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1 | /* $XConsortium: imake.c,v 1.65 91/07/25 17:50:17 rws Exp $ */ |
2 | ||
3 | /*****************************************************************************\ | |
4 | * * | |
5 | * Porting Note * | |
6 | * * | |
7 | * Add the value of BOOTSTRAPCFLAGS to the cpp_argv table so that it will be * | |
8 | * passed to the template file. * | |
9 | * * | |
10 | \*****************************************************************************/ | |
11 | ||
12 | /* | |
13 | * | |
14 | * Copyright 1985, 1986, 1987 by the Massachusetts Institute of Technology | |
15 | * | |
16 | * Permission to use, copy, modify, and distribute this | |
17 | * software and its documentation for any purpose and without | |
18 | * fee is hereby granted, provided that the above copyright | |
19 | * notice appear in all copies and that both that copyright | |
20 | * notice and this permission notice appear in supporting | |
21 | * documentation, and that the name of M.I.T. not be used in | |
22 | * advertising or publicity pertaining to distribution of the | |
23 | * software without specific, written prior permission. | |
24 | * M.I.T. makes no representations about the suitability of | |
25 | * this software for any purpose. It is provided "as is" | |
26 | * without express or implied warranty. | |
27 | * | |
28 | * Original Author: | |
29 | * Todd Brunhoff | |
30 | * Tektronix, inc. | |
31 | * While a guest engineer at Project Athena, MIT | |
32 | * | |
33 | * imake: the include-make program. | |
34 | * | |
35 | * Usage: imake [-Idir] [-Ddefine] [-T] [-f imakefile ] [-s] [-e] [-v] [make flags] | |
36 | * | |
37 | * Imake takes a template makefile (Imake.tmpl) and runs cpp on it | |
38 | * producing a temporary makefile in /tmp. It then runs make on | |
39 | * this pre-processed makefile. | |
40 | * Options: | |
41 | * -D define. Same as cpp -D argument. | |
42 | * -I Include directory. Same as cpp -I argument. | |
43 | * -T template. Designate a template other | |
44 | * than Imake.tmpl | |
45 | * -s[F] show. Show the produced makefile on the standard | |
46 | * output. Make is not run is this case. If a file | |
47 | * argument is provided, the output is placed there. | |
48 | * -e[F] execute instead of show; optionally name Makefile F | |
49 | * -v verbose. Show the make command line executed. | |
50 | * | |
51 | * Environment variables: | |
52 | * | |
53 | * IMAKEINCLUDE Include directory to use in addition to "." | |
54 | * IMAKECPP Cpp to use instead of /lib/cpp | |
55 | * IMAKEMAKE make program to use other than what is | |
56 | * found by searching the $PATH variable. | |
57 | * Other features: | |
58 | * imake reads the entire cpp output into memory and then scans it | |
59 | * for occurences of "@@". If it encounters them, it replaces it with | |
60 | * a newline. It also trims any trailing white space on output lines | |
61 | * (because make gets upset at them). This helps when cpp expands | |
62 | * multi-line macros but you want them to appear on multiple lines. | |
63 | * | |
64 | * The macros MAKEFILE and MAKE are provided as macros | |
65 | * to make. MAKEFILE is set to imake's makefile (not the constructed, | |
66 | * preprocessed one) and MAKE is set to argv[0], i.e. the name of | |
