tools/widl/utils.c

   1 /*
   2  * Utility routines
   3  *
   4  * Copyright 1998 Bertho A. Stultiens
   5  * Copyright 2002 Ove Kaaven
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <assert.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <stdarg.h>
  29 #include <string.h>
  30 #include <ctype.h>
  31
  32 #include "widl.h"
  33 #include "utils.h"
  34 #include "parser.h"
  35
  36 static const int want_near_indication = 0;
  37
  38 static void make_print(char *str)
  39 {
  40         while(*str)
  41         {
  42                 if(!isprint(*str))
  43                         *str = ' ';
  44                 str++;
  45         }
  46 }
  47
  48 static void generic_msg(const char *s, const char *t, const char *n, va_list ap)
  49 {
  50         fprintf(stderr, "%s:%d: %s: ", input_name ? input_name : "stdin", line_number, t);
  51         vfprintf(stderr, s, ap);
  52
  53         if (want_near_indication)
  54         {
  55                 char *cpy;
  56                 if(n)
  57                 {
  58                         cpy = xstrdup(n);
  59                         make_print(cpy);
  60                         fprintf(stderr, " near '%s'", cpy);
  61                         free(cpy);
  62                 }
  63         }
  64 }
  65
  66
  67 /* yyerror:  yacc assumes this is not newline terminated.  */
  68 int parser_error(const char *s, ...)
  69 {
  70         va_list ap;
  71         va_start(ap, s);
  72         generic_msg(s, "Error", parser_text, ap);
  73         fprintf(stderr, "\n");
  74         va_end(ap);
  75         exit(1);
  76         return 1;
  77 }
  78
  79 void error_loc(const char *s, ...)
  80 {
  81         va_list ap;
  82         va_start(ap, s);
  83         generic_msg(s, "Error", parser_text, ap);
  84         va_end(ap);
  85         exit(1);
  86 }
  87
  88 int parser_warning(const char *s, ...)
  89 {
  90         va_list ap;
  91         va_start(ap, s);
  92         generic_msg(s, "Warning", parser_text, ap);
  93         va_end(ap);
  94         return 0;
  95 }
  96
  97 void error(const char *s, ...)
  98 {
  99         va_list ap;
 100         va_start(ap, s);
 101         fprintf(stderr, "error: ");
 102         vfprintf(stderr, s, ap);
 103         va_end(ap);
 104         exit(2);
 105 }
 106
 107 void warning(const char *s, ...)
 108 {
 109         va_list ap;
 110         va_start(ap, s);
 111         fprintf(stderr, "warning: ");
 112         vfprintf(stderr, s, ap);
 113         va_end(ap);
 114 }
 115
 116 void chat(const char *s, ...)
 117 {
 118         if(debuglevel & DEBUGLEVEL_CHAT)
 119         {
 120                 va_list ap;
 121                 va_start(ap, s);
 122                 fprintf(stderr, "chat: ");
 123                 vfprintf(stderr, s, ap);
 124                 va_end(ap);
 125         }
 126 }
 127
 128 char *dup_basename(const char *name, const char *ext)
 129 {
 130         int namelen;
 131         int extlen = strlen(ext);
 132         char *base;
 133         char *slash;
 134
 135         if(!name)
 136                 name = "widl.tab";
 137
 138         slash = strrchr(name, '/');
 139         if (slash)
 140                 name = slash + 1;
 141
 142         namelen = strlen(name);
 143
 144         /* +4 for later extension and +1 for '\0' */
 145         base = xmalloc(namelen +4 +1);
 146         strcpy(base, name);
 147         if(!strcasecmp(name + namelen-extlen, ext))
 148         {
 149                 base[namelen - extlen] = '\0';
 150         }
 151         return base;
 152 }
 153
 154 size_t widl_getline(char **linep, size_t *lenp, FILE *fp)
 155 {
 156     char *line = *linep;
 157     size_t len = *lenp;
 158     size_t n = 0;
 159
 160     if (!line)
 161     {
 162         len = 64;
 163         line = xmalloc(len);
 164     }
 165
 166     while (fgets(&line[n], len - n, fp))
 167     {
 168         n += strlen(&line[n]);
 169         if (line[n - 1] == '\n')
 170             break;
 171         else if (n == len - 1)
 172         {
 173             len *= 2;
 174             line = xrealloc(line, len);
 175         }
 176     }
 177
 178     *linep = line;
 179     *lenp = len;
 180     return n;
 181 }
 182
 183 void *xmalloc(size_t size)
 184 {
 185     void *res;
 186
 187     assert(size > 0);
 188     res = malloc(size);
 189     if(res == NULL)
 190     {
 191         error("Virtual memory exhausted.\n");
 192     }
 193     memset(res, 0x55, size);
 194     return res;
 195 }
 196
 197
 198 void *xrealloc(void *p, size_t size)
 199 {
 200     void *res;
 201
 202     assert(size > 0);
 203     res = realloc(p, size);
 204     if(res == NULL)
 205     {
 206         error("Virtual memory exhausted.\n");
 207     }
 208     return res;
 209 }
 210
 211 char *xstrdup(const char *str)
 212 {
 213         char *s;
 214
 215         assert(str != NULL);
 216         s = xmalloc(strlen(str)+1);
 217         return strcpy(s, str);
 218 }