prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  pattern_create & run features
  It is annoying to have to have multiple versions of gdb to complete some of my work. I don't understand why this feature hasn't been brought over yet like gdb-peda has implemented. Reversing takes long enough, this would make our lives a little bit easier.
  
  I would like to add the pattern_create feature into pwndbg. As well as run, so that I can quickly create our cyclic values and then run our output (run < payload-100.txt) so we can check the registers in under 10 seconds without restarting the program. 
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `pwndbg/commands/cyclic.py`
  Content:
  ```
  1 from __future__ import annotations
  2 
  3 import argparse
  4 import string
  5 
  6 import gdb
  7 from pwnlib.util.cyclic import cyclic
  8 from pwnlib.util.cyclic import cyclic_find
  9 
  10 import pwndbg.commands
  11 import pwndbg.gdblib.arch
  12 from pwndbg.color import message
  13 
  14 parser = argparse.ArgumentParser(description="Cyclic pattern creator/finder.")
  15 
  16 parser.add_argument(
  17     "-a",
  18     "--alphabet",
  19     metavar="charset",
  20     default=string.ascii_lowercase,
  21     type=str.encode,
  22     help="The alphabet to use in the cyclic pattern",
  23 )
  24 
  25 parser.add_argument(
  26     "-n",
  27     "--length",
  28     metavar="length",
  29     type=int,
  30     help="Size of the unique subsequences (defaults to the pointer size for the current arch)",
  31 )
  32 
  33 group = parser.add_mutually_exclusive_group(required=False)
  34 group.add_argument(
  35     "-l",
  36     "-o",
  37     "--offset",
  38     "--lookup",
  39     dest="lookup",
  40     metavar="lookup_value",
  41     type=str,
  42     help="Do a lookup instead of printing the sequence (accepts constant values as well as expressions)",
  43 )
  44 
  45 group.add_argument(
  46     "count",
  47     type=int,
  48     nargs="?",
  49     default=100,
  50     help="Number of characters to print from the sequence (default: print the entire sequence)",
  51 )
  52 
  53 
  54 @pwndbg.commands.ArgparsedCommand(parser, command_name="cyclic")
  55 def cyclic_cmd(alphabet, length, lookup, count=100) -> None:
  56     if length:
  57         # Convert from gdb.Value
  58         length = int(length)
  59     else:
  60         length = pwndbg.gdblib.arch.ptrsize
  61 
  62     if lookup:
  63         lookup = pwndbg.commands.fix(lookup, sloppy=True)
  64 
  65         if isinstance(lookup, (gdb.Value, int)):
  66             lookup = int(lookup).to_bytes(length, pwndbg.gdblib.arch.endian)
  67         elif isinstance(lookup, str):
  68             lookup = bytes(lookup, "utf-8")
  69 
  70         if len(lookup) != length:
  71             print(
  72                 message.error(
  73                     f"Lookup pattern must be {length} bytes (use `-n <length>` to lookup pattern of different length)"
  74                 )
  75             )
  76             return
  77 
  78         hexstr = "0x" + lookup.hex()
  79         print(
  80             message.notice(
  81                 f"Finding cyclic pattern of {length} bytes: {str(lookup)} (hex: {hexstr})"
  82             )
  83         )
  84 
  85         if any(c not in alphabet for c in lookup):
  86             print(message.error("Pattern contains characters not present in the alphabet"))
  87             return
  88 
  89         offset = cyclic_find(lookup, alphabet, length)
  90 
  91         if offset == -1:
  92             print(message.error("Given lookup pattern does not exist in the sequence"))
  93         else:
  94             print(message.success(f"Found at offset {offset}"))
  95     else:
  96         sequence = cyclic(int(count), alphabet, length)
  97         print(sequence.decode())
  98
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/pwndbg/commands/cyclic.py b/pwndbg/commands/cyclic.py
  --- a/pwndbg/commands/cyclic.py
  +++ b/pwndbg/commands/cyclic.py
  @@ -30,6 +30,7 @@
       help="Size of the unique subsequences (defaults to the pointer size for the current arch)",
   )
   
  +
   group = parser.add_mutually_exclusive_group(required=False)
   group.add_argument(
       "-l",
  @@ -50,9 +51,17 @@
       help="Number of characters to print from the sequence (default: print the entire sequence)",
   )
   
  +parser.add_argument(
  +    "filename",
  +    type=str,
  +    help="Name (path) of the file to save the cyclic pattern to",
  +    default="",
  +    nargs="?",
  +)
  +
   
