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1.1 ! root 1: /* fix-header.c - Make C header file suitable for C++. ! 2: Copyright (C) 1993 Free Software Foundation, Inc. ! 3: ! 4: This program is free software; you can redistribute it and/or modify it ! 5: under the terms of the GNU General Public License as published by the ! 6: Free Software Foundation; either version 2, or (at your option) any ! 7: later version. ! 8: ! 9: This program is distributed in the hope that it will be useful, ! 10: but WITHOUT ANY WARRANTY; without even the implied warranty of ! 11: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ! 12: GNU General Public License for more details. ! 13: ! 14: You should have received a copy of the GNU General Public License ! 15: along with this program; if not, write to the Free Software ! 16: Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ ! 17: ! 18: /* This program massages a system include file (such as stdio.h), ! 19: into a form more conformant with ANSI/POSIX, and more suitable for C++: ! 20: ! 21: * extern "C" { ... } braces are added (inside #ifndef __cplusplus), ! 22: if they seem to be needed. These prevent C++ compilers from name ! 23: mangling the functions inside the braces. ! 24: ! 25: * If an old-style incomplete function declaration is seen (without ! 26: an argument list), and it is a "standard" function listed in ! 27: the file sys-protos.h (and with a non-empty argument list), then ! 28: the declaration is converted to a complete prototype by replacing ! 29: the empty parameter list with the argument lust from sys-protos.h. ! 30: ! 31: * The program can be given a list of (names of) required standard ! 32: functions (such as fclose for stdio.h). If a reqquired function ! 33: is not seen in the input, then a prototype for it will be ! 34: written to the output. ! 35: ! 36: * If all of the non-comment code of the original file is protected ! 37: against multiple inclusion: ! 38: #ifndef FOO ! 39: #define FOO ! 40: <body of include file> ! 41: #endif ! 42: then extra matter added to the include file is placed inside the <body>. ! 43: ! 44: * If the input file is OK (nothing needs to be done); ! 45: the output file is not written (nor removed if it exists). ! 46: ! 47: There are also some special actions that are done for certain ! 48: well-known standard include files: ! 49: ! 50: * If argv[1] is "sys/stat.h", the Posix.1 macros ! 51: S_ISBLK, S_ISCHR, S_ISDIR, S_ISFIFO, S_ISLNK, S_ISREG are added if ! 52: they were missing, and the corresponding "traditional" S_IFxxx ! 53: macros were defined. ! 54: ! 55: * If argv[1] is "errno.h", errno is declared if it was missing. ! 56: ! 57: * TODO: The input file should be read complete into memory, because: ! 58: a) it needs to be scanned twice anyway, and ! 59: b) it would be nice to allow update in place. ! 60: ! 61: Usage: ! 62: fix-header FOO.H INFILE.H OUTFILE.H REQUIRED_FUNCS <SCAN-FILE ! 63: where: ! 64: * FOO.H is the relative file name of the include file, ! 65: as it would be #include'd by a C file. (E.g. stdio.h) ! 66: * INFILE.H is a full pathname for the input file (e.g. /usr/include/stdio.h) ! 67: * OUTFILE.H is the full pathname for where to write the output file, ! 68: if anything needs to be done. (e.g. ./include/stdio.h) ! 69: * SCAN-FILE is the output of the scan-decls program. ! 70: * REQUIRED_FUNCS is a list of required function (e.g. fclose for stdio.h). ! 71: ! 72: Written by Per Bothner <[email protected]>, July 1993. */ ! 73: ! 74: #include <stdio.h> ! 