67 | * the imake program. | |
68 | * | |
69 | * Theory of operation: | |
70 | * 1. Determine the name of the imakefile from the command line (-f) | |
71 | * or from the content of the current directory (Imakefile or imakefile). | |
72 | * Call this <imakefile>. This gets added to the arguments for | |
73 | * make as MAKEFILE=<imakefile>. | |
74 | * 2. Determine the name of the template from the command line (-T) | |
75 | * or the default, Imake.tmpl. Call this <template> | |
76 | * 3. Start up cpp an provide it with three lines of input: | |
77 | * #define IMAKE_TEMPLATE " <template> " | |
78 | * #define INCLUDE_IMAKEFILE < <imakefile> > | |
79 | * #include IMAKE_TEMPLATE | |
80 | * Note that the define for INCLUDE_IMAKEFILE is intended for | |
81 | * use in the template file. This implies that the imake is | |
82 | * useless unless the template file contains at least the line | |
83 | * #include INCLUDE_IMAKEFILE | |
84 | * 4. Gather the output from cpp, and clean it up, expanding @@ to | |
85 | * newlines, stripping trailing white space, cpp control lines, | |
86 | * and extra blank lines. This cleaned output is placed in a | |
87 | * temporary file. Call this <makefile>. | |
88 | * 5. Start up make specifying <makefile> as its input. | |
89 | * | |
90 | * The design of the template makefile should therefore be: | |
91 | * <set global macros like CFLAGS, etc.> | |
92 | * <include machine dependent additions> | |
93 | * #include INCLUDE_IMAKEFILE | |
94 | * <add any global targets like 'clean' and long dependencies> | |
95 | */ | |
96 | #include <stdio.h> | |
97 | #if (defined(SVR4) || defined(_IBMR2) || defined(SYSV386)) && __STDC__ | |
98 | FILE * fdopen(); | |
99 | #endif | |
100 | #include <ctype.h> | |
101 | #include "Xosdefs.h" | |
102 | #ifndef X_NOT_POSIX | |
103 | #define _POSIX_SOURCE | |
104 | #endif | |
105 | #include <sys/types.h> | |
106 | #include <fcntl.h> | |
107 | #ifdef X_NOT_POSIX | |
108 | #include <sys/file.h> | |
109 | #else | |
110 | #ifdef hp9000 | |
111 | #undef _POSIX_SOURCE | |
112 | #endif | |
113 | #include <unistd.h> | |
114 | #ifdef hp9000 | |
115 | #define _POSIX_SOURCE | |
116 | #endif | |
117 | #endif | |
118 | #if defined(X_NOT_POSIX) || defined(_POSIX_SOURCE) | |
119 | #include <signal.h> | |
120 | #else | |
121 | #define _POSIX_SOURCE | |
122 | #include <signal.h> | |
123 | #undef _POSIX_SOURCE | |
124 | #endif | |
125 | #include <sys/stat.h> | |
126 | #ifndef X_NOT_POSIX | |
127 | #ifdef _POSIX_SOURCE | |
128 | #include <sys/wait.h> | |
129 | #else | |
130 | #define _POSIX_SOURCE | |
131 | #include <sys/wait.h> | |
132 | #undef _POSIX_SOURCE | |
133 | #endif | |
134 | #define waitCode(w) WEXITSTATUS(w) | |
135 | #define waitSig(w) WTERMSIG(w) | |
136 | typedef int waitType; | |
137 | #else /* X_NOT_POSIX */ | |
138 | #ifdef SYSV | |
139 | #define waitCode(w) (((w) >> 8) & 0x7f) | |
140 | #define waitSig(w) ((w) & 0xff) | |
141 | typedef int waitType; | |
142 | #else /* SYSV */ | |
143 | #include <sys/wait.h> | |
144 | #define waitCode(w) ((w).w_T.w_Retcode) | |
145 | #define waitSig(w) ((w).w_T.w_Termsig) | |
146 | typedef union wait waitType; | |
147 | #endif | |
148 | #ifndef WIFSIGNALED | |
149 | #define WIFSIGNALED(w) waitSig(w) | |
150 | #endif | |
151 | #ifndef WIFEXITED | |
