Sweden-Number/tools/widl/utils.c

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/*
* Utility routines
*
* Copyright 1998 Bertho A. Stultiens
* Copyright 2002 Ove Kaaven
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <assert.h>
#include <ctype.h>
#include "widl.h"
#include "utils.h"
#include "parser.h"
/* #define WANT_NEAR_INDICATION */
#ifdef WANT_NEAR_INDICATION
void make_print(char *str)
{
while(*str)
{
if(!isprint(*str))
*str = ' ';
str++;
}
}
#endif
static void generic_msg(const char *s, const char *t, const char *n, va_list ap)
{
fprintf(stderr, "%s:%d: %s: ", input_name ? input_name : "stdin", line_number, t);
vfprintf(stderr, s, ap);
#ifdef WANT_NEAR_INDICATION
{
char *cpy;
if(n)
{
cpy = xstrdup(n);
make_print(cpy);
fprintf(stderr, " near '%s'", cpy);
free(cpy);
}
}
#endif
fprintf(stderr, "\n");
}
int yyerror(const char *s, ...)
{
va_list ap;
va_start(ap, s);
generic_msg(s, "Error", yytext, ap);
va_end(ap);
exit(1);
return 1;
}
int yywarning(const char *s, ...)
{
va_list ap;
va_start(ap, s);
generic_msg(s, "Warning", yytext, ap);
va_end(ap);
return 0;
}
void internal_error(const char *file, int line, const char *s, ...)
{
va_list ap;
va_start(ap, s);
fprintf(stderr, "Internal error (please report) %s %d: ", file, line);
vfprintf(stderr, s, ap);
fprintf(stderr, "\n");
va_end(ap);
exit(3);
}
void error(const char *s, ...)
{
va_list ap;
va_start(ap, s);
fprintf(stderr, "Error: ");
vfprintf(stderr, s, ap);
fprintf(stderr, "\n");
va_end(ap);
exit(2);
}
void warning(const char *s, ...)
{
va_list ap;
va_start(ap, s);
fprintf(stderr, "Warning: ");
vfprintf(stderr, s, ap);
fprintf(stderr, "\n");
va_end(ap);
}
void chat(const char *s, ...)
{
if(debuglevel & DEBUGLEVEL_CHAT)
{
va_list ap;
va_start(ap, s);
fprintf(stderr, "FYI: ");
vfprintf(stderr, s, ap);
fprintf(stderr, "\n");
va_end(ap);
}
}
char *dup_basename(const char *name, const char *ext)
{
int namelen;
int extlen = strlen(ext);
char *base;
char *slash;
if(!name)
name = "widl.tab";
slash = strrchr(name, '/');
if (slash)
name = slash + 1;
namelen = strlen(name);
/* +4 for later extension and +1 for '\0' */
base = (char *)xmalloc(namelen +4 +1);
strcpy(base, name);
if(!strcasecmp(name + namelen-extlen, ext))
{
base[namelen - extlen] = '\0';
}
return base;
}
void *xmalloc(size_t size)
{
void *res;
assert(size > 0);
res = malloc(size);
if(res == NULL)
{
error("Virtual memory exhausted.\n");
}
/*
* We set it to 0.
* This is *paramount* because we depend on it
* just about everywhere in the rest of the code.
*/
memset(res, 0, size);
return res;
}
void *xrealloc(void *p, size_t size)
{
void *res;
assert(size > 0);
res = realloc(p, size);
if(res == NULL)
{
error("Virtual memory exhausted.\n");
}
return res;
}
char *xstrdup(const char *str)
{
char *s;
assert(str != NULL);
s = (char *)xmalloc(strlen(str)+1);
return strcpy(s, str);
}