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2 7u83 1 
/*
7 7u83 2 
 * Copyright (c) 2002-2006 The TenDRA Project <http://www.tendra.org/>.
3 
 * All rights reserved.
4 
 *
5 
 * Redistribution and use in source and binary forms, with or without
6 
 * modification, are permitted provided that the following conditions are met:
7 
 *
8 
 * 1. Redistributions of source code must retain the above copyright notice,
9 
 *    this list of conditions and the following disclaimer.
10 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 
 *    this list of conditions and the following disclaimer in the documentation
12 
 *    and/or other materials provided with the distribution.
13 
 * 3. Neither the name of The TenDRA Project nor the names of its contributors
14 
 *    may be used to endorse or promote products derived from this software
15 
 *    without specific, prior written permission.
16 
 *
17 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
18 
 * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
19 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
21 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 
 * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
27 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 
 *
29 
 * $Id$
30 
 */
31 
/*
2 7u83 32 
    		 Crown Copyright (c) 1997
7 7u83 33 
 
2 7u83 34 
    This TenDRA(r) Computer Program is subject to Copyright
35 
    owned by the United Kingdom Secretary of State for Defence
36 
    acting through the Defence Evaluation and Research Agency
37 
    (DERA).  It is made available to Recipients with a
38 
    royalty-free licence for its use, reproduction, transfer
39 
    to other parties and amendment for any purpose not excluding
40 
    product development provided that any such use et cetera
41 
    shall be deemed to be acceptance of the following conditions:-
7 7u83 42 
 
2 7u83 43 
        (1) Its Recipients shall ensure that this Notice is
44 
        reproduced upon any copies or amended versions of it;
7 7u83 45 
 
2 7u83 46 
        (2) Any amended version of it shall be clearly marked to
47 
        show both the nature of and the organisation responsible
48 
        for the relevant amendment or amendments;
7 7u83 49 
 
2 7u83 50 
        (3) Its onward transfer from a recipient to another
51 
        party shall be deemed to be that party's acceptance of
52 
        these conditions;
7 7u83 53 
 
2 7u83 54 
        (4) DERA gives no warranty or assurance as to its
55 
        quality or suitability for any purpose and DERA accepts
56 
        no liability whatsoever in relation to any use to which
57 
        it may be put.
58 
*/
59 
 
60 
 
61 
/**** arg-parse.c --- Command line argument parsing.
62 
 *
63 
 ** Author: Steve Folkes <smf@hermes.mod.uk>
64 
 *
65 
 **** Commentary:
66 
 *
67 
 * This file implements the command line argument parsing routines specified
68 
 * in "arg-parse.h".  See that file for more details.
69 
 *
70 
 **** Change Log:
71 
 * $Log: arg-parse.c,v $
72 
 * Revision 1.1.1.1  1998/01/17  15:57:16  release
73 
 * First version to be checked into rolling release.
74 
 *
75 
 * Revision 1.3  1994/12/12  11:44:26  smf
76 
 * Performing changes for 'CR94_178.sid+tld-update' - bringing in line with
77 
 * OSSG C Coding Standards.
78 
 *
79 
 * Revision 1.2  1994/08/22  09:36:39  smf
80 
 * Fixed bug DR114:ids-too-long.
81 
 *
82 
 * Revision 1.1.1.1  1994/07/25  16:05:47  smf
83 
 * Initial import of library shared files.
84 
 *
85 
**/
86 
 
87 
/****************************************************************************/
88 
 
89 
#include "arg-parse.h"
90 
#include "gen-errors.h"
91 
 
92 
/*--------------------------------------------------------------------------*/
93 
 
94 
void
7 7u83 95 
arg_parse_intern_descriptions(ArgListP arg_list)
2 7u83 96 
{
7 7u83 97 
    while ((arg_list->name != NIL(CStringP)) ||
98 
	  (arg_list->short_name != '\0')) {
99 
	EStringP estring = error_lookup_string(arg_list->u.name);
2 7u83 100 
 
7 7u83 101 
	ASSERT(estring != NIL(EStringP));
2 7u83 102 
	arg_list->u.message = estring;
7 7u83 103 
	arg_list++;
2 7u83 104 
    }
105 
}
106 
 
107 
int
7 7u83 108 
arg_parse_arguments(ArgListP arg_list,			     EStringP usage ,
109 
			     int      argc ,
2 7u83 110 
			     char   **argv)
111 
{
112 
    int       tmp_argc = argc;
113 
    char    **tmp_argv = argv;
114 
    ArgUsageT closure;
115 
 
