| 1 | #!/usr/bin/env python3
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| 2 |
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| 3 | # SPDX-License-Identifier: MIT
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| 4 | # Copyright 2023 The LFS Editors
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| 5 |
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| 6 | # Stupid script to render "mconf"-style kernel configuration
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| 7 | # Usage: kernel-config.py [path to kernel tree] [needed config].toml
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| 8 | # The toml file should be like:
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| 9 | # for bool and tristate:
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| 10 | # EXT4="*"
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| 11 | # DRM="*M"
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| 12 | # EXPERT=" "
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| 13 | # DRM_I915="*M"
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| 14 | # for choice:
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| 15 | # HIGHMEM64G="X"
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| 16 | # an entry with comment:
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| 17 | # DRM_I915 = { value = " *M", comment = "for i915, crocus, or iris" }
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| 18 |
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| 19 | choice_bit = 1 << 30
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| 20 | ind0 = 0
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| 21 | ind1 = 0
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| 22 | menu_id = 1
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| 23 | stack = []
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| 24 | if_stack = []
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| 25 |
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| 26 | expand_var_mp = { 'SRCARCH': 'x86' }
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| 27 | main_dep = {}
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| 28 |
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| 29 | def expand_var(s):
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| 30 | for k in expand_var_mp:
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| 31 | s = s.replace('$(' + k + ')', expand_var_mp[k])
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| 32 | return s
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| 33 |
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| 34 | def pop_stack(cond):
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| 35 | global ind0, ind1, stack
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| 36 | assert(cond(stack[-1][0]))
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| 37 | s, i0, i1, _ = stack[-1]
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| 38 | stack = stack[:-1]
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| 39 | ind0 -= i0
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| 40 | ind1 -= i1
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| 41 |
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| 42 | def pop_stack_while(cond):
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| 43 | while stack and cond(stack[-1][0]):
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| 44 | pop_stack(cond)
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| 45 |
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| 46 | def cur_menu():
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| 47 | global stack
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| 48 | return stack[-1][3] if stack else 0
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| 49 |
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| 50 | def cur_if():
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| 51 | global if_stack
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| 52 | return if_stack[-1][:] if if_stack else []
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| 53 |
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| 54 | def clean_dep(d):
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| 55 | d = d.strip()
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| 56 | if d.endswith('=y') or d.endswith('=M'):
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| 57 | d = d[:-2]
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| 58 | elif d.endswith(' != ""'):
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| 59 | d = d[:-6]
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| 60 | return d
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| 61 |
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| 62 | def parse_config(buf):
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| 63 | global ind0, ind1, stack, menu_id
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| 64 | is_choice = buf[0].strip() == 'choice'
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| 65 | is_menu = buf[0].startswith('menu') or is_choice
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| 66 | is_nonconfig_menu = buf[0].startswith('menu ') or is_choice
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| 67 | key = None if is_nonconfig_menu else buf[0].split()[1].strip()
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| 68 | title = buf[0][len('menu '):] if is_nonconfig_menu else None
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| 69 | deps = ['menu'] + cur_if()
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| 70 | klass = None
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| 71 |
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| 72 | for line in buf[1:]:
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| 73 | line = line.strip()
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| 74 | if line.startswith('depends on '):
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| 75 | new_deps = line[len('depends on '):].split('&&')
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| 76 | deps += [clean_dep(x) for x in new_deps]
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| 77 | elif line.startswith('prompt'):
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| 78 | title = line[len('prompt '):]
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| 79 | else:
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| 80 | for prefix in ['tristate', 'bool', 'string']:
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| 81 | if line.startswith(prefix + ' '):
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| 82 | title = line[len(prefix) + 1:]
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| 83 | klass = prefix
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| 84 | elif line == prefix:
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| 85 | klass = prefix
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| 86 | elif line.startswith('def_' + prefix + ' '):
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| 87 | klass = prefix
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| 88 | else:
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| 89 | continue
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| 90 |
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| 91 | if '"' in line:
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| 92 | tail = line[line.rfind('"') + 1:].strip()
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| 93 | if tail[:3] == 'if ':
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| 94 | deps += [clean_dep(x) for x in tail[3:].split('&&')]
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| 95 |
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| 96 | pop_stack_while(lambda x: x not in deps)
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| 97 |
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| 98 | menu_id += is_menu
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| 99 | internal_key = key or menu_id
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| 100 | if stack:
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| 101 | fa = stack[-1][0]
