921 lines
22 KiB
C
921 lines
22 KiB
C
/* io.c Larn is copyrighted 1986 by Noah Morgan.
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*
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* Below are the functions in this file:
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*
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* setupvt100() Subroutine to set up terminal in correct mode for game
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* clearvt100() Subroutine to clean up terminal when the game is over
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* getchar() Routine to read in one character from the terminal
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* scbr() Function to set cbreak -echo for the terminal
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* sncbr() Function to set -cbreak echo for the terminal
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* newgame() Subroutine to save the initial time and seed rnd()
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*
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* FILE OUTPUT ROUTINES
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*
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* lprintf(format,args . . .) printf to the output buffer
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* lprint(integer) send binary integer to output buffer
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* lwrite(buf,len) write a buffer to the output buffer
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* lprcat(str) sent string to output buffer
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*
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* FILE OUTPUT MACROS (in header.h)
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*
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* lprc(character) put the character into the output buffer
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*
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* FILE INPUT ROUTINES
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*
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* long lgetc() read one character from input buffer
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* long lrint() read one integer from input buffer
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* lrfill(address,number) put input bytes into a buffer
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* char *lgetw() get a whitespace ended word from input
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* char *lgetl() get a \n or EOF ended line from input
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*
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* FILE OPEN / CLOSE ROUTINES
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*
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* lcreat(filename) create a new file for write
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* lopen(filename) open a file for read
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* lappend(filename) open for append to an existing file
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* lrclose() close the input file
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* lwclose() close output file
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* lflush() flush the output buffer
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*
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* Other Routines
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*
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* cursor(x,y) position cursor at [x,y]
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* cursors() position cursor at [1,24] (saves memory)
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* cl_line(x,y) Clear line at [1,y] and leave cursor at [x,y]
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* cl_up(x,y) Clear screen from [x,1] to current line.
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* cl_dn(x,y) Clear screen from [1,y] to end of display.
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* standout(str) Print the string in standout mode.
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* set_score_output() Called when output should be literally printed.
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** putchar(ch) Print one character in decoded output buffer.
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** flush_buf() Flush buffer with decoded output.
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** init_term() Terminal initialization -- setup termcap info
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** char *tmcapcnv(sd,ss) Routine to convert VT100 \33's to termcap format
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* beep() Routine to emit a beep if enabled (see no-beep in .larnopts)
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*
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* Note: ** entries are available only in termcap mode.
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*/
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#include "header.h"
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#ifdef SYSV /* system III or system V */
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#include <termio.h>
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#define sgttyb termio
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#define stty(_a,_b) ioctl(_a,TCSETA,_b)
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#define gtty(_a,_b) ioctl(_a,TCGETA,_b)
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static int rawflg = 0;
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static char saveeof,saveeol;
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#define doraw(_a) if(!rawflg){++rawflg;saveeof=_a.c_cc[VMIN];saveeol=_a.c_cc[VTIME];}\
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_a.c_cc[VMIN]=1;_a.c_cc[VTIME]=1;_a.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL)
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#define unraw(_a) _a.c_cc[VMIN]=saveeof;_a.c_cc[VTIME]=saveeol;_a.c_lflag |= ICANON|ECHO|ECHOE|ECHOK|ECHONL
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#else not SYSV
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#ifndef BSD
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#define CBREAK RAW /* V7 has no CBREAK */
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#endif
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#define doraw(_a) (_a.sg_flags |= CBREAK,_a.sg_flags &= ~ECHO)
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#define unraw(_a) (_a.sg_flags &= ~CBREAK,_a.sg_flags |= ECHO)
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#include <sgtty.h>
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#endif not SYSV
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#ifndef NOVARARGS /* if we have varargs */
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#include <varargs.h>
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#else NOVARARGS /* if we don't have varargs */
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typedef char *va_list;
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#define va_dcl int va_alist;
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#define va_start(plist) plist = (char *) &va_alist
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#define va_end(plist)
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#define va_arg(plist,mode) ((mode *)(plist += sizeof(mode)))[-1]
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#endif NOVARARGS
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#define LINBUFSIZE 128 /* size of the lgetw() and lgetl() buffer */
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int lfd; /* output file numbers */
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int fd; /* input file numbers */
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static struct sgttyb ttx; /* storage for the tty modes */
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static int ipoint=MAXIBUF,iepoint=MAXIBUF; /* input buffering pointers */
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static char lgetwbuf[LINBUFSIZE]; /* get line (word) buffer */
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/*
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* setupvt100() Subroutine to set up terminal in correct mode for game
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*
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* Attributes off, clear screen, set scrolling region, set tty mode
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*/
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setupvt100()
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{
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clear(); setscroll(); scbr(); /* system("stty cbreak -echo"); */
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}
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/*
