Neue Sturktur
This commit is contained in:
64
README.md
64
README.md
@@ -1,37 +1,47 @@
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# PPTX Image Compressor (CaesiumCLT only)
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**Version 1.0.0**
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Ein CLI‑Tool, das **PPTX-Dateien** entpackt, alle Bilder in `ppt/media` mit **CaesiumCLT** komprimiert und anschließend wieder zu einer PPTX packt.
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Es ersetzt nur dann Bilder, **wenn die komprimierte Version kleiner ist**, schreibt ein **CSV-Log** und zeigt eine **Fortschrittsanzeige** sowie eine **Summary inkl. Laufzeit** an.
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Dieses Paket enthält:
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---
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```
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PPTX-Image-Compressor-1.0.0/
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├─ README.md
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├─ install_and_run.bat
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├─ pptx_image_compress.py
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├─ bin/
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│ └─ PUT_caesiumclt_here.txt
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└─ samples/
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└─ README.txt
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```
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## Features
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- **Nur CaesiumCLT** als Bildkompressor (keine Pillow-Abhängigkeit).
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- Unterstützte Bildtypen: **JPG/JPEG, PNG, WebP** (GIF wird übersprungen).
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- **Overwrite-Policy:** `-O bigger` (nur überschreiben, wenn Ziel größer ist).
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- **Multi-Threading**: Parallele Bildverarbeitung.
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- **Log** (`.log` neben der Output-Datei) mit:
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`image_name,size_before,size_after,saving,saving_percent`.
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- **Sauberes Cleanup**: Keine Caesium-Tempdateien in der finalen PPTX.
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## Schnellstart (ohne Admin-Rechte)
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1) Lege `caesiumclt.exe` in den Ordner `bin/` **oder** sorge dafür, dass es im `PATH` liegt.
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2) Doppelklicke `install_and_run.bat` **oder** rufe es in CMD/PowerShell auf, z. B.:
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---
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```bat
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install_and_run.bat -i "C:\Slides\Deck.pptx" -t 8
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```
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## Systemvoraussetzungen
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- **Windows 10/11 (64-bit)**
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- **Keine Admin-Rechte erforderlich**
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- **CaesiumCLT** (portabler Download)
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- **Python** (portabel, ohne Installation) **oder** fertige EXE
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Die Batch lädt bei Bedarf automatisch das **Windows Embeddable Python Package**, entpackt es lokal und führt das Tool aus.
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---
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## Was das Tool macht
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- Entpackt die PPTX in einen Temp‑Ordner
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- Komprimiert **JPG/JPEG, PNG, WebP** mit **CaesiumCLT** (`-q 90`, `-O bigger`)
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- Ersetzt Bilder nur, wenn die komprimierte Datei kleiner ist
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- Schreibt ein CSV‑Log (`.log` neben der Output‑PPTX)
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- Baut eine neue PPTX und zeigt eine Summary (Name, Größe vorher/nachher, Ersparnis %, Zeit)
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- Räumt alle temporären Dateien auf (keine Caesium‑Tempfiles in der finalen PPTX)
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## Installation & Setup
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## Hinweise
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- **GIF** wird übersprungen (keine Rekodierung).
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- `-t` steuert die Parallelität (Python‑Threads); intern wird `caesiumclt --threads 1` gesetzt, sobald `-t > 1`, um Oversubscription zu vermeiden.
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### 1) CaesiumCLT installieren
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1. Lade **CaesiumCLT** von GitHub herunter:
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[https://github.com/Lymphatus/caesium-clt/releases](https://github.com/Lymphatus/caesium-clt)
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2. Entpacke `caesiumclt.exe` in einen Ordner, z. B. `C:\Tools\caesiumclt`.
