349 lines
13 KiB
Python
349 lines
13 KiB
Python
import sys
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import os
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import sqlite3
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from pypdf import PdfReader
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from PyQt6.QtWidgets import (QApplication, QMainWindow, QWidget, QVBoxLayout,
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QHBoxLayout, QLineEdit, QPushButton, QLabel,
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QFileDialog, QTextBrowser, QProgressBar, QMessageBox,
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QListWidget, QListWidgetItem, QSplitter, QFrame)
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from PyQt6.QtCore import Qt, QThread, pyqtSignal, QUrl
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from PyQt6.QtGui import QDesktopServices
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# --- 1. DATENBANK MANAGER ---
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class DatabaseHandler:
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def __init__(self, db_name="uff_index.db"):
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self.db_name = db_name
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self.init_db()
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def init_db(self):
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conn = sqlite3.connect(self.db_name)
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cursor = conn.cursor()
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cursor.execute("""
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CREATE VIRTUAL TABLE IF NOT EXISTS documents
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USING fts5(filename, path, content);
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""")
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cursor.execute("""
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CREATE TABLE IF NOT EXISTS folders (
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path TEXT PRIMARY KEY,
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alias TEXT
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);
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""")
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conn.commit()
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conn.close()
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def add_folder(self, path):
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conn = sqlite3.connect(self.db_name)
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try:
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conn.execute("INSERT OR IGNORE INTO folders (path, alias) VALUES (?, ?)", (path, os.path.basename(path)))
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conn.commit()
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return True
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except:
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return False
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finally:
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conn.close()
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def remove_folder(self, path):
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conn = sqlite3.connect(self.db_name)
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conn.execute("DELETE FROM folders WHERE path = ?", (path,))
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conn.execute("DELETE FROM documents WHERE path LIKE ?", (f"{path}%",))
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conn.commit()
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conn.close()
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def get_folders(self):
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conn = sqlite3.connect(self.db_name)
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rows = conn.execute("SELECT path FROM folders").fetchall()
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conn.close()
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return [r[0] for r in rows]
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def search(self, query):
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conn = sqlite3.connect(self.db_name)
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safe_query = query.replace('"', '""')
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sql = """
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SELECT filename, path, snippet(documents, 2, '<b>', '</b>', '...', 15)
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FROM documents
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WHERE documents MATCH ?
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ORDER BY rank LIMIT 100
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"""
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try:
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results = conn.execute(sql, (f"{safe_query}*",)).fetchall()
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except:
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results = []
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conn.close()
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return results
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# --- 2. INDEXER (Mit Stop-Funktion) ---
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class IndexerThread(QThread):
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progress_signal = pyqtSignal(str)
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finished_signal = pyqtSignal(int, int, bool) # bool = Wurde abgebrochen?
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def __init__(self, folder_path, db_name="uff_index.db"):
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super().__init__()
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self.folder_path = folder_path
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self.db_name = db_name
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self.is_running = True # Flag zum Steuern
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def stop(self):
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"""Setzt das Flag, damit der Loop stoppt."""
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self.is_running = False
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def _extract_text(self, filepath):
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ext = os.path.splitext(filepath)[1].lower()
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try:
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if ext == ".pdf":
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reader = PdfReader(filepath)
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text = ""
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for page in reader.pages:
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if page_text := page.extract_text(): text += page_text + "\n"
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return text
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elif ext in [".txt", ".md", ".py", ".json", ".csv", ".html", ".log", ".ini", ".xml"]:
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with open(filepath, "r", encoding="utf-8", errors="ignore") as f:
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return f.read()
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return None
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except:
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return None
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def run(self):
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conn = sqlite3.connect(self.db_name)
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# Alten Inhalt des Ordners löschen
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conn.execute("DELETE FROM documents WHERE path LIKE ?", (f"{self.folder_path}%",))
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conn.commit()
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indexed = 0
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skipped = 0
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was_cancelled = False
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for root, dirs, files in os.walk(self.folder_path):
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# Check 1: Wurde Stop gedrückt?
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if not self.is_running:
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was_cancelled = True
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break
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for file in files:
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# Check 2: Auch innerhalb der Dateien prüfen für schnellere Reaktion
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if not self.is_running:
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was_cancelled = True
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break
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self.progress_signal.emit(f"Lese: {file}...")