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| 102 | if fa == 'menu':
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| 103 | fa = cur_menu() & ~choice_bit
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| 104 | main_dep[internal_key] = fa
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| 105 |
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| 106 | val = known_config.get(key)
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| 107 | comment = None
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| 108 | forced = None
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| 109 |
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| 110 | if type(val) == dict:
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| 111 | comment = val.get('comment')
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| 112 | forced = val.get('forced')
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| 113 | val = val['value']
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| 114 |
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| 115 | klass = klass or 'string'
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| 116 | if title:
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| 117 | title = title.strip().lstrip('"')
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| 118 | title = title[:title.find('"')]
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| 119 |
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| 120 | if not val:
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| 121 | pass
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| 122 | elif klass == 'string':
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| 123 | val = '(' + val + ')'
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| 124 | else:
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| 125 | assert((val == 'X') == bool(cur_menu() & choice_bit))
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| 126 | if (val == 'X'):
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| 127 | val = '(X)'
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| 128 | else:
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| 129 | val = list(val)
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| 130 | val.sort()
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| 131 | for c in val:
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| 132 | if c not in 'M* ' or (c == 'M' and klass != 'tristate'):
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| 133 | raise Exception('unknown setting %s for %s' % (c, key))
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| 134 | bracket = None
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| 135 | if klass == 'tristate' and forced != '*' :
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| 136 | bracket = '{}' if forced else '<>'
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| 137 | else:
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| 138 | bracket = '--' if forced else '[]'
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| 139 |
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| 140 | val = bracket[0] + '/'.join(val) + bracket[1]
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| 141 |
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| 142 | arrow = ' --->' if is_menu else ''
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| 143 | r = [ind0, val, ind1, title, arrow, internal_key, cur_menu(), comment]
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| 144 |
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| 145 | # Don't indent for untitled (internal) entries
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| 146 | x = 2 if title else 0
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| 147 |
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| 148 | key = key or 'menu'
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| 149 | menu = (menu_id if is_menu else cur_menu())
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| 150 | menu |= choice_bit if is_choice else 0
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| 151 | stack_ent = (key, 2, 0, menu) if is_menu else (key, 0, x, menu)
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| 152 | ind0 += stack_ent[1]
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| 153 | ind1 += stack_ent[2]
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| 154 | stack += [stack_ent]
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| 155 |
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| 156 | return r
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| 157 |
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| 158 | def load_kconfig(file):
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| 159 | global ind0, ind1, stack, path, menu_id, if_stack
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| 160 | r = []
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| 161 | config_buf = []
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| 162 | with open(path + file) as f:
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| 163 | for line in f:
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| 164 | if config_buf:
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| 165 | if not (line.startswith('\t') or line.startswith(' ')):
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| 166 | r += [parse_config(config_buf)]
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| 167 | config_buf = []
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| 168 | else:
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| 169 | config_buf += [line]
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| 170 | continue
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| 171 | if line.startswith('source') or line.startswith('\tsource'):
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| 172 | sub = expand_var(line.strip().split()[1].strip('"'))
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| 173 | r += load_kconfig(sub)
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| 174 | elif line.startswith('config') or line.startswith('menu'):
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| 175 | config_buf = [line]
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| 176 | elif line.startswith('choice'):
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| 177 | config_buf = [line]
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| 178 | elif line.startswith('endmenu') or line.startswith('endchoice'):
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| 179 | pop_stack_while(lambda x: x != 'menu')
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| 180 | pop_stack(lambda x: x == 'menu')
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| 181 | elif line.startswith('if '):
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| 182 | line = line[3:]
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| 183 | top = cur_if()
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| 184 | top += [x.strip() for x in line.split("&&")]
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| 185 | if_stack += [top]
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| 186 | elif line.startswith('endif'):
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| 187 | if_stack = if_stack[:-1]
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| 188 | return r
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| 189 |
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| 190 | known_config = {}
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| 191 |
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| 192 | def escape(x):
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| 193 | return x.replace('<', '<').replace('>', '>')
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| 194 |
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| 195 | from sys import argv
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| 196 | import tomllib
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| 197 |
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| 198 | path = argv[1]
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| 199 | if path[-1] != '/':
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| 200 | path += '/'
