lib/com_err/compile_et.c

   1 /*
   2  * Copyright (c) 1998-2002 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 #undef ROKEN_RENAME
  35 #include "compile_et.h"
  36 #include <getarg.h>
  37
  38 RCSID("$Id$");
  39
  40 #include <roken.h>
  41 #include <err.h>
  42 #include "parse.h"
  43
  44 int numerror;
  45 extern FILE *yyin;
  46
  47 extern void yyparse(void);
  48
  49 long base_id;
  50 int number;
  51 char *prefix;
  52 char *id_str;
  53
  54 char name[128];
  55 char Basename[128];
  56
  57 #ifdef YYDEBUG
  58 extern int yydebug = 1;
  59 #endif
  60
  61 char *filename;
  62 char hfn[128];
  63 char cfn[128];
  64
  65 struct error_code *codes = NULL;
  66
  67 static int
  68 generate_c(void)
  69 {
  70     int n;
  71     struct error_code *ec;
  72
  73     FILE *c_file = fopen(cfn, "w");
  74     if(c_file == NULL)
  75         return 1;
  76
  77     fprintf(c_file, "/* Generated from %s */\n", filename);
  78     if(id_str)
  79         fprintf(c_file, "/* %s */\n", id_str);
  80     fprintf(c_file, "\n");
  81     fprintf(c_file, "#include <stddef.h>\n");
  82     fprintf(c_file, "#include <com_err.h>\n");
  83     fprintf(c_file, "#include \"%s\"\n", hfn);
  84     fprintf(c_file, "\n");
  85
  86     fprintf(c_file, "static const char *%s_error_strings[] = {\n", name);
  87
  88     for(ec = codes, n = 0; ec; ec = ec->next, n++) {
  89         while(n < ec->number) {
  90             fprintf(c_file, "\t/* %03d */ \"Reserved %s error (%d)\",\n",
  91                     n, name, n);
  92             n++;
  93
  94         }
  95         fprintf(c_file, "\t/* %03d */ \"%s\",\n", ec->number, ec->string);
  96     }
  97
  98     fprintf(c_file, "\tNULL\n");
  99     fprintf(c_file, "};\n");
 100     fprintf(c_file, "\n");
 101     fprintf(c_file, "#define num_errors %d\n", number);
 102     fprintf(c_file, "\n");
 103     fprintf(c_file,
 104             "void initialize_%s_error_table_r(struct et_list **list)\n",
 105             name);
 106     fprintf(c_file, "{\n");
 107     fprintf(c_file,
 108             "    initialize_error_table_r(list, %s_error_strings, "
 109             "num_errors, ERROR_TABLE_BASE_%s);\n", name, name);
 110     fprintf(c_file, "}\n");
 111     fprintf(c_file, "\n");
 112     fprintf(c_file, "void initialize_%s_error_table(void)\n", name);
 113     fprintf(c_file, "{\n");
 114     fprintf(c_file,
 115             "    init_error_table(%s_error_strings, ERROR_TABLE_BASE_%s, "
 116             "num_errors);\n", name, name);
 117     fprintf(c_file, "}\n");
 118
 119     fclose(c_file);
 120     return 0;
 121 }
 122
 123 static int
 124 generate_h(void)
 125 {
 126     struct error_code *ec;
 127     char fn[128];
 128     FILE *h_file = fopen(hfn, "w");
 129     char *p;
 130
 131     if(h_file == NULL)
 132         return 1;
 133
 134     snprintf(fn, sizeof(fn), "__%s__", hfn);
 135     for(p = fn; *p; p++)
 136         if(!isalnum((unsigned char)*p))
 137             *p = '_';
 138
 139     fprintf(h_file, "/* Generated from %s */\n", filename);
 140     if(id_str)
 141         fprintf(h_file, "/* %s */\n", id_str);
 142     fprintf(h_file, "\n");
 143     fprintf(h_file, "#ifndef %s\n", fn);
 144     fprintf(h_file, "#define %s\n", fn);
 145     fprintf(h_file, "\n");
 146     fprintf(h_file, "struct et_list;\n");
 147     fprintf(h_file, "\n");
 148     fprintf(h_file,
 149             "void initialize_%s_error_table_r(struct et_list **);\n",
 150             name);
 151     fprintf(h_file, "\n");
 152     fprintf(h_file, "void initialize_%s_error_table(void);\n", name);
 153     fprintf(h_file, "#define init_%s_err_tbl initialize_%s_error_table\n",
 154             name, name);
 155     fprintf(h_file, "\n");
 156     fprintf(h_file, "typedef enum %s_error_number{\n", name);
 157
 158     for(ec = codes; ec; ec = ec->next) {
 159         fprintf(h_file, "\t%s = %ld%s\n", ec->name, base_id + ec->number,
 160                 (ec->next != NULL) ? "," : "");
 161     }
 162
 163     fprintf(h_file, "} %s_error_number;\n", name);
 164     fprintf(h_file, "\n");
 165     fprintf(h_file, "#define ERROR_TABLE_BASE_%s %ld\n", name, base_id);
 166     fprintf(h_file, "\n");
 167     fprintf(h_file, "#endif /* %s */\n", fn);
 168
 169
 170     fclose(h_file);
 171     return 0;
 172 }
 173
 174 static int
 175 generate(void)
 176 {
 177     return generate_c() || generate_h();
 178 }
 179
 180 int version_flag;
 181 int help_flag;
 182 struct getargs args[] = {
 183     { "version", 0, arg_flag, &version_flag },
 184     { "help", 0, arg_flag, &help_flag }
 185 };
 186 int num_args = sizeof(args) / sizeof(args[0]);
 187
 188 static void
 189 usage(int code)
 190 {
 191     arg_printusage(args, num_args, NULL, "error-table");
 192     exit(code);
 193 }
 194
 195 int
 196 main(int argc, char **argv)
 197 {
 198     char *p;
 199     int optidx = 0;
 200
 201     setprogname(argv[0]);
 202     if(getarg(args, num_args, argc, argv, &optidx))
 203         usage(1);
 204     if(help_flag)
 205         usage(0);
 206     if(version_flag) {
 207         print_version(NULL);
 208         exit(0);
 209     }
 210
 211     if(optidx == argc)
 212         usage(1);
 213     filename = argv[optidx];
 214     yyin = fopen(filename, "r");
 215     if(yyin == NULL)
 216         err(1, "%s", filename);
 217
 218
 219     p = strrchr(filename, '/');
 220     if(p)
 221         p++;
 222     else
 223         p = filename;
 224     strlcpy(Basename, p, sizeof(Basename));
 225
 226     Basename[strcspn(Basename, ".")] = '\0';
 227
 228     snprintf(hfn, sizeof(hfn), "%s.h", Basename);
 229     snprintf(cfn, sizeof(cfn), "%s.c", Basename);
 230
 231     yyparse();
 232     if(numerror)
 233         return 1;
 234
 235     return generate();
 236 }