Add hexdump utility functions

cocotbext/axi/utils.py

@@ -0,0 +1,47 @@
+"""
+
+Copyright (c) 2020 Alex Forencich
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+"""
+
+def hexdump_line(data, offset):
+    h = ""
+    c = ""
+    for ch in data[0:16]:
+        h += f"{ch:02x} "
+        c += chr(ch) if 32 < ch < 127 else "."
+    return f"{offset:08x}: {h:48} {c}"
+
+def hexdump(data, start=0, length=None, prefix="", offset=0):
+    stop = min(start+length, len(data)) if length else len(data)
+    for k in range(start, stop, 16):
+        print(prefix+hexdump_line(data[k:min(k+16,stop)], k+offset))
+
+def hexdump_lines(data, start=0, length=None, prefix="", offset=0):
+    lines = []
+    stop = min(start+length, len(data)) if length else len(data)
+    for k in range(start, stop, 16):
+        lines.append(prefix+hexdump_line(data[k:min(k+16,stop)], k+offset))
+    return lines
+
+def hexdump_str(data, start=0, length=None, prefix="", offset=0):
+    return "\n".join(hexdump_lines(data, start, length, prefix, offset))
+