2 Copyright (C) 2001, 2002 The Genes Development Team
3 This file is part of the Gedcom parser library.
4 Contributed by Peter Verthez <Peter.Verthez@advalvas.be>, 2001.
6 The Gedcom parser library is free software; you can redistribute it
7 and/or modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The Gedcom parser library is distributed in the hope that it will be
12 useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the Gedcom parser library; if not, write to the
18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
26 #include "gedcom_internal.h"
30 #include "gedcom.tabgen.h"
33 static size_t encoding_width;
34 static int current_level = -1;
35 static int level_diff=MAXGEDCLEVEL;
36 static size_t line_len = 0;
38 static char ptr_buf[MAXGEDCPTRLEN * UTF_FACTOR + 1];
39 static char tag_buf[MAXGEDCTAGLEN * UTF_FACTOR + 1];
40 static char str_buf[MAXGEDCLINELEN * UTF_FACTOR + 1];
49 void message_handler(Gedcom_msg_type type, char *msg)
51 fprintf(stderr, "(%d) %s\n", type, msg);
54 int test_loop(ENCODING enc, const char* code)
58 set_encoding_width(enc);
59 gedcom_set_message_handler(message_handler);
60 res = open_conv_to_internal(code);
62 gedcom_error("Unable to open conversion context: %s",
69 case BADTOKEN: printf("BADTOKEN "); break;
70 case OPEN: printf("OPEN(%d) ", gedcom_lval.number); break;
71 case CLOSE: printf("CLOSE "); break;
72 case ESCAPE: printf("ESCAPE(%s) ", gedcom_lval.string); break;
73 case DELIM: printf("DELIM "); break;
74 case ANYCHAR: printf("%s ", gedcom_lval.string); break;
75 case POINTER: printf("POINTER(%s) ", gedcom_lval.string); break;
76 case USERTAG: printf("USERTAG(%s) ", gedcom_lval.tag.string); break;
77 default: printf("TAG(%s) ", gedcom_lval.tag.string); break;
82 close_conv_to_internal();
86 #endif /* of #ifdef LEXER_TEST */
88 /* These are defined as functions here, because xgettext has trouble
89 extracting the strings out of long pre-processor defined */
91 static void error_line_too_long()
93 gedcom_error(_("Line too long, max %d characters allowed"), MAXGEDCLINELEN);
96 static void error_level_leading_zero()
98 gedcom_error (_("Level number with leading zero not allowed"));
101 static void error_level_out_of_range()
103 gedcom_error (_("Level number out of range [0..%d]"), MAXGEDCLEVEL);
106 static void error_level_too_high(int level_diff)
108 gedcom_error (_("GEDCOM level number is %d higher than previous"),
112 static void error_tag_too_long(const char *tag)
114 gedcom_error(_("Tag '%s' too long, max %d characters allowed"),
118 static void error_invalid_character(const char *str, char ch)
120 gedcom_error(_("Invalid character for encoding: '%s' (0x%02x)"), str, ch);
123 static void error_pointer_too_long(const char *ptr)
125 gedcom_error(_("Pointer '%s' too long, max %d characters allowed"),
129 static void error_at_character()
131 gedcom_error(_("'@' character should be written as '@@' in values"));
134 static void error_unexpected_character(const char* str, char ch)
136 gedcom_error(_("Unexpected character: '%s' (0x%02x)"), str, ch);
139 /* This is to bypass the iconv conversion (if the input is UTF-8 coming
141 static int dummy_conv = 0;
143 #elif LEX_SECTION == 2
145 #define TO_INTERNAL(STR,OUTBUF) \
146 (dummy_conv ? STR : to_internal(STR, yyleng, OUTBUF, sizeof(OUTBUF)))
148 #define INIT_LINE_LEN \
151 #define CHECK_LINE_LEN \
152 { if (line_len != (size_t)-1) { \
153 line_len += strlen(yytext); \
154 if (line_len > MAXGEDCLINELEN * encoding_width) { \
155 error_line_too_long(); \
156 line_len = (size_t)-1; \
162 #define MKTAGACTION(THETAG) \
164 gedcom_lval.tag.string = TO_INTERNAL(yytext, tag_buf); \
165 gedcom_lval.tag.value = TAG_##THETAG; \
168 return TAG_##THETAG; \
