Fix typo in a comment
[MacVim.git] / src / os_vms.c
blob76a15ce2f51f87adcf02a041c72f8cb76ed39c67
1 /* vi:set ts=8 sts=4 sw=4:
3 * VIM - Vi IMproved by Bram Moolenaar
4 * VMS port by Henk Elbers
5 * VMS deport by Zoltan Arpadffy
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.
12 #include "vim.h"
14 typedef struct
16 char class;
17 char type;
18 short width;
19 union
21 struct
23 char _basic[3];
24 char length;
25 } y;
26 int basic;
27 } x;
28 int extended;
29 } TT_MODE;
31 typedef struct
33 short buflen;
34 short itemcode;
35 char *bufadrs;
36 int *retlen;
37 } ITEM;
39 typedef struct
41 ITEM equ;
42 int nul;
43 } ITMLST1;
45 typedef struct
47 ITEM index;
48 ITEM string;
49 int nul;
50 } ITMLST2;
52 static TT_MODE orgmode;
53 static short iochan; /* TTY I/O channel */
54 static short iosb[4]; /* IO status block */
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 */
63 static TT_MODE get_tty __ARGS((void));
64 static void set_tty __ARGS((int row, int col));
66 #define EXPL_ALLOC_INC 64
68 #define EQN(S1,S2,LN) (strncmp(S1,S2,LN) == 0)
69 #define SKIP_FOLLOWING_SLASHES(Str) while (Str[1] == '/') ++Str
73 * vul_desc vult een descriptor met een string en de lengte
74 * hier van.
76 static void
77 vul_desc(DESC *des, char *str)
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;
86 * vul_item vult een item met een aantal waarden
88 static void
89 vul_item(ITEM *itm, short len, short cod, char *adr, int *ret)
91 itm->buflen = len;
92 itm->itemcode = cod;
93 itm->bufadrs = adr;
94 itm->retlen = ret;
97 void
98 mch_settmode(int tmode)
100 int status;
102 if ( tmode == TMODE_RAW )
103 set_tty(0, 0);
104 else{
105 switch (orgmode.width)
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;
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$dassgn(iochan);
117 iochan = 0;
121 static void
122 set_tty(int row, int col)
124 int status;
125 TT_MODE newmode; /* New TTY mode bits */
126 static short first_time = TRUE;
128 if (first_time)
130 orgmode = get_tty();
131 first_time = FALSE;
133 newmode = get_tty();
134 if (col)
135 newmode.width = col;
136 if (row)
137 newmode.x.y.length = row;
138 newmode.x.basic |= (TT$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;
147 static TT_MODE
148 get_tty(void)
151 static $DESCRIPTOR(odsc,"SYS$OUTPUT"); /* output descriptor */
153 int status;
154 TT_MODE tt_mode;
156 if (!iochan)
157 status = sys$assign(&odsc,&iochan,0,0);
159 status = sys$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$_NORMAL)
163 tt_mode.width = 0;
164 tt_mode.type = 0;
165 tt_mode.class = 0;
166 tt_mode.x.basic = 0;
167 tt_mode.x.y.length = 0;
168 tt_mode.extended = 0;
170 return(tt_mode);
174 * Get the current window size in Rows and Columns.
177 mch_get_shellsize(void)
179 TT_MODE tmode;
181 tmode = get_tty(); /* get size from VMS */
182 Columns = tmode.width;
183 Rows = tmode.x.y.length;
184 return OK;
188 * Try to set the window size to Rows and new_Columns.
