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OutputGenerator.py

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#!/usr/bin/python

"""

Runs a Java program, appends output if it's not there

-force as first argument when doing batch files forces overwrite

"""

import os, re, sys

argTag = '// {Args: '

oldOutput = re.compile("/* Output:.*?\n(.*)\n\*///:~(?s)")

def makeOutputIncludedFile(path, fileName, changeReport, force = False):

oldDir = os.getcwd()

os.chdir(path)

base = fileName.split('.')[0]

package = ''

args = ''

command = None

for line in file(fileName):

if line.startswith("} /*"):

break # Out of for loop

if line.startswith("package"):

words = line.strip().split()

package = words[1][:-1] + '.' # remove ';'

if line.startswith(argTag):

args = line[len(argTag):].strip()

assert args.rfind('}') != -1, "%s, %s" % (args, fileName)

args = " " +args[:args.rfind('}')]

if line.startswith("// {main:"):

base = line.split()[-1]

base = base[:-1]

if line.startswith("// {Exec:"):

command = line.split(':', 1)[1].strip()[:-1]

if not command:

command = "java " + package + base + args

command += " > " + base + "-output.txt"

print command

result = os.system(command)

if(result != 0):

raise Exception, "Command returned nonzero value: " + str(result)

# Read output file that was just generated:

results = file(base + "-output.txt").read().strip()

# Strip off trailing spaces on each line:

results = "\n".join([line.rstrip() for line in results.split("\n")])

results = results.replace('\t', ' ')

if results:

if force or not oldOutput.findall(file(fileName).read()):

processedText = createProcessedJavaText(results, fileName)

open(fileName, 'w').write(processedText + "\n")

if changeReport:

changeReport.write(os.path.join(path, fileName) + "\n")

return # Don't need to try for error output

##### Duplicate for standard error output:

command += " 2> " + base + "-erroroutput.txt"

print command

result = os.system(command)

if(result != 0):

raise Exception, "Command returned nonzero value: " + str(result)

# Read error file that was just generated:

results = file(base + "-erroroutput.txt").read().strip()

# Strip off trailing spaces on each line:

results = "\n".join([line.rstrip() for line in results.split("\n")])

results = results.replace('\t', ' ')

if results:

if force or not oldOutput.findall(file(fileName).read()):

processedText = createProcessedJavaText(results, fileName)

open(fileName, 'w').write(processedText + "\n")

if changeReport:

changeReport.write(os.path.join(path, fileName) + "\n")

os.chdir(oldDir)

def createProcessedJavaText(results, fileName):

processedJava = ''

for line in [line.rstrip() for line in file(fileName)]:

if line.startswith("} ///:~"):

processedJava += "} /* Output:\n" + results + "\n*///:~"

return processedJava

if line.startswith("} /* Output:"):

processedJava += line + "\n" + results + "\n*///:~" # Preserve modifiers

return processedJava

processedJava += line + "\n"

raise Exception, "No marker found at end of file " + path + " " + fileName

class ReportFile:

def __init__(self, filePath):

self.filePath = filePath

self.file = None

def write(self, line):

if not self.file:

self.file = file(self.filePath, 'w')

self.file.write(line)

print line

def close(self):

if self.file:

self.file.close()

if __name__ == "__main__":

start = os.getcwd()

args = sys.argv[1:]

forceFlag = False

if len(args):

if args[0] == "-force":

forceFlag = True

print "forceFlag = ", forceFlag

del args[0]

if len(args) > 0:

for javaSource in args:

if javaSource.endswith("."): javaSource = javaSource[:-1]

if not javaSource.endswith(".java"): javaSource += ".java"

os.system("javac " + javaSource)

makeOutputIncludedFile(os.getcwd(), javaSource, None, force = True)

else:

changeReport = ReportFile(os.path.join(start, "Changes.txt"))

for root, dirs, files in os.walk('.'):

if (os.sep + "gui") in root: continue

path = os.path.normpath(os.path.join(start,root))

print path

for name in [name for name in files if name.endswith(".java")]:

java = file(os.path.join(path, name)).read()

if "public static void main(String" in java and \

not "{RunByHand}" in java and \

not "{ThrowsException}" in java and \

not "/* (Execute to see output) *///:~" in java and \

not "} /* Same output as" in java:

if forceFlag or not "} /* Output:" in java:

print "\t", name

makeOutputIncludedFile(path, name, changeReport, force = forceFlag)

changeReport.close()

os.system("uedit32 /f Changes.txt &")