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replpainter.py
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import logging
import itertools
from curtsies import fsarray, fmtstr, FSArray
from curtsies.formatstring import linesplit
from curtsies.fmtfuncs import bold
from .parse import func_for_letter
logger = logging.getLogger(__name__)
# All paint functions should
# * return an array of the width they were asked for
# * return an array not taller than the height they were asked for
def display_linize(msg, columns, blank_line=False):
"""Returns lines obtained by splitting msg over multiple lines.
Warning: if msg is empty, returns an empty list of lines"""
if not msg:
return [""] if blank_line else []
msg = fmtstr(msg)
try:
display_lines = list(msg.width_aware_splitlines(columns))
# use old method if wcwidth can't determine width of msg
except ValueError:
display_lines = [
msg[start:end]
for start, end in zip(
range(0, len(msg), columns),
range(columns, len(msg) + columns, columns),
)
]
return display_lines
def paint_history(rows, columns, display_lines):
lines = []
for r, line in zip(range(rows), display_lines[-rows:]):
lines.append(fmtstr(line[:columns]))
r = fsarray(lines, width=columns)
assert r.shape[0] <= rows, repr(r.shape) + " " + repr(rows)
assert r.shape[1] <= columns, repr(r.shape) + " " + repr(columns)
return r
def paint_current_line(rows, columns, current_display_line):
lines = display_linize(current_display_line, columns, True)
return fsarray(lines, width=columns)
def paginate(rows, matches, current, words_wide):
if current not in matches:
current = matches[0]
per_page = rows * words_wide
current_page = matches.index(current) // per_page
return matches[per_page * current_page : per_page * (current_page + 1)]
def matches_lines(rows, columns, matches, current, config, match_format):
highlight_color = func_for_letter(config.color_scheme["operator"].lower())
if not matches:
return []
color = func_for_letter(config.color_scheme["main"])
max_match_width = max(len(m) for m in matches)
words_wide = max(1, (columns - 1) // (max_match_width + 1))
matches = [match_format(m) for m in matches]
if current:
current = match_format(current)
matches = paginate(rows, matches, current, words_wide)
result = [
fmtstr(" ").join(
color(m.ljust(max_match_width))
if m != current
else highlight_color(m.ljust(max_match_width))
for m in matches[i : i + words_wide]
)
for i in range(0, len(matches), words_wide)
]
logger.debug("match: %r" % current)
logger.debug("matches_lines: %r" % result)
return result
def formatted_argspec(funcprops, arg_pos, columns, config):
# Pretty directly taken from bpython.cli
func = funcprops.func
args = funcprops.argspec.args
kwargs = funcprops.argspec.defaults
_args = funcprops.argspec.varargs
_kwargs = funcprops.argspec.varkwargs
is_bound_method = funcprops.is_bound_method
kwonly = funcprops.argspec.kwonly
kwonly_defaults = funcprops.argspec.kwonly_defaults or dict()
arg_color = func_for_letter(config.color_scheme["name"])
func_color = func_for_letter(config.color_scheme["name"].swapcase())
punctuation_color = func_for_letter(config.color_scheme["punctuation"])
token_color = func_for_letter(config.color_scheme["token"])
bolds = {
token_color: lambda x: bold(token_color(x)),
arg_color: lambda x: bold(arg_color(x)),
}
s = func_color(func) + arg_color(": (")
if is_bound_method and isinstance(arg_pos, int):
# TODO what values could this have?
arg_pos += 1
for i, arg in enumerate(args):
kw = None
if kwargs and i >= len(args) - len(kwargs):
kw = str(kwargs[i - (len(args) - len(kwargs))])
color = token_color if arg_pos in (i, arg) else arg_color
if i == arg_pos or arg == arg_pos:
color = bolds[color]
s += color(arg)
if kw is not None:
s += punctuation_color("=")
s += token_color(kw)
if i != len(args) - 1:
s += punctuation_color(", ")
if _args:
if args:
s += punctuation_color(", ")
s += token_color(f"*{_args}")
if kwonly:
if not _args:
if args:
s += punctuation_color(", ")
s += punctuation_color("*")
marker = object()
for arg in kwonly:
s += punctuation_color(", ")
color = token_color
if arg_pos:
color = bolds[color]
s += color(arg)
default = kwonly_defaults.get(arg, marker)
if default is not marker:
s += punctuation_color("=")
s += token_color(repr(default))
if _kwargs:
if args or _args or kwonly:
s += punctuation_color(", ")
s += token_color(f"**{_kwargs}")
s += punctuation_color(")")
return linesplit(s, columns)
def formatted_docstring(docstring, columns, config):
if isinstance(docstring, bytes):
docstring = docstring.decode("utf8")
elif isinstance(docstring, str):
pass
else:
# TODO: fail properly here and catch possible exceptions in callers.
return []
color = func_for_letter(config.color_scheme["comment"])
return sum(
(
[
color(x)
for x in (display_linize(line, columns) if line else fmtstr(""))
]
for line in docstring.split("\n")
),
[],
)
def paint_infobox(
rows,
columns,
matches,
funcprops,
arg_pos,
match,
docstring,
config,
match_format,
):
"""Returns painted completions, funcprops, match, docstring etc."""
if not (rows and columns):
return FSArray(0, 0)
width = columns - 4
from_argspec = (
formatted_argspec(funcprops, arg_pos, width, config)
if funcprops
else []
)
from_doc = (
formatted_docstring(docstring, width, config) if docstring else []
)
from_matches = (
matches_lines(
max(1, rows - len(from_argspec) - 2),
width,
matches,
match,
config,
match_format,
)
if matches
else []
)
lines = from_argspec + from_matches + from_doc
def add_border(line):
"""Add colored borders left and right to a line."""
new_line = border_color(config.left_border + " ")
new_line += line.ljust(width)[:width]
new_line += border_color(" " + config.right_border)
return new_line
border_color = func_for_letter(config.color_scheme["main"])
top_line = border_color(
config.left_top_corner
+ config.top_border * (width + 2)
+ config.right_top_corner
)
bottom_line = border_color(
config.left_bottom_corner
+ config.bottom_border * (width + 2)
+ config.right_bottom_corner
)
output_lines = list(
itertools.chain((top_line,), map(add_border, lines), (bottom_line,))
)
r = fsarray(
output_lines[: min(rows - 1, len(output_lines) - 1)] + output_lines[-1:]
)
return r
def paint_last_events(rows, columns, names, config):
if not names:
return fsarray([])
width = min(max(len(name) for name in names), columns - 2)
output_lines = []
output_lines.append(
config.left_top_corner
+ config.top_border * width
+ config.right_top_corner
)
for name in reversed(names[max(0, len(names) - (rows - 2)) :]):
output_lines.append(
config.left_border
+ name[:width].center(width)
+ config.right_border
)
output_lines.append(
config.left_bottom_corner
+ config.bottom_border * width
+ config.right_bottom_corner
)
return fsarray(output_lines)
def paint_statusbar(rows, columns, msg, config):
func = func_for_letter(config.color_scheme["main"])
return fsarray([func(msg.ljust(columns))[:columns]])