   @pwndbg.commands.ArgparsedCommand(parser, command_name="cyclic")
  -def cyclic_cmd(alphabet, length, lookup, count=100) -> None:
  +def cyclic_cmd(alphabet, length, lookup, count=100, filename="") -> None:
       if length:
           # Convert from gdb.Value
           length = int(length)
  @@ -93,5 +102,12 @@
           else:
               print(message.success(f"Found at offset {offset}"))
       else:
  -        sequence = cyclic(int(count), alphabet, length)
  -        print(sequence.decode())
  +        count = int(count)
  +        sequence = cyclic(count, alphabet, length)
  +
  +        if not filename:
  +            print(sequence.decode())
  +        else:
  +            with open(filename, "wb") as f:
  +                f.write(sequence)
  +                print(f"Written a cyclic sequence of length {count} to file {filename}")
  
verification_info: {"golden_diff": "diff --git a/pwndbg/commands/cyclic.py b/pwndbg/commands/cyclic.py\n--- a/pwndbg/commands/cyclic.py\n+++ b/pwndbg/commands/cyclic.py\n@@ -30,6 +30,7 @@\n     help=\"Size of the unique subsequences (defaults to the pointer size for the current arch)\",\n )\n \n+\n group = parser.add_mutually_exclusive_group(required=False)\n group.add_argument(\n     \"-l\",\n@@ -50,9 +51,17 @@\n     help=\"Number of characters to print from the sequence (default: print the entire sequence)\",\n )\n \n+parser.add_argument(\n+    \"filename\",\n+    type=str,\n+    help=\"Name (path) of the file to save the cyclic pattern to\",\n+    default=\"\",\n+    nargs=\"?\",\n+)\n+\n \n @pwndbg.commands.ArgparsedCommand(parser, command_name=\"cyclic\")\n-def cyclic_cmd(alphabet, length, lookup, count=100) -> None:\n+def cyclic_cmd(alphabet, length, lookup, count=100, filename=\"\") -> None:\n     if length:\n         # Convert from gdb.Value\n         length = int(length)\n@@ -93,5 +102,12 @@\n         else:\n             print(message.success(f\"Found at offset {offset}\"))\n     else:\n-        sequence = cyclic(int(count), alphabet, length)\n-        print(sequence.decode())\n+        count = int(count)\n+        sequence = cyclic(count, alphabet, length)\n+\n+        if not filename:\n+            print(sequence.decode())\n+        else:\n+            with open(filename, \"wb\") as f:\n+                f.write(sequence)\n+                print(f\"Written a cyclic sequence of length {count} to file {filename}\")\n", "issue": "pattern_create & run features\nIt is annoying to have to have multiple versions of gdb to complete some of my work. I don't understand why this feature hasn't been brought over yet like gdb-peda has implemented. Reversing takes long enough, this would make our lives a little bit easier.\r\n\r\nI would like to add the pattern_create feature into pwndbg. As well as run, so that I can quickly create our cyclic values and then run our output (run < payload-100.txt) so we can check the registers in under 10 seconds without restarting the program. \n", "before_files": [{"content": "from __future__ import annotations\n\nimport argparse\nimport string\n\nimport gdb\nfrom pwnlib.util.cyclic import cyclic\nfrom pwnlib.util.cyclic import cyclic_find\n\nimport pwndbg.commands\nimport pwndbg.gdblib.arch\nfrom pwndbg.color import message\n\nparser = argparse.ArgumentParser(description=\"Cyclic pattern creator/finder.\")\n\nparser.add_argument(\n    \"-a\",\n    \"--alphabet\",\n    metavar=\"charset\",\n    default=string.ascii_lowercase,\n    type=str.encode,\n    help=\"The alphabet to use in the cyclic pattern\",\n)\n\nparser.add_argument(\n    \"-n\",\n    \"--length\",\n    metavar=\"length\",\n    type=int,\n    help=\"Size of the unique subsequences (defaults to the pointer size for the current arch)\",\n)\n\ngroup = parser.add_mutually_exclusive_group(required=False)\ngroup.add_argument(\n    \"-l\",\n    \"-o\",\n    \"--offset\",\n    \"--lookup\",\n    dest=\"lookup\",\n    metavar=\"lookup_value\",\n    type=str,\n    help=\"Do a lookup instead of printing the sequence (accepts constant values as well as expressions)\",\n)\n\ngroup.add_argument(\n    \"count\",\n    type=int,\n    nargs=\"?