4.3BSD - /usr/src/ucb/dbx/makedefs.c

   1: /*
   2:  * Copyright (c) 1983 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #ifndef lint
   8: char copyright[] =
   9: "@(#) Copyright (c) 1983 Regents of the University of California.\n\
  10:  All rights reserved.\n";
  11: #endif not lint
  12: 
  13: #ifndef lint
  14: static char sccsid[] = "@(#)makedefs.c	5.1 (Berkeley) 5/31/85";
  15: #endif not lint
  16: 
  17: static char rcsid[] = "$Header: makedefs.c,v 1.4 84/12/26 10:40:22 linton Exp $";
  18: 
  19: /*
  20:  * Create a definitions file (e.g. .h) from an implementation file (e.g. .c).
  21:  *
  22:  * Usage is "makedefs source.c source.h" where source.h is to be created.
  23:  *
  24:  * Lines beginning with "public" or within a "#ifndef public ... #endif"
  25:  * block are copied to the new file.  Initializations (e.g. "int x = 3") are
  26:  * omitted ("int x;" is output).
  27:  *
  28:  * Normally a temporary definitions file is created and compared to
  29:  * the given destination.  If they are different, the temporary file
  30:  * is copied on top of the destination.  This is so that dependencies
  31:  * when using "make" are not triggered.
  32:  *
  33:  * The "-f" option overrides this and forces the destination file to be created.
  34:  */
  35: 
  36: #include "defs.h"
  37: #include <signal.h>
  38: 
  39: #define procedure void
  40: 
  41: Boolean force;
  42: Boolean copytext;
  43: 
  44: String tmpname;
  45: String modulename();
  46: procedure abnorm();
  47: 
  48: main(argc, argv)
  49: int argc;
  50: String argv[];
  51: {
  52:     extern String mktemp();
  53:     String name;
  54:     File tmp;
  55:     Integer r;
  56:     Integer index;
  57: 
  58:     if (streq(argv[1], "-f")) {
  59:     force = true;
  60:     index = 2;
  61:     } else {
  62:     force = false;
  63:     index = 1;
  64:     }
  65:     if (argc - index > 2) {
  66:     fatal("usage: makedefs [ -f ] file.c [ file.h ]\n");
  67:     }
  68:     tmp = nil;
  69:     if (freopen(argv[index], "r", stdin) == NULL) {
  70:     fatal("can't read %s", argv[index]);
  71:     }
  72:     signal(SIGINT, abnorm);
  73:     signal(SIGQUIT, abnorm);
  74:     if (index + 1 < argc) {
  75:     if (force) {
  76:         tmpname = argv[index + 1];
  77:     } else {
  78:         tmpname = mktemp("/tmp/makedefsXXXXXX");
  79:     }
  80:     tmp = freopen(tmpname, "w", stdout);
  81:     if (tmp == nil) {
  82:         fatal("can't write %s", tmpname);
  83:     }
  84:     }
  85:     copytext = false;
  86:     name = modulename(argv[index]);
  87:     printf("#ifndef %s\n", name);
  88:     printf("#define %s\n", name);
  89:     copy();
  90:     printf("#endif\n");
  91:     if (tmp != NULL and not force) {
  92:     fclose(tmp);
  93:     r = call("cmp", stdin, stderr, "-s", tmpname, argv[2], nil);
  94:     if (r != 0) {
  95:         r = call("cp", stdin, stderr, tmpname, argv[2], nil);
  96:         if (r != 0) {
  97:         fprintf(stderr, "can't create %s\n", argv[2]);
  98:         }
  99:     }
 100:     unlink(tmpname);
 101:     }
 102:     quit(0);
 103: }
 104: 
 105: String modulename(s)
 106: String s;
 107: {
 108:     String r, i, j;
 109:     static char buf[256];
 110: 
 111:     strcpy(buf, s);
 112:     i = rindex(buf, '/');
 113:     if (i == nil) {
 114:     i = buf;
 115:     }
 116:     for (j = i; *j != '.'; j++);
 117:     *j++ = '_';
 118:     *j++ = 'h';
 119:     *j = '\0';
 120:     return buf;
 121: }
 122: 
 123: copy()
 124: {
 125:     register char *p;
 126:     char line[1024];
 127: 
 128:     while (gets(line) != NULL) {
 129:     if (strncmp(line, "#ifndef public", 14) == 0) {
 130:         copytext = true;
 131:     } else if (strncmp(line, "#endif", 6) == 0) {
 132:         copytext = false;
 133:     } else if (strncmp(line, "public", 6) == 0) {
 134:         copydef(line);
 135:     } else if (copytext) {
 136:         printf("%s\n", line);
 137:     }
 138:     }
 139: }
 140: 
 141: copydef(s)
 142: String s;
 143: {
 144:     register char *p;
 145:     register Boolean isproc;
 146: 
 147:     isproc = false;
 148:     for (p = &s[7]; *p != '\0' and *p != '='; p++) {
 149:     if (*p == '(') {
 150:         isproc = true;
 151:         printf("(/* ");
 152:     } else if (*p == ')' and isproc and *(p+1) == '\0') {
 153:         printf(" */)");
 154:     } else {
 155:         putchar(*p);
 156:     }
 157:     }
 158:     if (isproc or *p == '=') {
 159:     putchar(';');
 160:     }
 161:     putchar('\n');
 162: }
 163: 
 164: /*
 165:  * Terminate program.
 166:  */
 167: 
 168: procedure abnorm(signo)
 169: int signo;
 170: {
 171:     unlink(tmpname);
 172:     quit(signo);
 173: }
 174: 
 175: quit(r)
 176: int r;
 177: {
 178:     exit(r);
 179: }
 180: 
 181: /*
 182:  * No special error recovery strategy.
 183:  */
 184: 
 185: erecover()
 186: {
 187: }

Defined functions

Defined variables

Defined macros