lunaix-os/scripts/build-tools/shared/shconfig/commands.py

   1 import textwrap
   2 import pydoc
   3 import re
   4
   5 from .common import CmdTable, ShconfigException
   6 from .common import select, cmd, get_config_name
   7
   8 from lcfg2.config   import ConfigEnvironment
   9 from lcfg2.common   import NodeProperty, NodeDependency, ConfigNodeError
  10
  11 class Commands(CmdTable):
  12     def __init__(self, env: ConfigEnvironment):
  13         super().__init__()
  14
  15         self.__env = env
  16
  17     def __get_node(self, name: str):
  18         node_name = name.removeprefix("CONFIG_").lower()
  19         node = self.__env.get_node(node_name)
  20         if node is None:
  21             raise ShconfigException(f"no such config: {name}")
  22         return node
  23
  24     def __get_opt_line(self, node, color_hint = False):
  25         aligned = 40
  26         name    = f"CONFIG_{node._name.upper()}"
  27         value   = NodeProperty.Value[node]
  28         enabled = NodeProperty.Enabled[node]
  29         hidden  = NodeProperty.Hidden[node]
  30         ro      = NodeProperty.Readonly[node]
  31
  32         status  = f"{select(not enabled, 'x', '.')}"          \
  33                 f"{select(ro, 'r', '.')}"          \
  34                 f"{select(hidden, 'h', '.')}"      \
  35
  36         val_txt = f"{value if value is not None else '<?>'}"
  37
  38         if value is True:
  39             val_txt = "y"
  40         elif value is False:
  41             val_txt = "n"
  42         elif isinstance(value, str):
  43             val_txt = f'"{val_txt}"'
  44
  45         line = f"[{status}] {name}"
  46         to_pad = max(aligned - len(line), 4)
  47         line = f"{line} {'.' * to_pad} {val_txt}"
  48
  49         if color_hint and not enabled:
  50             line = f"\x1b[90;49m{line}\x1b[0m"
  51         return line
  52
  53     def __format_config_list(self, nodes):
  54         lines = []
  55         disabled = []
  56
  57         for node in nodes:
  58             _l = disabled if not NodeProperty.Enabled[node] else lines
  59             _l.append(self.__get_opt_line(node, True))
  60
  61         if disabled:
  62             lines += [
  63                 "",
  64                 "\t---- disabled ----",
  65                 "",
  66                 *disabled
  67             ]
  68
  69         return lines
  70
  71     @cmd("help", "h")
  72     def __fn_help(self):
  73         """
  74         Print this message
  75         """
  76
  77         print()
  78         for exe in self._cmd_map:
  79             print(exe, "\n")
  80
  81     @cmd("show", "ls")
  82     def __fn_show(self):
  83         """
  84         Show all configurable options
  85         """
  86
  87         lines = [
  88             "Display format:",
  89             "",
  90             "        (flags) CONFIG_NAME ..... VALUE",
  91             " ",
  92             "   (flags)",
  93             "      x    Config is disabled",
  94             "      r    Read-Only config",
  95             "      h    Hidden config",
  96             "",
  97             "   VALUE (bool)",
  98             "      y    True",
  99             "      n    False",
 100             "",
 101             "",
 102             "Defined configuration terms",
 103             ""
 104         ]
 105
 106         lines += self.__format_config_list(self.__env.terms())
 107
 108         pydoc.pager("\n".join(lines))
 109
 110     @cmd("set")
 111     def __fn_set(self, name: str, value):
 112         """
 113         Update a configurable option's value
 114         """
 115
 116         node = self.__get_node(name)
 117         if node is None:
 118             raise ShconfigException(f"no such config: {name}")
 119
 120         if NodeProperty.Readonly[node]:
 121             raise ShconfigException(f"node is read only")
 122
 123         try:
 124             NodeProperty.Value[node] = value
 125             self.__env.refresh()
 126         except ConfigNodeError as e:
 127             print(e)
 128
 129     @cmd("dep")
 130     def __fn_dep(self, name: str):
 131         """
 132         Show the dependency chain and boolean conditionals
 133         """
 134
 135         def __print_dep_recursive(env, node, inds = 0):
 136             indent = " "*inds
 137             dep: NodeDependency = NodeProperty.Dependency[node]
 138
 139             state = 'enabled' if NodeProperty.Value[node] else 'disabled'
 140             print(f"{indent}* {node._name} (currently {state})")
 141             if dep is None:
 142                 return
 143
 144             print(f"  {indent}predicate: {dep._expr}")
 145             print(f"  {indent}dependents:")
 146             for name in dep._names:
 147                 n = env.get_node(name)
 148                 __print_dep_recursive(env, n, inds + 6)
 149
 150         node = self.__get_node(name)
 151         __print_dep_recursive(self.__env, node)
 152
 153     @cmd("opt", "val", "v")
 154     def __fn_opt(self, name: str):
 155         """
 156         Show the current value and flags of selected options
 157         """
 158
 159         node = self.__get_node(name)
 160         print(self.__get_opt_line(node))
 161
 162     @cmd("what", "help", "?")
 163     def __fn_what(self, name: str):
 164         """
 165         Show the documentation associated with the option
 166         """
 167
 168         node = self.__get_node(name)
 169         help = NodeProperty.HelpText[node]
 170         help = "<no help message>" if not help else help
 171
 172         print()
 173         print(textwrap.indent(help.strip(), "  |\t", lambda _:True))
 174         print()
 175
 176
 177     @cmd("affects")
 178     def __fn_affect(self, name: str):
 179         """
 180         Show the effects of this option on other options
 181         """
 182
 183         node = self.__get_node(name)
 184         link = NodeProperty.Linkage[node]
 185
 186         if not link:
 187             return
 188
 189         for other, exprs in link.linkages():
 190             print(f" {other}:")
 191             for expr in exprs:
 192                 print(f"   > when {expr}")
 193             print()
 194
 195     @cmd("find")
 196     def __fn_search(self, fuzz: str):
 197         """
 198         Perform fuzzy search on configs (accept regex)
 199         """
 200
 201         nodes = []
 202         expr = re.compile(fuzz)
 203         for node in self.__env.terms():
 204             name = get_config_name(node._name)
 205             if not expr.findall(name):
 206                 continue
 207             nodes.append(node)
 208
 209         if not nodes:
 210             print("no matches")
 211             return
 212
 213         lines = self.__format_config_list(nodes)
 214
 215         pydoc.pager("\n".join(lines))