1 /* wconfig.c */ 2 /* 3 * Copyright 1995,1996,1997,1998 by the Massachusetts Institute of Technology. 4 * All Rights Reserved. 5 * 6 * Export of this software from the United States of America may 7 * require a specific license from the United States Government. 8 * It is the responsibility of any person or organization contemplating 9 * export to obtain such a license before exporting. 10 * 11 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 12 * distribute this software and its documentation for any purpose and 13 * without fee is hereby granted, provided that the above copyright 14 * notice appear in all copies and that both that copyright notice and 15 * this permission notice appear in supporting documentation, and that 16 * the name of M.I.T. not be used in advertising or publicity pertaining 17 * to distribution of the software without specific, written prior 18 * permission. Furthermore if you modify this software you must label 19 * your software as modified software and not distribute it in such a 20 * fashion that it might be confused with the original M.I.T. software. 21 * M.I.T. makes no representations about the suitability of 22 * this software for any purpose. It is provided "as is" without express 23 * or implied warranty. 24 */ 25 26 /* 27 * Program to take the place of the configure shell script under DOS. 28 * The makefile.in files are constructed in such a way that all this 29 * program needs to do is uncomment lines beginning ##DOS by removing the 30 * first 5 characters of the line. This will allow lines like: 31 * ##DOS!include win-pre.in to become: !include win-pre.in 32 * 33 * We also turn any line beginning with '@' into a blank line. 34 * 35 * If a config directory is specified, then the output will be start with 36 * config\pre.in, then the filtered stdin text, and will end with 37 * config\post.in. 38 * 39 * Syntax: wconfig [options] [config_directory] <input_file >output_file 40 * 41 */ 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <ctype.h> 46 47 static int copy_file (char *path, char *fname); 48 void add_ignore_list(char *str); 49 50 int mit_specific = 0; 51 52 char *win16_flag = "WIN16##"; 53 char *win32_flag = "WIN32##"; 54 55 56 int main(int argc, char *argv[]) 57 { 58 char *ignore_str = "--ignore="; 59 int ignore_len; 60 char *cp, *tmp; 61 char *win_flag; 62 char wflags[1024]; 63 size_t wlen, alen; 64 65 #ifdef _WIN32 66 win_flag = win32_flag; 67 #else 68 win_flag = "UNIX##"; 69 #endif 70 71 wlen = 0; 72 73 ignore_len = strlen(ignore_str); 74 argc--; argv++; 75 while (*argv && *argv[0] == '-') { 76 alen = strlen(*argv); 77 if (wlen + 1 + alen > sizeof (wflags) - 1) { 78 fprintf (stderr, 79 "wconfig: argument list too long (internal limit %lu)", 80 (unsigned long) sizeof (wflags)); 81 exit (1); 82 } 83 if (wlen > 0) 84 wflags[wlen++] = ' '; 85 memcpy(&wflags[wlen], *argv, alen); 86 wlen += alen; 87 88 if (!strcmp(*argv, "--mit")) { 89 mit_specific = 1; 90 argc--; argv++; 91 continue; 92 } 93 if (!strcmp(*argv, "--win16")) { 94 win_flag = win16_flag; 95 argc--; argv++; 96 continue; 97 } 98 if (!strcmp(*argv, "--win32")) { 99 win_flag = win32_flag; 100 argc--; argv++; 101 continue; 102 } 103 if (!strncmp(*argv, "--enable-", 9)) { 104 tmp = malloc(alen - ignore_len + 3); 105 if (!tmp) { 106 fprintf(stderr, 107 "wconfig: malloc failed!\n"); 108 exit(1); 109 } 110 memcpy(tmp, *argv + ignore_len, alen - ignore_len); 111 memcpy(tmp + alen - ignore_len, "##", 3); 112 for (cp = tmp; *cp; cp++) { 113 if (islower(*cp)) 114 *cp = toupper(*cp); 115 } 116 add_ignore_list(tmp); 117 argc--; argv++; 118 continue; 119 } 120 if (!strncmp(*argv, ignore_str, ignore_len)) { 121 add_ignore_list((*argv)+ignore_len); 122 argc--; argv++; 123 continue; 124 } 125 fprintf(stderr, "Invalid option: %s\n", *argv); 126 exit(1); 127 } 128 wflags[wlen] = '\0'; 129 130 if (win_flag) 131 add_ignore_list(win_flag); 132 133 if (mit_specific) 134 add_ignore_list("MIT##"); 135 136 if (wflags[0] && (argc > 0)) 137 printf("WCONFIG_FLAGS=%s\n", wflags); 138 139 if (argc > 0) 140 copy_file (*argv, "win-pre.in"); 141 142 copy_file("", "-"); 143 144 if (argc > 0) 145 copy_file (*argv, "win-post.in"); 146 147 return 0; 148 } 149 150 char *ignore_list[64] = { 151 "DOS##", 152 "DOS", 153 }; 154 155 /* 156 * Add a new item to the ignore list 157 */ 158 void add_ignore_list(char *str) 159 { 160 char **cpp; 161 162 for (cpp = ignore_list; *cpp; cpp++) 163 ; 164 *cpp = str; 165 } 166 167 168 /* 169 * 170 * Copy_file 171 * 172 * Copies file 'path\fname' to stdout. 173 * 174 */ 175 static int 176 copy_file (char *path, char *fname) 177 { 178 FILE *fin; 179 char buf[1024]; 180 char **cpp, *ptr; 181 size_t len, plen, flen; 182 183 if (strcmp(fname, "-") == 0) { 184 fin = stdin; 185 } else { 186 plen = strlen(path); 187 flen = strlen(fname); 188 if (plen + 1 + flen > sizeof(buf) - 1) { 189 fprintf(stderr, "Name %s or %s too long", path, fname); 190 return 1; 191 } 192 memcpy(buf, path, plen); 193 #ifdef _WIN32 194 buf[plen] = '\\'; 195 #else 196 buf[plen] = '/'; 197 #endif 198 memcpy(buf + plen + 1, fname, flen); 199 buf[plen + 1 + flen] = '\0'; 200 fin = fopen (buf, "r"); /* File to read */ 201 if (fin == NULL) { 202 fprintf(stderr, "wconfig: Can't open file %s\n", buf); 203 return 1; 204 } 205 } 206 207 208 while (fgets (buf, sizeof(buf), fin) != NULL) { /* Copy file over */ 209 if (buf[0] == '@') { 210 fputs("\n", stdout); 211 continue; 212 } 213 if (buf[0] != '#' || buf[1] != '#') { 214 fputs(buf, stdout); 215 continue; 216 } 217 ptr = buf; 218 for (cpp = ignore_list; *cpp; cpp++) { 219 len = strlen(*cpp); 220 if (memcmp (*cpp, buf+2, len) == 0) { 221 ptr += 2+len; 222 break; 223 } 224 } 225 fputs(ptr, stdout); 226 } 227 228 fclose (fin); 229 230 return 0; 231 } 232