src/lib/bwgQuery.c 1.24

Index: src/lib/bwgQuery.c
===================================================================
RCS file: /projects/compbio/cvsroot/kent/src/lib/bwgQuery.c,v
retrieving revision 1.23
retrieving revision 1.24
diff -b -B -U 4 -r1.23 -r1.24
--- src/lib/bwgQuery.c	12 Nov 2009 23:15:52 -0000	1.23
+++ src/lib/bwgQuery.c	3 Jun 2010 18:08:37 -0000	1.24
@@ -387,4 +387,17 @@
 bigWigSummaryArray(bwf, chrom, start, end, summaryType, 1, &arrayOfOne);
 return arrayOfOne;
 }
 
+boolean isBigWig(char *fileName)
+/* Peak at a file to see if it's bigWig */
+{
+FILE *f = mustOpen(fileName, "rb");
+bits32 sig;
+mustReadOne(f, sig);
+fclose(f);
+if (sig == bigWigSig)
+    return TRUE;
+sig = byteSwap32(sig);
+return sig == bigWigSig;
+}
+