7 7u83 116 
    closure.usage    = error_string_contents(usage);
2 7u83 117 
    closure.arg_list = arg_list;
118 
    while (tmp_argc) {
7 7u83 119 
	CStringP option = (tmp_argv[0]);
120 
	char     c      = (option[0]);
2 7u83 121 
 
7 7u83 122 
	if ((((c == '-') && (option[1] == '-')) ||
123 
	    ((c == '+') && (option[1] == '+'))) && (option[2] == '\0')) {
124 
	    return(argc - tmp_argc + 1);
125 
	} else if (((c == '-') && (option[1] == '-')) ||
126 
		  ((c == '+') && (option[1] == '+'))) {
2 7u83 127 
	    ArgListP tmp_list  = arg_list;
7 7u83 128 
	    ArgListP chosen    = NIL(ArgListP);
2 7u83 129 
	    unsigned matches   = 0;
7 7u83 130 
	    CStringP immediate = NIL(CStringP);
2 7u83 131 
 
7 7u83 132 
	    while ((tmp_list->name != NIL(CStringP)) ||
133 
		  (tmp_list->short_name != '\0')) {
2 7u83 134 
		CStringP opt = (tmp_list->name);
7 7u83 135 
		CStringP arg = (& (option[2]));
2 7u83 136 
 
7 7u83 137 
		if (opt != NIL(CStringP)) {
2 7u83 138 
		    char optch;
139 
		    char argch;
140 
 
141 
		    do {
7 7u83 142 
			optch = (*opt++);
143 
			argch = (*arg++);
2 7u83 144 
		    } while (optch && argch && (optch == argch));
145 
		    if (optch == argch) {
146 
			chosen    = tmp_list;
147 
			matches   = 1;
148 
			immediate = (arg - 1);
149 
			break;
150 
		    } else if ((optch == '\0') &&
7 7u83 151 
			      (((tmp_list->type) == AT_IMMEDIATE) ||
2 7u83 152 
				((tmp_list->type) == AT_EITHER))) {
153 
			chosen    = tmp_list;
154 
			matches   = 1;
155 
			immediate = (arg - 1);
156 
			break;
157 
		    } else if (argch == '\0') {
158 
			chosen = tmp_list;
7 7u83 159 
			matches++;
2 7u83 160 
		    }
161 
		}
7 7u83 162 
		tmp_list++;
2 7u83 163 
	    }
164 
	    if (matches == 0) {
7 7u83 165 
		E_arg_parse_unknown_option(option, &closure);
2 7u83 166 
		UNREACHED;
167 
	    } else if (matches > 1) {
7 7u83 168 
		E_arg_parse_ambiguous_option(option, &closure);
2 7u83 169 
		UNREACHED;
170 
	    } else {
7 7u83 171 
		switch (chosen->type)EXHAUSTIVE {
2 7u83 172 
		  case AT_SWITCH:
7 7u83 173 
		   (*((BoolP)(chosen->closure))) = (c == '-');
2 7u83 174 
		    break;
175 
		  case AT_NEG_SWITCH:
7 7u83 176 
		   (*((BoolP)(chosen->closure))) = (c == '+');
2 7u83 177 
		    break;
178 
		  case AT_PROC_SWITCH:
7 7u83 179 
		   (*(chosen->proc))(option, &closure, chosen->closure,
2 7u83 180 
				       c == '-');
181 
		    break;
182 
		  case AT_IMMEDIATE:
7 7u83 183 
		    if (immediate != NIL(CStringP)) {
184 
