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- /* ar.c */
- /* Copyright (C) 1988-1991 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 2, 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 GNU Make; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "make.h"
- #include "file.h"
-
-
- /* Defined in arscan.c. */
- extern long int ar_scan ();
- extern int ar_member_touch ();
- extern int ar_name_equal ();
-
-
- /* Return nonzero if NAME is an archive-member reference, zero if not.
- An archive-member reference is a name like `lib(member)'.
- If a name like `lib((entry))' is used, a fatal error is signaled at
- the attempt to use this unsupported feature. */
-
- int ar_name (char *name)
- {
- char *p = index (name, '('), *end = name + strlen (name) - 1;
-
- if (p == 0 || p == name || *end != ')')
- return 0;
-
- if (p[1] == '(' && end[-1] == ')')
- fatal ("attempt to use unsupported feature: `%s'", name);
-
- return 1;
- }
-
-
- /* Parse the archive-member reference NAME into the archive and member names.
- Put the malloc'd archive name in *ARNAME_P if ARNAME_P is non-nil;
- put the malloc'd member name in *MEMNAME_P if MEMNAME_P is non-nil. */
-
- void ar_parse_name (char *name, char **arname_p, char **memname_p)
- {
- char *p = index (name, '('), *end = name + strlen (name) - 1;
-
- if (arname_p != 0)
- *arname_p = savestring (name, p - name);
-
- if (memname_p != 0)
- *memname_p = savestring (p + 1, end - (p + 1));
- }
-
- static long int ar_member_date_1 ();
-
- /* Return the modtime of NAME. */
-
- time_t ar_member_date (char *name)
- {
- char *arname;
- int arname_used = 0;
- char *memname;
- long int val;
-
- ar_parse_name (name, &arname, &memname);
-
- /* Make sure we know the modtime of the archive itself because
- we are likely to be called just before commands to remake a
- member are run, and they will change the archive itself. */
- {
- struct file *arfile;
- arfile = lookup_file (arname);
- if (arfile == 0)
- {
- arfile = enter_file (arname);
- arname_used = 1;
- }
-
- (void) f_mtime (arfile, 0);
- }
-
- val = ar_scan (arname, ar_member_date_1, (long int) memname);
-
- if (!arname_used)
- xfree (arname);
- xfree (memname);
-
- return (val <= 0 ? (time_t) -1 : (time_t) val);
- }
-
- /* This function is called by `ar_scan' to find which member to look at. */
-
- /* ARGSUSED */
- static long int ar_member_date_1 (int desc, char *mem, long hdrpos
- , long datapos, long size, long date, int uid, int gid, int mode
- , char *name)
- {
- return ar_name_equal (name, mem) ? date : 0;
- }
-
- /* Set the archive-member NAME's modtime to now. */
-
- int ar_touch (char *name)
- {
- char *arname, *memname;
- int arname_used = 0;
- register int val;
-
- ar_parse_name (name, &arname, &memname);
-
- /* Make sure we know the modtime of the archive itself before we
- touch the member, since this will change the archive itself. */
- {
- struct file *arfile;
- arfile = lookup_file (arname);
- if (arfile == 0)
- {
- arfile = enter_file (arname);
- arname_used = 1;
- }
-
- (void) f_mtime (arfile, 0);
- }
-
- val = 1;
- switch (ar_member_touch (arname, memname))
- {
- case -1:
- error ("touch: Archive `%s' does not exist", arname);
- break;
- case -2:
- error ("touch: `%s' is not a valid archive", arname);
- break;
- case -3:
- perror_with_name ("touch: ", arname);
- break;
- case 1:
- error ("touch: Member `%s' does not exist in `%s'", memname, arname);
- break;
- case 0:
- val = 0;
- break;
- default:
- error ("touch: Bad return code from ar_member_touch on `%s'", name);
- }
-
- if (!arname_used)
- xfree (arname);
- xfree (memname);
-
- return val;
- }
-