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make/vmsify.c
Paul Smith 7ef56bc8dc Update copyright statements for 2017.
2017-07-09 21:52:28 -04:00

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/* vmsify.c -- Module for vms <-> unix file name conversion
Copyright (C) 1996-2017 Free Software Foundation, Inc.
This file is part of GNU Make.
GNU Make is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3 of the License, or (at your option) any later
version.
GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Klaus Kämpf (kkaempf@progis.de)
of proGIS Software, Aachen, Germany */
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "makeint.h"
#if VMS
#include <unixlib.h>
#include <stdlib.h>
#include <jpidef.h>
#include <descrip.h>
#include <uaidef.h>
#include <ssdef.h>
#include <starlet.h>
#include <lib$routines.h>
/* Initialize a string descriptor (struct dsc$descriptor_s) for an
arbitrary string. ADDR is a pointer to the first character
of the string, and LEN is the length of the string. */
#define INIT_DSC_S(dsc, addr, len) do { \
(dsc).dsc$b_dtype = DSC$K_DTYPE_T; \
(dsc).dsc$b_class = DSC$K_CLASS_S; \
(dsc).dsc$w_length = (len); \
(dsc).dsc$a_pointer = (addr); \
} while (0)
/* Initialize a string descriptor (struct dsc$descriptor_s) for a
NUL-terminated string. S is a pointer to the string; the length
is determined by calling strlen(). */
#define INIT_DSC_CSTRING(dsc, s) INIT_DSC_S(dsc, s, strlen(s))
#endif
/*
copy 'from' to 'to' up to but not including 'upto'
return 0 if eos on from
return 1 if upto found
return 'to' at last char + 1
return 'from' at match + 1 or eos if no match
if as_dir == 1, change all '.' to '_'
else change all '.' but the last to '_'
*/
static int
copyto (char **to, const char **from, char upto, int as_dir)
{
const char *s;
s = strrchr (*from, '.');
while (**from)
{
if (**from == upto)
{
do
{
(*from)++;
}
while (**from == upto);
return 1;
}
if (**from == '.')
{
if ((as_dir == 1)
|| (*from != s))
**to = '_';
else
**to = '.';
}
else
{
#ifdef HAVE_CASE_INSENSITIVE_FS
if (isupper ((unsigned char)**from))
**to = tolower ((unsigned char)**from);
else
#endif
**to = **from;
}
(*to)++;
(*from)++;
}
return 0;
}
/*
get translation of logical name
*/
static char *
trnlog (const char *name)
{
int stat;
static char reslt[1024];
$DESCRIPTOR (reslt_dsc, reslt);
short resltlen;
struct dsc$descriptor_s name_dsc;
char *s;
/*
* the string isn't changed, but there is no string descriptor with
* "const char *dsc$a_pointer"
*/
INIT_DSC_CSTRING (name_dsc, (char *)name);
stat = lib$sys_trnlog (&name_dsc, &resltlen, &reslt_dsc);
if ((stat&1) == 0)
{
return "";
}
if (stat == SS$_NOTRAN)
{
return "";
}
reslt[resltlen] = '\0';
s = xmalloc (resltlen+1);
strcpy (s, reslt);
return s;
}
static char *
showall (char *s)
{
static char t[512];
char *pt;
pt = t;
if (strchr (s, '\\') == 0)
return s;
while (*s)
{
if (*s == '\\')
{
*pt++ = *s;
}
*pt++ = *s++;
}
return pt;
}
enum namestate { N_START, N_DEVICE, N_OPEN, N_DOT, N_CLOSED, N_DONE };
/*
convert unix style name to vms style
type = 0 -> name is a full name (directory and filename part)