			(*(chosen->proc))(option, &closure, chosen->closure,
2 7u83 185 
					   immediate);
186 
		    } else {
7 7u83 187 
			E_arg_parse_unknown_option(option, &closure);
2 7u83 188 
			UNREACHED;
189 
		    }
190 
		    break;
191 
		  case AT_EITHER:
7 7u83 192 
		    if (immediate != NIL(CStringP)) {
193 
			if (immediate[0]!= '\0') {
194 
			   (*(chosen->proc))(option, &closure,
2 7u83 195 
					       chosen->closure, immediate);
196 
			} else if (tmp_argc > 1) {
7 7u83 197 
			    tmp_argv++;
198 
			    tmp_argc--;
199 
			   (*(chosen->proc))(option, &closure,
200 
					       chosen->closure, tmp_argv[0]);
2 7u83 201 
			} else {
7 7u83 202 
			    E_arg_parse_missing_argument(option, &closure);
2 7u83 203 
			    UNREACHED;
204 
			}
205 
		    } else {
7 7u83 206 
			E_arg_parse_unknown_option(option, &closure);
2 7u83 207 
			UNREACHED;
208 
		    }
209 
		    break;
210 
		  case AT_FOLLOWING:
211 
		    if (tmp_argc > 1) {
7 7u83 212 
			tmp_argv++;
213 
			tmp_argc--;
214 
			(*(chosen->proc))(option, &closure, chosen->closure,
215 
					   tmp_argv[0]);
2 7u83 216 
		    } else {
7 7u83 217 
			E_arg_parse_missing_argument(option, &closure);
2 7u83 218 
			UNREACHED;
219 
		    }
220 
		    break;
221 
		  case AT_EMPTY:
7 7u83 222 
		   (*(chosen->proc))(option, &closure, chosen->closure);
2 7u83 223 
		    break;
224 
		  case AT_FOLLOWING2:
225 
		    if (tmp_argc > 2) {
226 
			tmp_argv += 2;
227 
			tmp_argc -= 2;
7 7u83 228 
			(*(chosen->proc))(option, &closure, chosen->closure,
229 
					   tmp_argv[-1], tmp_argv[0]);
2 7u83 230 
		    } else {
7 7u83 231 
			E_arg_parse_missing_argument(option, &closure);
2 7u83 232 
			UNREACHED;
233 
		    }
234 
		    break;
235 
		  case AT_FOLLOWING3:
236 
		    if (tmp_argc > 3) {
237 
			tmp_argv += 3;
238 
			tmp_argc -= 3;
7 7u83 239 
			(*(chosen->proc))(option, &closure, chosen->closure,
240 
					   tmp_argv[-2], tmp_argv[-1],
241 
					   tmp_argv[0]);
2 7u83 242 
		    } else {
7 7u83 243 
			E_arg_parse_missing_argument(option, &closure);
2 7u83 244 
			UNREACHED;
245 
		    }
246 
		    break;
247 
		}
248 
	    }
7 7u83 249 
	} else if (((c == '-') && (option[1] == '+')) ||
250 
		  ((c == '+') && (option[1] == '-')) ||
251 
		  ((c == '-') && (option[1] == '\0')) ||
252 
		  ((c == '+') && (option[1] == '\0'))) {
253 
	    E_arg_parse_unknown_option(option, &closure);
2 7u83 254 
	    UNREACHED;
255 
	} else if ((c == '-') || (c == '+')) {
7 7u83 256 
	    CStringP opt = & (option[1]);
2 7u83 257 
 
