---------+
- * 31 --- 24 23 --- 16 15 --- 8 7 --- 0
- *
- * The save order is low order first, to high order (4 bytes total)
- * and is written to be system independent.
- * No checking for output buffer overflow is done, but flushes if needed!
- * Returns nothing of value.
- */
- lprint(x)
- register long x;
- {
- if (lpnt >= lpend) lflush();
- *lpnt++ = 255 & x; *lpnt++ = 255 & (x>>8);
- *lpnt++ = 255 & (x>>16); *lpnt++ = 255 & (x>>24);
- }
-
- /*
- * lwrite(buf,len) write a buffer to the output buffer
- * char *buf;
- * int len;
- *
- * Enter with the address and number of bytes to write out
- * Returns nothing of value
- */
- lwrite(buf,len)
- register char *buf;
- int len;
- {
- register char *str;
- register int num2;
- if (len > 399) /* don't copy data if can just write it */
- {
- #ifdef EXTRA
- c[BYTESOUT] += len;
- #endif
-
- #ifndef VT100
- for (str=buf; len>0; --len)
- lprc(*str++);
- #else VT100
- lflush();
- write(lfd,buf,len);
- #endif VT100
- }
- else while (len)
- {
- if (lpnt >= lpend) lflush(); /* if buffer is full flush it */
- num2 = lpbuf+BUFBIG-lpnt; /* # bytes left in output buffer */
- if (num2 > len) num2=len;
- str = lpnt; len -= num2;
- while (num2--) *str++ = *buf++; /* copy in the bytes */
- lpnt = str;
- }
- }
-
- /*
- * long lgetc() Read one character from input buffer
- *
- * Returns 0 if EOF, otherwise the character
- */
- long lgetc()
- {
- register int i;
- if (ipoint != iepoint) return(inbuffer[ipoint++]);
- if (iepoint!=MAXIBUF) return(0);
- if ((i=read(fd,inbuffer,MAXIBUF))<=0)
- {
- if (i!=0) write(1,"error reading from input file\n",30);
- iepoint = ipoint = 0; return(0);
- }
- ipoint=1; iepoint=i; return(*inbuffer);
- }
-
- /*
- * long lrint() Read one integer from input buffer
- *
- * +---------+---------+---------+---------+
- * | high | | | low |
- * | order | | | order |
- * | byte | | | byte |
- * +---------+---------+---------+---------+
- * 31 --- 24 23 --- 16 15 --- 8 7 --- 0
- *
- * The save order is low order first, to high order (4 bytes total)
- * Returns the int read
- */
- long lrint()
- {
- register unsigned long i;
- i = 255 & lgetc(); i |= (255 & lgetc()) << 8;
- i |= (255 & lgetc()) << 16; i |= (255 & lgetc()) << 24;
- return(i);
- }
-
- /*
- * lrfill(address,number) put input bytes into a buffer
- * char *address;
- * int number;
- *
- * Reads "number" bytes into the buffer pointed to by "address".
- * Returns nothing of value
- */
- lrfill(adr,num)
- register char *adr;
- int num;
- {
- register char *pnt;
- register int num2;
- while (num)
- {
- if (iepoint == ipoint)
- {
- if (num>5) /* fast way */
- {
- if (read(fd,adr,num) != num)
- write(2,"error reading from input file\n",30);
- num=0;
- }
- else { *adr++ = lgetc(); --num; }
- }
- else
- {
- num2 = iepoint-ipoint; /* # of bytes left in the buffer */
- if (num2 > num) num2=num;
- pnt = inbuffer+ipoint; num -= num2; ipoint += num2;
- while (num2--) *adr++ = *pnt++;
- }
- }
- }
-
- /*
- * char *lgetw() Get a whitespace ended word from input
- *
- * Returns pointer to a buffer that contains word. If EOF, returns a NULL
- */
- char *lgetw()
- {
- register char *lgp,cc;
- register int n=LINBUFSIZE,quote=0;
- lgp = lgetwbuf;
- do cc=lgetc(); while ((cc <= 32) && (cc > NULL)); /* eat whitespace */
- for ( ; ; --n,cc=lgetc())
- {
- if ((cc==NULL) && (lgp==lgetwbuf)) return(NULL); /* EOF */
- if ((n<=1) || ((cc<=32) && (quote==0))) { *lgp=NULL; return(lgetwbuf); }
- if (cc != '"') *lgp++ = cc; else quote ^= 1;
- }
- }
-
- /*
- * char *lgetl() Function to read in a line ended by newline or EOF
- *
- * Returns pointer to a buffer that contains the line. If EOF, returns NULL
- */
- char *lgetl()
- {
- register int i=LINBUFSIZE,ch;
- register char *str=lgetwbuf;
- for ( ; ; --i)
- {
- if ((*str++ = ch = lgetc()) == NULL)
- {
- if (str == lgetwbuf+1) return(NULL); /* EOF */
- ot: *str = NULL; return(lgetwbuf); /* line ended by EOF */
- }
- if ((ch=='\n') || (i<=1)) goto ot; /* line ended by \n */
- }
- }
-
- /*
- * lcreat(filename) Create a new file for write
- * char *filename;
- *
- * lcreat((char*)0); means to the terminal
- * Returns -1 if error, otherwise the file descriptor opened.