190 void
191 mch_set_shellsize(void)
193 set_tty(Rows, Columns);
194 switch (Columns)
196 case 132: OUT_STR_NF((char_u *)"\033[?3h\033>"); break;
197 case 80: OUT_STR_NF((char_u *)"\033[?3l\033>"); break;
198 default: break;
200 out_flush();
201 screen_start();
204 char_u *
205 mch_getenv(char_u *lognam)
207 DESC d_file_dev, d_lognam ;
208 static char buffer[LNM$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;
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$_NORMAL)
223 buffer[lengte] = '\0';
224 if (cp = (char_u *)alloc((unsigned)(lengte+1)))
225 strcpy((char *)cp, buffer);
226 return(cp);
228 else if ((sbuf = getenv((char *)lognam)))
230 lengte = strlen(sbuf) + 1;
231 cp = (char_u *)malloc((size_t)lengte);
232 if (cp)
233 strcpy((char *)cp, sbuf);
234 return cp;
236 else
237 return(NULL);
241 * mch_setenv VMS version of setenv()
244 mch_setenv(char *var, char *value, int x)
246 int res, dum;
247 long attrib = 0L;
248 char acmode = PSL$C_SUPER; /* needs SYSNAM privilege */
249 DESC tabnam, lognam;
250 ITMLST1 itmlst;
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$crelnm(&attrib, &tabnam, &lognam, &acmode, &itmlst);
258 return((res == 1) ? 0 : -1);
262 vms_sys(char *cmd, char *out, char *inp)
264 DESC cdsc, odsc, idsc;
265 long status;
267 if (cmd)
268 vul_desc(&cdsc, cmd);
269 if (out)
270 vul_desc(&odsc, out);
271 if (inp)
272 vul_desc(&idsc, inp);
274 lib$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;
282 * Convert VMS system() or lib$spawn() return code to Unix-like exit value.
285 vms_sys_status(int status)
287 if (status != SS$_NORMAL && (status & STS$M_SUCCESS) == 0)
288 return status; /* Command failed. */
289 return 0;
293 * vms_read()
294 * function for low level char input
296 * Returns: input length
299 vms_read(char *inbuf, size_t nbytes)
301 int status, function, len;
302 TT_MODE tt_mode;
303 ITEM itmlst[2]; /* terminates on everything */
304 static long trm_mask[8] = {-1, -1, -1, -1, -1, -1, -1, -1};
306 /* whatever happened earlier we need an iochan here */
307 if (!iochan)
308 tt_mode = get_tty();
310 /* important: clean the inbuf */
311 memset(inbuf, 0, nbytes);
313 /* set up the itemlist for the first read */
314 vul_item(&itmlst[0], 0, TRM$_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);
320 /* wait forever for a char */
321 function = (IO$_READLBLK | IO$M_EXTEND);
322 status = sys$qiow(0, iochan, function, &iosb, 0, 0,
323 inbuf, nbytes-1, 0, 0, &itmlst, sizeof(itmlst));
324 len = strlen(inbuf); /* how many chars we got? */
326 /* read immediately the rest in the IO queue */
327 function = (IO$_READLBLK | IO$M_TIMED | IO$M_ESCAPE | IO$M_NOECHO | IO$M_NOFILTR);
328 status = sys$qiow(0, iochan, function, &iosb, 0, 0,
329 inbuf+len, nbytes-1-len, 0, 0, 0, 0);
331 len = strlen(inbuf); /* return the total length */
333 return len;
337 * vms_wproc() is called for each matching filename by decc$to_vms().
338 * We want to save each match for later retrieval.
340 * Returns: 1 - continue finding matches
341 * 0 - stop trying to find any further matches
343 static int
344 vms_wproc(char *name, int val)
346 int i;
347 int nlen;
348 static int vms_match_alloced = 0;
350 if (val != DECC$K_FILE) /* Directories and foreign non VMS files are not
351 counting */
352 return 1;
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;
363 else {
364 /* re-use existing space */
365 vms_match_free = vms_match_alloced;
369 vms_remove_version(name);
371 /* convert filename to lowercase */
372 nlen = strlen(name);
373 for (i = 0; i < nlen; i++)
374 name[i] = TOLOWER_ASC(name[i]);
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;
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;
390 vms_fmatch[vms_match_num] = vim_strsave((char_u *)name);
392 ++vms_match_num;
393 return 1;
397 * mch_expand_wildcards this code does wild-card pattern
398 * matching NOT using the shell
400 * return OK for success, FAIL for error (you may lose some
401 * memory) and put an error message in *file.
