python/jc
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full functioning slicer feature

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Kelly Brazil
2023-01-23 16:13:17 -08:00
parent 0c82fe7e4d
commit f5f5f102fb
1 changed files with 30 additions and 5 deletions
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35
jc/cli.py
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@ -42,6 +42,10 @@ except Exception:
JC_CLEAN_EXIT: int = 0 JC_CLEAN_EXIT: int = 0
JC_ERROR_EXIT: int = 100 JC_ERROR_EXIT: int = 100
MAX_EXIT: int = 255 MAX_EXIT: int = 255
SLICER_PATTERN: str = r'-?[0-9]*\:-?[0-9]*$'
SLICER_RE = re.compile(SLICER_PATTERN)
NEWLINES_PATTERN: str = r'(\r\n|\r|\n)'
NEWLINES_RE = re.compile(NEWLINES_PATTERN)
class info(): class info():
@ -71,7 +75,7 @@ class JcCli():
'help_me', 'pretty', 'quiet', 'ignore_exceptions', 'raw', 'meta_out', 'unbuffer', 'help_me', 'pretty', 'quiet', 'ignore_exceptions', 'raw', 'meta_out', 'unbuffer',
'version_info', 'yaml_output', 'bash_comp', 'zsh_comp', 'magic_found_parser', 'version_info', 'yaml_output', 'bash_comp', 'zsh_comp', 'magic_found_parser',
'magic_options', 'magic_run_command', 'magic_run_command_str', 'magic_stdout', 'magic_options', 'magic_run_command', 'magic_run_command_str', 'magic_stdout',
'magic_stderr', 'magic_returncode', 'slice_start', 'slice_end' 'magic_stderr', 'magic_returncode', 'slice_str', 'slice_start', 'slice_end'
) )
def __init__(self) -> None: def __init__(self) -> None:
@ -92,6 +96,7 @@ class JcCli():
self.run_timestamp: Optional[datetime] = None self.run_timestamp: Optional[datetime] = None
# slicer # slicer
self.slice_str: str = ''
self.slice_start: Optional[int] = None self.slice_start: Optional[int] = None
self.slice_end: Optional[int] = None self.slice_end: Optional[int] = None
@ -438,6 +443,17 @@ class JcCli():
self.magic_options = [] self.magic_options = []
return return
# slicer found
if ':' in arg:
if SLICER_RE.match(arg):
self.slice_str = arg
args_given.pop(0)
continue
else:
utils.warning_message(['Invalid slice syntax.'])
args_given.pop(0)
continue
# option found - populate option list # option found - populate option list
if arg.startswith('-'): if arg.startswith('-'):
self.magic_options.extend(args_given.pop(0)[1:]) self.magic_options.extend(args_given.pop(0)[1:])
@ -625,7 +641,7 @@ class JcCli():
@staticmethod @staticmethod
def lazy_splitlines(text: str) -> Iterable[str]: def lazy_splitlines(text: str) -> Iterable[str]:
start = 0 start = 0
for m in re.finditer(r'(\r\n|\r|\n)', text): for m in NEWLINES_RE.finditer(text):
begin, end = m.span() begin, end = m.span()
if begin != start: if begin != start:
yield text[start:begin] yield text[start:begin]
@ -636,9 +652,12 @@ class JcCli():
def slicer(self) -> None: def slicer(self) -> None:
"""Slice input data lazily, if possible. Updates self.data_in""" """Slice input data lazily, if possible. Updates self.data_in"""
if self.slice_str:
self.slice_start = -20001 # 5 slice_start_str, slice_end_str = self.slice_str.split(':', maxsplit=1)
self.slice_end = -20000 # -2 or 8 if slice_start_str:
self.slice_start = int(slice_start_str)
if slice_end_str:
self.slice_end = int(slice_end_str)
if not self.slice_start is None or not self.slice_end is None: if not self.slice_start is None or not self.slice_end is None:
# standard parsers UTF-8 input # standard parsers UTF-8 input
@ -744,6 +763,12 @@ class JcCli():
# find options if magic_parser did not find a command # find options if magic_parser did not find a command
if not self.magic_found_parser: if not self.magic_found_parser:
for opt in self.args: for opt in self.args:
if ':' in opt:
if SLICER_RE.match(opt):
self.slice_str = opt
else:
utils.warning_message(['Invalid slice syntax.'])
if opt in long_options_map: if opt in long_options_map:
self.options.extend(long_options_map[opt][0]) self.options.extend(long_options_map[opt][0])