152 | #define WIFEXITED(w) waitCode(w) | |
153 | #endif | |
154 | #endif /* X_NOT_POSIX */ | |
155 | #ifndef X_NOT_STDC_ENV | |
156 | #include <stdlib.h> | |
157 | #else | |
158 | char *malloc(), *realloc(); | |
159 | void exit(); | |
160 | #endif | |
161 | #if defined(macII) && !defined(__STDC__) /* stdlib.h fails to define these */ | |
162 | char *malloc(), *realloc(); | |
163 | #endif /* macII */ | |
164 | #ifdef X_NOT_STDC_ENV | |
165 | extern char *getenv(); | |
166 | #endif | |
167 | #include <errno.h> | |
168 | extern int errno; | |
169 | #include "imakemdep.h" | |
170 | ||
171 | ||
172 | #define TRUE 1 | |
173 | #define FALSE 0 | |
174 | ||
175 | #ifdef FIXUP_CPP_WHITESPACE | |
176 | int InRule = FALSE; | |
177 | #endif | |
178 | ||
179 | /* | |
180 | * Some versions of cpp reduce all tabs in macro expansion to a single | |
181 | * space. In addition, the escaped newline may be replaced with a | |
182 | * space instead of being deleted. Blech. | |
183 | */ | |
184 | #ifndef FIXUP_CPP_WHITESPACE | |
185 | #define KludgeOutputLine(arg) | |
186 | #define KludgeResetRule() | |
187 | #endif | |
188 | ||
189 | typedef unsigned char boolean; | |
190 | ||
191 | #ifndef DEFAULT_CPP | |
192 | #ifdef USE_CC_E | |
193 | #define DEFAULT_CPP "/bin/cc" | |
194 | #else | |
195 | #ifdef CPP_PROGRAM | |
196 | #define DEFAULT_CPP CPP_PROGRAM | |
197 | #else | |
198 | #define DEFAULT_CPP "/lib/cpp" | |
199 | #endif | |
200 | #endif | |
201 | #endif | |
202 | ||
203 | char *cpp = DEFAULT_CPP; | |
204 | ||
205 | char *tmpMakefile = "/tmp/Imf.XXXXXX"; | |
206 | char *tmpImakefile = "/tmp/IIf.XXXXXX"; | |
207 | char *make_argv[ ARGUMENTS ] = { "make" }; | |
208 | ||
209 | int make_argindex; | |
210 | int cpp_argindex; | |
211 | char *make = NULL; | |
212 | char *Imakefile = NULL; | |
213 | char *Makefile = "Makefile"; | |
214 | char *Template = "Imake.tmpl"; | |
215 | char *program; | |
216 | char *FindImakefile(); | |
217 | char *ReadLine(); | |
218 | char *CleanCppInput(); | |
219 | char *Strdup(); | |
220 | #if defined(__STDC__) || defined(__GNUC__) | |
221 | char *Emalloc(int); | |
222 | #else | |
223 | char *Emalloc(); | |
224 | #endif | |
225 | ||
226 | boolean verbose = FALSE; | |
227 | boolean show = TRUE; | |
228 | ||
229 | main(argc, argv) | |
230 | int argc; | |
231 | char **argv; | |
232 | { | |
233 | FILE *tmpfd; | |
234 | char makeMacro[ BUFSIZ ]; | |
235 | char makefileMacro[ BUFSIZ ]; | |
236 | ||
237 | program = argv[0]; | |
238 | init(); | |
239 | SetOpts(argc, argv); | |
240 | #ifdef USE_CC_E | |
241 | AddCppArg("-"); | |
242 | #endif | |
243 | ||
244 | Imakefile = FindImakefile(Imakefile); | |
245 | if (Makefile) | |
246 | tmpMakefile = Makefile; | |
247 | else { | |
248 | tmpMakefile = Strdup(tmpMakefile); | |
249 | (void) mktemp(tmpMakefile); | |
250 | } | |
251 | AddMakeArg("-f"); | |
252 | AddMakeArg( tmpMakefile ); | |
253 | sprintf(makeMacro, "MAKE=%s", program); | |
254 | AddMakeArg( makeMacro ); | |
255 | sprintf(makefileMacro, "MAKEFILE=%s", Imakefile); | |
256 | AddMakeArg( makefileMacro ); | |
257 | ||
258 | if ((tmpfd = fopen(tmpMakefile, "w+")) == NULL) | |
259 | LogFatal("Cannot create temporary file %s.", tmpMakefile); | |
260 | ||
261 | cppit(Imakefile, Template, tmpfd, tmpMakefile); | |
262 | ||
