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Commit | Line | Data |
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726f6388 JA |
1 | /* mkbuiltins.c - Create builtins.c, builtext.h, and builtdoc.c from |
2 | a single source file called builtins.def. */ | |
3 | ||
4 | /* Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc. | |
5 | ||
6 | This file is part of GNU Bash, the Bourne Again SHell. | |
7 | ||
8 | Bash is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
bb70624e | 10 | Software Foundation; either version 2, or (at your option) any later |
726f6388 JA |
11 | version. |
12 | ||
13 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License along | |
19 | with Bash; see the file COPYING. If not, write to the Free Software | |
bb70624e | 20 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
726f6388 | 21 | |
ccc6cda3 JA |
22 | #include <config.h> |
23 | ||
24 | #if defined (HAVE_UNISTD_H) | |
cce855bc JA |
25 | # ifdef _MINIX |
26 | # include <sys/types.h> | |
27 | # endif | |
ccc6cda3 JA |
28 | # include <unistd.h> |
29 | #endif | |
30 | ||
cce855bc | 31 | #ifndef _MINIX |
d166f048 | 32 | #include "../bashtypes.h" |
726f6388 | 33 | #include <sys/file.h> |
cce855bc JA |
34 | #endif |
35 | ||
bb70624e JA |
36 | #include "posixstat.h" |
37 | #include "filecntl.h" | |
726f6388 | 38 | |
d166f048 JA |
39 | #include "../bashansi.h" |
40 | #include <stdio.h> | |
726f6388 JA |
41 | |
42 | #define DOCFILE "builtins.texi" | |
43 | ||
44 | static char *xmalloc (), *xrealloc (); | |
45 | ||
46 | #if !defined (__STDC__) && !defined (strcpy) | |
47 | extern char *strcpy (); | |
48 | #endif /* !__STDC__ && !strcpy */ | |
49 | ||
50 | #define savestring(x) strcpy (xmalloc (1 + strlen (x)), (x)) | |
51 | #define whitespace(c) (((c) == ' ') || ((c) == '\t')) | |
52 | ||
53 | /* Flag values that builtins can have. */ | |
54 | #define BUILTIN_FLAG_SPECIAL 0x01 | |
ccc6cda3 | 55 | #define BUILTIN_FLAG_ASSIGNMENT 0x02 |
726f6388 JA |
56 | |
57 | /* If this stream descriptor is non-zero, then write | |
58 | texinfo documentation to it. */ | |
59 | FILE *documentation_file = (FILE *)NULL; | |
60 | ||
61 | /* Non-zero means to only produce documentation. */ | |
62 | int only_documentation = 0; | |
63 | ||
64 | /* Non-zero means to not do any productions. */ | |
65 | int inhibit_production = 0; | |
66 | ||
67 | #if !defined (OLDCODE) | |
68 | int no_long_document = 0; | |
69 | #endif /* !OLDCODE */ | |
70 | ||
71 | /* The name of a directory to precede the filename when reporting | |
72 | errors. */ | |
73 | char *error_directory = (char *)NULL; | |
74 | ||
75 | /* The name of the structure file. */ | |
76 | char *struct_filename = (char *)NULL; | |
77 | ||
78 | /* The name of the external declaration file. */ | |
79 | char *extern_filename = (char *)NULL; | |
80 | ||
81 | /* Here is a structure for manipulating arrays of data. */ | |
82 | typedef struct { | |
83 | int size; /* Number of slots allocated to array. */ | |
84 | int sindex; /* Current location in array. */ | |
85 | int width; /* Size of each element. */ | |
86 | int growth_rate; /* How fast to grow. */ | |
87 | char **array; /* The array itself. */ | |
88 | } ARRAY; | |
89 | ||
90 | /* Here is a structure defining a single BUILTIN. */ | |
91 | typedef struct { | |
92 | char *name; /* The name of this builtin. */ | |
93 | char *function; /* The name of the function to call. */ | |
94 | char *shortdoc; /* The short documentation for this builtin. */ | |
95 | char *docname; /* Possible name for documentation string. */ | |
96 | ARRAY *longdoc; /* The long documentation for this builtin. */ | |
97 | ARRAY *dependencies; /* Null terminated array of #define names. */ | |
98 | int flags; /* Flags for this builtin. */ | |
99 | } BUILTIN_DESC; | |
100 | ||
101 | /* Here is a structure which defines a DEF file. */ | |
102 | typedef struct { | |
103 | char *filename; /* The name of the input def file. */ | |
104 | ARRAY *lines; /* The contents of the file. */ | |
105 | int line_number; /* The current line number. */ | |
106 | char *production; /* The name of the production file. */ | |
107 | FILE *output; /* Open file stream for PRODUCTION. */ | |
108 | ARRAY *builtins; /* Null terminated array of BUILTIN_DESC *. */ | |
109 | } DEF_FILE; | |
110 | ||
111 | /* The array of all builtins encountered during execution of this code. */ | |
112 | ARRAY *saved_builtins = (ARRAY *)NULL; | |
113 | ||
114 | /* The Posix.2 so-called `special' builtins. */ | |
115 | char *special_builtins[] = | |
116 | { | |
117 | ":", ".", "source", "break", "continue", "eval", "exec", "exit", | |
118 | "export", "readonly", "return", "set", "shift", "trap", "unset", | |
119 | (char *)NULL | |
120 | }; | |
ccc6cda3 JA |
121 | |
122 | /* The builtin commands that take assignment statements as arguments. */ | |
123 | char *assignment_builtins[] = | |
124 | { | |
125 | "alias", "declare", "export", "local", "readonly", "typeset", | |
126 | (char *)NULL | |
127 | }; | |
128 | ||
129 | /* Forward declarations. */ | |
726f6388 | 130 | static int is_special_builtin (); |
ccc6cda3 JA |
131 | static int is_assignment_builtin (); |
132 | ||
b72432fd JA |
133 | #if !defined (HAVE_RENAME) |
134 | static int rename (); | |
135 | #endif | |
136 | ||
ccc6cda3 JA |
137 | void extract_info (); |
138 | ||
139 | void file_error (); | |
140 | void line_error (); | |
141 | ||
142 | void write_file_headers (); | |
143 | void write_file_footers (); | |
144 | void write_ifdefs (); | |
145 | void write_endifs (); | |
146 | void write_documentation (); | |
147 | void write_longdocs (); | |
148 | void write_builtins (); | |
726f6388 | 149 | |
ccc6cda3 JA |
150 | void free_defs (); |
151 | void add_documentation (); | |
152 | ||
153 | void must_be_building (); | |
154 | void remove_trailing_whitespace (); | |
726f6388 JA |
155 | \f |
156 | /* For each file mentioned on the command line, process it and | |