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3. Füge den Ordner temporär zum PATH hinzu (optional):
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```bat
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set PATH=C:\Tools\caesiumclt;%PATH%
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```
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## Manuelle Nutzung des .py (falls Python vorhanden)
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```bat
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python pptx_image_compress.py -i "C:\Pfad\input.pptx" -t 8
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```
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## Quellen & Tools
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- CaesiumCLT – Projekt/Downloads: https://github.com/Lymphatus/caesium-clt
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- Windows Embeddable Python Package – Doku/Downloads: https://docs.python.org/3/using/windows.html
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1
bin/PUT_caesiumclt_here.txt
Normal file
1
bin/PUT_caesiumclt_here.txt
Normal file
@@ -0,0 +1 @@
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Place caesiumclt.exe in this folder or ensure it is available on PATH.
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@@ -1,3 +1,4 @@
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@echo off
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setlocal EnableExtensions EnableDelayedExpansion
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@@ -29,7 +30,7 @@ if exist "%SELF_DIR%%CAE_EXE%" (
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where /q %CAE_EXE%
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if errorlevel 1 (
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echo [ERROR] ^> 'caesiumclt.exe' nicht gefunden.
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echo Lege 'caesiumclt.exe' neben diese BAT ^(empfohlen^)
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echo Lege 'caesiumclt.exe' neben diese BAT (empfohlen)
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echo oder sorge dafuer, dass es im PATH liegt.
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exit /b 2
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)
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@@ -89,7 +90,7 @@ if not defined PY_CMD (
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exit /b 5
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)
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rem ---- Optional: 'import site' im Embeddable aktivieren (freundlich fuer spaetere Erweiterungen) ----
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rem ---- Optional: 'import site' im Embeddable aktivieren ----
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if exist "%PY_DIR%" (
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for /f "delims=" %%F in ('dir /b "%PY_DIR%\python3*.pth" 2^>nul') do (
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set "PTH_FILE=%PY_DIR%\%%F"
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@@ -111,7 +112,6 @@ echo.
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echo [%APP_NAME%] Starte ...
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echo Command: "%PY_CMD%" "%SCRIPT%" %*
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echo.
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"%PY_CMD%" "%SCRIPT%" %*
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set "RC=%ERRORLEVEL%"
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@@ -28,21 +28,16 @@ from datetime import timedelta
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from concurrent.futures import ThreadPoolExecutor, as_completed
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from threading import Lock
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# -------------------- Version --------------------
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__version__ = "1.0.0"
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# -------------------- Konfiguration --------------------
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ALLOWED_EXT = {".jpg", ".jpeg", ".png", ".webp", ".gif"} # GIF wird übersprungen
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CAESIUM_QUALITY = 90 # -q 90
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ALLOWED_EXT = {".jpg", ".jpeg", ".png", ".webp", ".gif"}
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CAESIUM_QUALITY = 90
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PROGRESS_BAR_LEN = 40
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TEMP_PREFIX = "pptx_compress_"
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# -------------------- Utilities --------------------
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def human_mb(nbytes: int) -> float:
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return round(nbytes / (1024 * 1024), 2)
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def ensure_clean_file(path: Path):
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if path.exists():
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try:
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@@ -53,7 +48,6 @@ def ensure_clean_file(path: Path):
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except Exception:
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pass
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def cleanup_old_temps():
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tmp_root = Path(tempfile.gettempdir())
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for p in tmp_root.glob(f"{TEMP_PREFIX}*"):
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@@ -65,15 +59,13 @@ def cleanup_old_temps():
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except Exception:
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pass
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def print_progress(i: int, total: int):
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if total <= 0:
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return
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done = int(PROGRESS_BAR_LEN * i / total)
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bar = "█" * done + "-" * (PROGRESS_BAR_LEN - done)
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pct = int(i * 100 / total)
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print(f"\rBilder: |{bar}| {i}/{total} ({pct}%)", end="", flush=True)
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print(f"
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Bilder: |{bar}| {i}/{total} ({pct}%)", end="", flush=True)
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def zip_dir_to_pptx(src_dir: Path, out_pptx: Path):
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@@ -83,53 +75,37 @@ def zip_dir_to_pptx(src_dir: Path, out_pptx: Path):
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full = Path(root) / f
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rel = full.relative_to(src_dir)
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z.write(full, arcname=str(rel))
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def which(cmd: str) -> str | None:
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def which(cmd: str):
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return shutil.which(cmd)
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"""
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Ruft caesiumclt auf, um eine komprimierte Version zu erzeugen.
