Line data Source code
1 : /* src/interfaces/ecpg/preproc/ecpg.c */
2 :
3 : /* Main for ecpg, the PostgreSQL embedded SQL precompiler. */
4 : /* Copyright (c) 1996-2023, PostgreSQL Global Development Group */
5 :
6 : #include "postgres_fe.h"
7 :
8 : #include <unistd.h>
9 :
10 : #include "getopt_long.h"
11 :
12 : #include "preproc_extern.h"
13 :
14 : int ret_value = 0;
15 : bool autocommit = false,
16 : auto_create_c = false,
17 : system_includes = false,
18 : force_indicator = true,
19 : questionmarks = false,
20 : regression_mode = false,
21 : auto_prepare = false;
22 :
23 : char *output_filename;
24 :
25 : enum COMPAT_MODE compat = ECPG_COMPAT_PGSQL;
26 :
27 : struct _include_path *include_paths = NULL;
28 : struct cursor *cur = NULL;
29 : struct typedefs *types = NULL;
30 : struct _defines *defines = NULL;
31 : struct declared_list *g_declared_list = NULL;
32 :
33 : static void
34 0 : help(const char *progname)
35 : {
36 0 : printf(_("%s is the PostgreSQL embedded SQL preprocessor for C programs.\n\n"),
37 : progname);
38 0 : printf(_("Usage:\n"
39 : " %s [OPTION]... FILE...\n\n"),
40 : progname);
41 0 : printf(_("Options:\n"));
42 0 : printf(_(" -c automatically generate C code from embedded SQL code;\n"
43 : " this affects EXEC SQL TYPE\n"));
44 0 : printf(_(" -C MODE set compatibility mode; MODE can be one of\n"
45 : " \"INFORMIX\", \"INFORMIX_SE\", \"ORACLE\"\n"));
46 : #ifdef YYDEBUG
47 : printf(_(" -d generate parser debug output\n"));
48 : #endif
49 0 : printf(_(" -D SYMBOL define SYMBOL\n"));
50 0 : printf(_(" -h parse a header file, this option includes option \"-c\"\n"));
51 0 : printf(_(" -i parse system include files as well\n"));
52 0 : printf(_(" -I DIRECTORY search DIRECTORY for include files\n"));
53 0 : printf(_(" -o OUTFILE write result to OUTFILE\n"));
54 0 : printf(_(" -r OPTION specify run-time behavior; OPTION can be:\n"
55 : " \"no_indicator\", \"prepare\", \"questionmarks\"\n"));
56 0 : printf(_(" --regression run in regression testing mode\n"));
57 0 : printf(_(" -t turn on autocommit of transactions\n"));
58 0 : printf(_(" -V, --version output version information, then exit\n"));
59 0 : printf(_(" -?, --help show this help, then exit\n"));
60 0 : printf(_("\nIf no output file is specified, the name is formed by adding .c to the\n"
61 : "input file name, after stripping off .pgc if present.\n"));
62 0 : printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
63 0 : printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
64 0 : }
65 :
66 : static void
67 786 : add_include_path(char *path)
68 : {
69 786 : struct _include_path *ip = include_paths,
70 : *new;
71 :
72 786 : new = mm_alloc(sizeof(struct _include_path));
73 786 : new->path = path;
74 786 : new->next = NULL;
75 :
76 786 : if (ip == NULL)
77 128 : include_paths = new;
78 : else
79 : {
80 2028 : for (; ip->next != NULL; ip = ip->next);
81 658 : ip->next = new;
82 : }
83 786 : }
84 :
85 : static void
86 0 : add_preprocessor_define(char *define)
87 : {
88 0 : struct _defines *pd = defines;
89 : char *ptr,
90 0 : *define_copy = mm_strdup(define);
91 :
92 0 : defines = mm_alloc(sizeof(struct _defines));
93 :
94 : /* look for = sign */
95 0 : ptr = strchr(define_copy, '=');
96 0 : if (ptr != NULL)
97 : {
98 : char *tmp;
99 :
100 : /* symbol has a value */
101 0 : for (tmp = ptr - 1; *tmp == ' '; tmp--);
102 0 : tmp[1] = '\0';
103 0 : defines->olddef = define_copy;
104 0 : defines->newdef = ptr + 1;
105 : }
106 : else
107 : {
108 0 : defines->olddef = define_copy;
109 0 : defines->newdef = mm_strdup("1");
110 : }
111 0 : defines->pertinent = true;
112 0 : defines->used = NULL;
113 0 : defines->next = pd;
114 0 : }
115 :
116 : #define ECPG_GETOPT_LONG_REGRESSION 1
117 : int
118 128 : main(int argc, char *const argv[])
119 : {
120 : static struct option ecpg_options[] = {
