meta: Fix Deprecated warnings from regexs

Fix handling of escape characters in regexs and hence fix python
Deprecation warnings which will be problematic in python 3.8.

Note that some show up as:

"""
meta/classes/package.bbclass:1293: DeprecationWarning: invalid escape sequence \.  

"""

where the problem isn't on 1293 in package.bbclass but in some _prepend to a
package.bbclass function in a different file like mesa.inc, often from
do_package_split() calls.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

6 files changed, 29 insertions, 29 deletions

diff --git a/meta/lib/oe/license.py b/meta/lib/oe/license.py
index ca385d5187..04f5b316a9 100644
--- a/meta/lib/oe/license.py
+++ b/meta/lib/oe/license.py
@@ -13,8 +13,8 @@ def license_ok(license, dont_want_licenses):
         # will exclude a trailing '+' character from LICENSE in
         # case INCOMPATIBLE_LICENSE is not a 'X+' license.
         lic = license
-        if not re.search('\+$', dwl):
-            lic = re.sub('\+', '', license)
+        if not re.search(r'\+$', dwl):
+            lic = re.sub(r'\+', '', license)
         if fnmatch(lic, dwl):
             return False
     return True
@@ -40,8 +40,8 @@ class InvalidLicense(LicenseError):
         return "invalid characters in license '%s'" % self.license
 
 license_operator_chars = '&|() '
-license_operator = re.compile('([' + license_operator_chars + '])')
-license_pattern = re.compile('[a-zA-Z0-9.+_\-]+$')
+license_operator = re.compile(r'([' + license_operator_chars + '])')
+license_pattern = re.compile(r'[a-zA-Z0-9.+_\-]+$')
 
 class LicenseVisitor(ast.NodeVisitor):
     """Get elements based on OpenEmbedded license strings"""
diff --git a/meta/lib/oe/package.py b/meta/lib/oe/package.py
index efd36b3758..6e83f01f14 100644
--- a/meta/lib/oe/package.py
+++ b/meta/lib/oe/package.py
@@ -255,7 +255,7 @@ def read_shlib_providers(d):
 
     shlib_provider = {}
     shlibs_dirs = d.getVar('SHLIBSDIRS').split()
-    list_re = re.compile('^(.*)\.list$')
+    list_re = re.compile(r'^(.*)\.list$')
     # Go from least to most specific since the last one found wins
     for dir in reversed(shlibs_dirs):
         bb.debug(2, "Reading shlib providers in %s" % (dir))
diff --git a/meta/lib/oe/package_manager.py b/meta/lib/oe/package_manager.py
index 7ff76c61cd..1087144d47 100644
--- a/meta/lib/oe/package_manager.py
+++ b/meta/lib/oe/package_manager.py
@@ -29,7 +29,7 @@ def opkg_query(cmd_output):
     a dictionary with the information of the packages. This is used
     when the packages are in deb or ipk format.
     """
-    verregex = re.compile(' \([=<>]* [^ )]*\)')
+    verregex = re.compile(r' \([=<>]* [^ )]*\)')
     output = dict()
     pkg = ""
     arch = ""
@@ -252,8 +252,8 @@ class DpkgIndexer(Indexer):
             with open(os.path.join(self.d.expand("${STAGING_ETCDIR_NATIVE}"),
                 "apt", "apt.conf.sample")) as apt_conf_sample:
                 for line in apt_conf_sample.read().split("\n"):
-                    line = re.sub("#ROOTFS#", "/dev/null", line)
-                    line = re.sub("#APTCONF#", self.apt_conf_dir, line)
+                    line = re.sub(r"#ROOTFS#", "/dev/null", line)
+                    line = re.sub(r"#APTCONF#", self.apt_conf_dir, line)
                     apt_conf.write(line + "\n")
 