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Output wird ins out_dir geschrieben (gleicher Filename).
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Gibt Pfad zur erzeugten Datei zurück oder None bei Fehler.
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"""
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def compress_with_caesium(original: Path, out_dir: Path, caesium_threads: int | None) -> Path | None:
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exe = which("caesiumclt")
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raise RuntimeError(
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"❌ 'caesiumclt' wurde nicht gefunden. Bitte CaesiumCLT installieren und in PATH verfügbar machen."
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)
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if not exe:
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raise RuntimeError("❌ 'caesiumclt' wurde nicht gefunden. Bitte CaesiumCLT installieren und in PATH verfügbar machen.")
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# Nur Formate an Caesium geben, die es unterstützt: JPG/JPEG, PNG, WEBP
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out_dir.mkdir(parents=True, exist_ok=True)
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ext = original.suffix.lower()
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return None # GIF & andere werden übersprungen
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cmd = [
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exe,
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"-q", str(CAESIUM_QUALITY),
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"-O", "bigger", # <<< nur überschreiben, wenn Ziel größer ist
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"-o", str(out_dir),
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]
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if ext not in {".jpg", ".jpeg", ".png", ".webp"}:
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return None
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cmd = [exe, "-q", str(CAESIUM_QUALITY), "-O", "bigger", "-o", str(out_dir)]
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if caesium_threads is not None:
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cmd += ["--threads", str(caesium_threads)]
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cmd += [str(original)]
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try:
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r = subprocess.run(cmd, capture_output=True, text=True)
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sys.stderr.write(f"\n[caesiumclt] Fehler bei {original.name}:\n{r.stderr}\n")
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if r.returncode != 0:
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sys.stderr.write(f"
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[caesiumclt] Fehler bei {original.name}:
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{r.stderr}
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")
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return None
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out_file = out_dir / original.name
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return out_file if out_file.exists() else None
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sys.stderr.write(f"\n[caesiumclt] Ausnahme bei {original.name}: {ex}\n")
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except Exception as ex:
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sys.stderr.write(f"
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[caesiumclt] Ausnahme bei {original.name}: {ex}
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")
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return None
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def format_duration(seconds: float) -> str:
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total_ms = int(round(seconds * 1000))
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@@ -139,27 +115,14 @@ def format_duration(seconds: float) -> str:
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hms, frac = base.split(".", 1)
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return f"{hms}.{frac[:2]}"
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return base
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def main():
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start_time = time.perf_counter()
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parser = argparse.ArgumentParser(
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description="PPTX Grafik-Komprimier-Tool (nur CaesiumCLT, Multi-Thread, sauberes Cleanup)",
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formatter_class=argparse.ArgumentDefaultsHelpFormatter,
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)
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parser = argparse.ArgumentParser(description="PPTX Grafik-Komprimier-Tool (nur CaesiumCLT, Multi-Thread, sauberes Cleanup)", formatter_class=argparse.ArgumentDefaultsHelpFormatter)
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parser.add_argument("-i", "--input", help="Input-PPTX", required=False)
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parser.add_argument(
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"-t", "--threads",
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type=int,