263 | if (show) { | |
264 | if (Makefile == NULL) | |
265 | showit(tmpfd); | |
266 | } else | |
267 | makeit(); | |
268 | wrapup(); | |
269 | exit(0); | |
270 | } | |
271 | ||
272 | showit(fd) | |
273 | FILE *fd; | |
274 | { | |
275 | char buf[ BUFSIZ ]; | |
276 | int red; | |
277 | ||
278 | fseek(fd, 0, 0); | |
279 | while ((red = fread(buf, 1, BUFSIZ, fd)) > 0) | |
280 | fwrite(buf, red, 1, stdout); | |
281 | if (red < 0) | |
282 | LogFatal("Cannot write stdout.", ""); | |
283 | } | |
284 | ||
285 | wrapup() | |
286 | { | |
287 | if (tmpMakefile != Makefile) | |
288 | unlink(tmpMakefile); | |
289 | unlink(tmpImakefile); | |
290 | } | |
291 | ||
292 | #ifdef SIGNALRETURNSINT | |
293 | int | |
294 | #else | |
295 | void | |
296 | #endif | |
297 | catch(sig) | |
298 | int sig; | |
299 | { | |
300 | errno = 0; | |
301 | LogFatalI("Signal %d.", sig); | |
302 | } | |
303 | ||
304 | /* | |
305 | * Initialize some variables. | |
306 | */ | |
307 | init() | |
308 | { | |
309 | char *p; | |
310 | ||
311 | make_argindex=0; | |
312 | while (make_argv[ make_argindex ] != NULL) | |
313 | make_argindex++; | |
314 | cpp_argindex = 0; | |
315 | while (cpp_argv[ cpp_argindex ] != NULL) | |
316 | cpp_argindex++; | |
317 | ||
318 | /* | |
319 | * See if the standard include directory is different than | |
320 | * the default. Or if cpp is not the default. Or if the make | |
321 | * found by the PATH variable is not the default. | |
322 | */ | |
323 | if (p = getenv("IMAKEINCLUDE")) { | |
324 | if (*p != '-' || *(p+1) != 'I') | |
325 | LogFatal("Environment var IMAKEINCLUDE %s\n", | |
326 | "must begin with -I"); | |
327 | AddCppArg(p); | |
328 | for (; *p; p++) | |
329 | if (*p == ' ') { | |
330 | *p++ = '\0'; | |
331 | AddCppArg(p); | |
332 | } | |
333 | } | |
334 | if (p = getenv("IMAKECPP")) | |
335 | cpp = p; | |
336 | if (p = getenv("IMAKEMAKE")) | |
337 | make = p; | |
338 | ||
339 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) | |
340 | signal(SIGINT, catch); | |
341 | } | |
342 | ||
343 | AddMakeArg(arg) | |
344 | char *arg; | |
345 | { | |
346 | errno = 0; | |
347 | if (make_argindex >= ARGUMENTS-1) | |
348 | LogFatal("Out of internal storage.", ""); | |
349 | make_argv[ make_argindex++ ] = arg; | |
350 | make_argv[ make_argindex ] = NULL; | |
351 | } | |
352 | ||
353 | AddCppArg(arg) | |
354 | char *arg; | |
355 | { | |
356 | errno = 0; | |
357 | if (cpp_argindex >= ARGUMENTS-1) | |
358 | LogFatal("Out of internal storage.", ""); | |
359 | cpp_argv[ cpp_argindex++ ] = arg; | |
360 | cpp_argv[ cpp_argindex ] = NULL; | |
361 | } | |
362 | ||
363 | SetOpts(argc, argv) | |
364 | int argc; | |
365 | char **argv; | |
366 | { | |
367 | errno = 0; | |
368 | /* | |
369 | * Now gather the arguments for make | |
370 | */ | |
371 | for(argc--, argv++; argc; argc--, argv++) { | |
372 | /* | |
373 | * We intercept these flags. | |
374 | */ | |
375 | if (argv[0][0] == '-') { | |
376 | if (argv[0][1] == 'D') { | |
377 | AddCppArg(argv[0]); | |
378 | } else if (argv[0][1] == 'I') { | |
379 | AddCppArg(argv[0]); | |
380 | } else if (argv[0][1] == 'f') { | |
381 | if (argv[0][2]) | |
382 | Imakefile = argv[0]+2; | |
383 | else { | |
384 | argc--, argv++; | |
385 | if (! argc) | |
386 | LogFatal("No description arg after -f flag\n", ""); | |