157 | write the information to STRUCTFILE and EXTERNFILE, while | |
158 | creating the production file if neccessary. */ | |
ccc6cda3 | 159 | int |
726f6388 JA |
160 | main (argc, argv) |
161 | int argc; | |
162 | char **argv; | |
163 | { | |
164 | int arg_index = 1; | |
165 | FILE *structfile, *externfile; | |
166 | char *documentation_filename, *temp_struct_filename; | |
167 | ||
168 | structfile = externfile = (FILE *)NULL; | |
169 | documentation_filename = DOCFILE; | |
170 | temp_struct_filename = (char *)NULL; | |
171 | ||
172 | while (arg_index < argc && argv[arg_index][0] == '-') | |
173 | { | |
174 | char *arg = argv[arg_index++]; | |
175 | ||
176 | if (strcmp (arg, "-externfile") == 0) | |
177 | extern_filename = argv[arg_index++]; | |
178 | else if (strcmp (arg, "-structfile") == 0) | |
179 | struct_filename = argv[arg_index++]; | |
180 | else if (strcmp (arg, "-noproduction") == 0) | |
181 | inhibit_production = 1; | |
182 | else if (strcmp (arg, "-document") == 0) | |
183 | documentation_file = fopen (documentation_filename, "w"); | |
184 | else if (strcmp (arg, "-D") == 0) | |
185 | { | |
186 | int len; | |
187 | ||
188 | if (error_directory) | |
189 | free (error_directory); | |
190 | ||
191 | error_directory = xmalloc (2 + strlen (argv[arg_index])); | |
192 | strcpy (error_directory, argv[arg_index]); | |
193 | len = strlen (error_directory); | |
194 | ||
195 | if (len && error_directory[len - 1] != '/') | |
196 | strcat (error_directory, "/"); | |
197 | ||
198 | arg_index++; | |
199 | } | |
200 | else if (strcmp (arg, "-documentonly") == 0) | |
201 | { | |
202 | only_documentation = 1; | |
203 | documentation_file = fopen (documentation_filename, "w"); | |
204 | } | |
205 | #if !defined (OLDCODE) | |
206 | else if (strcmp (arg, "-nodocument") == 0) | |
207 | no_long_document = 1; | |
28ef6c31 | 208 | #endif /* !OLDCODE */ |
726f6388 JA |
209 | else |
210 | { | |
211 | fprintf (stderr, "%s: Unknown flag %s.\n", argv[0], arg); | |
212 | exit (2); | |
213 | } | |
214 | } | |
215 | ||
216 | /* If there are no files to process, just quit now. */ | |
217 | if (arg_index == argc) | |
218 | exit (0); | |
219 | ||
220 | if (!only_documentation) | |
221 | { | |
222 | /* Open the files. */ | |
223 | if (struct_filename) | |
224 | { | |
225 | temp_struct_filename = xmalloc (15); | |
226 | sprintf (temp_struct_filename, "mk-%d", (int) getpid ()); | |
227 | structfile = fopen (temp_struct_filename, "w"); | |
228 | ||
229 | if (!structfile) | |
230 | file_error (temp_struct_filename); | |
231 | } | |
232 | ||
233 | if (extern_filename) | |
234 | { | |
235 | externfile = fopen (extern_filename, "w"); | |
236 | ||
237 | if (!externfile) | |
238 | file_error (extern_filename); | |
239 | } | |
240 | ||
241 | /* Write out the headers. */ | |
242 | write_file_headers (structfile, externfile); | |
243 | } | |
244 | ||
245 | if (documentation_file) | |
246 | { | |
247 | fprintf (documentation_file, "@c Table of builtins created with %s.\n", | |
248 | argv[0]); | |
249 | fprintf (documentation_file, "@ftable @asis\n"); | |
250 | } | |
251 | ||
252 | /* Process the .def files. */ | |
253 | while (arg_index < argc) | |
254 | { | |
255 | register char *arg; | |
256 | ||
257 | arg = argv[arg_index++]; | |
258 | ||
259 | extract_info (arg, structfile, externfile); | |
260 | } | |
261 | ||
262 | /* Close the files. */ | |
263 | if (!only_documentation) | |
264 | { | |
265 | /* Write the footers. */ | |
266 | write_file_footers (structfile, externfile); | |
267 | ||
268 | if (structfile) | |
269 | { | |
270 | write_longdocs (structfile, saved_builtins); | |
271 | fclose (structfile); | |
b72432fd | 272 | rename (temp_struct_filename, struct_filename); |
726f6388 JA |
273 | } |
274 | ||
275 | if (externfile) | |
276 | fclose (externfile); | |
277 | } | |
278 | ||
279 | if (documentation_file) | |
280 | { | |
281 | fprintf (documentation_file, "@end ftable\n"); | |
282 | fclose (documentation_file); | |
283 | } | |
284 | ||
285 | exit (0); | |
286 | } | |
287 | ||
288 | /* **************************************************************** */ | |
289 | /* */ | |
290 | /* Array Functions and Manipulators */ | |
291 | /* */ | |
292 | /* **************************************************************** */ | |
293 | ||
294 | /* Make a new array, and return a pointer to it. The array will | |
295 | contain elements of size WIDTH, and is initialized to no elements. */ | |
296 | ARRAY * | |
297 | array_create (width) | |
298 | int width; | |
299 | { | |
300 | ARRAY *array; | |
301 | ||
302 | array = (ARRAY *)xmalloc (sizeof (ARRAY)); | |
303 | array->size = 0; | |
304 | array->sindex = 0; | |
305 | array->width = width; | |
306 | ||
307 | /* Default to increasing size in units of 20. */ | |
308 | array->growth_rate = 20; | |
309 | ||
310 | array->array = (char **)NULL; | |
311 | ||
312 | return (array); | |
313 | } | |
314 | ||
315 | /* Copy the array of strings in ARRAY. */ | |
316 | ARRAY * | |
317 | copy_string_array (array) | |
318 | ARRAY *array; | |
319 | { | |
320 | register int i; | |
321 | ARRAY *copy; | |
322 | ||
323 | if (!array) | |
324 | return (ARRAY *)NULL; | |
325 | ||
326 | copy = array_create (sizeof (char *)); | |
327 | ||
328 | copy->size = array->size; | |
329 | copy->sindex = array->sindex; | |
330 | copy->width = array->width; | |
331 | ||
332 | copy->array = (char **)xmalloc ((1 + array->sindex) * sizeof (char *)); | |
333 | ||
334 | for (i = 0; i < array->sindex; i++) | |
335 | copy->array[i] = savestring (array->array[i]); | |
336 | ||
337 | copy->array[i] = (char *)NULL; | |
338 | ||
339 | return (copy); | |
340 | } | |
341 | ||
342 | /* Add ELEMENT to ARRAY, growing the array if neccessary. */ | |
ccc6cda3 | 343 | void |
726f6388 JA |
344 | array_add (element, array) |
345 | char *element; | |
346 | ARRAY *array; | |
347 | { | |
348 | if (array->sindex + 2 > array->size) | |
349 | array->array = (char **)xrealloc | |
