src/os_vms.c

   1 /* vi:set ts=8 sts=4 sw=4:
   2  *
   3  * VIM - Vi IMproved            by Bram Moolenaar
   4  * VMS port                     by Henk Elbers
   5  * VMS deport                   by Zoltan Arpadffy
   6  *
   7  * Do ":help uganda"  in Vim to read copying and usage conditions.
   8  * Do ":help credits" in Vim to see a list of people who contributed.
   9  * See README.txt for an overview of the Vim source code.
  10  */
  11
  12 #include        "vim.h"
  13
  14 typedef struct
  15 {
  16     char        class;
  17     char        type;
  18     short       width;
  19     union
  20     {
  21         struct
  22         {
  23             char        _basic[3];
  24             char        length;
  25         }       y;
  26         int     basic;
  27     }   x;
  28     int         extended;
  29 }       TT_MODE;
  30
  31 typedef struct
  32 {
  33     short       buflen;
  34     short       itemcode;
  35     char        *bufadrs;
  36     int         *retlen;
  37 }       ITEM;
  38
  39 typedef struct
  40 {
  41     ITEM        equ;
  42     int         nul;
  43 }       ITMLST1;
  44
  45 typedef struct
  46 {
  47     ITEM        index;
  48     ITEM        string;
  49     int nul;
  50 }       ITMLST2;
  51
  52 static TT_MODE  orgmode;
  53 static short    iochan;                 /* TTY I/O channel */
  54 static short    iosb[4];                /* IO status block */
  55
  56 static int vms_match_num = 0;
  57 static int vms_match_free = 0;
  58 static char_u **vms_fmatch = NULL;
  59 static char *Fspec_Rms;                /* rms file spec, passed implicitly between routines */
  60
  61
  62
  63 static TT_MODE  get_tty __ARGS((void));
  64 static void     set_tty __ARGS((int row, int col));
  65
  66 #define EXPL_ALLOC_INC 64
  67
  68 #define EQN(S1,S2,LN) (strncmp(S1,S2,LN) == 0)
  69 #define SKIP_FOLLOWING_SLASHES(Str) while (Str[1] == '/') ++Str
  70
  71
  72 /*
  73  *      vul_desc        vult een descriptor met een string en de lengte
  74  *                      hier van.
  75  */
  76     static void
  77 vul_desc(DESC *des, char *str)
  78 {
  79     des->dsc$b_dtype = DSC$K_DTYPE_T;
  80     des->dsc$b_class = DSC$K_CLASS_S;
  81     des->dsc$a_pointer = str;
  82     des->dsc$w_length = str ? strlen(str) : 0;
  83 }
  84
  85 /*
  86  *      vul_item        vult een item met een aantal waarden
  87  */
  88     static void
  89 vul_item(ITEM *itm, short len, short cod, char *adr, int *ret)
  90 {
  91     itm->buflen   = len;
  92     itm->itemcode = cod;
  93     itm->bufadrs  = adr;
  94     itm->retlen   = ret;
  95 }
  96
  97     void
  98 mch_settmode(int tmode)
  99 {
 100     int status;
 101
 102     if ( tmode == TMODE_RAW )
 103         set_tty(0, 0);
 104     else{
 105         switch (orgmode.width)
 106         {
 107             case 132:   OUT_STR_NF((char_u *)"\033[?3h\033>");  break;
 108             case 80:    OUT_STR_NF((char_u *)"\033[?3l\033>");  break;
 109             default:    break;
 110         }
 111         out_flush();
 112         status = sys$qiow(0, iochan, IO$_SETMODE, iosb, 0, 0,
 113                                           &orgmode, sizeof(TT_MODE), 0,0,0,0);
 114         if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
 115             return;
 116         (void)sys$dassgn(iochan);
 117         iochan = 0;
 118     }
 119 }
 120
 121     static void
 122 set_tty(int row, int col)
 123 {
 124     int             status;