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path = os.path.join(root, file)
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content = self._extract_text(path)
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if content and len(content.strip()) > 0:
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conn.execute(
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"INSERT INTO documents (filename, path, content) VALUES (?, ?, ?)",
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(file, path, content)
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)
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indexed += 1
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else:
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skipped += 1
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if was_cancelled:
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break
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conn.commit() # Wir speichern, was wir bis zum Abbruch geschafft haben
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conn.close()
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self.finished_signal.emit(indexed, skipped, was_cancelled)
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# --- 3. UI ---
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class UffWindow(QMainWindow):
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def __init__(self):
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super().__init__()
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self.db = DatabaseHandler()
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self.indexer_thread = None
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self.initUI()
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self.load_saved_folders()
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def initUI(self):
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self.setWindowTitle("UFF Text Search v2.1")
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self.resize(1000, 700)
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central = QWidget()
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self.setCentralWidget(central)
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main_layout = QHBoxLayout(central)
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# --- LINKS ---
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left_panel = QFrame()
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left_panel.setFixedWidth(250)
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left_layout = QVBoxLayout(left_panel)
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left_layout.setContentsMargins(0, 0, 0, 0)
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lbl_folders = QLabel("📂 Meine Ordner")
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lbl_folders.setStyleSheet("font-weight: bold; font-size: 14px;")
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self.folder_list = QListWidget()
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self.folder_list.setSelectionMode(QListWidget.SelectionMode.SingleSelection)
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btn_add = QPushButton(" + Hinzufügen")
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btn_add.clicked.connect(self.add_new_folder)
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btn_remove = QPushButton(" - Entfernen")
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btn_remove.clicked.connect(self.delete_selected_folder)
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self.btn_rescan = QPushButton(" ↻ Neu scannen")
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self.btn_rescan.clicked.connect(self.rescan_selected_folder)
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# Der neue Abbrechen-Button (Standardmäßig unsichtbar)
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self.btn_cancel = QPushButton("🛑 Abbrechen")
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self.btn_cancel.setStyleSheet("background-color: #ffcccc; color: #cc0000; font-weight: bold;")
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self.btn_cancel.clicked.connect(self.cancel_indexing)
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self.btn_cancel.hide()
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left_layout.addWidget(lbl_folders)
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left_layout.addWidget(self.folder_list)
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left_layout.addWidget(btn_add)
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left_layout.addWidget(btn_remove)
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left_layout.addStretch() # Spacer
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left_layout.addWidget(self.btn_rescan)
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left_layout.addWidget(self.btn_cancel) # Wird eingeblendet beim Scan
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# --- RECHTS ---
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right_panel = QWidget()
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right_layout = QVBoxLayout(right_panel)
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search_container = QHBoxLayout()
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self.input_search = QLineEdit()
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self.input_search.setPlaceholderText("Suchbegriff eingeben...")
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self.input_search.returnPressed.connect(self.perform_search)
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self.input_search.setStyleSheet("padding: 8px; font-size: 14px;")
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btn_go = QPushButton("Suchen")
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btn_go.setFixedWidth(100)
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btn_go.clicked.connect(self.perform_search)
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search_container.addWidget(self.input_search)
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search_container.addWidget(btn_go)
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self.lbl_status = QLabel("Bereit.")
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self.lbl_status.setStyleSheet("color: #666;")
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self.progress_bar = QProgressBar()
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self.progress_bar.hide()
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self.result_browser = QTextBrowser()
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self.result_browser.setOpenExternalLinks(False)
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self.result_browser.anchorClicked.connect(self.link_clicked)
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self.result_browser.setStyleSheet("background-color: white; border: 1px solid #ccc;")
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right_layout.addLayout(search_container)
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right_layout.addWidget(self.lbl_status)
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right_layout.addWidget(self.progress_bar)
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right_layout.addWidget(self.result_browser)
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splitter = QSplitter(Qt.Orientation.Horizontal)
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splitter.addWidget(left_panel)
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splitter.addWidget(right_panel)
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splitter.setSizes([250, 750])
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main_layout.addWidget(splitter)
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# --- LOGIK ---
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def load_saved_folders(self):
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self.folder_list.clear()
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folders = self.db.get_folders()
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for f in folders:
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item = QListWidgetItem(f)
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item.setToolTip(f)
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self.folder_list.addItem(item)
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def add_new_folder(self):
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folder = QFileDialog.getExistingDirectory(self, "Ordner wählen")
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if folder:
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if self.db.add_folder(folder):
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self.load_saved_folders()
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self.start_indexing(folder)
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else:
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QMessageBox.warning(self, "Info", "Ordner ist bereits vorhanden.")
