702 lines
12 KiB
Plaintext
702 lines
12 KiB
Plaintext
agetc.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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agetc(ptr)
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register FILE *ptr;
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{
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register int c;
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top:
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if ((c = getc(ptr)) != EOF) {
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switch (c &= 127) {
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case 0x1a:
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ptr->_flags |= _EOF;
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return EOF;
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case '\r':
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case 0:
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goto top;
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}
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}
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return c;
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}
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aputc.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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aputc(c,ptr)
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register int c; register FILE *ptr;
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{
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if (c == '\n')
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if (putc('\r',ptr) == EOF)
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return EOF;
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return putc(c,ptr);
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}
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fdopen.c
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/* Copyright (C) 1984 by Manx Software Systems */
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#include "stdio.h"
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FILE *
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fdopen(fd,mode)
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char *mode;
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{
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register FILE *fp;
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FILE *newstream();
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if ((fp = newstream()) == NULL)
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return NULL;
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fp->_unit = fd;
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fp->_flags = _BUSY;
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return fp;
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}
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fgets.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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char *fgets(s, n, fp)
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char *s; FILE *fp;
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{
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register c;
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register char *cp;
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cp = s;
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while (--n > 0 && (c = agetc(fp)) != EOF) {
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*cp++ = c;
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if (c == '\n')
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break;
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}
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*cp = 0;
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if (c == EOF && cp == s)
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return NULL;
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return(s);
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}
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fopen.c
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/* Copyright (C) 1981,1982,1983,1984 by Manx Software Systems */
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#include "stdio.h"
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#include "fcntl.h"
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#include "errno.h"
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extern int errno;
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static struct modes {
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char fmode[3];
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int omode;
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} modes[] = {
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"r", O_RDONLY,
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"r+", O_RDWR,
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"w", (O_WRONLY|O_CREAT|O_TRUNC),
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"w+", (O_RDWR|O_CREAT|O_TRUNC),
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"a", (O_WRONLY|O_CREAT|O_APPEND),
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"a+", (O_RDWR|O_CREAT|O_APPEND),
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"x", (O_WRONLY|O_CREAT|O_EXCL),
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"x+", (O_RDWR|O_CREAT|O_EXCL),
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"", 0,
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};
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FILE *
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fopen(name,mode)
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char *name,*mode;
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{
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register FILE *fp;
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FILE *newstream(), *freopen();
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if ((fp = newstream()) == NULL)
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return NULL;
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return freopen(name, mode, fp);
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}
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FILE *
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freopen(name, mode, fp)
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char *name,*mode; FILE *fp;
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{
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register struct modes *mp;
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register int fd;
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fclose(fp);
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for (mp = modes ; ; ++mp) {
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if (*mp->fmode == 0) {
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errno = EINVAL;
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return NULL;
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}
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if (strcmp(mp->fmode, mode) == 0)
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break;
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}
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/*
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Don't try to optimize the next 3 lines. Since _unit is a char,
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assigning to it in the if statement will cause the -1 test to fail
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on unsigned char machines.
