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2 7u83 1 
/*
7 7u83 2 
 * Copyright (c) 2002-2005 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 
/**** error-file.c --- Error file parsing routines.
62 
 *
63 
 ** Author: Steve Folkes <smf@hermes.mod.uk>
64 
 *
65 
 **** Commentary:
66 
 *
67 
 * This file implements the error file parsing facility specified in the file
68 
 * "error-file.h".  See that file for more details.
69 
 *
70 
 **** Change Log:
71 
 * $Log: error-file.c,v $
72 
 * Revision 1.1.1.1  1998/01/17  15:57:45  release
73 
 * First version to be checked into rolling release.
74 
 *
75 
 * Revision 1.3  1994/12/12  11:44:37  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  09:36:44  smf
80 
 * Fixed bug DR114:ids-too-long.
81 
 *
82 
 * Revision 1.1.1.1  1994/07/25  16:05:49  smf
83 
 * Initial import of library shared files.
84 
 *
85 
**/
86 
 
87 
/****************************************************************************/
88 
 
89 
#include "error-file.h"
90 
#include "dstring.h"
91 
#include "error.h"
92 
#include "gen-errors.h"
93 
#include "syntax.h"
94 
 
95 
/*--------------------------------------------------------------------------*/
96 
 
97 
#ifdef FS_NO_ENUM
98 
typedef int ErrorFileTagT, *ErrorFileTagP;
99 
#define EFTOKEN_NAME		(0)
100 
#define EFTOKEN_STRING		(1)
101 
#define EFTOKEN_BLT_STRINGS	(2)
102 
#define EFTOKEN_BLT_PREFIX	(3)
103 
#define EFTOKEN_BLT_ERRORS	(4)
104 
#define EFTOKEN_EOF		(5)
105 
#else
106 
typedef enum {
107 
    EFTOKEN_NAME,
108 
    EFTOKEN_STRING,
109 
    EFTOKEN_BLT_STRINGS,
110 
    EFTOKEN_BLT_PREFIX,
111 
    EFTOKEN_BLT_ERRORS,
112 
    EFTOKEN_EOF
113 
} ErrorFileTagT, *ErrorFileTagP;
114 
#endif /* defined (FS_NO_ENUM) */
115 
 
116 
typedef struct ErrorFileLexT {
117 
    ErrorFileTagT		tag;
118 
    union {
119 
	CStringP		string;
120 
    } u;
121 
} ErrorFileLexT, *ErrorFileLexP;
122 
 
123 
#ifdef FS_NO_ENUM
124 
typedef int ErrorFileTokenT, *ErrorFileTokenP;
125 
#define EFN_BUILTIN	(0)
126 
#define EFN_NAME	(1)
127 
#define EFN_STRING	(2)
128 
#else
129 
typedef enum {
130 
    EFN_BUILTIN,
131 
    EFN_NAME,
132 
    EFN_STRING
133 
} ErrorFileTokenT, *ErrorFileTokenP;
134 
#endif /* defined (FS_NO_ENUM) */
135 
 
136 
/*--------------------------------------------------------------------------*/
137 
 
138 
static BoolT
7 7u83 139 
error_file_skip_white_space(IStreamP istream, char *c_ref)
2 7u83 140 
{
141 
    BoolT comment = FALSE;
142 
 
143 
    for (;;) {
144 
	char c;
145 
 
146 
      redo:
7 7u83 147 
	switch (c = ISTREAM_READ_CHAR(istream)) {
2 7u83 148 
	  case '\0':
7 7u83 149 
	    ISTREAM_HANDLE_NULL(istream, redo, eof);
2 7u83 150 
	    break;
151 
	  case '\n':
7 7u83 152 
	    istream_inc_line(istream);
2 7u83 153 
	    comment = FALSE;
154 
	    break;
155 
	  case '#':
156 
	    comment = TRUE;
157 
	    break;
158 
	  default:
7 7u83 159 
	    if ((!comment) && (!syntax_is_white_space(c))) {
2 7u83 160 
		*c_ref = c;
7 7u83 161 
		return(TRUE);
2 7u83 162 
	    }
163 
	}
164 
    }
165 
  eof:
7 7u83 166 
    return(FALSE);
2 7u83 167 
}
168 
 
