288 lines
11 KiB
Python
288 lines
11 KiB
Python
import markdown
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import re
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import os
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import math
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from textwrap import dedent
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from functools import lru_cache
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from pymdownx.superfences import fence_div_format, fence_code_format
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from latex2mathml.converter import convert as tex2mathml
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from shared_utils.config_loader import get_conf as get_conf
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pj = os.path.join
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default_user_name = 'default_user'
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markdown_extension_configs = {
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'mdx_math': {
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'enable_dollar_delimiter': True,
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'use_gitlab_delimiters': False,
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},
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}
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code_highlight_configs = {
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"pymdownx.superfences": {
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'css_class': 'codehilite',
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"custom_fences": [
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{
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'name': 'mermaid',
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'class': 'mermaid',
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'format': fence_code_format
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}
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]
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},
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"pymdownx.highlight": {
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'css_class': 'codehilite',
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'guess_lang': True,
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# 'auto_title': True,
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# 'linenums': True
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}
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}
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def text_divide_paragraph(text):
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"""
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将文本按照段落分隔符分割开，生成带有段落标签的HTML代码。
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"""
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pre = '<div class="markdown-body">'
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suf = '</div>'
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if text.startswith(pre) and text.endswith(suf):
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return text
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if '```' in text:
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# careful input
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return text
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elif '</div>' in text:
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# careful input
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return text
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else:
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# whatever input
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lines = text.split("\n")
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for i, line in enumerate(lines):
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lines[i] = lines[i].replace(" ", " ")
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text = "</br>".join(lines)
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return pre + text + suf
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def tex2mathml_catch_exception(content, *args, **kwargs):
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try:
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content = tex2mathml(content, *args, **kwargs)
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except:
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content = content
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return content
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def replace_math_no_render(match):
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content = match.group(1)
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if 'mode=display' in match.group(0):
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content = content.replace('\n', '</br>')
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return f"<font color=\"#00FF00\">$$</font><font color=\"#FF00FF\">{content}</font><font color=\"#00FF00\">$$</font>"
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else:
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return f"<font color=\"#00FF00\">$</font><font color=\"#FF00FF\">{content}</font><font color=\"#00FF00\">$</font>"
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def replace_math_render(match):
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content = match.group(1)
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if 'mode=display' in match.group(0):
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if '\\begin{aligned}' in content:
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content = content.replace('\\begin{aligned}', '\\begin{array}')
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content = content.replace('\\end{aligned}', '\\end{array}')
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content = content.replace('&', ' ')
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content = tex2mathml_catch_exception(content, display="block")
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return content
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else:
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return tex2mathml_catch_exception(content)
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def markdown_bug_hunt(content):
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"""
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解决一个mdx_math的bug（单$包裹begin命令时多余<script>）
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"""
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content = content.replace('<script type="math/tex">\n<script type="math/tex; mode=display">',
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'<script type="math/tex; mode=display">')
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content = content.replace('</script>\n</script>', '</script>')
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return content
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def is_equation(txt):
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"""
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判定是否为公式 | 测试1 写出洛伦兹定律，使用tex格式公式 测试2 给出柯西不等式，使用latex格式 测试3 写出麦克斯韦方程组
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"""
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if '```' in txt and '```reference' not in txt: return False
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if '$' not in txt and '\\[' not in txt: return False
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mathpatterns = {
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r'(?<!\\|\$)(\$)([^\$]+)(\$)': {'allow_multi_lines': False}, # $...$
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r'(?<!\\)(\$\$)([^\$]+)(\$\$)': {'allow_multi_lines': True}, # $$...$$
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r'(?<!\\)(\\\[)(.+?)(\\\])': {'allow_multi_lines': False}, # \[...\]
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# r'(?<!\\)(\\\()(.+?)(\\\))': {'allow_multi_lines': False}, # \(...\)
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# r'(?<!\\)(\\begin{([a-z]+?\*?)})(.+?)(\\end{\2})': {'allow_multi_lines': True}, # \begin...\end
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# r'(?<!\\)(\$`)([^`]+)(`\$)': {'allow_multi_lines': False}, # $`...`$
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}
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matches = []
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for pattern, property in mathpatterns.items():
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flags = re.ASCII | re.DOTALL if property['allow_multi_lines'] else re.ASCII
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matches.extend(re.findall(pattern, txt, flags))
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if len(matches) == 0: return False
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contain_any_eq = False
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illegal_pattern = re.compile(r'[^\x00-\x7F]|echo')
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for match in matches:
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if len(match) != 3: return False
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eq_canidate = match[1]
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if illegal_pattern.search(eq_canidate):
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return False
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else:
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contain_any_eq = True
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return contain_any_eq
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def fix_markdown_indent(txt):
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# fix markdown indent
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if (' - ' not in txt) or ('. ' not in txt):
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# do not need to fix, fast escape
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return txt
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# walk through the lines and fix non-standard indentation
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lines = txt.split("\n")
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pattern = re.compile(r'^\s+-')
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activated = False
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for i, line in enumerate(lines):
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if line.startswith('- ') or line.startswith('1. '):
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activated = True