350 | (array->array, (array->size += array->growth_rate) * array->width); | |
351 | ||
352 | #if defined (HAVE_BCOPY) | |
d166f048 | 353 | bcopy (&element, (char *) &(array->array[array->sindex]), array->width); |
726f6388 | 354 | array->sindex++; |
d166f048 | 355 | bzero ((char *) &(array->array[array->sindex]), array->width); |
726f6388 JA |
356 | #else |
357 | array->array[array->sindex++] = element; | |
358 | array->array[array->sindex] = (char *)NULL; | |
359 | #endif /* !HAVE_BCOPY */ | |
360 | } | |
361 | ||
362 | /* Free an allocated array and data pointer. */ | |
ccc6cda3 | 363 | void |
726f6388 JA |
364 | array_free (array) |
365 | ARRAY *array; | |
366 | { | |
367 | if (array->array) | |
368 | free (array->array); | |
369 | ||
370 | free (array); | |
371 | } | |
372 | ||
373 | /* **************************************************************** */ | |
374 | /* */ | |
375 | /* Processing a DEF File */ | |
376 | /* */ | |
377 | /* **************************************************************** */ | |
378 | ||
379 | /* The definition of a function. */ | |
380 | typedef int Function (); | |
381 | ||
382 | /* Structure handles processor directives. */ | |
383 | typedef struct { | |
384 | char *directive; | |
385 | Function *function; | |
386 | } HANDLER_ENTRY; | |
387 | ||
388 | extern int | |
389 | builtin_handler (), function_handler (), short_doc_handler (), | |
390 | comment_handler (), depends_on_handler (), produces_handler (), | |
391 | end_handler (), docname_handler (); | |
392 | ||
393 | HANDLER_ENTRY handlers[] = { | |
394 | { "BUILTIN", builtin_handler }, | |
395 | { "DOCNAME", docname_handler }, | |
396 | { "FUNCTION", function_handler }, | |
397 | { "SHORT_DOC", short_doc_handler }, | |
398 | { "$", comment_handler }, | |
399 | { "COMMENT", comment_handler }, | |
400 | { "DEPENDS_ON", depends_on_handler }, | |
401 | { "PRODUCES", produces_handler }, | |
402 | { "END", end_handler }, | |
403 | { (char *)NULL, (Function *)NULL } | |
404 | }; | |
405 | ||
406 | /* Return the entry in the table of handlers for NAME. */ | |
407 | HANDLER_ENTRY * | |
408 | find_directive (directive) | |
409 | char *directive; | |
410 | { | |
411 | register int i; | |
412 | ||
413 | for (i = 0; handlers[i].directive; i++) | |
414 | if (strcmp (handlers[i].directive, directive) == 0) | |
415 | return (&handlers[i]); | |
416 | ||
417 | return ((HANDLER_ENTRY *)NULL); | |
418 | } | |
419 | ||
420 | /* Non-zero indicates that a $BUILTIN has been seen, but not | |
421 | the corresponding $END. */ | |
422 | static int building_builtin = 0; | |
423 | ||
424 | /* Non-zero means to output cpp line and file information before | |
425 | printing the current line to the production file. */ | |
426 | int output_cpp_line_info = 0; | |
427 | ||
428 | /* The main function of this program. Read FILENAME and act on what is | |
429 | found. Lines not starting with a dollar sign are copied to the | |
430 | $PRODUCES target, if one is present. Lines starting with a dollar sign | |
431 | are directives to this program, specifying the name of the builtin, the | |
432 | function to call, the short documentation and the long documentation | |
433 | strings. FILENAME can contain multiple $BUILTINs, but only one $PRODUCES | |
434 | target. After the file has been processed, write out the names of | |
435 | builtins found in each $BUILTIN. Plain text found before the $PRODUCES | |
436 | is ignored, as is "$$ comment text". */ | |
ccc6cda3 | 437 | void |
726f6388 JA |
438 | extract_info (filename, structfile, externfile) |
439 | char *filename; | |
440 | FILE *structfile, *externfile; | |
441 | { | |
442 | register int i; | |
443 | DEF_FILE *defs; | |
444 | struct stat finfo; | |
cce855bc | 445 | size_t file_size; |
726f6388 | 446 | char *buffer, *line; |
cce855bc | 447 | int fd, nr; |
726f6388 JA |
448 | |
449 | if (stat (filename, &finfo) == -1) | |
450 | file_error (filename); | |
451 | ||
452 | fd = open (filename, O_RDONLY, 0666); | |
453 | ||
454 | if (fd == -1) | |
455 | file_error (filename); | |
456 | ||
cce855bc JA |
457 | file_size = (size_t)finfo.st_size; |
458 | buffer = xmalloc (1 + file_size); | |
726f6388 | 459 | |
cce855bc | 460 | if ((nr = read (fd, buffer, file_size)) < 0) |
726f6388 JA |
461 | file_error (filename); |
462 | ||
b72432fd JA |
463 | /* This is needed on WIN32, and does not hurt on Unix. */ |
464 | if (nr < file_size) | |
465 | file_size = nr; | |
466 | ||
726f6388 JA |
467 | close (fd); |
468 | ||
cce855bc JA |
469 | if (nr == 0) |
470 | { | |
471 | fprintf (stderr, "mkbuiltins: %s: skipping zero-length file\n", filename); | |
472 | return; | |
473 | } | |
474 | ||
726f6388 JA |
475 | /* Create and fill in the initial structure describing this file. */ |
476 | defs = (DEF_FILE *)xmalloc (sizeof (DEF_FILE)); | |
477 | defs->filename = filename; | |
478 | defs->lines = array_create (sizeof (char *)); | |
479 | defs->line_number = 0; | |
480 | defs->production = (char *)NULL; | |
481 | defs->output = (FILE *)NULL; | |
482 | defs->builtins = (ARRAY *)NULL; | |
483 | ||
484 | /* Build the array of lines. */ | |
485 | i = 0; | |
cce855bc | 486 | while (i < file_size) |
726f6388 JA |
487 | { |
488 | array_add (&buffer[i], defs->lines); | |
489 | ||
cce855bc | 490 | while (buffer[i] != '\n' && i < file_size) |
726f6388 JA |
491 | i++; |
492 | buffer[i++] = '\0'; | |
493 | } | |
494 | ||
495 | /* Begin processing the input file. We don't write any output | |
496 | until we have a file to write output to. */ | |
497 | output_cpp_line_info = 1; | |
498 | ||
499 | /* Process each line in the array. */ | |
500 | for (i = 0; line = defs->lines->array[i]; i++) | |
501 | { | |
502 | defs->line_number = i; | |
503 | ||
504 | if (*line == '$') | |
505 | { | |
506 | register int j; | |
507 | char *directive; | |
508 | HANDLER_ENTRY *handler; | |
509 | ||
510 | /* Isolate the directive. */ | |
511 | for (j = 0; line[j] && !whitespace (line[j]); j++); | |
512 | ||
