include/bits.c

   1 /*
   2  * Copyright (c) 1997-2002 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 RCSID("$Id$");
  37 #endif
  38 #include <stdio.h>
  39 #include <string.h>
  40 #include <stdlib.h>
  41 #include <ctype.h>
  42 #ifdef WIN32
  43 #include <ws2tcpip.h>
  44 #endif
  45
  46 #define BITSIZE(TYPE)                                           \
  47 {                                                               \
  48     int b = 0; TYPE x = 1, zero = 0; const char *pre = "u";     \
  49     char tmp[128], tmp2[128];                                   \
  50     while(x){ x <<= 1; b++; if(x < zero) pre=""; }              \
  51     if(b >= len){                                               \
  52         int tabs;                                               \
  53         sprintf(tmp, "%sint%d_t" , pre, len);                   \
  54         sprintf(tmp2, "typedef %s %s;", #TYPE, tmp);            \
  55         tabs = 5 - strlen(tmp2) / 8;                            \
  56         fprintf(f, "%s", tmp2);                                 \
  57         while(tabs-- > 0) fprintf(f, "\t");                     \
  58         fprintf(f, "/* %2d bits */\n", b);                      \
  59         return;                                                 \
  60     }                                                           \
  61 }
  62
  63 #ifndef HAVE___ATTRIBUTE__
  64 #define __attribute__(x)
  65 #endif
  66
  67 static void
  68 try_signed(FILE *f, int len)  __attribute__ ((unused));
  69
  70 static void
  71 try_unsigned(FILE *f, int len) __attribute__ ((unused));
  72
  73 static int
  74 print_bt(FILE *f, int flag) __attribute__ ((unused));
  75
  76 static void
  77 try_signed(FILE *f, int len)
  78 {
  79     BITSIZE(signed char);
  80     BITSIZE(short);
  81     BITSIZE(int);
  82     BITSIZE(long);
  83 #ifdef HAVE_LONG_LONG
  84     BITSIZE(long long);
  85 #endif
  86     fprintf(f, "/* There is no %d bit type */\n", len);
  87 }
  88
  89 static void
  90 try_unsigned(FILE *f, int len)
  91 {
  92     BITSIZE(unsigned char);
  93     BITSIZE(unsigned short);
  94     BITSIZE(unsigned int);
  95     BITSIZE(unsigned long);
  96 #ifdef HAVE_LONG_LONG
  97     BITSIZE(unsigned long long);
  98 #endif
  99     fprintf(f, "/* There is no %d bit type */\n", len);
 100 }
 101
 102 static int
 103 print_bt(FILE *f, int flag)
 104 {
 105     if(flag == 0){
 106         fprintf(f, "/* For compatibility with various type definitions */\n");
 107         fprintf(f, "#ifndef __BIT_TYPES_DEFINED__\n");
 108         fprintf(f, "#define __BIT_TYPES_DEFINED__\n");
 109         fprintf(f, "\n");
 110     }
 111     return 1;
 112 }
 113
 114 int main(int argc, char **argv)
 115 {
 116     FILE *f;
 117     int flag;
 118     const char *fn, *hb;
 119
 120     if (argc > 1 && strcmp(argv[1], "--version") == 0) {
 121         printf("some version");
 122         return 0;
 123     }
 124
 125     if(argc < 2){
 126         fn = "bits.h";
 127         hb = "__BITS_H__";
 128         f = stdout;
 129     } else {
 130         char *p;
 131         fn = argv[1];
 132         p = malloc(strlen(fn) + 5);
 133         sprintf(p, "__%s__", fn);
 134         hb = p;
 135         for(; *p; p++){
 136             if(!isalnum((unsigned char)*p))
 137                 *p = '_';
 138         }
 139         f = fopen(argv[1], "w");
 140     }