type = 1 -> name is a directory
type = 2 -> name is a filename without directory
The following conversions are applied
(0) (1) (2)
input full name dir name file name
1 ./ <cwd> [] <current directory>.dir
2 ../ <home of cwd> <home of cwd> <home of cwd>.dir
3 // <dev of cwd>: <dev of cwd>:[000000] <dev of cwd>:000000.dir
4 //a a: a: a:
5 //a/ a: a: a:000000.dir
9 / [000000] [000000] 000000.dir
10 /a [000000]a [a] [000000]a
11 /a/ [a] [a] [000000]a.dir
12 /a/b [a]b [a.b] [a]b
13 /a/b/ [a.b] [a.b] [a]b.dir
14 /a/b/c [a.b]c [a.b.c] [a.b]c
15 /a/b/c/ [a.b.c] [a.b.c] [a.b]c.dir
16 a a [.a] a
17 a/ [.a] [.a] a.dir
18 a/b [.a]b [.a.b] [.a]b
19 a/b/ [.a.b] [.a.b] [.a]b.dir
20 a/b/c [.a.b]c [.a.b.c] [.a.b]c
21 a/b/c/ [.a.b.c] [.a.b.c] [.a.b]c.dir
22 a.b.c a_b.c [.a_b_c] a_b_c.dir
23 [x][y]z [x.y]z [x.y]z [x.y]z
24 [x][.y]z [x.y]z [x.y]z [x.y]z
25 filenames with '$' are left unchanged if they contain no '/'
25 filenames with ':' are left unchanged
26 filenames with a single pair of '[' ']' are left unchanged
The input string is not written to. The result is also const because
it's a static buffer; we don't want to change it.
*/
const char *
vmsify (const char *name, int type)
{
/* max 255 device
max 39 directory
max 39 filename
max 39 filetype
max 5 version
*/
/* todo: VMSMAXPATHLEN is defined for ODS2 names: it needs to be adjusted. */
#define VMSMAXPATHLEN 512
enum namestate nstate;
static char vmsname[VMSMAXPATHLEN+1];
const char *fptr;
const char *t;
char *vptr;
int as_dir;
int count;
const char *s;
const char *s1;
const char *s2;
if (name == 0)
return 0;
fptr = name;
vptr = vmsname;
nstate = N_START;
/* case 25a */
t = strpbrk (name, "$:");
if (t != 0)
{
// const char *s1;
// const char *s2;
if (type == 1)
{
s1 = strchr (t+1, '[');
s2 = strchr (t+1, ']');
}
if (*t == '$')
{
if (strchr (name, '/') == 0)
{
strcpy (vmsname, name);
if ((type == 1) && (s1 != 0) && (s2 == 0))
strcat (vmsname, "]");
return vmsname;
}
}
else
{
strcpy (vmsname, name);
if ((type == 1) && (s1 != 0) && (s2 == 0))
strcat (vmsname, "]");
return vmsname;
}
}
/* case 26 */
t = strchr (name, '[');
if (t != 0)
{
// const char *s;
// const char *s1 = strchr (t+1, '[');
s1 = strchr (t+1, '[');
if (s1 == 0)
{
strcpy (vmsname, name);
if ((type == 1) && (strchr (t+1, ']') == 0))
strcat (vmsname, "]");
return vmsname;
}
s1--;
if (*s1 != ']')
{
strcpy (vmsname, name);
return vmsname; /* not ][, keep unchanged */
}
/* we have ][ */
s = name;
/* s -> starting char
s1 -> ending ']' */
do
{
strncpy (vptr, s, s1-s); /* copy up to but not including ']' */
vptr += s1-s;
if (*s1 == 0)
break;
s = s1 + 1; /* s -> char behind ']' */
if (*s != '[') /* was '][' ? */
break; /* no, last ] found, exit */
s++;
if (*s != '.')
*vptr++ = '.';
s1 = strchr (s, ']');
if (s1 == 0) /* no closing ] */
s1 = s + strlen (s);
}
while (1);
*vptr++ = ']';
fptr = s;
}
else /* no [ in name */
{
int state = 0;
int rooted = 1; /* flag if logical is rooted, else insert [000000] */
do
{
switch (state)
{
case 0: /* start of loop */
if (*fptr == '/')
{
fptr++;
state = 1;
}
else if (*fptr == '.')
