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 void error_loc(const char *s, ...)
  70 {
  71         loc_info_t cur_loc = CURRENT_LOCATION;
  72         va_list ap;
  73         va_start(ap, s);
  74         generic_msg(&cur_loc, s, "error", ap);
  75         va_end(ap);
  76         exit(1);
  77 }
  78
  79 /* yyerror:  yacc assumes this is not newline terminated.  */
  80 void parser_error(const char *s)
  81 {
  82         error_loc("%s\n", s);
  83 }
  84
  85 void error_loc_info(const loc_info_t *loc_info, const char *s, ...)
  86 {
  87         va_list ap;
  88         va_start(ap, s);
  89         generic_msg(loc_info, s, "error", ap);
  90         va_end(ap);
  91         exit(1);
  92 }
  93
  94 int parser_warning(const char *s, ...)
  95 {
  96         loc_info_t cur_loc = CURRENT_LOCATION;
  97         va_list ap;
  98         va_start(ap, s);
  99         generic_msg(&cur_loc, s, "warning", ap);
 100         va_end(ap);
 101         return 0;
 102 }
 103
 104 void error(const char *s, ...)
 105 {
 106         va_list ap;
 107         va_start(ap, s);
 108         fprintf(stderr, "error: ");
 109         vfprintf(stderr, s, ap);
 110         va_end(ap);
 111         exit(2);
 112 }
 113
 114 void warning(const char *s, ...)
 115 {
 116         va_list ap;
 117         va_start(ap, s);
 118         fprintf(stderr, "warning: ");
 119         vfprintf(stderr, s, ap);
 120         va_end(ap);
 121 }
 122
 123 void warning_loc_info(const loc_info_t *loc_info, const char *s, ...)
 124 {
 125         va_list ap;
 126         va_start(ap, s);
 127         generic_msg(loc_info, s, "warning", ap);
 128         va_end(ap);
 129 }
 130
 131 void chat(const char *s, ...)
 132 {
 133         if(debuglevel & DEBUGLEVEL_CHAT)
 134         {
 135                 va_list ap;
 136                 va_start(ap, s);
 137                 fprintf(stderr, "chat: ");
 138                 vfprintf(stderr, s, ap);
 139                 va_end(ap);
 140         }
 141 }
 142
 143 char *dup_basename(const char *name, const char *ext)
 144 {
 145         int namelen;
 146         int extlen = strlen(ext);
 147         char *base;
 148         char *slash;
 149
 150         if(!name)
 151                 name = "widl.tab";
 152
 153         slash = strrchr(name, '/');
 154         if (!slash)
 155                 slash = strrchr(name, '\\');
 156
 157         if (slash)
 158                 name = slash + 1;
 159
 160         namelen = strlen(name);
 161
 162         /* +4 for later extension and +1 for '\0' */
 163         base = xmalloc(namelen +4 +1);
 164         strcpy(base, name);
 165         if(!strcasecmp(name + namelen-extlen, ext))
 166         {
 167                 base[namelen - extlen] = '\0';
 168         }
 169         return base;
 170 }
 171
 172 size_t widl_getline(char **linep, size_t *lenp, FILE *fp)
 173 {
 174     char *line = *linep;
 175     size_t len = *lenp;
 176     size_t n = 0;
 177
 178     if (!line)
 179     {
 180         len = 64;
 181         line = xmalloc(len);
 182     }
 183
 184     while (fgets(&line[n], len - n, fp))
 185     {
 186         n += strlen(&line[n]);
 187         if (line[n - 1] == '\n')
 188             break;
 189         else if (n == len - 1)
 190         {
 191             len *= 2;
 192             line = xrealloc(line, len);
 193         }
 194     }
 195
 196     *linep = line;
 197     *lenp = len;
 198     return n;
 199 }
 200
 201 void *xmalloc(size_t size)
 202 {
 203     void *res;
 204
 205     assert(size > 0);
 206     res = malloc(size);
 207     if(res == NULL)
 208     {
 209         error("Virtual memory exhausted.\n");
 210     }
 211     memset(res, 0x55, size);
 212     return res;
 213 }
 214
 215
 216 void *xrealloc(void *p, size_t size)
 217 {
 218     void *res;
 219
 220     assert(size > 0);
 221     res = realloc(p, size);
 222     if(res == NULL)
 223     {
 224         error("Virtual memory exhausted.\n");
 225     }
 226     return res;
 227 }
 228
 229 char *xstrdup(const char *str)
 230 {
 231         char *s;
 232
 233         assert(str != NULL);
 234         s = xmalloc(strlen(str)+1);
 235         return strcpy(s, str);
 236 }
 237
 238 int strendswith(const char* str, const char* end)
 239 {
 240     int l = strlen(str);
 241     int m = strlen(end);
 242     return l >= m && strcmp(str + l - m, end) == 0;
 243 }
 244
 245 /*******************************************************************
 246  *         buffer management
 247  *
 248  * Function for writing to a memory buffer.