 141     fprintf(f, "/* %s -- this file was generated for %s by\n", fn, HOST);
 142     fprintf(f, "   %*s    %s */\n\n", (int)strlen(fn), "",
 143             "$Id$");
 144     fprintf(f, "#ifndef %s\n", hb);
 145     fprintf(f, "#define %s\n", hb);
 146     fprintf(f, "\n");
 147 #ifdef HAVE_INTTYPES_H
 148     fprintf(f, "#include <inttypes.h>\n");
 149 #endif
 150 #ifdef HAVE_SYS_TYPES_H
 151     fprintf(f, "#include <sys/types.h>\n");
 152 #endif
 153 #ifdef HAVE_SYS_BITYPES_H
 154     fprintf(f, "#include <sys/bitypes.h>\n");
 155 #endif
 156 #ifdef HAVE_BIND_BITYPES_H
 157     fprintf(f, "#include <bind/bitypes.h>\n");
 158 #endif
 159 #ifdef HAVE_NETINET_IN6_MACHTYPES_H
 160     fprintf(f, "#include <netinet/in6_machtypes.h>\n");
 161 #endif
 162 #ifdef HAVE_SOCKLEN_T
 163 #ifndef WIN32
 164     fprintf(f, "#include <sys/socket.h>\n");
 165 #else
 166     fprintf(f, "#include <ws2tcpip.h>\n");
 167 #endif
 168 #endif
 169     fprintf(f, "\n");
 170
 171     flag = 0;
 172 #ifndef HAVE_INT8_T
 173     flag = print_bt(f, flag);
 174     try_signed (f, 8);
 175 #endif /* HAVE_INT8_T */
 176 #ifndef HAVE_INT16_T
 177     flag = print_bt(f, flag);
 178     try_signed (f, 16);
 179 #endif /* HAVE_INT16_T */
 180 #ifndef HAVE_INT32_T
 181     flag = print_bt(f, flag);
 182     try_signed (f, 32);
 183 #endif /* HAVE_INT32_T */
 184 #ifndef HAVE_INT64_T
 185     flag = print_bt(f, flag);
 186     try_signed (f, 64);
 187 #endif /* HAVE_INT64_T */
 188
 189 #ifndef HAVE_UINT8_T
 190     flag = print_bt(f, flag);
 191     try_unsigned (f, 8);
 192 #endif /* HAVE_UINT8_T */
 193 #ifndef HAVE_UINT16_T
 194     flag = print_bt(f, flag);
 195     try_unsigned (f, 16);
 196 #endif /* HAVE_UINT16_T */
 197 #ifndef HAVE_UINT32_T
 198     flag = print_bt(f, flag);
 199     try_unsigned (f, 32);
 200 #endif /* HAVE_UINT32_T */
 201 #ifndef HAVE_UINT64_T
 202     flag = print_bt(f, flag);
 203     try_unsigned (f, 64);
 204 #endif /* HAVE_UINT64_T */
 205
 206 #define X(S) fprintf(f, "typedef uint" #S "_t u_int" #S "_t;\n")
 207 #ifndef HAVE_U_INT8_T
 208     flag = print_bt(f, flag);
 209     X(8);
 210 #endif /* HAVE_U_INT8_T */
 211 #ifndef HAVE_U_INT16_T
 212     flag = print_bt(f, flag);
 213     X(16);
 214 #endif /* HAVE_U_INT16_T */
 215 #ifndef HAVE_U_INT32_T
 216     flag = print_bt(f, flag);
 217     X(32);
 218 #endif /* HAVE_U_INT32_T */
 219 #ifndef HAVE_U_INT64_T
 220     flag = print_bt(f, flag);
 221     X(64);
 222 #endif /* HAVE_U_INT64_T */
 223
 224     if(flag){
 225         fprintf(f, "\n");
 226         fprintf(f, "#endif /* __BIT_TYPES_DEFINED__ */\n\n");
 227     }
 228 #ifdef KRB5
 229     fprintf(f, "\n");
 230 #if defined(HAVE_SOCKLEN_T)
 231     fprintf(f, "typedef socklen_t krb5_socklen_t;\n");
 232 #else
 233     fprintf(f, "typedef int krb5_socklen_t;\n");
 234 #endif
 235 #if defined(HAVE_SSIZE_T)
 236 #ifdef HAVE_UNISTD_H
 237     fprintf(f, "#include <unistd.h>\n");
 238 #endif
 239     fprintf(f, "typedef ssize_t krb5_ssize_t;\n");
 240 #else
 241     fprintf(f, "typedef int krb5_ssize_t;\n");
 242 #endif
 243     fprintf(f, "\n");
 244
 245 #if defined(_WIN32)
 246     fprintf(f, "typedef SOCKET krb5_socket_t;\n");
 247 #else
 248     fprintf(f, "typedef int krb5_socket_t;\n");
 249 #endif
 250     fprintf(f, "\n");
 251
 252 #endif /* KRB5 */
 253     fprintf(f, "#endif /* %s */\n", hb);
 254
 255     if (f != stdout)
 256         fclose(f);
 257     return 0;
 258 }