USAGE.C
上传用户:hlzzc88
上传日期:2007-01-06
资源大小:220k
文件大小:2k
- /*
- * 68K/386 32-bit C compiler.
- *
- * copyright (c) 1997, David Lindauer
- *
- * This compiler is intended for educational use. It may not be used
- * for profit without the express written consent of the author.
- *
- * It may be freely redistributed, as long as this notice remains intact
- * and either the original sources or derived sources
- * are distributed along with any executables derived from the originals.
- *
- * The author is not responsible for any damages that may arise from use
- * of this software, either idirect or consequential.
- *
- * v1.35 March 1997
- * David Lindauer, gclind01@starbase.spd.louisville.edu
- *
- * Credits to Mathew Brandt for original K&R C compiler
- *
- */
- /*
- * Display usage information and exit.
- */
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
- #include <stdarg.h>
- #include "cmdline.h"
- /*
- * Main program must define the usage text
- */
- extern char *usage_text;
- /* Program banner */
- void banner( char *fmt, ... )
- {
- va_list argptr;
- putc('n', stdout);
- va_start( argptr, fmt);
- vprintf( fmt, argptr);
- va_end(argptr);
- putc('n', stdout);
- putc('n', stdout);
- }
- /* Print usage info */
- void usage( char *prog_name)
- {
- char *short_name;
- char *extension;
- short_name = strrchr(prog_name, '\' );
- if (short_name == NULL)
- short_name = strrchr( prog_name, '/' );
- if (short_name == NULL)
- short_name = strrchr( prog_name, ':' );
- if (short_name)
- short_name++;
- else
- short_name = prog_name;
- extension = strrchr( short_name, '.');
- if (extension != NULL)
- *extension = ' ';
- printf("nUsage: %s %sn", short_name, usage_text);
- exit( 1 );
- }