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heirloom base
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sus.c (2748B)

      1 /*
      2  * grep - search a file for a pattern
      3  *
      4  * Gunnar Ritter, Freiburg i. Br., Germany, April 2001.
      5  */
      6 /*
      7  * Copyright (c) 2003 Gunnar Ritter
      8  *
      9  * This software is provided 'as-is', without any express or implied
     10  * warranty. In no event will the authors be held liable for any damages
     11  * arising from the use of this software.
     12  *
     13  * Permission is granted to anyone to use this software for any purpose,
     14  * including commercial applications, and to alter it and redistribute
     15  * it freely, subject to the following restrictions:
     16  *
     17  * 1. The origin of this software must not be misrepresented; you must not
     18  *    claim that you wrote the original software. If you use this software
     19  *    in a product, an acknowledgment in the product documentation would be
     20  *    appreciated but is not required.
     21  *
     22  * 2. Altered source versions must be plainly marked as such, and must not be
     23  *    misrepresented as being the original software.
     24  *
     25  * 3. This notice may not be removed or altered from any source distribution.
     26  */
     27 
     28 /*	Sccsid @(#)sus.c	1.24 (gritter) 5/29/05>	*/
     29 
     30 /*
     31  * Code for POSIX.2 command version only.
     32  */
     33 
     34 #include	<sys/types.h>
     35 #include	<stdio.h>
     36 #include	<stdlib.h>
     37 #include	<string.h>
     38 #include	"alloc.h"
     39 #include	"grep.h"
     40 
     41 #if defined (SU3)
     42 int		sus = 3;
     43 #if __GNUC__ >= 3 && __GNUC_MINOR__ >= 4 || __GNUC__ >= 4
     44 #define	USED	__attribute__ ((used))
     45 #elif defined __GNUC__
     46 #define	USED	__attribute__ ((unused))
     47 #else
     48 #define	USED
     49 #endif
     50 static const char su3id[] USED = "@(#)grep_su3.sl	1.24 (gritter) 5/29/05";
     51 #else
     52 int		sus = 1;
     53 #endif
     54 char		*stdinmsg = "(standard input)";
     55 
     56 /*
     57  * Usage message.
     58  */
     59 void
     60 usage(void)
     61 {
     62 	char *sEF, *sq, *ss;
     63 
     64 	if (*progname == 'f') {
     65 		sq = "";
     66 		ss = "";
     67 	} else {
     68 		sq = "|-q";
     69 		ss = "s";
     70 	}
     71 	if (*progname == 'f' || *progname == 'e')
     72 		sEF = "";
     73 	else
     74 		sEF = "[-E|-F] ";
     75 	fprintf(stderr, "%s: Usage:\n\
     76      %s[-c|-l%s] [-bhin%svx] pattern [file ...]\n\
     77      %s[-c|-l%s] [-bhin%svx] -e pattern ... [-f file ...] [file ...]\n\
     78      %s[-c|-l%s] [-bhin%svx] -f file ... [-e pattern ...] [file ...]\n",
     79  		progname,
     80 		sEF, sq, ss,
     81 		sEF, sq, ss,
     82 		sEF, sq, ss);
     83 	exit(2);
     84 }
     85 
     86 void
     87 misop(void)
     88 {
     89 	usage();
     90 }
     91 
     92 void
     93 rc_error(struct expr *e, int rerror)
     94 {
     95 	char *regerrs;
     96 	size_t resz;
     97 
     98 	resz = regerror(rerror, e->e_exp, NULL, 0) + 1;
     99 	regerrs = smalloc(resz);
    100 	regerror(rerror, e->e_exp, regerrs, resz);
    101 	fprintf(stderr, "%s: RE error: %s\n", progname, regerrs);
    102 	exit(2);
    103 }
    104 
    105 void
    106 init(void)
    107 {
    108 	switch (*progname) {
    109 	case 'e':
    110 		Eflag = 2;
    111 		rc_select();
    112 		options = "EFbce:f:hilnqrRsvxyz";
    113 		break;
    114 	case 'f':
    115 		Fflag = 2;
    116 		ac_select();
    117 		options = "Fbce:f:hilnqrRsvxyz";
    118 		break;
    119 	default:
    120 		rc_select();
    121 		options = "EFbce:f:hilnqrRsvwxyz";
    122 	}
    123 }
    124 
    125 void
    126 eg_select(void)
    127 {
    128 }
    129 
    130 void
    131 st_select(void)
    132 {
    133 }