 125     TT_MODE         newmode;            /* New TTY mode bits            */
 126     static short    first_time = TRUE;
 127
 128     if (first_time)
 129     {
 130         orgmode = get_tty();
 131         first_time = FALSE;
 132     }
 133     newmode = get_tty();
 134     if (col)
 135         newmode.width            = col;
 136     if (row)
 137         newmode.x.y.length       = row;
 138     newmode.x.basic             |= (TT$M_NOECHO | TT$M_HOSTSYNC);
 139     newmode.x.basic             &= ~TT$M_TTSYNC;
 140     newmode.extended            |= TT2$M_PASTHRU;
 141     status = sys$qiow(0, iochan, IO$_SETMODE, iosb, 0, 0,
 142                           &newmode, sizeof(newmode), 0, 0, 0, 0);
 143     if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
 144         return;
 145 }
 146
 147     static TT_MODE
 148 get_tty(void)
 149 {
 150
 151     static $DESCRIPTOR(odsc,"SYS$OUTPUT");   /* output descriptor */
 152
 153     int         status;
 154     TT_MODE     tt_mode;
 155
 156     if (!iochan)
 157         status = sys$assign(&odsc,&iochan,0,0);
 158
 159     status = sys$qiow(0, iochan, IO$_SENSEMODE, iosb, 0, 0,
 160                       &tt_mode, sizeof(tt_mode), 0, 0, 0, 0);
 161     if (status != SS$_NORMAL || (iosb[0] & 0xFFFF) != SS$_NORMAL)
 162     {
 163         tt_mode.width           = 0;
 164         tt_mode.type            = 0;
 165         tt_mode.class           = 0;
 166         tt_mode.x.basic         = 0;
 167         tt_mode.x.y.length      = 0;
 168         tt_mode.extended        = 0;
 169     }
 170     return(tt_mode);
 171 }
 172
 173 /*
 174  * Get the current window size in Rows and Columns.
 175  */
 176     int
 177 mch_get_shellsize(void)
 178 {
 179     TT_MODE     tmode;
 180
 181     tmode = get_tty();                  /* get size from VMS    */
 182     Columns = tmode.width;
 183     Rows = tmode.x.y.length;
 184     return OK;
 185 }
 186
 187 /*
 188  * Try to set the window size to Rows and new_Columns.
 189  */
 190     void
 191 mch_set_shellsize(void)
 192 {
 193     set_tty(Rows, Columns);
 194     switch (Columns)
 195     {
 196         case 132:       OUT_STR_NF((char_u *)"\033[?3h\033>");  break;
 197         case 80:        OUT_STR_NF((char_u *)"\033[?3l\033>");  break;
 198         default:        break;
 199     }
 200     out_flush();
 201     screen_start();
 202 }
 203
 204     char_u *
 205 mch_getenv(char_u *lognam)
 206 {
 207     DESC                d_file_dev, d_lognam  ;
 208     static char         buffer[LNM$C_NAMLENGTH+1];
 209     char_u              *cp = NULL;
 210     unsigned long       attrib;
 211     int                 lengte = 0, dum = 0, idx = 0;
 212     ITMLST2             itmlst;
 213     char                *sbuf = NULL;
 214
 215     vul_desc(&d_lognam, (char *)lognam);
 216     vul_desc(&d_file_dev, "LNM$FILE_DEV");
 217     attrib = LNM$M_CASE_BLIND;
 218     vul_item(&itmlst.index, sizeof(int), LNM$_INDEX, (char *)&idx, &dum);
 219     vul_item(&itmlst.string, LNM$C_NAMLENGTH, LNM$_STRING, buffer, &lengte);
 220     itmlst.nul  = 0;
 221     if (sys$trnlnm(&attrib, &d_file_dev, &d_lognam, NULL,&itmlst) == SS$_NORMAL)
 222     {
 223         buffer[lengte] = '\0';
 224         if (cp = (char_u *)alloc((unsigned)(lengte+1)))
 225             strcpy((char *)cp, buffer);
 226         return(cp);
 227     }
 228     else if ((sbuf = getenv((char *)lognam)))
 229     {
 230         lengte = strlen(sbuf) + 1;
 231         cp = (char_u *)malloc((size_t)lengte);
