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/*
* LEVEE, or Captain Video; A vi clone
*
* Copyright (c) 1982-2007 David L Parsons
* All rights reserved.
*
* Redistribution and use in source and binary forms, without or
* without modification, are permitted provided that the above
* copyright notice and this paragraph are duplicated in all such
* forms and that any documentation, advertising materials, and
* other materials related to such distribution and use acknowledge
* that the software was developed by David L Parsons (orc@pell.chi.il.us).
* My name may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE.
*/
/*
* dos interface for levee (Microsoft C)
*/
#include "levee.h"
#if OS_DOS
#include <glob.h>
#include <dos.h>
int PROC
min(a,b)
int a,b;
{
return (a>b) ? b : a;
}
int PROC
max(a,b)
int a,b;
{
return (a<b) ? b : a;
}
PROC
strput(s)
char *s;
{
write(1, s, strlen(s));
}
/* get a key, mapping certain control sequences
*/
PROC
getKey()
{
register c;
extern char _far crawcin();
c = crawcin();
if (c == 0 || c == 0xe0)
switch (c=crawcin()) {
case 'K': return LTARROW;
case 'M': return RTARROW;
case 'H': return UPARROW;
case 'P': return DNARROW;
case 'I': return 'U'-'@'; /* page-up */
case 'Q': return 'D'-'@'; /* page-down */
default : return 0;
}
return c;
}
/* don't allow interruptions to happen
*/
PROC
nointr()
{
extern void _cdecl _interrupt _far ignore_ctrlc();
_dos_setvect(0x23, ignore_ctrlc);
} /* nointr */
/* have ^C do what it usually does
*/
PROC
allowintr()
{
extern void _cdecl _interrupt _far intr_on_ctrlc();
_dos_setvect(0x23, intr_on_ctrlc);
} /* allowintr */
/*
* basename() returns the filename part of a pathname
*/
char *
basename(s)
register char *s;
{
register char *p = s;
for (p = s+strlen(s); p > s; --p)
if (p[-1] == '/' || p[-1] == '\\' || p[-1] == ':')
return p;
return s;
} /* basename */
/*
* glob() expands a wildcard, via calls to _dos_findfirst/_next()
* and pathname retention.
*/
char *
glob(path, dta)
char *path;
struct glob_t *dta;
{
static char path_bfr[256]; /* full pathname to return */
static char *file_part; /* points at file - for filling */
static char isdotpattern; /* looking for files starting with . */
static char isdotordotdot; /* special case . or .. */
static struct glob_t *dta_bfr; /* pointer to desired dta */
static struct find_t dird; /* DOS dta */
register st; /* status from _dos_findxxx */
if (path) {
/* when we start searching, save the path part of the filename in
* a safe place.
*/
strcpy(path_bfr, path);
file_part = basename(path_bfr);
/* set up initial parameters for DosFindFirst()
*/
dta_bfr = dta;
if (isdotpattern = (*file_part == '.'))
/* _dos_findfirst() magically expands . and .. into their
* directory names. Admittedly, there are cases where
* this can be useful, but this is not one of them. So,
* if we find that we're matching . and .., we just
* special-case ourselves into oblivion to get around
* this particular bit of DOS silliness.
*/
isdotordotdot = (file_part[1] == 0 || file_part[1] == '.');
else
isdotordotdot = 0;
st = _dos_findfirst(path, 0x16, &dird);
}
else
st = _dos_findnext(&dird);
while (st == 0) {
/* Unless the pattern has a leading ., don't include any file
* that starts with .
*/
if (dird.name[0] == '.' && !isdotpattern)
st = _dos_findnext(&dird);
else {
/* found a file - affix the path leading to it, then return
* a pointer to the (static) buffer holding the path+the name.
*/
strlwr(dird.name); /* DOS & OS/2 are case-insensitive */
if (dta_bfr) {
dta_bfr->wr_time = dird.wr_time;
dta_bfr->wr_date = dird.wr_date;
if (isdotordotdot)
strcpy(dta_bfr->name, file_part);
else {
strncpy(dta_bfr->name, dird.name, sizeof(dta_bfr->name)-1);
dta_bfr->name[sizeof(dta_bfr->name)-1] = 0;
}
dta_bfr->size = dird.size;
dta_bfr->attrib = dird.attrib;
}
if (!isdotordotdot)
strcpy(file_part, dird.name);
return path_bfr;
}
}
/* nothing matched
*/
if (path && isdotordotdot) {
/* must be at root, so statting dot will most likely fail. Fake a
* dta.
*/
if (dta_bfr) {
memset(dta_bfr, 0, sizeof *dta_bfr);
dta_bfr->attrib = 0x10;
dta_bfr->name[0] = '.';
}
return path_bfr;
}
return (char*)0;
} /* glob */
#endif /*OS_DOS*/
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