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4c069d87 | 1 | /* |
2 | * | |
3 | * Copyright 1985, 1986, 1987 by the Massachusetts Institute of Technology | |
4 | * | |
5 | * Permission to use, copy, modify, and distribute this | |
6 | * software and its documentation for any purpose and without | |
7 | * fee is hereby granted, provided that the above copyright | |
8 | * notice appear in all copies and that both that copyright | |
9 | * notice and this permission notice appear in supporting | |
10 | * documentation, and that the name of M.I.T. not be used in | |
11 | * advertising or publicity pertaining to distribution of the | |
12 | * software without specific, written prior permission. | |
13 | * M.I.T. makes no representations about the suitability of | |
14 | * this software for any purpose. It is provided "as is" | |
15 | * without express or implied warranty. | |
16 | * | |
17 | * $Header$ | |
18 | * $Locker$ | |
19 | * | |
20 | * Author: | |
21 | * Todd Brunhoff | |
22 | * Tektronix, inc. | |
23 | * While a guest engineer at Project Athena, MIT | |
24 | * | |
25 | * imake: the include-make program. | |
26 | * | |
27 | * Usage: imake [-Idir] [-Ddefine] [-T] [-f imakefile ] [-s] [-v] [make flags] | |
28 | * | |
29 | * Imake takes a template makefile (Imake.template) and runs cpp on it | |
30 | * producing a temporary makefile in /usr/tmp. It then runs make on | |
31 | * this pre-processed makefile. | |
32 | * Options: | |
33 | * -D define. Same as cpp -D argument. | |
34 | * -I Include directory. Same as cpp -I argument. | |
35 | * -T template. Designate a template other | |
36 | * than Imake.template | |
37 | * -s show. Show the produced makefile on the standard | |
38 | * output. Make is not run is this case. If a file | |
39 | * argument is provided, the output is placed there. | |
40 | * -v verbose. Show the make command line executed. | |
41 | * | |
42 | * Environment variables: | |
43 | * | |
44 | * IMAKEINCLUDE Include directory to use in addition to | |
45 | * "." and "/usr/lib/local/imake.include". | |
46 | * IMAKECPP Cpp to use instead of /lib/cpp | |
47 | * IMAKEMAKE make program to use other than what is | |
48 | * found by searching the $PATH variable. | |
49 | * Other features: | |
50 | * imake reads the entire cpp output into memory and then scans it | |
51 | * for occurences of "@@". If it encounters them, it replaces it with | |
52 | * a newline. It also trims any trailing white space on output lines | |
53 | * (because make gets upset at them). This helps when cpp expands | |
54 | * multi-line macros but you want them to appear on multiple lines. | |
55 | * | |
56 | * The macros MAKEFILE and MAKE are provided as macros | |
57 | * to make. MAKEFILE is set to imake's makefile (not the constructed, | |
58 | * preprocessed one) and MAKE is set to argv[0], i.e. the name of | |
59 | * the imake program. | |
60 | * | |
61 | * Theory of operation: | |
