[src/trunk]: src/usr.bin/config merge a bit of duplicated code.

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

details:   https://anonhg.NetBSD.org/src/rev/4f1f385d0447
branches:  trunk
changeset: 803749:4f1f385d0447
user:      christos <christos%NetBSD.org@localhost>
date:      Mon Nov 10 21:13:04 2014 +0000

description:
merge a bit of duplicated code.

diffstat:

 usr.bin/config/mkdevsw.c |  77 +++++++++++++++++++++++++----------------------
 1 files changed, 41 insertions(+), 36 deletions(-)

diffs (121 lines):

diff -r e76c5fcc74a9 -r 4f1f385d0447 usr.bin/config/mkdevsw.c
--- a/usr.bin/config/mkdevsw.c  Mon Nov 10 20:52:47 2014 +0000
+++ b/usr.bin/config/mkdevsw.c  Mon Nov 10 21:13:04 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mkdevsw.c,v 1.11 2014/10/29 17:14:50 christos Exp $    */
+/*     $NetBSD: mkdevsw.c,v 1.12 2014/11/10 21:13:04 christos Exp $    */
 
 /*
  * Copyright (c) 2002 The NetBSD Foundation, Inc.
@@ -34,7 +34,7 @@
 #endif
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: mkdevsw.c,v 1.11 2014/10/29 17:14:50 christos Exp $");
+__RCSID("$NetBSD: mkdevsw.c,v 1.12 2014/11/10 21:13:04 christos Exp $");
 
 #include <stdio.h>
 #include <string.h>
@@ -89,37 +89,54 @@
                  "#include <sys/conf.h>\n", fp);
 }
 
+static void
+dentry(FILE *fp, struct hashtab *t, devmajor_t i, char p)
+{
+       const struct devm *dm;
+       char mstr[16];
+
+       (void)snprintf(mstr, sizeof(mstr), "%d", i);
+       if ((dm = ht_lookup(t, intern(mstr))) == NULL)
+               return;
+
+       fprintf(fp, "extern const struct %cdevsw %s_%cdevsw;\n",
+           p, dm->dm_name, p);
+}
+
+static void
+pentry(FILE *fp, struct hashtab *t, devmajor_t i, char p)
+{
+       const struct devm *dm;
+       char mstr[16];
+
+       (void)snprintf(mstr, sizeof(mstr), "%d", i);
+       dm = ht_lookup(t, intern(mstr));
+
+       if (dm)
+               fprintf(fp, "\t&%s_%cdevsw", dm->dm_name, p); 
+       else
+               fputs("\tNULL", fp);
+
+       fprintf(fp, ",\t// %3d\n", i);
+}
+
 /*
  * Emit device switch table for character/block device.
  */
 static void
 emitdevm(FILE *fp)
 {
-       struct devm *dm;
-       char mstr[16];
        devmajor_t i;
 
        fputs("\n/* device switch table for block device */\n", fp);
 
-       for (i = 0 ; i <= maxbdevm ; i++) {
-               (void)snprintf(mstr, sizeof(mstr), "%d", i);
-               if ((dm = ht_lookup(bdevmtab, intern(mstr))) == NULL)
-                       continue;
-
-               fprintf(fp, "extern const struct bdevsw %s_bdevsw;\n",
-                           dm->dm_name);
-       }
+       for (i = 0; i <= maxbdevm ; i++)
+               dentry(fp, cdevmtab, i, 'b');
 
        fputs("\nconst struct bdevsw *bdevsw0[] = {\n", fp);
 
-       for (i = 0 ; i <= maxbdevm ; i++) {
-               (void)snprintf(mstr, sizeof(mstr), "%d", i);
-               if ((dm = ht_lookup(bdevmtab, intern(mstr))) == NULL) {
-                       fprintf(fp, "\tNULL,\n");
-               } else {
-                       fprintf(fp, "\t&%s_bdevsw,\n", dm->dm_name);
-               }
-       }
+       for (i = 0; i <= maxbdevm; i++)
+               pentry(fp, bdevmtab, i, 'b');
 
        fputs("};\n\nconst struct bdevsw **bdevsw = bdevsw0;\n", fp);
 
@@ -128,25 +145,13 @@
 
        fputs("\n/* device switch table for character device */\n", fp);
 
-       for (i = 0 ; i <= maxcdevm ; i++) {
-               (void)snprintf(mstr, sizeof(mstr), "%d", i);
-               if ((dm = ht_lookup(cdevmtab, intern(mstr))) == NULL)
-                       continue;
-
-               fprintf(fp, "extern const struct cdevsw %s_cdevsw;\n",
-                           dm->dm_name);
-       }
+       for (i = 0; i <= maxcdevm; i++)
+               dentry(fp, cdevmtab, i, 'c');
 
        fputs("\nconst struct cdevsw *cdevsw0[] = {\n", fp);
 
-       for (i = 0 ; i <= maxcdevm ; i++) {
-               (void)snprintf(mstr, sizeof(mstr), "%d", i);
-               if ((dm = ht_lookup(cdevmtab, intern(mstr))) == NULL) {
-                       fprintf(fp, "\tNULL,\n");
-               } else {
-                       fprintf(fp, "\t&%s_cdevsw,\n", dm->dm_name);
-               }
-       }
+       for (i = 0; i <= maxcdevm; i++)
+               pentry(fp, cdevmtab, i, 'c');
 
        fputs("};\n\nconst struct cdevsw **cdevsw = cdevsw0;\n", fp);