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| """Terminal input and output prompts.""" | |
| from pygments.token import Token | |
| import sys | |
| from IPython.core.displayhook import DisplayHook | |
| from prompt_toolkit.formatted_text import fragment_list_width, PygmentsTokens | |
| from prompt_toolkit.shortcuts import print_formatted_text | |
| from prompt_toolkit.enums import EditingMode | |
| class Prompts(object): | |
| def __init__(self, shell): | |
| self.shell = shell | |
| def vi_mode(self): | |
| if (getattr(self.shell.pt_app, 'editing_mode', None) == EditingMode.VI | |
| and self.shell.prompt_includes_vi_mode): | |
| mode = str(self.shell.pt_app.app.vi_state.input_mode) | |
| if mode.startswith('InputMode.'): | |
| mode = mode[10:13].lower() | |
| elif mode.startswith('vi-'): | |
| mode = mode[3:6] | |
| return '['+mode+'] ' | |
| return '' | |
| def in_prompt_tokens(self): | |
| return [ | |
| (Token.Prompt, self.vi_mode() ), | |
| (Token.Prompt, 'In ['), | |
| (Token.PromptNum, str(self.shell.execution_count)), | |
| (Token.Prompt, ']: '), | |
| ] | |
| def _width(self): | |
| return fragment_list_width(self.in_prompt_tokens()) | |
| def continuation_prompt_tokens(self, width=None): | |
| if width is None: | |
| width = self._width() | |
| return [ | |
| (Token.Prompt, (' ' * (width - 5)) + '...: '), | |
| ] | |
| def rewrite_prompt_tokens(self): | |
| width = self._width() | |
| return [ | |
| (Token.Prompt, ('-' * (width - 2)) + '> '), | |
| ] | |
| def out_prompt_tokens(self): | |
| return [ | |
| (Token.OutPrompt, 'Out['), | |
| (Token.OutPromptNum, str(self.shell.execution_count)), | |
| (Token.OutPrompt, ']: '), | |
| ] | |
| class ClassicPrompts(Prompts): | |
| def in_prompt_tokens(self): | |
| return [ | |
| (Token.Prompt, '>>> '), | |
| ] | |
| def continuation_prompt_tokens(self, width=None): | |
| return [ | |
| (Token.Prompt, '... ') | |
| ] | |
| def rewrite_prompt_tokens(self): | |
| return [] | |
| def out_prompt_tokens(self): | |
| return [] | |
| class RichPromptDisplayHook(DisplayHook): | |
| """Subclass of base display hook using coloured prompt""" | |
| def write_output_prompt(self): | |
| sys.stdout.write(self.shell.separate_out) | |
| # If we're not displaying a prompt, it effectively ends with a newline, | |
| # because the output will be left-aligned. | |
| self.prompt_end_newline = True | |
| if self.do_full_cache: | |
| tokens = self.shell.prompts.out_prompt_tokens() | |
| prompt_txt = ''.join(s for t, s in tokens) | |
| if prompt_txt and not prompt_txt.endswith('\n'): | |
| # Ask for a newline before multiline output | |
| self.prompt_end_newline = False | |
| if self.shell.pt_app: | |
| print_formatted_text(PygmentsTokens(tokens), | |
| style=self.shell.pt_app.app.style, end='', | |
| ) | |
| else: | |
| sys.stdout.write(prompt_txt) | |
| def write_format_data(self, format_dict, md_dict=None) -> None: | |
| if self.shell.mime_renderers: | |
| for mime, handler in self.shell.mime_renderers.items(): | |
| if mime in format_dict: | |
| handler(format_dict[mime], None) | |
| return | |
| super().write_format_data(format_dict, md_dict) | |