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Move to Python 3

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Python 3 was released more than 10 years ago, and support for Python 2
is going away, with many Linux distributions starting to phase it out.

This patch migrates git-arr to Python 3.

The generated output is almost exactly the same, there are some minor
differences such as HTML characters being quoted more aggresively, and
handling of paths with non-utf8 values.
This commit is contained in:
Alberto Bertogli 2020-05-24 02:36:43 +01:00
parent cbb36e087c
commit 1183d6f817
5 changed files with 56 additions and 66 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
.gitignore vendored
View File

@ -1,3 +1,4 @@
*.pyc
__pycache__
.*.swp
.*
!.gitignore

24
git-arr
View File

@ -1,21 +1,15 @@
#!/usr/bin/env python
#!/usr/bin/env python3
"""
git-arr: A git web html generator.
"""
from __future__ import print_function
import configparser
import math
import optparse
import os
import re
import sys
try:
import configparser
except ImportError:
import ConfigParser as configparser
import bottle
import git
@ -64,7 +58,7 @@ def load_config(path):
'generate_patch': 'yes',
}
config = configparser.SafeConfigParser(defaults)
config = configparser.ConfigParser(defaults)
config.read(path)
# Do a first pass for general sanity checking and recursive expansion.
@ -118,7 +112,7 @@ def load_config(path):
r.info.commits_per_page = config.getint(s, 'commits_per_page')
r.info.max_pages = config.getint(s, 'max_pages')
if r.info.max_pages <= 0:
r.info.max_pages = sys.maxint
r.info.max_pages = sys.maxsize
r.info.generate_tree = config.getboolean(s, 'tree')
r.info.root_diff = config.getboolean(s, 'rootdiff')
r.info.generate_patch = config.getboolean(s, 'generate_patch')
@ -263,6 +257,10 @@ def blob(repo, bname, fname, dirname = ''):
fname = git.smstr.from_url(fname)
path = dirname.raw + fname.raw
# Handle backslash-escaped characters, which are not utf8.
# This matches the generated links from git.unquote().
path = path.encode("utf8").decode("unicode-escape").encode("latin1")
content = repo.blob(path, bname)
if content is None:
bottle.abort(404, "File %r not found in branch %s" % (path, bname))
@ -339,7 +337,7 @@ def generate(output, only = None):
else:
# Otherwise, be lazy if we were given a function to run, or write
# always if they gave us a string.
if isinstance(func_or_str, (str, unicode)):
if isinstance(func_or_str, str):
print(path)
s = func_or_str
else:
@ -348,7 +346,7 @@ def generate(output, only = None):
print(path)
s = func_or_str(*args)
open(path, 'w').write(s.encode('utf8', errors = 'xmlcharrefreplace'))
open(path, 'w').write(s)
if mtime:
os.utime(path, (mtime, mtime))
@ -398,7 +396,7 @@ def generate(output, only = None):
write_to('static/syntax.css', read_f, [static_path + '/syntax.css'],
os.stat(static_path + '/syntax.css').st_mtime)
rs = sorted(repos.values(), key = lambda r: r.name)
rs = sorted(list(repos.values()), key = lambda r: r.name)
if only:
rs = [r for r in rs if r.name in only]

