Eliminated calls to os.system(). Example IOCs now build on Windows (VS2017).

.ci-local/travis/post-prepare.py

@@ -2,26 +2,42 @@
 
 import os
 import shutil
+
 # ugly hack: copy cue.py so that it can be imported
 shutil.copy('.ci/cue.py', '.ci-local/travis')
 from cue import *
 
+def cat(filename):
+    '''
+    Print the contents of a file
+    '''
+    with open(filename, 'r') as fh:
+        for line in fh:
+            print(line.strip())
+
+def sanity_check(filename):
+    '''
+    Include the contents of a file in the travis log
+    '''
+    print("{}Contents of {}{}".format(ANSI_BLUE, filename, ANSI_RESET))
+    cat(filename)
+    print("{}End of {}{}".format(ANSI_BLUE, filename, ANSI_RESET))
+
 # Add the path to the driver module to the RELEASE.local file, since it is needed by the example IOC
 update_release_local('MOTOR_ACS', os.getenv('TRAVIS_BUILD_DIR'))
 
 # Copy the travis RELEASE.local to the configure dir
-shutil.copy("{}/RELEASE.local".format(cachedir), "configure/RELEASE.local")
-
-# Sanity check
-print("{}Contents of updated configure/RELEASE.local{}".format(ANSI_BLUE, ANSI_RESET))
-os.system('cat configure/RELEASE.local')
-print("{}End of updated configure/RELEASE.local{}".format(ANSI_BLUE, ANSI_RESET))
+filename = "configure/RELEASE.local"
+shutil.copy("{}/RELEASE.local".format(cachedir), filename)
+sanity_check(filename)
 
 # Enable the building of example IOCs
-print("{}Contents of updated configure/CONFIG_SITE.local{}".format(ANSI_BLUE, ANSI_RESET))
-os.system('echo "BUILD_IOCS = YES" > configure/CONFIG_SITE.local')
-os.system('cat configure/CONFIG_SITE.local')
-print("{}End of updated configure/CONFIG_SITE.local{}".format(ANSI_BLUE, ANSI_RESET))
+filename = "configure/CONFIG_SITE.local"
+fh = open(filename, 'w')
+fh.write("BUILD_IOCS = YES")
+fh.close()
+sanity_check(filename)
 
 # Remove cue.py
-os.system('rm -f .ci-local/travis/cue.py')
+os.remove('.ci-local/travis/cue.py')
+os.remove('.ci-local/travis/cue.pyc')