Cmd-line options and help
Dieser Commit ist enthalten in:
Axel Svensson
Ursprung
823ec4b9cb
Commit
e8eab02591
1 geänderte Dateien mit 66 neuen und 29 gelöschten Zeilen
95
pdf-sign
95
pdf-sign
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@ -2,35 +2,49 @@
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#Dependencies: python3, pdftk, gs, mv, pdfinfo
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import os, queue, re, subprocess, sys, tempfile, threading, time, tkinter as tk
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import argparse, os, queue, re, subprocess, sys, tempfile, threading, time, tkinter as tk
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signatureDir=os.path.expanduser(os.environ['PDF_SIGNATURE_DIR'] if 'PDF_SIGNATURE_DIR' in os.environ else "~/.pdf_signatures")
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# Inspired by https://unix.stackexchange.com/a/141496
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def main(filePath, pagestr=None):
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#filePath=os.path.expanduser(filePath)
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def main(args):
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filePath=args.input
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with tempfile.TemporaryDirectory() as tempdir:
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intmp=lambda fileName: os.path.join(tempdir, fileName)
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# Flatten (make forms non-editable) before signing
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flatPDF=Cell(lambda: subprocess.run(['pdftk', filePath, 'output', intmp('flat.pdf'), 'flatten'], check=True) and intmp('flat.pdf'))
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# Maybe flatten (make forms non-editable) before signing
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@Cell
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def inputPDF():
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if args.flatten:
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outFile=intmp('input.pdf')
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subprocess.run([
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'pdftk', filePath,
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'output', outFile,
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'flatten'
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], check=True)
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return outFile
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return filePath
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# The chosen page
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pageCount=pdfCountPages(flatPDF())
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pageNumber=Cell(int(pagestr) if pagestr else pageCount)
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pagePDF=Cell(lambda: subprocess.run(['pdftk', flatPDF(), 'cat', str(pageNumber()), 'output', intmp('page.pdf')], check=True) and intmp('page.pdf'))
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pageCount=pdfCountPages(inputPDF())
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if args.page < -pageCount or args.page==0 or pageCount < args.page:
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die('Page number out of range')
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pageNumber=Cell(args.page if 0 < args.page else pageCount+args.page+1)
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pagePDF=Cell(lambda: subprocess.run(['pdftk', inputPDF(), 'cat', str(pageNumber()), 'output', intmp('page.pdf')], check=True) and intmp('page.pdf'))
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pageSize=Cell(lambda: pdfGetSize(pagePDF()))
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# The chosen signature
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signatures=[*filter(lambda x: m("^.*\.pdf$", x), os.listdir(signatureDir))]
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if not args.signature and args.batch:
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die('In batch mode, signature must be specified.')
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signatures=[*filter(lambda x: m("^.*\.pdf$", x), os.listdir(signatureDir))] if not args.signature else [None]
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signatureIndex=Cell(0)
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signatureAbsPath=Cell(lambda: os.path.join(signatureDir, signatures[signatureIndex()]))
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signatureSize=Cell(lambda: pdfGetSize(signatureAbsPath()))
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signaturePositionX=Cell(0.5)
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signaturePositionY=Cell(0.75)
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signaturePath=Cell(lambda: args.signature if args.signature else os.path.join(signatureDir, signatures[signatureIndex()]))
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signatureSize=Cell(lambda: pdfGetSize(signaturePath()))
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signaturePositionX=Cell(args.x_coordinate)
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signaturePositionY=Cell(args.y_coordinate)
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signatureScale=Cell(0)
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@Cell
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def signaturePositionedPDF():
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(w, h)=pageSize()
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(sw, sh)=signatureSize()
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resize=1.1**signatureScale()*min(w/sw, h/sh)/3
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resize=1.1**signatureScale()*min(args.width*w/sw, args.height*h/sh)
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dx=w*signaturePositionX()/resize - sw/2
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dy=h*(1-signaturePositionY())/resize - sh/2
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outFile=intmp('signature-positioned.pdf')
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@ -40,7 +54,7 @@ def main(filePath, pagestr=None):
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'-sDEVICE=pdfwrite',
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f'-dDEVICEWIDTHPOINTS={w}', f'-dDEVICEHEIGHTPOINTS={h}', '-dFIXEDMEDIA',
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'-c', f'<</BeginPage{{{resize} {resize} scale {dx} {dy} translate}}>> setpagedevice',
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'-f', signatureAbsPath(),
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'-f', signaturePath(),
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], check=True)
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return outFile
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# The signed page
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@ -73,7 +87,7 @@ def main(filePath, pagestr=None):
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return outFile
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# GUI
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doSign=True
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gui=True
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gui=not args.batch
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if gui:
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doSign=False