- */
- lcreat(str)
- char *str;
- {
- lpnt = lpbuf; lpend = lpbuf+BUFBIG;
- if (str==NULL) return(lfd=1);
- if ((lfd=creat(str,0644)) < 0)
- {
- lfd=1; lprintf("error creating file <%s>\n",str); lflush(); return(-1);
- }
- return(lfd);
- }
-
- /*
- * lopen(filename) Open a file for read
- * char *filename;
- *
- * lopen(0) means from the terminal
- * Returns -1 if error, otherwise the file descriptor opened.
- */
- lopen(str)
- char *str;
- {
- ipoint = iepoint = MAXIBUF;
- if (str==NULL) return(fd=0);
- if ((fd=open(str,0)) < 0)
- {
- lwclose(); lfd=1; lpnt=lpbuf; return(-1);
- }
- return(fd);
- }
-
- /*
- * lappend(filename) Open for append to an existing file
- * char *filename;
- *
- * lappend(0) means to the terminal
- * Returns -1 if error, otherwise the file descriptor opened.
- */
- lappend(str)
- char *str;
- {
- lpnt = lpbuf; lpend = lpbuf+BUFBIG;
- if (str==NULL) return(lfd=1);
- if ((lfd=open(str,2)) < 0)
- {
- lfd=1; return(-1);
- }
- lseek(lfd,0,2); /* seek to end of file */
- return(lfd);
- }
-
- /*
- * lrclose() close the input file
- *
- * Returns nothing of value.
- */
- lrclose()
- {
- if (fd > 0) close(fd);
- }
-
- /*
- * lwclose() close output file flushing if needed
- *
- * Returns nothing of value.
- */
- lwclose()
- {
- lflush(); if (lfd > 2) close(lfd);
- }
-
- /*
- * lprcat(string) append a string to the output buffer
- * avoids calls to lprintf (time consuming)
- */
- lprcat(str)
- register char *str;
- {
- register char *str2;
- if (lpnt >= lpend) lflush();
- str2 = lpnt;
- while (*str2++ = *str++);
- lpnt = str2 - 1;
- }
-
- #ifdef VT100
- /*
- * cursor(x,y) Subroutine to set the cursor position
- *
- * x and y are the cursor coordinates, and lpbuff is the output buffer where
- * escape sequence will be placed.
- */
- static char *y_num[]= { "\33[","\33[","\33[2","\33[3","\33[4","\33[5","\33[6",
- "\33[7","\33[8","\33[9","\33[10","\33[11","\33[12","\33[13","\33[14",
- "\33[15","\33[16","\33[17","\33[18","\33[19","\33[20","\33[21","\33[22",
- "\33[23","\33[24" };
-
- static char *x_num[]= { "H","H",";2H",";3H",";4H",";5H",";6H",";7H",";8H",";9H",
- ";10H",";11H",";12H",";13H",";14H",";15H",";16H",";17H",";18H",";19H",
- ";20H",";21H",";22H",";23H",";24H",";25H",";26H",";27H",";28H",";29H",
- ";30H",";31H",";32H",";33H",";34H",";35H",";36H",";37H",";38H",";39H",
- ";40H",";41H",";42H",";43H",";44H",";45H",";46H",";47H",";48H",";49H",
- ";50H",";51H",";52H",";53H",";54H",";55H",";56H",";57H",";58H",";59H",
- ";60H",";61H",";62H",";63H",";64H",";65H",";66H",";67H",";68H",";69H",
- ";70H",";71H",";72H",";73H",";74H",";75H",";76H",";77H",";78H",";79H",
- ";80H" };
-
- cursor(x,y)
- int x,y;
- {
- register char *p;
- if (lpnt >= lpend) lflush();
-
- p = y_num[y]; /* get the string to print */
- while (*p) *lpnt++ = *p++; /* print the string */
-
- p = x_num[x]; /* get the string to print */
- while (*p) *lpnt++ = *p++; /* print the string */
- }
- #else VT100
- /*
- * cursor(x,y) Put cursor at specified coordinates staring at [1,1] (termcap)
- */
- cursor (x,y)
- int x,y;
- {
- if (lpnt >= lpend) lflush ();
-
- *lpnt++ = CURSOR; *lpnt++ = x; *lpnt++ = y;
- }
- #endif VT100
-
- /*
- * Routine to position cursor at beginning of 24th line
- */
- cursors()
- {
- cursor(1,24);
- }
-
- #ifndef VT100
- /*
- * Warning: ringing the bell is control code 7. Don't use in defines.