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* clearvt100() Subroutine to clean up terminal when the game is over
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*
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* Attributes off, clear screen, unset scrolling region, restore tty mode
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*/
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clearvt100()
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{
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resetscroll(); clear(); sncbr(); /* system("stty -cbreak echo"); */
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}
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/*
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* getchar() Routine to read in one character from the terminal
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*/
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getchar()
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{
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char byt;
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#ifdef EXTRA
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c[BYTESIN]++;
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#endif
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lflush(); /* be sure output buffer is flushed */
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read(0,&byt,1); /* get byte from terminal */
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return(byt);
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}
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/*
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* scbr() Function to set cbreak -echo for the terminal
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*
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* like: system("stty cbreak -echo")
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*/
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scbr()
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{
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gtty(0,&ttx); doraw(ttx); stty(0,&ttx);
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}
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/*
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* sncbr() Function to set -cbreak echo for the terminal
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*
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* like: system("stty -cbreak echo")
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*/
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sncbr()
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{
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gtty(0,&ttx); unraw(ttx); stty(0,&ttx);
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}
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/*
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* newgame() Subroutine to save the initial time and seed rnd()
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*/
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newgame()
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{
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register long *p,*pe;
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for (p=c,pe=c+100; p<pe; *p++ =0);
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time(&initialtime); srand(initialtime);
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lcreat((char*)0); /* open buffering for output to terminal */
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}
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/*
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* lprintf(format,args . . .) printf to the output buffer
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* char *format;
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* ??? args . . .
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*
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* Enter with the format string in "format", as per printf() usage
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* and any needed arguments following it
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* Note: lprintf() only supports %s, %c and %d, with width modifier and left
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* or right justification.
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* No correct checking for output buffer overflow is done, but flushes
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* are done beforehand if needed.
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* Returns nothing of value.
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*/
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#ifdef lint
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/*VARARGS*/
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lprintf(str)
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char *str;
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{
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char *str2;
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str2 = str;
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str = str2; /* to make lint happy */
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}
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/*VARARGS*/
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sprintf(str)
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char *str;
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{
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char *str2;
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str2 = str;
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str = str2; /* to make lint happy */
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}
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#else lint
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/*VARARGS*/
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lprintf(va_alist)
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va_dcl
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{
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va_list ap; /* pointer for variable argument list */
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register char *fmt;
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register char *outb,*tmpb;
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register long wide,left,cont,n; /* data for lprintf */
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char db[12]; /* %d buffer in lprintf */
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va_start(ap); /* initialize the var args pointer */
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fmt = va_arg(ap, char *); /* pointer to format string */
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if (lpnt >= lpend) lflush();
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outb = lpnt;
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for ( ; ; )
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{
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while (*fmt != '%')
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if (*fmt) *outb++ = *fmt++; else { lpnt=outb; return; }
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wide = 0; left = 1; cont=1;
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while (cont)
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switch(*(++fmt))
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{
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case 'd': n = va_arg(ap, long);
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if (n<0) { n = -n; *outb++ = '-'; if (wide) --wide; }
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tmpb = db+11; *tmpb = (char)(n % 10 + '0');
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while (n>9) *(--tmpb) = (char)((n /= 10) % 10 + '0');
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if (wide==0) while (tmpb < db+12) *outb++ = *tmpb++;
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else
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{
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wide -= db-tmpb+12;
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if (left) while (wide-- > 0) *outb++ = ' ';
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while (tmpb < db+12) *outb++ = *tmpb++;
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if (left==0) while (wide-- > 0) *outb++ = ' ';
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}
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cont=0; break;
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case 's': tmpb = va_arg(ap, char *);
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if (wide==0) { while (*outb++ = *tmpb++); --outb; }
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else
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{
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n = wide - strlen(tmpb);
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if (left) while (n-- > 0) *outb++ = ' ';