7 7u83 258 
	    while ((opt != NIL(CStringP)) && (*opt != '\0')) {
2 7u83 259 
		ArgListP tmp_list = arg_list;
7 7u83 260 
		ArgListP chosen   = NIL(ArgListP);
2 7u83 261 
 
7 7u83 262 
		while ((tmp_list->name != NIL(CStringP)) ||
263 
		      (tmp_list->short_name != '\0')) {
2 7u83 264 
		    if (tmp_list->short_name == *opt) {
265 
			chosen = tmp_list;
266 
			break;
267 
		    }
7 7u83 268 
		    tmp_list++;
2 7u83 269 
		}
270 
		if (chosen) {
7 7u83 271 
		    switch (chosen->type)EXHAUSTIVE {
2 7u83 272 
		      case AT_SWITCH:
7 7u83 273 
			(*((BoolP)(chosen->closure))) = (c == '-');
2 7u83 274 
			break;
275 
		      case AT_NEG_SWITCH:
7 7u83 276 
			(*((BoolP)(chosen->closure))) = (c == '+');
2 7u83 277 
			break;
278 
		      case AT_PROC_SWITCH:
7 7u83 279 
			(*(chosen->proc))(opt, &closure, chosen->closure,
2 7u83 280 
					   c == '-');
281 
			break;
282 
		      case AT_IMMEDIATE:
7 7u83 283 
			(*(chosen->proc))(opt, &closure, chosen->closure,
2 7u83 284 
					   opt + 1);
7 7u83 285 
			opt = NIL(CStringP);
2 7u83 286 
			break;
287 
		      case AT_EITHER:
7 7u83 288 
			if (opt[1]!= '\0') {
289 
			   (*(chosen->proc))(opt, &closure, chosen->closure,
2 7u83 290 
					       opt + 1);
291 
			} else if (tmp_argc > 1) {
7 7u83 292 
			    tmp_argv++;
293 
			    tmp_argc--;
294 
			   (*(chosen->proc))(opt, &closure, chosen->closure,
295 
					       tmp_argv[0]);
2 7u83 296 
			} else {
7 7u83 297 
			    E_arg_parse_missing_short_arg(option, opt,
2 7u83 298 
							   &closure);
299 
			    UNREACHED;
300 
			}
7 7u83 301 
			opt = NIL(CStringP);
2 7u83 302 
			break;
303 
		      case AT_FOLLOWING:
304 
			if (tmp_argc > 1) {
7 7u83 305 
			    tmp_argv++;
306 
			    tmp_argc--;
307 
			   (*(chosen->proc))(opt, &closure, chosen->closure,
308 
					       tmp_argv[0]);
2 7u83 309 
			} else {
7 7u83 310 
			    E_arg_parse_missing_short_arg(option, opt,
2 7u83 311 
							   &closure);
312 
			    UNREACHED;
313 
			}
314 
			break;
315 
		      case AT_EMPTY:
7 7u83 316 
			(*(chosen->proc))(opt, &closure, chosen->closure);
2 7u83 317 
			break;
318 
		      case AT_FOLLOWING2:
319 
			if (tmp_argc > 2) {
320 
			    tmp_argv += 2;
321 
			    tmp_argc -= 2;
7 7u83 322 
			   (*(chosen->proc))(opt, &closure, chosen->closure,
323 
					       tmp_argv[-1], tmp_argv[0]);
2 7u83 324 
			} else {
7 7u83 325 
			    E_arg_parse_missing_short_arg(option, opt,
2 7u83 326 
							   &closure);
327 
			    UNREACHED;
328 
			}
329 
			break;
330 
		      case AT_FOLLOWING3:
331 
			if (tmp_argc > 3) {
332 
			    tmp_argv += 3;
333 
			    tmp_argc -= 3;
7 7u83 334 
			   (*(chosen->proc))(opt, &closure, chosen->closure,
335 
					       tmp_argv[-2], tmp_argv[-1],
336 
					       tmp_argv[0]);
2 7u83 337 
			} else {
7 7u83 338 
			    E_arg_parse_missing_short_arg(option, opt,
2 7u83 339 
							   &closure);
340 
			    UNREACHED;
341 
			}
342 
			break;
343 
		    }
344 
		} else {
7 7u83 345 
		    E_arg_parse_unknown_short_opt(option, opt, &closure);
2 7u83 346 
		    UNREACHED;
347 
		}
348 
		if (opt) {
7 7u83 349 
		    opt++;
2 7u83 350 
		}
351 
	    }
352 
	} else {
7 7u83 353 
	    return(argc - tmp_argc);
2 7u83 354 
	}
7 7u83 355 
	tmp_argv++;
356 
	tmp_argc--;
2 7u83 357 
    }
7 7u83 358 
    return(argc);
2 7u83 359 
}
360 
 
361 
void
7 7u83 362 
write_arg_usage(OStreamP  ostream,			 ArgUsageP closure)
2 7u83 363 
{
364 
    CStringP usage    = (closure->usage);
365 
    ArgListP arg_list = (closure->arg_list);
366 
 
7 7u83 367 
    write_cstring(ostream, usage);
368 
    while ((arg_list->name != NIL(CStringP)) ||
369 
	  (arg_list->short_name != '\0')) {
370 
	CStringP desc = error_string_contents(arg_list->u.message);
2 7u83 371 
 
372 
	if (arg_list->name) {
7 7u83 373 
	    write_newline(ostream);
374 
	    write_cstring(ostream, "    {--|++}");
375 
	    write_cstring(ostream, arg_list->name);
376 
	    write_cstring(ostream, desc);
2 7u83 377 
	}
378 
	if (arg_list->short_name != '\0') {
7 7u83 379 
	    write_newline(ostream);
380 
	    write_cstring(ostream, "    {-|+}");
381 
	    write_char(ostream, arg_list->short_name);
382 
	    write_cstring(ostream, desc);
2 7u83 383 
	}
7 7u83 384 
	arg_list++;
2 7u83 385 
    }
386 
}
387 
 
388 
/*
389 
 * Local variables(smf):
390 
 * eval: (include::add-path-entry "../os-interface" "../generated")
391 
 * end:
392 
**/