387 | Imakefile = argv[0]; | |
388 | } | |
389 | } else if (argv[0][1] == 's') { | |
390 | if (argv[0][2]) | |
391 | Makefile = ((argv[0][2] == '-') && !argv[0][3]) ? | |
392 | NULL : argv[0]+2; | |
393 | else { | |
394 | argc--, argv++; | |
395 | if (!argc) | |
396 | LogFatal("No description arg after -s flag\n", ""); | |
397 | Makefile = ((argv[0][0] == '-') && !argv[0][1]) ? | |
398 | NULL : argv[0]; | |
399 | } | |
400 | show = TRUE; | |
401 | } else if (argv[0][1] == 'e') { | |
402 | Makefile = (argv[0][2] ? argv[0]+2 : NULL); | |
403 | show = FALSE; | |
404 | } else if (argv[0][1] == 'T') { | |
405 | if (argv[0][2]) | |
406 | Template = argv[0]+2; | |
407 | else { | |
408 | argc--, argv++; | |
409 | if (! argc) | |
410 | LogFatal("No description arg after -T flag\n", ""); | |
411 | Template = argv[0]; | |
412 | } | |
413 | } else if (argv[0][1] == 'v') { | |
414 | verbose = TRUE; | |
415 | } else | |
416 | AddMakeArg(argv[0]); | |
417 | } else | |
418 | AddMakeArg(argv[0]); | |
419 | } | |
420 | } | |
421 | ||
422 | char *FindImakefile(Imakefile) | |
423 | char *Imakefile; | |
424 | { | |
425 | int fd; | |
426 | ||
427 | if (Imakefile) { | |
428 | if ((fd = open(Imakefile, O_RDONLY)) < 0) | |
429 | LogFatal("Cannot open %s.", Imakefile); | |
430 | } else { | |
431 | if ((fd = open("Imakefile", O_RDONLY)) < 0) | |
432 | if ((fd = open("imakefile", O_RDONLY)) < 0) | |
433 | LogFatal("No description file.", ""); | |
434 | else | |
435 | Imakefile = "imakefile"; | |
436 | else | |
437 | Imakefile = "Imakefile"; | |
438 | } | |
439 | close (fd); | |
440 | return(Imakefile); | |
441 | } | |
442 | ||
443 | LogFatalI(s, i) | |
444 | char *s; | |
445 | int i; | |
446 | { | |
447 | /*NOSTRICT*/ | |
448 | LogFatal(s, (char *)i); | |
449 | } | |
450 | ||
451 | LogFatal(x0,x1) | |
452 | char *x0, *x1; | |
453 | { | |
454 | extern char *sys_errlist[]; | |
455 | static boolean entered = FALSE; | |
456 | ||
457 | if (entered) | |
458 | return; | |
459 | entered = TRUE; | |
460 | ||
461 | fprintf(stderr, "%s: ", program); | |
462 | if (errno) | |
463 | fprintf(stderr, "%s: ", sys_errlist[ errno ]); | |
464 | fprintf(stderr, x0,x1); | |
465 | fprintf(stderr, " Stop.\n"); | |
466 | wrapup(); | |
467 | exit(1); | |
468 | } | |
469 | ||
470 | showargs(argv) | |
471 | char **argv; | |
472 | { | |
473 | for (; *argv; argv++) | |
474 | fprintf(stderr, "%s ", *argv); | |
475 | fprintf(stderr, "\n"); | |
476 | } | |
477 | ||
478 | cppit(Imakefile, template, outfd, outfname) | |
479 | char *Imakefile; | |
480 | char *template; | |
481 | FILE *outfd; | |
482 | char *outfname; | |
483 | { | |
484 | FILE *pipeFile; | |
485 | int pid, pipefd[2]; | |
486 | waitType status; | |
487 | char *cleanedImakefile; | |
488 | ||
489 | /* | |
490 | * Get a pipe. | |
491 | */ | |
492 | if (pipe(pipefd) < 0) | |
493 | LogFatal("Cannot make a pipe.", ""); | |
494 | ||
495 | /* | |
496 | * Fork and exec cpp | |
497 | */ | |
498 | pid = fork(); | |
499 | if (pid < 0) | |
500 | LogFatal("Cannot fork.", ""); | |
501 | if (pid) { /* parent */ | |
502 | close(pipefd[0]); | |
503 | cleanedImakefile = CleanCppInput(Imakefile); | |
504 | if ((pipeFile = fdopen(pipefd[1], "w")) == NULL) | |
505 | LogFatalI("Cannot fdopen fd %d for output.", pipefd[1]); | |
