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# Copyright (c) Kyutai, all rights reserved.
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
"""Utilities for the command line client, in particular for handling interactions with the terminal.
"""
from dataclasses import dataclass
import sys
def colorize(text, color):
code = f"\033[{color}m"
restore = "\033[0m"
return "".join([code, text, restore])
def make_log(level: str, msg: str) -> str:
if level == "warning":
prefix = colorize("[Warn]", "1;31")
elif level == "info":
prefix = colorize("[Info]", "1;34")
elif level == "error":
prefix = colorize("[Err ]", "1;31")
else:
raise ValueError(f"Unknown level {level}")
return prefix + " " + msg
class RawPrinter:
def __init__(self, stream=sys.stdout, err_stream=sys.stderr):
self.stream = stream
self.err_stream = err_stream
def print_header(self):
pass
def print_token(self, token: str):
self.stream.write(token)
self.stream.flush()
def log(self, level: str, msg: str):
print(f"{level.capitalize()}: {msg}", file=self.err_stream)
def print_lag(self):
self.err_stream.write(colorize(" [LAG]", "31"))
self.err_stream.flush()
def print_pending(self):
pass
@dataclass
class LineEntry:
msg: str
color: str | None = None
def render(self):
if self.color is None:
return self.msg
else:
return colorize(self.msg, self.color)
def __len__(self):
return len(self.msg)
class Line:
def __init__(self, stream):
self.stream = stream
self._line: list[LineEntry] = []
self._has_padding: bool = False
self._max_line_length = 0
def __bool__(self):
return bool(self._line)
def __len__(self):
return sum(len(entry) for entry in self._line)
def add(self, msg: str, color: str | None = None) -> int:
entry = LineEntry(msg, color)
return self._add(entry)
def _add(self, entry: LineEntry) -> int:
if self._has_padding:
self.erase(count=0)
self._line.append(entry)
self.stream.write(entry.render())
self._max_line_length = max(self._max_line_length, len(self))
return len(entry)
def erase(self, count: int = 1):
if count:
entries = list(self._line[:-count])
else:
entries = list(self._line)
self._line.clear()
self.stream.write("\r")
for entry in entries:
self._line.append(entry)
self.stream.write(entry.render())
self._has_padding = False
def newline(self):
missing = self._max_line_length - len(self)
if missing > 0:
self.stream.write(" " * missing)
self.stream.write("\n")
self._line.clear()
self._max_line_length = 0
self._has_padding = False
def flush(self):
missing = self._max_line_length - len(self)
if missing > 0:
self.stream.write(" " * missing)
self._has_padding = True
self.stream.flush()
class Printer:
def __init__(self, max_cols: int = 80, stream=sys.stdout, err_stream=sys.stderr):
self.max_cols = max_cols
self.line = Line(stream)
self.stream = stream
self.err_stream = err_stream
self._pending_count = 0
self._pending_printed = False
def print_header(self):
self.line.add(" " + "-" * (self.max_cols) + " ")
self.line.newline()
self.line.flush()
self.line.add("| ")
def _remove_pending(self) -> bool:
if self._pending_printed:
self._pending_printed = False
self.line.erase(1)
return True
return False
def print_token(self, token: str, color: str | None = None):
self._remove_pending()
remaining = self.max_cols - len(self.line)
if len(token) <= remaining:
self.line.add(token, color)
else:
end = " " * remaining + " |"
if token.startswith(" "):
token = token.lstrip()
self.line.add(end)
self.line.newline()
self.line.add("| ")
self.line.add(token, color)
else:
assert color is None
erase_count = None
cumulated = ""
for idx, entry in enumerate(self.line._line[::-1]):
if entry.color:
# probably a LAG message
erase_count = idx
break
if entry.msg.startswith(" "):
erase_count = idx + 1
cumulated = entry.msg + cumulated
break
if erase_count is not None:
if erase_count > 0:
self.line.erase(erase_count)
remaining = self.max_cols - len(self.line)
end = " " * remaining + " |"
self.line.add(end)
self.line.newline()
self.line.add("| ")
token = cumulated.lstrip() + token
self.line.add(token)
else:
self.line.add(token[:remaining])
self.line.add(" |")
self.line.newline()
self.line.add("| ")
self.line.add(token[remaining:])
self.line.flush()
def log(self, level: str, msg: str):
msg = make_log(level, msg)
self._remove_pending()
if self.line:
self.line.newline()
self.line.flush()
print(msg, file=self.err_stream)
self.err_stream.flush()
def print_lag(self):
self.print_token(" [LAG]", "31")
def print_pending(self):
chars = ["|", "/", "-", "\\"]
count = int(self._pending_count / 5)
char = chars[count % len(chars)]
colors = ["32", "33", "31"]
self._remove_pending()
self.line.add(char, colors[count % len(colors)])
self._pending_printed = True
self._pending_count += 1
AnyPrinter = Printer | RawPrinter
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