 232         if (cp)
 233             strcpy((char *)cp, sbuf);
 234         return cp;
 235     }
 236     else
 237         return(NULL);
 238 }
 239
 240 /*
 241  *      mch_setenv      VMS version of setenv()
 242  */
 243     int
 244 mch_setenv(char *var, char *value, int x)
 245 {
 246     int         res, dum;
 247     long        attrib = 0L;
 248     char        acmode = PSL$C_SUPER;   /* needs SYSNAM privilege */
 249     DESC        tabnam, lognam;
 250     ITMLST1     itmlst;
 251
 252     vul_desc(&tabnam, "LNM$JOB");
 253     vul_desc(&lognam, var);
 254     vul_item(&itmlst.equ, value ? strlen(value) : 0, value ? LNM$_STRING : 0,
 255             value, &dum);
 256     itmlst.nul  = 0;
 257     res = sys$crelnm(&attrib, &tabnam, &lognam, &acmode, &itmlst);
 258     return((res == 1) ? 0 : -1);
 259 }
 260
 261     int
 262 vms_sys(char *cmd, char *out, char *inp)
 263 {
 264     DESC        cdsc, odsc, idsc;
 265     long        status;
 266
 267     if (cmd)
 268         vul_desc(&cdsc, cmd);
 269     if (out)
 270         vul_desc(&odsc, out);
 271     if (inp)
 272         vul_desc(&idsc, inp);
 273
 274     lib$spawn(cmd ? &cdsc : NULL,               /* command string */
 275               inp ? &idsc : NULL,               /* input file */
 276               out ? &odsc : NULL,               /* output file */
 277               0, 0, 0, &status, 0, 0, 0, 0, 0, 0);
 278     return status;
 279 }
 280
 281 /*
 282  * Convert VMS system() or lib$spawn() return code to Unix-like exit value.
 283  */
 284     int
 285 vms_sys_status(int status)
 286 {
 287     if (status != SS$_NORMAL && (status & STS$M_SUCCESS) == 0)
 288         return status;          /* Command failed. */
 289     return 0;
 290 }
 291
 292 /*
 293  * vms_read()
 294  * function for low level char input
 295  *
 296  * Returns: input length
 297  */
 298     int
 299 vms_read(char *inbuf, size_t nbytes)
 300 {
 301     int         status, function, len;
 302     TT_MODE     tt_mode;
 303     ITEM        itmlst[2];     /* terminates on everything */
 304     static long trm_mask[8] = {-1, -1, -1, -1, -1, -1, -1, -1};
 305
 306     /* whatever happened earlier we need an iochan here */
 307     if (!iochan)
 308         tt_mode = get_tty();
 309
 310     /* important: clean the inbuf */
 311     memset(inbuf, 0, nbytes);
 312
 313     /* set up the itemlist for the first read */
 314     vul_item(&itmlst[0], 0, TRM$_MODIFIERS,
 315          (char *)( TRM$M_TM_NOECHO  | TRM$M_TM_NOEDIT    |
 316                    TRM$M_TM_NOFILTR | TRM$M_TM_TRMNOECHO |
 317                    TRM$M_TM_NORECALL) , 0);
 318     vul_item(&itmlst[1], sizeof(trm_mask), TRM$_TERM, (char *)&trm_mask, 0);
 319
 320     /* wait forever for a char */
 321     function = (IO$_READLBLK | IO$M_EXTEND);
 322     status = sys$qiow(0, iochan, function, &iosb, 0, 0,
 323                          inbuf, nbytes-1, 0, 0, &itmlst, sizeof(itmlst));
 324     len = strlen(inbuf); /* how many chars we got? */
 325
 326     /* read immediately the rest in the IO queue   */
 327     function = (IO$_READLBLK | IO$M_TIMED | IO$M_ESCAPE | IO$M_NOECHO | IO$M_NOFILTR);
 328     status = sys$qiow(0, iochan, function, &iosb, 0, 0,
 329                          inbuf+len, nbytes-1-len, 0, 0, 0, 0);
 330
 331     len = strlen(inbuf); /* return the total length */
 332
 333     return len;
 334 }
 335
 336 /*
 337  * vms_wproc() is called for each matching filename by decc$to_vms().
