"""Utilities for dealing with "text"."""
+import logging
import math
import sys
-from typing import List, NamedTuple
+from collections import defaultdict
+from typing import Dict, Generator, List, NamedTuple, Optional
from ansi import fg, reset
-import exec_utils
+
+logger = logging.getLogger(__file__)
class RowsColumns(NamedTuple):
def get_console_rows_columns() -> RowsColumns:
- rows, columns = exec_utils.cmd("stty size").split()
+ """Returns the number of rows/columns on the current console."""
+
+ from exec_utils import cmd
+
+ try:
+ rows, columns = cmd(
+ "stty size",
+ timeout_seconds=1.0,
+ ).split()
+ except Exception as e:
+ logger.exception(e)
+ raise Exception('Can\'t determine console size?!')
return RowsColumns(int(rows), int(columns))
right_end="]",
redraw=True,
) -> None:
+ """Draws a progress graph."""
+
percent = current / total
ret = "\r" if redraw else "\n"
bar = bar_graph(
percent,
- include_text = True,
- width = width,
- fgcolor = fgcolor,
- left_end = left_end,
- right_end = right_end)
- print(
- bar,
- end=ret,
- flush=True,
- file=sys.stderr)
+ include_text=True,
+ width=width,
+ fgcolor=fgcolor,
+ left_end=left_end,
+ right_end=right_end,
+ )
+ print(bar, end=ret, flush=True, file=sys.stderr)
def bar_graph(
include_text=True,
width=70,
fgcolor=fg("school bus yellow"),
+ reset=reset(),
left_end="[",
right_end="]",
-) -> None:
+) -> str:
+ """Returns a string containing a bar graph.
+
+ >>> bar_graph(0.5, fgcolor='', reset='')
+ '[███████████████████████████████████ ] 50.0%'
+
+ """
+
if percentage < 0.0 or percentage > 1.0:
raise ValueError(percentage)
if include_text:
if whole_width == width:
whole_width -= 1
part_char = "▉"
+ elif whole_width == 0 and percentage > 0.0:
+ part_char = "▏"
else:
remainder_width = (percentage * width) % 1
part_width = math.floor(remainder_width * 8)
part_char = [" ", "▏", "▎", "▍", "▌", "▋", "▊", "▉"][part_width]
return (
- left_end +
- fgcolor +
- "█" * whole_width + part_char +
- " " * (width - whole_width - 1) +
- reset() +
- right_end + " " +
- text)
+ left_end
+ + fgcolor
+ + "█" * whole_width
+ + part_char
+ + " " * (width - whole_width - 1)
+ + reset
+ + right_end
+ + " "
+ + text
+ )
def distribute_strings(
alignment: str = "c",
padding: str = " ",
) -> str:
+ """
+ Distributes strings into a line with a particular justification.
+
+ >>> distribute_strings(['this', 'is', 'a', 'test'], width=40)
+ ' this is a test '
+ >>> distribute_strings(['this', 'is', 'a', 'test'], width=40, alignment='l')
+ 'this is a test '
+ >>> distribute_strings(['this', 'is', 'a', 'test'], width=40, alignment='r')
+ ' this is a test'
+
+ """
subwidth = math.floor(width / len(strings))
retval = ""
for string in strings:
string, width=subwidth, alignment=alignment, padding=padding
)
retval += string
+ while len(retval) > width:
+ retval = retval.replace(' ', ' ', 1)
+ while len(retval) < width:
+ retval = retval.replace(' ', ' ', 1)
return retval
-def justify_string_by_chunk(
- string: str, width: int = 80, padding: str = " "
-) -> str:
+def justify_string_by_chunk(string: str, width: int = 80, padding: str = " ") -> str:
+ """
+ Justifies a string.
+
+ >>> justify_string_by_chunk("This is a test", 40)
+ 'This is a test'
+ >>> justify_string_by_chunk("This is a test", 20)
+ 'This is a test'
+
+ """
padding = padding[0]
first, *rest, last = string.split()
w = width - (len(first) + 1 + len(last) + 1)
- retval = (
- first + padding + distribute_strings(rest, width=w, padding=padding)
+ ret = (
+ first
+ + padding
+ + distribute_strings(rest, width=w, padding=padding)
+ + padding
+ + last
)
- while len(retval) + len(last) < width:
- retval += padding
- retval += last
- return retval
+ return ret
def justify_string(
string: str, *, width: int = 80, alignment: str = "c", padding: str = " "
) -> str:
+ """Justify a string.
