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article_to_xhs.py
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270 lines (219 loc) · 9.1 KB
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import os
import re
import tempfile
import textwrap
import zipfile
from typing import Iterable
from io import BytesIO
from urllib.parse import urlparse
import requests
import streamlit as st
from bs4 import BeautifulSoup
from PIL import Image, ImageDraw, ImageFont
CANVAS_WIDTH = 1080
CANVAS_HEIGHT = 1440
PADDING_X = 96
PADDING_TOP = 180
PADDING_BOTTOM = 120
def _load_font(size: int, bold: bool = False):
regular_candidates = [
"/System/Library/Fonts/PingFang.ttc",
"/System/Library/Fonts/Hiragino Sans GB.ttc",
"/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
]
bold_candidates = [
"/System/Library/Fonts/PingFang.ttc",
"/System/Library/Fonts/Hiragino Sans GB.ttc",
"/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf",
]
candidates = bold_candidates if bold else regular_candidates
for path in candidates:
if os.path.exists(path):
try:
return ImageFont.truetype(path, size=size)
except Exception:
continue
return ImageFont.load_default()
def _wrap_text(line: str, width: int):
if not line:
return [""]
return textwrap.wrap(line, width=width, break_long_words=True, replace_whitespace=False)
def _safe_filename(name: str):
return re.sub(r'[\\/:*?"<>|]+', "_", name).strip("_") or "article"
def fetch_article(url: str, timeout: int = 20):
headers = {
"User-Agent": (
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) "
"AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36"
)
}
resp = requests.get(url, headers=headers, timeout=timeout)
resp.raise_for_status()
resp.encoding = resp.apparent_encoding or resp.encoding
soup = BeautifulSoup(resp.text, "html.parser")
title = ""
og_title = soup.find("meta", property="og:title")
if og_title and og_title.get("content"):
title = og_title["content"].strip()
if not title and soup.title:
title = soup.title.get_text(strip=True)
if not title:
title = "未命名文章"
selectors = ["article p", "main p", ".post p", ".entry-content p", ".article p"]
paragraph_nodes = []
for selector in selectors:
paragraph_nodes = soup.select(selector)
if len(paragraph_nodes) >= 3:
break
if len(paragraph_nodes) < 3:
paragraph_nodes = soup.find_all("p")
paragraphs = []
for node in paragraph_nodes:
text = re.sub(r"\s+", " ", node.get_text(" ", strip=True)).strip()
if len(text) >= 20:
paragraphs.append(text)
# 去重并保持顺序
seen = set()
unique_paragraphs = []
for p in paragraphs[:300]:
if p not in seen:
seen.add(p)
unique_paragraphs.append(p)
if not unique_paragraphs:
desc = soup.find("meta", attrs={"name": "description"})
if desc and desc.get("content"):
unique_paragraphs = [desc["content"].strip()]
return title, unique_paragraphs
def paginate_paragraphs(
paragraphs: Iterable[str], line_width: int = 22, max_lines_per_page: int = 20
):
pages = []
current_lines = []
for paragraph in paragraphs:
lines = _wrap_text(paragraph, width=line_width)
needed = len(lines) + 1 # 加一行间距
if current_lines and len(current_lines) + needed > max_lines_per_page:
pages.append("\n".join(current_lines))
current_lines = []
current_lines.extend(lines)
current_lines.append("")
if current_lines:
pages.append("\n".join(current_lines).strip())
return pages
def _draw_cover(title: str, domain: str, out_path: str):
img = Image.new("RGB", (CANVAS_WIDTH, CANVAS_HEIGHT), color=(250, 244, 235))
draw = ImageDraw.Draw(img)
# 轻量背景层次
draw.ellipse((-220, -180, 620, 660), fill=(255, 220, 175))
draw.ellipse((580, 820, 1320, 1700), fill=(255, 207, 140))
draw.rectangle((0, 0, CANVAS_WIDTH, 130), fill=(227, 76, 60))
title_font = _load_font(72, bold=True)
sub_font = _load_font(36)
label_font = _load_font(34)
card_left = 70
card_top = 260
card_right = CANVAS_WIDTH - 70
card_bottom = CANVAS_HEIGHT - 180