506 | fprintf(pipeFile, "#define IMAKE_TEMPLATE\t\"%s\"\n", | |
507 | template); | |
508 | fprintf(pipeFile, "#define INCLUDE_IMAKEFILE\t<%s>\n", | |
509 | cleanedImakefile); | |
510 | fprintf(pipeFile, "#include IMAKE_TEMPLATE\n"); | |
511 | fclose(pipeFile); | |
512 | while (wait(&status) > 0) { | |
513 | errno = 0; | |
514 | if (WIFSIGNALED(status)) | |
515 | LogFatalI("Signal %d.", waitSig(status)); | |
516 | if (WIFEXITED(status) && waitCode(status)) | |
517 | LogFatalI("Exit code %d.", waitCode(status)); | |
518 | } | |
519 | CleanCppOutput(outfd, outfname); | |
520 | } else { /* child... dup and exec cpp */ | |
521 | if (verbose) | |
522 | showargs(cpp_argv); | |
523 | dup2(pipefd[0], 0); | |
524 | dup2(fileno(outfd), 1); | |
525 | close(pipefd[1]); | |
526 | execv(cpp, cpp_argv); | |
527 | LogFatal("Cannot exec %s.", cpp); | |
528 | } | |
529 | } | |
530 | ||
531 | makeit() | |
532 | { | |
533 | int pid; | |
534 | waitType status; | |
535 | ||
536 | /* | |
537 | * Fork and exec make | |
538 | */ | |
539 | pid = fork(); | |
540 | if (pid < 0) | |
541 | LogFatal("Cannot fork.", ""); | |
542 | if (pid) { /* parent... simply wait */ | |
543 | while (wait(&status) > 0) { | |
544 | errno = 0; | |
545 | if (WIFSIGNALED(status)) | |
546 | LogFatalI("Signal %d.", waitSig(status)); | |
547 | if (WIFEXITED(status) && waitCode(status)) | |
548 | LogFatalI("Exit code %d.", waitCode(status)); | |
549 | } | |
550 | } else { /* child... dup and exec cpp */ | |
551 | if (verbose) | |
552 | showargs(make_argv); | |
553 | if (make) | |
554 | execv(make, make_argv); | |
555 | else | |
556 | execvp("make", make_argv); | |
557 | LogFatal("Cannot exec %s.", make); | |
558 | } | |
559 | } | |
560 | ||
561 | char *CleanCppInput(Imakefile) | |
562 | char *Imakefile; | |
563 | { | |
564 | FILE *outFile = NULL; | |
565 | int infd; | |
566 | char *buf, /* buffer for file content */ | |
567 | *pbuf, /* walking pointer to buf */ | |
568 | *punwritten, /* pointer to unwritten portion of buf */ | |
569 | *cleanedImakefile = Imakefile, /* return value */ | |
570 | *ptoken, /* pointer to # token */ | |
571 | *pend, /* pointer to end of # token */ | |
572 | savec; /* temporary character holder */ | |
573 | struct stat st; | |
574 | ||
575 | /* | |
576 | * grab the entire file. | |
577 | */ | |
578 | if ((infd = open(Imakefile, O_RDONLY)) < 0) | |
579 | LogFatal("Cannot open %s for input.", Imakefile); | |
580 | fstat(infd, &st); | |
581 | buf = Emalloc(st.st_size+1); | |
cfbe8f42 | 582 | if (read(infd, buf, (size_t) st.st_size) != st.st_size) |
8558199a EA |
583 | LogFatal("Cannot read all of %s:", Imakefile); |
584 | close(infd); | |
585 | buf[ st.st_size ] = '\0'; | |
586 | ||
587 | punwritten = pbuf = buf; | |
588 | while (*pbuf) { | |
589 | /* pad make comments for cpp */ | |
590 | if (*pbuf == '#' && (pbuf == buf || pbuf[-1] == '\n')) { | |
591 | ||
592 | ptoken = pbuf+1; | |
593 | while (*ptoken == ' ' || *ptoken == '\t') | |
594 | ptoken++; | |
595 | pend = ptoken; | |
596 | while (*pend && *pend != ' ' && *pend != '\t' && *pend != '\n') | |
597 | pend++; | |
598 | savec = *pend; | |
599 | *pend = '\0'; | |
600 | if (strcmp(ptoken, "include") | |
601 | && strcmp(ptoken, "define") | |
602 | && strcmp(ptoken, "undef") | |
603 | && strcmp(ptoken, "ifdef") | |
