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@sublimator /PackageSetup.py
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#!python
from __future__ import with_statement
import glob
import os.path
import shutil
import zipfile
def isFileEntry(s):
return s[-1] != '/'
def readFile(fname):
with open(fname, 'rb') as f:
return f.read()
def writeFile(fname, data):
with open(fname, 'wb') as fo:
fo.write(data)
def mkdirs(path):
try:
os.makedirs(path)
except os.error:
pass
def upgradeArchive(src, dst, pkgdir, backupdir, inhibitOverwrite):
mkdirs(pkgdir)
mkdirs(os.path.dirname(dst))
newar = zipfile.ZipFile(src)
newfiles = set(filter(isFileEntry, newar.namelist()))
oldar = None
oldfiles = set()
try:
oldar = zipfile.ZipFile(dst)
oldfiles = set(filter(isFileEntry, oldar.namelist()))
except (zipfile.error, IOError):
pass
# delete any orphaned files
if not inhibitOverwrite:
orphanedFiles = oldfiles - newfiles
for f in orphanedFiles:
# backup the file, if the user has modified it
try:
orig = oldar.read(f)
user = readFile(os.path.join(pkgdir, f))
if user != orig:
backupFile = os.path.join(backupdir, f)
mkdirs(os.path.dirname(backupFile))
writeFile(backupFile, user)
except (os.error, IOError):
pass
try:
os.remove(os.path.join(pkgdir, f))
except (os.error, IOError):
pass
# extract any new files
for f in newfiles - oldfiles:
fname = os.path.join(pkgdir, f)
mkdirs(os.path.dirname(fname))
try:
user = readFile(fname)
if user:
if inhibitOverwrite:
continue;
else:
# Backup the old file
backupFile = os.path.join(backupdir, f)
mkdirs(os.path.dirname(backupFile))
writeFile(backupFile, user)
except (os.error, IOError):
pass
writeFile(fname, newar.read(f))
# upgrade each file
if not inhibitOverwrite:
for f in oldfiles & newfiles:
fname = os.path.join(pkgdir, f)
orig = oldar.read(f)
new = newar.read(f)
if new != orig:
# backup the file, if the user has modified it
try:
user = readFile(fname)
if user != orig:
backupFile = os.path.join(backupdir, f)
mkdirs(os.path.dirname(backupFile))
writeFile(backupFile, user)
except (os.error, IOError):
pass
writeFile(fname, newar.read(f))
# copy the zip
shutil.copy(src, dst)
def removeArchive(dst, pkgdir):
oldar = None
oldfiles = set()
try:
oldar = zipfile.ZipFile(dst)
oldfiles = set(filter(isFileEntry, oldar.namelist()))
except (zipfile.error, IOError):
pass
oldar.close()
# delete any orphaned files
orphanedFiles = oldfiles
for f in orphanedFiles:
try:
os.remove(os.path.join(pkgdir, f))
except (os.error, IOError):
pass
# delete the archive and destination
try:
os.remove(dst)
except (os.error, IOError):
pass
try:
os.rmdir(pkgdir)
except (os.error, IOError):
pass
def srcNewer(src, dst):
try:
return (os.path.getmtime(src) > os.path.getmtime(dst)
or os.path.getsize(src) != os.path.getsize(dst))
except (os.error, IOError):
return True
def upgradePackage(pkg, pristinedir, datadir, backupdir):
pristinePkg = os.path.join(pristinedir, os.path.basename(pkg))
# if the zip is different from the one in pristinedir
if srcNewer(pkg, pristinePkg):
(base, ext) = os.path.splitext(os.path.basename(pkg))
inhibitOverwrite = (base == "User")
upgradeArchive(pkg, pristinePkg, os.path.join(datadir, base),
os.path.join(backupdir, base), inhibitOverwrite)
def upgrade(appdir, userdir, pristinedir, datadir, backupdir):
packages = (glob.glob(appdir + "/*.sublime-package") +
glob.glob(userdir + "/*.sublime-package"))
for pkg in packages:
upgradePackage(pkg, pristinedir, datadir, backupdir)
# Delete any packages that are no longer around
depzips = (set([os.path.basename(x) for x in glob.glob(pristinedir + "/*.sublime-package")])
- set([os.path.basename(x) for x in packages]))
for dz in depzips:
pz = os.path.join(pristinedir, dz)
(base, ext) = os.path.splitext(dz)
removeArchive(pz, os.path.join(datadir, base))
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