wine/libs/wpp/wpp.c

232 lines
5.1 KiB
C

/*
* Exported functions of the Wine preprocessor
*
* Copyright 1998 Bertho A. Stultiens
* Copyright 2002 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <time.h>
#include <stdlib.h>
#include "wpp_private.h"
#include "wine/wpp.h"
int ppy_debug, pp_flex_debug;
struct define
{
struct define *next;
char *name;
char *value;
};
static struct define *cmdline_defines;
static void add_cmdline_defines(void)
{
struct define *def;
for (def = cmdline_defines; def; def = def->next)
{
if (def->value) pp_add_define( def->name, def->value );
}
}
static void del_cmdline_defines(void)
{
struct define *def;
for (def = cmdline_defines; def; def = def->next)
{
if (def->value) pp_del_define( def->name );
}
}
static void add_special_defines(void)
{
time_t now = time(NULL);
pp_entry_t *ppp;
char buf[32];
strftime(buf, sizeof(buf), "\"%b %d %Y\"", localtime(&now));
pp_add_define( "__DATE__", buf );
strftime(buf, sizeof(buf), "\"%H:%M:%S\"", localtime(&now));
pp_add_define( "__TIME__", buf );
ppp = pp_add_define( "__FILE__", "" );
if(ppp)
ppp->type = def_special;
ppp = pp_add_define( "__LINE__", "" );
if(ppp)
ppp->type = def_special;
}
static void del_special_defines(void)
{
pp_del_define( "__DATE__" );
pp_del_define( "__TIME__" );
pp_del_define( "__FILE__" );
pp_del_define( "__LINE__" );
}
/* add a define to the preprocessor list */
int wpp_add_define( const char *name, const char *value )
{
struct define *def;
if (!value) value = "";
for (def = cmdline_defines; def; def = def->next)
{
if (!strcmp( def->name, name ))
{
char *new_value = pp_xstrdup(value);
if(!new_value)
return 1;
free( def->value );
def->value = new_value;
return 0;
}
}
def = pp_xmalloc( sizeof(*def) );
if(!def)
return 1;
def->next = cmdline_defines;
def->name = pp_xstrdup(name);
if(!def->name)
{
free(def);
return 1;
}
def->value = pp_xstrdup(value);
if(!def->value)
{
free(def->name);
free(def);
return 1;
}
cmdline_defines = def;
return 0;
}
/* undefine a previously added definition */
void wpp_del_define( const char *name )
{
struct define *def;
for (def = cmdline_defines; def; def = def->next)
{
if (!strcmp( def->name, name ))
{
free( def->value );
def->value = NULL;
return;
}
}
}
/* add a command-line define of the form NAME=VALUE */
int wpp_add_cmdline_define( const char *value )
{
char *p;
char *str = pp_xstrdup(value);
if(!str)
return 1;
p = strchr( str, '=' );
if (p) *p++ = 0;
wpp_add_define( str, p );
free( str );
return 0;
}
/* set the various debug flags */
void wpp_set_debug( int lex_debug, int parser_debug, int msg_debug )
{
pp_flex_debug = lex_debug;
ppy_debug = parser_debug;
pp_status.debug = msg_debug;
}
/* set the pedantic mode */
void wpp_set_pedantic( int on )
{
pp_status.pedantic = on;
}
/* the main preprocessor parsing loop */
int wpp_parse( const char *input, FILE *output )
{
int ret;
pp_status.input = NULL;
pp_status.line_number = 1;
pp_status.char_number = 1;
pp_status.state = 0;
ret = pp_push_define_state();
if(ret)
return ret;
add_cmdline_defines();
add_special_defines();
if (!input) pp_status.file = stdin;
else if (!(pp_status.file = wpp_callbacks->open(input, 1)))
{
ppy_error("Could not open %s\n", input);
del_special_defines();
del_cmdline_defines();
pp_pop_define_state();
return 2;
}
pp_status.input = input;
ppy_out = output;
pp_writestring("# 1 \"%s\" 1\n", input ? input : "");
ret = ppy_parse();
/* If there were errors during processing, return an error code */
if (!ret && pp_status.state) ret = pp_status.state;
if (input) wpp_callbacks->close(pp_status.file);
/* Clean if_stack, it could remain dirty on errors */
while (pp_get_if_depth()) pp_pop_if();
del_special_defines();
del_cmdline_defines();
pp_pop_define_state();
return ret;
}
void wpp_set_callbacks( const struct wpp_callbacks *callbacks )
{
wpp_callbacks = callbacks;
}