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| 201 | with open(argv[2], 'rb') as f:
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| 202 | known_config = tomllib.load(f)
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| 203 |
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| 204 | r = load_kconfig('Kconfig')
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| 205 |
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| 206 | # Refcount all menus
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| 207 |
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| 208 | index_ikey = {}
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| 209 | for i in reversed(range(len(r))):
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| 210 | index_ikey[r[i][5]] = i
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| 211 |
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| 212 | for i in reversed(range(len(r))):
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| 213 | if r[i][1] != None:
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| 214 | key = r[i][5]
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| 215 | fa = main_dep.get(key)
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| 216 | if not fa:
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| 217 | continue
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| 218 | j = index_ikey[fa]
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| 219 | if type(fa) == int or not r[j][3]:
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| 220 | # The main dependency is a menu or untitled magic entry,
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| 221 | # just mark it used
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| 222 | r[j][1] = ''
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| 223 | if r[j][1] is None:
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| 224 | raise Exception('[%s] needs unselected [%s]' % (key, fa))
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| 225 |
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| 226 | r = [i for i in r if i[1] != None and i[3]]
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| 227 |
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| 228 | # Now we are going to pretty-print r
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| 229 |
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| 230 | ## Calculate the maximum value length for each menu
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| 231 | max_val_len = {}
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| 232 | for _, val, _, _, _, _, menu, _ in r:
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| 233 | x = max_val_len.get(menu) or 0
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| 234 | max_val_len[menu] = max(x, len(val))
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| 235 |
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| 236 | ## Output
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| 237 |
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| 238 | max_line = 80
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| 239 | buf = []
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| 240 |
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| 241 | done = [x[5] for x in r] + ['revision']
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| 242 | for i in known_config:
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| 243 | if i not in done:
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| 244 | raise Exception("%s seems not exist" % i)
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| 245 |
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| 246 | sep = known_config.get('separate_toplevel_menu')
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| 247 |
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| 248 | for i0, val, i1, title, arrow, key, menu, comment in r:
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| 249 | rem = max_line
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| 250 |
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| 251 | if val:
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| 252 | val += (max_val_len[menu] - len(val)) * ' '
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| 253 |
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| 254 | rem -= i0 + i1 + bool(val) + len(val)
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| 255 | line = i0 * ' ' + escape(val) + (i1 + bool(val)) * ' '
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| 256 |
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| 257 | rem -= len(arrow)
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| 258 |
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| 259 | if len(title) > rem:
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| 260 | title = title[:rem - 3] + '...'
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| 261 |
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| 262 | b = title.lstrip('YyMmNnHh')
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| 263 | a = title[:len(title) - len(b)]
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| 264 | b0 = "<emphasis role='blue'>" + escape(b[0]) + "</emphasis>"
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| 265 | line += escape(a) + b0 + escape(b[1:]) + escape(arrow)
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| 266 |
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| 267 | rem -= len(title)
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| 268 |
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| 269 | key = ' [' + key + ']' if type(key) == str else ''
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| 270 |
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| 271 | if len(key) <= rem:
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| 272 | line += (rem - len(key)) * ' ' + key
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| 273 | else:
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| 274 | key = '... ' + key
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| 275 | line += '\n' + ' ' * (max_line - len(key)) + key
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| 276 | if type(comment) == str:
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| 277 | comment = [comment]
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| 278 | if comment:
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| 279 | comment = '\n'.join([' ' * i0 + '# ' + line for line in comment])
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| 280 | buf += [escape(comment) + ':']
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| 281 |
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| 282 | if not menu and buf:
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| 283 | buf += ['']
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| 284 |
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| 285 | buf += [line.rstrip()]
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| 286 |
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| 287 | from jinja2 import Template
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| 288 |
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| 289 | t = Template('''<?xml version="1.0" encoding="ISO-8859-1"?>
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| 290 | <!DOCTYPE note PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 291 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
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| 292 | <!-- Automatically generated by kernel-config.py
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| 293 | DO NOT EDIT! -->
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| 294 | <screen{{ rev }}>{{ '\n'.join(buf) }}</screen>''')
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| 295 |
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| 296 | rev = known_config.get('revision')
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| 297 | rev = ' revision="%s"' % rev if rev else ''
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| 298 | print(t.render(rev = rev, buf = buf))
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