513 | directive = xmalloc (j); | |
514 | strncpy (directive, line + 1, j - 1); | |
515 | directive[j -1] = '\0'; | |
516 | ||
517 | /* Get the function handler and call it. */ | |
518 | handler = find_directive (directive); | |
519 | ||
520 | if (!handler) | |
521 | { | |
522 | line_error (defs, "Unknown directive `%s'", directive); | |
523 | free (directive); | |
524 | continue; | |
525 | } | |
526 | else | |
527 | { | |
528 | /* Advance to the first non-whitespace character. */ | |
529 | while (whitespace (line[j])) | |
530 | j++; | |
531 | ||
532 | /* Call the directive handler with the FILE, and ARGS. */ | |
533 | (*(handler->function)) (directive, defs, line + j); | |
534 | } | |
535 | free (directive); | |
536 | } | |
537 | else | |
538 | { | |
539 | if (building_builtin) | |
540 | add_documentation (defs, line); | |
541 | else if (defs->output) | |
542 | { | |
543 | if (output_cpp_line_info) | |
544 | { | |
545 | /* If we're handed an absolute pathname, don't prepend | |
546 | the directory name. */ | |
547 | if (defs->filename[0] == '/') | |
548 | fprintf (defs->output, "#line %d \"%s\"\n", | |
549 | defs->line_number + 1, defs->filename); | |
550 | else | |
551 | fprintf (defs->output, "#line %d \"%s%s\"\n", | |
552 | defs->line_number + 1, | |
553 | error_directory ? error_directory : "./", | |
554 | defs->filename); | |
555 | output_cpp_line_info = 0; | |
556 | } | |
557 | ||
558 | fprintf (defs->output, "%s\n", line); | |
559 | } | |
560 | } | |
561 | } | |
562 | ||
563 | /* Close the production file. */ | |
564 | if (defs->output) | |
565 | fclose (defs->output); | |
566 | ||
567 | /* The file has been processed. Write the accumulated builtins to | |
568 | the builtins.c file, and write the extern definitions to the | |
569 | builtext.h file. */ | |
570 | write_builtins (defs, structfile, externfile); | |
571 | ||
572 | free (buffer); | |
573 | free_defs (defs); | |
574 | } | |
575 | ||
576 | #define free_safely(x) if (x) free (x) | |
577 | ||
578 | static void | |
579 | free_builtin (builtin) | |
580 | BUILTIN_DESC *builtin; | |
581 | { | |
582 | register int i; | |
583 | ||
584 | free_safely (builtin->name); | |
585 | free_safely (builtin->function); | |
586 | free_safely (builtin->shortdoc); | |
587 | free_safely (builtin->docname); | |
588 | ||
589 | if (builtin->longdoc) | |
590 | array_free (builtin->longdoc); | |
591 | ||
592 | if (builtin->dependencies) | |
593 | { | |
594 | for (i = 0; builtin->dependencies->array[i]; i++) | |
595 | free (builtin->dependencies->array[i]); | |
596 | array_free (builtin->dependencies); | |
597 | } | |
598 | } | |
599 | ||
600 | /* Free all of the memory allocated to a DEF_FILE. */ | |
ccc6cda3 | 601 | void |
726f6388 JA |
602 | free_defs (defs) |
603 | DEF_FILE *defs; | |
604 | { | |
605 | register int i; | |
606 | register BUILTIN_DESC *builtin; | |
607 | ||
608 | if (defs->production) | |
609 | free (defs->production); | |
610 | ||
611 | if (defs->lines) | |
612 | array_free (defs->lines); | |
613 | ||
614 | if (defs->builtins) | |
615 | { | |
616 | for (i = 0; builtin = (BUILTIN_DESC *)defs->builtins->array[i]; i++) | |
28ef6c31 | 617 | { |
726f6388 JA |
618 | free_builtin (builtin); |
619 | free (builtin); | |
28ef6c31 | 620 | } |
726f6388 JA |
621 | array_free (defs->builtins); |
622 | } | |
623 | free (defs); | |
624 | } | |
625 | ||
626 | /* **************************************************************** */ | |
627 | /* */ | |
628 | /* The Handler Functions Themselves */ | |
629 | /* */ | |
630 | /* **************************************************************** */ | |
631 | ||
632 | /* Strip surrounding whitespace from STRING, and | |
633 | return a pointer to the start of it. */ | |
634 | char * | |
635 | strip_whitespace (string) | |
636 | char *string; | |
637 | { | |
638 | while (whitespace (*string)) | |
639 | string++; | |
640 | ||
641 | remove_trailing_whitespace (string); | |
642 | return (string); | |
643 | } | |
644 | ||
645 | /* Remove only the trailing whitespace from STRING. */ | |
ccc6cda3 | 646 | void |
726f6388 JA |
647 | remove_trailing_whitespace (string) |
648 | char *string; | |
649 | { | |
650 | register int i; | |
651 | ||
652 | i = strlen (string) - 1; | |
653 | ||
654 | while (i > 0 && whitespace (string[i])) | |
655 | i--; | |
656 | ||
657 | string[++i] = '\0'; | |
658 | } | |
659 | ||
660 | /* Ensure that there is a argument in STRING and return it. | |
661 | FOR_WHOM is the name of the directive which needs the argument. | |
662 | DEFS is the DEF_FILE in which the directive is found. | |
663 | If there is no argument, produce an error. */ | |
664 | char * | |
665 | get_arg (for_whom, defs, string) | |
666 | char *for_whom, *string; | |
667 | DEF_FILE *defs; | |
668 | { | |
669 | char *new; | |
670 | ||
671 | new = strip_whitespace (string); | |
672 | ||
673 | if (!*new) | |
674 | line_error (defs, "%s requires an argument", for_whom); | |
675 | ||
676 | return (savestring (new)); | |
677 | } | |
678 | ||
679 | /* Error if not building a builtin. */ | |
ccc6cda3 | 680 | void |
726f6388 JA |
681 | must_be_building (directive, defs) |
682 | char *directive; | |
683 | DEF_FILE *defs; | |
684 | { | |
685 | if (!building_builtin) | |
686 | line_error (defs, "%s must be inside of a $BUILTIN block", directive); | |
687 | } | |
688 | ||
689 | /* Return the current builtin. */ | |
690 | BUILTIN_DESC * | |
691 | current_builtin (directive, defs) | |
692 | char *directive; | |
693 | DEF_FILE *defs; | |
694 | { | |
695 | must_be_building (directive, defs); | |
cce855bc JA |
696 | if (defs->builtins) |
697 | return ((BUILTIN_DESC *)defs->builtins->array[defs->builtins->sindex - 1]); | |
698 | else | |
699 | return ((BUILTIN_DESC *)NULL); | |
726f6388 JA |
700 | } |
701 | ||
702 | /* Add LINE to the long documentation for the current builtin. | |
703 | Ignore blank lines until the first non-blank line has been seen. */ | |
ccc6cda3 | 704 | void |
726f6388 JA |
