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first draft refactor

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This commit is contained in:
Marcus Stoegbauer
2024-03-29 22:36:07 +01:00
parent ef0efba96a
commit baebb052b8
7 changed files with 209 additions and 167 deletions
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138
userconfig/__init__.py
View File

@@ -1,13 +1,120 @@
from userconfig.tools import get_config
import subprocess
from userconfig.checks import classes_for_host
import os
from userconfig.tools import diff, user_config_generated, backup_file, copy_file
import time
import re
import tempfile
class Userconfig():
class Userconfig:
_cfg = None
def __init__(self, cfg):
self._cfg = cfg
def build_file(self, classfiles, destfile, commentstring):
"""open all classfiles, assemble them and write the contents into a tempfile
returns the name of tempfile
:param classfiles:
:param destfile:
:param commentstring:
:return: str
"""
content = []
self._cfg.debug.stdout(" ================ build_file ===============", 1)
if commentstring != "":
self._cfg.debug.stdout(" +++ commentstring found, adding header.", 3)
content.append(commentstring + " " + self._cfg.get("stamp") + " " + time.strftime("%+") + "\n")
for f in classfiles:
self._cfg.debug.stdout(" +++ Merging %s." % f, 4)
fp = open(f, "r")
filecontent = fp.read()
fp.close()
if commentstring == "":
# look for stamp in content, replace with real stamp
if re.search(re.escape(self._cfg.get("stampreplace")), filecontent):
self._cfg.debug.stdout(" +++ commentstring empty, replacing stamp in file", 3)
filecontent = re.sub(re.escape(self._cfg.get("stampreplace")), self._cfg.get("stamp"),
filecontent)
content.append(filecontent)
(tempfd, tempfilename) = tempfile.mkstemp(prefix=os.path.basename(destfile), dir="/tmp")
try:
fp = os.fdopen(tempfd, "w")
except Exception as e:
self._cfg.debug.stderr(f"Cannot write to temporary file {tempfilename}: {e}")
os.remove(tempfilename)
return False
self._cfg.debug.stdout(" +++ Writing merged files into tempfile %s." % tempfilename, 3)
for block in content:
fp.write(block)
fp.write("\n")
fp.close()
self._cfg.debug.stdout(" ================ build_file ===============", 1)
return tempfilename
def process_all_files(self, destfiles, dir_config):
"""processes all files in destfiles, generate files from classes, compare and copy if necessary"""
self._cfg.debug.stdout(" ================ process_all_files ===============", 1)
for df in destfiles.keys():
self._cfg.debug.stdout(" ??? Processing source files for %s." % df, 2)
if not os.path.exists(os.path.dirname(df)):
self._cfg.debug.stdout(" +++ Directory %s does not exist, creating" % os.path.dirname(df), 1)
os.mkdir(os.path.dirname(df))
if not os.path.isdir(os.path.dirname(df)):
self._cfg.debug.stdout(f" --- Destination directory {os.path.dirname(df)} does not exist, skipping.",
1)
return False
# assemble file to tmp
commentstring = ""
if dir_config.check("Main", "commentstring"):
commentstring = dir_config.get("Main", "commentstring")
self._cfg.debug.stdout(" +++ Found commentstring %s in %s" % (commentstring, df), 3)
tempfilename = self.build_file(destfiles[df], df, commentstring)
if not tempfilename:
self._cfg.debug.stdout(" --- Error while creating temp file for %s, skipping." % df, 1)
continue
self._cfg.debug.stdout(" +++ Merged files %s for %s into %s" % (str(destfiles[df]), df, tempfilename), 2)
# diff assembled file and config file
if diff(df, tempfilename, commentstring, self._cfg):
self._cfg.debug.stdout("File %s has changed" % df, 0)
if not user_config_generated(df, self._cfg):
self._cfg.debug.stdout(" +++ %s not generated by userconfig, backing up." % df, 2)
# file not generated from userconfig -> back up
backup_file(df, self._cfg)
# copy tmp file to real location
self._cfg.debug.stdout("Copy %s to %s." % (tempfilename, df), 0)
copy_file(tempfilename, df, self._cfg)
# remove tmp
self._cfg.debug.stdout(" +++ Removing temporary file %s." % tempfilename, 2)
os.remove(tempfilename)
self._cfg.debug.stdout(" ================ process_all_files ===============", 1)