121 : {"regression", no_argument, NULL, ECPG_GETOPT_LONG_REGRESSION},
122 : {NULL, 0, NULL, 0}
123 : };
124 :
125 : int fnr,
126 : c,
127 128 : out_option = 0;
128 128 : bool verbose = false,
129 128 : header_mode = false;
130 : struct _include_path *ip;
131 : const char *progname;
132 : char my_exec_path[MAXPGPATH];
133 : char include_path[MAXPGPATH];
134 :
135 128 : set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("ecpg"));
136 :
137 128 : progname = get_progname(argv[0]);
138 :
139 128 : if (find_my_exec(argv[0], my_exec_path) < 0)
140 : {
141 0 : fprintf(stderr, _("%s: could not locate my own executable path\n"), argv[0]);
142 0 : return ILLEGAL_OPTION;
143 : }
144 :
145 128 : if (argc > 1)
146 : {
147 128 : if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
148 : {
149 0 : help(progname);
150 0 : exit(0);
151 : }
152 128 : if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
153 : {
154 0 : printf("ecpg (PostgreSQL) %s\n", PG_VERSION);
155 0 : exit(0);
156 : }
157 : }
158 :
159 128 : output_filename = NULL;
160 672 : while ((c = getopt_long(argc, argv, "cC:dD:hiI:o:r:tv", ecpg_options, NULL)) != -1)
161 : {
162 544 : switch (c)
163 : {
164 4 : case 'c':
165 4 : auto_create_c = true;
166 4 : break;
167 20 : case 'C':
168 20 : if (pg_strcasecmp(optarg, "INFORMIX") == 0 || pg_strcasecmp(optarg, "INFORMIX_SE") == 0)
169 18 : {
170 : char pkginclude_path[MAXPGPATH];
171 : char informix_path[MAXPGPATH];
172 :
173 18 : compat = (pg_strcasecmp(optarg, "INFORMIX") == 0) ? ECPG_COMPAT_INFORMIX : ECPG_COMPAT_INFORMIX_SE;
174 18 : get_pkginclude_path(my_exec_path, pkginclude_path);
175 18 : snprintf(informix_path, MAXPGPATH, "%s/informix/esql", pkginclude_path);
176 18 : add_include_path(informix_path);
177 : }
178 2 : else if (pg_strcasecmp(optarg, "ORACLE") == 0)
179 : {
180 2 : compat = ECPG_COMPAT_ORACLE;
181 : }
182 : else
183 : {
184 0 : fprintf(stderr, _("Try \"%s --help\" for more information.\n"), argv[0]);
185 0 : return ILLEGAL_OPTION;
186 : }
187 20 : break;
188 0 : case 'd':
189 : #ifdef YYDEBUG
190 : base_yydebug = 1;
191 : #else
192 0 : fprintf(stderr, _("%s: parser debug support (-d) not available\n"),
193 : progname);
194 : #endif
195 0 : break;
196 0 : case 'D':
197 0 : add_preprocessor_define(optarg);
198 0 : break;
199 0 : case 'h':
200 0 : header_mode = true;
201 : /* this must include "-c" to make sense: */
202 0 : auto_create_c = true;
203 0 : break;
204 2 : case 'i':
205 2 : system_includes = true;
206 2 : break;
207 256 : case 'I':
208 256 : add_include_path(optarg);
209 256 : break;
210 128 : case 'o':
211 128 : output_filename = mm_strdup(optarg);
212 128 : if (strcmp(output_filename, "-") == 0)
213 0 : base_yyout = stdout;
214 : else
215 128 : base_yyout = fopen(output_filename, PG_BINARY_W);
216 :
217 128 : if (base_yyout == NULL)
218 : {
219 0 : fprintf(stderr, _("%s: could not open file \"%s\": %s\n"),
220 0 : progname, output_filename, strerror(errno));
221 0 : output_filename = NULL;
222 : }
223 : else
224 128 : out_option = 1;
225 128 : break;
226 6 : case 'r':
227 6 : if (pg_strcasecmp(optarg, "no_indicator") == 0)
228 2 : force_indicator = false;
229 4 : else if (pg_strcasecmp(optarg, "prepare") == 0)
230 2 : auto_prepare = true;
231 2 : else if (pg_strcasecmp(optarg, "questionmarks") == 0)
232 2 : questionmarks = true;
233 : else
234 : {
235 0 : fprintf(stderr, _("Try \"%s --help\" for more information.\n"), argv[0]);
236 0 : return ILLEGAL_OPTION;
237 : }
238 6 : break;
239 0 : case 't':
240 0 : autocommit = true;
241 0 : break;
242 0 : case 'v':
243 0 : verbose = true;
244 0 : break;
245 128 : case ECPG_GETOPT_LONG_REGRESSION:
246 128 : regression_mode = true;
247 128 : break;
248 0 : default:
249 0 : fprintf(stderr, _("Try \"%s --help\" for more information.\n"), argv[0]);