604 | && strcmp(ptoken, "ifndef") | |
605 | && strcmp(ptoken, "else") | |
606 | && strcmp(ptoken, "endif") | |
607 | && strcmp(ptoken, "if")) { | |
608 | if (outFile == NULL) { | |
609 | tmpImakefile = Strdup(tmpImakefile); | |
610 | (void) mktemp(tmpImakefile); | |
611 | cleanedImakefile = tmpImakefile; | |
612 | outFile = fopen(tmpImakefile, "w"); | |
613 | if (outFile == NULL) | |
614 | LogFatal("Cannot open %s for write.\n", | |
615 | tmpImakefile); | |
616 | } | |
617 | fwrite(punwritten, sizeof(char), pbuf-punwritten, outFile); | |
618 | fputs("/**/", outFile); | |
619 | punwritten = pbuf; | |
620 | } | |
621 | *pend = savec; | |
622 | } | |
623 | pbuf++; | |
624 | } | |
625 | if (outFile) { | |
626 | fwrite(punwritten, sizeof(char), pbuf-punwritten, outFile); | |
627 | fclose(outFile); /* also closes the pipe */ | |
628 | } | |
629 | ||
630 | return(cleanedImakefile); | |
631 | } | |
632 | ||
633 | CleanCppOutput(tmpfd, tmpfname) | |
634 | FILE *tmpfd; | |
635 | char *tmpfname; | |
636 | { | |
637 | char *input; | |
638 | int blankline = 0; | |
639 | ||
640 | while(input = ReadLine(tmpfd, tmpfname)) { | |
641 | if (isempty(input)) { | |
642 | if (blankline++) | |
643 | continue; | |
644 | KludgeResetRule(); | |
645 | } else { | |
646 | blankline = 0; | |
647 | KludgeOutputLine(&input); | |
648 | fputs(input, tmpfd); | |
649 | } | |
650 | putc('\n', tmpfd); | |
651 | } | |
652 | fflush(tmpfd); | |
653 | #ifdef NFS_STDOUT_BUG | |
654 | /* | |
655 | * On some systems, NFS seems to leave a large number of nulls at | |
656 | * the end of the file. Ralph Swick says that this kludge makes the | |
657 | * problem go away. | |
658 | */ | |
659 | ftruncate (fileno(tmpfd), (off_t)ftell(tmpfd)); | |
660 | #endif | |
661 | } | |
662 | ||
663 | /* | |
664 | * Determine of a line has nothing in it. As a side effect, we trim white | |
665 | * space from the end of the line. Cpp magic cookies are also thrown away. | |
666 | */ | |
667 | isempty(line) | |
668 | char *line; | |
669 | { | |
670 | char *pend; | |
671 | ||
672 | /* | |
673 | * Check for lines of the form | |
674 | * # n "... | |
675 | * or | |
676 | * # line n "... | |
677 | */ | |
678 | if (*line == '#') { | |
679 | pend = line+1; | |
680 | if (*pend == ' ') | |
681 | pend++; | |
682 | if (strncmp(pend, "line ", 5) == 0) | |
683 | pend += 5; | |
684 | if (isdigit(*pend)) { | |
685 | while (isdigit(*pend)) | |
686 | pend++; | |
687 | if (*pend++ == ' ' && *pend == '"') | |
688 | return(TRUE); | |
689 | } | |
690 | } | |
691 | ||
692 | /* | |
693 | * Find the end of the line and then walk back. | |
694 | */ | |
695 | for (pend=line; *pend; pend++) ; | |
696 | ||
697 | pend--; | |
698 | while (pend >= line && (*pend == ' ' || *pend == '\t')) | |
699 | pend--; | |
700 | *++pend = '\0'; | |
701 | return (*line == '\0'); | |
702 | } | |
703 | ||
704 | /*ARGSUSED*/ | |
705 | char *ReadLine(tmpfd, tmpfname) | |
706 | FILE *tmpfd; | |
707 | char *tmpfname; | |
708 | { | |
709 | static boolean initialized = FALSE; | |
710 | static char *buf, *pline, *end; | |
711 | char *p1, *p2; | |
712 | ||
713 | if (! initialized) { | |
714 | int total_red; | |
715 | struct stat st; | |
716 | ||
717 | /* | |
718 | * Slurp it all up. | |
719 | */ | |
720 | fseek(tmpfd, 0, 0); | |
