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1.1 root 1: /* fix-header.c - Make C header file suitable for C++. 1.1.1.2 ! root 2: Copyright (C) 1993, 1994 Free Software Foundation, Inc. 1.1 root 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: 1.1.1.2 ! root 85: extern sstring buf; ! 86: 1.1 root 87: int verbose = 0; 88: int partial_count = 0; 1.1.1.2 ! root 89: #if 0 ! 90: /* All uses of this are ifdefed out. This is no longer needed, because ! 91: cccp.c implicitly forces the standard include files to be treated as C. ! 92: Adding an explicit extern "C" is undesireable as it breaks the SunOS 4.x ! 93: sun4c/romvec.h file. */ 1.1 root 94: int missing_extern_C_count = 0; 1.1.1.2 ! root 95: #endif 1.1 root 96: int missing_errno = 0; 97: 98: #include "xsys-protos.h" 99: 100: char *inf_buffer; 101: char *inf_limit; 102: char *inf_ptr; 103: 104: /* Certain standard files get extra treatment */ 105: 106: enum special_file 107: { 108: no_special, 109: errno_special, 110: sys_stat_special 111: }; 112: 113: enum special_file special_file_handling = no_special; 114: 115: /* The following are only used when handling sys/stat.h */ 116: /* They are set if the corresponding macro has been seen. */ 117: int seen_S_IFBLK = 0, seen_S_ISBLK = 0; 118: int seen_S_IFCHR = 0, seen_S_ISCHR = 0; 119: int seen_S_IFDIR = 0, seen_S_ISDIR = 0; 120: int seen_S_IFIFO = 0, seen_S_ISFIFO = 0; 121: int seen_S_IFLNK = 0, seen_S_ISLNK = 0; 122: int seen_S_IFREG = 0, seen_S_ISREG = 0; 123: 124: /* Wrapper around free, to avoid prototype clashes. */ 125: 126: void 127: xfree (ptr) 128: char *ptr; 129: { 130: free (ptr); 131: } 132: 133: /* Avoid error if config defines abort as fancy_abort. 134: It's not worth "really" implementing this because ordinary 135: compiler users never run fix-header. */ 136: 137: void 138: fancy_abort () 139: { 140: abort (); 141: } 142: 143: #define obstack_chunk_alloc xmalloc 144: #define obstack_chunk_free xfree 145: struct obstack scan_file_obstack; 146: 147: /* NOTE: If you edit this, also edit gen-protos.c !! */ 148: struct fn_decl * 149: lookup_std_proto (name) 150: char *name; 151: { 152: int i = hash (name) % HASH_SIZE; 153: int i0 = i; 154: for (;;) 155: { 156: struct fn_decl *fn; 157: if (hash_tab[i] == 0) 158: return NULL; 159: fn = &std_protos[hash_tab[i]]; 160: if (strcmp (fn->fname, name) == 0) 161: return fn; 162: i = (i+1) % HASH_SIZE; 163: if (i == i0) 164: abort (); 165: } 166: } 167: 168: char *inc_filename; 169: int inc_filename_length; 170: char *progname = "fix-header"; 171: FILE *outf; 172: sstring line; 173: 174: int lbrac_line, rbrac_line; 175: 176: char **required_functions; 177: int required_unseen_count; 178: 1.1.1.2 ! root 179: void 1.1 root 180: write_lbrac () 181: { 182: 1.1.1.2 ! root 183: #if 0 1.1 root 184: if (missing_extern_C_count + required_unseen_count > 0) 185: fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n"); 1.1.1.2 ! root 186: #endif 1.1 root 187: 188: if (partial_count) 189: { 190: fprintf (outf, "#ifndef _PARAMS\n"); 191: fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n"); 192: fprintf (outf, "#define _PARAMS(ARGS) ARGS\n"); 193: fprintf (outf, "#else\n"); 194: fprintf (outf, "#define _PARAMS(ARGS) ()\n"); 195: fprintf (outf, "#endif\n#endif /* _PARAMS */\n"); 196: } 197: } 198: 199: struct partial_proto 200: { 201: struct partial_proto *next; 202: char *fname; /* name of function */ 203: char *rtype; /* return type */ 204: struct