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doschk.c
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C/C++ Source or Header
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1996-09-28
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11KB
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480 lines
/*
* doschk - check filenames for DOS (and SYSV) compatibility
*
* Copyright (C) 1993 DJ Delorie
*
* 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; if not, write to: The Free Software Foundation,
* Inc.; 675 Mass Ave. Cambridge, MA 02139, USA.
*
* This program is intended as a utility to help software developers
* ensure that their source file names are distinguishable on MS-DOS and
* 14-character SYSV platforms. To perform this task, doschk reads a
* list of filenames and produces a report of all the conflicts that
* would arise if the files were transferred to a MS-DOS or SYSV
* platform. It also reports any file names that would conflict with
* MS-DOS device names.
*
* To use this program, you must feed it a list of filenames in this
* format:
*
* dir
* dir/file1.ext
* dir/file2.exe
* dir/dir2
* dir/dir2/file3.ext
*
* If the list does not include the directory-only lines (like dir/dir2)
* then their names will not be checked for uniqueness, else they will
* be. Typical uses of this program are like these:
*
* find . -print | doschk
* tar tf file.tar | doschk
*
* If this program produces no output, then all your files are MS-DOS
* compatible. Any output messages are designed to be self-explanatory
* and indicate cases where the files will not transfer to MS-DOS without
* problems.
*
*/
#include <stdio.h>
#include <ctype.h>
#include <string.h>
extern char *malloc ();
typedef struct ENT
{
struct ENT *next;
char *dos_name;
char *full_name;
char *path;
int tagged;
} ENT;
/*
* List of filenames in MSDOG that are special devices.
* Not all of these are problems on all MSLOSS systems, but most would not
* work on most of them.
*/
static char *dos_special_names[] =
{
"NUL",
"CON",
"PRN",
"AUX",
"COM1",
"COM2",
"COM3",
"COM4",
"LPT1",
"LPT2",
"LPT3",
"MS$MOUSE",
"EMMXXXX0",
"XMSXXXX0",
"SMARTAAR",
"SETVERXX",
NULL
} ;
ENT *eroot = 0;
int first_inv = 1;
int first_msg = 1;
/****************************************************************\
* Utility routines *
\****************************************************************/
void
invalid_msg ()
{
if (first_inv)
{
if (first_msg)
first_msg = 0;
else
putchar ('\n');
printf ("The following files are not valid DOS file names:\n");
first_inv = 0;
}
}
char *
xmalloc (size)
int size;
{
char *s;
if (size == 0)
return NULL;
s = (char *) malloc (size);
if (s == NULL)
{
fprintf (stderr, "Virtual memory exhausted.\n");
exit (1);
}
return s;
}
ENT *
alloc_ent ()
{
ENT *rv = (ENT *) xmalloc (sizeof (ENT));
memset (rv, 0, sizeof (ENT));
return rv;
}
void
fill_ent (ent, path)
ENT *ent;
char *path;
{
char *first = path;
char *null = path + strlen (path);
char *last_slash = strrchr (path, '/');
char *cp, *dp;
int dots_seen, chars_seen;
if (last_slash + 1 == null)
{
*--null = '\0';
last_slash = strrchr (path, '/');
}
if (!last_slash)
{
last_slash = first - 1;
}
if (null - last_slash < 13)
ent->dos_name = (char *) xmalloc (null - last_slash);
else
ent->dos_name = (char *) xmalloc (13);
ent->full_name = (char *) xmalloc (null - last_slash);
ent->path = (char *) xmalloc (last_slash - first + 1);
strcpy (ent->full_name, last_slash + 1);
if (last_slash > first)
{
strncpy (ent->path, first, last_slash - first);
ent->path[last_slash - first] = '\0';
}
else
ent->path = "\0";
cp = last_slash + 1;
dp = ent->dos_name;
dots_seen = 0;
chars_seen = 0;
while (1)
{
if (!*cp)
break;
switch (*cp)
{
case '.':
if (cp == last_slash + 1 && strcmp (last_slash + 1, "."))
