вынес возможность удаления проектов из файла решения в api

scripts/instruments.py

@@ -2,6 +2,7 @@ from subprocess import call
 import shutil
 import os
 import re
+import sln_toolkit as sln
 
 def MapToBackupName(origin_path):
 
@@ -54,19 +55,8 @@ def ResetDirectory(base_dir, relative_path_to_files):
 	return None
 
 def RemoveProjectFromSolution(abs_path_to_sln, project_names):
-
-	sln_file = open(abs_path_to_sln, 'r+')
-	content = sln_file.read()
-
-	for pn in project_names:
-		reg_pattern = r'\n*Project.*?"{0}".*?\n*EndProject'.format(pn)
-		content = re.sub(reg_pattern, "", content)
-
-	# override file
-	sln_file.seek(0)
-	sln_file.write(content)
-	sln_file.truncate()
-	sln_file.close()
+	toolkit = sln.SolutionToolkit(abs_path_to_sln)
+	toolkit.RemoveProjects(project_names)
 
 def CleanSolution(mdtool, abs_path_to_sln, config):
 

scripts/sln_toolkit.py

@@ -0,0 +1,38 @@
+import re
+
+class SolutionToolkitBase:
+	def RemoveProjectSectionsFrom(self, sln_file_content, project_names):
+		for pn in project_names:
+			reg_pattern = r'\n*Project.*?"{0}".*?\n*EndProject'.format(pn)
+			sln_file_content = re.sub(reg_pattern, "", sln_file_content)
+
+		return sln_file_content
+
+class SolutionToolkit(SolutionToolkitBase):
+	def __init__(self, pathToSlnFile):
+		self._sln_path = pathToSlnFile
+		self._sln_file = None
+
+	def RemoveProjects(self, project_names):
+		self.OpenSlnFile()
+		content = self.ReadSlnFileContent()
+
+		new_content = self.RemoveProjectSectionsFrom(content, project_names)
+
+		self.RewriteSlnFile(new_content)
+		self.CloseSlnFile()
+
+	def OpenSlnFile(self):
+		self._sln_file = open(self._sln_path, 'r+')
+
+	def CloseSlnFile(self):
+		self._sln_file.close()
+
+	def ReadSlnFileContent(self):
+		content = self._sln_file.read()
+		return content
+
+	def RewriteSlnFile(self, content):
+		self._sln_file.seek(0)
+		self._sln_file.write(content)
+		self._sln_file.truncate()