171 /* The GEDCOM level number is converted into a sequence of opening
172 and closing brackets. Simply put, the following GEDCOM fragment:
185 { SOUR genes (1 higher: no closing brackets)
186 { VERS 1.6 (1 higher: no closing brackets)
187 } { NAME Genes (same level: 1 closing bracket)
188 } } { DATE 07 OCT 2001 (1 lower: 2 closing brackets)
202 But because this means that one token is converted into a series
203 of tokens, there is some initial code following immediately here
204 that returns "pending" tokens. */
206 #define ACTION_BEFORE_REGEXPS \
207 { if (level_diff < 1) { \
211 else if (level_diff == 1) { \
213 gedcom_lval.number = current_level; \
217 /* out of brackets... */ \
222 #define ACTION_INITIAL_WHITESPACE \
224 /* ignore initial whitespace further */ \
228 #define ACTION_0_DIGITS \
229 { error_level_leading_zero(); \
234 #define ACTION_DIGITS \
235 { int level = atoi(TO_INTERNAL(yytext, str_buf)); \
237 if ((level < 0) || (level > MAXGEDCLEVEL)) { \
238 error_level_out_of_range(); \
242 level_diff = level - current_level; \
244 current_level = level; \
245 if (level_diff < 1) { \
249 else if (level_diff == 1) { \
251 gedcom_lval.number = current_level; \
255 /* should never happen (error to GEDCOM spec) */ \
256 error_level_too_high(level_diff); \
263 #define ACTION_ALPHANUM \
264 { if (strlen(yytext) > MAXGEDCTAGLEN * encoding_width) { \
265 error_tag_too_long(yytext); \
270 gedcom_lval.tag.string = TO_INTERNAL(yytext, tag_buf); \
271 gedcom_lval.tag.value = USERTAG; \
278 #define ACTION_DELIM \
280 gedcom_lval.string = TO_INTERNAL(yytext, str_buf); \
288 tmp = TO_INTERNAL(yytext, str_buf); \
290 /* Something went wrong during conversion... */ \
291 error_invalid_character(yytext, yytext[0]); \
295 gedcom_lval.string = tmp; \
296 /* Due to character conversions, it is possible that the current \
297 character will be combined with the next, and so now we don't have a \
299 In principle, this is only applicable to the 1byte case (e.g. ANSEL),\
300 but it doesn't harm the unicode case. \
302 if (strlen(gedcom_lval.string) > 0) \
308 #define ACTION_ESCAPE \
310 gedcom_lval.string = TO_INTERNAL(yytext, str_buf); \
315 #define ACTION_POINTER \
317 if (strlen(yytext) > MAXGEDCPTRLEN * encoding_width) { \
318 error_pointer_too_long(yytext); \
321 gedcom_lval.string = TO_INTERNAL(yytext, ptr_buf); \
326 /* Due to the conversion of level numbers into brackets, the
327 terminator is not important, so no token is returned here.
328 Although not strictly according to the GEDCOM spec, we'll ignore
329 whitespace just before the terminator.
332 #define ACTION_TERMINATOR \
339 /* Eventually we have to return 1 closing bracket (for the trailer).
340 We can detect whether we have sent the closing bracket using the
341 level_diff (at eof, first it is 2, then we increment it ourselves)
345 { if (level_diff == 2) { \
350 char* ptr; int size; \
351 /* ... terminate lex */ \
353 /* Get rid of f*cking compiler warning from lex generated code */ \
354 /* yyterminate does return(), so program will never come here */ \
355 yy_flex_realloc(ptr, size); \
359 #define ACTION_NORMAL_AT \
362 char *yycopy = strdup(yytext); \
364 for (i = 0; i < 2; i++) \
365 for (j = yyleng - 1; j >= 0; --j) \
374 error_at_character(); \
379 #define ACTION_UNEXPECTED \
380 { error_unexpected_character(yytext, yytext[0]); \
384 #elif LEX_SECTION == 3
391 static void yylex_cleanup()
393 /* fix memory leak in lex */
394 yy_delete_buffer(yy_current_buffer);
395 yy_current_buffer = NULL;
398 static int exitfuncregistered = 0;
400 void yymyinit(FILE *f)
402 if (! exitfuncregistered && atexit(yylex_cleanup) == 0)
403 exitfuncregistered = 1;
406 /* Reset our state */
408 level_diff = MAXGEDCLEVEL;