75: #include <ctype.h> ! 76: #include <sys/types.h> ! 77: #include <sys/stat.h> ! 78: #ifndef O_RDONLY ! 79: #define O_RDONLY 0 ! 80: #endif ! 81: #include "hconfig.h" ! 82: #include "obstack.h" ! 83: #include "scan.h" ! 84: ! 85: int verbose = 0; ! 86: int partial_count = 0; ! 87: int missing_extern_C_count = 0; ! 88: int missing_errno = 0; ! 89: ! 90: #include "xsys-protos.h" ! 91: ! 92: char *inf_buffer; ! 93: char *inf_limit; ! 94: char *inf_ptr; ! 95: ! 96: /* Certain standard files get extra treatment */ ! 97: ! 98: enum special_file ! 99: { ! 100: no_special, ! 101: errno_special, ! 102: sys_stat_special ! 103: }; ! 104: ! 105: enum special_file special_file_handling = no_special; ! 106: ! 107: /* The following are only used when handling sys/stat.h */ ! 108: /* They are set if the corresponding macro has been seen. */ ! 109: int seen_S_IFBLK = 0, seen_S_ISBLK = 0; ! 110: int seen_S_IFCHR = 0, seen_S_ISCHR = 0; ! 111: int seen_S_IFDIR = 0, seen_S_ISDIR = 0; ! 112: int seen_S_IFIFO = 0, seen_S_ISFIFO = 0; ! 113: int seen_S_IFLNK = 0, seen_S_ISLNK = 0; ! 114: int seen_S_IFREG = 0, seen_S_ISREG = 0; ! 115: ! 116: /* Wrapper around free, to avoid prototype clashes. */ ! 117: ! 118: void ! 119: xfree (ptr) ! 120: char *ptr; ! 121: { ! 122: free (ptr); ! 123: } ! 124: ! 125: /* Avoid error if config defines abort as fancy_abort. ! 126: It's not worth "really" implementing this because ordinary ! 127: compiler users never run fix-header. */ ! 128: ! 129: void ! 130: fancy_abort () ! 131: { ! 132: abort (); ! 133: } ! 134: ! 135: #define obstack_chunk_alloc xmalloc ! 136: #define obstack_chunk_free xfree ! 137: struct obstack scan_file_obstack; ! 138: ! 139: /* NOTE: If you edit this, also edit gen-protos.c !! */ ! 140: struct fn_decl * ! 141: lookup_std_proto (name) ! 142: char *name; ! 143: { ! 144: int i = hash (name) % HASH_SIZE; ! 145: int i0 = i; ! 146: for (;;) ! 147: { ! 148: struct fn_decl *fn; ! 149: if (hash_tab[i] == 0) ! 150: return NULL; ! 151: fn = &std_protos[hash_tab[i]]; ! 152: if (strcmp (fn->fname, name) == 0) ! 153: return fn; ! 154: i = (i+1) % HASH_SIZE; ! 155: if (i == i0) ! 156: abort (); ! 157: } ! 158: } ! 159: ! 160: char *inc_filename; ! 161: int inc_filename_length; ! 162: char *progname = "fix-header"; ! 163: FILE *outf; ! 164: sstring buf; ! 165: sstring line; ! 166: ! 167: int lbrac_line, rbrac_line; ! 168: ! 169: char **required_functions; ! 170: int required_unseen_count; ! 171: ! 172: int ! 173: write_lbrac () ! 174: { ! 175: ! 176: if (missing_extern_C_count + required_unseen_count > 0) ! 177: fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n"); ! 178: ! 179: if (partial_count) ! 180: { ! 181: fprintf (outf, "#ifndef _PARAMS\n"); ! 182: fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n"); ! 183: fprintf (outf, "#define _PARAMS(ARGS) ARGS\n"); ! 184: fprintf (outf, "#else\n"); ! 185: fprintf (outf, "#define _PARAMS(ARGS) ()\n"); ! 186: fprintf (outf, "#endif\n#endif /* _PARAMS */\n"); ! 187: } ! 188: } ! 189: ! 190: struct partial_proto ! 191: { ! 192: struct partial_proto *next; ! 193: char *fname; /* name of function */ ! 194: char *rtype; /* return type */ ! 195: struct fn_decl *fn; ! 196: int line_seen; ! 197: }; ! 198: ! 199: struct partial_proto *partial_proto_list = NULL; ! 200: ! 201: struct partial_proto required_dummy_proto; ! 202: #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto) ! 203: #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto) ! 204: #define CLEAR_REQUIRED(FN) ((FN)->partial = 0) ! 