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default=min(32, os.cpu_count() or 4),
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help="Anzahl paralleler Threads für die Bildverarbeitung"
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)
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parser.add_argument(
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"--version",
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action="version",
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version=f"%(prog)s {__version__}"
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)
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parser.add_argument("-o", "--output", help="Output-PPTX", required=False)
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parser.add_argument("-t", "--threads", type=int, default=min(32, os.cpu_count() or 4), help="Anzahl paralleler Threads für die Bildverarbeitung")
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parser.add_argument("--version", action="version", version=f"%(prog)s {__version__}")
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args = parser.parse_args()
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@@ -172,28 +135,22 @@ def main():
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if not input_pptx.exists() or input_pptx.suffix.lower() != ".pptx":
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print("❌ Eingabedatei existiert nicht oder ist keine .pptx")
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sys.exit(2)
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if args.output:
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output_pptx = Path(args.output).resolve()
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else:
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output_pptx = input_pptx.with_name(f"{input_pptx.stem}_compressed.pptx")
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output_pptx = Path(args.output).resolve() if args.output else input_pptx.with_name(f"{input_pptx.stem}_compressed.pptx")
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# Vorherige Temp-Files & existierendes Output löschen
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cleanup_old_temps()
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ensure_clean_file(output_pptx)
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# --- Zwei getrennte Temp-Verzeichnisse ---
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work_dir = Path(tempfile.mkdtemp(prefix=TEMP_PREFIX + "work_")) # entpackte PPTX
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scratch_dir = Path(tempfile.mkdtemp(prefix=TEMP_PREFIX + "scratch_")) # Caesium-Ausgaben (außerhalb!)
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work_dir = Path(tempfile.mkdtemp(prefix=TEMP_PREFIX + "work_"))
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scratch_dir = Path(tempfile.mkdtemp(prefix=TEMP_PREFIX + "scratch_"))
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# Logdatei neben Output
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log_file = output_pptx.with_suffix(".log")
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log_lines = ["image_name,size_before,size_after,saving,saving_percent\n"]
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ensure_clean_file(log_file)
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log_lines = ["image_name,size_before,size_after,saving,saving_percent
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"]
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size_before = input_pptx.stat().st_size
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# Entpacken
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try:
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with zipfile.ZipFile(input_pptx, "r") as z:
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z.extractall(work_dir)
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@@ -208,15 +165,13 @@ def main():
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total = len(images)
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print(f"🔧 Finde Bilder in {media_dir} ... {total} Kandidaten")
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print_progress(0, total)
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# Vorab prüfen, ob caesiumclt verfügbar ist
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print("\n❌ 'caesiumclt' nicht gefunden. Bitte installieren und in PATH verfügbar machen.")
|
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if not which("caesiumclt"):
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print("
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❌ 'caesiumclt' nicht gefunden. Bitte installieren und in PATH verfügbar machen.")
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sys.exit(3)
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# Oversubscription vermeiden: viele Python-Threads -> caesium intern 1 Thread
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caesium_threads = 1 if args.threads and args.threads > 1 else None
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# Thread-sichere Fortschritts- & Log-Verwaltung
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lock = Lock()
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done_count = 0
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@@ -224,52 +179,43 @@ def main():
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def worker(idx: int, img_path: Path):
