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Tkinter Simple Markdown Parser-删除标记

tkinter python-3.x python

scotty3785 · 技术社区 · 6 年前

我在Tkinter做一个简单的降价分析。例如,标题可以被星号符号包围的概念 *Heading 1* , **Heading 2** .

我使用regex来查找这种格式的字符串,标记它们并更改标记的样式。

我正在努力处理的项目是在搜索后从文本中删除星号符号。我尝试了一些代码(包括注释掉的代码),但它只是删除了标记的文本。

我的代码正确找到 *标题1 把它变成 *标题1 但不能删除标记符号 标题1

有人能帮我用算法从保留格式的标题中删除星号符号吗?

import tkinter as tk
from tkinter.scrolledtext import ScrolledText
from tkinter import font


class HelpDialog(tk.Toplevel):
    """Seperate window to show the results of SSO Search"""
    def __init__(self, parent,text):
        super().__init__(parent)

        self.title("Help")
        self.defaultfont = font.Font(family="Sans Serif",size=12)
        self.textbox = ScrolledText(self,height=40,width=80,font=self.defaultfont)
        self.textbox.config(wrap=tk.WORD)
        self.textbox.grid()


        self.textbox.insert(0.0,text)
        self.style()

    def style(self):
        self.h1font = font.Font(family="Sans Serif", size=18, weight="bold")
        self.h2font = font.Font(family="Sans Serif", size=14, weight="bold")
        self.h3font = font.Font(family="Sans Serif", size=12, weight="bold", slant="italic")
        self.textbox.tag_configure("h1",font=self.h1font)
        self.textbox.tag_configure("h2",font=self.h2font)
        self.textbox.tag_configure("h3",font=self.h3font)

        self.tag_match(r"^[\*]{1}[\w\d -]+[\*]{1}$", "h1")
        self.tag_match(r"^[\*]{2}[\w\d -]+[\*]{2}$", "h2")
        self.tag_match(r"^[\*]{3}[\w\d -]+[\*]{3}$", "h3")

    def tag_match(self,regex,tag):
        count = tk.IntVar()
        self.textbox.mark_set("matchStart", "1.0")
        self.textbox.mark_set("matchEnd", "1.0")
        while True:
            index = self.textbox.search(regex,"matchEnd","end",count=count,regexp=True)
            if index=="": break

            self.textbox.mark_set("matchStart",index)
            self.textbox.mark_set("matchEnd", "%s+%sc" % (index, count.get()))
            self.textbox.tag_add(tag,"matchStart","matchEnd")

            #Futile attempt to remove the ** from the headings
            #text = self.textbox.get("matchStart", "matchEnd")
            #orig_length = len(text)
            #text = text.replace("*","").ljust(orig_length, " ")
            #self.textbox.delete("matchStart", "matchEnd")
            #self.textbox.insert("matchStart", text)

if __name__ == '__main__':
    text = """*Heading 1*
A paragraph
**Heading 2**
Some more text

***Heading 3***
Conclusion
"""
    root = tk.Tk()
    root.withdraw()
    HelpDialog(root,text)

1 回复 | 直到 6 年前

Bryan Oakley 6 年前

delete delete("matchEnd-1c") -1c

tag_match

self.textbox.delete("matchStart")
self.textbox.delete("matchEnd-1c")

self.tag_match(r"^[\*]{1}[\w\d -]+[\*]{1}$", "h1", 1)

n

def tag_match(self, regex, tag, n):
    ...
    while True:
        ...
        self.textbox.delete("matchEnd-{}c".format(n), "matchEnd")
        self.textbox.delete("matchStart", "matchStart+{}c".format(n))