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 <assert.h>
  31 #include <ctype.h>
  32
  33 #include "widl.h"
  34 #include "utils.h"
  35 #include "parser.h"
  36
  37 static const int want_near_indication = 0;
  38
  39 static void make_print(char *str)
  40 {
  41         while(*str)
  42         {
  43                 if(!isprint(*str))
  44                         *str = ' ';
  45                 str++;
  46         }
  47 }
  48
  49 static void generic_msg(const char *s, const char *t, const char *n, va_list ap)
  50 {
  51         fprintf(stderr, "%s:%d: %s: ", input_name ? input_name : "stdin", line_number, t);
  52         vfprintf(stderr, s, ap);
  53
  54         if (want_near_indication)
  55         {
  56                 char *cpy;
  57                 if(n)
  58                 {
  59                         cpy = xstrdup(n);
  60                         make_print(cpy);
  61                         fprintf(stderr, " near '%s'", cpy);
  62                         free(cpy);
  63                 }
  64         }
  65 }
  66
  67
  68 /* yyerror:  yacc assumes this is not newline terminated.  */
  69 int parser_error(const char *s, ...)
  70 {
  71         va_list ap;
  72         va_start(ap, s);
  73         generic_msg(s, "Error", parser_text, ap);
  74         fprintf(stderr, "\n");
  75         va_end(ap);
  76         exit(1);
  77         return 1;
  78 }
  79
  80 void error_loc(const char *s, ...)
  81 {
  82         va_list ap;
  83         va_start(ap, s);
  84         generic_msg(s, "Error", parser_text, ap);
  85         va_end(ap);
  86         exit(1);
  87 }
  88
  89 int parser_warning(const char *s, ...)
  90 {
  91         va_list ap;
  92         va_start(ap, s);
  93         generic_msg(s, "Warning", parser_text, ap);
  94         va_end(ap);
  95         return 0;
  96 }
  97
  98 void error(const char *s, ...)
  99 {
 100         va_list ap;
 101         va_start(ap, s);
 102         fprintf(stderr, "error: ");
 103         vfprintf(stderr, s, ap);
 104         va_end(ap);
 105         exit(2);
 106 }
 107
 108 void warning(const char *s, ...)
 109 {
 110         va_list ap;
 111         va_start(ap, s);
 112         fprintf(stderr, "warning: ");
 113         vfprintf(stderr, s, ap);
 114         va_end(ap);
 115 }
 116
 117 void chat(const char *s, ...)
 118 {
 119         if(debuglevel & DEBUGLEVEL_CHAT)
 120         {
 121                 va_list ap;
 122                 va_start(ap, s);
 123                 fprintf(stderr, "chat: ");
 124                 vfprintf(stderr, s, ap);
 125                 va_end(ap);
 126         }
 127 }
 128
 129 char *dup_basename(const char *name, const char *ext)
 130 {
 131         int namelen;
 132         int extlen = strlen(ext);
 133         char *base;
 134         char *slash;
 135
 136         if(!name)
 137                 name = "widl.tab";
 138
 139         slash = strrchr(name, '/');
 140         if (slash)
 141                 name = slash + 1;
 142
 143         namelen = strlen(name);
 144
 145         /* +4 for later extension and +1 for '\0' */
 146         base = xmalloc(namelen +4 +1);
 147         strcpy(base, name);
 148         if(!strcasecmp(name + namelen-extlen, ext))
 149         {
 150                 base[namelen - extlen] = '\0';
 151         }
 152         return base;
 153 }
 154
 155 size_t widl_getline(char **linep, size_t *lenp, FILE *fp)
 156 {
 157     char *line = *linep;
 158     size_t len = *lenp;
 159     size_t n = 0;
 160
 161     if (!line)
 162     {
 163         len = 64;
 164         line = xmalloc(len);
 165     }
 166
 167     while (fgets(&line[n], len - n, fp))
 168     {
 169         n += strlen(&line[n]);
 170         if (line[n - 1] == '\n')
 171             break;
 172         else if (n == len - 1)
 173         {
 174             len *= 2;
 175             line = xrealloc(line, len);
 176         }
 177     }
 178
 179     *linep = line;
 180     *lenp = len;
 181     return n;
 182 }
 183
 184 void *xmalloc(size_t size)
 185 {
 186     void *res;
 187
 188     assert(size > 0);
 189     res = malloc(size);
 190     if(res == NULL)
 191     {
 192         error("Virtual memory exhausted.\n");
 193     }
 194     memset(res, 0x55, size);
 195     return res;
 196 }
 197
 198
 199 void *xrealloc(void *p, size_t size)
 200 {
 201     void *res;
 202
 203     assert(size > 0);
 204     res = realloc(p, size);
 205     if(res == NULL)
 206     {
 207         error("Virtual memory exhausted.\n");
 208     }
 209     return res;
 210 }
 211
 212 char *xstrdup(const char *str)
 213 {
 214         char *s;
 215
 216         assert(str != NULL);
 217         s = xmalloc(strlen(str)+1);
 218         return strcpy(s, str);
 219 }