diff options
Diffstat (limited to 'libc/stdio1/scanf.c')
| -rw-r--r-- | libc/stdio1/scanf.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/libc/stdio1/scanf.c b/libc/stdio1/scanf.c deleted file mode 100644 index 81900a1..0000000 --- a/libc/stdio1/scanf.c +++ /dev/null @@ -1,151 +0,0 @@ -/* scanf.c for limited Linux libc - Copyright (C) 1996 Joel N. Weber II <nemo@koa.iolani.honolulu.hi.us> - - This program is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License - as published by the Free Software Foundation; either version 2 - of the License, or (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -/* This scanf code was derived from my printf code, which in turn was - * derived from Alan Cox's printk. It was tested by [no one so far...] - */ - -/* Disclaimer: I haven't even THOUGHT about testing this. If you do decide - * to be brave and test it, and it doesn't work, you have the following - * options: - * o Send me mail telling me it doesn't work, which I will ignore - * since I already knew that. - * o Fix it yourself - * o isolate the problem and send it to the list, and maybe - * I'll fix it - */ - -/* BTW, the above comment may be destroyed once this has been tested. It's - * not nessisary for my great great grandchildren to see it when they - * take Ancient Linux History... - */ - -/* Incidentally, if it doesn't work, it may well be because I never bothered - * to learn how to use scanf()...I briefly tried it for the usaco qualification - * round, but had some wierd problems...ask me after mid February...BTW the - * problems had nothing to do with scanf(); it was still broken (hopelessly) - * when I went to getchar(). - */ - -/* Note, too that the current version probably assumes some things with - * variable argument handling that it shouldn't. Don't expect this to - * work on a 386 in 32 bit mode, don't expect this to work on a Z80, - * or anything other than an 8086. In fact, don't expect it to even - * work on an 8086 ;-) - */ - -/* One of these days the headers will work painlessly... */ -/* #include <linuxmt/types.h> */ -/* #include <linuxmt/fcntl.h> */ -#include "stdio.h" - -/* note that we assume base == 10... */ -static int numin(int *num, int base, FILE *stream, int c) -{ - if ((c < '0') || (c > '9')) return 0; - *num = 0; - while ((c >= '0') && (c <= '9')) { - *num = *num * base + c - '0'; - c = getc(stream); - } - ungetc(c, stream); -} - -/* currently, the h/l specifications are ignored */ -static int internal_scanf(stream,fmt,a1) -FILE *stream; -char *fmt; -int *a1; -{ - unsigned char *p=(char *)a1; - char c; - int inc; - int count = 0; - - while(c=*fmt++) - { - do { - inc = getc(stream); - } while ((inc == ' ') || (inc == '\t') || (inc == '\n')); - - if ((c == '\n') || (c == '\t') || (c == ' ')) - ; - else if (c!='%') { - if (c != inc) { - ungetc(inc, stream); - return count; - } - } else { - int len=2; - c=*fmt++; - if(c=='h') c=*fmt++; - else if(c=='l') c=*fmt++; - - switch(c) - { - case 'x': - if (numin(p, 16, stream, inc)) count++; - else return count; - p+=2; - break; - case 'd': - if (numin(p, 10, stream, inc)) count++; - else return count; - p+=2; - break; - case 's': - { - char *cp=*((char **)p); - p+=sizeof(char *); - while(*cp) - putc(cp++, stream); - while ((inc != ' ') && (inc != '\t') - && (inc != '\n') && (inc != EOF)) { - *cp++ = inc; - inc = getc(stream); - } - ungetc(inc, stream); - break; - } - case 'c': - *p++ = inc; - p++; - break; - default: - putc('?', stream); - } - } - } - return count; -} - - -int fscanf(stream,fmt,a1) -FILE *stream; -char *fmt; -int a1; -{ - return internal_fscanf(stream,fmt,&a1); -} - -int scanf(fmt,a1) -char *fmt; -int a1; -{ - return internal_fscanf(stdout,fmt,&a1); -} |