205: ! 206: void ! 207: recognized_macro (fname) ! 208: char *fname; ! 209: { ! 210: /* The original include file defines fname as a macro. */ ! 211: struct fn_decl *fn = lookup_std_proto (fname); ! 212: ! 213: /* Since fname is a macro, don't require a prototype for it. */ ! 214: if (fn && REQUIRED (fn)) ! 215: { ! 216: CLEAR_REQUIRED (fn); ! 217: required_unseen_count--; ! 218: } ! 219: ! 220: switch (special_file_handling) ! 221: { ! 222: case errno_special: ! 223: if (strcmp (fname, "errno") == 0) missing_errno = 0; ! 224: break; ! 225: case sys_stat_special: ! 226: if (fname[0] == 'S' && fname[1] == '_') ! 227: { ! 228: if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++; ! 229: else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++; ! 230: else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++; ! 231: else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++; ! 232: else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++; ! 233: else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++; ! 234: else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++; ! 235: else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++; ! 236: else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++; ! 237: else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++; ! 238: else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++; ! 239: else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++; ! 240: } ! 241: } ! 242: } ! 243: ! 244: void ! 245: recognized_extern (name, type) ! 246: char *name; ! 247: char *type; ! 248: { ! 249: switch (special_file_handling) ! 250: { ! 251: case errno_special: ! 252: if (strcmp (name, "errno") == 0) missing_errno = 0; ! 253: break; ! 254: } ! 255: } ! 256: ! 257: /* Called by scan_decls if it saw a function definition for a function ! 258: named FNAME, with return type RTYPE, and argument list ARGS, ! 259: in source file FILE_SEEN on line LINE_SEEN. ! 260: KIND is 'I' for an inline function; ! 261: 'F' if a normal function declaration preceded by 'extern "C"' ! 262: (or nested inside 'extern "C"' braces); or ! 263: 'f' for other function declarations. */ ! 264: ! 265: void ! 266: recognized_function (fname, kind, rtype, args, file_seen, line_seen) ! 267: char *fname; ! 268: int kind; /* One of 'f' 'F' or 'I' */ ! 269: char *rtype; ! 270: char *args; ! 271: char *file_seen; ! 272: int line_seen; ! 273: { ! 274: struct partial_proto *partial; ! 275: int i; ! 276: struct fn_decl *fn; ! 277: if (kind == 'f') ! 278: missing_extern_C_count++; ! 279: ! 280: fn = lookup_std_proto (fname); ! 281: ! 282: /* Remove the function from the list of required function. */ ! 283: if (fn && REQUIRED (fn)) ! 284: { ! 285: CLEAR_REQUIRED (fn); ! 286: required_unseen_count--; ! 287: } ! 288: ! 289: /* If we have a full prototype, we're done. */ ! 290: if (args[0] != '\0') ! 291: return; ! 292: ! 293: if (kind == 'I') /* don't edit inline function */ ! 294: return; ! 295: ! 296: /* If the partial prototype was included from some other file, ! 297: we don't need to patch it up (in this run). */ ! 298: i = strlen (file_seen); ! 299: if (i < inc_filename_length ! 300: || strcmp (inc_filename, file_seen + (i - inc_filename_length)) != 0) ! 301: return; ! 302: ! 303: if (fn == NULL) ! 304: return; ! 305: if (fn->params[0] == '\0' || strcmp (fn->params, "void") == 0) ! 306: return; ! 307: ! 308: /* We only have a partial function declaration, ! 309: so remember that we have to add a complete prototype. */ ! 310: partial_count++; ! 