705 | add_documentation (defs, line) |
706 | DEF_FILE *defs; | |
707 | char *line; | |
708 | { | |
709 | register BUILTIN_DESC *builtin; | |
710 | ||
711 | builtin = current_builtin ("(implied LONGDOC)", defs); | |
712 | ||
713 | remove_trailing_whitespace (line); | |
714 | ||
715 | if (!*line && !builtin->longdoc) | |
716 | return; | |
717 | ||
718 | if (!builtin->longdoc) | |
719 | builtin->longdoc = array_create (sizeof (char *)); | |
720 | ||
721 | array_add (line, builtin->longdoc); | |
722 | } | |
723 | ||
724 | /* How to handle the $BUILTIN directive. */ | |
725 | int | |
726 | builtin_handler (self, defs, arg) | |
727 | char *self, *arg; | |
728 | DEF_FILE *defs; | |
729 | { | |
ccc6cda3 JA |
730 | BUILTIN_DESC *new; |
731 | char *name; | |
732 | ||
726f6388 JA |
733 | /* If we are already building a builtin, we cannot start a new one. */ |
734 | if (building_builtin) | |
ccc6cda3 JA |
735 | { |
736 | line_error (defs, "%s found before $END", self); | |
737 | return (-1); | |
738 | } | |
726f6388 JA |
739 | |
740 | output_cpp_line_info++; | |
741 | ||
742 | /* Get the name of this builtin, and stick it in the array. */ | |
ccc6cda3 JA |
743 | name = get_arg (self, defs, arg); |
744 | ||
745 | /* If this is the first builtin, create the array to hold them. */ | |
746 | if (!defs->builtins) | |
747 | defs->builtins = array_create (sizeof (BUILTIN_DESC *)); | |
748 | ||
749 | new = (BUILTIN_DESC *)xmalloc (sizeof (BUILTIN_DESC)); | |
750 | new->name = name; | |
751 | new->function = (char *)NULL; | |
752 | new->shortdoc = (char *)NULL; | |
753 | new->docname = (char *)NULL; | |
754 | new->longdoc = (ARRAY *)NULL; | |
755 | new->dependencies = (ARRAY *)NULL; | |
756 | new->flags = 0; | |
757 | ||
758 | if (is_special_builtin (name)) | |
759 | new->flags |= BUILTIN_FLAG_SPECIAL; | |
760 | if (is_assignment_builtin (name)) | |
761 | new->flags |= BUILTIN_FLAG_ASSIGNMENT; | |
762 | ||
763 | array_add ((char *)new, defs->builtins); | |
764 | building_builtin = 1; | |
765 | ||
726f6388 JA |
766 | return (0); |
767 | } | |
768 | ||
769 | /* How to handle the $FUNCTION directive. */ | |
770 | int | |
771 | function_handler (self, defs, arg) | |
772 | char *self, *arg; | |
773 | DEF_FILE *defs; | |
774 | { | |
775 | register BUILTIN_DESC *builtin; | |
776 | ||
777 | builtin = current_builtin (self, defs); | |
778 | ||
cce855bc JA |
779 | if (builtin == 0) |
780 | { | |
781 | line_error (defs, "syntax error: no current builtin for $FUNCTION directive"); | |
782 | exit (1); | |
783 | } | |
726f6388 JA |
784 | if (builtin->function) |
785 | line_error (defs, "%s already has a function (%s)", | |
786 | builtin->name, builtin->function); | |
787 | else | |
788 | builtin->function = get_arg (self, defs, arg); | |
789 | ||
790 | return (0); | |
791 | } | |
792 | ||
793 | /* How to handle the $DOCNAME directive. */ | |
794 | int | |
795 | docname_handler (self, defs, arg) | |
796 | char *self, *arg; | |
797 | DEF_FILE *defs; | |
798 | { | |
799 | register BUILTIN_DESC *builtin; | |
800 | ||
801 | builtin = current_builtin (self, defs); | |
802 | ||
803 | if (builtin->docname) | |
804 | line_error (defs, "%s already had a docname (%s)", | |
805 | builtin->name, builtin->docname); | |
806 | else | |
807 | builtin->docname = get_arg (self, defs, arg); | |
808 | ||
809 | return (0); | |
810 | } | |
811 | ||
812 | /* How to handle the $SHORT_DOC directive. */ | |
ccc6cda3 | 813 | int |
726f6388 JA |
814 | short_doc_handler (self, defs, arg) |
815 | char *self, *arg; | |
816 | DEF_FILE *defs; | |
817 | { | |
818 | register BUILTIN_DESC *builtin; | |
819 | ||
820 | builtin = current_builtin (self, defs); | |
821 | ||
822 | if (builtin->shortdoc) | |
823 | line_error (defs, "%s already has short documentation (%s)", | |
824 | builtin->name, builtin->shortdoc); | |
825 | else | |
826 | builtin->shortdoc = get_arg (self, defs, arg); | |
827 | ||
828 | return (0); | |
829 | } | |
830 | ||
831 | /* How to handle the $COMMENT directive. */ | |
ccc6cda3 | 832 | int |
726f6388 JA |
833 | comment_handler (self, defs) |
834 | char *self; | |
835 | DEF_FILE *defs; | |
836 | { | |
ccc6cda3 | 837 | return (0); |
726f6388 JA |
838 | } |
839 | ||
840 | /* How to handle the $DEPENDS_ON directive. */ | |
ccc6cda3 | 841 | int |
726f6388 JA |
842 | depends_on_handler (self, defs, arg) |
843 | char *self, *arg; | |
844 | DEF_FILE *defs; | |
845 | { | |
846 | register BUILTIN_DESC *builtin; | |
847 | char *dependent; | |
848 | ||
849 | builtin = current_builtin (self, defs); | |
850 | dependent = get_arg (self, defs, arg); | |
851 | ||
852 | if (!builtin->dependencies) | |
853 | builtin->dependencies = array_create (sizeof (char *)); | |
854 | ||
855 | array_add (dependent, builtin->dependencies); | |
856 | ||
857 | return (0); | |
858 | } | |
859 | ||
860 | /* How to handle the $PRODUCES directive. */ | |
ccc6cda3 | 861 | int |
726f6388 JA |
862 | produces_handler (self, defs, arg) |
863 | char *self, *arg; | |
864 | DEF_FILE *defs; | |
865 | { | |
866 | /* If just hacking documentation, don't change any of the production | |
867 | files. */ | |
868 | if (only_documentation) | |
869 | return (0); | |
870 | ||
871 | output_cpp_line_info++; | |
872 | ||
873 | if (defs->production) | |
874 | line_error (defs, "%s already has a %s definition", defs->filename, self); | |
875 | else | |
876 | { | |
877 | defs->production = get_arg (self, defs, arg); | |
878 | ||
879 | if (inhibit_production) | |
880 | return (0); | |
881 | ||
882 | defs->output = fopen (defs->production, "w"); | |
883 | ||
884 | if (!defs->output) | |
885 | file_error (defs->production); | |
886 | ||
887 | fprintf (defs->output, "/* %s, created from %s. */\n", | |
888 | defs->production, defs->filename); | |
889 | } | |
890 | return (0); | |
891 | } | |
892 | ||
893 | /* How to handle the $END directive. */ | |
ccc6cda3 | 894 | int |
726f6388 JA |
895 | end_handler (self, defs, arg) |
896 | char *self, *arg; | |
