add proc-cmdline parser

jc/lib.py

@@ -113,6 +113,7 @@ parsers: List[str] = [
     'postconf',
     'proc',
     'proc-buddyinfo',
+    'proc-cmdline',
     'proc-consoles',
     'proc-cpuinfo',
     'proc-crypto',

jc/parsers/proc_cmdline.py

@@ -0,0 +1,112 @@
+"""jc - JSON Convert `/proc/cmdline` file parser
+
+Usage (cli):
+
+    $ cat /proc/cmdline | jc --proc
+
+or
+
+    $ jc /proc/cmdline
+
+or
+
+    $ cat /proc/cmdline | jc --proc-cmdline
+
+Usage (module):
+
+    import jc
+    result = jc.parse('proc_cmdline', proc_cmdline_file)
+
+Schema:
+
+    [
+      {
+        "foo":     string,
+        "bar":     boolean,
+        "baz":     integer
+      }
+    ]
+
+Examples:
+
+    $ foo | jc --foo -p
+    []
+
+    $ foo | jc --foo -p -r
+    []
+"""
+import shlex
+from typing import List, Dict
+from jc.jc_types import JSONDictType
+import jc.utils
+
+
+class info():
+    """Provides parser metadata (version, author, etc.)"""
+    version = '1.0'
+    description = '`/proc/cmdline` file parser'
+    author = 'Kelly Brazil'
+    author_email = 'kellyjonbrazil@gmail.com'
+    compatible = ['linux']
+    tags = ['file']
+    hidden = True
+
+
+__version__ = info.version
+
+
+def _process(proc_data: JSONDictType) -> JSONDictType:
+    """
+    Final processing to conform to the schema.
+
+    Parameters:
+
+        proc_data:   (List of Dictionaries) raw structured data to process
+
+    Returns:
+
+        Dictionary. Structured to conform to the schema.
+    """
+    return proc_data
+
+
+def parse(
+    data: str,
+    raw: bool = False,
+    quiet: bool = False
+) -> JSONDictType:
+    """
+    Main text parsing function
+
+    Parameters:
+
+        data:        (string)  text data to parse
+        raw:         (boolean) unprocessed output if True
+        quiet:       (boolean) suppress warning messages if True
+
+    Returns:
+
+        Dictionary. Raw or processed structured data.
+    """
+    jc.utils.compatibility(__name__, info.compatible, quiet)
+    jc.utils.input_type_check(data)
+
+    raw_output: Dict = {}
+    options: List = []
+
+    if jc.utils.has_data(data):
+
+        split_line = shlex.split(data)
+
+        for item in split_line:
+            if '=' in item:
+                key, val = item.split('=', maxsplit=1)
+                raw_output[key] = val
+
+            else:
+                options.append(item)
+
+    if options:
+        raw_output['_options'] = options
+
+    return raw_output if raw else _process(raw_output)