{
fptr++;
state = 10;
}
else
state = 2;
break;
case 1: /* '/' at start */
if (*fptr == '/')
{
fptr++;
state = 3;
}
else
state = 4;
break;
case 2: /* no '/' at start */
{
const char *s = strchr (fptr, '/');
if (s == 0) /* no '/' (16) */
{
if (type == 1)
{
strcpy (vptr, "[.");
vptr += 2;
}
copyto (&vptr, &fptr, 0, (type==1));
if (type == 1)
*vptr++ = ']';
state = -1;
}
else /* found '/' (17..21) */
{
if ((type == 2)
&& (*(s+1) == 0)) /* 17(2) */
{
copyto (&vptr, &fptr, '/', 1);
state = 7;
}
else
{
strcpy (vptr, "[.");
vptr += 2;
copyto (&vptr, &fptr, '/', 1);
nstate = N_OPEN;
state = 9;
}
}
break;
}
case 3: /* '//' at start */
{
// const char *s;
// const char *s1;
char *vp;
while (*fptr == '/') /* collapse all '/' */
fptr++;
if (*fptr == 0) /* just // */
{
char cwdbuf[VMSMAXPATHLEN+1];
s1 = getcwd(cwdbuf, VMSMAXPATHLEN);
if (s1 == 0)
{
vmsname[0] = '\0';
return vmsname; /* FIXME, err getcwd */
}
s = strchr (s1, ':');
if (s == 0)
{
vmsname[0] = '\0';
return vmsname; /* FIXME, err no device */
}
strncpy (vptr, s1, s-s1+1);
vptr += s-s1+1;
state = -1;
break;
}
s = vptr;
if (copyto (&vptr, &fptr, '/', 1) == 0) /* copy device part */
{
*vptr++ = ':';
state = -1;
break;
}
*vptr = ':';
nstate = N_DEVICE;
if (*fptr == 0) /* just '//a/' */
{
strcpy (vptr+1, "[000000]");
vptr += 9;
state = -1;
break;
}
*vptr = 0;
/* check logical for [000000] insertion */
vp = trnlog (s);
if (*vp != '\0')
{ /* found translation */
for (;;) /* loop over all nested logicals */
{
char *vp2 = vp + strlen (vp) - 1;
if (*vp2 == ':') /* translation ends in ':' */
{
vp2 = trnlog (vp);
free (vp);
if (*vp2 == 0)
{
rooted = 0;
break;
}
vp = vp2;
continue; /* next iteration */
}
if (*vp2 == ']') /* translation ends in ']' */
{
if (*(vp2-1) == '.') /* ends in '.]' */
{
if (strncmp (fptr, "000000", 6) != 0)
rooted = 0;
}
else
{
strcpy (vmsname, s1);
vp = strchr (vmsname, ']');
*vp = '.';
nstate = N_DOT;
vptr = vp;
}
}
break;
}
free (vp);
}
else
rooted = 0;
if (*vptr == 0)
{
nstate = N_DEVICE;
*vptr++ = ':';
}
else
vptr++;
if (rooted == 0)
{
nstate = N_DOT;
strcpy (vptr, "[000000.");
vptr += 8;
vp = vptr-1;
}
else
vp = 0;
/* vp-> '.' after 000000 or NULL */
s = strchr (fptr, '/');
if (s == 0)
{ /* no next '/' */
if (*(vptr-1) == '.')
*(vptr-1) = ']';
else if (rooted == 0)
*vptr++ = ']';
copyto (&vptr, &fptr, 0, (type == 1));
state = -1;
break;
}
else
{
while (*(s+1) == '/') /* skip multiple '/' */
s++;
}
if ((rooted != 0)
&& (*(vptr-1) != '.'))