fn_decl *fn; 205: int line_seen; 206: }; 207: 208: struct partial_proto *partial_proto_list = NULL; 209: 210: struct partial_proto required_dummy_proto; 211: #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto) 212: #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto) 213: #define CLEAR_REQUIRED(FN) ((FN)->partial = 0) 214: 215: void 216: recognized_macro (fname) 217: char *fname; 218: { 219: /* The original include file defines fname as a macro. */ 220: struct fn_decl *fn = lookup_std_proto (fname); 221: 222: /* Since fname is a macro, don't require a prototype for it. */ 223: if (fn && REQUIRED (fn)) 224: { 225: CLEAR_REQUIRED (fn); 226: required_unseen_count--; 227: } 228: 229: switch (special_file_handling) 230: { 231: case errno_special: 232: if (strcmp (fname, "errno") == 0) missing_errno = 0; 233: break; 234: case sys_stat_special: 235: if (fname[0] == 'S' && fname[1] == '_') 236: { 237: if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++; 238: else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++; 239: else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++; 240: else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++; 241: else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++; 242: else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++; 243: else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++; 244: else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++; 245: else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++; 246: else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++; 247: else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++; 248: else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++; 249: } 250: } 251: } 252: 253: void 254: recognized_extern (name, type) 255: char *name; 256: char *type; 257: { 258: switch (special_file_handling) 259: { 260: case errno_special: 261: if (strcmp (name, "errno") == 0) missing_errno = 0; 262: break; 263: } 264: } 265: 266: /* Called by scan_decls if it saw a function definition for a function 267: named FNAME, with return type RTYPE, and argument list ARGS, 268: in source file FILE_SEEN on line LINE_SEEN. 269: KIND is 'I' for an inline function; 270: 'F' if a normal function declaration preceded by 'extern "C"' 271: (or nested inside 'extern "C"' braces); or 272: 'f' for other function declarations. */ 273: 274: void 275: recognized_function (fname, kind, rtype, args, file_seen, line_seen) 276: char *fname; 277: int kind; /* One of 'f' 'F' or 'I' */ 278: char *rtype; 279: char *args; 280: char *file_seen; 281: int line_seen; 282: { 283: struct partial_proto *partial; 284: int i; 285: struct fn_decl *fn; 1.1.1.2 ! root 286: #if 0 1.1 root 287: if (kind == 'f') 288: missing_extern_C_count++; 1.1.1.2 ! root 289: #endif 1.1 root 290: 291: fn = lookup_std_proto (fname); 292: 293: /* Remove the function from the list of required function. */ 294: if (fn && REQUIRED (fn)) 295: { 296: CLEAR_REQUIRED (fn); 297: required_unseen_count--; 298: } 299: 300: /* If we have a full prototype, we're done. */ 301: if (args[0] != '\0') 302: return; 303: 304: if (kind == 'I') /* don't edit inline function */ 305: return; 306: 307: /* If the partial prototype was included from some other file, 308: we don't need to patch it up (in this run). */ 309: i = strlen (file_seen); 310: if (i < inc_filename_length 311: || strcmp (inc_filename, file_seen + (i - inc_filename_length)) != 0) 312: return; 313: 314: if (fn == NULL) 315: return; 316: if (fn->params[0] == '\0' || strcmp (fn->params, "void") == 0) 317: return; 318: 319: /* We only have a partial function declaration, 320: so remember that we have to add a complete prototype. */ 321: partial_count++; 322: partial = (struct partial_proto*) 323: obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto)); 324: partial->fname = obstack_alloc (&scan_file_obstack, strlen (fname) + 1); 325: strcpy (partial->fname, fname); 326: partial->rtype = obstack_alloc (&scan_file_obstack, strlen (rtype) + 1); 327: strcpy (partial->rtype, rtype); 328: partial->line_seen = line_seen; 329: partial->fn = fn; 330: fn->partial = partial; 331: partial->next = partial_proto_list; 332: partial_proto_list = partial; 333: if (verbose) 334: { 335: fprintf (stderr, "(%s: %s non-prototype function declaration.)\n", 336: inc_filename, fname); 337: } 338: } 339: 340: void 341: read_scan_file (scan_file) 342: FILE *scan_file; 343: { 344: obstack_init (&scan_file_obstack); 345: 346: scan_decls (scan_file); 347: 1.1.1.2 ! root 348: if (required_unseen_count + partial_count + missing_errno ! 349: #if 0 ! 350: + missing_extern_C_count ! 351: #endif ! 352: == 0) 1.1 root 353: { 354: if (verbose) 355: fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename); 356: exit (0); 357: } 358: if (!verbose) 359: fprintf (stderr, "%s: fixing %s\n", progname, inc_filename); 360: else 361: { 362: if (required_unseen_count) 363: fprintf (stderr, "%s: %d missing function declarations.\n", 364: inc_filename, required_unseen_count); 365: if (partial_count) 366: fprintf (stderr, "%s: %d non-prototype function declarations.\n", 367: inc_filename, partial_count); 1.1.1.2 ! root 368: #if 0 1.1 root 369: if (missing_extern_C_count) 370: fprintf (stderr, 371: "%s: %d declarations not protected by extern \"C\".\n", 372: inc_filename, missing_extern_C_count); 1.1.1.2 ! root 373: #endif 1.1 root 374: } 375: } 376: 1.1.1.2 ! root 377: void 1.1 root 378: write_rbrac () 379: { 380: struct fn_decl *fn; 381: char **rptr; 382: 383: if (required_unseen_count) 1.1.1.2 ! root 384: { ! 385: fprintf (outf, ! 386: "#if defined(__cplusplus) || defined(__USE_FIXED_PROTOTYPES__)\n"); ! 387: #ifdef NO_IMPLICIT_EXTERN_C ! 388: fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n"); ! 389: #endif ! 390: } 1.1 root 391: 392: /* Now we print out prototypes for those functions that we haven't seen. */ 393: for (rptr = required_functions; *rptr; rptr++) 394: { 395: int macro_protect = 0; 396: 397: fn = lookup_std_proto (*rptr); 398: if (fn == NULL || !REQUIRED (fn)) 399: continue; 400: 401: /* In the case of memmove, protect in case the application 402: defines it as a macro before including the header. */ 403: if (!strcmp (fn->fname, "memmove") 404: || !strcmp (fn->fname, "vprintf") 405: || !strcmp (fn->fname, "vfprintf") 406: || !strcmp (fn->fname, "vsprintf") 407: || !strcmp (fn->fname, "rewinddir")) 408: macro_protect = 1; 409: 410: if (macro_protect) 411: fprintf (outf, "#ifndef %s\n", fn->fname); 412: fprintf (outf, "extern %s %s (%s);\n", 413: fn->rtype, fn->fname, fn->params); 414: if (macro_protect) 415: fprintf (outf, "#endif\n"); 416: } 417: if (required_unseen_count) 1.1.1.2 ! root 418: { ! 419: #ifdef NO_IMPLICIT_EXTERN_C ! 420: fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n"); ! 421: #endif ! 422: fprintf (outf, ! 423: "#endif /* defined(__cplusplus) || defined(__USE_FIXED_PROTOTYPES__*/\n"); ! 