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/*
* DIRECTORY.C - VMS emulation routines for UNIX Directory
* callable routines
*
* Author: Patrick L. Mahan
* Location: TGV, Inc
* Date: 19-November-1991
*
* Purpose: Provides emulation of the BSD directory routines
* which are used by some of the X11 R4 release
* software.
*
* Side effects: This is only a partial emulation. Not all of
* the required information is passed to the user.
*
* Modification History
*
* Date | Who | Version | History
* ------------+-----------+---------------+----------------------------
* 19-Nov-1991 | PLM | 1.0 | First Write
* 20-Apr-1992 | PLM | 1.1 | Added validation check for
* | | | for the directory
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rmsdef.h>
#include <descrip.h>
#include <lib$routines.h>
#include "vms_dirent.h"
#define NOWILD 0x00000001
#define MULTIPLE 0x00000002
static unsigned long context = 0;
static struct dsc$descriptor_s *create_descriptor ( name )
char *name;
{
struct dsc$descriptor_s *retdescrip;
retdescrip = (struct dsc$descriptor_s *)calloc(1, sizeof(struct dsc$descriptor_s));
if (retdescrip == NULL) return ((struct dsc$descriptor_s *)NULL);
retdescrip->dsc$b_dtype = DSC$K_DTYPE_T;
retdescrip->dsc$b_class = DSC$K_CLASS_S;
retdescrip->dsc$w_length = strlen(name);
retdescrip->dsc$a_pointer = name;
return (retdescrip);
}
static int Check_Directory( dirname )
char *dirname;
{
static char *tmpdir, *cp;
FILE *tfp;
int status;
status = 1;
tmpdir = calloc(strlen(dirname)+15,sizeof(char));
strcpy(tmpdir, dirname);
cp = strrchr(tmpdir, '.');
if (cp != NULL) {
*cp = ']';
cp = strrchr(tmpdir, ']');
*cp = '.';
strcat(tmpdir, "dir");
}
else {
char *tmp1;
tmp1 = calloc(strlen(dirname)+1,sizeof(char));
cp = strchr(tmpdir, '[');
cp++;
strcpy(tmp1, cp);
cp = strrchr(tmp1, ']');
*cp = '\0';
cp = strchr(tmpdir, '[');
cp++;
*cp = '\0';
strcat(tmpdir, "000000]");
strcat(tmpdir, tmp1);
strcat(tmpdir, ".dir");
}
tfp = fopen(tmpdir, "r");
if (tfp == NULL) status = 0;
fclose(tfp);
return (status);
}
DIR *opendir( dirname )
char *dirname;
{
DIR *retdir;
struct dsc$descriptor_s filedescriptor;
char *filepathname;
retdir = (DIR *) calloc(1, sizeof(DIR));
if (retdir == NULL) return ((DIR *)NULL);
if (!Check_Directory(dirname)) return ((DIR *)NULL);
filepathname = (char *)calloc(256, sizeof(char));
strcpy(filepathname, dirname);
strcat(filepathname, "*.*.*");
retdir->dd_fd = (unsigned long) create_descriptor(filepathname);
retdir->dd_loc = 0;
retdir->dd_size = strlen(filepathname);
retdir->dd_bsize = 0;
retdir->dd_off = 0;
retdir->dd_buf = filepathname;
return (retdir);
}
struct dirent *readdir( dirp )
DIR *dirp;
{
static struct dirent *retdirent;
struct dsc$descriptor_s retfilenamedesc;
struct dsc$descriptor_s searchpathdesc = *((struct dsc$descriptor_s *)dirp->dd_fd);
char retfilename[256];
char *sp;
unsigned long istatus;
unsigned long rms_status;
unsigned long flags;
retdirent = (struct dirent *)NULL;
flags = MULTIPLE;
retfilenamedesc.dsc$b_dtype = DSC$K_DTYPE_T;
retfilenamedesc.dsc$b_class = DSC$K_CLASS_S;
retfilenamedesc.dsc$w_length = 255;
retfilenamedesc.dsc$a_pointer= retfilename;
istatus = lib$find_file (&searchpathdesc,
&retfilenamedesc,
&dirp->dd_loc,
0, 0,
&rms_status,
&flags);
if (!(istatus & 1) && (istatus != RMS$_NMF) && (istatus != RMS$_FNF))
{
lib$signal (istatus);
return (retdirent);
}
else if ((istatus == RMS$_NMF) || (istatus == RMS$_FNF))
return (retdirent);
retfilename[retfilenamedesc.dsc$w_length] = '\0';
sp = strchr(retfilename, ' ');
if (sp != NULL) *sp = '\0';
sp = strrchr(retfilename, ']');
if (sp != NULL)
sp++;
else
sp = retfilename;
retdirent = (struct dirent *)calloc(1, sizeof(struct dirent));
strcpy(retdirent->d_name, sp);
retdirent->d_namlen = strlen(sp);
retdirent->d_fileno = 0;
retdirent->d_off = 0;
retdirent->d_reclen = DIRSIZ(retdirent);
return (retdirent);
}
long telldir( dirp )
DIR *dirp;
{
return(0);
}
void seekdir( dirp, loc )
DIR *dirp;
int loc;
{
return;
}
void rewinddir( dirp )
DIR *dirp;
{
lib$find_file_end (&dirp->dd_loc);
}
void closedir( dirp )
DIR *dirp;
{
lib$find_file_end (&dirp->dd_loc);
cfree ((void *) dirp->dd_fd);
cfree (dirp->dd_buf);
cfree (dirp);
}
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