{
*vptr++ = '[';
nstate = N_DOT;
}
else
if ((nstate == N_DOT)
&& (vp != 0)
&& (*(s+1) == 0))
{
if (type == 2)
{
*vp = ']';
nstate = N_CLOSED;
}
}
state = 9;
break;
}
case 4: /* single '/' at start (9..15) */
if (*fptr == 0)
state = 5;
else
state = 6;
break;
case 5: /* just '/' at start (9) */
if (type != 2)
{
*vptr++ = '[';
nstate = N_OPEN;
}
strcpy (vptr, "000000");
vptr += 6;
if (type == 2)
state = 7;
else
state = 8;
break;
case 6: /* chars following '/' at start 10..15 */
{
const char *s;
*vptr++ = '[';
nstate = N_OPEN;
s = strchr (fptr, '/');
if (s == 0) /* 10 */
{
if (type != 1)
{
strcpy (vptr, "000000]");
vptr += 7;
}
copyto (&vptr, &fptr, 0, (type == 1));
if (type == 1)
{
*vptr++ = ']';
}
state = -1;
}
else /* 11..15 */
{
if ( (type == 2)
&& (*(s+1) == 0)) /* 11(2) */
{
strcpy (vptr, "000000]");
nstate = N_CLOSED;
vptr += 7;
}
copyto (&vptr, &fptr, '/', (*(vptr-1) != ']'));
state = 9;
}
break;
}
case 7: /* add '.dir' and exit */
if ((nstate == N_OPEN)
|| (nstate == N_DOT))
{
char *vp = vptr-1;
while (vp > vmsname)
{
if (*vp == ']')
{
break;
}
if (*vp == '.')
{
*vp = ']';
break;
}
vp--;
}
}
strcpy (vptr, ".dir");
vptr += 4;
state = -1;
break;
case 8: /* add ']' and exit */
*vptr++ = ']';
state = -1;
break;
case 9: /* 17..21, fptr -> 1st '/' + 1 */
{
const char *s;
if (*fptr == 0)
{
if (type == 2)
{
state = 7;
}
else
state = 8;
break;
}
s = strchr (fptr, '/');
if (s == 0)
{
if (type != 1)
{
if (nstate == N_OPEN)
{
*vptr++ = ']';
nstate = N_CLOSED;
}
as_dir = 0;
}
else
{
if (nstate == N_OPEN)
{
*vptr++ = '.';
nstate = N_DOT;
}
as_dir = 1;
}
}
else
{
while (*(s+1) == '/')
s++;
if ( (type == 2)
&& (*(s+1) == 0)) /* 19(2), 21(2)*/
{
if (nstate != N_CLOSED)
{
*vptr++ = ']';
nstate = N_CLOSED;
}
as_dir = 1;
}
else
{
if (nstate == N_OPEN)
{
*vptr++ = '.';
nstate = N_DOT;
}
as_dir = 1;
}
}
if ( (*fptr == '.') /* check for '..' or '../' */
&& (*(fptr+1) == '.')
&& ((*(fptr+2) == '/')
|| (*(fptr+2) == 0)) )
{
char *vp;
fptr += 2;
if (*fptr == '/')
{
do
{
fptr++;
}
while (*fptr == '/');
}
else if (*fptr == 0)
type = 1;
vptr--; /* vptr -> '.' or ']' */
vp = vptr;
for (;;)
{
vp--;
if (*vp == '.') /* one back */
{
vptr = vp;
nstate = N_OPEN;
break;
}
if (*vp == '[') /* top level reached */
{
if (*fptr == 0)
{
strcpy (vp, "[000000]");
vptr = vp + 8;
nstate = N_CLOSED;
s = 0;
break;
}
else
{
vptr = vp+1;
nstate = N_OPEN;
break;
}
}
}
}
else
{
copyto (&vptr, &fptr, '/', as_dir);
if (nstate == N_DOT)
nstate = N_OPEN;
}
if (s == 0)
{ /* 18,20 */
if (type == 1)
*vptr++ = ']';
state = -1;
}
else
{
if (*(s+1) == 0)
{
if (type == 2) /* 19,21 */
{
state = 7;
}
else
{
*vptr++ = ']';
state = -1;
}
}
}
break;
}
case 10: /* 1,2 first is '.' */
if (*fptr == '.')
