Line data Source code
1 : /* src/interfaces/ecpg/preproc/ecpg.c */
2 :
3 : /* Main for ecpg, the PostgreSQL embedded SQL precompiler. */
4 : /* Copyright (c) 1996-2025, 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 : static const char *progname;
24 : char *output_filename;
25 :
26 : enum COMPAT_MODE compat = ECPG_COMPAT_PGSQL;
27 :
28 : struct _include_path *include_paths = NULL;
29 : struct cursor *cur = NULL;
30 : struct typedefs *types = NULL;
31 : struct _defines *defines = NULL;
32 : struct declared_list *g_declared_list = NULL;
33 :
34 : static void
35 2 : help(const char *progname)
36 : {
37 2 : printf(_("%s is the PostgreSQL embedded SQL preprocessor for C programs.\n\n"),
38 : progname);
39 2 : printf(_("Usage:\n"
40 : " %s [OPTION]... FILE...\n\n"),
41 : progname);
42 2 : printf(_("Options:\n"));
43 2 : printf(_(" -c automatically generate C code from embedded SQL code;\n"
44 : " this affects EXEC SQL TYPE\n"));
45 2 : printf(_(" -C MODE set compatibility mode; MODE can be one of\n"
46 : " \"INFORMIX\", \"INFORMIX_SE\", \"ORACLE\"\n"));
47 : #ifdef YYDEBUG
48 : printf(_(" -d generate parser debug output\n"));
49 : #endif
50 2 : printf(_(" -D SYMBOL define SYMBOL\n"));
51 2 : printf(_(" -h parse a header file, this option includes option \"-c\"\n"));
52 2 : printf(_(" -i parse system include files as well\n"));
53 2 : printf(_(" -I DIRECTORY search DIRECTORY for include files\n"));
54 2 : printf(_(" -o OUTFILE write result to OUTFILE\n"));
55 2 : printf(_(" -r OPTION specify run-time behavior; OPTION can be:\n"
56 : " \"no_indicator\", \"prepare\", \"questionmarks\"\n"));
57 2 : printf(_(" --regression run in regression testing mode\n"));
58 2 : printf(_(" -t turn on autocommit of transactions\n"));
59 2 : printf(_(" -V, --version output version information, then exit\n"));
60 2 : printf(_(" -?, --help show this help, then exit\n"));
61 2 : printf(_("\nIf no output file is specified, the name is formed by adding .c to the\n"
62 : "input file name, after stripping off .pgc if present.\n"));
63 2 : printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
64 2 : printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
65 2 : }
66 :
67 : static void
68 838 : add_include_path(char *path)
69 : {
70 838 : struct _include_path *ip = include_paths,
71 : *new;
72 :
73 838 : new = mm_alloc(sizeof(struct _include_path));
74 838 : new->path = path;
75 838 : new->next = NULL;
76 :
77 838 : if (ip == NULL)
78 138 : include_paths = new;
79 : else
80 : {
81 2144 : for (; ip->next != NULL; ip = ip->next);
82 700 : ip->next = new;
83 : }
84 838 : }
85 :
86 : /*
87 : * Process a command line -D switch
88 : */
89 : static void
90 2 : add_preprocessor_define(char *define)
91 : {
92 : /* copy the argument to avoid relying on argv storage */
93 2 : char *define_copy = mm_strdup(define);
94 : char *ptr;
95 : struct _defines *newdef;
96 :
97 2 : newdef = mm_alloc(sizeof(struct _defines));
98 :
99 : /* look for = sign */
100 2 : ptr = strchr(define_copy, '=');
101 2 : if (ptr != NULL)
102 : {
103 : /* symbol has a value */
104 : char *tmp;
105 :
106 : /* strip any spaces between name and '=' */
107 2 : for (tmp = ptr - 1; tmp >= define_copy && *tmp == ' '; tmp--);
108 2 : tmp[1] = '\0';
109 :
110 : /*
111 : * Note we don't bother to separately malloc cmdvalue; it will never
112 : * be freed so that's not necessary.
