util: specn()

Signed-off-by: John McMaster <johndmcmaster@gmail.com>
2018-12-05 19:52:07 -08:00 · 2018-12-05 19:52:07 -08:00 · 80de887630
parent 20db34836f
commit 80de887630
1 changed files with 6 additions and 0 deletions
--- a/prjxray/util.py
+++ b/prjxray/util.py
@ -163,3 +163,9 @@ def gen_tile_bits(db_root, tilej, strict=False, verbose=False):
                    # 31_06
                    _bit_inv, (bit_addroff, bit_bitoff) = parse_tagbit(bitstr)
                    yield (baseaddr + bit_addroff, bitbase + bit_bitoff, tag)
+
+
+def specn():
+    # ex: build/specimen_001
+    specdir = os.getenv("SPECDIR")
+    return int(re.match(".*specimen_([0-9]*)", specdir).group(1), 10)