mirror of
https://github.com/meta-llama/llama-stack.git
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142 lines
4.4 KiB
Python
142 lines
4.4 KiB
Python
# Copyright (c) Meta Platforms, Inc. and affiliates.
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# All rights reserved.
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#
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# This source code is licensed under the terms described in the LICENSE file in
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# the root directory of this source tree.
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import argparse
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import re
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import textwrap
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from llama_models.llama3_1.api.interface import (
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list_jinja_templates,
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render_jinja_template,
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)
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from termcolor import colored, cprint
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from llama_toolchain.cli.subcommand import Subcommand
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def strip_ansi_colors(text):
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ansi_escape = re.compile(r"\x1B(?:[@-Z\\-_]|\[[0-?]*[ -/]*[@-~])")
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return ansi_escape.sub("", text)
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class ModelTemplate(Subcommand):
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"""Llama model cli for describe a model template (message formats)"""
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def __init__(self, subparsers: argparse._SubParsersAction):
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super().__init__()
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self.parser = subparsers.add_parser(
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"template",
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prog="llama model template",
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description="Show llama model message formats",
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epilog=textwrap.dedent(
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"""
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Example:
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llama model template <options>
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"""
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),
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formatter_class=argparse.RawTextHelpFormatter,
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)
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self._add_arguments()
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self.parser.set_defaults(func=self._run_model_template_cmd)
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def _add_arguments(self):
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self.parser.add_argument(
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"-m",
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"--model-family",
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type=str,
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default="llama3_1",
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help="Model Family (llama3_1, llama3_X, etc.)",
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)
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self.parser.add_argument(
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"--template",
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type=str,
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help="Usecase template name (system_message, user_message, assistant_message, tool_message)...",
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required=False,
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)
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def _run_model_template_cmd(self, args: argparse.Namespace) -> None:
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if args.template:
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template, tokens_info = render_jinja_template(args.template)
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rendered = ""
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for tok, is_special in tokens_info:
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if is_special:
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rendered += colored(tok, "yellow", attrs=["bold"])
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else:
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rendered += tok
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rendered += "\n"
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print_table(
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[
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("Name", colored(template.template_name, "white", attrs=["bold"])),
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("Template", rendered),
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("Notes", template.notes),
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],
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separate_rows=True,
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)
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else:
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templates = list_jinja_templates()
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headers = ["Role", "Template Name"]
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print_table(
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[(t.role, t.template_name) for t in templates],
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headers,
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)
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def format_row(row, col_widths):
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def wrap(text, width):
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lines = []
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for line in text.split("\n"):
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if line.strip() == "":
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lines.append("")
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else:
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line = line.strip()
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lines.extend(
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textwrap.wrap(
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line, width, break_long_words=False, replace_whitespace=False
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)
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)
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return lines
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wrapped = [wrap(item, width) for item, width in zip(row, col_widths)]
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max_lines = max(len(subrow) for subrow in wrapped)
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lines = []
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for i in range(max_lines):
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line = []
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for cell_lines, width in zip(wrapped, col_widths):
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value = cell_lines[i] if i < len(cell_lines) else ""
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line.append(value + " " * (width - len(strip_ansi_colors(value))))
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lines.append("| " + (" | ".join(line)) + " |")
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return "\n".join(lines)
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def print_table(rows, headers=None, separate_rows: bool = False):
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if not headers:
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col_widths = [
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max(len(strip_ansi_colors(item)) for item in col) for col in zip(*rows)
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]
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else:
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col_widths = [
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max(len(header), max(len(strip_ansi_colors(item)) for item in col))
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for header, col in zip(headers, zip(*rows))
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]
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col_widths = [min(w, 80) for w in col_widths]
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header_line = "+".join("-" * (width + 2) for width in col_widths)
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header_line = f"+{header_line}+"
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if headers:
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print(header_line)
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cprint(format_row(headers, col_widths), "white", attrs=["bold"])
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print(header_line)
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for row in rows:
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print(format_row(row, col_widths))
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if separate_rows:
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print(header_line)
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if not separate_rows:
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print(header_line)
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