85
git.py
View File

@ -12,35 +12,13 @@ import subprocess
from collections import defaultdict
import email.utils
import datetime
import urllib
from cgi import escape
import urllib.request, urllib.parse, urllib.error
from html import escape
# Path to the git binary.
GIT_BIN = "git"
class EncodeWrapper:
"""File-like wrapper that returns data utf8 encoded."""
def __init__(self, fd, encoding = 'utf8', errors = 'replace'):
self.fd = fd
self.encoding = encoding
self.errors = errors
def __iter__(self):
for line in self.fd:
yield line.decode(self.encoding, errors = self.errors)
def read(self):
"""Returns the whole content."""
s = self.fd.read()
return s.decode(self.encoding, errors = self.errors)
def readline(self):
"""Returns a single line."""
s = self.fd.readline()
return s.decode(self.encoding, errors = self.errors)
def run_git(repo_path, params, stdin = None, silent_stderr = False, raw = False):
"""Invokes git with the given parameters.
@ -66,13 +44,8 @@ def run_git(repo_path, params, stdin = None, silent_stderr = False, raw = False)
if raw:
return p.stdout
# We need to wrap stdout if we want to decode it as utf8, subprocess
# doesn't support us telling it the encoding.
if sys.version_info.major == 3:
return io.TextIOWrapper(p.stdout, encoding = 'utf8',
errors = 'replace')
else:
return EncodeWrapper(p.stdout)
errors = 'backslashreplace')
class GitCommand (object):
@ -109,6 +82,8 @@ class GitCommand (object):
def stdin(self, s):
"""Sets the contents we will send in stdin."""
self._override = True
if isinstance(s, str):
s = s.encode("utf8")
self._stdin_buf = s
self._override = False
@ -116,7 +91,7 @@ class GitCommand (object):
"""Runs the git command."""
params = [self._cmd]
for k, v in self._kwargs.items():
for k, v in list(self._kwargs.items()):
dash = '--' if len(k) > 1 else '-'
if v is None:
params.append('%s%s' % (dash, k))
@ -146,11 +121,16 @@ class smstr:
.html -> an HTML-embeddable representation.
"""
def __init__(self, raw):
if not isinstance(raw, str):
raise TypeError("The raw string must be instance of 'str'")
if not isinstance(raw, (str, bytes)):
raise TypeError(
"The raw string must be instance of 'str', not %s" %
type(raw))
self.raw = raw
self.unicode = raw.decode('utf8', errors = 'replace')
self.url = urllib.pathname2url(raw)
if isinstance(raw, bytes):
self.unicode = raw.decode('utf8', errors = 'backslashreplace')
else:
self.unicode = raw
self.url = urllib.request.pathname2url(raw)
self.html = self._to_html()
def __cmp__(self, other):
@ -163,7 +143,7 @@ class smstr:
@staticmethod
def from_url(url):
"""Returns an smstr() instance from an url-encoded string."""
return smstr(urllib.url2pathname(url))
return smstr(urllib.request.url2pathname(url))
def split(self, sep):
"""Like str.split()."""
@ -176,10 +156,10 @@ class smstr:
def _to_html(self):
"""Returns an html representation of the unicode string."""
html = u''
html = ''
for c in escape(self.unicode):
if c in '\t\r\n\r\f\a\b\v\0':
esc_c = c.encode('ascii').encode('string_escape')
esc_c = c.encode("unicode-escape").decode("utf8")
html += '<span class="ctrlchr">%s</span>' % esc_c
else:
html += c
@ -190,14 +170,23 @@ class smstr:
def unquote(s):
"""Git can return quoted file names, unquote them. Always return a str."""
if not (s[0] == '"' and s[-1] == '"'):
# Unquoted strings are always safe, no need to mess with them; just
# make sure we return str.
s = s.encode('ascii')
# Unquoted strings are always safe, no need to mess with them
return s
# Get rid of the quotes, we never want them in the output, and convert to
# a raw string, un-escaping the backslashes.
s = s[1:-1].decode('string-escape')
# The string will be of the form `"<escaped>"`, where <escaped> is a
# backslash-escaped representation of the name of the file.
# Examples: "with\ttwo\ttabs" , "\303\261aca-utf8", "\361aca-latin1"
# Get rid of the quotes, we never want them in the output.
s = s[1:-1]
# Un-escape the backslashes.
# latin1 is ok to use here because in Python it just maps the code points
# 0-255 to the bytes 0x-0xff, which is what we expect.
s = s.encode("latin1").decode("unicode-escape")
# Convert to utf8.
s = s.encode("latin1").decode("utf8", errors='backslashreplace')
return s
@ -337,13 +326,13 @@ class Repo:
cmd.raw(True)
cmd.batch = '%(objectsize)'
if isinstance(ref, unicode):
ref = ref.encode('utf8')
cmd.stdin('%s:%s' % (ref, path))
# Format: <ref>:<path>
# Construct it in binary since the path might not be utf8.
cmd.stdin(ref.encode("utf8") + b":" + path)
out = cmd.run()
head = out.readline()
if not head or head.strip().endswith('missing'):
if not head or head.strip().endswith(b'missing'):
return None
return Blob(out.read()[:int(head)])

6
utils.py
View File

@ -108,15 +108,17 @@ def markdown_blob(s):
def embed_image_blob(fname, image_data):
mimetype = mimetypes.guess_type(fname)[0]
b64img = base64.b64encode(image_data).decode("ascii")
return '<img style="max-width:100%;" src="data:{0};base64,{1}" />'.format( \
mimetype, base64.b64encode(image_data))
mimetype, b64img)
def is_binary(s):
# Git considers a blob binary if NUL in first ~8KB, so do the same.
return '\0' in s[:8192]
return b'\0' in s[:8192]
def hexdump(s):
graph = string.ascii_letters + string.digits + string.punctuation + ' '
s = s.decode("latin1")
offset = 0
while s:
t = s[:16]

2
views/tree-list.html
View File

@ -1,5 +1,5 @@
<table class="nice toggable ls" id="ls">
% key_func = lambda (t, n, s): (t != 'tree', n.raw)
% key_func = lambda x: (x[0] != 'tree', x[1].raw)
% for type, name, size in sorted(tree.ls(dirname.raw), key = key_func):
<tr class="{{type}}">
% if type == "blob":