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*/
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if ((fd = open(name, mp->omode)) == -1)
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return (NULL);
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fp->_unit = fd;
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fp->_flags = _BUSY;
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return fp;
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}
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fprintf.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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static FILE *Stream;
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fprintf(stream,fmt,args)
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FILE *stream; char *fmt; unsigned args;
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{
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int fpsub();
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Stream = stream;
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return format(fpsub,fmt,&args);
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}
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static
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fpsub(c)
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{
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return aputc(c,Stream);
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}
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fputs.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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fputs(s,fp)
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register char *s;
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FILE *fp;
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{
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while ( *s )
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if (aputc(*s++,fp) == EOF)
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return(EOF);
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return 0;
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}
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fread.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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fread(buffer,size,number,stream)
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register char *buffer; unsigned size; int number;
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FILE *stream;
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{
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int total;
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register int c,i;
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for ( total = 0 ; total < number ; ++total ) {
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for ( i = size ; i ; --i ) {
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if ( (c = getc(stream)) == EOF )
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return total;
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*buffer++ = c;
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}
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}
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return total;
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}
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fscanf.c
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/* Copyright (C) 1982 by Manx Software Systems */
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#include "stdio.h"
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static int scnlast;
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static FILE *scnfp;
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fscanf(fp, fmt, args)
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FILE *fp; char *fmt; int *args;
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{
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int gchar();
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scnfp = fp;
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scnlast = 0;
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return scanfmt(gchar, fmt, &args);
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}
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static gchar(what)
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{
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if (what == 0) {
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if (feof(scnfp))
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scnlast = EOF;
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else
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scnlast = agetc(scnfp);
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} else
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scnlast = ungetc(scnlast, scnfp);
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return scnlast;
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}
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fseek.c
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/* Copyright (c) 1981, 1982 by Manx Software Systems */
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#include "stdio.h"
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fseek(fp,pos,mode)
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register FILE *fp;
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long pos;
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{
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register int i;
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long curpos, lseek();
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fp->_flags &= ~_EOF;
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if (fp->_flags & _DIRTY) {
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if (flsh_(fp,-1))
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return EOF;
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} else if (mode == 1 && fp->_bp)
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pos -= fp->_bend - fp->_bp;
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fp->_bp = fp->_bend = NULL;
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if (lseek(fp->_unit, pos, mode) < 0)
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return EOF;
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return 0;
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}
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long ftell(fp)
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register FILE *fp;
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{
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long pos, lseek();
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pos = lseek(fp->_unit, 0L, 1); /* find out where we are */
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if (fp->_flags & _DIRTY)
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pos += fp->_bp - fp->_buff;
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else if (fp->_bp)
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pos -= fp->_bend - fp->_bp;
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return pos;
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}
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fwrite.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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fwrite(buffer,size,number,stream)
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register char *buffer; unsigned size,number;
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FILE *stream;
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{
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register unsigned i,max;
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max = size * number;
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for ( i = 0 ; i < max ; ++i ) {
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if ( putc(*buffer++,stream) == EOF )
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return 0;
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}
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return number;
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}
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getbuff.c
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/* Copyright (C) 1983 by Manx Software Systems */
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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FILE Cbuffs[MAXSTREAM] = {
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{ 0,0,0, _BUSY,0,0,1 },
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{ 0,0,0, _BUSY,1,0,1 },
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{ 0,0,0, _BUSY,2,0,1 },
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};
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FILE *
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newstream()
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{
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register FILE *fp;
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fp = Cbuffs;
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while (fp->_flags)
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if (++fp >= &Cbuffs[MAXSTREAM])
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return NULL;
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return fp;
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}
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getbuff(ptr)
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register FILE *ptr;
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{
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char *buffer, *malloc();
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if (isatty(ptr->_unit)) {
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smlbuff:
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ptr->_buflen = 1;
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ptr->_buff = &ptr->_bytbuf;
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return;
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}
