[src/trunk]: src/usr.bin/make make(1): split Dir_Init into two functions

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

details:   https://anonhg.NetBSD.org/src/rev/f7bdae908013
branches:  trunk
changeset: 942896:f7bdae908013
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sat Aug 22 00:48:02 2020 +0000

description:
make(1): split Dir_Init into two functions

There's just no point in having a function consisting of a big
if-then-else.

diffstat:

 usr.bin/make/dir.c  |  35 +++++++++++++++--------------------
 usr.bin/make/dir.h  |   5 +++--
 usr.bin/make/main.c |  10 +++++-----
 3 files changed, 23 insertions(+), 27 deletions(-)

diffs (139 lines):

diff -r eaeb5ff70adc -r f7bdae908013 usr.bin/make/dir.c
--- a/usr.bin/make/dir.c        Sat Aug 22 00:13:16 2020 +0000
+++ b/usr.bin/make/dir.c        Sat Aug 22 00:48:02 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: dir.c,v 1.96 2020/08/21 04:42:02 rillig Exp $  */
+/*     $NetBSD: dir.c,v 1.97 2020/08/22 00:48:02 rillig Exp $  */
 
 /*
  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
@@ -70,14 +70,14 @@
  */
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: dir.c,v 1.96 2020/08/21 04:42:02 rillig Exp $";
+static char rcsid[] = "$NetBSD: dir.c,v 1.97 2020/08/22 00:48:02 rillig Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)dir.c      8.2 (Berkeley) 1/2/94";
 #else
-__RCSID("$NetBSD: dir.c,v 1.96 2020/08/21 04:42:02 rillig Exp $");
+__RCSID("$NetBSD: dir.c,v 1.97 2020/08/22 00:48:02 rillig Exp $");
 #endif
 #endif /* not lint */
 #endif
@@ -351,28 +351,23 @@
     return cached_stats(&lmtimes, pathname, st, CST_LSTAT);
 }
 
-/*-
- *-----------------------------------------------------------------------
- * Dir_Init --
- *     initialize things for this module
- *
- * Results:
- *     none
+/* Initialize things for this module.
  *
  * Side Effects:
  *     some directories may be opened.
- *-----------------------------------------------------------------------
  */
 void
-Dir_Init(const char *cdname)
+Dir_Init(void)
 {
-    if (!cdname) {
-       dirSearchPath = Lst_Init();
-       openDirectories = Lst_Init();
-       Hash_InitTable(&mtimes, 0);
-       Hash_InitTable(&lmtimes, 0);
-       return;
-    }
+    dirSearchPath = Lst_Init();
+    openDirectories = Lst_Init();
+    Hash_InitTable(&mtimes, 0);
+    Hash_InitTable(&lmtimes, 0);
+}
+
+void
+Dir_InitDir(const char *cdname)
+{
     Dir_InitCur(cdname);
 
     dotLast = bmake_malloc(sizeof(Path));
@@ -383,7 +378,7 @@
 }
 
 /*
- * Called by Dir_Init() and whenever .CURDIR is assigned to.
+ * Called by Dir_InitDir and whenever .CURDIR is assigned to.
  */
 void
 Dir_InitCur(const char *cdname)
diff -r eaeb5ff70adc -r f7bdae908013 usr.bin/make/dir.h
--- a/usr.bin/make/dir.h        Sat Aug 22 00:13:16 2020 +0000
+++ b/usr.bin/make/dir.h        Sat Aug 22 00:48:02 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: dir.h,v 1.18 2017/05/31 22:02:06 maya Exp $    */
+/*     $NetBSD: dir.h,v 1.19 2020/08/22 00:48:02 rillig Exp $  */
 
 /*
  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
@@ -86,7 +86,8 @@
     Hash_Table    files;       /* Hash table of files in directory */
 } Path;
 
-void Dir_Init(const char *);
+void Dir_Init(void);
+void Dir_InitDir(const char *);
 void Dir_InitCur(const char *);
 void Dir_InitDot(void);
 void Dir_End(void);
diff -r eaeb5ff70adc -r f7bdae908013 usr.bin/make/main.c
--- a/usr.bin/make/main.c       Sat Aug 22 00:13:16 2020 +0000
+++ b/usr.bin/make/main.c       Sat Aug 22 00:48:02 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: main.c,v 1.305 2020/08/21 02:20:47 rillig Exp $        */
+/*     $NetBSD: main.c,v 1.306 2020/08/22 00:48:02 rillig Exp $        */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -69,7 +69,7 @@
  */
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: main.c,v 1.305 2020/08/21 02:20:47 rillig Exp $";
+static char rcsid[] = "$NetBSD: main.c,v 1.306 2020/08/22 00:48:02 rillig Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
@@ -81,7 +81,7 @@
 #if 0
 static char sccsid[] = "@(#)main.c     8.3 (Berkeley) 3/19/94";
 #else
-__RCSID("$NetBSD: main.c,v 1.305 2020/08/21 02:20:47 rillig Exp $");
+__RCSID("$NetBSD: main.c,v 1.306 2020/08/22 00:48:02 rillig Exp $");
 #endif
 #endif /* not lint */
 #endif
@@ -1168,7 +1168,7 @@
 #ifdef USE_META
        meta_init();
 #endif
-       Dir_Init(NULL);         /* Dir_* safe to call from MainParseArgs */
+       Dir_Init();
 
        /*
         * First snag any flags out of the MAKE environment variable.
@@ -1249,7 +1249,7 @@
         * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order.  If none
         * of these paths exist, just use .CURDIR.
         */
-       Dir_Init(curdir);
+       Dir_InitDir(curdir);
        (void)Main_SetObjdir("%s", curdir);
 
        if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) &&