113 : */
114 2 : newdef->cmdvalue = ptr + 1;
115 : }
116 : else
117 : {
118 : /* define it as "1"; again no need to malloc it */
119 0 : newdef->cmdvalue = "1";
120 : }
121 2 : newdef->name = define_copy;
122 2 : newdef->value = mm_strdup(newdef->cmdvalue);
123 2 : newdef->used = NULL;
124 2 : newdef->next = defines;
125 2 : defines = newdef;
126 2 : }
127 :
128 : #define ECPG_GETOPT_LONG_REGRESSION 1
129 : int
130 144 : main(int argc, char *const argv[])
131 : {
132 : static struct option ecpg_options[] = {
133 : {"regression", no_argument, NULL, ECPG_GETOPT_LONG_REGRESSION},
134 : {NULL, 0, NULL, 0}
135 : };
136 :
137 : int fnr,
138 : c,
139 144 : out_option = 0;
140 144 : bool verbose = false,
141 144 : header_mode = false;
142 : struct _include_path *ip;
143 : char my_exec_path[MAXPGPATH];
144 : char include_path[MAXPGPATH];
145 :
146 144 : set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("ecpg"));
147 :
148 144 : progname = get_progname(argv[0]);
149 :
150 144 : if (find_my_exec(argv[0], my_exec_path) < 0)
151 : {
152 0 : fprintf(stderr, _("%s: could not locate my own executable path\n"), argv[0]);
153 0 : return ILLEGAL_OPTION;
154 : }
155 :
156 144 : if (argc > 1)
157 : {
158 142 : if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
159 : {
160 2 : help(progname);
161 2 : exit(0);
162 : }
163 140 : if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
164 : {
165 2 : printf("ecpg (PostgreSQL) %s\n", PG_VERSION);
166 2 : exit(0);
167 : }
168 : }
169 :
170 140 : output_filename = NULL;
171 706 : while ((c = getopt_long(argc, argv, "cC:dD:hiI:o:r:tv", ecpg_options, NULL)) != -1)
172 : {
173 568 : switch (c)
174 : {
175 4 : case 'c':
176 4 : auto_create_c = true;
177 4 : break;
178 24 : case 'C':
179 24 : if (pg_strcasecmp(optarg, "INFORMIX") == 0 || pg_strcasecmp(optarg, "INFORMIX_SE") == 0)
180 22 : {
181 : char pkginclude_path[MAXPGPATH];
182 : char informix_path[MAXPGPATH];
183 :
184 22 : compat = (pg_strcasecmp(optarg, "INFORMIX") == 0) ? ECPG_COMPAT_INFORMIX : ECPG_COMPAT_INFORMIX_SE;
185 22 : get_pkginclude_path(my_exec_path, pkginclude_path);
186 22 : snprintf(informix_path, MAXPGPATH, "%s/informix/esql", pkginclude_path);
187 22 : add_include_path(informix_path);
188 : }
189 2 : else if (pg_strcasecmp(optarg, "ORACLE") == 0)
190 : {
191 2 : compat = ECPG_COMPAT_ORACLE;
192 : }
193 : else
194 : {
195 0 : fprintf(stderr, _("Try \"%s --help\" for more information.\n"), argv[0]);
196 0 : return ILLEGAL_OPTION;
197 : }
198 24 : break;
199 0 : case 'd':
200 : #ifdef YYDEBUG
201 : base_yydebug = 1;
202 : #else
203 0 : fprintf(stderr, _("%s: parser debug support (-d) not available\n"),
204 : progname);
205 : #endif
206 0 : break;
207 2 : case 'D':
208 2 : add_preprocessor_define(optarg);
209 2 : break;
210 0 : case 'h':
211 0 : header_mode = true;
212 : /* this must include "-c" to make sense: */
213 0 : auto_create_c = true;
214 0 : break;
215 2 : case 'i':
216 2 : system_includes = true;
217 2 : break;
218 264 : case 'I':
219 264 : add_include_path(optarg);
220 264 : break;
221 132 : case 'o':
222 132 : output_filename = mm_strdup(optarg);
223 132 : if (strcmp(output_filename, "-") == 0)
224 0 : base_yyout = stdout;
225 : else
226 132 : base_yyout = fopen(output_filename, PG_BINARY_W);
227 :
228 132 : if (base_yyout == NULL)
229 : {
230 0 : fprintf(stderr, _("%s: could not open file \"%s\": %m\n"),
231 : progname, output_filename);
232 0 : output_filename = NULL;
233 : }
234 : else
235 132 : out_option = 1;
236 132 : break;
237 6 : case 'r':
238 6 : if (pg_strcasecmp(optarg, "no_indicator") == 0)
239 2 : force_indicator = false;
240 4 : else if (pg_strcasecmp(optarg, "prepare") == 0)
241 2 : auto_prepare = true;
242 2 : else if (pg_strcasecmp(optarg, "questionmarks") == 0)
243 2 : questionmarks = true;
244 : else
245 : {
246 0 : fprintf(stderr, _("Try \"%s --help\" for more information.\n"), argv[0]);
247 0 : return ILLEGAL_OPTION;
248 : }
249 6 : break;
250 0 : case 't':
251 0 : autocommit = true;
