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      1 /*	Id	*/
      2 /*	$NetBSD: wflag.c,v 1.1.1.1 2016/02/09 20:29:13 plunky Exp $	*/
      3 
      4 /*-
      5  * Copyright (c) 2014 Iain Hibbert.
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining a copy
      8  * of this software and associated documentation files (the "Software"), to deal
      9  * in the Software without restriction, including without limitation the rights
     10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     11  * copies of the Software, and to permit persons to whom the Software is
     12  * furnished to do so, subject to the following conditions:
     13  *
     14  * The above copyright notice and this permission notice shall be included in
     15  * all copies or substantial portions of the Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     23  * THE SOFTWARE.
     24  */
     25 
     26 #include <string.h>
     27 
     28 #include "driver.h"
     29 
     30 static struct {
     31 	const char *	name;
     32 	unsigned int	flag;
     33 } Warns[] = {
     34     { "error",				W_CCOM | W_CXXCOM		},
     35     { "truncate",			W_CCOM | W_CXXCOM		},
     36     { "strict-prototypes",		W_CCOM | W_CXXCOM		},
     37     { "missing-prototypes",		W_CCOM | W_CXXCOM		},
     38     { "implicit-int",			W_CCOM | W_CXXCOM | W_ALL	},
     39     { "implicit-function-declaration",	W_CCOM | W_CXXCOM | W_ALL	},
     40     { "shadow",				W_CCOM | W_CXXCOM		},
     41     { "pointer-sign",			W_CCOM | W_CXXCOM | W_ALL	},
     42     { "sign-compare",			W_CCOM | W_CXXCOM		},
     43     { "system-headers",			W_CPP				},
     44     { "unknown-pragmas",		W_CCOM | W_CXXCOM | W_ALL	},
     45     { "unreachable-code",		W_CCOM | W_CXXCOM		},
     46 };
     47 
     48 static int
     49 Wset(unsigned int match)
     50 {
     51 	size_t i;
     52 
     53 	for (i = 0; i < ARRAYLEN(Warns); i++) {
     54 		if ((Warns[i].flag & match) == match)
     55 			Warns[i].flag |= W_SET;
     56 	}
     57 
     58 	return 1;
     59 }
     60 
     61 int
     62 Wflag(const char *str)
     63 {
     64 	size_t i;
     65 	int set, err;
     66 
     67 	if (strcmp("all", str) == 0)
     68 		return Wset(W_ALL);
     69 	if (strcmp("extra", str) == 0)
     70 		return Wset(W_EXTRA);
     71 	if (strcmp("W", str) == 0)
     72 		return Wset(0);
     73 
     74 	set = 1;
     75 	err = 0;
     76 	if (strcmp("error", str) != 0) {
     77 		if (strncmp("no-", str, 3) == 0) {
     78 			str += 3;
     79 			set = 0;
     80 		}
     81 
     82 		if (strncmp("error=", str, 6) == 0) {
     83 			str += 6;
     84 			err = 1;
     85 		}
     86 	}
     87 
     88 	for (i = 0; i < ARRAYLEN(Warns); i++) {
     89 		if (strcmp(Warns[i].name, str) == 0) {
     90 			if (set)
     91 				Warns[i].flag |= W_SET;
     92 			else
     93 				Warns[i].flag &= ~W_SET;
     94 
     95 			if (err)
     96 				Warns[i].flag |= W_ERR;
     97 			else
     98 				Warns[i].flag &= ~W_ERR;
     99 
    100 			return 1;
    101 		}
    102 	}
    103 
    104 	return 0;
    105 }
    106 
    107 void
    108 Wflag_add(list_t *l, unsigned int match)
    109 {
    110 	size_t i;
    111 
    112 	for (i = 0; i < ARRAYLEN(Warns); i++) {
    113 		if ((Warns[i].set || Warns[i].err)
    114 		    && (match & Warns[i].flag)) {
    115 			list_add(l, "-W%s%s%s",
    116 			    (Warns[i].flag & W_SET ? "" : "no-"),
    117 			    (Warns[i].flag & W_ERR ? "error=" : ""),
    118 			    Warns[i].name);
    119 		}
    120 	}
    121 }
    122