pyside6 打开.c文件过滤注释等，保留需要的字符

陈Eric

已于 2023-06-07 01:01:40 修改

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分类专栏： Python 文章标签： ui python

于 2023-06-07 00:59:40 首次发布

本文链接：https://blog.youkuaiyun.com/tao0599/article/details/131079020

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文章介绍了如何利用Python的正则表达式库`re`和Qt库中的`QFileDialog`及`QTextEdit`组件，从C源代码中提取特定的配置数据，如`SPICMD`和`SPIDAT`，并去除注释和空白符，以便进一步处理或应用。

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需要提取.c中的配置数据，用以他用，c文件的内容简单举例如下：

#define hello 0
/////

SPICMD(0xFB);
SPIDAT(0x00);
SPIDAT(0x01);

//SPICMD(0xFB);
//SPIDAT(0x02);
//SPIDAT(0x03);

SPICMD(0xFB); //SPIDAT(0x04); SPIDAT(0x05);

SPIDAT(0x08); SPIDAT(0x09);/*
SPICMD(0xFB);
SPIDAT(0x06);
SPIDAT(0x07);
*/

目的是删掉红色部分内容，保留黑色部分数据，并格式化去空格、Tab以及分行。

中间有用好多方法，最后询问了优快云的Gpt给的建议，灵光一闪，用re简单处理好了。

openfile.py

import sys
import re
from PySide6.QtWidgets import QApplication, QMainWindow, QFileDialog, QTextEdit
from PySide6.QtGui import QAction
from openfile_ui import Ui_Form


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.ui = Ui_Form()
        self.ui.setupUi(self)
        self.ui.pushButton.released.connect(self.file_open)

    def file_open(self):
        file_name, _ = QFileDialog.getOpenFileName(self, '打开文件', '', 'C files (*.c)')
        if file_name:
            # with open(file_name, 'r', encoding='utf-8') as file:
            file = open(file_name,'r', encoding='utf-8')
            content = file.read()           #as string

            regex_case = re.compile('.*SPICMD.*')
            regex_case1 = re.compile('.*SPIDAT.*')
            regex_case2 = re.compile('//.*')        #找//
            regex_case3 = re.compile(r'/\*.*?\*/', re.DOTALL)  #找/*  */

            text_no_comment1 = re.sub(regex_case2, '', content)# del //后面内容
            content = re.sub(regex_case3, '', text_no_comment1)# del /* */之间内容
            content = content.replace(' ','').replace('    ','').replace(';',';\n')
            # print(content)
            
            tmp_list = content.split('\n')
            content_list = [i for i in tmp_list if i != ""]
            # print(content_list)
            str1 = ''
            for line in content_list:

                regex_case = re.compile('.*SPICMD.*')
                regex_case1 = re.compile('.*SPIDAT.*')

                found_case = regex_case.search(line)
                found_case1 = regex_case1.search(line)

                if found_case or found_case1:
                    # print(line)
                    str1 = str1 + line + '\n'

            self.ui.textEdit.setPlainText(str1)        
            file.close()


if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(app.exec())

openfile_ui.py

# -*- coding: utf-8 -*-

################################################################################
## Form generated from reading UI file 'openfile_ui.ui'
##
## Created by: Qt User Interface Compiler version 6.4.1
##
## WARNING! All changes made in this file will be lost when recompiling UI file!
################################################################################

from PySide6.QtCore import (QCoreApplication, QDate, QDateTime, QLocale,
    QMetaObject, QObject, QPoint, QRect,
    QSize, QTime, QUrl, Qt)
from PySide6.QtGui import (QBrush, QColor, QConicalGradient, QCursor,
    QFont, QFontDatabase, QGradient, QIcon,
    QImage, QKeySequence, QLinearGradient, QPainter,
    QPalette, QPixmap, QRadialGradient, QTransform)
from PySide6.QtWidgets import (QApplication, QPushButton, QSizePolicy, QTextEdit,
    QVBoxLayout, QWidget)

class Ui_Form(object):
    def setupUi(self, Form):
        if not Form.objectName():
            Form.setObjectName(u"Form")
        Form.resize(404, 271)
        self.verticalLayoutWidget = QWidget(Form)
        self.verticalLayoutWidget.setObjectName(u"verticalLayoutWidget")
        self.verticalLayoutWidget.setGeometry(QRect(0, 0, 401, 271))
        self.verticalLayout = QVBoxLayout(self.verticalLayoutWidget)
        self.verticalLayout.setObjectName(u"verticalLayout")
        self.verticalLayout.setContentsMargins(0, 0, 0, 0)
        self.textEdit = QTextEdit(self.verticalLayoutWidget)
        self.textEdit.setObjectName(u"textEdit")

        self.verticalLayout.addWidget(self.textEdit)

        self.pushButton = QPushButton(self.verticalLayoutWidget)
        self.pushButton.setObjectName(u"pushButton")

        self.verticalLayout.addWidget(self.pushButton)


        self.retranslateUi(Form)

        QMetaObject.connectSlotsByName(Form)
    # setupUi

    def retranslateUi(self, Form):
        Form.setWindowTitle(QCoreApplication.translate("Form", u"Form", None))
        self.pushButton.setText(QCoreApplication.translate("Form", u"&Open", None))
    # retranslateUi

运行结果如下：