311: partial = (struct partial_proto*) ! 312: obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto)); ! 313: partial->fname = obstack_alloc (&scan_file_obstack, strlen (fname) + 1); ! 314: strcpy (partial->fname, fname); ! 315: partial->rtype = obstack_alloc (&scan_file_obstack, strlen (rtype) + 1); ! 316: strcpy (partial->rtype, rtype); ! 317: partial->line_seen = line_seen; ! 318: partial->fn = fn; ! 319: fn->partial = partial; ! 320: partial->next = partial_proto_list; ! 321: partial_proto_list = partial; ! 322: if (verbose) ! 323: { ! 324: fprintf (stderr, "(%s: %s non-prototype function declaration.)\n", ! 325: inc_filename, fname); ! 326: } ! 327: } ! 328: ! 329: void ! 330: read_scan_file (scan_file) ! 331: FILE *scan_file; ! 332: { ! 333: char **rptr; ! 334: obstack_init (&scan_file_obstack); ! 335: ! 336: scan_decls (scan_file); ! 337: ! 338: if (missing_extern_C_count + required_unseen_count + partial_count ! 339: + missing_errno == 0) ! 340: { ! 341: if (verbose) ! 342: fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename); ! 343: exit (0); ! 344: } ! 345: if (!verbose) ! 346: fprintf (stderr, "%s: fixing %s\n", progname, inc_filename); ! 347: else ! 348: { ! 349: if (required_unseen_count) ! 350: fprintf (stderr, "%s: %d missing function declarations.\n", ! 351: inc_filename, required_unseen_count); ! 352: if (partial_count) ! 353: fprintf (stderr, "%s: %d non-prototype function declarations.\n", ! 354: inc_filename, partial_count); ! 355: if (missing_extern_C_count) ! 356: fprintf (stderr, ! 357: "%s: %d declarations not protected by extern \"C\".\n", ! 358: inc_filename, missing_extern_C_count); ! 359: } ! 360: } ! 361: ! 362: write_rbrac () ! 363: { ! 364: struct fn_decl *fn; ! 365: char **rptr; ! 366: register struct partial_proto *partial; ! 367: ! 368: if (required_unseen_count) ! 369: fprintf (outf, "#ifdef __cplusplus\n"); ! 370: ! 371: /* Now we print out prototypes for those functions that we haven't seen. */ ! 372: for (rptr = required_functions; *rptr; rptr++) ! 373: { ! 374: int macro_protect = 0; ! 375: ! 376: fn = lookup_std_proto (*rptr); ! 377: if (fn == NULL || !REQUIRED (fn)) ! 378: continue; ! 379: ! 380: /* In the case of memmove, protect in case the application ! 381: defines it as a macro before including the header. */ ! 382: if (!strcmp (fn->fname, "memmove") ! 383: || !strcmp (fn->fname, "vprintf") ! 384: || !strcmp (fn->fname, "vfprintf") ! 385: || !strcmp (fn->fname, "vsprintf") ! 386: || !strcmp (fn->fname, "rewinddir")) ! 387: macro_protect = 1; ! 388: ! 389: if (macro_protect) ! 390: fprintf (outf, "#ifndef %s\n", fn->fname); ! 391: fprintf (outf, "extern %s %s (%s);\n", ! 392: fn->rtype, fn->fname, fn->params); ! 393: if (macro_protect) ! 394: fprintf (outf, "#endif\n"); ! 395: } ! 396: if (required_unseen_count) ! 397: fprintf (outf, ! 398: "#endif /* defined(__cplusplus) */\n"); ! 399: ! 400: switch (special_file_handling) ! 401: { ! 402: case errno_special: ! 403: if (missing_errno) ! 404: fprintf (outf, "extern int errno;\n"); ! 405: break; ! 406: case sys_stat_special: ! 407: if (!seen_S_ISBLK && seen_S_IFBLK) ! 408: fprintf (outf, ! 409: "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n"); ! 410: if (!seen_S_ISCHR && seen_S_IFCHR) ! 411: fprintf (outf, ! 412: "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n"); ! 413: if (!seen_S_ISDIR && seen_S_IFDIR) ! 414: fprintf (outf, ! 415: "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n"); ! 416: if (!seen_S_ISFIFO && seen_S_IFIFO) ! 