draw.rounded_rectangle(
(card_left, card_top, card_right, card_bottom),
radius=34,
fill=(255, 255, 255),
)
draw.text((100, 70), "小红书图文稿", font=label_font, fill=(255, 255, 255))
wrapped_title = _wrap_text(title, width=14)
y = 360
for line in wrapped_title[:8]:
draw.text((110, y), line, font=title_font, fill=(42, 39, 34))
y += 88
draw.text((110, CANVAS_HEIGHT - 250), f"来源：{domain}", font=sub_font, fill=(105, 99, 92))
draw.text((110, CANVAS_HEIGHT - 200), "保存图片即可发布", font=sub_font, fill=(227, 76, 60))
img.save(out_path)
def _draw_content_page(title: str, content: str, page_no: int, total_pages: int, out_path: str):
img = Image.new("RGB", (CANVAS_WIDTH, CANVAS_HEIGHT), color=(248, 248, 246))
draw = ImageDraw.Draw(img)
title_font = _load_font(42, bold=True)
body_font = _load_font(40)
foot_font = _load_font(30)
draw.rectangle((0, 0, CANVAS_WIDTH, 130), fill=(255, 255, 255))
draw.line((70, 130, CANVAS_WIDTH - 70, 130), fill=(222, 222, 220), width=2)
draw.text((70, 46), "笔记正文", font=title_font, fill=(54, 54, 52))
draw.text((CANVAS_WIDTH - 260, 52), f"{page_no}/{total_pages}", font=foot_font, fill=(130, 130, 128))
title_lines = _wrap_text(title, width=20)[:2]
y = PADDING_TOP
for line in title_lines:
draw.text((PADDING_X, y), line, font=title_font, fill=(30, 30, 28))
y += 56
y += 24
body_lines = content.split("\n")
line_h = 56
for line in body_lines:
draw.text((PADDING_X, y), line, font=body_font, fill=(65, 65, 62))
y += line_h
if y > CANVAS_HEIGHT - PADDING_BOTTOM:
break
draw.text((PADDING_X, CANVAS_HEIGHT - 70), "由 AI 工具箱自动生成", font=foot_font, fill=(150, 150, 148))
img.save(out_path)
def build_xhs_images(title: str, paragraphs: Iterable[str], domain: str, max_pages: int = 8):
temp_dir = tempfile.mkdtemp()
pages = paginate_paragraphs(paragraphs, line_width=22, max_lines_per_page=18)
if not pages:
pages = ["未提取到正文，请更换链接或手动整理内容。"]
pages = pages[:max_pages]
image_paths = []
cover_path = os.path.join(temp_dir, "01_cover.png")
_draw_cover(title=title, domain=domain or "未知来源", out_path=cover_path)
image_paths.append(cover_path)
total = len(pages)
for idx, page_text in enumerate(pages, start=1):
page_path = os.path.join(temp_dir, f"{idx + 1:02d}_content.png")
_draw_content_page(title=title, content=page_text, page_no=idx, total_pages=total, out_path=page_path)
image_paths.append(page_path)
return image_paths, temp_dir
def zip_images(image_paths):
buffer = BytesIO()
with zipfile.ZipFile(buffer, "w", zipfile.ZIP_DEFLATED) as zipf:
for path in image_paths:
zipf.write(path, arcname=os.path.basename(path))
buffer.seek(0)
return buffer
def run_article_to_xhs_app():
st.title("📝 文章链接转小红书图片")
st.markdown("输入文章链接，自动提取正文并生成适合发布的小红书图片。")
article_url = st.text_input("文章链接", placeholder="https://example.com/article")
max_pages = st.slider("最多正文图片页数", min_value=2, max_value=12, value=6, step=1)
if st.button("生成小红书图片", key="article_to_xhs"):
if not article_url.strip():
st.warning("请输入文章链接。")
return
if not article_url.startswith(("http://", "https://")):
st.warning("链接格式不正确，请以 http:// 或 https:// 开头。")
return
try:
with st.spinner("正在抓取文章内容..."):
title, paragraphs = fetch_article(article_url)
if not paragraphs:
st.error("未提取到可用正文，请尝试更换链接。")
return
parsed = urlparse(article_url)
domain = parsed.netloc or "未知来源"
with st.spinner("正在生成图片..."):
image_paths, _ = build_xhs_images(
title=title,
paragraphs=paragraphs,
domain=domain,
max_pages=max_pages,
)
st.success(f"已生成 {len(image_paths)} 张图片。")
st.caption(f"文章标题：{title}")
st.caption(f"来源站点：{domain}")
for i, path in enumerate(image_paths, start=1):
st.image(path, caption=f"第 {i} 张", use_container_width=True)
archive_name = f"{_safe_filename(title)[:30]}_xhs_images.zip"
st.download_button(
"📦 下载全部图片（ZIP）",
data=zip_images(image_paths),
file_name=archive_name,
mime="application/zip",
)
except Exception as e:
st.error(f"生成失败：{e}")