def workconf(self, directory, depth=2):
"""walks through directory, collecting all filenames, returns list of all filenames"""
dirs = os.listdir(directory)
ret = []
self._cfg.debug.stdout(" ================ workconf ===============", 1)
self._cfg.debug.stdout(" Finding files in directory %s." % directory, 4)
for d in dirs:
name = directory + "/" + d
if os.path.isdir(name):
self.workconf(name, depth + 1)
if name.endswith(".swp"):
continue
if d == ".svn":
continue
ret.append(name)
self._cfg.debug.stdout(" +++ Found file %s in directory %s" % (name, directory), 4)
self._cfg.debug.stdout(" ================ workconf ===============", 1)
return ret
def workdir(self, directory):
"""walks through all host classes, checking if the classes directory exists in directory
then collect all filenames within this directory and return a dict of all files for this
@@ -21,17 +128,17 @@ class Userconfig():
return {}, None
# get config file for directory
dir_config = get_config(directory + "/" + cfg.get("configfile"))
dir_config = get_config(directory + "/" + self._cfg.get("configfile"), self._cfg)
if not dir_config:
self._cfg.debug.stdout(f' --- Cannot read config file {self._cfg.get("configfile")} in {directory}, skipping.', 1)
self._cfg.debug.stdout(f' --- Cannot read config file {self._cfg.get("configfile")} in {directory}, '
f'skipping.', 1)
return {}, None
destdir = dir_config.get(section="Main",option="dest")
destdir = dir_config.get(section="Main", option="dest")
# destfiles is a dict of all files that will be created from the classes config
# key is the destination filename, values are all classes filenames that are used to
# build the file
destfiles = {}
reverse_sort = False
try:
reverse_sort = dir_config.get(section="Main", option="reverse", boolean=True)
except ValueError:
@@ -41,27 +148,28 @@ class Userconfig():
subprocess.call([directory + "/install.sh"])
# walk through all know classes in directory and find filenames
for h in classes_for_host(reverse_sort): #### continue here
for h in classes_for_host(reverse_sort):
# build classes directory
if h[0] != "":
classdir = directory+"/"+h[0]+"_"+h[1]
else:
classdir = directory+"/"+h[1]
debug.stdout(" ??? Looking for directory %s." % classdir, 4)
self._cfg.debug.stdout(" ??? Looking for directory %s." % classdir, 4)
# if class directory exists
if os.path.isdir(classdir):
debug.stdout(" +++ Found directory %s, getting files." % classdir, 4)
self._cfg.debug.stdout(" +++ Found directory %s, getting files." % classdir, 4)
# get list of files within this class directory
tempfiles = workconf(classdir)
debug.stdout(" +++ Got %d files: %s." % (len(tempfiles), str(tempfiles)), 4)
tempfiles = self.workconf(classdir)
self._cfg.debug.stdout(" +++ Got %d files: %s." % (len(tempfiles), str(tempfiles)), 4)
# put files into dict
for f in tempfiles:
destname = destdir+os.path.basename(f) # destination filename
if not destname in destfiles:
if destname not in destfiles:
destfiles[destname] = []
destfiles[destname].append(f) # append each file to dict
debug.stdout(" +++ Added file to %s, now %d files: %s" % (destname, len(destfiles[destname]), destfiles[destname]), 4)
destfiles[destname].append(f) # append each file to dict
self._cfg.debug.stdout(f" +++ Added file to {destname}, now {len(destfiles[destname])} files: "
f"{destfiles[destname]}", 4)
debug.stdout(" === workdir: %s, Files: %s" % (directory, str(destfiles)), 3)
debug.stdout(" ================ workdir ===============", 1)
self._cfg.debug.stdout(" === workdir: %s, Files: %s" % (directory, str(destfiles)), 3)
self._cfg.debug.stdout(" ================ workdir ===============", 1)
return destfiles, dir_config

47
userconfig/tools.py
View File

@@ -6,7 +6,7 @@ import time
import shutil
class Debug():
class Debug:
_verbose = 0
def __init__(self, verbose=0):
@@ -18,6 +18,9 @@ class Debug():
def add_verbose(self):
self._verbose += 1
def get_verbose(self):
return self._verbose
def stdout(self, out, level=0):
if self._verbose >= level:
print(out)
@@ -29,10 +32,9 @@ class Debug():
def get_config(filename, cfg):