252 0 : break;
253 0 : case 'v':
254 0 : verbose = true;
255 0 : break;
256 132 : case ECPG_GETOPT_LONG_REGRESSION:
257 132 : regression_mode = true;
258 132 : break;
259 2 : default:
260 2 : fprintf(stderr, _("Try \"%s --help\" for more information.\n"), argv[0]);
261 2 : return ILLEGAL_OPTION;
262 : }
263 : }
264 :
265 138 : add_include_path(".");
266 138 : add_include_path("/usr/local/include");
267 138 : get_include_path(my_exec_path, include_path);
268 138 : add_include_path(include_path);
269 138 : add_include_path("/usr/include");
270 :
271 138 : if (verbose)
272 : {
273 0 : fprintf(stderr,
274 0 : _("%s, the PostgreSQL embedded C preprocessor, version %s\n"),
275 : progname, PG_VERSION);
276 0 : fprintf(stderr, _("EXEC SQL INCLUDE ... search starts here:\n"));
277 0 : for (ip = include_paths; ip != NULL; ip = ip->next)
278 0 : fprintf(stderr, " %s\n", ip->path);
279 0 : fprintf(stderr, _("end of search list\n"));
280 0 : return 0;
281 : }
282 :
283 138 : if (optind >= argc) /* no files specified */
284 : {
285 2 : fprintf(stderr, _("%s: no input files specified\n"), progname);
286 2 : fprintf(stderr, _("Try \"%s --help\" for more information.\n"), argv[0]);
287 2 : return ILLEGAL_OPTION;
288 : }
289 : else
290 : {
291 : /* after the options there must not be anything but filenames */
292 272 : for (fnr = optind; fnr < argc; fnr++)
293 : {
294 : char *ptr2ext;
295 :
296 : /* If argv[fnr] is "-" we have to read from stdin */
297 138 : if (strcmp(argv[fnr], "-") == 0)
298 : {
299 0 : input_filename = mm_alloc(strlen("stdin") + 1);
300 0 : strcpy(input_filename, "stdin");
301 0 : base_yyin = stdin;
302 : }
303 : else
304 : {
305 138 : input_filename = mm_alloc(strlen(argv[fnr]) + 5);
306 138 : strcpy(input_filename, argv[fnr]);
307 :
308 : /* take care of relative paths */
309 138 : ptr2ext = last_dir_separator(input_filename);
310 138 : ptr2ext = (ptr2ext ? strrchr(ptr2ext, '.') : strrchr(input_filename, '.'));
311 :
312 : /* no extension? */
313 138 : if (ptr2ext == NULL)
314 : {
315 0 : ptr2ext = input_filename + strlen(input_filename);
316 :
317 : /* no extension => add .pgc or .pgh */
318 0 : ptr2ext[0] = '.';
319 0 : ptr2ext[1] = 'p';
320 0 : ptr2ext[2] = 'g';
321 0 : ptr2ext[3] = (header_mode == true) ? 'h' : 'c';
322 0 : ptr2ext[4] = '\0';
323 : }
324 :
325 138 : base_yyin = fopen(input_filename, PG_BINARY_R);
326 : }
327 :
328 138 : if (out_option == 0) /* calculate the output name */
329 : {
330 4 : if (strcmp(input_filename, "stdin") == 0)
331 0 : base_yyout = stdout;
332 : else
333 : {
334 4 : output_filename = mm_alloc(strlen(input_filename) + 3);
335 4 : strcpy(output_filename, input_filename);
336 :
337 4 : ptr2ext = strrchr(output_filename, '.');
338 : /* make extension = .c resp. .h */
339 4 : ptr2ext[1] = (header_mode == true) ? 'h' : 'c';
340 4 : ptr2ext[2] = '\0';
341 :
342 4 : base_yyout = fopen(output_filename, PG_BINARY_W);
343 4 : if (base_yyout == NULL)
344 : {
345 0 : fprintf(stderr, _("%s: could not open file \"%s\": %m\n"),
346 : progname, output_filename);
347 0 : free(output_filename);
348 0 : output_filename = NULL;
349 0 : free(input_filename);
350 0 : continue;
351 : }
352 : }
353 : }
354 :
355 138 : if (base_yyin == NULL)
356 0 : fprintf(stderr, _("%s: could not open file \"%s\": %m\n"),
357 0 : progname, argv[fnr]);
358 : else
359 : {
360 : struct cursor *ptr;
361 : struct _defines *defptr;
362 : struct _defines *prevdefptr;
363 : struct _defines *nextdefptr;
364 : struct typedefs *typeptr;
365 : struct declared_list *list;
366 :
367 : /* remove old cursor definitions if any are still there */
368 138 : for (ptr = cur; ptr != NULL;)
369 : {
370 0 : struct cursor *this = ptr;
371 : struct arguments *l1,
372 : *l2;
373 :
374 0 : free(ptr->command);
375 0 : free(ptr->connection);
376 0 : free(ptr->name);
377 0 : for (l1 = ptr->argsinsert; l1; l1 = l2)
378 : {
379 0 : l2 = l1->next;
380 0 : free(l1);
381 : }
382 0 : for (l1 = ptr->argsresult; l1; l1 = l2)
383 : {
384 0 : l2 = l1->next;