169 
static void
7 7u83 170 
error_file_null_character(IStreamP istream, ErrorFileTokenT type)
2 7u83 171 
{
7 7u83 172 
    switch (type)EXHAUSTIVE {
2 7u83 173 
      case EFN_NAME:
7 7u83 174 
	E_errf_null_character_in_name(istream);
2 7u83 175 
	UNREACHED;
176 
      case EFN_BUILTIN:
7 7u83 177 
	E_errf_null_char_in_builtin(istream);
2 7u83 178 
	UNREACHED;
179 
      case EFN_STRING:
7 7u83 180 
	E_errf_null_character_in_string(istream);
2 7u83 181 
	UNREACHED;
182 
    }
183 
}
184 
 
185 
static void
7 7u83 186 
error_file_newline(IStreamP istream, ErrorFileTokenT type)
2 7u83 187 
{
7 7u83 188 
    switch (type)EXHAUSTIVE {
2 7u83 189 
      case EFN_NAME:
7 7u83 190 
	E_errf_newline_in_name(istream);
2 7u83 191 
	UNREACHED;
192 
      case EFN_BUILTIN:
7 7u83 193 
	E_errf_newline_in_builtin(istream);
2 7u83 194 
	UNREACHED;
195 
      case EFN_STRING:
7 7u83 196 
	E_errf_newline_in_string(istream);
2 7u83 197 
	UNREACHED;
198 
    }
199 
}
200 
 
201 
static void
7 7u83 202 
error_file_illegal_escape(IStreamP istream, ErrorFileTokenT type)
2 7u83 203 
{
7 7u83 204 
    switch (type)EXHAUSTIVE {
2 7u83 205 
      case EFN_NAME:
7 7u83 206 
	E_errf_illegal_escape_in_name(istream);
2 7u83 207 
	UNREACHED;
208 
      case EFN_BUILTIN:
7 7u83 209 
	E_errf_illegal_esc_in_builtin(istream);
2 7u83 210 
	UNREACHED;
211 
      case EFN_STRING:
7 7u83 212 
	E_errf_illegal_escape_in_string(istream);
2 7u83 213 
	UNREACHED;
214 
    }
215 
}
216 
 
217 
static void
7 7u83 218 
error_file_eof(IStreamP istream, ErrorFileTokenT type)
2 7u83 219 
{
7 7u83 220 
    switch (type)EXHAUSTIVE {
2 7u83 221 
      case EFN_NAME:
7 7u83 222 
	E_errf_eof_in_name(istream);
2 7u83 223 
	UNREACHED;
224 
      case EFN_BUILTIN:
7 7u83 225 
	E_errf_eof_in_builtin(istream);
2 7u83 226 
	UNREACHED;
227 
      case EFN_STRING:
7 7u83 228 
	E_errf_eof_in_string(istream);
2 7u83 229 
	UNREACHED;
230 
    }
231 
}
232 
 
233 
static void
7 7u83 234 
error_file_read_until(IStreamP istream, char term, ErrorFileTokenT type,
235 
		      ErrorFileLexP token)
2 7u83 236 
{
237 
    DStringT dstring;
238 
 
7 7u83 239 
    dstring_init(&dstring);
2 7u83 240 
    for (;;) {
241 
	char c;
242 
 
243 
      redo:
7 7u83 244 
	switch (c = ISTREAM_READ_CHAR(istream)) {
2 7u83 245 
	  case '\0':
7 7u83 246 
	    ISTREAM_HANDLE_NULL(istream, redo, eof);
247 
	    error_file_null_character(istream, type);
2 7u83 248 
	    UNREACHED;
249 
	  case '\n':
7 7u83 250 
	    istream_inc_line(istream);
251 
	    error_file_newline(istream, type);
2 7u83 252 
	    UNREACHED;
253 
	  default:
254 
	    if (c == term) {
255 
		CStringP tmp;
256 
 