62 | * 1. Determine the name of the imakefile from the command line (-f) | |
63 | * or from the content of the current directory (Imakefile or imakefile). | |
64 | * Call this <imakefile>. This gets added to the arguments for | |
65 | * make as MAKEFILE=<imakefile>. | |
66 | * 2. Determine the name of the template from the command line (-T) | |
67 | * or the default, Imake.template. Call this <template> | |
68 | * 3. Start up cpp an provide it with three lines of input: | |
69 | * #define IMAKE_TEMPLATE "<template>" | |
70 | * #define INCLUDE_IMAKEFILE "<imakefile>" | |
71 | * #include IMAKE_TEMPLATE | |
72 | * Note that the define for INCLUDE_IMAKEFILE is intended for | |
73 | * use in the template file. This implies that the imake is | |
74 | * useless unless the template file contains at least the line | |
75 | * #include INCLUDE_IMAKEFILE | |
76 | * 4. Gather the output from cpp, and clean it up, expanding @@ to | |
77 | * newlines, stripping trailing white space, cpp control lines, | |
78 | * and extra blank lines. This cleaned output is placed in a | |
79 | * temporary file. Call this <makefile>. | |
80 | * 5. Start up make specifying <makefile> as its input. | |
81 | * | |
82 | * The design of the template makefile should therefore be: | |
83 | * <set global macros like CFLAGS, etc.> | |
84 | * <include machine dependent additions> | |
85 | * #include INCLUDE_IMAKEFILE | |
86 | * <add any global targets like 'clean' and long dependencies> | |
87 | */ | |
88 | #include <stdio.h> | |
89 | #include <ctype.h> | |
90 | #include <sys/types.h> | |
91 | #include <sys/file.h> | |
92 | #ifdef SYSV | |
93 | #include <fcntl.h> | |
94 | #else /* !SYSV */ | |
95 | #include <sys/wait.h> | |
96 | #endif /* !SYSV */ | |
97 | #include <sys/signal.h> | |
98 | #include <sys/stat.h> | |
99 | ||
100 | #ifdef SYSV | |
101 | #define dup2(fd1,fd2) ((fd1 == fd2) ? fd1 : \ | |
102 | (close(fd2), fcntl(fd1, F_DUPFD, fd2))) | |
103 | #endif /* SYSV */ | |
104 | #define TRUE 1 | |
105 | #define FALSE 0 | |
106 | #define ARGUMENTS 50 | |
107 | ||
108 | #if defined(sun) || defined(hpux) | |
109 | #define REDUCED_TO_ASCII_SPACE | |
110 | int InRule = FALSE; | |
111 | #endif | |
112 | ||
113 | /* | |
114 | * Some versions of cpp reduce all tabs in macro expansion to a single | |
115 | * space. In addition, the escaped newline may be replaced with a | |
116 | * space instead of being deleted. Blech. | |
117 | */ | |
118 | #ifndef REDUCED_TO_ASCII_SPACE | |
119 | #define KludgeOutputLine(arg) | |
120 | #define KludgeResetRule() | |
121 | #endif | |
122 | ||
123 | typedef u_char boolean; | |
124 | ||
bbc17d4d | 125 | #include <sys/param.h> |
126 | #if BSD > 43 | |
127 | char *cpp = "/usr/bin/cpp"; | |
128 | #else | |
129 | #ifdef apollo | |
4c069d87 | 130 | char *cpp = "/usr/lib/cpp"; |
bbc17d4d | 131 | #else |
132 | char *cpp = "/lib/cpp"; | |
133 | #endif | |
134 | #endif | |
4c069d87 | 135 | |
136 | char *tmpMakefile = "/usr/tmp/tmp-make.XXXXXX"; | |
