#define KDEBUG 0
/* vmsfunctions.c */

#include <stdio.h>
#include "make.h"
#ifdef __DECC
#include <starlet.h>
#endif
#include <descrip.h>
#include <rms.h>
#include <iodef.h>
#include <atrdef.h>
#include <fibdef.h>
#include "vmsdir.h"

DIR *opendir(char *dspec)
{
  static struct FAB *dfab;
  struct NAM *dnam;
  char *searchspec;

  if ((dfab = (struct FAB *)xmalloc(sizeof (struct FAB))) == NULL) {
    printf("Error mallocing for FAB\n");
    return(NULL);
  }
  if ((dnam = (struct NAM *)xmalloc(sizeof (struct NAM))) == NULL) {
    printf("Error mallocing for NAM\n");
    free(dfab);
    return(NULL);
  }
  if ((searchspec = (char *)xmalloc(MAXNAMLEN+1)) == NULL) {
    printf("Error mallocing for searchspec\n");
    free(dfab);
    free(dnam);
    return(NULL);
  }

  sprintf(searchspec,"%s*.*;",dspec);

  *dfab = cc$rms_fab;
  dfab->fab$l_fna = searchspec;
  dfab->fab$b_fns = strlen(searchspec);
  dfab->fab$l_nam = dnam;

  *dnam = cc$rms_nam;
  dnam->nam$l_esa = searchspec;
  dnam->nam$b_ess = MAXNAMLEN;

  if (!(sys$parse(dfab) & 1)) {
    free(dfab);
    free(dnam);
    free(searchspec);
    return(NULL);
  }

  return(dfab);
}

#include <ctype.h>
#define uppercasify(str) { char *tmp; for(tmp = (str); *tmp != '\0'; tmp++) if(islower(*tmp)) *tmp = toupper(*tmp); }

struct direct *readdir(DIR *dfd)
{
  static struct direct *dentry;
  static char resultspec[MAXNAMLEN+1];
  int i;

  if ((dentry = (struct direct *)xmalloc(sizeof (struct direct))) == NULL) {
    printf("Error mallocing for direct\n");
    return(NULL);
  }

  dfd->fab$l_nam->nam$l_rsa = resultspec;
  dfd->fab$l_nam->nam$b_rss = MAXNAMLEN;

  if (debug_flag)
    printf(".");

  if (!((i = sys$search(dfd)) & 1)) {
    if (debug_flag)
      printf("sys$search failed with %d\n", i);
    free(dentry);
    return(NULL);
  }

  dentry->d_off = 0;
  if (dfd->fab$l_nam->nam$w_fid == 0)
    dentry->d_fileno = 1;
  else dentry->d_fileno = dfd->fab$l_nam->nam$w_fid[0]
			 +dfd->fab$l_nam->nam$w_fid[1]<<16;
  dentry->d_reclen = sizeof (struct direct);
/*
  if (!strcmp(dfd->fab$l_nam->nam$l_type,".DIR"))
    dentry->d_namlen = dfd->fab$l_nam->nam$b_name;
  else
*/
    dentry->d_namlen = dfd->fab$l_nam->nam$b_name+dfd->fab$l_nam->nam$b_type;
  strncpy(dentry->d_name,dfd->fab$l_nam->nam$l_name,dentry->d_namlen);
  dentry->d_name[dentry->d_namlen] = '\0';
  uppercasify(dentry->d_name);
/*  uvUnFixRCSSeparator(dentry->d_name);*/

  return(dentry);
}

closedir(DIR *dfd)
{
  if (dfd != NULL) {
    if (dfd->fab$l_nam != NULL)
      free(dfd->fab$l_nam->nam$l_esa);
    free(dfd->fab$l_nam);
    free(dfd);
  }
}

char *getwd(char *cwd)
{
  static char buf[512];

    if (cwd)
      return(getcwd(cwd,512));
    else
      return(getcwd(buf,512));
}