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while (*outb++ = *tmpb++); --outb;
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if (left==0) while (n-- > 0) *outb++ = ' ';
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}
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cont=0; break;
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case 'c': *outb++ = va_arg(ap, int); cont=0; break;
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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case '8':
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case '9': wide = 10*wide + *fmt - '0'; break;
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case '-': left = 0; break;
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default: *outb++ = *fmt; cont=0; break;
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};
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fmt++;
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}
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va_end(ap);
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}
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#endif lint
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/*
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* lprint(long-integer) send binary integer to output buffer
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* long integer;
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*
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* +---------+---------+---------+---------+
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* | high | | | low |
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* | order | | | order |
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* | byte | | | byte |
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* +---------+---------+---------+---------+
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* 31 --- 24 23 --- 16 15 --- 8 7 --- 0
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*
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* The save order is low order first, to high order (4 bytes total)
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* and is written to be system independent.
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* No checking for output buffer overflow is done, but flushes if needed!
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* Returns nothing of value.
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*/
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lprint(x)
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register long x;
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{
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if (lpnt >= lpend) lflush();
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*lpnt++ = 255 & x; *lpnt++ = 255 & (x>>8);
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*lpnt++ = 255 & (x>>16); *lpnt++ = 255 & (x>>24);
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}
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/*
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* lwrite(buf,len) write a buffer to the output buffer
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* char *buf;
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* int len;
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*
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* Enter with the address and number of bytes to write out
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* Returns nothing of value
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*/
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lwrite(buf,len)
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register char *buf;
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int len;
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{
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register char *str;
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register int num2;
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if (len > 399) /* don't copy data if can just write it */
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{
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#ifdef EXTRA
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c[BYTESOUT] += len;
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#endif
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#ifndef VT100
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for (str=buf; len>0; --len)
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lprc(*str++);
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#else VT100
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lflush();
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write(lfd,buf,len);
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#endif VT100
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}
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else while (len)
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{
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if (lpnt >= lpend) lflush(); /* if buffer is full flush it */
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num2 = lpbuf+BUFBIG-lpnt; /* # bytes left in output buffer */
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if (num2 > len) num2=len;
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str = lpnt; len -= num2;
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while (num2--) *str++ = *buf++; /* copy in the bytes */
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lpnt = str;
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}
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}
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/*
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* long lgetc() Read one character from input buffer
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*
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* Returns 0 if EOF, otherwise the character
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*/
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long lgetc()
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{
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register int i;
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if (ipoint != iepoint) return(inbuffer[ipoint++]);
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if (iepoint!=MAXIBUF) return(0);
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if ((i=read(fd,inbuffer,MAXIBUF))<=0)
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{
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if (i!=0) write(1,"error reading from input file\n",30);
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iepoint = ipoint = 0; return(0);
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}
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ipoint=1; iepoint=i; return(*inbuffer);
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}
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/*
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* long lrint() Read one integer from input buffer
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*
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* +---------+---------+---------+---------+
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* | high | | | low |
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* | order | | | order |
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* | byte | | | byte |
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* +---------+---------+---------+---------+
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* 31 --- 24 23 --- 16 15 --- 8 7 --- 0
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*
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* The save order is low order first, to high order (4 bytes total)
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* Returns the int read
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*/
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long lrint()
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{
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register unsigned long i;
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i = 255 & lgetc(); i |= (255 & lgetc()) << 8;
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i |= (255 & lgetc()) << 16; i |= (255 & lgetc()) << 24;
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return(i);
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}
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/*
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* lrfill(address,number) put input bytes into a buffer
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* char *address;
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* int number;
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*
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* Reads "number" bytes into the buffer pointed to by "address".