137 | char *tmpImakefile = "/usr/tmp/tmp-imake.XXXXXX"; | |
138 | char *make_argv[ ARGUMENTS ] = { "make" }; | |
139 | char *cpp_argv[ ARGUMENTS ] = { | |
140 | "cpp", | |
141 | "-I.", | |
142 | #ifdef unix | |
143 | "-Uunix", | |
144 | #endif /* unix */ | |
145 | #ifdef pegasus | |
146 | "-Dpegasus", | |
147 | #endif /* pegasus */ | |
148 | }; | |
149 | int make_argindex; | |
150 | int cpp_argindex; | |
151 | char *make = NULL; | |
152 | char *Imakefile = NULL; | |
153 | char *Makefile = NULL; | |
154 | char *Template = "Imake.template"; | |
155 | char *program; | |
156 | char *FindImakefile(); | |
157 | char *ReadLine(); | |
158 | char *CleanCppInput(); | |
159 | char *strdup(); | |
160 | ||
161 | boolean verbose = FALSE; | |
162 | boolean show = FALSE; | |
163 | extern int errno; | |
164 | extern char *Emalloc(); | |
165 | extern char *realloc(); | |
166 | extern char *getenv(); | |
167 | extern char *mktemp(); | |
168 | ||
169 | main(argc, argv) | |
170 | int argc; | |
171 | char **argv; | |
172 | { | |
173 | FILE *tmpfd; | |
174 | char makeMacro[ BUFSIZ ]; | |
175 | char makefileMacro[ BUFSIZ ]; | |
176 | ||
177 | init(); | |
178 | SetOpts(argc, argv); | |
179 | ||
180 | AddCppArg("-I/usr/lib/local/imake.includes"); | |
181 | ||
182 | Imakefile = FindImakefile(Imakefile); | |
183 | if (Makefile) | |
184 | tmpMakefile = Makefile; | |
185 | else | |
186 | tmpMakefile = mktemp(strdup(tmpMakefile)); | |
187 | AddMakeArg("-f"); | |
188 | AddMakeArg( tmpMakefile ); | |
189 | sprintf(makeMacro, "MAKE=%s", program); | |
190 | AddMakeArg( makeMacro ); | |
191 | sprintf(makefileMacro, "MAKEFILE=%s", Imakefile); | |
192 | AddMakeArg( makefileMacro ); | |
193 | ||
194 | if ((tmpfd = fopen(tmpMakefile, "w+")) == NULL) | |
195 | LogFatal("Cannot create temporary file %s.", tmpMakefile); | |
196 | ||
197 | cppit(Imakefile, Template, tmpfd); | |
198 | ||
199 | if (show) { | |
200 | if (Makefile == NULL) | |
201 | showit(tmpfd); | |
202 | } else | |
203 | makeit(); | |
204 | wrapup(); | |
205 | exit(0); | |
206 | } | |
207 | ||
208 | showit(fd) | |
209 | FILE *fd; | |
210 | { | |
211 | char buf[ BUFSIZ ]; | |
212 | int red; | |
213 | ||
214 | fseek(fd, 0, 0); | |
215 | while ((red = fread(buf, 1, BUFSIZ, fd)) > 0) | |
216 | fwrite(buf, red, 1, stdout); | |
217 | if (red < 0) | |
218 | LogFatal("Cannot write stdout.", ""); | |
219 | } | |
220 | ||
221 | wrapup() | |
222 | { | |
223 | if (tmpMakefile != Makefile) | |
224 | unlink(tmpMakefile); | |
225 | unlink(tmpImakefile); | |
226 | } | |
227 | ||
228 | catch(sig) | |
229 | int sig; | |
230 | { | |
231 | errno = 0; | |
232 | LogFatalI("Signal %d.", sig); | |
233 | } | |
234 | ||
235 | /* | |
236 | * Initialize some variables. | |
237 | */ | |
238 | init() | |
239 | { | |
240 | char *p; | |
241 | ||
242 | make_argindex=0; | |
243 | while (make_argv[ make_argindex ] != NULL) | |
244 | make_argindex++; | |
245 | cpp_argindex = 0; | |
