1272343Sngie/* $NetBSD: h_getopt_long.c,v 1.1 2011/01/01 23:56:49 pgoyette Exp $ */ 2272343Sngie 3272343Sngie/*- 4272343Sngie * Copyright (c) 2007 The NetBSD Foundation, Inc. 5272343Sngie * All rights reserved. 6272343Sngie * 7272343Sngie * This code is derived from software contributed to The NetBSD Foundation 8272343Sngie * by Christos Zoulas. 9272343Sngie * 10272343Sngie * Redistribution and use in source and binary forms, with or without 11272343Sngie * modification, are permitted provided that the following conditions 12272343Sngie * are met: 13272343Sngie * 1. Redistributions of source code must retain the above copyright 14272343Sngie * notice, this list of conditions and the following disclaimer. 15272343Sngie * 2. Redistributions in binary form must reproduce the above copyright 16272343Sngie * notice, this list of conditions and the following disclaimer in the 17272343Sngie * documentation and/or other materials provided with the distribution. 18272343Sngie * 19272343Sngie * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20272343Sngie * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21272343Sngie * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22272343Sngie * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23272343Sngie * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24272343Sngie * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25272343Sngie * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26272343Sngie * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27272343Sngie * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28272343Sngie * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29272343Sngie * POSSIBILITY OF SUCH DAMAGE. 30272343Sngie */ 31272343Sngie 32272343Sngie#include <ctype.h> 33272343Sngie#include <err.h> 34272343Sngie#include <getopt.h> 35272343Sngie#include <stdio.h> 36272343Sngie#include <string.h> 37272343Sngie#include <stdlib.h> 38272343Sngie#include <unistd.h> 39276478Sngie#ifdef __FreeBSD__ 40314817Sngie/* 41314817Sngie * Needed to avoid libutil.h pollution in stdio.h, which causes grief with 42314817Sngie * with hexdump(3) in lib/libc/db/h_hash.c 43314817Sngie */ 44276478Sngie#include <libutil.h> 45276478Sngie#endif 46272343Sngie 47272343Sngie#define SKIPWS(p) while (isspace((int)(*p))) p++ 48272343Sngie#define WS "\t\n " 49272343Sngie 50272343Sngieint 51272343Sngiemain(int argc, char *argv[]) 52272343Sngie{ 53272343Sngie size_t len, lineno = 0; 54272343Sngie char *line, *eptr, *longopt, *ptr, *optstring = NULL, *result = NULL; 55272343Sngie char buf[1024]; 56272343Sngie char *args[128]; 57272343Sngie char arg[256]; 58272343Sngie int nargs = -1; 59272343Sngie int c; 60272343Sngie int nlongopts = 0; 61272343Sngie int maxnlongopts = 0; 62272343Sngie int *longopt_flags = NULL; 63272343Sngie struct option *longopts = NULL; 64272343Sngie 65272343Sngie while ((line = fparseln(stdin, &len, &lineno, NULL, 0)) != NULL) { 66272343Sngie if (strncmp(line, "optstring:", 10) == 0) { 67272343Sngie if (optstring) 68272343Sngie free(optstring); 69272343Sngie optstring = strtok(&line[11], WS); 70272343Sngie if (optstring == NULL) 71272343Sngie errx(1, "missing optstring at line %ld", 72272343Sngie (unsigned long)lineno); 73272343Sngie optstring = strdup(optstring); 74272343Sngie } else if (strncmp(line, "longopts:", 9) == 0) { 