Macros updates to support multiple maps.

Add a read and write map pointer. This means you can read from a
user defined map through to the global map while pointing all
write to only the global map therefore supporting overrides
cleanly.

Print the list of loaded files when printing.

Provide helper calls for type and attributes.

source-builder/sb/macros.py

@@ -52,13 +52,15 @@ class macros:
             return self.keys
 
     def __init__(self, name = None, original = None, sbdir = '.'):
+        self.files = []
         self.macro_filter = re.compile(r'%{[^}]+}')
         if original is None:
             self.macros = {}
-            self.map = 'global'
+            self.read_map = 'global'
-            self.macros[self.map] = {}
+            self.write_map = 'global'
-            self.macros[self.map]['_cwd'] = ('dir', 'required', path.shell(os.getcwd()))
+            self.macros[self.read_map] = {}
-            self.macros[self.map]['_sbdir'] = ('dir', 'required', path.shell(sbdir))
+            self.macros[self.read_map]['_cwd'] = ('dir', 'required', path.shell(os.getcwd()))
+            self.macros[self.read_map]['_sbdir'] = ('dir', 'required', path.shell(sbdir))
         else:
             self.macros = {}
             for m in original.macros:
@@ -66,7 +68,8 @@ class macros:
                     self.macros[m] = {}
                 for k in original.macros[m]:
                     self.macros[m][k] = original.macros[m][k]
-            self.map = original.map
+            self.read_map = original.read_map
+            self.write_map = original.write_map
         if name is not None:
             self.load(name)
 
@@ -76,6 +79,8 @@ class macros:
     def __str__(self):
         text_len = 80
         text = ''
+        for f in self.files:
+            text += '> %s%s' % (f, os.linesep)
         for map in self.macros:
             text += '[%s]%s' % (map, os.linesep)
             for k in sorted(self.macros[map].keys()):
@@ -113,7 +118,7 @@ class macros:
         return text
 
     def __iter__(self):
-        return macros.macro_iterator(self.macros[self.map].keys())
+        return macros.macro_iterator(self.macros[self.read_map].keys())
 
     def __getitem__(self, key):
         macro = self.get(key)
@@ -140,7 +145,7 @@ class macros:
             raise TypeError('bad value tuple (type field): %s' % (value[0]))
         if value[1] not in ['none', 'optional', 'required', 'override']:
             raise TypeError('bad value tuple (attrib field): %s' % (value[1]))
-        self.macros[self.map][self.key_filter(key)] = value
+        self.macros[self.write_map][self.key_filter(key)] = value
 
     def __delitem__(self, key):
         self.undefine(key)
@@ -152,7 +157,7 @@ class macros:
         return len(self.keys())
 
     def keys(self):
-        k = self.macros[self.map].keys()
+        k = self.macros[self.read_map].keys()
         if map is not 'global':
             k += self.macros['global'].keys()
         return sorted(set(k))
@@ -161,11 +166,14 @@ class macros:
         if type(key) is not str:
             raise TypeError('bad key type (want str): %s' % (type(key)))
         key = self.key_filter(key)
-        if key not in self.macros[self.map].keys():
+        if key not in self.macros[self.read_map].keys():
             if key not in self.macros['global'].keys():
                 return False
         return True
 
+    def maps(self):
+        return self.macros.keys()
+
     def key_filter(self, key):
         if key.startswith('%{') and key[-1] is '}':
             key = key[2:-1]
@@ -210,7 +218,7 @@ class macros:
                         map = token
                         token = ''
                         state = 'key'
-                    elif c in string.ascii_letters or c in string.digits:
+                    elif c in string.printable and c not in string.whitespace:
                         token += c
                     else:
                         raise error.general('invalid macro map:%d: %s' % (lc, l))
@@ -265,7 +273,7 @@ class macros:
                 else:
                     raise error.internal('bad state: %s' % (state))
                 if state is 'macro':
-                    macros[map][macro[0]] = (macro[1], macro[2], macro[3])
+                    macros[map][macro[0].lower()] = (macro[1], macro[2], macro[3])
                     macro = []
                     token = ''
                     state = 'key'
@@ -278,21 +286,39 @@ class macros:
         except IOError, err:
             raise error.general('opening macro file: %s' % (path.host(name)))
         macros = self.parse(mc)
+        mc.close()
         for m in macros:
+            if m not in self.macros:
+                self.macros[m] = {}
             for mm in macros[m]:
                 self.macros[m][mm] = macros[m][mm]
-        mc.close()
+        self.files += [name]
 
     def get(self, key):
         if type(key) is not str:
             raise TypeError('bad key type: %s' % (type(key)))
         key = self.key_filter(key)
-        if self.map is not 'global'and key in self.macros[self.map]:
+        if self.read_map is not 'global'and key in self.macros[self.read_map]:
-            return self.macros[self.map][key]
+            return self.macros[self.read_map][key]
         if key in self.macros['global']:
             return self.macros['global'][key]
         return None
 
+    def get_type(self, key):
+        m = self.get(key)
+        if m is None:
+            return None
+        return m[0]
+
+    def get_attribute(self, key):
+        m = self.get(key)
+        if m is None:
+            return None
+        return m[1]
+
+    def overridden(self, key):
+        return self.get_attribute(key) == 'override'
+
     def define(self, key, value = '1'):
         if type(key) is not str:
             raise TypeError('bad key type: %s' % (type(key)))
@@ -321,6 +347,26 @@ class macros:
                 expanded = True
         return _str
 
+    def find(self, regex):
+        what = re.compile(regex)
+        keys = []
+        for key in self.keys():
+            if what.match(key):
+                keys += [key]
+        return keys
+
+    def set_read_map(self, map):
+        if map in self.macros:
+            self.read_map = map
+            return True
+        return False
+
+    def set_write_map(self, map):
+        if map in self.macros:
+            self.write_map = map
+            return True
+        return False
+
 if __name__ == "__main__":
     import copy
     import sys