897 | DEF_FILE *defs; | |
898 | { | |
899 | must_be_building (self, defs); | |
900 | building_builtin = 0; | |
ccc6cda3 | 901 | return (0); |
726f6388 JA |
902 | } |
903 | ||
904 | /* **************************************************************** */ | |
905 | /* */ | |
906 | /* Error Handling Functions */ | |
907 | /* */ | |
908 | /* **************************************************************** */ | |
909 | ||
910 | /* Produce an error for DEFS with FORMAT and ARGS. */ | |
ccc6cda3 | 911 | void |
726f6388 JA |
912 | line_error (defs, format, arg1, arg2) |
913 | DEF_FILE *defs; | |
914 | char *format, *arg1, *arg2; | |
915 | { | |
916 | if (defs->filename[0] != '/') | |
917 | fprintf (stderr, "%s", error_directory ? error_directory : "./"); | |
918 | fprintf (stderr, "%s:%d:", defs->filename, defs->line_number + 1); | |
919 | fprintf (stderr, format, arg1, arg2); | |
920 | fprintf (stderr, "\n"); | |
921 | fflush (stderr); | |
922 | } | |
923 | ||
924 | /* Print error message for FILENAME. */ | |
ccc6cda3 | 925 | void |
726f6388 JA |
926 | file_error (filename) |
927 | char *filename; | |
928 | { | |
929 | perror (filename); | |
930 | exit (2); | |
931 | } | |
932 | ||
933 | /* **************************************************************** */ | |
934 | /* */ | |
935 | /* xmalloc and xrealloc () */ | |
936 | /* */ | |
937 | /* **************************************************************** */ | |
938 | ||
939 | static void memory_error_and_abort (); | |
940 | ||
941 | static char * | |
942 | xmalloc (bytes) | |
943 | int bytes; | |
944 | { | |
945 | char *temp = (char *)malloc (bytes); | |
946 | ||
947 | if (!temp) | |
948 | memory_error_and_abort (); | |
949 | return (temp); | |
950 | } | |
951 | ||
952 | static char * | |
953 | xrealloc (pointer, bytes) | |
954 | char *pointer; | |
955 | int bytes; | |
956 | { | |
957 | char *temp; | |
958 | ||
959 | if (!pointer) | |
960 | temp = (char *)malloc (bytes); | |
961 | else | |
962 | temp = (char *)realloc (pointer, bytes); | |
963 | ||
964 | if (!temp) | |
965 | memory_error_and_abort (); | |
966 | ||
967 | return (temp); | |
968 | } | |
969 | ||
970 | static void | |
971 | memory_error_and_abort () | |
972 | { | |
ccc6cda3 | 973 | fprintf (stderr, "mkbuiltins: out of virtual memory\n"); |
726f6388 JA |
974 | abort (); |
975 | } | |
976 | ||
977 | /* **************************************************************** */ | |
978 | /* */ | |
979 | /* Creating the Struct and Extern Files */ | |
980 | /* */ | |
981 | /* **************************************************************** */ | |
982 | ||
983 | /* Return a pointer to a newly allocated builtin which is | |
984 | an exact copy of BUILTIN. */ | |
985 | BUILTIN_DESC * | |
986 | copy_builtin (builtin) | |
987 | BUILTIN_DESC *builtin; | |
988 | { | |
989 | BUILTIN_DESC *new; | |
990 | ||
991 | new = (BUILTIN_DESC *)xmalloc (sizeof (BUILTIN_DESC)); | |
992 | ||
28ef6c31 JA |
993 | new->name = savestring (builtin->name); |
994 | new->shortdoc = savestring (builtin->shortdoc); | |
995 | new->longdoc = copy_string_array (builtin->longdoc); | |
726f6388 JA |
996 | new->dependencies = copy_string_array (builtin->dependencies); |
997 | ||
998 | new->function = | |
999 | builtin->function ? savestring (builtin->function) : (char *)NULL; | |
1000 | new->docname = | |
1001 | builtin->docname ? savestring (builtin->docname) : (char *)NULL; | |
1002 | ||
1003 | return (new); | |
1004 | } | |
1005 | ||
1006 | /* How to save away a builtin. */ | |
ccc6cda3 | 1007 | void |
726f6388 JA |
1008 | save_builtin (builtin) |
1009 | BUILTIN_DESC *builtin; | |
1010 | { | |
1011 | BUILTIN_DESC *newbuiltin; | |
1012 | ||
1013 | newbuiltin = copy_builtin (builtin); | |
1014 | ||
1015 | /* If this is the first builtin to be saved, create the array | |
1016 | to hold it. */ | |
1017 | if (!saved_builtins) | |
1018 | saved_builtins = array_create (sizeof (BUILTIN_DESC *)); | |
1019 | ||
1020 | array_add ((char *)newbuiltin, saved_builtins); | |
1021 | } | |
1022 | ||
1023 | /* Flags that mean something to write_documentation (). */ | |
1024 | #define STRING_ARRAY 1 | |
1025 | #define TEXINFO 2 | |
1026 | ||
1027 | char *structfile_header[] = { | |
1028 | "/* builtins.c -- the built in shell commands. */", | |
1029 | "", | |
1030 | "/* This file is manufactured by ./mkbuiltins, and should not be", | |
1031 | " edited by hand. See the source to mkbuiltins for details. */", | |
1032 | "", | |
1033 | "/* Copyright (C) 1987, 1991, 1992 Free Software Foundation, Inc.", | |
1034 | "", | |
1035 | " This file is part of GNU Bash, the Bourne Again SHell.", | |
1036 | "", | |
1037 | " Bash is free software; you can redistribute it and/or modify it", | |
1038 | " under the terms of the GNU General Public License as published by", | |
bb70624e | 1039 | " the Free Software Foundation; either version 2, or (at your option)", |
726f6388 JA |
1040 | " any later version.", |
1041 | "", | |
1042 | " Bash is distributed in the hope that it will be useful, but WITHOUT", | |
1043 | " ANY WARRANTY; without even the implied warranty of MERCHANTABILITY", | |
1044 | " or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public", | |
1045 | " License for more details.", | |
1046 | "", | |
1047 | " You should have received a copy of the GNU General Public License", | |
1048 | " along with Bash; see the file COPYING. If not, write to the Free", | |
bb70624e | 1049 | " Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */", |
726f6388 | 1050 | "", |
ccc6cda3 | 1051 | "/* The list of shell builtins. Each element is name, function, flags,", |
726f6388 JA |
1052 | " long-doc, short-doc. The long-doc field contains a pointer to an array", |
1053 | " of help lines. The function takes a WORD_LIST *; the first word in the", | |
1054 | " list is the first arg to the command. The list has already had word", | |
1055 | " expansion performed.", | |
1056 | "", | |
