[src/trunk]: src/usr.bin/make make(1): update the deactivated code in Dir_Fin...

[rillig <rillig%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/bbb3baad6bb1
branches:  trunk
changeset: 946332:bbb3baad6bb1
user:      rillig <rillig%NetBSD.org@localhost>
date:      Mon Nov 23 22:05:58 2020 +0000

description:
make(1): update the deactivated code in Dir_FindFile

While here, reduce the scope of the variable ln.

diffstat:

 usr.bin/make/dir.c |  49 ++++++++++++++++++++++++++-----------------------
 1 files changed, 26 insertions(+), 23 deletions(-)

diffs (114 lines):

diff -r c03c9158555e -r bbb3baad6bb1 usr.bin/make/dir.c
--- a/usr.bin/make/dir.c        Mon Nov 23 21:48:42 2020 +0000
+++ b/usr.bin/make/dir.c        Mon Nov 23 22:05:58 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: dir.c,v 1.216 2020/11/23 21:48:42 rillig Exp $ */
+/*     $NetBSD: dir.c,v 1.217 2020/11/23 22:05:58 rillig Exp $ */
 
 /*
  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
@@ -134,7 +134,7 @@
 #include "job.h"
 
 /*     "@(#)dir.c      8.2 (Berkeley) 1/2/94"  */
-MAKE_RCSID("$NetBSD: dir.c,v 1.216 2020/11/23 21:48:42 rillig Exp $");
+MAKE_RCSID("$NetBSD: dir.c,v 1.217 2020/11/23 22:05:58 rillig Exp $");
 
 #define DIR_DEBUG0(text) DEBUG0(DIR, text)
 #define DIR_DEBUG1(fmt, arg1) DEBUG1(DIR, fmt, arg1)
@@ -972,7 +972,6 @@
 char *
 Dir_FindFile(const char *name, SearchPath *path)
 {
-       SearchPathNode *ln;
        char *file;             /* the current filename to check */
        const char *base;       /* Terminal name of file */
        Boolean hasLastDot = FALSE; /* true if we should search dot last */
@@ -1001,8 +1000,8 @@
                return NULL;
        }
 
-       if ((ln = path->first) != NULL) {
-               CachedDir *dir = ln->datum;
+       if (path->first != NULL) {
+               CachedDir *dir = path->first->datum;
                if (dir == dotLast) {
                        hasLastDot = TRUE;
                        DIR_DEBUG0("[dot last]...");
@@ -1016,6 +1015,8 @@
         * of each of the directories on the search path.
         */
        if (!hasSlash || (base - name == 2 && *name == '.')) {
+               SearchPathNode *ln;
+
                /*
                 * We look through all the directories on the path seeking one
                 * which contains the final component of the given name.  If
@@ -1033,7 +1034,7 @@
                if (!hasLastDot && (file = DirFindDot(name, base)) != NULL)
                        return file;
 
-               for (; ln != NULL; ln = ln->next) {
+               for (ln = path->first; ln != NULL; ln = ln->next) {
                        CachedDir *dir = ln->datum;
                        if (dir == dotLast)
                                continue;
@@ -1071,6 +1072,7 @@
        }
 
        if (name[0] != '/') {
+               SearchPathNode *ln;
                Boolean checkedDot = FALSE;
 
                DIR_DEBUG0("   Trying subdirectories...\n");
@@ -1118,6 +1120,7 @@
                }
 
        } else { /* name[0] == '/' */
+               SearchPathNode *ln;
 
                /*
                 * For absolute names, compare directory path prefix against
@@ -1182,25 +1185,25 @@
         * b/c we added it here. This is not good...
         */
 #if 0
-       if (base == trailing_dot) {
-               base = strrchr(name, '/');
-               base++;
-       }
-       base[-1] = '\0';
-       (void)Dir_AddDir(path, name);
-       base[-1] = '/';
+       {
+               CachedDir *dir;
+               char *prefix;
 
-       bigmisses++;
-       ln = Lst_Last(path);
-       if (ln == NULL) {
-               return NULL;
-       } else {
-               dir = LstNode_Datum(ln);
-       }
+               if (base == trailing_dot) {
+                       base = strrchr(name, '/');
+                       base++;
+               }
+               prefix = bmake_strsedup(name, base - 1);
+               (void)Dir_AddDir(path, prefix);
+               free(prefix);
 
-       if (Hash_FindEntry(&dir->files, base) != NULL) {
-               return bmake_strdup(name);
-       } else {
+               bigmisses++;
+               if (path->last == NULL)
+                       return NULL;
+
+               dir = path->last->datum;
+               if (HashSet_Contains(&dir->files, base))
+                       return bmake_strdup(name);
                return NULL;
        }
 #else