tools/wpp/wpp.c

   1 /*
   2  * Exported functions of the Wine preprocessor
   3  *
   4  * Copyrignt 1998 Bertho A. Stultiens
   5  * Copyright 2002 Alexandre Julliard
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <time.h>
  26 #include <stdlib.h>
  27
  28 #include "wpp_private.h"
  29 #include "wpp.h"
  30
  31 static void add_special_defines(void)
  32 {
  33     time_t now = time(NULL);
  34     pp_entry_t *ppp;
  35     char buf[32];
  36
  37     strftime(buf, sizeof(buf), "\"%b %d %Y\"", localtime(&now));
  38     pp_add_define( pp_xstrdup("__DATE__"), pp_xstrdup(buf) );
  39
  40     strftime(buf, sizeof(buf), "\"%H:%M:%S\"", localtime(&now));
  41     pp_add_define( pp_xstrdup("__TIME__"), pp_xstrdup(buf) );
  42
  43     ppp = pp_add_define( pp_xstrdup("__FILE__"), pp_xstrdup("") );
  44     ppp->type = def_special;
  45
  46     ppp = pp_add_define( pp_xstrdup("__LINE__"), pp_xstrdup("") );
  47     ppp->type = def_special;
  48 }
  49
  50
  51 /* add a define to the preprocessor list */
  52 void wpp_add_define( const char *name, const char *value )
  53 {
  54     if (!value) value = "";
  55     pp_add_define( pp_xstrdup(name), pp_xstrdup(value) );
  56 }
  57
  58
  59 /* add a command-line define of the form NAME=VALUE */
  60 void wpp_add_cmdline_define( const char *value )
  61 {
  62     char *str = pp_xstrdup(value);
  63     char *p = strchr( str, '=' );
  64     if (p) *p++ = 0;
  65     else p = "";
  66     pp_add_define( str, pp_xstrdup(p) );
  67 }
  68
  69
  70 /* set the various debug flags */
  71 void wpp_set_debug( int lex_debug, int parser_debug, int msg_debug )
  72 {
  73     pp_flex_debug   = lex_debug;
  74     ppdebug         = parser_debug;
  75     pp_status.debug = msg_debug;
  76 }
  77
  78
  79 /* set the pedantic mode */
  80 void wpp_set_pedantic( int on )
  81 {
  82     pp_status.pedantic = on;
  83 }
  84
  85
  86 /* the main preprocessor parsing loop */
  87 int wpp_parse( const char *input, FILE *output )
  88 {
  89     int ret;
  90
  91     add_special_defines();
  92
  93     if (!input) ppin = stdin;
  94     else if (!(ppin = fopen(input, "rt")))
  95     {
  96         fprintf(stderr,"Could not open %s\n", input);
  97         exit(2);
  98     }
  99
 100     pp_status.input = input;
 101
 102     ppout = output;
 103     fprintf(ppout, "# 1 \"%s\" 1\n", input ? input : "");
 104
 105     ret = ppparse();
 106
 107     if (input) fclose(ppin);
 108     return ret;
 109 }
 110
 111
 112 /* parse into a temporary file */
 113 int wpp_parse_temp( const char *input, const char *output_base, char **output_name )
 114 {
 115     FILE *output;
 116     int ret, fd;
 117     char *temp_name;
 118
 119     if (!output_base || !output_base[0]) output_base = "wpptmp";
 120
 121     temp_name = pp_xmalloc( strlen(output_base) + 8 );
 122     strcpy( temp_name, output_base );
 123     strcat( temp_name, ".XXXXXX" );
 124
 125     if((fd = mkstemp( temp_name )) == -1)
 126     {
 127         fprintf(stderr, "Could not generate a temp name from %s\n", temp_name);
 128         exit(2);
 129     }
 130
 131     if (!(output = fdopen(fd, "wt")))
 132     {
 133         fprintf(stderr,"Could not open fd %s for writing\n", temp_name);
 134         exit(2);
 135     }
 136
 137     *output_name = temp_name;
 138     ret = wpp_parse( input, output );
 139     fclose( output );
 140     return ret;
 141 }