385 0 : free(l1);
386 : }
387 0 : ptr = ptr->next;
388 0 : free(this);
389 : }
390 138 : cur = NULL;
391 :
392 : /* remove old declared statements if any are still there */
393 138 : for (list = g_declared_list; list != NULL;)
394 : {
395 0 : struct declared_list *this = list;
396 :
397 0 : list = list->next;
398 0 : free(this);
399 : }
400 :
401 : /* restore defines to their command-line state */
402 138 : prevdefptr = NULL;
403 144 : for (defptr = defines; defptr != NULL; defptr = nextdefptr)
404 : {
405 6 : nextdefptr = defptr->next;
406 6 : if (defptr->cmdvalue != NULL)
407 : {
408 : /* keep it, resetting the value */
409 4 : free(defptr->value);
410 4 : defptr->value = mm_strdup(defptr->cmdvalue);
411 4 : prevdefptr = defptr;
412 : }
413 : else
414 : {
415 : /* remove it */
416 2 : if (prevdefptr != NULL)
417 0 : prevdefptr->next = nextdefptr;
418 : else
419 2 : defines = nextdefptr;
420 2 : free(defptr->name);
421 2 : free(defptr->value);
422 2 : free(defptr);
423 : }
424 : }
425 :
426 : /* and old typedefs */
427 138 : for (typeptr = types; typeptr != NULL;)
428 : {
429 0 : struct typedefs *this = typeptr;
430 :
431 0 : free(typeptr->name);
432 0 : ECPGfree_struct_member(typeptr->struct_member_list);
433 0 : free(typeptr->type);
434 0 : typeptr = typeptr->next;
435 0 : free(this);
436 : }
437 138 : types = NULL;
438 :
439 : /* initialize whenever structures */
440 138 : memset(&when_error, 0, sizeof(struct when));
441 138 : memset(&when_nf, 0, sizeof(struct when));
442 138 : memset(&when_warn, 0, sizeof(struct when));
443 :
444 : /* and structure member lists */
445 138 : memset(struct_member_list, 0, sizeof(struct_member_list));
446 :
447 : /*
448 : * and our variable counter for out of scope cursors'
449 : * variables
450 : */
451 138 : ecpg_internal_var = 0;
452 :
453 : /* finally the actual connection */
454 138 : connection = NULL;
455 :
456 : /* initialize lex */
457 138 : lex_init();
458 :
459 : /* we need several includes */
460 : /* but not if we are in header mode */
461 138 : if (regression_mode)
462 134 : fprintf(base_yyout, "/* Processed by ecpg (regression mode) */\n");
463 : else
464 4 : fprintf(base_yyout, "/* Processed by ecpg (%s) */\n", PG_VERSION);
465 :
466 138 : if (header_mode == false)
467 : {
468 138 : fprintf(base_yyout, "/* These include files are added by the preprocessor */\n#include <ecpglib.h>\n#include <ecpgerrno.h>\n#include <sqlca.h>\n");
469 :
470 : /* add some compatibility headers */
471 138 : if (INFORMIX_MODE)
472 22 : fprintf(base_yyout, "/* Needed for informix compatibility */\n#include <ecpg_informix.h>\n");
473 :
474 138 : fprintf(base_yyout, "/* End of automatic include section */\n");
475 : }
476 :
477 138 : if (regression_mode)
478 134 : fprintf(base_yyout, "#define ECPGdebug(X,Y) ECPGdebug((X)+100,(Y))\n");
479 :
480 138 : output_line_number();
481 :
482 : /* and parse the source */
483 138 : base_yyparse();
484 :
485 : /*
486 : * Check whether all cursors were indeed opened. It does not
487 : * really make sense to declare a cursor but not open it.
488 : */
489 218 : for (ptr = cur; ptr != NULL; ptr = ptr->next)
490 82 : if (!(ptr->opened))
491 8 : mmerror(PARSE_ERROR, ET_WARNING, "cursor \"%s\" has been declared but not opened", ptr->name);
492 :
493 136 : if (base_yyin != NULL && base_yyin != stdin)
494 136 : fclose(base_yyin);
495 136 : if (out_option == 0 && base_yyout != stdout)
496 2 : fclose(base_yyout);
497 :
498 : /*
499 : * If there was an error, delete the output file.
500 : */
501 136 : if (ret_value != 0)
502 : {
503 2 : if (strcmp(output_filename, "-") != 0 && unlink(output_filename) != 0)
504 0 : fprintf(stderr, _("could not remove output file \"%s\"\n"), output_filename);
505 : }
506 : }
507 :
508 136 : if (output_filename && out_option == 0)
509 : {
510 2 : free(output_filename);
511 2 : output_filename = NULL;
512 : }
513 :
514 136 : free(input_filename);
515 : }
516 : }
517 134 : return ret_value;
518 : }
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