246 | while (cpp_argv[ cpp_argindex ] != NULL) | |
247 | cpp_argindex++; | |
248 | ||
249 | /* | |
250 | * See if the standard include directory is different than | |
251 | * the default. Or if cpp is not the default. Or if the make | |
252 | * found by the PATH variable is not the default. | |
253 | */ | |
254 | if (p = getenv("IMAKEINCLUDE")) { | |
255 | if (*p != '-' || *(p+1) != 'I') | |
256 | LogFatal("Environment var IMAKEINCLUDE %s\n", | |
257 | "must begin with -I"); | |
258 | AddCppArg(p); | |
259 | for (; *p; p++) | |
260 | if (*p == ' ') { | |
261 | *p++ = '\0'; | |
262 | AddCppArg(p); | |
263 | } | |
264 | } | |
265 | if (p = getenv("IMAKECPP")) | |
266 | cpp = p; | |
267 | if (p = getenv("IMAKEMAKE")) | |
268 | make = p; | |
269 | ||
270 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) | |
271 | signal(SIGINT, catch); | |
272 | } | |
273 | ||
274 | AddMakeArg(arg) | |
275 | char *arg; | |
276 | { | |
277 | errno = 0; | |
278 | if (make_argindex >= ARGUMENTS-1) | |
279 | LogFatal("Out of internal storage.", ""); | |
280 | make_argv[ make_argindex++ ] = arg; | |
281 | make_argv[ make_argindex ] = NULL; | |
282 | } | |
283 | ||
284 | AddCppArg(arg) | |
285 | char *arg; | |
286 | { | |
287 | errno = 0; | |
288 | if (cpp_argindex >= ARGUMENTS-1) | |
289 | LogFatal("Out of internal storage.", ""); | |
290 | cpp_argv[ cpp_argindex++ ] = arg; | |
291 | cpp_argv[ cpp_argindex ] = NULL; | |
292 | } | |
293 | ||
294 | SetOpts(argc, argv) | |
295 | int argc; | |
296 | char **argv; | |
297 | { | |
298 | errno = 0; | |
299 | /* | |
300 | * Now gather the arguments for make | |
301 | */ | |
302 | program = argv[0]; | |
303 | for(argc--, argv++; argc; argc--, argv++) { | |
304 | /* | |
305 | * We intercept these flags. | |
306 | */ | |
307 | if (argv[0][0] == '-') { | |
308 | if (argv[0][1] == 'D') { | |
309 | AddCppArg(argv[0]); | |
310 | } else if (argv[0][1] == 'I') { | |
311 | AddCppArg(argv[0]); | |
312 | } else if (argv[0][1] == 'f') { | |
313 | if (argv[0][2]) | |
314 | Imakefile = argv[0]+2; | |
315 | else { | |
316 | argc--, argv++; | |
317 | if (! argc) | |
318 | LogFatal("No description arg after -f flag\n", ""); | |
319 | Imakefile = argv[0]; | |
320 | } | |
321 | } else if (argv[0][1] == 's') { | |
322 | if (argv[0][2]) | |
323 | Makefile = argv[0]+2; | |
324 | else if (argc > 1 && argv[1][0] != '-') { | |
325 | argc--, argv++; | |
326 | Makefile = argv[0]; | |
327 | } | |
328 | show = TRUE; | |
329 | } else if (argv[0][1] == 'T') { | |
330 | if (argv[0][2]) | |
331 | Template = argv[0]+2; | |
332 | else { | |
333 | argc--, argv++; | |
334 | if (! argc) | |
335 | LogFatal("No description arg after -T flag\n", ""); | |
336 | Template = argv[0]; | |
337 | } | |
338 | } else if (argv[0][1] == 'v') { | |
339 | verbose = TRUE; | |
340 | } else | |
341 | AddMakeArg(argv[0]); | |
342 | } else | |
343 | AddMakeArg(argv[0]); | |
344 | } | |
345 | } | |
346 | ||
347 | char *FindImakefile(Imakefile) | |