7 7u83 257 
		tmp = dstring_to_cstring(&dstring);
258 
		dstring_destroy(&dstring);
2 7u83 259 
		token->u.string = tmp;
260 
		return;
261 
	    } else if (c == '\\') {
7 7u83 262 
		switch (istream_read_escaped_char(istream, &c))EXHAUSTIVE {
2 7u83 263 
		  case ISTREAM_STAT_READ_CHAR:
264 
		    if (c == '\0') {
7 7u83 265 
			error_file_null_character(istream, type);
2 7u83 266 
			UNREACHED;
267 
		    }
7 7u83 268 
		    dstring_append_char(&dstring, c);
2 7u83 269 
		    break;
270 
		  case ISTREAM_STAT_SYNTAX_ERROR:
7 7u83 271 
		    error_file_illegal_escape(istream, type);
2 7u83 272 
		    UNREACHED;
273 
		  case ISTREAM_STAT_NO_CHAR:
274 
		    /*NOTHING*/
275 
		    break;
276 
		}
277 
	    } else {
7 7u83 278 
		dstring_append_char(&dstring, c);
2 7u83 279 
	    }
280 
	    break;
281 
	}
282 
    }
283 
  eof:
7 7u83 284 
    error_file_eof(istream, type);
2 7u83 285 
    UNREACHED;
286 
}
287 
 
288 
static void
7 7u83 289 
error_file_check_builtin(IStreamP istream, ErrorFileLexP token)
2 7u83 290 
{
7 7u83 291 
    if (cstring_ci_equal(token->u.string, "strings")) {
2 7u83 292 
	token->tag = EFTOKEN_BLT_STRINGS;
7 7u83 293 
    } else if (cstring_ci_equal(token->u.string, "prefix")) {
2 7u83 294 
	token->tag = EFTOKEN_BLT_PREFIX;
7 7u83 295 
    } else if (cstring_ci_equal(token->u.string, "errors")) {
2 7u83 296 
	token->tag = EFTOKEN_BLT_ERRORS;
297 
    } else {
7 7u83 298 
	E_errf_unknown_builtin(istream, token->u.string);
2 7u83 299 
	UNREACHED;
300 
    }
7 7u83 301 
    DEALLOCATE(token->u.string);
2 7u83 302 
}
303 
 
304 
static void
7 7u83 305 
error_file_next_token(IStreamP istream, ErrorFileLexP token)
2 7u83 306 
{
307 
    char c;
308 
 
7 7u83 309 
    if (error_file_skip_white_space(istream, &c)) {
2 7u83 310 
	switch (c) {
311 
	  case '%':
7 7u83 312 
	    error_file_read_until(istream, '%', EFN_BUILTIN, token);
313 
	    error_file_check_builtin(istream, token);
2 7u83 314 
	    break;
315 
	  case '\'':
7 7u83 316 
	    error_file_read_until(istream, '\'', EFN_NAME, token);
2 7u83 317 
	    token->tag = EFTOKEN_NAME;
318 
	    break;
319 
	  case '"':
7 7u83 320 
	    error_file_read_until(istream, '"', EFN_STRING, token);
2 7u83 321 
	    token->tag = EFTOKEN_STRING;
322 
	    break;
323 
	  default:
7 7u83 324 
	    E_errf_illegal_character(istream, c);
2 7u83 325 
	    UNREACHED;
326 
	}
327 
    } else {
328 
	token->tag = EFTOKEN_EOF;
329 
    }
330 
}
331 
 
332 
static void
7 7u83 333 
error_file_parse_strings(IStreamP istream, ErrorFileLexP token)
2 7u83 334 
{
7 7u83 335 
    while (error_file_next_token(istream, token),
336 
	  (token->tag == EFTOKEN_NAME)) {
2 7u83 337 
	CStringP name = token->u.string;
338 
 
