[gnome-builder] find-other-file: add some special casing

[Christian Hergert <chergert src gnome org>]

commit aeba2f9d88745ac3b2d5b2d564e7c837ca4551be
Author: Christian Hergert <chergert redhat com>
Date:   Thu Dec 12 15:24:30 2019 -0800

    find-other-file: add some special casing
    
    This allows us to find files that don't exactly match by prefix, but
    are still really useful to be able to switch between.
    
    For example, handle -private.h and private.h suffix, or meson_optionx.txt
    vs meson.build, and various autotools files.

 src/plugins/find-other-file/find_other_file.py | 54 ++++++++++++++++++++++----
 1 file changed, 46 insertions(+), 8 deletions(-)
---
diff --git a/src/plugins/find-other-file/find_other_file.py b/src/plugins/find-other-file/find_other_file.py
index 05c5ec43c..1a168beb2 100644
--- a/src/plugins/find-other-file/find_other_file.py
+++ b/src/plugins/find-other-file/find_other_file.py
@@ -33,6 +33,22 @@ _ATTRIBUTES = ",".join([
     Gio.FILE_ATTRIBUTE_STANDARD_SYMBOLIC_ICON,
 ])
 
+_MESONLIKE = (
+    'meson.build',
+    'meson_options.txt',
+)
+
+_MAKELIKE = (
+    'Makefile.am',
+    'Makefile.in',
+    'Makefile',
+    'makefile',
+    'GNUmakefile',
+    'configure.ac',
+    'configure.in',
+    'autogen.sh',
+)
+
 class FindOtherFile(GObject.Object, Ide.WorkspaceAddin):
     context = None
     workspace = None
@@ -81,16 +97,38 @@ class FindOtherFile(GObject.Object, Ide.WorkspaceAddin):
             else:
                 prefix = basename
 
+            maybe = [prefix]
+
+            # Some alternates (foo-private.h fooprivate.h)
+            if prefix.endswith('-private.'):
+                maybe.append(prefix[:-9])
+            elif prefix.endswith('private.'):
+                maybe.append(prefix[:-8])
+            else:
+                maybe.append(prefix[:-1]+'-private.')
+                maybe.append(prefix[:-1]+'private.')
+
+            # Convenience to swap between make stuff
+            if basename in _MAKELIKE:
+                maybe.extend(_MAKELIKE)
+
+            # Convenience to swap between meson stuff
+            if basename in _MESONLIKE:
+                maybe.extend(_MESONLIKE)
+
             while info is not None:
                 name = info.get_name()
-                if name != basename and name.startswith(prefix):
-                    content_type = info.get_attribute_string(Gio.FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE)
-                    display_name = info.get_attribute_string(Gio.FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME)
-                    icon = info.get_attribute_object(Gio.FILE_ATTRIBUTE_STANDARD_SYMBOLIC_ICON)
-                    icon_name = icon.to_string() if icon else None
-                    file = parent.get_child(name)
-                    result = OtherFileSearchResult(file=file, icon_name=icon_name, title=display_name)
-                    files.append(result)
+                if name != basename:
+                    for m in maybe:
+                        if name.startswith(m):
+                            content_type = 
info.get_attribute_string(Gio.FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE)
+                            display_name = 
info.get_attribute_string(Gio.FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME)
+                            icon = info.get_attribute_object(Gio.FILE_ATTRIBUTE_STANDARD_SYMBOLIC_ICON)
+                            icon_name = icon.to_string() if icon else None
+                            file = parent.get_child(name)
+                            result = OtherFileSearchResult(file=file, icon_name=icon_name, 
title=display_name)
+                            files.append(result)
+                            break
 
                 info = enumerator.next_file(None)