1057 | " Functions which need to look at only the simple commands (e.g.", | |
1058 | " the enable_builtin ()), should ignore entries where", | |
1059 | " (array[i].function == (Function *)NULL). Such entries are for", | |
1060 | " the list of shell reserved control structures, like `if' and `while'.", | |
1061 | " The end of the list is denoted with a NULL name field. */", | |
1062 | "", | |
1063 | "#include \"../builtins.h\"", | |
1064 | (char *)NULL | |
1065 | }; | |
1066 | ||
1067 | char *structfile_footer[] = { | |
1068 | " { (char *)0x0, (Function *)0x0, 0, (char **)0x0, (char *)0x0 }", | |
1069 | "};", | |
1070 | "", | |
ccc6cda3 JA |
1071 | "struct builtin *shell_builtins = static_shell_builtins;", |
1072 | "struct builtin *current_builtin;", | |
1073 | "", | |
726f6388 | 1074 | "int num_shell_builtins =", |
ccc6cda3 | 1075 | "\tsizeof (static_shell_builtins) / sizeof (struct builtin) - 1;", |
726f6388 JA |
1076 | (char *)NULL |
1077 | }; | |
1078 | ||
1079 | /* Write out any neccessary opening information for | |
1080 | STRUCTFILE and EXTERNFILE. */ | |
ccc6cda3 | 1081 | void |
726f6388 JA |
1082 | write_file_headers (structfile, externfile) |
1083 | FILE *structfile, *externfile; | |
1084 | { | |
1085 | register int i; | |
1086 | ||
1087 | if (structfile) | |
1088 | { | |
1089 | for (i = 0; structfile_header[i]; i++) | |
1090 | fprintf (structfile, "%s\n", structfile_header[i]); | |
1091 | ||
1092 | fprintf (structfile, "#include \"%s\"\n", | |
1093 | extern_filename ? extern_filename : "builtext.h"); | |
ccc6cda3 | 1094 | fprintf (structfile, "\nstruct builtin static_shell_builtins[] = {\n"); |
726f6388 JA |
1095 | } |
1096 | ||
1097 | if (externfile) | |
1098 | fprintf (externfile, | |
1099 | "/* %s - The list of builtins found in libbuiltins.a. */\n", | |
1100 | extern_filename ? extern_filename : "builtext.h"); | |
1101 | } | |
1102 | ||
1103 | /* Write out any necessary closing information for | |
1104 | STRUCTFILE and EXTERNFILE. */ | |
ccc6cda3 | 1105 | void |
726f6388 JA |
1106 | write_file_footers (structfile, externfile) |
1107 | FILE *structfile, *externfile; | |
1108 | { | |
1109 | register int i; | |
1110 | ||
1111 | /* Write out the footers. */ | |
1112 | if (structfile) | |
1113 | { | |
1114 | for (i = 0; structfile_footer[i]; i++) | |
1115 | fprintf (structfile, "%s\n", structfile_footer[i]); | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | /* Write out the information accumulated in DEFS to | |
1120 | STRUCTFILE and EXTERNFILE. */ | |
ccc6cda3 | 1121 | void |
726f6388 JA |
1122 | write_builtins (defs, structfile, externfile) |
1123 | DEF_FILE *defs; | |
1124 | FILE *structfile, *externfile; | |
1125 | { | |
1126 | register int i; | |
1127 | ||
1128 | /* Write out the information. */ | |
1129 | if (defs->builtins) | |
1130 | { | |
1131 | register BUILTIN_DESC *builtin; | |
1132 | ||
1133 | for (i = 0; i < defs->builtins->sindex; i++) | |
1134 | { | |
1135 | builtin = (BUILTIN_DESC *)defs->builtins->array[i]; | |
1136 | ||
1137 | /* Write out any #ifdefs that may be there. */ | |
1138 | if (!only_documentation) | |
1139 | { | |
1140 | if (builtin->dependencies) | |
1141 | { | |
ccc6cda3 | 1142 | write_ifdefs (externfile, builtin->dependencies->array); |
726f6388 JA |
1143 | write_ifdefs (structfile, builtin->dependencies->array); |
1144 | } | |
1145 | ||
1146 | /* Write the extern definition. */ | |
1147 | if (externfile) | |
1148 | { | |
1149 | if (builtin->function) | |
1150 | fprintf (externfile, "extern int %s ();\n", | |
1151 | builtin->function); | |
1152 | ||
1153 | fprintf (externfile, "extern char *%s_doc[];\n", | |
28ef6c31 | 1154 | builtin->docname ? builtin->docname : builtin->name); |
726f6388 JA |
1155 | } |
1156 | ||
1157 | /* Write the structure definition. */ | |
1158 | if (structfile) | |
1159 | { | |
1160 | fprintf (structfile, " { \"%s\", ", builtin->name); | |
1161 | ||
1162 | if (builtin->function) | |
1163 | fprintf (structfile, "%s, ", builtin->function); | |
1164 | else | |
1165 | fprintf (structfile, "(Function *)0x0, "); | |
1166 | ||
ccc6cda3 JA |
1167 | fprintf (structfile, "%s%s%s, %s_doc,\n", |
1168 | "BUILTIN_ENABLED | STATIC_BUILTIN", | |
1169 | (builtin->flags & BUILTIN_FLAG_SPECIAL) ? " | SPECIAL_BUILTIN" : "", | |
1170 | (builtin->flags & BUILTIN_FLAG_ASSIGNMENT) ? " | ASSIGNMENT_BUILTIN" : "", | |
726f6388 JA |
1171 | builtin->docname ? builtin->docname : builtin->name); |
1172 | ||
726f6388 | 1173 | fprintf |
ccc6cda3 | 1174 | (structfile, " \"%s\", (char *)NULL },\n", |
726f6388 JA |
1175 | builtin->shortdoc ? builtin->shortdoc : builtin->name); |
1176 | ||
1177 | /* Save away this builtin for later writing of the | |
1178 | long documentation strings. */ | |
1179 | save_builtin (builtin); | |
1180 | } | |
1181 | ||
1182 | /* Write out the matching #endif, if neccessary. */ | |
1183 | if (builtin->dependencies) | |
1184 | { | |
1185 | if (externfile) | |
1186 | write_endifs (externfile, builtin->dependencies->array); | |
1187 | ||
1188 | if (structfile) | |
1189 | write_endifs (structfile, builtin->dependencies->array); | |
1190 | } | |
1191 | } | |
1192 | ||
1193 | if (documentation_file) | |
1194 | { | |
1195 | fprintf (documentation_file, "@item %s\n", builtin->name); | |
1196 | write_documentation | |
1197 | (documentation_file, builtin->longdoc->array, 0, TEXINFO); | |
1198 | } | |
1199 | } | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | /* Write out the long documentation strings in BUILTINS to STREAM. */ | |
ccc6cda3 | 1204 | void |
726f6388 JA |
1205 | write_longdocs (stream, builtins) |
1206 | FILE *stream; | |
1207 | ARRAY *builtins; | |
1208 | { | |
1209 | register int i; | |
1210 | register BUILTIN_DESC *builtin; | |
1211 | ||
1212 | for (i = 0; i < builtins->sindex; i++) | |
1213 | { | |
1214 | builtin = (BUILTIN_DESC *)builtins->array[i]; | |
1215 | ||
1216 | if (builtin->dependencies) | |
1217 | write_ifdefs (stream, builtin->dependencies->array); | |
1218 | ||