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def delete_selected_folder(self):
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item = self.folder_list.currentItem()
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if not item: return
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path = item.text()
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if QMessageBox.question(self, "Löschen", f"Ordner entfernen?\n{path}",
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QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No) == QMessageBox.StandardButton.Yes:
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self.db.remove_folder(path)
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self.load_saved_folders()
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self.result_browser.clear()
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self.lbl_status.setText("Ordner entfernt.")
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def rescan_selected_folder(self):
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item = self.folder_list.currentItem()
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if not item:
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QMessageBox.information(self, "Info", "Bitte Ordner links auswählen.")
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return
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self.start_indexing(item.text())
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def start_indexing(self, folder):
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self.set_ui_busy(True)
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self.lbl_status.setText(f"Starte... {os.path.basename(folder)}")
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self.indexer_thread = IndexerThread(folder)
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self.indexer_thread.progress_signal.connect(lambda msg: self.lbl_status.setText(msg))
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self.indexer_thread.finished_signal.connect(self.indexing_finished)
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self.indexer_thread.start()
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def cancel_indexing(self):
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if self.indexer_thread and self.indexer_thread.isRunning():
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self.lbl_status.setText("Breche ab... Bitte warten...")
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self.indexer_thread.stop()
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# Wir warten nicht auf den Thread hier (non-blocking),
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# das finished_signal kümmert sich um den Rest.
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def indexing_finished(self, indexed, skipped, was_cancelled):
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self.set_ui_busy(False)
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if was_cancelled:
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self.lbl_status.setText(f"Abgebrochen. ({indexed} indiziert).")
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QMessageBox.information(self, "Abbruch", f"Vorgang vom Benutzer abgebrochen.\nBis dahin indiziert: {indexed}")
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else:
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self.lbl_status.setText(f"Fertig. {indexed} neu, {skipped} übersprungen.")
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QMessageBox.information(self, "Fertig", f"Scan abgeschlossen!\n{indexed} Dateien im Index.")
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def set_ui_busy(self, busy):
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# Steuert die Buttons während des Scans
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self.input_search.setEnabled(not busy)
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self.folder_list.setEnabled(not busy)
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self.btn_rescan.setVisible(not busy) # Rescan verstecken
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self.btn_cancel.setVisible(busy) # Abbrechen zeigen
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if busy:
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self.progress_bar.setRange(0, 0)
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self.progress_bar.show()
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else:
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self.progress_bar.hide()
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def perform_search(self):
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query = self.input_search.text()
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if not query: return
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results = self.db.search(query)
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self.lbl_status.setText(f"{len(results)} Treffer.")
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html = ""
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if not results:
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html = "<h3 style='color: gray; text-align: center; margin-top: 20px;'>Nichts gefunden.</h3>"
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for filename, filepath, snippet in results:
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file_url = QUrl.fromLocalFile(filepath).toString()
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html += f"""
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<div style='margin-bottom: 10px; padding: 10px; background-color: #f9f9f9; border-left: 4px solid #2980b9;'>
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<a href="{file_url}" style='font-size: 16px; font-weight: bold; color: #2980b9; text-decoration: none;'>
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{filename}
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</a>
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<div style='color: #333; margin-top: 5px; font-family: sans-serif; font-size: 13px;'>{snippet}</div>
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<div style='color: #999; font-size: 11px; margin-top: 4px;'>{filepath}</div>
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</div>
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"""
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self.result_browser.setHtml(html)
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def link_clicked(self, url):
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QDesktopServices.openUrl(url)
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if __name__ == "__main__":
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app = QApplication(sys.argv)
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window = UffWindow()
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window.show()
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sys.exit(app.exec()) |