7 7u83 339 
	if (error_file_next_token(istream, token),
340 
	   (token->tag != EFTOKEN_STRING)) {
341 
	    E_errf_expected_string(istream);
2 7u83 342 
	    UNREACHED;
7 7u83 343 
	} else if (!error_redefine_string(name, token->u.string)) {
344 
	    E_errf_unknown_string(istream, name);
2 7u83 345 
	    UNREACHED;
346 
	}
7 7u83 347 
	DEALLOCATE(name);
2 7u83 348 
    }
349 
}
350 
 
351 
static void
7 7u83 352 
error_file_parse_prefix(IStreamP istream, ErrorFileLexP token)
2 7u83 353 
{
7 7u83 354 
    error_file_next_token(istream, token);
2 7u83 355 
    if (token->tag != EFTOKEN_STRING) {
7 7u83 356 
	E_errf_expected_string(istream);
2 7u83 357 
	UNREACHED;
7 7u83 358 
    } else if (!error_set_prefix_message(token->u.string)) {
359 
	E_errf_illegal_message(istream, token->u.string);
2 7u83 360 
	UNREACHED;
361 
    }
7 7u83 362 
    DEALLOCATE(token->u.string);
363 
    error_file_next_token(istream, token);
2 7u83 364 
}
365 
 
366 
static void
7 7u83 367 
error_file_parse_errors(IStreamP istream, ErrorFileLexP token)
2 7u83 368 
{
7 7u83 369 
    while (error_file_next_token(istream, token),
370 
	  (token->tag == EFTOKEN_NAME)) {
2 7u83 371 
	CStringP name = token->u.string;
372 
 
7 7u83 373 
	error_file_next_token(istream, token);
2 7u83 374 
	if (token->tag != EFTOKEN_STRING) {
7 7u83 375 
	    E_errf_expected_string(istream);
2 7u83 376 
	    UNREACHED;
377 
	} else {
7 7u83 378 
	    switch (error_redefine_error(name, token->u.string))EXHAUSTIVE {
2 7u83 379 
	      case ERROR_STATUS_BAD_ERROR:
7 7u83 380 
		E_errf_unknown_error(istream, name);
2 7u83 381 
		UNREACHED;
382 
	      case ERROR_STATUS_BAD_MESSAGE:
7 7u83 383 
		E_errf_illegal_message(istream, token->u.string);
2 7u83 384 
		UNREACHED;
385 
	      case ERROR_STATUS_SUCCESS:
386 
		/*NOTHING*/
387 
		break;
388 
	    }
389 
	}
7 7u83 390 
	DEALLOCATE(name);
391 
	DEALLOCATE(token->u.string);
2 7u83 392 
    }
393 
}
394 
 
395 
/*--------------------------------------------------------------------------*/
396 
 
397 
void
7 7u83 398 
error_file_parse(CStringP name, BoolT must_open)
2 7u83 399 
{
400 
    IStreamT      istream;
401 
    ErrorFileLexT token;
402 
 
7 7u83 403 
    if (istream_open(&istream, name)) {
404 
	error_file_next_token(&istream, &token);
2 7u83 405 
	while (token.tag != EFTOKEN_EOF) {
406 
	    switch (token.tag) {
407 
	      case EFTOKEN_BLT_STRINGS:
7 7u83 408 
		error_file_parse_strings(&istream, &token);
2 7u83 409 
		break;
410 
	      case EFTOKEN_BLT_PREFIX:
7 7u83 411 
		error_file_parse_prefix(&istream, &token);
2 7u83 412 
		break;
413 
	      case EFTOKEN_BLT_ERRORS:
7 7u83 414 
		error_file_parse_errors(&istream, &token);
2 7u83 415 
		break;
416 
	      default:
7 7u83 417 
		E_errf_expected_section(&istream);
2 7u83 418 
		UNREACHED;
419 
	    }
420 
	}
7 7u83 421 
	istream_close(&istream);
2 7u83 422 
    } else if (must_open) {
7 7u83 423 
	E_errf_cannot_open(name);
2 7u83 424 
	UNREACHED;
425 
    }
426 
}
427 
 
428 
/*
429 
 * Local variables(smf):
430 
 * eval: (include::add-path-entry "../os-interface" "../generated")
431 
 * end:
432 
**/