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nonlocal done_count
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ext = img_path.suffix.lower()
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# GIF überspringen
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orig_size = img_path.stat().st_size
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if ext == ".gif":
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with lock:
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log_lines.append(f"{img_path.name},{orig_size},{orig_size},0,0.0\n")
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done_count += 1
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log_lines.append(f"{img_path.name},{orig_size},{orig_size},0,0.0
|
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")
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print_progress(done_count, total)
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return
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chosen_size = orig_size
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# Eigener Output-Unterordner pro Bild, um Kollisionen zu vermeiden
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try:
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out_sub = scratch_dir / f"img_{idx:06d}"
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caesium_out = compress_with_caesium(img_path, out_sub, caesium_threads)
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if caesium_out and caesium_out.exists():
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s = caesium_out.stat().st_size
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# kleineren ersetzen (atomar)
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if s < orig_size:
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tmp_target = img_path.with_suffix(img_path.suffix + ".tmp")
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shutil.copy2(caesium_out, tmp_target)
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tmp_target.replace(img_path)
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||||
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||||
chosen_size = s
|
||||
chosen_size = orig_size # Original beibehalten
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||||
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||||
except Exception:
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||||
chosen_size = orig_size
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||||
finally:
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||||
saving = orig_size - chosen_size
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||||
saving_percent = round((saving / orig_size) * 100, 2) if orig_size > 0 else 0.0
|
||||
log_lines.append(f"{img_path.name},{orig_size},{chosen_size},{saving},{saving_percent}\n")
|
||||
with lock:
|
||||
log_lines.append(f"{img_path.name},{orig_size},{chosen_size},{saving},{saving_percent}
|
||||
")
|
||||
done_count += 1
|
||||
print_progress(done_count, total)
|
||||
# Parallel ausführen
|
||||
|
||||
if total > 0:
|
||||
with ThreadPoolExecutor(max_workers=max(1, args.threads)) as ex:
|
||||
futures = [ex.submit(worker, i, p) for i, p in enumerate(images, start=1)]
|
||||
pass # Fortschritt wird im Worker gezeichnet
|
||||
for _ in as_completed(futures):
|
||||
pass
|
||||
print() # newline nach Progressbar
|
||||
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||||
print()
|
||||
# --- Safety-Cleanup innerhalb des Arbeitsverzeichnisses ---
|
||||
# 1) Entferne evtl. vorhandene caesium*-Ordner (aus alten Runs)
|
||||
|
||||
for p in work_dir.rglob("*"):
|
||||
try:
|
||||
@@ -277,7 +223,6 @@ def main():
|
||||
shutil.rmtree(p, ignore_errors=True)
|
||||
except Exception:
|
||||
pass
|
||||
# 2) Lösche eventuelle .tmp-Dateien in ppt/media
|
||||
|
||||
media_dir = work_dir / "ppt" / "media"
|
||||
if media_dir.exists():
|
||||
@@ -287,24 +232,23 @@ def main():
|
||||
f.unlink(missing_ok=True)
|
||||
except Exception:
|
||||
pass
|
||||
# Neue PPTX bauen (nur work_dir -> scratch_dir liegt außerhalb und ist damit sicher ausgeschlossen)
|
||||
|
||||
zip_dir_to_pptx(work_dir, output_pptx)
|
||||
size_after = output_pptx.stat().st_size
|
||||
# Log schreiben
|
||||
|
||||
try:
|
||||
with open(log_file, "w", encoding="utf-8") as f:
|
||||
f.writelines(log_lines)
|
||||
except Exception:
|
||||
# Summary
|
||||
pass
|
||||
|
||||
savings_pct = 0.0
|
||||
if size_before > 0:
|
||||
savings_pct = round(100.0 * (size_before - size_after) / size_before, 2)
|
||||
|
||||
elapsed = time.perf_counter() - start_time
|
||||
print("\n✅ Fertig!")
|
||||
|
||||
print("
|
||||
✅ Fertig!")
|
||||
print("Summary")
|
||||
print("-------")
|
||||
@@ -316,7 +260,6 @@ def main():
|
||||
print(f"Zeit benötigt: {format_duration(elapsed)}")
|
||||
print(f"Log-Datei: {log_file}")
|
||||
|
||||
# Aufräumen ALLER temporären Dateien/Ordner
|
||||
finally:
|
||||
try:
|
||||
shutil.rmtree(work_dir, ignore_errors=True)
|
||||
@@ -325,9 +268,7 @@ def main():
|
||||
try:
|
||||
shutil.rmtree(scratch_dir, ignore_errors=True)
|
||||
except Exception:
|
||||
# Zusätzlich: ältere Reste entfernen
|
||||
pass
|
||||
cleanup_old_temps()
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
|
||||
1
samples/README.txt
Normal file
1
samples/README.txt
Normal file
@@ -0,0 +1 @@
|
||||
Place your PPTX files here for testing, or use -i with a full path.
|
||||
Reference in New Issue
Block a user