417: fprintf (outf, ! 418: "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n"); ! 419: if (!seen_S_ISLNK && seen_S_IFLNK) ! 420: fprintf (outf, ! 421: "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n"); ! 422: if (!seen_S_ISREG && seen_S_IFREG) ! 423: fprintf (outf, ! 424: "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n"); ! 425: break; ! 426: } ! 427: ! 428: ! 429: if (missing_extern_C_count + required_unseen_count > 0) ! 430: fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n"); ! 431: } ! 432: ! 433: char * ! 434: strdup (str) ! 435: char *str; ! 436: { ! 437: char *copy = (char *) xmalloc (strlen (str) + 1); ! 438: strcpy (copy, str); ! 439: return copy; ! 440: } ! 441: ! 442: /* Returns 1 iff the file is properly protected from multiple inclusion: ! 443: #ifndef PROTECT_NAME ! 444: #define PROTECT_NAME ! 445: #endif ! 446: ! 447: */ ! 448: ! 449: #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char*)inf_ptr++ : EOF) ! 450: #define INF_UNGET(c) ((c)!=EOF && inf_ptr--) ! 451: ! 452: int ! 453: inf_skip_spaces (c) ! 454: int c; ! 455: { ! 456: for (;;) ! 457: { ! 458: if (c == ' ' || c == '\t') ! 459: c = INF_GET (); ! 460: else if (c == '/') ! 461: { ! 462: c = INF_GET (); ! 463: if (c != '*') ! 464: { ! 465: INF_UNGET (c); ! 466: return '/'; ! 467: } ! 468: c = INF_GET (); ! 469: for (;;) ! 470: { ! 471: if (c == EOF) ! 472: return EOF; ! 473: else if (c != '*') ! 474: { ! 475: if (c == '\n') ! 476: source_lineno++, lineno++; ! 477: c = INF_GET (); ! 478: } ! 479: else if ((c = INF_GET ()) == '/') ! 480: return INF_GET (); ! 481: } ! 482: } ! 483: else ! 484: break; ! 485: } ! 486: return c; ! 487: } ! 488: ! 489: /* Read into STR from inf_buffer upto DELIM. */ ! 490: ! 491: int ! 492: inf_read_upto (str, delim) ! 493: sstring *str; ! 494: int delim; ! 495: { ! 496: int ch; ! 497: for (;;) ! 498: { ! 499: ch = INF_GET (); ! 500: if (ch == EOF || ch == delim) ! 501: break; ! 502: SSTRING_PUT (str, ch); ! 503: } ! 504: MAKE_SSTRING_SPACE (str, 1); ! 505: *str->ptr = 0; ! 506: return ch; ! 507: } ! 508: ! 509: int ! 510: inf_scan_ident (s, c) ! 511: register sstring *s; ! 512: int c; ! 513: { ! 514: s->ptr = s->base; ! 515: if (isalpha (c) || c == '_') ! 516: { ! 517: for (;;) ! 518: { ! 519: SSTRING_PUT (s, c); ! 520: c = INF_GET (); ! 521: if (c == EOF || !(isalnum (c) || c == '_')) ! 522: break; ! 523: } ! 524: } ! 525: MAKE_SSTRING_SPACE (s, 1); ! 526: *s->ptr = 0; ! 527: return c; ! 528: } ! 529: ! 530: /* Returns 1 if the file is correctly protected against multiple ! 531: inclusion, setting *ifndef_line to the line number of the initial #ifndef ! 532: and setting *endif_line to the final #endif. ! 533: Otherwise return 0. */ ! 534: ! 535: int ! 536: check_protection (ifndef_line, endif_line) ! 537: int *ifndef_line, *endif_line; ! 538: { ! 539: int c; ! 540: int if_nesting = 1; /* Level of nesting of #if's */ ! 541: char *protect_name = NULL; /* Identifier following initial #ifndef */ ! 542: int define_seen = 0; ! 543: ! 544: /* Skip initial white space (including comments). */ ! 545: for (;; lineno++) ! 546: { ! 547: c = inf_skip_spaces (' '); ! 548: if (c == EOF) ! 549: return 0; ! 550: if (c != '\n') ! 551: break; ! 552: } ! 553: if (c != '#') ! 554: return 0; ! 555: c = inf_scan_ident (&buf, inf_skip_spaces (' ')); ! 556: if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0) ! 557: return 0; ! 558: ! 559: /* So far so good: We've seen an initial #ifndef. */ ! 560: *ifndef_line = lineno; ! 