- * Don't change the order of these defines.
- * Also used in helpfiles. Codes used in helpfiles should be \E[1 to \E[7 with
- * obvious meanings.
- */
-
- static char cap[256];
- char *CM, *CE, *CD, *CL, *SO, *SE, *AL, *DL;/* Termcap capabilities */
- static char *outbuf=0; /* translated output buffer */
-
- int putchar ();
-
- /*
- * init_term() Terminal initialization -- setup termcap info
- */
- init_term()
- {
- char termbuf[1024];
- char *capptr = cap+10;
- char *term;
-
- switch (tgetent(termbuf, term = getenv("TERM")))
- {
- case -1:
- write(2, "Cannot open termcap file.\n", 26); exit();
- case 0:
- write(2, "Cannot find entry of ", 21);
- write(2, term, strlen (term));
- write(2, " in termcap\n", 12);
- exit();
- };
-
- CM = tgetstr("cm", &capptr); /* Cursor motion */
- CE = tgetstr("ce", &capptr); /* Clear to eoln */
- CL = tgetstr("cl", &capptr); /* Clear screen */
-
- /* OPTIONAL */
- AL = tgetstr("al", &capptr); /* Insert line */
- DL = tgetstr("dl", &capptr); /* Delete line */
- SO = tgetstr("so", &capptr); /* Begin standout mode */
- SE = tgetstr("se", &capptr); /* End standout mode */
- CD = tgetstr("cd", &capptr); /* Clear to end of display */
-
- if (!CM) /* can't find cursor motion entry */
- {
- write(2, "Sorry, for a ",13); write(2, term, strlen(term));
- write(2, ", I can't find the cursor motion entry in termcap\n",50);
- exit();
- }
- if (!CE) /* can't find clear to end of line entry */
- {
- write(2, "Sorry, for a ",13); write(2, term, strlen(term));
- write(2,", I can't find the clear to end of line entry in termcap\n",57);
- exit();
- }
- if (!CL) /* can't find clear entire screen entry */
- {
- write(2, "Sorry, for a ",13); write(2, term, strlen(term));
- write(2, ", I can't find the clear entire screen entry in termcap\n",56);
- exit();
- }
- if ((outbuf=malloc(BUFBIG+16))==0) /* get memory for decoded output buffer*/
- {
- write(2,"Error malloc'ing memory for decoded output buffer\n",50);
- died(-285); /* malloc() failure */
- }
- }
- #endif VT100
-
- /*
- * cl_line(x,y) Clear the whole line indicated by 'y' and leave cursor at [x,y]
- */
- cl_line(x,y)
- int x,y;
- {
- #ifdef VT100
- cursor(x,y); lprcat("\33[2K");
- #else VT100
- cursor(1,y); *lpnt++ = CL_LINE; cursor(x,y);
- #endif VT100
- }
-
- /*
- * cl_up(x,y) Clear screen from [x,1] to current position. Leave cursor at [x,y]
- */
- cl_up(x,y)
- register int x,y;
- {
- #ifdef VT100
- cursor(x,y); lprcat("\33[1J\33[2K");
- #else VT100
- register int i;
- cursor(1,1);
- for (i=1; i<=y; i++) { *lpnt++ = CL_LINE; *lpnt++ = '\n'; }
- cursor(x,y);
- #endif VT100
- }
-
- /*
- * cl_dn(x,y) Clear screen from [1,y] to end of display. Leave cursor at [x,y]
- */
- cl_dn(x,y)
- register int x,y;
- {
- #ifdef VT100
- cursor(x,y); lprcat("\33[J\33[2K");
- #else VT100
- register int i;
- cursor(1,y);
- if (!CD)
- {
- *lpnt++ = CL_LINE;
- for (i=y; i<=24; i++) { *lpnt++ = CL_LINE; if (i!=24) *lpnt++ = '\n'; }
- cursor(x,y);
- }
- else
- *lpnt++ = CL_DOWN;
- cursor(x,y);
- #endif VT100
- }
-
- /*
- * standout(str) Print the argument string in inverse video (standout mode).
- */
- standout(str)
- register char *str;
- {
- #ifdef VT100
- setbold();
- while (*str)
- *lpnt++ = *str++;
- resetbold();
- #else VT100
- *lpnt++ = ST_START;
- while (*str)
- *lpnt++ = *str++;
- *lpnt++ = ST_END;
- #endif VT100
- }
-
- /*
- * set_score_output() Called when output should be literally printed.
- */
- set_score_output()
- {
- enable_scroll = -1;
- }
-
- /*
- * lflush() Flush the output buffer
- *
- * Returns nothing of value.