int
vms_stat (name, buf)
     char *name;
     struct stat *buf;
{
  int status;
  int i;

  static struct FAB Fab;
  static struct NAM Nam;
  static struct fibdef Fib; /* short fib */
  static struct dsc$descriptor FibDesc =
    {sizeof(Fib), DSC$K_DTYPE_Z, DSC$K_CLASS_S, (char *)&Fib};
  static struct dsc$descriptor_s DevDesc =
    {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, &Nam.nam$t_dvi[1]};
  static char EName[NAM$C_MAXRSS];
  static char RName[NAM$C_MAXRSS];
  static struct dsc$descriptor_s FileName =
    {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
  static struct dsc$descriptor_s string =
    {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};  
  static unsigned long Rdate[2];
  static unsigned long Cdate[2];
  static struct atrdef Atr[] = {  
    {sizeof(Rdate),ATR$C_REVDATE,&Rdate[0]}, /* Revision date */
    {sizeof(Cdate),ATR$C_CREDATE,&Cdate[0]}, /* Creation date */
    {0,0,0}
  };
  static short int DevChan;
  static short int iosb[4];

  name = vmsify (name, 0);

  /* initialize RMS structures, we need a NAM to retrieve the FID */
  Fab = cc$rms_fab;
  Fab.fab$l_fna = name ; /* name of file */
  Fab.fab$b_fns = strlen(name);
  Fab.fab$l_nam = &Nam; /* FAB has an associated NAM */
      
  Nam = cc$rms_nam;
  Nam.nam$l_esa = EName; /* expanded filename */
  Nam.nam$b_ess = sizeof(EName);
  Nam.nam$l_rsa = RName; /* resultant filename */
  Nam.nam$b_rss = sizeof(RName);

  /* do $PARSE and $SEARCH here */
  status = sys$parse(&Fab);
  if (!(status & 1))
    return -1;

  DevDesc.dsc$w_length = Nam.nam$t_dvi[0];
  status = sys$assign(&DevDesc,&DevChan,0,0);
  if (!(status & 1))
    return -1;

  FileName.dsc$a_pointer = Nam.nam$l_name;
  FileName.dsc$w_length = Nam.nam$b_name+Nam.nam$b_type+Nam.nam$b_ver;
  
  /* Initialize the FIB */
  for (i=0;i<3;i++)
    {
#if __DECC
      Fib.fib$w_fid[i]=Nam.nam$w_fid[i];
      Fib.fib$w_did[i]=Nam.nam$w_did[i];
#else
      Fib.fib$r_fid_overlay.fib$w_fid[i]=Nam.nam$w_fid[i];
      Fib.fib$r_did_overlay.fib$w_did[i]=Nam.nam$w_did[i];
#endif
    }

  status = sys$qiow(0,DevChan,IO$_ACCESS,&iosb,0,0,
                        &FibDesc,&FileName,0,0,&Atr,0);
  sys$dassgn (DevChan);
  if (!(status & 1))
    return -1;
  status = iosb[0];
  if (!(status & 1))
    return -1;

  status = stat (name, buf);
  if (status)
    return -1;

  buf->st_mtime = ((Rdate[0]>>24) & 0xff) + ((Rdate[1]<<8) & 0xffffff00);
  buf->st_ctime = ((Cdate[0]>>24) & 0xff) + ((Cdate[1]<<8) & 0xffffff00);
  return 0;
}

char *
cvt_time(tval)
  unsigned long tval;
{
  static long int date[2];
  static char str[27];
  static struct dsc$descriptor date_str =
    {26, DSC$K_DTYPE_T, DSC$K_CLASS_S, str};

  date[0] = (tval & 0xff) << 24;
  date[1] = ((tval>>8) & 0xffffff);

  if ((date[0]==0) && (date[1]==0))
    return("never");
 
  sys$asctim(0,&date_str,date,0);
  str[26]='\0';

  return(str);
}
  
/* EOF */