561: c = inf_scan_ident (&buf, inf_skip_spaces (c)); ! 562: if (SSTRING_LENGTH (&buf) == 0 || c == EOF) ! 563: return 0; ! 564: protect_name = strdup (buf.base); ! 565: ! 566: INF_UNGET (c); ! 567: c = inf_read_upto (&buf, '\n'); ! 568: if (c == EOF) ! 569: return 0; ! 570: lineno++; ! 571: ! 572: for (;;) ! 573: { ! 574: c = inf_skip_spaces (' '); ! 575: if (c == EOF) ! 576: return 0; ! 577: if (c == '\n') ! 578: { ! 579: lineno++; ! 580: continue; ! 581: } ! 582: if (c != '#') ! 583: goto skip_to_eol; ! 584: c = inf_scan_ident (&buf, inf_skip_spaces (' ')); ! 585: if (SSTRING_LENGTH (&buf) == 0) ! 586: ; ! 587: else if (!strcmp (buf.base, "ifndef") ! 588: || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if")) ! 589: { ! 590: if_nesting++; ! 591: } ! 592: else if (!strcmp (buf.base, "endif")) ! 593: { ! 594: if_nesting--; ! 595: if (if_nesting == 0) ! 596: break; ! 597: } ! 598: else if (!strcmp (buf.base, "else")) ! 599: { ! 600: if (if_nesting == 1) ! 601: return 0; ! 602: } ! 603: else if (!strcmp (buf.base, "define")) ! 604: { ! 605: if (if_nesting != 1) ! 606: goto skip_to_eol; ! 607: c = inf_skip_spaces (c); ! 608: c = inf_scan_ident (&buf, c); ! 609: if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0) ! 610: define_seen = 1; ! 611: } ! 612: skip_to_eol: ! 613: for (;;) ! 614: { ! 615: if (c == '\n' || c == EOF) ! 616: break; ! 617: c = INF_GET (); ! 618: } ! 619: if (c == EOF) ! 620: return 0; ! 621: lineno++; ! 622: } ! 623: ! 624: if (!define_seen) ! 625: return 0; ! 626: *endif_line = lineno; ! 627: /* Skip final white space (including comments). */ ! 628: for (;;) ! 629: { ! 630: c = inf_skip_spaces (' '); ! 631: if (c == EOF) ! 632: break; ! 633: if (c != '\n') ! 634: return 0; ! 635: } ! 636: ! 637: return 1; ! 638: } ! 639: ! 640: int ! 641: main (argc, argv) ! 642: int argc; ! 643: char **argv; ! 644: { ! 645: int inf_fd; ! 646: struct stat sbuf; ! 647: int c; ! 648: int i, done; ! 649: char *cptr, *cptr0, **pptr; ! 650: int ifndef_line; ! 651: int endif_line; ! 652: long to_read; ! 653: long int inf_size; ! 654: ! 655: if (argv[0] && argv[0][0]) ! 656: { ! 657: register char *p; ! 658: ! 659: progname = 0; ! 660: for (p = argv[0]; *p; p++) ! 661: if (*p == '/') ! 662: progname = p; ! 663: progname = progname ? progname+1 : argv[0]; ! 664: } ! 665: ! 666: if (argc < 4) ! 667: { ! 668: fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h req_funcs <scan-file-name\n", ! 669: progname); ! 670: exit (-1); ! 671: } ! 672: ! 673: inc_filename = argv[1]; ! 674: inc_filename_length = strlen (inc_filename); ! 675: if (strcmp (inc_filename, "sys/stat.h") == 0) ! 676: special_file_handling = sys_stat_special; ! 677: else if (strcmp (inc_filename, "errno.h") == 0) ! 678: special_file_handling = errno_special, missing_errno = 1; ! 679: ! 680: /* Calculate an upper bound of the number of function names in argv[4] */ ! 681: for (i = 1, cptr = argv[4]; *cptr; cptr++) ! 682: if (*cptr == ' ') i++; ! 683: /* Find the list of prototypes required for this include file. */ ! 684: required_functions = (char**)xmalloc ((i+1) * sizeof (char*)); ! 685: for (cptr = argv[4], cptr0 = cptr, pptr = required_functions, done = 0; ! 686: !done; cptr++) ! 687: { ! 688: done = *cptr == '\0'; ! 689: if (*cptr == ' ' || done) ! 690: { ! 691: *cptr = '\0'; ! 692: if (cptr > cptr0) ! 693: { ! 694: struct fn_decl *fn = lookup_std_proto (cptr0); ! 695: *pptr++ = cptr0; ! 696: if (fn == NULL) ! 697: fprintf (stderr, "Internal error: No prototype for %s\n", ! 698: cptr0); ! 699: else ! 