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* Returns nothing of value
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*/
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lrfill(adr,num)
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register char *adr;
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int num;
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{
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register char *pnt;
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register int num2;
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while (num)
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{
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if (iepoint == ipoint)
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{
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if (num>5) /* fast way */
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{
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if (read(fd,adr,num) != num)
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write(2,"error reading from input file\n",30);
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num=0;
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}
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else { *adr++ = lgetc(); --num; }
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}
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else
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{
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num2 = iepoint-ipoint; /* # of bytes left in the buffer */
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if (num2 > num) num2=num;
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pnt = inbuffer+ipoint; num -= num2; ipoint += num2;
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while (num2--) *adr++ = *pnt++;
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}
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}
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}
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/*
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* char *lgetw() Get a whitespace ended word from input
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*
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* Returns pointer to a buffer that contains word. If EOF, returns a NULL
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*/
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char *lgetw()
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{
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register char *lgp,cc;
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register int n=LINBUFSIZE,quote=0;
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lgp = lgetwbuf;
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do cc=lgetc(); while ((cc <= 32) && (cc > NULL)); /* eat whitespace */
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for ( ; ; --n,cc=lgetc())
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{
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if ((cc==NULL) && (lgp==lgetwbuf)) return(NULL); /* EOF */
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if ((n<=1) || ((cc<=32) && (quote==0))) { *lgp=NULL; return(lgetwbuf); }
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if (cc != '"') *lgp++ = cc; else quote ^= 1;
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}
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}
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|
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/*
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* char *lgetl() Function to read in a line ended by newline or EOF
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*
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* Returns pointer to a buffer that contains the line. If EOF, returns NULL
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*/
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char *lgetl()
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{
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register int i=LINBUFSIZE,ch;
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register char *str=lgetwbuf;
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for ( ; ; --i)
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{
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if ((*str++ = ch = lgetc()) == NULL)
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{
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if (str == lgetwbuf+1) return(NULL); /* EOF */
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ot: *str = NULL; return(lgetwbuf); /* line ended by EOF */
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}
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if ((ch=='\n') || (i<=1)) goto ot; /* line ended by \n */
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}
|
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}
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|
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/*
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* lcreat(filename) Create a new file for write
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* char *filename;
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*
|
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* lcreat((char*)0); means to the terminal
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|
* Returns -1 if error, otherwise the file descriptor opened.
|
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*/
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lcreat(str)
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char *str;
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{
|
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lpnt = lpbuf; lpend = lpbuf+BUFBIG;
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if (str==NULL) return(lfd=1);
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|
if ((lfd=creat(str,0644)) < 0)
|
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{
|
|
lfd=1; lprintf("error creating file <%s>\n",str); lflush(); return(-1);
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|
}
|
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return(lfd);
|
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}
|
|
|
|
/*
|
|
* lopen(filename) Open a file for read
|
|
* char *filename;
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|
*
|
|
* lopen(0) means from the terminal
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|
* Returns -1 if error, otherwise the file descriptor opened.
|
|
*/
|
|
lopen(str)
|
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char *str;
|
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{
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ipoint = iepoint = MAXIBUF;
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if (str==NULL) return(fd=0);
|
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if ((fd=open(str,0)) < 0)
|
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{
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lwclose(); lfd=1; lpnt=lpbuf; return(-1);
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}
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return(fd);
|
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}
|
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|
|
/*
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|
* lappend(filename) Open for append to an existing file
|
|
* char *filename;
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|
*
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* lappend(0) means to the terminal
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|
* Returns -1 if error, otherwise the file descriptor opened.
|
|
*/
|
|
lappend(str)
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char *str;
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{
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lpnt = lpbuf; lpend = lpbuf+BUFBIG;
|
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if (str==NULL) return(lfd=1);
|
|
if ((lfd=open(str,2)) < 0)
|
|
{
|
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lfd=1; return(-1);
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}
|
|
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;
|
|
struct sgttyb tt;
|
|
extern short ospeed;
|
|
|
|
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();
|
|
};
|
|
|
|
if (gtty(0, &tt) == 0)
|
|
ospeed = tt.sg_ospeed;
|
|
|
|
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';
|
|
}
|