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if ((buffer = malloc(BUFSIZ)) == NULL)
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goto smlbuff;
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ptr->_buflen = BUFSIZ;
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ptr->_flags |= _ALLBUF;
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ptr->_buff = buffer;
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return;
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}
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getc.c
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/* Copyright (C) 1982 by Manx Software Systems */
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#include "stdio.h"
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getc(ptr)
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register FILE *ptr;
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{
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register int len;
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if (ptr->_bp >= ptr->_bend) {
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if (ptr->_flags&(_EOF|_IOERR))
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return EOF;
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ptr->_flags &= ~_DIRTY;
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if (ptr->_buff == NULL)
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getbuff(ptr);
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if ((len = read(ptr->_unit,ptr->_buff,ptr->_buflen)) <= 0) {
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ptr->_flags |= len==0 ? _EOF : _IOERR;
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return EOF;
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}
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ptr->_bend = (ptr->_bp = ptr->_buff) + len;
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}
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return *ptr->_bp++ & 255;
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}
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getchar.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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#undef getchar
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getchar()
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{
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return agetc(stdin);
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}
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gets.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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#undef getchar
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char *gets(line)
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char *line;
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{
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register char *cp;
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register int i;
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cp = line;
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while ((i = getchar()) != EOF && i != '\n')
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*cp++ = i;
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*cp = 0;
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if (i == EOF && cp == line)
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return NULL;
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return line;
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}
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getw.c
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/* Copyright (C) 1982 by Manx Software Systems */
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#include "stdio.h"
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getw(stream)
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FILE *stream;
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{
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register int x1,x2;
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if ((x1 = getc(stream)) == EOF || (x2 = getc(stream)) == EOF)
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return EOF;
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return (x2<<8) | x1;
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}
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printf.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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printf(fmt,args)
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char *fmt; unsigned args;
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{
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extern int putchar();
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format(putchar,fmt,&args);
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}
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putc.c
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/* Copyright (C) 1981,1982,1983,1984 by Manx Software Systems */
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#include "stdio.h"
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putc(c,ptr)
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int c; register FILE *ptr;
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{
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if (ptr->_bp >= ptr->_bend)
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return flsh_(ptr,c&0xff);
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return (*ptr->_bp++ = c) & 0xff;
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}
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static closall() /* called by exit to close any open files */
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{
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register FILE *fp;
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for ( fp = Cbuffs ; fp < Cbuffs+MAXSTREAM ; )
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fclose(fp++);
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}
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fclose(ptr)
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register FILE *ptr;
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{
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register int err;
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err = 0;
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if (!ptr)
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return -1;
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if ( ptr->_flags ) {
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if (ptr->_flags&_DIRTY) /* if modifed flush buffer */
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err = flsh_(ptr,-1);
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err |= close(ptr->_unit);
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if (ptr->_flags&_ALLBUF)
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free(ptr->_buff);
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if (ptr->_flags&_TEMP) { /* temp file, delete it */
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unlink(ptr->_tmpname);
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free(ptr->_tmpname);
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}
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}
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ptr->_buff =
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ptr->_bend = /* nothing in buffer */
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ptr->_bp = 0;
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ptr->_flags = 0;
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return err;
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}
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flsh_(ptr,data)
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register FILE *ptr;
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{
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register int size;
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extern int (*cls_)();
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cls_ = closall;
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if (ptr->_flags & _IOERR)
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return EOF;
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if (ptr->_flags & _DIRTY) {
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size = ptr->_bp - ptr->_buff;
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if (write(ptr->_unit, ptr->_buff, size) != size) {
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ioerr:
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ptr->_flags |= _IOERR;
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ptr->_bend = ptr->_bp = NULL;
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return EOF;
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}
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}
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if (data == -1) {
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ptr->_flags &= ~_DIRTY;
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ptr->_bend = ptr->_bp = NULL;
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return 0;
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}
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if (ptr->_buff == NULL)
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getbuff(ptr);
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if (ptr->_buflen == 1) { /* unbuffered I/O */
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if (write(ptr->_unit, &data, 1) != 1)
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goto ioerr;
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return data;
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}
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ptr->_bp = ptr->_buff;
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ptr->_bend = ptr->_buff + ptr->_buflen;
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ptr->_flags |= _DIRTY;
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return (*ptr->_bp++ = data) & 0xff;
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}