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# Commands
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@ -126,9 +140,10 @@ def main(filePath, pagestr=None):
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pagemenu.add_command(label='Last page', underline=0, accelerator='End', command=cmd_lastPage)
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placemenu = tk.Menu(rootmenu, tearoff=0)
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rootmenu.add_cascade(label="Signature", underline=1, menu=placemenu)
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placemenu.add_command(label='Previous signature', underline=0, accelerator='Ctrl-Left', command=cmd_prevSignature)
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placemenu.add_command(label='Next signature', underline=0, accelerator='Ctrl-Right', command=cmd_nextSignature)
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placemenu.add_separator()
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if not args.signature:
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placemenu.add_command(label='Previous signature', underline=0, accelerator='Ctrl-Left', command=cmd_prevSignature)
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placemenu.add_command(label='Next signature', underline=0, accelerator='Ctrl-Right', command=cmd_nextSignature)
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placemenu.add_separator()
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placemenu.add_command(label='Enlarge signature', underline=0, accelerator='+', command=cmd_enlargeSignature)
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placemenu.add_command(label='Shrink signature', underline=0, accelerator='-', command=cmd_shrinkSignature)
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placemenu.add_separator()
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@ -208,19 +223,24 @@ def main(filePath, pagestr=None):
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# End of GUI
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if doSign:
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[ignored, pathPart1, pathPart2] = m("^(.*)(\.[Pp][Dd][Ff])$", filePath)
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signedFilePath=f'{pathPart1}.signed{pathPart2}'
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signedFilePath=args.output if args.output else f'{pathPart1}.signed{pathPart2}'
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if os.path.exists(signedFilePath):
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backupFilePath=f'{pathPart1}.signed.backup{time.strftime("%Y%m%d_%H%M%S")}{pathPart2}'
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subprocess.run([
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'mv',
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signedFilePath,
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backupFilePath,
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], check=True)
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print(f'Renamed {signedFilePath} to {backupFilePath}')
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if args.existing=='backup':
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backupFilePath=f'{signedFilePath}.backup{time.strftime("%Y%m%d_%H%M%S")}'
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subprocess.run([
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'mv',
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signedFilePath,
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backupFilePath,
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], check=True)
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print(f'Renamed {signedFilePath} to {backupFilePath}')
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elif args.existing=='fail':
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die(f'Output file {signedFilePath} already exists')
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else:
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assert args.existing=='overwrite'
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pnr=pageNumber()
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subprocess.run([
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'pdftk',
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f'A={flatPDF()}',
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f'A={inputPDF()}',
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f'B={signedPagePDF()}',
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'cat',
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*([f'A1-{pnr-1}'] if 1 < pnr else []),
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@ -310,4 +330,21 @@ class NonBlockingIterable:
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except queue.Empty:
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yield None
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main(*sys.argv[1:])
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def die(reason):
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print(reason, file=sys.stderr)
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sys.exit(2)
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parser = argparse.ArgumentParser(description='Sign a PDF file.')
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parser.add_argument('input', metavar='input.pdf', type=str, help='Input PDF file.')
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parser.add_argument('-p', '--page', type=int, default=-1, help='The page to sign, negative for counting from the end. (default: -1)')
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parser.add_argument('-s', '--signature', type=str, help='Path to file used as signature. Required in batch mode. In GUI mode, the user can choose among files in $PDF_SIGNATURE_DIR or ~/.pdf_signatures.')
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parser.add_argument('-x', '--x-coordinate', type=float, default=0.5, help='Horizontal coordinate of signature center, in page width units. (default: 0.5)')
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parser.add_argument('-y', '--y-coordinate', type=float, default=0.75, help='Vertical coordinate of signature center, in page height units. (default: 0.75)')
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parser.add_argument('-W', '--width', type=float, default=0.28, help='Width of box to fit signature to, in page width units. (default: 0.28)')
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parser.add_argument('-H', '--height', type=float, default=0.28, help='Height of box to fit signature to, in page height units. (default: 0.28)')
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parser.add_argument('-o', '--output', type=str, help='Output file. (default: Add ".signed" before the extension)')
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parser.add_argument('-b', '--batch', action=argparse.BooleanOptionalAction, default=False, help='Batch mode: do not show GUI.')
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parser.add_argument('-f', '--flatten', action=argparse.BooleanOptionalAction, default=True, help='Flatten before signing.')
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parser.add_argument('-e', '--existing', type=str, choices=['backup', 'overwrite', 'fail'], default='backup', help='What to do if output file exists. (default: backup)')
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main(parser.parse_args(sys.argv[1:] or ['-h']))
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