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- /* Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993
- 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"
-
- #ifndef NO_ARCHIVES
-
- #include "file.h"
- #include "dep.h"
- #include <fnmatch.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.
-
- But we must be careful not to enter_file the archive itself if it does
- not exist, because pattern_search assumes that files found in the data
- base exist or can be made. */
- {
- struct file *arfile;
- arfile = lookup_file (arname);
- if (arfile == 0 && file_exists_p (arname))
- {
- arfile = enter_file (arname);
- arname_used = 1;
- }
-
- if (arfile != 0)
- (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, truncated,
- hdrpos, datapos, size, date, uid, gid, mode, name)
- int desc;
- char *mem;
- int truncated;
- long int hdrpos, datapos, size, date;
- int uid, gid, mode;
- char *name;
- {
- return ar_name_equal (name, mem, truncated) ? 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;
- }
-
- /* State of an `ar_glob' run, passed to `ar_glob_match'. */
-
- struct ar_glob_state
- {
- char *arname;
- char *pattern;
- unsigned int size;
- struct nameseq *chain;
- unsigned int n;
- };
-
- /* This function is called by `ar_scan' to match one archive
- element against the pattern in STATE. */
-
- static long int
- ar_glob_match (desc, mem, truncated,
- hdrpos, datapos, size, date, uid, gid, mode,
- state)
- int desc;
- char *mem;
- int truncated;
- long int hdrpos, datapos, size, date;
- int uid, gid, mode;
- struct ar_glob_state *state;
- {
- if (fnmatch (state->pattern, mem, FNM_PATHNAME|FNM_PERIOD) == 0)
- {
- /* We have a match. Add it to the chain. */
- struct nameseq *new = (struct nameseq *) xmalloc (state->size);
- new->name = concat (state->arname, mem, ")");
- new->next = state->chain;
- state->chain = new;
- ++state->n;
- }
-
- return 0L;
- }
-
- /* Alphabetic sorting function for `qsort'. */
-
- static int
- ar_glob_alphacompare (a, b)
- char **a, **b;
- {
- return strcmp (*a, *b);
- }
-
- /* Return nonzero if PATTERN contains any metacharacters.
- Metacharacters can be quoted with backslashes if QUOTE is nonzero. */
- static int
- glob_pattern_p (pattern, quote)
- const char *pattern;
- const int quote;
- {
- register const char *p;
- int open = 0;
-
- for (p = pattern; *p != '\0'; ++p)
- switch (*p)
- {
- case '?':
- case '*':
- return 1;
-
- case '\\':
- if (quote)
- ++p;
- break;
-
- case '[':
- open = 1;
- break;
-
- case ']':
- if (open)
- return 1;
- break;
- }
-
- return 0;
- }
-
- /* Glob for MEMBER_PATTERN in archive ARNAME.
- Return a malloc'd chain of matching elements (or nil if none). */
-
- struct nameseq *
- ar_glob (arname, member_pattern, size)
- char *arname, *member_pattern;
- unsigned int size;
- {
- struct ar_glob_state state;
- char **names;
- struct nameseq *n;
- unsigned int i;
-
- if (! glob_pattern_p (member_pattern, 1))
- return 0;
-
- /* Scan the archive for matches.
- ar_glob_match will accumulate them in STATE.chain. */
- i = strlen (arname);
- state.arname = (char *) alloca (i + 2);
- bcopy (arname, state.arname, i);
- state.arname[i] = '(';
- state.arname[i + 1] = '\0';
- state.pattern = member_pattern;
- state.size = size;
- state.chain = 0;
- state.n = 0;
- (void) ar_scan (arname, ar_glob_match, (long int) &state);
-
- if (state.chain == 0)
- return 0;
-
- /* Now put the names into a vector for sorting. */
- names = (char **) alloca (state.n * sizeof (char *));
- i = 0;
- for (n = state.chain; n != 0; n = n->next)
- names[i++] = n->name;
-
- /* Sort them alphabetically. */
- qsort ((char *) names, i, sizeof (*names), ar_glob_alphacompare);
-
- /* Put them back into the chain in the sorted order. */
- i = 0;
- for (n = state.chain; n != 0; n = n->next)
- n->name = names[i++];
-
- return state.chain;
- }
-
- #endif /* Not NO_ARCHIVES. */
-