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putchar.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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#undef putchar
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putchar(c)
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{
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return aputc(c,stdout);
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}
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puterr.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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puterr(c)
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{
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return aputc(c, stderr);
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}
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puts.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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puts(str)
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register char *str;
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{
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while (*str)
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if (putchar(*str++) == -1)
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return -1;
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return putchar('\n');
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}
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putw.c
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/* Copyright (C) 1981,1982 by Manx Software Systems */
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#include "stdio.h"
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putw(w,stream)
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register unsigned w;
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FILE *stream;
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{
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if ( putc(w,stream) < 0 )
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return EOF;
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else if ( putc((w>>8),stream) < 0 )
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return EOF;
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return w;
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}
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scanf.c
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/* Copyright (C) 1982 by Manx Software Systems */
|
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#include "stdio.h"
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|
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static int scnlast;
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|
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scanf(fmt, args)
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char *fmt; int *args;
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{
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int gchar();
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scnlast = 0;
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return scanfmt(gchar, fmt, &args);
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}
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static gchar(what)
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{
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if (what == 0) {
|
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if (feof(stdin))
|
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scnlast = EOF;
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else
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scnlast = agetc(stdin);
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} else
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scnlast = ungetc(scnlast, stdin);
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return scnlast;
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}
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|
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setbuf.c
|
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/* Copyright (C) 1981,1982 by Manx Software Systems and Thomas Fenwick */
|
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#include "stdio.h"
|
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|
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setbuf(stream, buffer)
|
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register FILE *stream; char *buffer;
|
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{
|
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if (stream->_buff)
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return;
|
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if (buffer) {
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stream->_buff = buffer;
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stream->_buflen = BUFSIZ;
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} else {
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stream->_buff = &stream->_bytbuf;
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stream->_buflen = 1;
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}
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}
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|
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tmpfile.c
|
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#include <stdio.h>
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|
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/* returns a pointer for a temp file which is automatically deleted
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when the program exits; the file is opened for update */
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|
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FILE *
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tmpfile ()
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{
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register char *cp;
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register FILE *fp;
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char *tmpnam(), *malloc();
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cp = tmpnam (NULL);
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if ( (fp = fopen (cp, "w+")) == NULL )
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perror (cp);
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else {
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if ((fp->_tmpname = malloc(strlen(cp)+1)) == NULL) {
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fclose(fp);
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unlink(cp);
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return NULL;
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}
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strcpy(fp->_tmpname,cp);
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fp->_flags |= _TEMP;
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}
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return fp;
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}
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tmpnam.c
|
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#include <stdio.h>
|
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|
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static char work[] = "AAAAA";
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|
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char *
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tmpnam(s)
|
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char *s;
|
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{
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static char tmpbuf[L_tmpnam];
|
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register char *cp;
|
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|
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if (s == NULL)
|
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s = tmpbuf;
|
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for (;;) {
|
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strcpy(s,P_tmpdir);
|
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strcat(s,work);
|
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strcat(s,"XXX.XXX");
|
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for (cp = work ; *cp ; ++cp)
|
||
if (*cp == 'Z')
|
||
*cp = 'A';
|
||
else {
|
||
++*cp;
|
||
break;
|
||
}
|
||
if (mktemp(s))
|
||
break;
|
||
}
|
||
return s;
|
||
}
|
||
mktemp.c
|
||
#ifdef DOS11
|
||
#include <fcntl.h>
|
||
#endif
|
||
|
||
char *
|
||
mktemp(template)
|
||
char *template;
|
||
{
|
||
register char *cp;
|
||
register unsigned val;
|
||
extern unsigned _dsval;
|
||
#ifdef DOS11
|
||
int file;
|
||
#endif
|
||
|
||
cp = template;
|
||
cp += strlen(cp);
|
||
for (val = _dsval ; ; )
|
||
if (*--cp == 'X') {
|
||
*cp = val%10 + '0';
|
||
val /= 10;
|
||
} else if (*cp != '.')
|
||
break;
|
||
|
||
if (*++cp == '.') /* allow for "abcd.XXX" type file names */
|
||
++cp;
|
||
if (*cp != 0) {
|
||
*cp = 'A';
|
||
#ifdef DOS11
|
||
while ((file = open(template, O_RDONLY)) >= 0) {
|
||
close(file);
|
||
#else
|
||
while (access(template, 0) == 0) {
|
||
#endif
|
||
if (*cp == 'Z') {
|
||
*template = 0;
|
||
break;
|
||
}
|
||
++*cp;
|
||
}
|
||
} else {
|
||
#ifdef DOS11
|
||
if ((file = open(template, O_RDONLY)) >= 0) {
|
||
close(file);
|
||
#else
|
||
if (access(template, 0) == 0) {
|
||
#endif
|
||
*template = 0;
|
||
}
|
||
}
|
||
return template;
|
||
}
|
||
ungetc.c
|
||
/* Copyright (c) 1981, 1982 by Manx Software Systems */
|
||
#include "stdio.h"
|
||
|
||
ungetc(c,ptr)
|
||
int c; register FILE *ptr;
|
||
{
|
||
if (c == EOF || ptr->_bp <= ptr->_buff)
|
||
return EOF;
|
||
*--ptr->_bp = c;
|
||
return c;
|
||
}
|
||
|
||
perror.c
|
||
#include <stdio.h>
|
||
#include <errno.h>
|
||
|
||
perror (s)
|
||
char *s;
|
||
{
|
||
if (errno < 0 || errno > sys_nerr)
|
||
return -1;
|
||
if (s)
|
||
fprintf (stderr, "%s: ", s);
|
||
fprintf (stderr, "%s\n", sys_errlist[errno]);
|
||
return 0;
|
||
}
|
||
|