348 | char *Imakefile; | |
349 | { | |
350 | int fd; | |
351 | ||
352 | if (Imakefile) { | |
353 | if ((fd = open(Imakefile, O_RDONLY)) < 0) | |
354 | LogFatal("Cannot open %s.", Imakefile); | |
355 | } else { | |
356 | if ((fd = open("Imakefile", O_RDONLY)) < 0) | |
357 | if ((fd = open("imakefile", O_RDONLY)) < 0) | |
358 | LogFatal("No description file.", ""); | |
359 | else | |
360 | Imakefile = "imakefile"; | |
361 | else | |
362 | Imakefile = "Imakefile"; | |
363 | } | |
364 | close (fd); | |
365 | return(Imakefile); | |
366 | } | |
367 | ||
368 | LogFatalI(s, i) | |
369 | char *s; | |
370 | int i; | |
371 | { | |
372 | /*NOSTRICT*/ | |
373 | LogFatal(s, (char *)i); | |
374 | } | |
375 | ||
376 | LogFatal(x0,x1) | |
377 | char *x0, *x1; | |
378 | { | |
379 | extern char *sys_errlist[]; | |
380 | static boolean entered = FALSE; | |
381 | ||
382 | if (entered) | |
383 | return; | |
384 | entered = TRUE; | |
385 | ||
386 | fprintf(stderr, "%s: ", program); | |
387 | if (errno) | |
388 | fprintf(stderr, "%s: ", sys_errlist[ errno ]); | |
389 | fprintf(stderr, x0,x1); | |
390 | fprintf(stderr, " Stop.\n"); | |
391 | wrapup(); | |
392 | exit(1); | |
393 | } | |
394 | ||
395 | showargs(argv) | |
396 | char **argv; | |
397 | { | |
398 | for (; *argv; argv++) | |
399 | fprintf(stderr, "%s ", *argv); | |
400 | fprintf(stderr, "\n"); | |
401 | } | |
402 | ||
403 | cppit(Imakefile, template, outfd) | |
404 | char *Imakefile; | |
405 | char *template; | |
406 | FILE *outfd; | |
407 | { | |
408 | FILE *pipeFile; | |
409 | int pid, pipefd[2]; | |
410 | #ifdef SYSV | |
411 | int status; | |
412 | #else /* !SYSV */ | |
413 | union wait status; | |
414 | #endif /* !SYSV */ | |
415 | char *cleanedImakefile; | |
416 | ||
417 | /* | |
418 | * Get a pipe. | |
419 | */ | |
420 | if (pipe(pipefd) < 0) | |
421 | LogFatal("Cannot make a pipe.", ""); | |
422 | ||
423 | /* | |
424 | * Fork and exec cpp | |
425 | */ | |
426 | pid = vfork(); | |
427 | if (pid < 0) | |
428 | LogFatal("Cannot fork.", ""); | |
429 | if (pid) { /* parent */ | |
430 | close(pipefd[0]); | |
431 | cleanedImakefile = CleanCppInput(Imakefile); | |
432 | if ((pipeFile = fdopen(pipefd[1], "w")) == NULL) | |
433 | LogFatalI("Cannot fdopen fd %d for output.", pipefd[1]); | |
434 | fprintf(pipeFile, "#define IMAKE_TEMPLATE\t\"%s\"\n", | |
435 | template); | |
436 | fprintf(pipeFile, "#define INCLUDE_IMAKEFILE\t\"%s\"\n", | |
437 | cleanedImakefile); | |
438 | fprintf(pipeFile, "#include IMAKE_TEMPLATE\n"); | |
439 | fclose(pipeFile); | |
440 | while (wait(&status) > 0) { | |
441 | errno = 0; | |
442 | #ifdef SYSV | |
443 | if ((status >> 8) & 0xff) | |
444 | LogFatalI("Signal %d.", (status >> 8) & 0xff); | |
445 | if (status & 0xff) | |
446 | LogFatalI("Exit code %d.", status & 0xff); | |
447 | #else /* !SYSV */ | |
448 | if (status.w_termsig) | |
449 | LogFatalI("Signal %d.", status.w_termsig); | |
450 | if (status.w_retcode) | |
