Overhauled patching support

dropped patch package source module

added --patch option to the install command

added a patch command to patch an existing package

integrated patch support into the Package class

created a MergedPackage module for operations on packages already in the
pomu repo

added ways to patch an existing package

added a base package source module (template), with base classes for
package-specific metadata and the source module per se

added a list_add utility function

implemented and_, and_then, and or in util.result

1 files changed, 22 insertions, 0 deletions

diff --git a/pomu/util/misc.py b/pomu/util/misc.py
new file mode 100644
index 0000000..a6ebb1b
--- /dev/null
+++ b/pomu/util/misc.py
@@ -0,0 +1,22 @@
+"""Miscellaneous utility functions"""
+
+def list_add(dst, src):
+    """
+    Extends the target list with a scalar, or contents of the given list
+    """
+    if isinstance(src, list):
+        dst.extend(src)
+    else:
+        dst.append(src)
+
+
+def pivot(string, idx, keep_pivot=False):
+    """
+    A function to split a string in two, pivoting at string[idx].
+    If keep_pivot is set, the pivot character is included in the second string.
+    Alternatively, it is omitted.
+    """
+    if keep_pivot:
+        return (string[:idx], string[idx:])
+    else:
+        return (string[:idx], string[idx+1:])