1219 | /* Write the long documentation strings. */ | |
1220 | fprintf (stream, "char *%s_doc[] =", | |
1221 | builtin->docname ? builtin->docname : builtin->name); | |
1222 | write_documentation (stream, builtin->longdoc->array, 0, STRING_ARRAY); | |
1223 | ||
1224 | if (builtin->dependencies) | |
1225 | write_endifs (stream, builtin->dependencies->array); | |
1226 | ||
1227 | } | |
1228 | } | |
1229 | ||
1230 | /* Write an #ifdef string saying what needs to be defined (or not defined) | |
1231 | in order to allow compilation of the code that will follow. | |
1232 | STREAM is the stream to write the information to, | |
1233 | DEFINES is a null terminated array of define names. | |
1234 | If a define is preceded by an `!', then the sense of the test is | |
1235 | reversed. */ | |
ccc6cda3 | 1236 | void |
726f6388 JA |
1237 | write_ifdefs (stream, defines) |
1238 | FILE *stream; | |
1239 | char **defines; | |
1240 | { | |
1241 | register int i; | |
1242 | ||
1243 | if (!stream) | |
1244 | return; | |
1245 | ||
1246 | fprintf (stream, "#if "); | |
1247 | ||
1248 | for (i = 0; defines[i]; i++) | |
1249 | { | |
1250 | char *def = defines[i]; | |
1251 | ||
1252 | if (*def == '!') | |
1253 | fprintf (stream, "!defined (%s)", def + 1); | |
1254 | else | |
1255 | fprintf (stream, "defined (%s)", def); | |
1256 | ||
1257 | if (defines[i + 1]) | |
1258 | fprintf (stream, " && "); | |
1259 | } | |
1260 | fprintf (stream, "\n"); | |
1261 | } | |
1262 | ||
1263 | /* Write an #endif string saying what defines controlled the compilation | |
1264 | of the immediately preceding code. | |
1265 | STREAM is the stream to write the information to. | |
1266 | DEFINES is a null terminated array of define names. */ | |
ccc6cda3 | 1267 | void |
726f6388 JA |
1268 | write_endifs (stream, defines) |
1269 | FILE *stream; | |
1270 | char **defines; | |
1271 | { | |
1272 | register int i; | |
1273 | ||
1274 | if (!stream) | |
1275 | return; | |
1276 | ||
1277 | fprintf (stream, "#endif /* "); | |
1278 | ||
1279 | for (i = 0; defines[i]; i++) | |
1280 | { | |
1281 | fprintf (stream, "%s", defines[i]); | |
1282 | ||
1283 | if (defines[i + 1]) | |
1284 | fprintf (stream, " && "); | |
1285 | } | |
1286 | ||
1287 | fprintf (stream, " */\n"); | |
1288 | } | |
1289 | ||
1290 | /* Write DOCUMENTAION to STREAM, perhaps surrounding it with double-quotes | |
1291 | and quoting special characters in the string. */ | |
ccc6cda3 | 1292 | void |
726f6388 JA |
1293 | write_documentation (stream, documentation, indentation, flags) |
1294 | FILE *stream; | |
1295 | char **documentation; | |
1296 | int indentation, flags; | |
1297 | { | |
1298 | register int i, j; | |
1299 | register char *line; | |
ccc6cda3 | 1300 | int string_array, texinfo; |
726f6388 JA |
1301 | |
1302 | if (!stream) | |
1303 | return; | |
1304 | ||
ccc6cda3 | 1305 | string_array = flags & STRING_ARRAY; |
726f6388 | 1306 | if (string_array) |
ccc6cda3 | 1307 | fprintf (stream, " {\n#if defined (HELP_BUILTIN)\n"); |
726f6388 JA |
1308 | |
1309 | #if !defined (OLDCODE) | |
1310 | /* XXX -- clean me up; for experiment only */ | |
1311 | if (no_long_document) | |
1312 | goto end_of_document; | |
1313 | #endif /* !OLDCODE */ | |
1314 | ||
ccc6cda3 | 1315 | for (i = 0, texinfo = (flags & TEXINFO); line = documentation[i]; i++) |
726f6388 JA |
1316 | { |
1317 | /* Allow #ifdef's to be written out verbatim. */ | |
1318 | if (*line == '#') | |
1319 | { | |
1320 | if (string_array) | |
1321 | fprintf (stream, "%s\n", line); | |
1322 | continue; | |
1323 | } | |
1324 | ||
1325 | if (string_array) | |
1326 | fprintf (stream, " \""); | |
1327 | ||
1328 | if (indentation) | |
1329 | for (j = 0; j < indentation; j++) | |
1330 | fprintf (stream, " "); | |
1331 | ||
1332 | if (string_array) | |
1333 | { | |
1334 | for (j = 0; line[j]; j++) | |
1335 | { | |
1336 | switch (line[j]) | |
1337 | { | |
1338 | case '\\': | |
1339 | case '"': | |
1340 | fprintf (stream, "\\%c", line[j]); | |
1341 | break; | |
1342 | ||
1343 | default: | |
1344 | fprintf (stream, "%c", line[j]); | |
1345 | } | |
1346 | } | |
1347 | ||
1348 | fprintf (stream, "\",\n"); | |
1349 | } | |
1350 | else if (texinfo) | |
1351 | { | |
1352 | for (j = 0; line[j]; j++) | |
1353 | { | |
1354 | switch (line[j]) | |
1355 | { | |
1356 | case '@': | |
1357 | case '{': | |
1358 | case '}': | |
1359 | fprintf (stream, "@%c", line[j]); | |
1360 | break; | |
1361 | ||
1362 | default: | |
1363 | fprintf (stream, "%c", line[j]); | |
1364 | } | |
1365 | } | |
1366 | fprintf (stream, "\n"); | |
1367 | } | |
1368 | else | |
1369 | fprintf (stream, "%s\n", line); | |
1370 | } | |
1371 | ||
1372 | #if !defined (OLDCODE) | |
1373 | end_of_document: | |
1374 | #endif /* !OLDCODE */ | |
1375 | ||
1376 | if (string_array) | |
ccc6cda3 | 1377 | fprintf (stream, "#endif /* HELP_BUILTIN */\n (char *)NULL\n};\n"); |
726f6388 JA |
1378 | } |
1379 | ||
1380 | static int | |
ccc6cda3 JA |
1381 | _find_in_table (name, name_table) |
1382 | char *name, *name_table[]; | |
726f6388 JA |
1383 | { |
1384 | register int i; | |
1385 | ||
ccc6cda3 JA |
1386 | for (i = 0; name_table[i]; i++) |
1387 | if (strcmp (name, name_table[i]) == 0) | |
726f6388 JA |
1388 | return 1; |
1389 | return 0; | |
1390 | } | |
ccc6cda3 JA |
1391 | |
1392 | static int | |
1393 | is_special_builtin (name) | |
1394 | char *name; | |
1395 | { | |
1396 | return (_find_in_table (name, special_builtins)); | |
1397 | } | |
1398 | ||
1399 | static int | |
1400 | is_assignment_builtin (name) | |
1401 | char *name; | |
1402 | { | |
1403 | return (_find_in_table (name, assignment_builtins)); | |
1404 | } | |
b72432fd JA |
1405 | |
1406 | #if !defined (HAVE_RENAME) | |
1407 | static int | |
1408 | rename (from, to) | |
1409 | char *from, *to; | |
1410 | { | |
1411 | unlink (to); | |
1412 | if (link (from, to) < 0) | |
1413 | return (-1); | |
1414 | unlink (from); | |
1415 | return (0); | |
1416 | } | |
1417 | #endif /* !HAVE_RENAME */ |