250 0 : return ILLEGAL_OPTION;
251 : }
252 : }
253 :
254 128 : add_include_path(".");
255 128 : add_include_path("/usr/local/include");
256 128 : get_include_path(my_exec_path, include_path);
257 128 : add_include_path(include_path);
258 128 : add_include_path("/usr/include");
259 :
260 128 : if (verbose)
261 : {
262 0 : fprintf(stderr,
263 0 : _("%s, the PostgreSQL embedded C preprocessor, version %s\n"),
264 : progname, PG_VERSION);
265 0 : fprintf(stderr, _("EXEC SQL INCLUDE ... search starts here:\n"));
266 0 : for (ip = include_paths; ip != NULL; ip = ip->next)
267 0 : fprintf(stderr, " %s\n", ip->path);
268 0 : fprintf(stderr, _("end of search list\n"));
269 0 : return 0;
270 : }
271 :
272 128 : if (optind >= argc) /* no files specified */
273 : {
274 0 : fprintf(stderr, _("%s: no input files specified\n"), progname);
275 0 : fprintf(stderr, _("Try \"%s --help\" for more information.\n"), argv[0]);
276 0 : return ILLEGAL_OPTION;
277 : }
278 : else
279 : {
280 : /* after the options there must not be anything but filenames */
281 256 : for (fnr = optind; fnr < argc; fnr++)
282 : {
283 : char *ptr2ext;
284 :
285 : /* If argv[fnr] is "-" we have to read from stdin */
286 128 : if (strcmp(argv[fnr], "-") == 0)
287 : {
288 0 : input_filename = mm_alloc(strlen("stdin") + 1);
289 0 : strcpy(input_filename, "stdin");
290 0 : base_yyin = stdin;
291 : }
292 : else
293 : {
294 128 : input_filename = mm_alloc(strlen(argv[fnr]) + 5);
295 128 : strcpy(input_filename, argv[fnr]);
296 :
297 : /* take care of relative paths */
298 128 : ptr2ext = last_dir_separator(input_filename);
299 128 : ptr2ext = (ptr2ext ? strrchr(ptr2ext, '.') : strrchr(input_filename, '.'));
300 :
301 : /* no extension? */
302 128 : if (ptr2ext == NULL)
303 : {
304 0 : ptr2ext = input_filename + strlen(input_filename);
305 :
306 : /* no extension => add .pgc or .pgh */
307 0 : ptr2ext[0] = '.';
308 0 : ptr2ext[1] = 'p';
309 0 : ptr2ext[2] = 'g';
310 0 : ptr2ext[3] = (header_mode == true) ? 'h' : 'c';
311 0 : ptr2ext[4] = '\0';
312 : }
313 :
314 128 : base_yyin = fopen(input_filename, PG_BINARY_R);
315 : }
316 :
317 128 : if (out_option == 0) /* calculate the output name */
318 : {
319 0 : if (strcmp(input_filename, "stdin") == 0)
320 0 : base_yyout = stdout;
321 : else
322 : {
323 0 : output_filename = mm_alloc(strlen(input_filename) + 3);
324 0 : strcpy(output_filename, input_filename);
325 :
326 0 : ptr2ext = strrchr(output_filename, '.');
327 : /* make extension = .c resp. .h */
328 0 : ptr2ext[1] = (header_mode == true) ? 'h' : 'c';
329 0 : ptr2ext[2] = '\0';
330 :
331 0 : base_yyout = fopen(output_filename, PG_BINARY_W);
332 0 : if (base_yyout == NULL)
333 : {
334 0 : fprintf(stderr, _("%s: could not open file \"%s\": %s\n"),
335 0 : progname, output_filename, strerror(errno));
336 0 : free(output_filename);
337 0 : output_filename = NULL;
338 0 : free(input_filename);
339 0 : continue;
340 : }
341 : }
342 : }
343 :
344 128 : if (base_yyin == NULL)
345 0 : fprintf(stderr, _("%s: could not open file \"%s\": %s\n"),
346 0 : progname, argv[fnr], strerror(errno));
347 : else
348 : {
349 : struct cursor *ptr;
350 : struct _defines *defptr;
351 : struct typedefs *typeptr;
352 : struct declared_list *list;
353 :
354 : /* remove old cursor definitions if any are still there */
355 128 : for (ptr = cur; ptr != NULL;)
356 : {
357 0 : struct cursor *this = ptr;
358 : struct arguments *l1,
359 : *l2;
360 :
361 0 : free(ptr->command);
362 0 : free(ptr->connection);
363 0 : free(ptr->name);
364 0 : for (l1 = ptr->argsinsert; l1; l1 = l2)
365 : {
366 0 : l2 = l1->next;
367 0 : free(l1);
368 : }
369 0 : for (l1 = ptr->argsresult; l1; l1 = l2)
370 : {
371 0 : l2 = l1->next;
372 0 : free(l1);
373 : }
374 0 : ptr = ptr->next;
375 0 : free(this);
376 : }
377 128 : cur = NULL;
378 :