     def write_index(self):
@@ -408,7 +408,7 @@ class PackageManager(object, metaclass=ABCMeta):
         with open(postinst_intercept_hook) as intercept:
             registered_pkgs = None
             for line in intercept.read().split("\n"):
-                m = re.match("^##PKGS:(.*)", line)
+                m = re.match(r"^##PKGS:(.*)", line)
                 if m is not None:
                     registered_pkgs = m.group(1).strip()
                     break
@@ -1217,7 +1217,7 @@ class OpkgPM(OpkgDpkgPM):
                 priority += 5
 
             for line in (self.d.getVar('IPK_FEED_URIS') or "").split():
-                feed_match = re.match("^[ \t]*(.*)##([^ \t]*)[ \t]*$", line)
+                feed_match = re.match(r"^[ \t]*(.*)##([^ \t]*)[ \t]*$", line)
 
                 if feed_match is not None:
                     feed_name = feed_match.group(1)
@@ -1597,7 +1597,7 @@ class DpkgPM(OpkgDpkgPM):
 
         with open(status_file, "r") as status:
             for line in status.read().split('\n'):
-                m = re.match("^Package: (.*)", line)
+                m = re.match(r"^Package: (.*)", line)
                 if m is not None:
                     installed_pkgs.append(m.group(1))
 
@@ -1662,13 +1662,13 @@ class DpkgPM(OpkgDpkgPM):
         # rename *.dpkg-new files/dirs
         for root, dirs, files in os.walk(self.target_rootfs):
             for dir in dirs:
-                new_dir = re.sub("\.dpkg-new", "", dir)
+                new_dir = re.sub(r"\.dpkg-new", "", dir)
                 if dir != new_dir:
                     os.rename(os.path.join(root, dir),
                               os.path.join(root, new_dir))
 
             for file in files:
-                new_file = re.sub("\.dpkg-new", "", file)
+                new_file = re.sub(r"\.dpkg-new", "", file)
                 if file != new_file:
                     os.rename(os.path.join(root, file),
                               os.path.join(root, new_file))
@@ -1733,7 +1733,7 @@ class DpkgPM(OpkgDpkgPM):
                     sources_file.write("deb %s ./\n" % uri)
 
     def _create_configs(self, archs, base_archs):
-        base_archs = re.sub("_", "-", base_archs)
+        base_archs = re.sub(r"_", r"-", base_archs)
 
         if os.path.exists(self.apt_conf_dir):
             bb.utils.remove(self.apt_conf_dir, True)
@@ -1787,7 +1787,7 @@ class DpkgPM(OpkgDpkgPM):
         with open(self.apt_conf_file, "w+") as apt_conf:
             with open(self.d.expand("${STAGING_ETCDIR_NATIVE}/apt/apt.conf.sample")) as apt_conf_sample:
                 for line in apt_conf_sample.read().split("\n"):
-                    match_arch = re.match("  Architecture \".*\";$", line)
+                    match_arch = re.match(r"  Architecture \".*\";$", line)
                     architectures = ""
                     if match_arch:
                         for base_arch in base_arch_list:
@@ -1795,8 +1795,8 @@ class DpkgPM(OpkgDpkgPM):
                         apt_conf.write("  Architectures {%s};\n" % architectures);
                         apt_conf.write("  Architecture \"%s\";\n" % base_archs)
                     else:
-                        line = re.sub("#ROOTFS#", self.target_rootfs, line)
-                        line = re.sub("#APTCONF#", self.apt_conf_dir, line)
+                        line = re.sub(r"#ROOTFS#", self.target_rootfs, line)
+                        line = re.sub(r"#APTCONF#", self.apt_conf_dir, line)
                         apt_conf.write(line + "\n")
 