+
+ >>> justify_string('This is another test', width=40, alignment='c')
+ ' This is another test '
+ >>> justify_string('This is another test', width=40, alignment='l')
+ 'This is another test '
+ >>> justify_string('This is another test', width=40, alignment='r')
+ ' This is another test'
+ >>> justify_string('This is another test', width=40, alignment='j')
+ 'This is another test'
+
+ """
alignment = alignment[0]
padding = padding[0]
while len(string) < width:
elif alignment == "r":
string = padding + string
elif alignment == "j":
- return justify_string_by_chunk(
- string,
- width=width,
- padding=padding
- )
+ return justify_string_by_chunk(string, width=width, padding=padding)
elif alignment == "c":
if len(string) % 2 == 0:
string += padding
def justify_text(text: str, *, width: int = 80, alignment: str = "c") -> str:
- print("-" * width)
+ """
+ Justifies text.
+
+ >>> justify_text('This is a test of the emergency broadcast system. This is only a test.',
+ ... width=40, alignment='j') #doctest: +NORMALIZE_WHITESPACE
+ 'This is a test of the emergency\\nbroadcast system. This is only a test.'
+ """
retval = ""
line = ""
for word in text.split():
if len(line) > 0:
retval += "\n" + line[1:]
return retval[1:]
+
+
+def generate_padded_columns(text: List[str]) -> Generator:
+ max_width: Dict[int, int] = defaultdict(int)
+ for line in text:
+ for pos, word in enumerate(line.split()):
+ max_width[pos] = max(max_width[pos], len(word))
+
+ for line in text:
+ out = ""
+ for pos, word in enumerate(line.split()):
+ width = max_width[pos]
+ word = justify_string(word, width=width, alignment='l')
+ out += f'{word} '
+ yield out
+
+
+def wrap_string(text: str, n: int) -> str:
+ chunks = text.split()
+ out = ''
+ width = 0
+ for chunk in chunks:
+ if width + len(chunk) > n:
+ out += '\n'
+ width = 0
+ out += chunk + ' '
+ width += len(chunk) + 1
+ return out
+
+
+class Indenter(object):
+ """
+ with Indenter(pad_count = 8) as i:
+ i.print('test')
+ with i:
+ i.print('-ing')
+ with i:
+ i.print('1, 2, 3')
+ """
+
+ def __init__(
+ self,
+ *,
+ pad_prefix: Optional[str] = None,
+ pad_char: str = ' ',
+ pad_count: int = 4,
+ ):
+ self.level = -1
+ if pad_prefix is not None:
+ self.pad_prefix = pad_prefix
+ else:
+ self.pad_prefix = ''
+ self.padding = pad_char * pad_count
+
+ def __enter__(self):
+ self.level += 1
+ return self
+
+ def __exit__(self, exc_type, exc_value, exc_tb):
+ self.level -= 1
+ if self.level < -1:
+ self.level = -1
+
+ def print(self, *arg, **kwargs):
+ import string_utils
+
+ text = string_utils.sprintf(*arg, **kwargs)
+ print(self.pad_prefix + self.padding * self.level + text, end='')
+
+
+def header(title: str, *, width: int = 80, color: str = ''):
+ """
+ Returns a nice header line with a title.
+
+ >>> header('title', width=60, color='')
+ '----[ title ]-----------------------------------------------'
+
+ """
+ w = width
+ w -= len(title) + 4
+ if w >= 4:
+ left = 4 * '-'
+ right = (w - 4) * '-'
+ if color != '' and color is not None:
+ r = reset()
+ else:
+ r = ''
+ return f'{left}[ {color}{title}{r} ]{right}'
+ else:
+ return ''
+
+
+if __name__ == '__main__':
+ import doctest
+
+ doctest.testmod()
projects / python_utils.git / blobdiff