建立 MAG160C 逆向工程交接仓库

.tools/python-revlibs/elftools/construct/lib/hex.py

@@ -0,0 +1,47 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from typing_extensions import Self  # 3.11+
+
+
+# Map an integer in the inclusive range 0-255 to its string byte representation
+_printable = {i: chr(i) if 32 <= i < 128 else "." for i in range(256)}
+
+
+def hexdump(data: bytes, linesize: int) -> list[str]:
+    """
+    data is a bytes object. The returned result is a string.
+    """
+    prettylines = []
+    if len(data) < 65536:
+        fmt = "%%04X   %%-%ds   %%s"
+    else:
+        fmt = "%%08X   %%-%ds   %%s"
+    fmt = fmt % (3 * linesize - 1,)
+    for i in range(0, len(data), linesize):
+        line = data[i : i + linesize]
+        hextext = line.hex(" ")
+        rawtext = "".join(_printable[b] for b in line)
+        prettylines.append(fmt % (i, hextext, rawtext))
+    return prettylines
+
+
+class HexString(bytes):
+    """
+    Represents bytes that will be hex-dumped to a string when its string
+    representation is requested.
+    """
+    def __init__(self, data: bytes, linesize: int = 16) -> None:
+        self.linesize = linesize
+
+    def __new__(cls, data: bytes, *args: object, **kwargs: object) -> Self:
+        return bytes.__new__(cls, data)
+
+    def __str__(self) -> str:
+        if not self:
+            return "''"
+        sep = "\n"
+        return sep + sep.join(
+            hexdump(self, self.linesize))