         target_dpkg_dir = "%s/var/lib/dpkg" % self.target_rootfs
diff --git a/meta/lib/oe/patch.py b/meta/lib/oe/patch.py
index e0f0604251..07a40fc50e 100644
--- a/meta/lib/oe/patch.py
+++ b/meta/lib/oe/patch.py
@@ -334,8 +334,8 @@ class GitApplyTree(PatchTree):
     @staticmethod
     def interpretPatchHeader(headerlines):
         import re
-        author_re = re.compile('[\S ]+ <\S+@\S+\.\S+>')
-        from_commit_re = re.compile('^From [a-z0-9]{40} .*')
+        author_re = re.compile(r'[\S ]+ <\S+@\S+\.\S+>')
+        from_commit_re = re.compile(r'^From [a-z0-9]{40} .*')
         outlines = []
         author = None
         date = None
diff --git a/meta/lib/oe/rootfs.py b/meta/lib/oe/rootfs.py
index 4273891699..551dcfc75f 100644
--- a/meta/lib/oe/rootfs.py
+++ b/meta/lib/oe/rootfs.py
@@ -354,9 +354,9 @@ class Rootfs(object, metaclass=ABCMeta):
 class RpmRootfs(Rootfs):
     def __init__(self, d, manifest_dir, progress_reporter=None, logcatcher=None):
         super(RpmRootfs, self).__init__(d, progress_reporter, logcatcher)
-        self.log_check_regex = '(unpacking of archive failed|Cannot find package'\
-                               '|exit 1|ERROR: |Error: |Error |ERROR '\
-                               '|Failed |Failed: |Failed$|Failed\(\d+\):)'
+        self.log_check_regex = r'(unpacking of archive failed|Cannot find package'\
+                               r'|exit 1|ERROR: |Error: |Error |ERROR '\
+                               r'|Failed |Failed: |Failed$|Failed\(\d+\):)'
         self.manifest = RpmManifest(d, manifest_dir)
 
         self.pm = RpmPM(d,
@@ -499,7 +499,7 @@ class DpkgOpkgRootfs(Rootfs):
             pkg_depends_list = []
             # filter version requirements like libc (>= 1.1)
             for dep in pkg_depends.split(', '):
-                m_dep = re.match("^(.*) \(.*\)$", dep)
+                m_dep = re.match(r"^(.*) \(.*\)$", dep)
                 if m_dep:
                     dep = m_dep.group(1)
                 pkg_depends_list.append(dep)
@@ -515,9 +515,9 @@ class DpkgOpkgRootfs(Rootfs):
             data = status.read()
             status.close()
             for line in data.split('\n'):
-                m_pkg = re.match("^Package: (.*)", line)
-                m_status = re.match("^Status:.*unpacked", line)
-                m_depends = re.match("^Depends: (.*)", line)
+                m_pkg = re.match(r"^Package: (.*)", line)
+                m_status = re.match(r"^Status:.*unpacked", line)
+                m_depends = re.match(r"^Depends: (.*)", line)
 
                 #Only one of m_pkg, m_status or m_depends is not None at time
                 #If m_pkg is not None, we started a new package
@@ -771,7 +771,7 @@ class OpkgRootfs(DpkgOpkgRootfs):
         if allow_replace is None:
             allow_replace = ""
 
-        allow_rep = re.compile(re.sub("\|$", "", allow_replace))
+        allow_rep = re.compile(re.sub(r"\|$", r"", allow_replace))
         error_prompt = "Multilib check error:"
 
         files = {}
diff --git a/meta/lib/oe/utils.py b/meta/lib/oe/utils.py
index ee6f0e6647..7b574ffd30 100644
--- a/meta/lib/oe/utils.py
+++ b/meta/lib/oe/utils.py
@@ -326,7 +326,7 @@ def multiprocess_launch(target, items, d, extraargs=None):
 
 def squashspaces(string):
     import re
-    return re.sub("\s+", " ", string).strip()
+    return re.sub(r"\s+", " ", string).strip()
 
 def format_pkg_list(pkg_dict, ret_format=None):
     output = []
@@ -374,7 +374,7 @@ def host_gcc_version(d, taskcontextonly=False):
     except subprocess.CalledProcessError as e:
         bb.fatal("Error running %s --version: %s" % (compiler, e.output.decode("utf-8")))
 
-    match = re.match(".* (\d\.\d)\.\d.*", output.split('\n')[0])
+    match = re.match(r".* (\d\.\d)\.\d.*", output.split('\n')[0])
     if not match:
         bb.fatal("Can't get compiler version from %s --version output" % compiler)