{
invalid_msg ();
printf ("%s - file name cannot start with dot\n", path);
*dp = 0;
break;
}
if (dots_seen == 1)
{
/* If trailing dot, it will be ignored by MSDOG, so don't */
/* actually complain. */
if (*(cp + 1) != NULL)
{
invalid_msg ();
printf ("%s - too many dots\n", path);
}
*dp = '\0';
break;
}
*dp++ = '.';
chars_seen = 0;
dots_seen++;
break;
case '"':
case '*':
case '+':
case ',':
case ';':
case '<':
case '=':
case '>':
case '?':
case '[':
case '\\':
case ']':
case '|':
case ':':
invalid_msg ();
printf ("%s - invalid character `%c'\n", path, *cp);
*dp++ = '?';
chars_seen++;
break;
default:
if (dots_seen)
{
if (chars_seen >= 3)
break;
}
else if (chars_seen >= 8)
break;
if ((*cp <= ' ') || (*cp >= 0x7f))
{
invalid_msg ();
printf ("%s - invalid character `%c'\n", path, *cp);
*dp++ = '?';
chars_seen++;
break;
}
if (islower (*cp))
*dp++ = toupper (*cp);
else
*dp++ = *cp;
chars_seen++;
break;
}
cp++;
}
*dp++ = '\0';
}
int
compare_ent_dosname (e1, e2)
ENT **e1;
ENT **e2;
{
int r = strcmp ((*e1)->dos_name, (*e2)->dos_name);
if (r == 0)
r = strcmp ((*e1)->path, (*e2)->path);
if (r == 0)
r = strcmp ((*e1)->full_name, (*e2)->full_name);
return r;
}
int
compare_ent_fullname (e1, e2)
ENT **e1;
ENT **e2;
{
int r = strncmp ((*e1)->full_name, (*e2)->full_name, 14);
if (r == 0)
r = strcmp ((*e1)->path, (*e2)->path);
if (r == 0)
r = strcmp ((*e1)->full_name, (*e2)->full_name);
return r;
}
char *
mpath (ent)
ENT *ent;
{
static char buf[1024]; /* fixed sizes for buffers are bad! */
if (ent->path && ent->path[0])
sprintf (buf, "%s/%s", ent->path, ent->full_name);
else
return ent->full_name;
return buf;
}
/****************************************************************\
* List handling routines *
\****************************************************************/
void
add_ent (ent)
ENT *ent;
{
ent->next = eroot;
eroot = ent;
}
void
handle_input (line)
char *line;
{
ENT *ent = alloc_ent ();
fill_ent (ent, line);
add_ent (ent);
}
void
display_problems ()
{
ENT **elist, *ent;
int ecount, i, first, first_err;
char **dos_dev_name;
for (ecount = 0, ent = eroot; ent; ent = ent->next, ecount++);
elist = (ENT **) xmalloc (sizeof (ENT *) * ecount);
for (ecount = 0, ent = eroot; ent; ent = ent->next, ecount++)
elist[ecount] = ent;
qsort (elist, ecount, sizeof (ENT *), compare_ent_dosname);
first_err = 1;
for (i = 0; i < ecount; i++)
{
int elist_len = strlen (elist[i]->dos_name);
dos_dev_name = dos_special_names;
while (*dos_dev_name)
{
if ((strcmp (elist[i]->dos_name, *dos_dev_name) == 0)
|| ((*(elist[i]->dos_name + elist_len - 1) == '.')
&& (strncmp (elist[i]->dos_name, *dos_dev_name, elist_len - 2) == 0)))
{
if (first_err)
{
if (first_msg)
first_msg = 0;
else
putchar ('\n');
printf ("The following resolve to special DOS device names:\n");
first_err = 0;
}
printf ("%-14s : %s\n", elist[i]->dos_name, mpath (elist[i]));
break;
}
dos_dev_name++;
}
}
first = 1;
first_err = 1;
for (i = 0; i < ecount - 1; i++)
{
int elist1_len = strlen (elist[i + 1]->dos_name);
if (((strcmp (elist[i]->dos_name, elist[i + 1]->dos_name) == 0)
&& (strcmp (elist[i]->path, elist[i + 1]->path) == 0))
|| ((*(elist[i + 1]->dos_name + elist1_len - 1) == '.')
&& (strncmp (elist[i]->dos_name, elist[i + 1]->dos_name, elist1_len - 2) == 0)))
{
if (first_err)
{
if (first_msg)
first_msg = 0;
else
putchar ('\n');
printf ("The following resolve to the same DOS file names:\n");
first_err = 0;
}
if (first)
{
printf ("%-14s : %s\n", elist[i]->dos_name, mpath (elist[i]));
first = 0;
}
printf ("\t\t %s\n", mpath (elist[i + 1]));
}
else
first = 1;
}
qsort (elist, ecount, sizeof (ENT *), compare_ent_fullname);
first = 1;
first_err = 1;
for (i = 0; i < ecount - 1; i++)
{
if ((strncmp (elist[i]->full_name, elist[i + 1]->full_name, 14) == 0) &&
(strcmp (elist[i]->path, elist[i + 1]->path) == 0))
{
if (first_err)
{
if (first_msg)
first_msg = 0;
else
putchar ('\n');
printf ("The following resolve to the same SysV file names:\n");
first_err = 0;
}
if (first)
{
printf ("%.14s : %s\n", elist[i]->full_name, mpath (elist[i]));
first = 0;
elist[i]->tagged = 1;
}
printf ("\t\t %s\n", mpath (elist[i + 1]));
elist[i + 1]->tagged = 1;
}
else
first = 1;
}
first_err = 1;
for (i = 0; i < ecount; i++)
{
if ((strlen (elist[i]->full_name) > 14) && !elist[i]->tagged)
{
if (first_err)
{
if (first_msg)
first_msg = 0;
else
putchar ('\n');
printf ("The following file names are too long for SysV:\n");
first_err = 0;
}
printf ("%.14s : %s\n", elist[i]->full_name, mpath (elist[i]));
}
}
}
/****************************************************************\
* Main entry point *
\****************************************************************/
main (argc, argv)
int argc;
char **argv;
{
FILE *input = stdin;
if (argc > 1)
{
input = fopen (argv[1], "r");
if (!input)
{
perror (argv[1]);
exit (1);
}
}
while (1)
{
char line[500];
char *lp;
fgets (line, 500, input);
if (feof (input))
break;
lp = line + strlen (line);
while ((lp != line) && (*lp <= ' '))
lp--;
lp[1] = 0;
handle_input (line);
}
display_problems ();
return 0;
}
/* End of file */