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/* misc.c -- miscellaneous common functions
Copyright (C) 1986, 1995 Greg McGary
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "strxtra.h"
#include "misc.h"
char const *
basename (char const *path)
{
char *base;
base = strrchr (path, '/');
if (base)
return ++base;
else
return path;
}
char const *
dirname (char const *path)
{
char *base;
base = strrchr (path, '/');
if (base)
return strndup (path, base - path);
else
return ".";
}
/* This is like fgets(3s), except that lines are delimited by NULs
rather than newlines. Also, we return the number of characters
gotten rather than the address of buf0. */
int
fgets0 (char *buf0, int size, FILE * in_FILE)
{
char *buf;
int c;
char *end;
buf = buf0;
end = &buf[size];
while ((c = getc (in_FILE)) > 0 && buf < end)
*buf++ = c;
*buf = '\0';
return (buf - buf0);
}
extern char const *program_name;
char const *
uerror (void)
{
static char errbuf[10];
if (errno == 0 || errno >= sys_nerr)
{
sprintf (errbuf, "error %d", errno);
return errbuf;
}
return sys_errlist[errno];
}
void
filerr (char const *syscall, char const *file_name)
{
fprintf (stderr, "%s: Cannot %s `%s' (%s)\n", program_name, syscall, file_name, uerror ());
}
int
tree8_count_levels (int cardinality)
{
int levels = 1;
cardinality--;
while (cardinality >>= 3)
++levels;
return levels;
}
int
gets_past_00 (char *tok, FILE *input_FILE)
{
int got = 0;
int c;
do
{
do
{
got++;
c = getc (input_FILE);
*tok++ = c;
}
while (c > 0);
got++;
c = getc (input_FILE);
*tok++ = c;
}
while (c > 0);
return got - 2;
}
int
skip_past_00 (FILE *input_FILE)
{
int skipped = 0;
do
{
do
skipped++;
while (getc (input_FILE) > 0);
skipped++;
}
while (getc (input_FILE) > 0);
return skipped;
}
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