- * for termcap version: Flush output in output buffer according to output
- * status as indicated by `enable_scroll'
- */
- #ifndef VT100
- static int scrline=18; /* line # for wraparound instead of scrolling if no DL */
- lflush ()
- {
- register int lpoint;
- register char *str;
- static int curx = 0;
- static int cury = 0;
-
- if ((lpoint = lpnt - lpbuf) > 0)
- {
- #ifdef EXTRA
- c[BYTESOUT] += lpoint;
- #endif
- if (enable_scroll <= -1)
- {
- flush_buf();
- if (write(lfd,lpbuf,lpoint) != lpoint)
- write(2,"error writing to output file\n",29);
- lpnt = lpbuf; /* point back to beginning of buffer */
- return;
- }
- for (str = lpbuf; str < lpnt; str++)
- {
- if (*str>=32) { putchar (*str); curx++; }
- else switch (*str)
- {
- case CLEAR: tputs (CL, 0, putchar); curx = cury = 0;
- break;
-
- case CL_LINE: tputs (CE, 0, putchar);
- break;
-
- case CL_DOWN: tputs (CD, 0, putchar);
- break;
-
- case ST_START: tputs (SO, 0, putchar);
- break;
-
- case ST_END: tputs (SE, 0, putchar);
- break;
-
- case CURSOR: curx = *++str - 1; cury = *++str - 1;
- tputs (tgoto (CM, curx, cury), 0, putchar);
- break;
-
- case '\n': if ((cury == 23) && enable_scroll)
- {
- if (!DL || !AL) /* wraparound or scroll? */
- {
- if (++scrline > 23) scrline=19;
-
- if (++scrline > 23) scrline=19;
- tputs (tgoto (CM, 0, scrline), 0, putchar);
- tputs (CE, 0, putchar);
-
- if (--scrline < 19) scrline=23;
- tputs (tgoto (CM, 0, scrline), 0, putchar);
- tputs (CE, 0, putchar);
- }
- else
- {
- tputs (tgoto (CM, 0, 19), 0, putchar);
- tputs (DL, 0, putchar);
- tputs (tgoto (CM, 0, 23), 0, putchar);
- /* tputs (AL, 0, putchar); */
- }
- }
- else
- {
- putchar ('\n'); cury++;
- }
- curx = 0;
- break;
-
- default: putchar (*str); curx++;
- };
- }
- }
- lpnt = lpbuf;
- flush_buf(); /* flush real output buffer now */
- }
- #else VT100
- /*
- * lflush() flush the output buffer
- *
- * Returns nothing of value.
- */
- lflush()
- {
- register int lpoint;
- if ((lpoint = lpnt - lpbuf) > 0)
- {
- #ifdef EXTRA
- c[BYTESOUT] += lpoint;
- #endif
- if (write(lfd,lpbuf,lpoint) != lpoint)
- write(2,"error writing to output file\n",29);
- }
- lpnt = lpbuf; /* point back to beginning of buffer */
- }
- #endif VT100
-
- #ifndef VT100
- static int index=0;
- /*
- * putchar(ch) Print one character in decoded output buffer.
- */
- int putchar(c)
- int c;
- {
- outbuf[index++] = c;
- if (index >= BUFBIG) flush_buf();
- }
-
- /*
- * flush_buf() Flush buffer with decoded output.
- */
- flush_buf()
- {
- if (index) write(lfd, outbuf, index);
- index = 0;
- }
-
- /*
- * char *tmcapcnv(sd,ss) Routine to convert VT100 escapes to termcap format
- *
- * Processes only the \33[#m sequence (converts . files for termcap use
- */
- char *tmcapcnv(sd,ss)
- register char *sd,*ss;
- {
- register int tmstate=0; /* 0=normal, 1=\33 2=[ 3=# */
- char tmdigit=0; /* the # in \33[#m */
- while (*ss)
- {
- switch(tmstate)
- {
- case 0: if (*ss=='\33') { tmstate++; break; }
- ign: *sd++ = *ss;
- ign2: tmstate = 0;
- break;
- case 1: if (*ss!='[') goto ign;
- tmstate++;
- break;
- case 2: if (isdigit(*ss)) { tmdigit= *ss-'0'; tmstate++; break; }
- if (*ss == 'm') { *sd++ = ST_END; goto ign2; }
- goto ign;
- case 3: if (*ss == 'm')
- {
- if (tmdigit) *sd++ = ST_START;
- else *sd++ = ST_END;
- goto ign2;
- }
- default: goto ign;
- };
- ss++;
- }
- *sd=0; /* NULL terminator */
- return(sd);
- }
- #endif VT100
-
- /*
- * beep() Routine to emit a beep if enabled (see no-beep in .larnopts)
- */
- beep()
- {
- if (!nobeep) *lpnt++ = '\7';
- }
-