424: } 1.1 root 425: 426: switch (special_file_handling) 427: { 428: case errno_special: 429: if (missing_errno) 430: fprintf (outf, "extern int errno;\n"); 431: break; 432: case sys_stat_special: 433: if (!seen_S_ISBLK && seen_S_IFBLK) 434: fprintf (outf, 435: "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n"); 436: if (!seen_S_ISCHR && seen_S_IFCHR) 437: fprintf (outf, 438: "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n"); 439: if (!seen_S_ISDIR && seen_S_IFDIR) 440: fprintf (outf, 441: "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n"); 442: if (!seen_S_ISFIFO && seen_S_IFIFO) 443: fprintf (outf, 444: "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n"); 445: if (!seen_S_ISLNK && seen_S_IFLNK) 446: fprintf (outf, 447: "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n"); 448: if (!seen_S_ISREG && seen_S_IFREG) 449: fprintf (outf, 450: "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n"); 451: break; 452: } 453: 454: 1.1.1.2 ! root 455: #if 0 1.1 root 456: if (missing_extern_C_count + required_unseen_count > 0) 457: fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n"); 1.1.1.2 ! root 458: #endif 1.1 root 459: } 460: 461: char * 1.1.1.2 ! root 462: xstrdup (str) 1.1 root 463: char *str; 464: { 465: char *copy = (char *) xmalloc (strlen (str) + 1); 466: strcpy (copy, str); 467: return copy; 468: } 469: 470: /* Returns 1 iff the file is properly protected from multiple inclusion: 471: #ifndef PROTECT_NAME 472: #define PROTECT_NAME 473: #endif 474: 475: */ 476: 477: #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char*)inf_ptr++ : EOF) 478: #define INF_UNGET(c) ((c)!=EOF && inf_ptr--) 479: 480: int 481: inf_skip_spaces (c) 482: int c; 483: { 484: for (;;) 485: { 486: if (c == ' ' || c == '\t') 487: c = INF_GET (); 488: else if (c == '/') 489: { 490: c = INF_GET (); 491: if (c != '*') 492: { 493: INF_UNGET (c); 494: return '/'; 495: } 496: c = INF_GET (); 497: for (;;) 498: { 499: if (c == EOF) 500: return EOF; 501: else if (c != '*') 502: { 503: if (c == '\n') 504: source_lineno++, lineno++; 505: c = INF_GET (); 506: } 507: else if ((c = INF_GET ()) == '/') 508: return INF_GET (); 509: } 510: } 511: else 512: break; 513: } 514: return c; 515: } 516: 517: /* Read into STR from inf_buffer upto DELIM. */ 518: 519: int 520: inf_read_upto (str, delim) 521: sstring *str; 522: int delim; 523: { 524: int ch; 525: for (;;) 526: { 527: ch = INF_GET (); 528: if (ch == EOF || ch == delim) 529: break; 530: SSTRING_PUT (str, ch); 531: } 532: MAKE_SSTRING_SPACE (str, 1); 533: *str->ptr = 0; 534: return ch; 535: } 536: 537: int 538: inf_scan_ident (s, c) 539: register sstring *s; 540: int c; 541: { 542: s->ptr = s->base; 543: if (isalpha (c) || c == '_') 544: { 545: for (;;) 546: { 547: SSTRING_PUT (s, c); 548: c = INF_GET (); 549: if (c == EOF || !(isalnum (c) || c == '_')) 550: break; 551: } 552: } 553: MAKE_SSTRING_SPACE (s, 1); 554: *s->ptr = 0; 555: return c; 556: } 557: 558: /* Returns 1 if the file is correctly protected against multiple 559: inclusion, setting *ifndef_line to the line number of the initial #ifndef 560: and setting *endif_line to the final #endif. 