451 | LogFatalI("Exit code %d.", status.w_retcode); | |
452 | #endif /* !SYSV */ | |
453 | } | |
454 | CleanCppOutput(outfd); | |
455 | } else { /* child... dup and exec cpp */ | |
456 | if (verbose) | |
457 | showargs(cpp_argv); | |
458 | dup2(pipefd[0], 0); | |
459 | dup2(fileno(outfd), 1); | |
460 | close(pipefd[1]); | |
461 | execv(cpp, cpp_argv); | |
462 | LogFatal("Cannot exec %s.", cpp); | |
463 | } | |
464 | } | |
465 | ||
466 | makeit() | |
467 | { | |
468 | int pid; | |
469 | #ifdef SYSV | |
470 | int status; | |
471 | #else /* !SYSV */ | |
472 | union wait status; | |
473 | #endif /* !SYSV */ | |
474 | ||
475 | /* | |
476 | * Fork and exec make | |
477 | */ | |
478 | pid = vfork(); | |
479 | if (pid < 0) | |
480 | LogFatal("Cannot fork.", ""); | |
481 | if (pid) { /* parent... simply wait */ | |
482 | while (wait(&status) > 0) { | |
483 | errno = 0; | |
484 | #ifdef SYSV | |
485 | if ((status >> 8) & 0xff) | |
486 | LogFatalI("Signal %d.", (status >> 8) & 0xff); | |
487 | if (status & 0xff) | |
488 | LogFatalI("Exit code %d.", status & 0xff); | |
489 | #else /* !SYSV */ | |
490 | if (status.w_termsig) | |
491 | LogFatalI("Signal %d.", status.w_termsig); | |
492 | if (status.w_retcode) | |
493 | LogFatalI("Exit code %d.", status.w_retcode); | |
494 | #endif /* !SYSV */ | |
495 | } | |
496 | } else { /* child... dup and exec cpp */ | |
497 | if (verbose) | |
498 | showargs(make_argv); | |
499 | if (make) | |
500 | execv(make, make_argv); | |
501 | else | |
502 | execvp("make", make_argv); | |
503 | LogFatal("Cannot exec %s.", cpp); | |
504 | } | |
505 | } | |
506 | ||
507 | char *CleanCppInput(Imakefile) | |
508 | char *Imakefile; | |
509 | { | |
510 | FILE *outFile = NULL; | |
511 | int infd; | |
512 | char *buf, /* buffer for file content */ | |
513 | *pbuf, /* walking pointer to buf */ | |
514 | *punwritten, /* pointer to unwritten portion of buf */ | |
515 | *cleanedImakefile = Imakefile, /* return value */ | |
516 | *ptoken, /* pointer to # token */ | |
517 | *pend, /* pointer to end of # token */ | |
518 | savec; /* temporary character holder */ | |
519 | struct stat st; | |
520 | ||
521 | /* | |
522 | * grab the entire file. | |
523 | */ | |
524 | if ((infd = open(Imakefile, O_RDONLY)) < 0) | |
525 | LogFatal("Cannot open %s for input.", Imakefile); | |
526 | fstat(infd, &st); | |
527 | buf = Emalloc(st.st_size+1); | |
528 | if (read(infd, buf, st.st_size) != st.st_size) | |
529 | LogFatal("Cannot read all of %s:", Imakefile); | |
530 | close(infd); | |
531 | buf[ st.st_size ] = '\0'; | |
532 | ||
533 | punwritten = pbuf = buf; | |
534 | while (*pbuf) { | |
535 | /* pad make comments for cpp */ | |
536 | if (*pbuf == '#' && (pbuf == buf || pbuf[-1] == '\n')) { | |
537 | ||
538 | ptoken = pbuf+1; | |
539 | while (*ptoken == ' ' || *ptoken == '\t') | |
540 | ptoken++; | |
541 | pend = ptoken; | |
542 | while (*pend && *pend != ' ' && *pend != '\t' && *pend != '\n') | |
543 | pend++; | |
