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import os
import sys
import yaml
import subprocess
from enum import Enum
from pathlib import Path
from functools import lru_cache
from typing import Tuple, List, Callable, Dict
from . import common
class Color(str, Enum):
"""
Terminal color
"""
black = '\x1b[30m'
red = '\x1b[31m' # local diverges from remote
green = '\x1b[32m' # local == remote
yellow = '\x1b[33m' # local is behind
blue = '\x1b[34m'
purple = '\x1b[35m' # local is ahead
cyan = '\x1b[36m'
white = '\x1b[37m' # no remote branch
end = '\x1b[0m'
b_black = '\x1b[30;1m'
b_red = '\x1b[31;1m'
b_green = '\x1b[32;1m'
b_yellow = '\x1b[33;1m'
b_blue = '\x1b[34;1m'
b_purple = '\x1b[35;1m'
b_cyan = '\x1b[36;1m'
b_white = '\x1b[37;1m'
def show_colors(): # pragma: no cover
"""
"""
names = {c.value: c.name for c in Color}
for i, c in enumerate(Color, start=1):
if c != Color.end:
print(f'{c.value}{c.name:<8} ', end='')
if i % 9 == 0:
print()
print(f'{Color.end}')
for situation, c in sorted(get_color_encoding().items()):
print(f'{situation:<12}: {c}{names[c]:<8}{Color.end} ')
@lru_cache()
def get_color_encoding() -> Dict[str, str]:
"""
Return color scheme for different local/remote situations.
"""
# custom settings
yml_config = Path(common.get_config_fname('color.yml'))
if yml_config.is_file():
with open(yml_config, 'r') as stream:
colors = yaml.load(stream, Loader=yaml.FullLoader)
else:
colors = {
'no-remote': Color.white.value,
'in-sync': Color.green.value,
'diverged': Color.red.value,
'local-ahead': Color.purple.value,
'remote-ahead': Color.yellow.value,
}
return colors
def get_info_funcs() -> List[Callable[[str], str]]:
"""
Return the functions to generate `gita ll` information. All these functions
take the repo path as input and return the corresponding information as str.
See `get_path`, `get_repo_status`, `get_common_commit` for examples.
"""
to_display = get_info_items()
# This re-definition is to make unit test mocking to work
all_info_items = {
'branch': get_repo_status,
'commit_msg': get_commit_msg,
'path': get_path,
}
return [all_info_items[k] for k in to_display]
def get_info_items() -> List[str]:
"""
Return the information items to be displayed in the `gita ll` command.
"""
# custom settings
yml_config = Path(common.get_config_fname('info.yml'))
if yml_config.is_file():
with open(yml_config, 'r') as stream:
display_items = yaml.load(stream, Loader=yaml.FullLoader)
display_items = [x for x in display_items if x in ALL_INFO_ITEMS]
else:
# default settings
display_items = ['branch', 'commit_msg']
return display_items
def get_path(path):
return f'{Color.cyan}{path}{Color.end}'
def get_head(path: str) -> str:
result = subprocess.run('git rev-parse --abbrev-ref HEAD'.split(),
stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL,
universal_newlines=True,
cwd=path)
return result.stdout.strip()
def run_quiet_diff(args: List[str]) -> bool:
"""
Return the return code of git diff `args` in quiet mode
"""
result = subprocess.run(
['git', 'diff', '--quiet'] + args,
stderr=subprocess.DEVNULL,
)
return result.returncode
def get_common_commit() -> str:
"""
Return the hash of the common commit of the local and upstream branches.
"""
result = subprocess.run('git merge-base @{0} @{u}'.split(),
stdout=subprocess.PIPE,
universal_newlines=True)
return result.stdout.strip()
def has_untracked() -> bool:
"""
Return True if untracked file/folder exists
"""
result = subprocess.run('git ls-files -zo --exclude-standard'.split(),
stdout=subprocess.PIPE)
return bool(result.stdout)
def get_commit_msg(path: str) -> str:
"""
Return the last commit message.
"""
# `git show-branch --no-name HEAD` is faster than `git show -s --format=%s`
result = subprocess.run('git show-branch --no-name HEAD'.split(),
stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL,
universal_newlines=True,
cwd=path)
return result.stdout.strip()
def get_repo_status(path: str, no_colors=False) -> str:
head = get_head(path)
dirty, staged, untracked, color = _get_repo_status(path, no_colors)
if color:
return f'{color}{head+" "+dirty+staged+untracked:<10}{Color.end}'
return f'{head+" "+dirty+staged+untracked:<10}'
def _get_repo_status(path: str, no_colors: bool) -> Tuple[str]:
"""
Return the status of one repo
"""
os.chdir(path)
dirty = '*' if run_quiet_diff([]) else ''
staged = '+' if run_quiet_diff(['--cached']) else ''
untracked = '_' if has_untracked() else ''
if no_colors:
return dirty, staged, untracked, ''
colors = get_color_encoding()
diff_returncode = run_quiet_diff(['@{u}', '@{0}'])
has_no_remote = diff_returncode == 128
has_no_diff = diff_returncode == 0
if has_no_remote:
color = colors['no-remote']
elif has_no_diff:
color = colors['in-sync']
else:
common_commit = get_common_commit()
outdated = run_quiet_diff(['@{u}', common_commit])
if outdated:
diverged = run_quiet_diff(['@{0}', common_commit])
color = colors['diverged'] if diverged else colors['remote-ahead']
else: # local is ahead of remote
color = colors['local-ahead']
return dirty, staged, untracked, color
ALL_INFO_ITEMS = {
'branch': get_repo_status,
'commit_msg': get_commit_msg,
'path': get_path,
}
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