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 #define CURRENT_LOCATION { input_name ? input_name : "stdin", line_number, parser_text }
  37
  38 static const int want_near_indication = 0;
  39
  40 static void make_print(char *str)
  41 {
  42         while(*str)
  43         {
  44                 if(!isprint(*str))
  45                         *str = ' ';
  46                 str++;
  47         }
  48 }
  49
  50 static void generic_msg(const loc_info_t *loc_info, const char *s, const char *t, va_list ap)
  51 {
  52         fprintf(stderr, "%s:%d: %s: ", loc_info->input_name, loc_info->line_number, t);
  53         vfprintf(stderr, s, ap);
  54
  55         if (want_near_indication)
  56         {
  57                 char *cpy;
  58                 if(loc_info->near_text)
  59                 {
  60                         cpy = xstrdup(loc_info->near_text);
  61                         make_print(cpy);
  62                         fprintf(stderr, " near '%s'", cpy);
  63                         free(cpy);
  64                 }
  65         }
  66 }
  67
  68
  69 /* yyerror:  yacc assumes this is not newline terminated.  */
  70 int parser_error(const char *s, ...)
  71 {
  72         loc_info_t cur_location = CURRENT_LOCATION;
  73         va_list ap;
  74         va_start(ap, s);
  75         generic_msg(&cur_location, s, "Error", ap);
  76         fprintf(stderr, "\n");
  77         va_end(ap);
  78         exit(1);
  79         return 1;
  80 }
  81
  82 void error_loc(const char *s, ...)
  83 {
  84         loc_info_t cur_loc = CURRENT_LOCATION;
  85         va_list ap;
  86         va_start(ap, s);
  87         generic_msg(&cur_loc, s, "Error", ap);
  88         va_end(ap);
  89         exit(1);
  90 }
  91
  92 void error_loc_info(const loc_info_t *loc_info, const char *s, ...)
  93 {
  94         va_list ap;
  95         va_start(ap, s);
  96         generic_msg(loc_info, s, "Error", ap);
  97         va_end(ap);
  98         exit(1);
  99 }
 100
 101 int parser_warning(const char *s, ...)
 102 {
 103         loc_info_t cur_loc = CURRENT_LOCATION;
 104         va_list ap;
 105         va_start(ap, s);
 106         generic_msg(&cur_loc, s, "Warning", ap);
 107         va_end(ap);
 108         return 0;
 109 }
 110
 111 void error(const char *s, ...)
 112 {
 113         va_list ap;
 114         va_start(ap, s);
 115         fprintf(stderr, "error: ");
 116         vfprintf(stderr, s, ap);
 117         va_end(ap);
 118         exit(2);
 119 }
 120
 121 void warning(const char *s, ...)
 122 {
 123         va_list ap;
 124         va_start(ap, s);
 125         fprintf(stderr, "warning: ");
 126         vfprintf(stderr, s, ap);
 127         va_end(ap);
 128 }
 129
 130 void warning_loc_info(const loc_info_t *loc_info, const char *s, ...)
 131 {
 132         va_list ap;
 133         va_start(ap, s);
 134         generic_msg(loc_info, s, "Warning", ap);
 135         va_end(ap);
 136 }
 137
 138 void chat(const char *s, ...)
 139 {
 140         if(debuglevel & DEBUGLEVEL_CHAT)
 141         {
 142                 va_list ap;
 143                 va_start(ap, s);
 144                 fprintf(stderr, "chat: ");
 145                 vfprintf(stderr, s, ap);
 146                 va_end(ap);
 147         }
 148 }
 149
 150 char *dup_basename(const char *name, const char *ext)
 151 {
 152         int namelen;
 153         int extlen = strlen(ext);
 154         char *base;
 155         char *slash;
 156
 157         if(!name)
 158                 name = "widl.tab";
 159
 160         slash = strrchr(name, '/');
 161         if (!slash)
 162                 slash = strrchr(name, '\\');
 163
 164         if (slash)
 165                 name = slash + 1;
 166
 167         namelen = strlen(name);
 168
 169         /* +4 for later extension and +1 for '\0' */
 170         base = xmalloc(namelen +4 +1);
 171         strcpy(base, name);
 172         if(!strcasecmp(name + namelen-extlen, ext))
 173         {
 174                 base[namelen - extlen] = '\0';
 175         }
 176         return base;
 177 }
 178
 179 size_t widl_getline(char **linep, size_t *lenp, FILE *fp)
 180 {
 181     char *line = *linep;
 182     size_t len = *lenp;
 183     size_t n = 0;
 184
 185     if (!line)
 186     {
 187         len = 64;
 188         line = xmalloc(len);
 189     }
 190
 191     while (fgets(&line[n], len - n, fp))
 192     {
 193         n += strlen(&line[n]);
 194         if (line[n - 1] == '\n')
 195             break;
 196         else if (n == len - 1)
 197         {
 198             len *= 2;
 199             line = xrealloc(line, len);
 200         }
 201     }
 202
 203     *linep = line;
 204     *lenp = len;
 205     return n;
 206 }
 207
 208 void *xmalloc(size_t size)
 209 {
 210     void *res;
 211
 212     assert(size > 0);
 213     res = malloc(size);
 214     if(res == NULL)
 215     {
 216         error("Virtual memory exhausted.\n");
 217     }
 218     memset(res, 0x55, size);
 219     return res;
 220 }
 221
 222
 223 void *xrealloc(void *p, size_t size)
 224 {
 225     void *res;
 226
 227     assert(size > 0);
 228     res = realloc(p, size);
 229     if(res == NULL)
 230     {
 231         error("Virtual memory exhausted.\n");
 232     }
 233     return res;
 234 }
 235
 236 char *xstrdup(const char *str)
 237 {
 238         char *s;
 239
 240         assert(str != NULL);
 241         s = xmalloc(strlen(str)+1);
 242         return strcpy(s, str);
 243 }