 338  * We want to save each match for later retrieval.
 339  *
 340  * Returns:  1 - continue finding matches
 341  *           0 - stop trying to find any further matches
 342  */
 343     static int
 344 vms_wproc(char *name, int val)
 345 {
 346     int i;
 347     int nlen;
 348     static int vms_match_alloced = 0;
 349
 350     if (val != DECC$K_FILE) /* Directories and foreign non VMS files are not
 351                                counting  */
 352         return 1;
 353
 354     if (vms_match_num == 0) {
 355         /* first time through, setup some things */
 356         if (NULL == vms_fmatch) {
 357             vms_fmatch = (char_u **)alloc(EXPL_ALLOC_INC * sizeof(char *));
 358             if (!vms_fmatch)
 359                 return 0;
 360             vms_match_alloced = EXPL_ALLOC_INC;
 361             vms_match_free = EXPL_ALLOC_INC;
 362         }
 363         else {
 364             /* re-use existing space */
 365             vms_match_free = vms_match_alloced;
 366         }
 367     }
 368
 369     vms_remove_version(name);
 370
 371     /* convert filename to lowercase */
 372     nlen = strlen(name);
 373     for (i = 0; i < nlen; i++)
 374         name[i] = TOLOWER_ASC(name[i]);
 375
 376     /* if name already exists, don't add it */
 377     for (i = 0; i<vms_match_num; i++) {
 378         if (0 == STRCMP((char_u *)name,vms_fmatch[i]))
 379             return 1;
 380     }
 381     if (--vms_match_free == 0) {
 382         /* add more space to store matches */
 383         vms_match_alloced += EXPL_ALLOC_INC;
 384         vms_fmatch = (char_u **)realloc(vms_fmatch,
 385                 sizeof(char **) * vms_match_alloced);
 386         if (!vms_fmatch)
 387             return 0;
 388         vms_match_free = EXPL_ALLOC_INC;
 389     }
 390     vms_fmatch[vms_match_num] = vim_strsave((char_u *)name);
 391
 392     ++vms_match_num;
 393     return 1;
 394 }
 395
 396 /*
 397  *      mch_expand_wildcards    this code does wild-card pattern
 398  *                              matching NOT using the shell
 399  *
 400  *      return OK for success, FAIL for error (you may loose some
 401  *      memory) and put an error message in *file.
 402  *
 403  *      num_pat    number of input patterns
 404  *      pat        array of pointers to input patterns
 405  *      num_file   pointer to number of matched file names
 406  *      file       pointer to array of pointers to matched file names
 407  *
 408  */
 409     int
 410 mch_expand_wildcards(int num_pat, char_u **pat, int *num_file, char_u ***file, int flags)
 411 {
 412     int         i, j = 0, cnt = 0;
 413     char        *cp;
 414     char_u      buf[MAXPATHL];
 415     int         dir;
 416     int files_alloced, files_free;
 417
 418     *num_file = 0;                      /* default: no files found      */
 419     files_alloced = EXPL_ALLOC_INC;
 420     files_free = EXPL_ALLOC_INC;
 421     *file = (char_u **) alloc(sizeof(char_u **) * files_alloced);
 422     if (*file == NULL)
 423     {
 424         *num_file = 0;
 425         return FAIL;
 426     }
 427     for (i = 0; i < num_pat; i++)
 428     {
 429         /* expand environment var or home dir */
 430         if (vim_strchr(pat[i],'$') || vim_strchr(pat[i],'~'))
 431             expand_env(pat[i],buf,MAXPATHL);
 432         else
 433             STRCPY(buf,pat[i]);
 434
 435         vms_match_num = 0; /* reset collection counter */
 436         cnt = decc$to_vms(decc$translate_vms(vms_fixfilename(buf)), vms_wproc, 1, 0);
 437                                                       /* allow wild, no dir */
 438         if (cnt > 0)
 439             cnt = vms_match_num;
 440
 441         if (cnt < 1)
