Sweden-Number/tools/widl/utils.c

/*
 * 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);
}