Add linux specific main executable

Fix failure to handle spaces in paths for linux
Fix failure to handle .kicad_pcb not in git root

kidiff_gui.py

@@ -658,6 +658,36 @@ a:hover {
 
 # ----------------------Main Functions begin here---------------------------------------
 # 
+
+def getGitPath(prjctName, prjctPath):
+    gitRootCmd = 'cd ' + prjctPath + ' && ' + gitProg + ' rev-parse --show-toplevel'
+
+    gitRootProcess = Popen(
+        gitRootCmd,
+        shell=True,
+        stdin=PIPE,
+        stdout=PIPE,
+        stderr=PIPE,
+        close_fds=True)
+    stdout, stderr = gitRootProcess.communicate()
+
+    gitRoot = stdout.decode('utf-8')
+
+    gitPathCmd = 'cd ' + _escape_string(gitRoot) + ' && ' + gitProg + ' ls-tree -r --name-only HEAD | ' + grepProg + ' -m 1 ' + prjctName
+
+    gitPathProcess = Popen(
+        gitPathCmd,
+        shell=True,
+        stdin=PIPE,
+        stdout=PIPE,
+        stderr=PIPE,
+        close_fds=True)
+    stdout, stderr = gitPathProcess.communicate()
+
+    gitPathProcess.wait()
+
+    return stdout.decode('utf-8')
+
 def getGitDiff(diff1, diff2, prjctName, prjctPath):
     '''Given two git artifacts, write out two kicad_pcb files to their respective
     directories (named after the artifact). Returns the date and time of both commits'''
@@ -694,11 +724,13 @@ def getGitDiff(diff1, diff2, prjctName, prjctPath):
     if not os.path.exists(outputDir2):
         os.makedirs(outputDir2)
 
+    gitPath = getGitPath(prjctName, prjctPath)
+
     gitArtifact1 = 'cd ' + prjctPath + ' && ' + gitProg + ' show ' + artifact1 + \
-        ':' + prjctName + ' > ' + outputDir1 + '/' + prjctName
+        ':' + gitPath + ' > ' + outputDir1 + '/' + prjctName
 
     gitArtifact2 = 'cd ' + prjctPath + ' && ' + gitProg + ' show ' + artifact2 + \
-        ':' + prjctName + ' > ' + outputDir2 + '/' + prjctName
+        ':' + gitPath + ' > ' + outputDir2 + '/' + prjctName
 
     print(gitArtifact1, gitArtifact2)
 

plotPCB.py

@@ -5,6 +5,7 @@ Kicad plot pcb file.
 Plot variety of svg files in plot directory
 '''
 
+import sys
 import pcbnew
 from pcbnew import *