{
fptr++;
state = 11;
}
else
state = 12;
break;
case 11: /* 2, '..' at start */
count = 1;
if (*fptr != 0)
{
if (*fptr != '/') /* got ..xxx */
{
strcpy (vmsname, name);
return vmsname;
}
do /* got ../ */
{
fptr++;
while (*fptr == '/') fptr++;
if (*fptr != '.')
break;
if (*(fptr+1) != '.')
break;
fptr += 2;
if ((*fptr == 0)
|| (*fptr == '/'))
count++;
}
while (*fptr == '/');
}
{ /* got '..' or '../' */
char *vp;
char cwdbuf[VMSMAXPATHLEN+1];
vp = getcwd(cwdbuf, VMSMAXPATHLEN);
if (vp == 0)
{
vmsname[0] = '\0';
return vmsname; /* FIXME, err getcwd */
}
strcpy (vptr, vp);
vp = strchr (vptr, ']');
if (vp != 0)
{
nstate = N_OPEN;
while (vp > vptr)
{
vp--;
if (*vp == '[')
{
vp++;
strcpy (vp, "000000]");
state = -1;
break;
}
else if (*vp == '.')
{
if (--count == 0)
{
if (*fptr == 0) /* had '..' or '../' */
{
*vp++ = ']';
state = -1;
}
else /* had '../xxx' */
{
state = 9;
}
*vp = '\0';
break;
}
}
}
}
vptr += strlen (vptr);
}
break;
case 12: /* 1, '.' at start */
if (*fptr != 0)
{
if (*fptr != '/')
{
strcpy (vmsname, name);
return vmsname;
}
while (*fptr == '/')
fptr++;
}
{
char *vp;
char cwdbuf[VMSMAXPATHLEN+1];
vp = getcwd(cwdbuf, VMSMAXPATHLEN);
if (vp == 0)
{
vmsname[0] = '\0';
return vmsname; /*FIXME, err getcwd */
}
strcpy (vptr, vp);
}
if (*fptr == 0)
{
state = -1;
break;
}
else
{
char *vp = strchr (vptr, ']');
if (vp == 0)
{
state = -1;
break;
}
*vp = '\0';
nstate = N_OPEN;
vptr += strlen (vptr);
state = 9;
}
break;
}
}
while (state > 0);
}
/* directory conversion done
fptr -> filename part of input string
vptr -> free space in vmsname
*/
*vptr++ = 0;
return vmsname;
}
/*
convert from vms-style to unix-style
dev:[dir1.dir2] //dev/dir1/dir2/
*/
const char *
unixify (const char *name)
{
static char piece[512];
const char *s;
char *p;
if (strchr (name, '/') != 0) /* already in unix style */
{
strcpy (piece, name);
return piece;
}
p = piece;
*p = 0;
/* device part */
s = strchr (name, ':');
if (s != 0)
{
int l = s - name;
*p++ = '/';
*p++ = '/';
strncpy (p, name, l);
p += l;
}
/* directory part */
*p++ = '/';
s = strchr (name, '[');
if (s != 0)
{
s++;
switch (*s)
{
case ']': /* [] */
strcat (p, "./");
break;
case '-': /* [- */
strcat (p, "../");
break;
case '.':
strcat (p, "./"); /* [. */
break;
default:
s--;
break;
}
s++;
while (*s)
{
if (*s == '.')
*p++ = '/';
else
*p++ = *s;
s++;
if (*s == ']')
{
s++;
break;
}
}
if (*s != 0) /* more after ']' ?? */
{
if (*(p-1) != '/')
*p++ = '/';
strcpy (p, s); /* copy it anyway */
}
}
else /* no '[' anywhere */
{
*p++ = 0;
}
/* force end with '/' */
if (*(p-1) != '/')
*p++ = '/';
*p = 0;
return piece;
}
/* EOF */
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