75272343Sngie if (longopts) { 76272343Sngie int i; 77272343Sngie for (i = 0; i < nlongopts; i++) 78272343Sngie if (longopts[i].name != NULL) 79272343Sngie free(__UNCONST(longopts[i].name)); 80272343Sngie free(longopts); 81272343Sngie } 82272343Sngie if (longopt_flags) 83272343Sngie free(longopt_flags); 84272343Sngie nlongopts = 0; 85272343Sngie ptr = strtok(&line[10], WS); 86272343Sngie if (ptr == NULL) 87272343Sngie errx(1, "missing longopts at line %ld", 88272343Sngie (unsigned long)lineno); 89272343Sngie maxnlongopts = strtoul(ptr, &eptr, 10); 90272343Sngie if (*eptr != '\0') 91272343Sngie warnx("garbage in longopts at line %ld", 92272343Sngie (unsigned long)lineno); 93272343Sngie maxnlongopts++; /* space for trailer */ 94272343Sngie longopts = 95272343Sngie (struct option *)calloc(sizeof(struct option), 96272343Sngie maxnlongopts); 97272343Sngie if (longopts == NULL) 98272343Sngie err(1, "calloc"); 99272343Sngie longopt_flags = (int *)calloc(sizeof(int), maxnlongopts); 100272343Sngie if (longopt_flags == NULL) 101272343Sngie err(1, "calloc"); 102272343Sngie } else if (strncmp(line, "longopt:", 8) == 0) { 103272343Sngie if (longopts == NULL) 104272343Sngie errx(1, "longopt: without longopts at line %ld", 105272343Sngie (unsigned long)lineno); 106272343Sngie if (nlongopts >= maxnlongopts) 107272343Sngie errx(1, "longopt: too many options at line %ld", 108272343Sngie (unsigned long)lineno); 109272343Sngie /* name */ 110272343Sngie ptr = &line[9]; 111272343Sngie SKIPWS(ptr); 112272343Sngie longopt = strsep(&ptr, ","); 113272343Sngie if (longopt == NULL) 114272343Sngie errx(1, "missing longopt at line %ld", 115272343Sngie (unsigned long)lineno); 116272343Sngie longopts[nlongopts].name = strdup(longopt); 117272343Sngie /* has_arg */ 118272343Sngie SKIPWS(ptr); 119272343Sngie longopt = strsep(&ptr, ","); 120272343Sngie if (*longopt != '\0') { 121272343Sngie if (strncmp(longopt, "0", 1) == 0 || 122272343Sngie strncmp(longopt, "no_argument", 2) == 0) 123272343Sngie longopts[nlongopts].has_arg = no_argument; 124272343Sngie else if (strncmp(longopt, "1", 1) == 0 || 125272343Sngie strncmp(longopt, "required_argument", 8) == 0) 126272343Sngie longopts[nlongopts].has_arg = required_argument; 127272343Sngie else if (strncmp(longopt, "2", 1) == 0 || 128272343Sngie strncmp(longopt, "optional_argument", 8) == 0) 129272343Sngie longopts[nlongopts].has_arg = optional_argument; 130272343Sngie else 131272343Sngie errx(1, "unknown has_arg %s at line %ld", 132272343Sngie longopt, (unsigned long)lineno); 133272343Sngie } 134272343Sngie /* flag */ 135272343Sngie SKIPWS(ptr); 136272343Sngie longopt = strsep(&ptr, ","); 137272343Sngie if (*longopt != '\0' && 138272343Sngie strncmp(longopt, "NULL", 4) != 0) 139272343Sngie longopts[nlongopts].flag = &longopt_flags[nlongopts]; 140272343Sngie /* val */ 141272343Sngie SKIPWS(ptr); 142272343Sngie longopt = strsep(&ptr, ","); 143272343Sngie if (*longopt == '\0') 144272343Sngie errx(1, "missing val at line %ld", 145272343Sngie (unsigned long)lineno); 146272343Sngie if (*longopt != '\'') { 147272343Sngie longopts[nlongopts].val = 148272343Sngie (int)strtoul(longopt, &eptr, 10); 149272343Sngie if (*eptr != '\0') 150272343Sngie errx(1, "invalid val at line %ld", 151272343Sngie (unsigned long)lineno); 152272343Sngie } else 153272343Sngie longopts[nlongopts].val = (int)longopt[1]; 154272343Sngie nlongopts++; 155272343Sngie } else if (strncmp(line, "args:", 5) == 0) { 156272343Sngie for (; nargs >= 0; nargs--) { 157272343Sngie if (args[nargs] != NULL) 158272343Sngie free(args[nargs]); 159272343Sngie } 160272343Sngie args[nargs = 0] = strtok(&line[6], WS); 161272343Sngie if (args[nargs] == NULL) 162272343Sngie errx(1, "Missing args"); 163272343Sngie 164272343Sngie args[nargs] = strdup(args[nargs]); 165272343Sngie while ((args[++nargs] = strtok(NULL, WS)) != NULL) 166272343Sngie args[nargs] = strdup(args[nargs]); 167272343Sngie } else if (strncmp(line, "result:", 7) == 0) { 168272343Sngie int li; 169272343Sngie buf[0] = '\0'; 170272343Sngie optind = optreset = 1; 171272343Sngie if (result) 172272343Sngie free(result); 173272343Sngie result = strtok(&line[8], WS); 174272343Sngie if (result == NULL) 175272343Sngie errx(1, "missing result at line %ld", 176272343Sngie (unsigned long)lineno); 177272343Sngie if (optstring == NULL) 178272343Sngie errx(1, "result: without optstring"); 179272343Sngie if (longopts == NULL || nlongopts == 0) 180272343Sngie errx(1, "result: without longopts"); 181272343Sngie result = strdup(result); 182272343Sngie if (nargs == -1) 183272343Sngie errx(1, "result: without args"); 184272343Sngie li = -2; 185272343Sngie while ((c = getopt_long(nargs, args, optstring, 186272343Sngie longopts, &li)) != -1) { 187272343Sngie if (c == ':') 188272343Sngie errx(1, "`:' found as argument char"); 189272343Sngie if (li == -2) { 190272343Sngie ptr = strchr(optstring, c); 191272343Sngie if (ptr == NULL) { 192272343Sngie snprintf(arg, sizeof(arg), 193272343Sngie "!%c,", c); 194272343Sngie strcat(buf, arg); 195272343Sngie continue; 196272343Sngie } 197272343Sngie if (ptr[1] != ':') 198272343Sngie snprintf(arg, sizeof(arg), 199272343Sngie "%c,", c); 200272343Sngie else 201272343Sngie snprintf(arg, sizeof(arg), 202272343Sngie "%c=%s,", c, optarg); 203272343Sngie } else { 204272343Sngie switch (longopts[li].has_arg) { 205272343Sngie case no_argument: 206272343Sngie snprintf(arg, sizeof(arg), "-%s,", 207272343Sngie longopts[li].name); 208272343Sngie break; 209272343Sngie case required_argument: 210272343Sngie snprintf(arg, sizeof(arg), 211272343Sngie "-%s=%s,", 212272343Sngie longopts[li].name, optarg); 213272343Sngie break; 214272343Sngie case optional_argument: 215272343Sngie snprintf(arg, sizeof(arg), 216272343Sngie "-%s%s%s,", 217272343Sngie longopts[li].name, 218272343Sngie (optarg)? "=" : "", 219272343Sngie (optarg)? optarg : ""); 220272343Sngie break; 221272343Sngie default: 222272343Sngie errx(1, "internal error"); 223272343Sngie } 224272343Sngie } 225272343Sngie strcat(buf, arg); 226272343Sngie li = -2; 227272343Sngie } 228272343Sngie len = strlen(buf); 229272343Sngie if (len > 0) { 230272343Sngie buf[len - 1] = '|'; 231272343Sngie buf[len] = '\0'; 232272343Sngie } else { 233272343Sngie buf[0] = '|'; 234272343Sngie buf[1] = '\0'; 235272343Sngie } 236272343Sngie snprintf(arg, sizeof(arg), "%d", nargs - optind); 237272343Sngie strcat(buf, arg); 238272343Sngie if (strcmp(buf, result) != 0) 239272343Sngie errx(1, "`%s' != `%s'", buf, result); 240272343Sngie } else 241272343Sngie errx(1, "unknown directive at line %ld", 242272343Sngie (unsigned long)lineno); 243272343Sngie free(line); 244272343Sngie } 245272343Sngie return 0; 246272343Sngie} 247