379 : /* remove old declared statements if any are still there */
380 128 : for (list = g_declared_list; list != NULL;)
381 : {
382 0 : struct declared_list *this = list;
383 :
384 0 : list = list->next;
385 0 : free(this);
386 : }
387 :
388 : /* remove non-pertinent old defines as well */
389 128 : while (defines && !defines->pertinent)
390 : {
391 0 : defptr = defines;
392 0 : defines = defines->next;
393 :
394 0 : free(defptr->newdef);
395 0 : free(defptr->olddef);
396 0 : free(defptr);
397 : }
398 :
399 128 : for (defptr = defines; defptr != NULL; defptr = defptr->next)
400 : {
401 0 : struct _defines *this = defptr->next;
402 :
403 0 : if (this && !this->pertinent)
404 : {
405 0 : defptr->next = this->next;
406 :
407 0 : free(this->newdef);
408 0 : free(this->olddef);
409 0 : free(this);
410 : }
411 : }
412 :
413 : /* and old typedefs */
414 128 : for (typeptr = types; typeptr != NULL;)
415 : {
416 0 : struct typedefs *this = typeptr;
417 :
418 0 : free(typeptr->name);
419 0 : ECPGfree_struct_member(typeptr->struct_member_list);
420 0 : free(typeptr->type);
421 0 : typeptr = typeptr->next;
422 0 : free(this);
423 : }
424 128 : types = NULL;
425 :
426 : /* initialize whenever structures */
427 128 : memset(&when_error, 0, sizeof(struct when));
428 128 : memset(&when_nf, 0, sizeof(struct when));
429 128 : memset(&when_warn, 0, sizeof(struct when));
430 :
431 : /* and structure member lists */
432 128 : memset(struct_member_list, 0, sizeof(struct_member_list));
433 :
434 : /*
435 : * and our variable counter for out of scope cursors'
436 : * variables
437 : */
438 128 : ecpg_internal_var = 0;
439 :
440 : /* finally the actual connection */
441 128 : connection = NULL;
442 :
443 : /* initialize lex */
444 128 : lex_init();
445 :
446 : /* we need several includes */
447 : /* but not if we are in header mode */
448 128 : if (regression_mode)
449 128 : fprintf(base_yyout, "/* Processed by ecpg (regression mode) */\n");
450 : else
451 0 : fprintf(base_yyout, "/* Processed by ecpg (%s) */\n", PG_VERSION);
452 :
453 128 : if (header_mode == false)
454 : {
455 128 : fprintf(base_yyout, "/* These include files are added by the preprocessor */\n#include <ecpglib.h>\n#include <ecpgerrno.h>\n#include <sqlca.h>\n");
456 :
457 : /* add some compatibility headers */
458 128 : if (INFORMIX_MODE)
459 18 : fprintf(base_yyout, "/* Needed for informix compatibility */\n#include <ecpg_informix.h>\n");
460 :
461 128 : fprintf(base_yyout, "/* End of automatic include section */\n");
462 : }
463 :
464 128 : if (regression_mode)
465 128 : fprintf(base_yyout, "#define ECPGdebug(X,Y) ECPGdebug((X)+100,(Y))\n");
466 :
467 128 : output_line_number();
468 :
469 : /* and parse the source */
470 128 : base_yyparse();
471 :
472 : /*
473 : * Check whether all cursors were indeed opened. It does not
474 : * really make sense to declare a cursor but not open it.
475 : */
476 202 : for (ptr = cur; ptr != NULL; ptr = ptr->next)
477 74 : if (!(ptr->opened))
478 0 : mmerror(PARSE_ERROR, ET_WARNING, "cursor \"%s\" has been declared but not opened", ptr->name);
479 :
480 128 : if (base_yyin != NULL && base_yyin != stdin)
481 128 : fclose(base_yyin);
482 128 : if (out_option == 0 && base_yyout != stdout)
483 0 : fclose(base_yyout);
484 :
485 : /*
486 : * If there was an error, delete the output file.
487 : */
488 128 : if (ret_value != 0)
489 : {
490 0 : if (strcmp(output_filename, "-") != 0 && unlink(output_filename) != 0)
491 0 : fprintf(stderr, _("could not remove output file \"%s\"\n"), output_filename);
492 : }
493 : }
494 :
495 128 : if (output_filename && out_option == 0)
496 : {
497 0 : free(output_filename);
498 0 : output_filename = NULL;
499 : }
500 :
501 128 : free(input_filename);
502 : }
503 : }
504 128 : return ret_value;
505 : }
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