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
410 mch_expand_wildcards(int num_pat, char_u **pat, int *num_file, char_u ***file, int flags)
412 int i, j = 0, cnt = 0;
413 char *cp;
414 char_u buf[MAXPATHL];
415 int dir;
416 int files_alloced, files_free;
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)
424 *num_file = 0;
425 return FAIL;
427 for (i = 0; i < num_pat; i++)
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]);
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;
441 if (cnt < 1)
442 continue;
444 for (i = 0; i < cnt; i++)
446 /* files should exist if expanding interactively */
447 if (!(flags & EW_NOTFOUND) && mch_getperm(vms_fmatch[i]) < 0)
448 continue;
450 /* do not include directories */
451 dir = (mch_isdir(vms_fmatch[i]));
452 if (( dir && !(flags & EW_DIR)) || (!dir && !(flags & EW_FILE)))
453 continue;
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;
459 /* allocate memory for pointers */
460 if (--files_free < 1)
462 files_alloced += EXPL_ALLOC_INC;
463 *file = (char_u **)realloc(*file,
464 sizeof(char_u **) * files_alloced);
465 if (*file == NULL)
467 *file = (char_u **)"";
468 *num_file = 0;
469 return(FAIL);
471 files_free = EXPL_ALLOC_INC;
474 (*file)[*num_file++] = vms_fmatch[i];
477 return OK;
481 mch_expandpath(garray_T *gap, char_u *path, int flags)
483 int i,cnt = 0;
484 char *cp;
485 vms_match_num = 0;
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++)
493 if (mch_getperm(vms_fmatch[i]) >= 0) /* add existing file */
494 addfile(gap, vms_fmatch[i], flags);
496 return cnt;
500 * attempt to translate a mixed unix-vms file specification to pure vms
502 static void
503 vms_unix_mixed_filespec(char *in, char *out)
505 char *lastcolon;
506 char *end_of_dir;
507 char ch;
508 int len;
510 /* copy vms filename portion up to last colon
511 * (node and/or disk)
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;
521 end_of_dir = NULL; /* default: no directory */
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);
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;
550 /* if we get here, there is a directory part of the filename */
552 /* initialize output file spec */
553 *out++ = ch;
554 ++in;
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);
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);
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;
579 /* Place next character into output file spec */
580 *out++ = ch;
581 ++in;
584 *out = '\0'; /* Terminate output file spec */
586 if (end_of_dir != NULL) /* Terminate directory portion */
587 *end_of_dir = ']';
592 * for decc$to_vms in vms_fixfilename
594 static int
595 vms_fspec_proc(char *fil, int val)
597 strcpy(Fspec_Rms,fil);
598 return(1);
602 * change unix and mixed filenames to VMS
604 void *
605 vms_fixfilename(void *instring)
607 static char *buf = NULL;
608 static size_t buflen = 0;
609 size_t len;
611 /* get a big-enough buffer */
612 len = strlen(instring) + 1;
613 if (len > buflen)
615 buflen = len + 128;
616 if (buf)
617 buf = (char *)realloc(buf, buflen);
618 else
619 buf = (char *)calloc(buflen, sizeof(char));
622 #ifdef DEBUG
623 char *tmpbuf = NULL;
624 tmpbuf = (char *)calloc(buflen, sizeof(char));
625 strcpy(tmpbuf, instring);
626 #endif
628 Fspec_Rms = buf; /* for decc$to_vms */
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? */
635 /* Seems it is a regular file, let guess that it is pure Unix fspec */
636 if (decc$to_vms(instring, vms_fspec_proc, 0, 0) <= 0)
637 /* No... it must be mixed */
638 vms_unix_mixed_filespec(instring, buf);
640 else
641 /* we have a password in the path */
642 /* decc$ functions can not handle */
643 /* this is our only hope to resolv */
644 vms_unix_mixed_filespec(instring, buf);
646 return buf;
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
654 void
655 vms_remove_version(void * fname)
657 char_u *cp;
658 char_u *fp;
660 if ((cp = vim_strchr( fname, ';')) != NULL) /* remove version */
661 *cp = '\0';
662 else if ((cp = vim_strrchr( fname, '.')) != NULL )
664 if ((fp = vim_strrchr( fname, ']')) != NULL ) {;}
665 else if ((fp = vim_strrchr( fname, '>')) != NULL ) {;}
666 else fp = fname;
668 while ( *fp != '\0' && fp < cp )
669 if ( *fp++ == '.' )
670 *cp = '\0';
672 return ;