721 | fstat(fileno(tmpfd), &st); | |
722 | pline = buf = Emalloc(st.st_size+1); | |
723 | total_red = read(fileno(tmpfd), buf, st.st_size); | |
724 | if (total_red != st.st_size) | |
725 | LogFatal("cannot read %s\n", tmpMakefile); | |
726 | end = buf + st.st_size; | |
727 | *end = '\0'; | |
728 | lseek(fileno(tmpfd), 0, 0); | |
729 | #ifdef SYSV | |
730 | freopen(tmpfname, "w+", tmpfd); | |
731 | #else /* !SYSV */ | |
732 | ftruncate(fileno(tmpfd), 0); | |
733 | #endif /* !SYSV */ | |
734 | initialized = TRUE; | |
735 | fprintf (tmpfd, "# Makefile generated by imake - do not edit!\n"); | |
736 | fprintf (tmpfd, "# %s\n", | |
737 | "$XConsortium: imake.c,v 1.65 91/07/25 17:50:17 rws Exp $"); | |
738 | ||
739 | #ifdef FIXUP_CPP_WHITESPACE | |
740 | { | |
741 | static char *cpp_warning[] = { | |
742 | "#", | |
743 | "# The cpp used on this machine replaces all newlines and multiple tabs and", | |
744 | "# spaces in a macro expansion with a single space. Imake tries to compensate", | |
745 | "# for this, but is not always successful.", | |
746 | "#", | |
747 | NULL }; | |
748 | char **cpp; | |
749 | ||
750 | for (cpp = cpp_warning; *cpp; cpp++) { | |
751 | fprintf (tmpfd, "%s\n", *cpp); | |
752 | } | |
753 | } | |
754 | #endif /* FIXUP_CPP_WHITESPACE */ | |
755 | } | |
756 | ||
757 | for (p1 = pline; p1 < end; p1++) { | |
758 | if (*p1 == '@' && *(p1+1) == '@') { /* soft EOL */ | |
759 | *p1++ = '\0'; | |
760 | p1++; /* skip over second @ */ | |
761 | break; | |
762 | } | |
763 | else if (*p1 == '\n') { /* real EOL */ | |
764 | *p1++ = '\0'; | |
765 | break; | |
766 | } | |
767 | } | |
768 | ||
769 | /* | |
770 | * return NULL at the end of the file. | |
771 | */ | |
772 | p2 = (pline == p1 ? NULL : pline); | |
773 | pline = p1; | |
774 | return(p2); | |
775 | } | |
776 | ||
777 | writetmpfile(fd, buf, cnt) | |
778 | FILE *fd; | |
779 | int cnt; | |
780 | char *buf; | |
781 | { | |
782 | errno = 0; | |
783 | if (fwrite(buf, cnt, 1, fd) != 1) | |
784 | LogFatal("Cannot write to %s.", tmpMakefile); | |
785 | } | |
786 | ||
787 | char *Emalloc(size) | |
788 | int size; | |
789 | { | |
790 | char *p; | |
791 | ||
792 | if ((p = malloc(size)) == NULL) | |
793 | LogFatalI("Cannot allocate %d bytes\n", size); | |
794 | return(p); | |
795 | } | |
796 | ||
797 | #ifdef FIXUP_CPP_WHITESPACE | |
798 | KludgeOutputLine(pline) | |
799 | char **pline; | |
800 | { | |
801 | char *p = *pline; | |
802 | ||
803 | switch (*p) { | |
804 | case '#': /*Comment - ignore*/ | |
805 | break; | |
806 | case '\t': /*Already tabbed - ignore it*/ | |
807 | break; | |
808 | case ' ': /*May need a tab*/ | |
809 | default: | |
810 | for (; *p; p++) if (p[0] == ':' && | |
811 | p > *pline && p[-1] != '\\') { | |
812 | if (**pline == ' ') | |
813 | (*pline)++; | |
814 | InRule = TRUE; | |
815 | break; | |
816 | } | |
817 | if (InRule && **pline == ' ') | |
818 | **pline = '\t'; | |
819 | break; | |
820 | } | |
821 | } | |
822 | ||
823 | KludgeResetRule() | |
824 | { | |
825 | InRule = FALSE; | |
826 | } | |
827 | #endif /* FIXUP_CPP_WHITESPACE */ | |
828 | ||
829 | char *Strdup(cp) | |
830 | register char *cp; | |
831 | { | |
832 | register char *new = Emalloc(strlen(cp) + 1); | |
833 | ||
834 | strcpy(new, cp); | |
835 | return new; | |
836 | } |