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Allow string formatting when patching. #27

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Allow string formatting when patching. #27

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38 changes: 35 additions & 3 deletions lib/kgenlib/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -341,7 +341,6 @@ class PatchMutationSpec(BaseModel):
patch: dict
conditions: MutationCondition


class BundleMutationSpec(BaseModel):
filename: str
conditions: MutationCondition
Expand Down Expand Up @@ -444,6 +443,7 @@ def mutate(self, mutations: ContentMutateSpec):
self.prune = action.prune
if action.break_:
break

for action in mutations.bundle:
if self.match(action.conditions):
try:
Expand All @@ -465,7 +465,40 @@ def match(self, match_conditions):
return True

def patch(self, patch):
self.root.merge_update(Dict(patch), box_merge_lists="extend")
"""
Apply a patch to the content, supporting string formatting with content values.

This method applies the provided patch to the current content. If the patch
contains string values that include formatting placeholders like "{content.field}",
it will attempt to format them using values from the content.

Args:
patch (dict): The patch to apply to the content
"""
# Create a deep copy of the patch to avoid modifying the original
formatted_patch = Dict(patch.copy())

# Process the patch dictionary to format any strings
self._format_patch_values(formatted_patch)

# Apply the formatted patch
self.root.merge_update(formatted_patch, box_merge_lists="extend")

def _format_patch_values(self, patch_dict):
"""
Recursively formats string values in a patch dictionary.

Args:
patch_dict (dict): The patch dictionary to process
"""
for key, value in patch_dict.items():
if isinstance(value, dict):
self._format_patch_values(value)
elif isinstance(value, str) and "{content." in value:
try:
patch_dict[key] = value.format(content=self)
except (AttributeError, KeyError) as e:
logger.debug(f"Could not format '{value}': {e}")

def regex_patch(self, patch):
if not isinstance(patch, dict):
Expand All @@ -479,7 +512,6 @@ def regex_patch(self, patch):
patched_dict = yaml.safe_load(yaml_dump)
self.parse(Dict(patched_dict))


class BaseStore(GeneratorClass):
content_list: List[BaseContent] = []

Expand Down