build: Change CONFIG_* variables into a class

The class is in charge of resetting fields at will, and will be able to
maintain everything easier than if I were to do it by hand.

Signed-off-by: Bryan Schumaker <bjschuma@gmail.com>

config

@@ -1,12 +1,10 @@
 #!/usr/bin/python
 import os
 
+# Configuration variables
 CONFIG_VERSION = 6.0
 CONFIG_DEBUG   = True
 
-Export("CONFIG_VERSION", "CONFIG_DEBUG")
-
-
 
 # Set up default environment
 CONFIG_ENV = [ "-O2" ]
@@ -17,9 +15,28 @@ env = Environment( CCFLAGS = CONFIG_ENV )
 env.Append(CPPPATH = os.path.abspath("include"))
 env.Append(CXXCOMSTR = "C++ $TARGET")
 env.Append(LINKCOMSTR = "Linking $TARGET")
-Export("env", "CONFIG_ENV")
 
 
+# Class to store configuration data
+class Config:
+	# Set up reasonable defaults
+	def __init__(self):
+		self.VERSION = CONFIG_VERSION
+		self.DEBUG   = CONFIG_DEBUG
+		self.ENV     = CONFIG_ENV
+		self.FILE    = False
+
+	def reconfigure(self):
+		env.Replace( CCFLAGS = self.ENV )
+		if self.FILE: env.Append( CCFLAGS = "-DCONFIG_FILE" )
+
+	def reset(self):
+		self.FILE = False
+		self.reconfigure()
+
+CONFIG = Config()
+Export("env", "CONFIG")
+
 
 # Import SConscript files
 include = SConscript("include/Sconscript")

include/Sconscript

@@ -1,9 +1,9 @@
 #!/usr/bin/python
-Import("env", "CONFIG_DEBUG", "CONFIG_VERSION", "CONFIG_ENV")
+Import("CONFIG")
 
-if CONFIG_DEBUG:
-	CONFIG_ENV += [ "-DCONFIG_VERSION='\"%s-debug\"'" % CONFIG_VERSION ]
+if CONFIG.DEBUG:
+	CONFIG.ENV += [ "-DCONFIG_VERSION='\"%s-debug\"'" % CONFIG.VERSION ]
 else:
-	CONFIG_ENV += [ "-DCONFIG_VERSION='\"%s\"'" % CONFIG_VERSION ]
+	CONFIG.ENV += [ "-DCONFIG_VERSION='\"%s\"'" % CONFIG.VERSION ]
 
-env.Replace(CCFLAGS = CONFIG_ENV)
+CONFIG.reconfigure()

tests/Sconscript

@@ -1,31 +1,39 @@
 #!/usr/bin/python
-Import("env", "CONFIG_DEBUG")
+import os, subprocess
+Import("env", "CONFIG")
 
 
-CMD  = "tests/%s/%s.test"
-OUT  = "tests/%s/%s.run"
-GOOD = "tests/%s/%s.good"
-if CONFIG_DEBUG:
-	GOOD = "tests/%s/%s-debug.good"
+GOOD = "%s.good"
+if CONFIG.DEBUG:
+	GOOD = "%s-debug.good"
 
 
-def run_test(group, name):
-	cmd = CMD % (group, name)
-	out = OUT % (group, name)
-	good = GOOD % (group, name)
+def run_test(target, source, env):
+	res = str(target[0])
+	out = open(res, 'w')
+	ret = subprocess.call("%s" % source[0], stdout = out)
+	out.close()
 
-	return Command("%s.run" % name, None,
-			[ "%s > %s" % (cmd, out),
-			  "diff -u %s %s" % (out, good),
-			]
-		)
+	if (len(source) == 2) and (ret == 0):
+		good = str(source[1])
+		if (subprocess.call("diff -u %s %s" % (res, good), shell = True) != 0):
+			print
+	else:
+		for line in open( str(target[0]) ):
+			print line.strip()
+		print
 
-def Test(group, src, config = []):
+def Test(group, src):
 	name, extension = src.rsplit(".", 1)
+	CONFIG.reconfigure()
 
-	lib = SConscript("../../lib/Sconscript", variant_dir = ".%s" % name)
+	lib = SConscript("../../lib/Sconscript")
 	prog = env.Program("%s.test" % name, [ src ] + lib)
-	test = run_test(group, name)
+
+	src_files = [ "%s.test" % name ]
+	if os.path.exists(GOOD % name):
+		src_files += [ GOOD % name ]
+	test = Command("%s.run" % name, src_files, run_test)
 
 	Depends(test, prog)
 	AlwaysBuild(test)
@@ -38,7 +46,9 @@ Export("Test")
 
 
 # Read SConscript files
-basic = SConscript("basic/Sconscript")
-file  = SConscript("file/Sconscript")
+scripts = [ "basic", "file" ]
+for s in scripts:
+	CONFIG.reset()
+	SConscript("%s/Sconscript" % s)
 
 Default("tests")