PDFminer:提取带有字体信息的文本 [英] PDFminer: extract text with its font information

问题描述

我找到了这个问题，但它使用命令行，而我没有想在命令行中使用子进程调用 Python 脚本并解析 HTML 文件以获取字体信息.

I find this question, but it uses command line, and I do not want to call a Python script in command line using subprocess and parse HTML files to get the font information.

我想使用 PDFminer 作为库，我发现 这个问题，但它们只是提取纯文本，没有其他信息，如字体名称、字体大小等.

I want to use PDFminer as a library, and I find this question, but they are just all about extracting plain texts, without other information such as font name, font size, and so on.

推荐答案

#!/usr/bin/env python
from pdfminer.pdfparser import PDFParser
from pdfminer.pdfdocument import PDFDocument
from pdfminer.pdfpage import PDFPage
from pdfminer.pdfinterp import PDFResourceManager
from pdfminer.pdfinterp import PDFPageInterpreter
from pdfminer.layout import LAParams
from pdfminer.converter import PDFPageAggregator
import pdfminer


def createPDFDoc(fpath):
    fp = open(fpath, 'rb')
    parser = PDFParser(fp)
    document = PDFDocument(parser, password='')
    # Check if the document allows text extraction. If not, abort.
    if not document.is_extractable:
        raise "Not extractable"
    else:
        return document


def createDeviceInterpreter():
    rsrcmgr = PDFResourceManager()
    laparams = LAParams()
    device = PDFPageAggregator(rsrcmgr, laparams=laparams)
    interpreter = PDFPageInterpreter(rsrcmgr, device)
    return device, interpreter


def parse_obj(objs):
    for obj in objs:
        if isinstance(obj, pdfminer.layout.LTTextBox):
            for o in obj._objs:
                if isinstance(o,pdfminer.layout.LTTextLine):
                    text=o.get_text()
                    if text.strip():
                        for c in  o._objs:
                            if isinstance(c, pdfminer.layout.LTChar):
                                print "fontname %s"%c.fontname
        # if it's a container, recurse
        elif isinstance(obj, pdfminer.layout.LTFigure):
            parse_obj(obj._objs)
        else:
            pass


document=createPDFDoc("/tmp/simple.pdf")
device,interpreter=createDeviceInterpreter()
pages=PDFPage.create_pages(document)
interpreter.process_page(pages.next())
layout = device.get_result()


parse_obj(layout._objs)

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