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if activated and pattern.match(line):
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stripped_string = line.lstrip()
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num_spaces = len(line) - len(stripped_string)
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if (num_spaces % 4) == 3:
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num_spaces_should_be = math.ceil(num_spaces / 4) * 4
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lines[i] = ' ' * num_spaces_should_be + stripped_string
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return '\n'.join(lines)
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FENCED_BLOCK_RE = re.compile(
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dedent(r'''
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(?P<fence>^[ \t]*(?:~{3,}|`{3,}))[ ]* # opening fence
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((\{(?P<attrs>[^\}\n]*)\})| # (optional {attrs} or
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(\.?(?P<lang>[\w#.+-]*)[ ]*)? # optional (.)lang
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(hl_lines=(?P<quot>"|')(?P<hl_lines>.*?)(?P=quot)[ ]*)?) # optional hl_lines)
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\n # newline (end of opening fence)
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(?P<code>.*?)(?<=\n) # the code block
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(?P=fence)[ ]*$ # closing fence
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'''),
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re.MULTILINE | re.DOTALL | re.VERBOSE
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)
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def get_line_range(re_match_obj, txt):
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start_pos, end_pos = re_match_obj.regs[0]
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num_newlines_before = txt[:start_pos+1].count('\n')
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line_start = num_newlines_before
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line_end = num_newlines_before + txt[start_pos:end_pos].count('\n')+1
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return line_start, line_end
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def fix_code_segment_indent(txt):
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lines = []
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change_any = False
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txt_tmp = txt
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while True:
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re_match_obj = FENCED_BLOCK_RE.search(txt_tmp)
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if not re_match_obj: break
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if len(lines) == 0: lines = txt.split("\n")
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# 清空 txt_tmp 对应的位置方便下次搜索
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start_pos, end_pos = re_match_obj.regs[0]
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txt_tmp = txt_tmp[:start_pos] + ' '*(end_pos-start_pos) + txt_tmp[end_pos:]
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line_start, line_end = get_line_range(re_match_obj, txt)
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# 获取公共缩进
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shared_indent_cnt = 1e5
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for i in range(line_start, line_end):
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stripped_string = lines[i].lstrip()
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num_spaces = len(lines[i]) - len(stripped_string)
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if num_spaces < shared_indent_cnt:
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shared_indent_cnt = num_spaces
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# 修复缩进
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if (shared_indent_cnt < 1e5) and (shared_indent_cnt % 4) == 3:
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num_spaces_should_be = math.ceil(shared_indent_cnt / 4) * 4
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for i in range(line_start, line_end):
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add_n = num_spaces_should_be - shared_indent_cnt
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lines[i] = ' ' * add_n + lines[i]
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if not change_any: # 遇到第一个
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change_any = True
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if change_any:
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return '\n'.join(lines)
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else:
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return txt
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@lru_cache(maxsize=128) # 使用 lru缓存 加快转换速度
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def markdown_convertion(txt):
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"""
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将Markdown格式的文本转换为HTML格式。如果包含数学公式，则先将公式转换为HTML格式。
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"""
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pre = '<div class="markdown-body">'
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suf = '</div>'
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if txt.startswith(pre) and txt.endswith(suf):
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# print('警告，输入了已经经过转化的字符串，二次转化可能出问题')
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return txt # 已经被转化过，不需要再次转化
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find_equation_pattern = r'<script type="math/tex(?:.*?)>(.*?)</script>'
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txt = fix_markdown_indent(txt)
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# txt = fix_code_segment_indent(txt)
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if is_equation(txt): # 有$标识的公式符号，且没有代码段```的标识
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# convert everything to html format
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split = markdown.markdown(text='---')
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convert_stage_1 = markdown.markdown(text=txt, extensions=['sane_lists', 'tables', 'mdx_math', 'pymdownx.superfences', 'pymdownx.highlight'],
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extension_configs={**markdown_extension_configs, **code_highlight_configs})
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convert_stage_1 = markdown_bug_hunt(convert_stage_1)
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# 1. convert to easy-to-copy tex (do not render math)
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convert_stage_2_1, n = re.subn(find_equation_pattern, replace_math_no_render, convert_stage_1, flags=re.DOTALL)
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# 2. convert to rendered equation
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convert_stage_2_2, n = re.subn(find_equation_pattern, replace_math_render, convert_stage_1, flags=re.DOTALL)
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# cat them together
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return pre + convert_stage_2_1 + f'{split}' + convert_stage_2_2 + suf
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else:
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return pre + markdown.markdown(txt, extensions=['sane_lists', 'tables', 'pymdownx.superfences', 'pymdownx.highlight'], extension_configs=code_highlight_configs) + suf
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def close_up_code_segment_during_stream(gpt_reply):
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"""
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在gpt输出代码的中途（输出了前面的```，但还没输出完后面的```），补上后面的```
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Args:
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gpt_reply (str): GPT模型返回的回复字符串。
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Returns:
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str: 返回一个新的字符串，将输出代码片段的“后面的```”补上。
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"""
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if '```' not in gpt_reply:
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return gpt_reply
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if gpt_reply.endswith('```'):
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return gpt_reply
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# 排除了以上两个情况，我们
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segments = gpt_reply.split('```')
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n_mark = len(segments) - 1
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if n_mark % 2 == 1:
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return gpt_reply + '\n```' # 输出代码片段中！
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else:
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return gpt_reply
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def format_io(self, y):
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"""
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将输入和输出解析为HTML格式。将y中最后一项的输入部分段落化，并将输出部分的Markdown和数学公式转换为HTML格式。
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"""
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if y is None or y == []:
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return []
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i_ask, gpt_reply = y[-1]
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# 输入部分太自由，预处理一波
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if i_ask is not None: i_ask = text_divide_paragraph(i_ask)
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# 当代码输出半截的时候，试着补上后个```
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if gpt_reply is not None: gpt_reply = close_up_code_segment_during_stream(gpt_reply)
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# process
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y[-1] = (
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None if i_ask is None else markdown.markdown(i_ask, extensions=['pymdownx.superfences', 'tables', 'pymdownx.highlight'], extension_configs=code_highlight_configs),
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None if gpt_reply is None else markdown_convertion(gpt_reply)
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)
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return y
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