diff options
Diffstat (limited to 'roverlay/ebuild/abstractcomponents.py')
| -rw-r--r-- | roverlay/ebuild/abstractcomponents.py | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/roverlay/ebuild/abstractcomponents.py b/roverlay/ebuild/abstractcomponents.py index 73dac03..019c252 100644 --- a/roverlay/ebuild/abstractcomponents.py +++ b/roverlay/ebuild/abstractcomponents.py @@ -5,11 +5,23 @@ INDENT = '\t' def listlike ( ref ): + """Returns True if ref is listlike (a non-str iterable).""" return hasattr ( ref, '__iter__' ) and not isinstance ( ref, str ) class ListValue ( object ): + """An evar value with a list of elements.""" def __init__ ( self, value, indent_level=1, empty_value=None ): + """Initializes a ListValue. + + arguments: + * value -- + * indent_level -- indention level ('\t') for extra value lines + * empty_value -- if set: a string value that is always part + of this ListValue's elements but ignored + by len(). + Use cases are '${IUSE:-}' in the IUSE var etc. + """ self.set_level ( indent_level ) self.empty_value = empty_value @@ -23,13 +35,14 @@ class ListValue ( object ): self.val_join = ' ' self.set_value ( value ) - + # --- end of __init__ (...) --- def __len__ ( self ): l = len ( self.value ) return l if self.empty_value is None else l - 1 def set_level ( self, level ): + """Sets the indention level.""" self.level = level self.var_indent = (level - 1) * INDENT self.val_indent = level * INDENT @@ -37,6 +50,7 @@ class ListValue ( object ): # --- end of set_level (...) --- def set_value ( self, value ): + """Sets the value.""" self.value = list() if self.empty_value is not None: self.value.append ( self.empty_value ) @@ -44,6 +58,7 @@ class ListValue ( object ): # --- end of set_value (...) --- def add_value ( self, value ): + """Adds/Appends a value.""" if value is None: pass elif listlike ( value ): @@ -55,6 +70,7 @@ class ListValue ( object ): add = add_value def to_str ( self ): + """Returns a string representing this ListValue.""" if len ( self.value ) == 0: ret = "" elif len ( self.value ) == 1: @@ -73,21 +89,37 @@ class ListValue ( object ): class EbuildVar ( object ): + """An ebuild variable.""" def __init__ ( self, name, value, priority ): + """Initializes an EbuildVar. + + arguments: + * name -- e.g. 'SRC_URI' + * value -- + * priority -- used for sorting (e.g. 'R_SUGGESTS' before 'DEPEND'), + lower means higher priority + """ self.name = name self.priority = priority self.value = value self.set_level ( 0 ) def set_level ( self, level ): + """Sets the indention level.""" self.level = level self.indent = self.level * INDENT if hasattr ( self.value, 'set_level' ): self.value.set_level ( level + 1 ) # --- end of set_level (...) --- - def active ( self ): return True + def active ( self ): + """Returns True if this EbuildVar is enabled and has a string to + return. + (EbuildVar's active() returns always True, derived classes may + override this.) + """ + return True def __str__ ( self ): return '%s%s="%s"' % ( self.indent, self.name, self.value ) |