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43 lines
1.1 KiB
Bash
43 lines
1.1 KiB
Bash
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#!/usr/bin/env bash
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# Usage: ./split_pdf.sh filename.pdf
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set -e
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PDF_FILE="$1"
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DEFAULT_SPLIT_SIZE=5
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SPLIT_SIZE=${PDF_SPLIT_PAGE_SIZE:-$DEFAULT_SPLIT_SIZE}
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# Validate that SPLIT_SIZE is an integer
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if ! [[ "$SPLIT_SIZE" =~ ^[0-9]+$ ]]; then
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echo "Error: PDF_SPLIT_PAGE_SIZE must be an integer."
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exit 1
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fi
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DEFAULT_DIR="$HOME/tmp/pdf-splits"
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PDF_SPLITS_DIR="${PDF_SPLITS_DIR:-$DEFAULT_DIR}"
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PDF_NAME=$(basename "$PDF_FILE" .pdf)
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MD5_SUM=$(md5sum "$PDF_FILE" | awk '{ print $1 }')
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PDF_DIR="$PDF_SPLITS_DIR/$PDF_NAME-${MD5_SUM}_split-${SPLIT_SIZE}"
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# Create directory if it does not exist
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mkdir -p "$PDF_DIR"
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# Total number of pages
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TOTAL_PAGES=$(qpdf --show-npages "$PDF_FILE")
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# Split PDF into $SPLIT_SIZE-page chunks
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START_PAGE=1
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while [ "$START_PAGE" -le "$TOTAL_PAGES" ]; do
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END_PAGE=$((START_PAGE + SPLIT_SIZE - 1))
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if [ "$END_PAGE" -gt "$TOTAL_PAGES" ]; then
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END_PAGE=$TOTAL_PAGES
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fi
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OUTPUT_FILE="$PDF_DIR/${PDF_NAME}_pages_${START_PAGE}_to_${END_PAGE}.pdf"
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qpdf "$PDF_FILE" --pages . "$START_PAGE"-"$END_PAGE" -- "$OUTPUT_FILE"
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echo "Created $OUTPUT_FILE"
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START_PAGE=$((END_PAGE + 1))
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done
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echo "All parts have been saved to $PDF_DIR"
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