add hotboard

git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@1257 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

2 files changed, 67 insertions, 1 deletions

diff --git a/util/Makefile b/util/Makefile
index 09f6cc32..543627b0 100644
--- a/util/Makefile
+++ b/util/Makefile
@@ -20,7 +20,7 @@ CPROG_WITH_UTIL= \
 	openvice	parse_news	openticket	topusr		\
 	indexuser	yearsold	toplazyBM	toplazyBBM	\
 	reaper		buildAnnounce	inndBM		shmctl		\
-	outmail		bbsmail
+	outmail		bbsmail		hotboard
 
 # 下面這些程式, 會直接被 compile
 CPROG_WITHOUT_UTIL= \
diff --git a/util/hotboard.c b/util/hotboard.c
new file mode 100644
index 00000000..ff4c0e88
--- /dev/null
+++ b/util/hotboard.c
@@ -0,0 +1,66 @@
+/* $Id$ */
+#include "bbs.h"
+extern SHM_t   *SHM;
+
+void usage(void)
+{
+    fprintf(stderr,
+	    "usage: hotbard [-t topn]\n");
+}
+
+struct bs {
+    int     nusers;
+    boardheader_t *b;
+} *brd;
+
+int main(int argc, char **argv)
+{
+    int     ch, topn = 20, i, nbrds, j, k, nusers;
+
+    chdir(BBSHOME);
+    while( (ch = getopt(argc, argv, "t:h")) != -1 )
+	switch( ch ){
+	case 't':
+	    topn = atoi(optarg);
+	    if( topn <= 0 ){
+		usage();
+		return 1;
+	    }
+	    break;
+	case 'h':
+	default:
+	    usage();
+	    return 1;
+	}
+
+    attach_SHM();
+    brd = (struct bs *)malloc(sizeof(struct bs) * topn);
+    brd[0].b = &SHM->bcache[0];
+    brd[0].nusers = brd[0].b->brdname[0] ? brd[0].b->nuser : 0;
+    nbrds = 1;
+
+    for( i = 1 ; i < MAX_BOARD ; ++i )
+	if( nbrds != topn ||
+	    (SHM->bcache[i].brdname[0] &&
+	     SHM->bcache[i].nuser > brd[nbrds - 1].nusers) ){
+
+	    nusers = SHM->bcache[i].nuser; // no race ?
+	    for( k = nbrds - 2 ; k >= 0 ; --k )
+		if( brd[k].nusers > nusers )
+		    break;
+
+	    if( (k + 1) < nbrds && (k + 2) < topn )
+		for( j = nbrds - 1 ; j >= k + 1 ; --j )
+		    brd[j] = brd[j - 1];
+	    brd[k + 1].nusers = nusers;
+	    brd[k + 1].b = &SHM->bcache[i];
+
+	    if( nbrds < topn )
+		++nbrds;
+	}
+
+    for( i = 0 ; i < nbrds ; ++i )
+	printf("%05d|%-12s|%s\n",
+	       brd[i].nusers, brd[i].b->brdname, brd[i].b->title);
+    return 0;
+}