78 lines
1.8 KiB
Bash
Executable File
78 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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function process_join() {
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local intput0=$1
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local size0=$2
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local intput1=$3
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local size1=$4
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local output=$5
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local temp_output=${output}.temp
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local temp_size=`expr ${size0} + ${size1}`
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#cat ${intput0} > ${intput0}.orig
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#cat ${intput1} > ${intput1}.orig
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dd if=/dev/zero of=${temp_output} bs=1 count=${temp_size}
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input_size=`stat -c %s ${intput0}`
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if [ $input_size -gt ${size0} ]; then
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dd if=${intput0} of=${temp_output} bs=1 count=${size0}
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else
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dd if=${intput0} of=${temp_output} bs=1 conv=notrunc
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fi
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input_size=`stat -c %s ${intput1}`
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if [ $input_size -gt ${size1} ]; then
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dd if=${intput1} of=${temp_output} seek=${size0} bs=1 count=${size1}
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else
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dd if=${intput1} of=${temp_output} seek=${size0} bs=1 conv=notrunc
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fi
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cat ${temp_output} > ${output}
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rm -rf ${temp_output}
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merge_size=`stat -c %s ${output}`
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if [ ${merge_size} -ne ${temp_size} ]; then
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echo "$output file size is not equal $temp_size, ${merge_size}"
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echo -1
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fi
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return
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}
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function generate_joining() {
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local argv=("$@")
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local i=0
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# Parse args
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while [ $i -lt $# ]; do
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arg="${argv[$i]}"
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#echo "i=$i argv[$i]=${argv[$i]}"
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i=$((i + 1))
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case "$arg" in
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--input0)
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input0="${argv[$i]}" ;;
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--size0)
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size0="${argv[$i]}" ;;
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--input1)
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input1="${argv[$i]}" ;;
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--size1)
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size1="${argv[$i]}" ;;
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--output)
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output="${argv[$i]}" ;;
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esac
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i=$((i + 1))
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done
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if [ -z ${input0} ] || [ ! -f ${input0} ] || [ -z ${size0} ]; then
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return
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fi
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if [ -z ${input1} ] || [ ! -f ${input1} ] || [ -z ${size1} ]; then
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return
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fi
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if [ -z ${output} ]; then
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return
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fi
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echo "$BASH_SOURCE, $LINENO"
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process_join ${input0} ${size0} ${input1} ${size1} ${output}
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echo "$BASH_SOURCE, $LINENO"
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return
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}
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generate_joining $@
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