File: _textwrap.py

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import textwrap
from contextlib import contextmanager


class TextWrapper(textwrap.TextWrapper):

    def _handle_long_word(self, reversed_chunks, cur_line, cur_len, width):
        space_left = max(width - cur_len, 1)

        if self.break_long_words:
            last = reversed_chunks[-1]
            cut = last[:space_left]
            res = last[space_left:]
            cur_line.append(cut)
            reversed_chunks[-1] = res
        elif not cur_line:
            cur_line.append(reversed_chunks.pop())

    @contextmanager
    def extra_indent(self, indent):
        old_initial_indent = self.initial_indent
        old_subsequent_indent = self.subsequent_indent
        self.initial_indent += indent
        self.subsequent_indent += indent
        try:
            yield
        finally:
            self.initial_indent = old_initial_indent
            self.subsequent_indent = old_subsequent_indent

    def indent_only(self, text):
        rv = []
        for idx, line in enumerate(text.splitlines()):
            indent = self.initial_indent
            if idx > 0:
                indent = self.subsequent_indent
            rv.append(indent + line)
        return '\n'.join(rv)