\",\n    default=100,\n    help=\"Number of characters to print from the sequence (default: print the entire sequence)\",\n)\n\n\n@pwndbg.commands.ArgparsedCommand(parser, command_name=\"cyclic\")\ndef cyclic_cmd(alphabet, length, lookup, count=100) -> None:\n    if length:\n        # Convert from gdb.Value\n        length = int(length)\n    else:\n        length = pwndbg.gdblib.arch.ptrsize\n\n    if lookup:\n        lookup = pwndbg.commands.fix(lookup, sloppy=True)\n\n        if isinstance(lookup, (gdb.Value, int)):\n            lookup = int(lookup).to_bytes(length, pwndbg.gdblib.arch.endian)\n        elif isinstance(lookup, str):\n            lookup = bytes(lookup, \"utf-8\")\n\n        if len(lookup) != length:\n            print(\n                message.error(\n                    f\"Lookup pattern must be {length} bytes (use `-n <length>` to lookup pattern of different length)\"\n                )\n            )\n            return\n\n        hexstr = \"0x\" + lookup.hex()\n        print(\n            message.notice(\n                f\"Finding cyclic pattern of {length} bytes: {str(lookup)} (hex: {hexstr})\"\n            )\n        )\n\n        if any(c not in alphabet for c in lookup):\n            print(message.error(\"Pattern contains characters not present in the alphabet\"))\n            return\n\n        offset = cyclic_find(lookup, alphabet, length)\n\n        if offset == -1:\n            print(message.error(\"Given lookup pattern does not exist in the sequence\"))\n        else:\n            print(message.success(f\"Found at offset {offset}\"))\n    else:\n        sequence = cyclic(int(count), alphabet, length)\n        print(sequence.decode())\n", "path": "pwndbg/commands/cyclic.py"}], "after_files": [{"content": "from __future__ import annotations\n\nimport argparse\nimport string\n\nimport gdb\nfrom pwnlib.util.cyclic import cyclic\nfrom pwnlib.util.cyclic import cyclic_find\n\nimport pwndbg.commands\nimport pwndbg.gdblib.arch\nfrom pwndbg.color import message\n\nparser = argparse.ArgumentParser(description=\"Cyclic pattern creator/finder.\")\n\nparser.add_argument(\n    \"-a\",\n    \"--alphabet\",\n    metavar=\"charset\",\n    default=string.ascii_lowercase,\n    type=str.encode,\n    help=\"The alphabet to use in the cyclic pattern\",\n)\n\nparser.add_argument(\n    \"-n\",\n    \"--length\",\n    metavar=\"length\",\n    type=int,\n    help=\"Size of the unique subsequences (defaults to the pointer size for the current arch)\",\n)\n\n\ngroup = parser.add_mutually_exclusive_group(required=False)\ngroup.add_argument(\n    \"-l\",\n    \"-o\",\n    \"--offset\",\n    \"--lookup\",\n    dest=\"lookup\",\n    metavar=\"lookup_value\",\n    type=str,\n    help=\"Do a lookup instead of printing the sequence (accepts constant values as well as expressions)\",\n)\n\ngroup.add_argument(\n    \"count\",\n    type=int,\n    nargs=\"?\",\n    default=100,\n    help=\"Number of characters to print from the sequence (default: print the entire sequence)\",\n)\n\nparser.add_argument(\n    \"filename\",\n    type=str,\n    help=\"Name (path) of the file to save the cyclic pattern to\",\n    default=\"\",\n    nargs=\"?\",\n)\n\n\n@pwndbg.commands.ArgparsedCommand(parser, command_name=\"cyclic\")\ndef cyclic_cmd(alphabet, length, lookup, count=100, filename=\"\") -> None:\n    if length:\n        # Convert from gdb.Value\n        length = int(length)\n    else:\n        length = pwndbg.gdblib.arch.ptrsize\n\n    if lookup:\n        lookup = pwndbg.commands.fix(lookup, sloppy=True)\n\n        if isinstance(lookup, (gdb.Value, int)):\n            lookup = int(lookup).to_bytes(length, pwndbg.gdblib.arch.endian)\n        elif isinstance(lookup, str):\n            lookup = bytes(lookup, \"utf-8\")\n\n        if len(lookup) != length:\n            print(\n                message.error(\n                    f\"Lookup pattern must be {length} bytes (use `-n <length>` to lookup pattern of different length)\"\n                )\n            )\n            return\n\n        hexstr = \"0x\" + lookup.hex()\n        print(\n            message.notice(\n                f\"Finding cyclic pattern of {length} bytes: {str(lookup)} (hex: {hexstr})\"\n            )\n        )\n\n        if any(c not in alphabet for c in lookup):\n            print(message.error(\"Pattern contains characters not present in the alphabet\"))\n            return\n\n        offset = cyclic_find(lookup, alphabet, length)\n\n        if offset == -1:\n            print(message.error(\"Given lookup pattern does not exist in the sequence\"))\n        else:\n            print(message.success(f\"Found at offset {offset}\"))\n    else:\n        count = int(count)\n        sequence = cyclic(count, alphabet, length)\n\n        if not filename:\n            print(sequence.decode())\n        else:\n            with open(filename, \"wb\") as f:\n                f.write(sequence)\n                print(f\"Written a cyclic sequence of length {count} to file {filename}\")\n", "path": "pwndbg/commands/cyclic.py"}]}