"""reads filename as config, checks for DEST parameter and returns cfgfile object"""
ret = None
try:
ret = Conf(filename)
except:
except ValueError:
cfg.debug.stderr("Error reading config file %s" % filename)
return False
# check for DEST parameter
@@ -50,21 +52,22 @@ def read_skip_comment(fp, commentstring):
"""
for line in fp:
line = line[:-1]
if (commentstring != "" and not re.match("^"+re.escape(commentstring), line)) and line !="" and not re.match("^\s+$", line):
if ((commentstring != "" and not re.match("^"+re.escape(commentstring), line)) and line != "" and
not re.match(r"^\s+$", line)):
yield line
def diff(destfile, tempfile, commentstring, debug):
def diff(destfile, tempfile, commentstring, cfg):
"""diff destfile and tempfile, returns True if files differ, False if they are the same"""
debug.stdout("Diffing %s and %s" % (destfile, tempfile), 3)
cfg.debug.stdout("Diffing %s and %s" % (destfile, tempfile), 3)
if not os.path.isfile(destfile):
debug.stdout("Destfile %s does not exist, returning True." % destfile, 3)
cfg.debug.stdout("Destfile %s does not exist, returning True." % destfile, 3)
# destfile does not exist -> copy tempfile over
return True
# if not destfile
if not os.path.isfile(tempfile):
# tempfile does not exist, this should never happen
error("Temporary file %s does not exist, this should not happen." % tempfile)
cfg.debug.stderr("Temporary file %s does not exist, this should not happen." % tempfile)
sys.exit(1)
# if not tempfile
@@ -75,13 +78,13 @@ def diff(destfile, tempfile, commentstring, debug):
if line1 != line2:
fp1.close()
fp2.close()
debug.stdout("%s differs, return true" % destfile, 3)
cfg.debug.stdout("%s differs, return true" % destfile, 3)
return True
# if differ
# for line
fp1.close()
fp2.close()
debug.stdout("%s is the same, return false" % destfile, 3)
cfg.debug.stdout("%s is the same, return false" % destfile, 3)
return False
@@ -92,47 +95,47 @@ def user_config_generated(filename, cfg):
# filename does not exist, so it was not generated by userconfig
return False
if not cfg.check("Main","stamp"):
if not cfg.check("Main", "stamp"):
# no STAMP in userconfig.cfg, so no way to check if file was generated by userconfig
return False
fp = open(filename, "r")
for line in fp:
if re.search(re.escape(cfg.get("Main","stamp")), line):
if re.search(re.escape(cfg.get("Main", "stamp")), line):
return True
return False
def backup_file(filename, debug):
def backup_file(filename, cfg):
"""make backup of filename, returns True if backup is successful, False else"""
if os.path.isfile(filename):
debug.stdout("%s exists, finding backup name." % filename, 3)
cfg.debug.stdout("%s exists, finding backup name." % filename, 3)
backupname = filename+".userconfig."+time.strftime("%F")
testbackupname = backupname
counter = 0
while os.path.isfile(testbackupname):
counter+=1
testbackupname=backupname+"."+str(counter)
debug.stdout("Renaming %s to %s" % (filename, testbackupname), 1)
counter += 1
testbackupname = backupname+"."+str(counter)
cfg.debug.stdout("Renaming %s to %s" % (filename, testbackupname), 1)
os.rename(filename, testbackupname)
return True
else:
debug.stdout("%s does not exist, do not need backup." % filename, 3)
cfg.debug.stdout("%s does not exist, do not need backup." % filename, 3)
return False
def copy_file(sourcefile, destfile, debug):
def copy_file(sourcefile, destfile, cfg):
"""copy sourcefile to destfile, returns True if successful, False else"""
if os.path.isfile(sourcefile):
# sourcefile exists
debug.stdout("Source file %s exists, proceeding with copy." % sourcefile, 3)
cfg.debug.stdout("Source file %s exists, proceeding with copy." % sourcefile, 3)
if not os.path.isfile(destfile) or os.access(destfile, os.W_OK):
debug.stdout("Copying %s to %s" % (sourcefile, destfile), 1)
cfg.debug.stdout("Copying %s to %s" % (sourcefile, destfile), 1)
shutil.copy(sourcefile, destfile)
return True
# destfile is writable
else:
debug.stdout("Destination file %s does not exist or is not writable." % destfile, 3)
cfg.debug.stdout("Destination file %s does not exist or is not writable." % destfile, 3)
return False