 442             continue;
 443
 444         for (i = 0; i < cnt; i++)
 445         {
 446             /* files should exist if expanding interactively */
 447             if (!(flags & EW_NOTFOUND) && mch_getperm(vms_fmatch[i]) < 0)
 448                 continue;
 449
 450             /* do not include directories */
 451             dir = (mch_isdir(vms_fmatch[i]));
 452             if (( dir && !(flags & EW_DIR)) || (!dir && !(flags & EW_FILE)))
 453                 continue;
 454
 455             /* Skip files that are not executable if we check for that. */
 456             if (!dir && (flags & EW_EXEC) && !mch_can_exe(vms_fmatch[i]))
 457                 continue;
 458
 459             /* allocate memory for pointers */
 460             if (--files_free < 1)
 461             {
 462                 files_alloced += EXPL_ALLOC_INC;
 463                 *file = (char_u **)realloc(*file,
 464                     sizeof(char_u **) * files_alloced);
 465                 if (*file == NULL)
 466                 {
 467                     *file = (char_u **)"";
 468                     *num_file = 0;
 469                     return(FAIL);
 470                 }
 471                 files_free = EXPL_ALLOC_INC;
 472             }
 473
 474             (*file)[*num_file++] = vms_fmatch[i];
 475         }
 476     }
 477     return OK;
 478 }
 479
 480     int
 481 mch_expandpath(garray_T *gap, char_u *path, int flags)
 482 {
 483     int         i,cnt = 0;
 484     char        *cp;
 485     vms_match_num = 0;
 486
 487     cnt = decc$to_vms(decc$translate_vms(vms_fixfilename(path)), vms_wproc, 1, 0);
 488                                                       /* allow wild, no dir */
 489     if (cnt > 0)
 490         cnt = vms_match_num;
 491     for (i = 0; i < cnt; i++)
 492     {
 493         if (mch_getperm(vms_fmatch[i]) >= 0) /* add existing file */
 494             addfile(gap, vms_fmatch[i], flags);
 495     }
 496     return cnt;
 497 }
 498
 499 /*
 500  * attempt to translate a mixed unix-vms file specification to pure vms
 501  */
 502     static void
 503 vms_unix_mixed_filespec(char *in, char *out)
 504 {
 505     char *lastcolon;
 506     char *end_of_dir;
 507     char ch;
 508     int len;
 509
 510     /* copy vms filename portion up to last colon
 511      * (node and/or disk)
 512      */
 513     lastcolon = strrchr(in, ':');   /* find last colon */
 514     if (lastcolon != NULL) {
 515         len = lastcolon - in + 1;
 516         strncpy(out, in, len);
 517         out += len;
 518         in += len;
 519     }
 520
 521     end_of_dir = NULL;  /* default: no directory */
 522
 523     /* start of directory portion */
 524     ch = *in;
 525     if ((ch == '[') || (ch == '/') || (ch == '<')) {    /* start of directory(s) ? */
 526         ch = '[';
 527         SKIP_FOLLOWING_SLASHES(in);
 528     } else if (EQN(in, "../", 3)) { /* Unix parent directory? */
 529         *out++ = '[';
 530         *out++ = '-';
 531         end_of_dir = out;
 532         ch = '.';
 533         in += 2;
 534         SKIP_FOLLOWING_SLASHES(in);
 535     } else {                /* not a special character */
 536         while (EQN(in, "./", 2)) {      /* Ignore Unix "current dir" */
 537             in += 2;
 538             SKIP_FOLLOWING_SLASHES(in);
 539     }
 540     if (strchr(in, '/') == NULL) {  /* any more Unix directories ? */
 541         strcpy(out, in);        /* No - get rest of the spec */
 542         return;
 543     } else {
 544         *out++ = '[';       /* Yes, denote a Vms subdirectory */
 545         ch = '.';
 546         --in;
 547         }
 548     }
 549
 550     /* if we get here, there is a directory part of the filename */