561: Otherwise return 0. */ 562: 563: int 564: check_protection (ifndef_line, endif_line) 565: int *ifndef_line, *endif_line; 566: { 567: int c; 568: int if_nesting = 1; /* Level of nesting of #if's */ 569: char *protect_name = NULL; /* Identifier following initial #ifndef */ 570: int define_seen = 0; 571: 572: /* Skip initial white space (including comments). */ 573: for (;; lineno++) 574: { 575: c = inf_skip_spaces (' '); 576: if (c == EOF) 577: return 0; 578: if (c != '\n') 579: break; 580: } 581: if (c != '#') 582: return 0; 583: c = inf_scan_ident (&buf, inf_skip_spaces (' ')); 584: if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0) 585: return 0; 586: 587: /* So far so good: We've seen an initial #ifndef. */ 588: *ifndef_line = lineno; 589: c = inf_scan_ident (&buf, inf_skip_spaces (c)); 590: if (SSTRING_LENGTH (&buf) == 0 || c == EOF) 591: return 0; 1.1.1.2 ! root 592: protect_name = xstrdup (buf.base); 1.1 root 593: 594: INF_UNGET (c); 595: c = inf_read_upto (&buf, '\n'); 596: if (c == EOF) 597: return 0; 598: lineno++; 599: 600: for (;;) 601: { 602: c = inf_skip_spaces (' '); 603: if (c == EOF) 604: return 0; 605: if (c == '\n') 606: { 607: lineno++; 608: continue; 609: } 610: if (c != '#') 611: goto skip_to_eol; 612: c = inf_scan_ident (&buf, inf_skip_spaces (' ')); 613: if (SSTRING_LENGTH (&buf) == 0) 614: ; 615: else if (!strcmp (buf.base, "ifndef") 616: || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if")) 617: { 618: if_nesting++; 619: } 620: else if (!strcmp (buf.base, "endif")) 621: { 622: if_nesting--; 623: if (if_nesting == 0) 624: break; 625: } 626: else if (!strcmp (buf.base, "else")) 627: { 628: if (if_nesting == 1) 629: return 0; 630: } 631: else if (!strcmp (buf.base, "define")) 632: { 633: if (if_nesting != 1) 634: goto skip_to_eol; 635: c = inf_skip_spaces (c); 636: c = inf_scan_ident (&buf, c); 637: if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0) 638: define_seen = 1; 639: } 640: skip_to_eol: 641: for (;;) 642: { 643: if (c == '\n' || c == EOF) 644: break; 645: c = INF_GET (); 646: } 647: if (c == EOF) 648: return 0; 649: lineno++; 650: } 651: 652: if (!define_seen) 653: return 0; 654: *endif_line = lineno; 655: /* Skip final white space (including comments). */ 656: for (;;) 657: { 658: c = inf_skip_spaces (' '); 659: if (c == EOF) 660: break; 661: if (c != '\n') 662: return 0; 663: } 664: 665: return 1; 666: } 667: 668: int 669: main (argc, argv) 670: int argc; 671: char **argv; 672: { 673: int inf_fd; 674: struct stat sbuf; 675: int c; 676: int i, done; 677: char *cptr, *cptr0, **pptr; 678: int ifndef_line; 679: int endif_line; 680: long to_read; 681: long int inf_size; 682: 683: if (argv[0] && argv[0][0]) 684: { 685: register char *p; 686: 687: progname = 0; 688: for (p = argv[0]; *p; p++) 689: if (*p == '/') 690: progname = p; 691: progname = progname ? progname+1 : argv[0]; 692: } 693: 694: if (argc < 4) 695: { 696: fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h req_funcs <scan-file-name\n", 697: progname); 698: exit (-1); 699: } 700: 701: inc_filename = argv[1]; 702: inc_filename_length = strlen (inc_filename); 703: if (strcmp (inc_filename, "sys/stat.h") == 0) 704: special_file_handling = sys_stat_special; 705: else if (strcmp (inc_filename, "errno.h") == 0) 706: special_file_handling = errno_special, missing_errno = 1; 707: 708: /* Calculate an upper bound of the number of function names in argv[4] */ 709: for (i = 1, cptr = argv[4]; *cptr; cptr++) 710: if (*cptr == ' ') i++; 711: /* Find the list of prototypes required for this include file. */ 712: required_functions = (char**)xmalloc ((i+1) * sizeof (char*)); 713: for (cptr = argv[4], cptr0 = cptr, pptr = required_functions, done = 0; 714: !done; cptr++) 715: { 716: done = *cptr == '\0'; 717: if (*cptr == ' ' || done) 718: { 719: *cptr = '\0'; 720: if (cptr > cptr0) 721: { 722: struct fn_decl *fn = lookup_std_proto (cptr0); 723: *pptr++ = cptr0; 724: if (fn == NULL) 725: fprintf (stderr, "Internal error: No prototype for %s\n", 726: cptr0); 727: else 728: SET_REQUIRED (fn); 729: } 730: cptr0 = cptr + 1; 731: } 732: } 733: required_unseen_count = pptr - required_functions; 734: *pptr = 0; 735: 736: read_scan_file (stdin); 737: 738: inf_fd = open (argv[2], O_RDONLY, 0666); 739: if (inf_fd < 0) 740: { 741: fprintf (stderr, "%s: Cannot open '%s' for reading -", 742: progname, argv[2]); 743: perror (NULL); 744: exit (-1); 745: } 746: if (fstat (inf_fd, &sbuf) < 0) 747: { 748: fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]); 749: perror (NULL); 750: exit (-1); 751: } 752: inf_size = sbuf.st_size; 753: inf_buffer = (char*) xmalloc (inf_size + 2); 754: inf_buffer[inf_size] = '\n'; 755: inf_buffer[inf_size + 1] = '\0'; 756: inf_limit = inf_buffer + inf_size; 757: inf_ptr = inf_buffer; 758: 759: to_read = inf_size; 760: while (to_read > 0) 761: { 762: long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read); 763: if (i < 0) 764: { 765: fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]); 766: perror (NULL); 767: exit (-1); 768: } 769: if (i == 0) 770: { 771: inf_size -= to_read; 772: break; 773: } 774: to_read -= i; 775: } 776: 777: close (inf_fd); 778: 779: /* If file doesn't end with '\n', add one. */ 780: if (inf_limit > inf_buffer && inf_limit[-1] != '\n') 781: inf_limit++; 782: 783: unlink (argv[3]); 784: outf = fopen (argv[3], "w"); 785: if (outf == NULL) 786: { 787: fprintf (stderr, "%s: Cannot open '%s' for writing -", 788: progname, argv[3]); 789: perror (NULL); 790: exit (-1); 791: } 792: 793: lineno = 1; 794: 795: if (check_protection (&ifndef_line, &endif_line)) 796: { 797: #if 0 798: fprintf (stderr, "#ifndef %s on line %d; #endif on line %d\n", 799: protect_name, ifndef_line, endif_line); 800: #endif 801: lbrac_line = ifndef_line+1; 802: rbrac_line = endif_line; 803: } 804: else 805: { 806: lbrac_line = 1; 807: rbrac_line = -1; 808: } 809: 810: /* Reset input file. */ 811: inf_ptr = inf_buffer; 812: lineno = 1; 813: 814: for (;;) 815: { 816: if (lineno == lbrac_line) 817: write_lbrac (); 818: if (lineno == rbrac_line) 819: write_rbrac (); 820: for (;;) 821: { 822: struct fn_decl *fn; 823: c = INF_GET (); 824: if (c == EOF) 825: break; 826: if (isalpha (c) || c == '_') 827: { 828: c = inf_scan_ident (&buf, c); 829: INF_UNGET (c); 830: fputs (buf.base, outf); 831: fn = lookup_std_proto (buf.base); 832: /* We only want to edit the declaration matching the one 833: seen by scan-decls, as there can be multiple 834: declarations, selected by #ifdef __STDC__ or whatever. */ 835: if (fn && fn->partial && fn->partial->line_seen == lineno) 836: { 837: c = inf_skip_spaces (' '); 838: if (c == EOF) 839: break; 840: if (c == '(') 841: { 842: c = inf_skip_spaces (' '); 843: if (c == ')') 844: { 845: fprintf (outf, " _PARAMS((%s))", fn->params); 846: } 847: else 848: { 849: putc ('(', outf); 850: INF_UNGET (c); 851: } 852: } 853: else 854: fprintf (outf, " %c", c); 855: } 856: } 857: else 858: { 859: putc (c, outf); 860: if (c == '\n') 861: break; 862: } 863: } 864: if (c == EOF) 865: break; 866: lineno++; 867: } 868: if (rbrac_line < 0) 869: write_rbrac (); 870: 871: fclose (outf); 872: 873: return 0; 874: }
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