544 | savec = *pend; | |
545 | *pend = '\0'; | |
546 | if (strcmp(ptoken, "include") | |
547 | && strcmp(ptoken, "define") | |
548 | && strcmp(ptoken, "undef") | |
549 | && strcmp(ptoken, "ifdef") | |
550 | && strcmp(ptoken, "ifndef") | |
551 | && strcmp(ptoken, "else") | |
552 | && strcmp(ptoken, "endif") | |
553 | && strcmp(ptoken, "if")) { | |
554 | if (outFile == NULL) { | |
555 | tmpImakefile = mktemp(strdup(tmpImakefile)); | |
556 | cleanedImakefile = tmpImakefile; | |
557 | outFile = fopen(tmpImakefile, "w"); | |
558 | if (outFile == NULL) | |
559 | LogFatal("Cannot open %s for write.\n", | |
560 | tmpImakefile); | |
561 | } | |
562 | fwrite(punwritten, sizeof(char), pbuf-punwritten, outFile); | |
563 | fputs("/**/", outFile); | |
564 | punwritten = pbuf; | |
565 | } | |
566 | *pend = savec; | |
567 | } | |
568 | pbuf++; | |
569 | } | |
570 | if (outFile) { | |
571 | fwrite(punwritten, sizeof(char), pbuf-punwritten, outFile); | |
572 | fclose(outFile); /* also closes the pipe */ | |
573 | } | |
574 | ||
575 | return(cleanedImakefile); | |
576 | } | |
577 | ||
578 | CleanCppOutput(tmpfd) | |
579 | FILE *tmpfd; | |
580 | { | |
581 | char *input; | |
582 | int blankline = 0; | |
583 | ||
584 | while(input = ReadLine(tmpfd)) { | |
585 | if (isempty(input)) { | |
586 | if (blankline++) | |
587 | continue; | |
588 | KludgeResetRule(); | |
589 | } else { | |
590 | blankline = 0; | |
591 | KludgeOutputLine(&input); | |
592 | fputs(input, tmpfd); | |
593 | } | |
594 | putc('\n', tmpfd); | |
595 | } | |
596 | fflush(tmpfd); | |
597 | } | |
598 | ||
599 | /* | |
600 | * Determine of a line has nothing in it. As a side effect, we trim white | |
601 | * space from the end of the line. Cpp magic cookies are also thrown away. | |
602 | */ | |
603 | isempty(line) | |
604 | char *line; | |
605 | { | |
606 | char *pend; | |
607 | ||
608 | /* | |
609 | * Check for lines of the form | |
610 | * # n "... | |
611 | * or | |
612 | * # line n "... | |
613 | */ | |
614 | if (*line == '#') { | |
615 | pend = line+1; | |
616 | if (*pend == ' ') | |
617 | pend++; | |
618 | if (strncmp(pend, "line ", 5) == 0) | |
619 | pend += 5; | |
620 | if (isdigit(*pend)) { | |
621 | while (isdigit(*pend)) | |
622 | pend++; | |
623 | if (*pend++ == ' ' && *pend == '"') | |
624 | return(TRUE); | |
625 | } | |
626 | } | |
627 | ||
628 | /* | |
629 | * Find the end of the line and then walk back. | |
630 | */ | |
631 | for (pend=line; *pend; pend++) ; | |
632 | ||
633 | pend--; | |
634 | while (pend >= line && (*pend == ' ' || *pend == '\t')) | |
635 | pend--; | |
636 | *++pend = '\0'; | |
637 | return (*line == '\0'); | |
638 | } | |
639 | ||
640 | char *ReadLine(tmpfd) | |
641 | FILE *tmpfd; | |
642 | { | |
643 | static boolean initialized = FALSE; | |
644 | static char *buf, *pline, *end; | |
645 | char *p1, *p2; | |
646 | ||
647 | if (! initialized) { | |
648 | int total_red; | |
649 | struct stat st; | |
650 | ||
651 | /* | |