700: SET_REQUIRED (fn); ! 701: } ! 702: cptr0 = cptr + 1; ! 703: } ! 704: } ! 705: required_unseen_count = pptr - required_functions; ! 706: *pptr = 0; ! 707: ! 708: read_scan_file (stdin); ! 709: ! 710: inf_fd = open (argv[2], O_RDONLY, 0666); ! 711: if (inf_fd < 0) ! 712: { ! 713: fprintf (stderr, "%s: Cannot open '%s' for reading -", ! 714: progname, argv[2]); ! 715: perror (NULL); ! 716: exit (-1); ! 717: } ! 718: if (fstat (inf_fd, &sbuf) < 0) ! 719: { ! 720: fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]); ! 721: perror (NULL); ! 722: exit (-1); ! 723: } ! 724: inf_size = sbuf.st_size; ! 725: inf_buffer = (char*) xmalloc (inf_size + 2); ! 726: inf_buffer[inf_size] = '\n'; ! 727: inf_buffer[inf_size + 1] = '\0'; ! 728: inf_limit = inf_buffer + inf_size; ! 729: inf_ptr = inf_buffer; ! 730: ! 731: to_read = inf_size; ! 732: while (to_read > 0) ! 733: { ! 734: long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read); ! 735: if (i < 0) ! 736: { ! 737: fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]); ! 738: perror (NULL); ! 739: exit (-1); ! 740: } ! 741: if (i == 0) ! 742: { ! 743: inf_size -= to_read; ! 744: break; ! 745: } ! 746: to_read -= i; ! 747: } ! 748: ! 749: close (inf_fd); ! 750: ! 751: /* If file doesn't end with '\n', add one. */ ! 752: if (inf_limit > inf_buffer && inf_limit[-1] != '\n') ! 753: inf_limit++; ! 754: ! 755: unlink (argv[3]); ! 756: outf = fopen (argv[3], "w"); ! 757: if (outf == NULL) ! 758: { ! 759: fprintf (stderr, "%s: Cannot open '%s' for writing -", ! 760: progname, argv[3]); ! 761: perror (NULL); ! 762: exit (-1); ! 763: } ! 764: ! 765: lineno = 1; ! 766: ! 767: if (check_protection (&ifndef_line, &endif_line)) ! 768: { ! 769: #if 0 ! 770: fprintf (stderr, "#ifndef %s on line %d; #endif on line %d\n", ! 771: protect_name, ifndef_line, endif_line); ! 772: #endif ! 773: lbrac_line = ifndef_line+1; ! 774: rbrac_line = endif_line; ! 775: } ! 776: else ! 777: { ! 778: lbrac_line = 1; ! 779: rbrac_line = -1; ! 780: } ! 781: ! 782: /* Reset input file. */ ! 783: inf_ptr = inf_buffer; ! 784: lineno = 1; ! 785: ! 786: for (;;) ! 787: { ! 788: if (lineno == lbrac_line) ! 789: write_lbrac (); ! 790: if (lineno == rbrac_line) ! 791: write_rbrac (); ! 792: for (;;) ! 793: { ! 794: struct fn_decl *fn; ! 795: c = INF_GET (); ! 796: if (c == EOF) ! 797: break; ! 798: if (isalpha (c) || c == '_') ! 799: { ! 800: struct partial_proto *partial; ! 801: c = inf_scan_ident (&buf, c); ! 802: INF_UNGET (c); ! 803: fputs (buf.base, outf); ! 804: fn = lookup_std_proto (buf.base); ! 805: /* We only want to edit the declaration matching the one ! 806: seen by scan-decls, as there can be multiple ! 807: declarations, selected by #ifdef __STDC__ or whatever. */ ! 808: if (fn && fn->partial && fn->partial->line_seen == lineno) ! 809: { ! 810: c = inf_skip_spaces (' '); ! 811: if (c == EOF) ! 812: break; ! 813: if (c == '(') ! 814: { ! 815: c = inf_skip_spaces (' '); ! 816: if (c == ')') ! 817: { ! 818: fprintf (outf, " _PARAMS((%s))", fn->params); ! 819: } ! 820: else ! 821: { ! 822: putc ('(', outf); ! 823: INF_UNGET (c); ! 824: } ! 825: } ! 826: else ! 827: fprintf (outf, " %c", c); ! 828: } ! 829: } ! 830: else ! 831: { ! 832: putc (c, outf); ! 833: if (c == '\n') ! 834: break; ! 835: } ! 836: } ! 837: if (c == EOF) ! 838: break; ! 839: lineno++; ! 840: } ! 841: if (rbrac_line < 0) ! 842: write_rbrac (); ! 843: ! 844: fclose (outf); ! 845: ! 846: return 0; ! 847: } ! 848: ! 849:
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