/* $NetBSD: h_getopt_long.c,v 1.1 2011/01/01 23:56:49 pgoyette Exp $ */ /*- * Copyright (c) 2007 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Christos Zoulas. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <ctype.h> #include <err.h> #include <getopt.h> #include <stdio.h> #include <string.h> #include <stdlib.h> #include <unistd.h> #ifdef __FreeBSD__ /* * Needed to avoid libutil.h pollution in stdio.h, which causes grief with * with hexdump(3) in lib/libc/db/h_hash.c */ #include <libutil.h> #endif #define SKIPWS(p) while (isspace((int)(*p))) p++ #define WS "\t\n " int main(int argc, char *argv[]) { size_t len, lineno = 0; char *line, *eptr, *longopt, *ptr, *optstring = NULL, *result = NULL; char buf[1024]; char *args[128]; char arg[256]; int nargs = -1; int c; int nlongopts = 0; int maxnlongopts = 0; int *longopt_flags = NULL; struct option *longopts = NULL; while ((line = fparseln(stdin, &len, &lineno, NULL, 0)) != NULL) { if (strncmp(line, "optstring:", 10) == 0) { if (optstring) free(optstring); optstring = strtok(&line[11], WS); if (optstring == NULL) errx(1, "missing optstring at line %ld", (unsigned long)lineno); optstring = strdup(optstring); } else if (strncmp(line, "longopts:", 9) == 0) { if (longopts) { int i; for (i = 0; i < nlongopts; i++) if (longopts[i].name != NULL) free(__UNCONST(longopts[i].name)); free(longopts); } if (longopt_flags) free(longopt_flags); nlongopts = 0; ptr = strtok(&line[10], WS); if (ptr == NULL) errx(1, "missing longopts at line %ld", (unsigned long)lineno); maxnlongopts = strtoul(ptr, &eptr, 10); if (*eptr != '\0') warnx("garbage in longopts at line %ld", (unsigned long)lineno); maxnlongopts++; /* space for trailer */ longopts = (struct option *)calloc(sizeof(struct option), maxnlongopts); if (longopts == NULL) err(1, "calloc"); longopt_flags = (int *)calloc(sizeof(int), maxnlongopts); if (longopt_flags == NULL) err(1, "calloc"); } else if (strncmp(line, "longopt:", 8) == 0) { if (longopts == NULL) errx(1, "longopt: without longopts at line %ld", (unsigned long)lineno); if (nlongopts >= maxnlongopts) errx(1, "longopt: too many options at line %ld", (unsigned long)lineno); /* name */ ptr = &line[9]; SKIPWS(ptr); longopt = strsep(&ptr, ","); if (longopt == NULL) errx(1, "missing longopt at line %ld", (unsigned long)lineno); longopts[nlongopts].name = strdup(longopt); /* has_arg */ SKIPWS(ptr); longopt = strsep(&ptr, ","); if (*longopt != '\0') { if (strncmp(longopt, "0", 1) == 0 || strncmp(longopt, "no_argument", 2) == 0) longopts[nlongopts].has_arg = no_argument; else if (strncmp(longopt, "1", 1) == 0 || strncmp(longopt, "required_argument", 8) == 0) longopts[nlongopts].has_arg = required_argument; else if (strncmp(longopt, "2", 1) == 0 || strncmp(longopt, "optional_argument", 8) == 0) longopts[nlongopts].has_arg = optional_argument; else errx(1, "unknown has_arg %s at line %ld", longopt, (unsigned long)lineno); } /* flag */ SKIPWS(ptr); longopt = strsep(&ptr, ","); if (*longopt != '\0' && strncmp(longopt, "NULL", 4) != 0) longopts[nlongopts].flag = &longopt_flags[nlongopts]; /* val */ SKIPWS(ptr); longopt = strsep(&ptr, ","); if (*longopt == '\0') errx(1, "missing val at line %ld", (unsigned long)lineno); if (*longopt != '\'') { longopts[nlongopts].val = (int)strtoul(longopt, &eptr, 10); if (*eptr != '\0') errx(1, "invalid val at line %ld", (unsigned long)lineno); } else longopts[nlongopts].val = (int)longopt[1]; nlongopts++; } else if (strncmp(line, "args:", 5) == 0) { for (; nargs >= 0; nargs--) { if (args[nargs] != NULL) free(args[nargs]); } args[nargs = 0] = strtok(&line[6], WS); if (args[nargs] == NULL) errx(1, "Missing args"); args[nargs] = strdup(args[nargs]); while ((args[++nargs] = strtok(NULL, WS)) != NULL) args[nargs] = strdup(args[nargs]); } else if (strncmp(line, "result:", 7) == 0) { int li; buf[0] = '\0'; optind = optreset = 1; if (result) free(result); result = strtok(&line[8], WS); if (result == NULL) errx(1, "missing result at line %ld", (unsigned long)lineno); if (optstring == NULL) errx(1, "result: without optstring"); if (longopts == NULL || nlongopts == 0) errx(1, "result: without longopts"); result = strdup(result); if (nargs == -1) errx(1, "result: without args"); li = -2; while ((c = getopt_long(nargs, args, optstring, longopts, &li)) != -1) { if (c == ':') errx(1, "`:' found as argument char"); if (li == -2) { ptr = strchr(optstring, c); if (ptr == NULL) { snprintf(arg, sizeof(arg), "!%c,", c); strcat(buf, arg); continue; } if (ptr[1] != ':') snprintf(arg, sizeof(arg), "%c,", c); else snprintf(arg, sizeof(arg), "%c=%s,", c, optarg); } else { switch (longopts[li].has_arg) { case no_argument: snprintf(arg, sizeof(arg), "-%s,", longopts[li].name); break; case required_argument: snprintf(arg, sizeof(arg), "-%s=%s,", longopts[li].name, optarg); break; case optional_argument: snprintf(arg, sizeof(arg), "-%s%s%s,", longopts[li].name, (optarg)? "=" : "", (optarg)? optarg : ""); break; default: errx(1, "internal error"); } } strcat(buf, arg); li = -2; } len = strlen(buf); if (len > 0) { buf[len - 1] = '|'; buf[len] = '\0'; } else { buf[0] = '|'; buf[1] = '\0'; } snprintf(arg, sizeof(arg), "%d", nargs - optind); strcat(buf, arg); if (strcmp(buf, result) != 0) errx(1, "`%s' != `%s'", buf, result); } else errx(1, "unknown directive at line %ld", (unsigned long)lineno); free(line); } return 0; }