 551
 552     /* initialize output file spec */
 553     *out++ = ch;
 554     ++in;
 555
 556     while (*in != '\0') {
 557         ch = *in;
 558         if ((ch == ']') || (ch == '/') || (ch == '>') ) {       /* end of (sub)directory ? */
 559             end_of_dir = out;
 560             ch = '.';
 561             SKIP_FOLLOWING_SLASHES(in);
 562             }
 563         else if (EQN(in, "../", 3)) {   /* Unix parent directory? */
 564             *out++ = '-';
 565             end_of_dir = out;
 566             ch = '.';
 567             in += 2;
 568             SKIP_FOLLOWING_SLASHES(in);
 569             }
 570         else {
 571             while (EQN(in, "./", 2)) {  /* Ignore Unix "current dir" */
 572             end_of_dir = out;
 573             in += 2;
 574             SKIP_FOLLOWING_SLASHES(in);
 575             ch = *in;
 576             }
 577         }
 578
 579     /* Place next character into output file spec */
 580         *out++ = ch;
 581         ++in;
 582     }
 583
 584     *out = '\0';    /* Terminate output file spec */
 585
 586     if (end_of_dir != NULL) /* Terminate directory portion */
 587         *end_of_dir = ']';
 588 }
 589
 590
 591 /*
 592  * for decc$to_vms in vms_fixfilename
 593  */
 594     static int
 595 vms_fspec_proc(char *fil, int val)
 596 {
 597     strcpy(Fspec_Rms,fil);
 598     return(1);
 599 }
 600
 601 /*
 602  * change unix and mixed filenames to VMS
 603  */
 604     void *
 605 vms_fixfilename(void *instring)
 606 {
 607     static char         *buf = NULL;
 608     static size_t       buflen = 0;
 609     size_t              len;
 610
 611     /* get a big-enough buffer */
 612     len = strlen(instring) + 1;
 613     if (len > buflen)
 614     {
 615         buflen = len + 128;
 616         if (buf)
 617             buf = (char *)realloc(buf, buflen);
 618         else
 619             buf = (char *)calloc(buflen, sizeof(char));
 620     }
 621
 622 #ifdef DEBUG
 623      char                *tmpbuf = NULL;
 624      tmpbuf = (char *)calloc(buflen, sizeof(char));
 625      strcpy(tmpbuf, instring);
 626 #endif
 627
 628     Fspec_Rms = buf;                            /* for decc$to_vms */
 629
 630     if (strchr(instring,'/') == NULL)
 631         /* It is already a VMS file spec */
 632         strcpy(buf, instring);
 633     else if (strchr(instring,'"') == NULL)      /* password in the path? */
 634     {
 635         /* Seems it is a regular file, let guess that it is pure Unix fspec */
 636         if (decc$to_vms(instring, vms_fspec_proc, 0, 0) <= 0)
 637             /* No... it must be mixed */
 638             vms_unix_mixed_filespec(instring, buf);
 639     }
 640     else
 641         /* we have a password in the path   */
 642         /* decc$ functions can not handle   */
 643         /* this is our only hope to resolv  */
 644         vms_unix_mixed_filespec(instring, buf);
 645
 646     return buf;
 647 }
 648
 649 /*
 650  * Remove version number from file name
 651  * we need it in some special cases as:
 652  * creating swap file name and writing new file
 653  */
 654     void
 655 vms_remove_version(void * fname)
 656 {
 657     char_u      *cp;
 658     char_u      *fp;
 659
 660     if ((cp = vim_strchr( fname, ';')) != NULL) /* remove version */
 661         *cp = '\0';
 662     else if ((cp = vim_strrchr( fname, '.')) != NULL )
 663     {
 664         if      ((fp = vim_strrchr( fname, ']')) != NULL ) {;}
 665         else if ((fp = vim_strrchr( fname, '>')) != NULL ) {;}
 666         else fp = fname;
 667
 668         while ( *fp != '\0' && fp < cp )
 669             if ( *fp++ == '.' )
 670                 *cp = '\0';
 671     }
 672     return ;
 673 }