 249  */
 250
 251 int byte_swapped = 0;
 252 unsigned char *output_buffer;
 253 size_t output_buffer_pos;
 254 size_t output_buffer_size;
 255
 256 static void check_output_buffer_space( size_t size )
 257 {
 258     if (output_buffer_pos + size >= output_buffer_size)
 259     {
 260         output_buffer_size = max( output_buffer_size * 2, output_buffer_pos + size );
 261         output_buffer = xrealloc( output_buffer, output_buffer_size );
 262     }
 263 }
 264
 265 void init_output_buffer(void)
 266 {
 267     output_buffer_size = 1024;
 268     output_buffer_pos = 0;
 269     output_buffer = xmalloc( output_buffer_size );
 270 }
 271
 272 void flush_output_buffer( const char *name )
 273 {
 274     int fd = open( name, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666 );
 275     if (fd == -1) error( "Error creating %s\n", name );
 276     if (write( fd, output_buffer, output_buffer_pos ) != output_buffer_pos)
 277         error( "Error writing to %s\n", name );
 278     close( fd );
 279     free( output_buffer );
 280 }
 281
 282 void put_data( const void *data, size_t size )
 283 {
 284     check_output_buffer_space( size );
 285     memcpy( output_buffer + output_buffer_pos, data, size );
 286     output_buffer_pos += size;
 287 }
 288
 289 void put_byte( unsigned char val )
 290 {
 291     check_output_buffer_space( 1 );
 292     output_buffer[output_buffer_pos++] = val;
 293 }
 294
 295 void put_word( unsigned short val )
 296 {
 297     if (byte_swapped) val = (val << 8) | (val >> 8);
 298     put_data( &val, sizeof(val) );
 299 }
 300
 301 void put_dword( unsigned int val )
 302 {
 303     if (byte_swapped)
 304         val = ((val << 24) | ((val << 8) & 0x00ff0000) | ((val >> 8) & 0x0000ff00) | (val >> 24));
 305     put_data( &val, sizeof(val) );
 306 }
 307
 308 void put_qword( unsigned int val )
 309 {
 310     if (byte_swapped)
 311     {
 312         put_dword( 0 );
 313         put_dword( val );
 314     }
 315     else
 316     {
 317         put_dword( val );
 318         put_dword( 0 );
 319     }
 320 }
 321
 322 /* pointer-sized word */
 323 void put_pword( unsigned int val )
 324 {
 325     if (pointer_size == 8) put_qword( val );
 326     else put_dword( val );
 327 }
 328
 329 void put_str( int indent, const char *format, ... )
 330 {
 331     int n;
 332     va_list args;
 333
 334     check_output_buffer_space( 4 * indent );
 335     memset( output_buffer + output_buffer_pos, ' ', 4 * indent );
 336     output_buffer_pos += 4 * indent;
 337
 338     for (;;)
 339     {
 340         size_t size = output_buffer_size - output_buffer_pos;
 341         va_start( args, format );
 342         n = vsnprintf( (char *)output_buffer + output_buffer_pos, size, format, args );
 343         va_end( args );
 344         if (n == -1) size *= 2;
 345         else if ((size_t)n >= size) size = n + 1;
 346         else
 347         {
 348             output_buffer_pos += n;
 349             return;
 350         }
 351         check_output_buffer_space( size );
 352     }
 353 }
 354
 355 void align_output( unsigned int align )
 356 {
 357     size_t size = align - (output_buffer_pos % align);
 358
 359     if (size == align) return;
 360     check_output_buffer_space( size );
 361     memset( output_buffer + output_buffer_pos, 0, size );
 362     output_buffer_pos += size;
 363 }