[Diff][Fixed] Problems with `current` mode

- didn't apply global variants
- didn't honor KiCad native DNP flags, they need a filter

CHANGELOG.md

@@ -119,9 +119,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
     temporal, generating problems with the plot outputs, like pcb_print
   - Project options not preserved, i.e. set_text_variables failing
   - Bottom QRs should be mirrored in the Y axis
-- ERC:
-  - Problems creating report files without extension (KiCad 7 odd behavior)
-    (#529)
+- Diff
+  - `current`: didn't apply global variants
+  - `current`: didn't honor KiCad native DNP flags, they need a filter
 
 
 ## [1.6.3] - 2023-06-26

docs/samples/generic_plot.kibot.yaml

@@ -762,6 +762,9 @@ outputs:
       # The `stats` mode is used to meassure the amount of difference. In this mode all
       # changes are red, but you can abort if the difference is bigger than certain threshold
       diff_mode: 'red_green'
+      # [string|list(string)='_none'] Name of the filter to mark components as not fitted.
+      # A short-cut to use for simple cases where a variant is an overkill
+      dnf_filter: '_none'
       # [boolean=false] When `old_type` and/or `new_type` are `git` KiBot will checkout the indicated point.
       # Before doing it KiBot will stash any change. Under some circumstances git could fail
       # to do a checkout, even after stashing, this option can workaround the problem.
@@ -803,6 +806,9 @@ outputs:
       output: '%f-%i%I%v.%x'
       # [boolean=true] Compare the PCB, otherwise compare the schematic
       pcb: true
+      # [string|list(string)='_none'] Name of the filter to transform fields before applying other filters.
+      # A short-cut to use for simple cases where a variant is an overkill
+      pre_transform: '_none'
       # [number=0] [0,1000000] Error threshold for the `stats` mode, 0 is no error. When specified a
       # difference bigger than the indicated value will make the diff fail.
       # KiBot will return error level 29 and the diff generation will be aborted
@@ -810,6 +816,8 @@ outputs:
       # [boolean=false] When creating the link name of an output file related to a variant use the variant
       # `file_id` instead of its name
       use_file_id: false
+      # [string=''] Board variant to apply
+      variant: ''
     layers: all
   # Datasheets downloader:
   - name: 'download_datasheets_example'

docs/source/configuration/outputs/diff.rst

@@ -49,6 +49,9 @@ Parameters:
       -  ``diff_mode`` :index:`: <pair: output - diff - options; diff_mode>` [string='red_green'] [red_green,stats] In the `red_green` mode added stuff is green and red when removed.
          The `stats` mode is used to meassure the amount of difference. In this mode all
          changes are red, but you can abort if the difference is bigger than certain threshold.
+      -  ``dnf_filter`` :index:`: <pair: output - diff - options; dnf_filter>` [string|list(string)='_none'] Name of the filter to mark components as not fitted.
+         A short-cut to use for simple cases where a variant is an overkill.
+
       -  ``force_checkout`` :index:`: <pair: output - diff - options; force_checkout>` [boolean=false] When `old_type` and/or `new_type` are `git` KiBot will checkout the indicated point.
          Before doing it KiBot will stash any change. Under some circumstances git could fail
          to do a checkout, even after stashing, this option can workaround the problem.
@@ -79,11 +82,15 @@ Parameters:
          Note that when no differeces are found we get a page saying *No diff*.
       -  ``only_first_sch_page`` :index:`: <pair: output - diff - options; only_first_sch_page>` [boolean=false] Compare only the main schematic page (root page).
       -  ``pcb`` :index:`: <pair: output - diff - options; pcb>` [boolean=true] Compare the PCB, otherwise compare the schematic.
+      -  ``pre_transform`` :index:`: <pair: output - diff - options; pre_transform>` [string|list(string)='_none'] Name of the filter to transform fields before applying other filters.
+         A short-cut to use for simple cases where a variant is an overkill.
+
       -  ``threshold`` :index:`: <pair: output - diff - options; threshold>` [number=0] [0,1000000] Error threshold for the `stats` mode, 0 is no error. When specified a
          difference bigger than the indicated value will make the diff fail.
          KiBot will return error level 29 and the diff generation will be aborted.
       -  ``use_file_id`` :index:`: <pair: output - diff - options; use_file_id>` [boolean=false] When creating the link name of an output file related to a variant use the variant
          `file_id` instead of its name.
+      -  ``variant`` :index:`: <pair: output - diff - options; variant>` [string=''] Board variant to apply.
 
 -  **type** :index:`: <pair: output - diff; type>` [string=''] Type of output.
 -  ``category`` :index:`: <pair: output - diff; category>` [string|list(string)=''] The category for this output. If not specified an internally defined category is used.

kibot/out_diff.py

@@ -31,7 +31,6 @@ from .gs import GS
 from .kiplot import load_any_sch, run_command, config_output, get_output_dir, run_output
 from .layer import Layer
 from .misc import DIFF_TOO_BIG, FAILED_EXECUTE
-from .optionable import BaseOptions
 from .out_base import VariantOptions
 from .registrable import RegOutput
 from .macros import macros, document, output_class  # noqa: F401
@@ -41,7 +40,7 @@ logger = log.get_logger()
 STASH_MSG = 'KiBot_Changes_Entry'
 
 
-class DiffOptions(BaseOptions):
+class DiffOptions(VariantOptions):
     def __init__(self):
         with document:
             self.output = GS.def_global_output
@@ -458,12 +457,20 @@ class DiffOptions(BaseOptions):
     def cache_current(self):
         """ The file as we interpreted it """
         if self.pcb:
-            fname, dir_name = VariantOptions.save_tmp_dir_board('diff')
+            fname, dir_name = self.save_tmp_dir_board('diff')
+            self.dirs_to_remove.append(dir_name)
         else:
-            dir_name = mkdtemp()
-            fname = GS.sch.save_variant(dir_name)
-            GS.copy_project_sch(dir_name)
-        self.dirs_to_remove.append(dir_name)
+            if self._comps:
+                # We have a variant/filter applied
+                dir_name = mkdtemp()
+                fname = GS.sch.save_variant(dir_name)
+                GS.copy_project_sch(dir_name)
+                self.dirs_to_remove.append(dir_name)
+            else:
+                # Just use the current file
+                # Note: The KiCad 7 DNP field needs some filter to be honored
+                dir_name = GS.sch_dir
+                fname = os.path.basename(GS.sch_file)
         res = self.cache_file(os.path.join(dir_name, fname))
         self.git_hash = 'Current'
         return res