652 | * Slurp it all up. | |
653 | */ | |
654 | fseek(tmpfd, 0, 0); | |
655 | fstat(fileno(tmpfd), &st); | |
656 | pline = buf = Emalloc(st.st_size+1); | |
657 | total_red = read(fileno(tmpfd), buf, st.st_size); | |
658 | if (total_red != st.st_size) | |
659 | LogFatal("cannot read %s\n", tmpMakefile); | |
660 | end = buf + st.st_size; | |
661 | *end = '\0'; | |
662 | lseek(fileno(tmpfd), 0, 0); | |
663 | ftruncate(fileno(tmpfd), 0); | |
664 | initialized = TRUE; | |
665 | #ifdef REDUCED_TO_ASCII_SPACE | |
666 | fprintf(tmpfd, "#\n"); | |
667 | fprintf(tmpfd, "# Warning: the cpp used on this machine replaces\n"); | |
668 | fprintf(tmpfd, "# all newlines and multiple tabs/spaces in a macro\n"); | |
669 | fprintf(tmpfd, "# expansion with a single space. Imake tries to\n"); | |
670 | fprintf(tmpfd, "# compensate for this, but is not always\n"); | |
671 | fprintf(tmpfd, "# successful.\n"); | |
672 | fprintf(tmpfd, "#\n"); | |
673 | #endif /* REDUCED_TO_ASCII_SPACE */ | |
674 | } | |
675 | ||
676 | for (p1 = pline; p1 < end; p1++) { | |
677 | if (*p1 == '@' && *(p1+1) == '@') { /* soft EOL */ | |
678 | *p1++ = '\0'; | |
679 | p1++; /* skip over second @ */ | |
680 | break; | |
681 | } | |
682 | else if (*p1 == '\n') { /* real EOL */ | |
683 | *p1++ = '\0'; | |
684 | break; | |
685 | } | |
686 | } | |
687 | ||
688 | /* | |
689 | * return NULL at the end of the file. | |
690 | */ | |
691 | p2 = (pline == p1 ? NULL : pline); | |
692 | pline = p1; | |
693 | return(p2); | |
694 | } | |
695 | ||
696 | writetmpfile(fd, buf, cnt) | |
697 | FILE *fd; | |
698 | int cnt; | |
699 | char *buf; | |
700 | { | |
701 | errno = 0; | |
702 | if (fwrite(buf, cnt, 1, fd) != 1) | |
703 | LogFatal("Cannot write to %s.", tmpMakefile); | |
704 | } | |
705 | ||
706 | char *Emalloc(size) | |
707 | int size; | |
708 | { | |
709 | char *p, *malloc(); | |
710 | ||
711 | if ((p = malloc(size)) == NULL) | |
712 | LogFatalI("Cannot allocate %d bytes\n", size); | |
713 | return(p); | |
714 | } | |
715 | ||
716 | #ifdef REDUCED_TO_ASCII_SPACE | |
717 | KludgeOutputLine(pline) | |
718 | char **pline; | |
719 | { | |
720 | char *p = *pline; | |
721 | ||
722 | switch (*p) { | |
723 | case '#': /*Comment - ignore*/ | |
724 | break; | |
725 | case '\t': /*Already tabbed - ignore it*/ | |
726 | break; | |
727 | case ' ': /*May need a tab*/ | |
728 | default: | |
729 | while (*p) if (*p++ == ':') { | |
730 | if (**pline == ' ') | |
731 | (*pline)++; | |
732 | InRule = TRUE; | |
733 | break; | |
734 | } | |
735 | if (InRule && **pline == ' ') | |
736 | **pline = '\t'; | |
737 | break; | |
738 | } | |
739 | } | |
740 | ||
741 | KludgeResetRule() | |
742 | { | |
743 | InRule = FALSE; | |
744 | } | |
745 | #endif /* REDUCED_TO_ASCII_SPACE */ | |
746 | ||
747 | char *strdup(cp) | |
748 | register char *cp; | |
749 | { | |
750 | register char *new = Emalloc(strlen(cp) + 1); | |
751 | ||
752 | strcpy(new, cp); | |
753 | return new; | |
754 | } |