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-rw-r--r--ar.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/ar.c b/ar.c
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+/* Copyright (C) 1988, 1989, 1990, 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 (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 (name, arname_p, memname_p)
+ char *name, **arname_p, **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 (name)
+ 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)
+ free (arname);
+ free (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 (desc, mem, hdrpos, datapos, size, date, uid, gid, mode, name)
+ int desc;
+ char *mem;
+ long int hdrpos, datapos, size, date;
+ int uid, gid, mode;
+ char *name;
+{
+ return ar_name_equal (name, mem) ? date : 0;
+}
+
+/* Set the archive-member NAME's modtime to now. */
+
+int
+ar_touch (name)
+ 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)
+ free (arname);
+ free (memname);
+
+ return val;
+}