分解一个长字符串，然后将十六进制转换为十进制

如何解决分解一个长字符串，然后将十六进制转换为十进制

从另一个输出，我有一个长字符串：

00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000033B2E3C9FD0803CE8000000000000000000000000000000000000000000000D610B7305BB52FC30A0000000000000000000000000000000AF298D050E4395D69670B12B7F410000000000000000000000000000000000000000000000000000000000000000000000000000

需要分解成 64 个字符的部分：

0000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000033B2E3C9FD0803CE8000000
000000000000000000000000000000000000000D610B7305BB52FC30A0000000
000000000000000000000000AF298D050E4395D69670B12B7F41000000000000
0000000000000000000000000000000000000000000000000000000000000000

然后每一行都需要从十六进制转换为十进制，比如 echo "obase=10; ibase=16; $hexNum" |公元前

十六进制部分很容易解决。我怀疑对长字符串的“awk”操作可以将其分解为 5 个变量.. 上面的 bc 命令可以将其转换为十进制。

解决方法

另一种解决方案

$ fold -w64 file | awk '{print strtonum("0x"$1)}'

0
1000000000000000013287555072
1060000000000000004189203726336
1000000000000000043845843045076197354634048000000
0

,

另一种方法是使用 read -n 64 ... 一次读取 64 个字符，例如

while read -n 64 line && [ "${#line}" -eq 64 ]; do
    echo $line
    echo "value $(bc <<< "obase=10; ibase=16; $line")"
done

（注意：第二个测试 [ "${#line}" -eq 64 ] 仅在长串数字可能以 '\n' 或其他无关字符结尾时才需要）

您可以将长字符串通过管道传输到上面的代码段，也可以将字符串重定向到循环。例如，使用文件 string 中的长输入，您可以执行以下操作：

$ while read -n 64 line && [ "${#line}" -eq 64 ]; do
    echo $line
    echo "value $(bc <<< "obase=10; ibase=16; $line")"
done < string
0000000000000000000000000000000000000000000000000000000000000000
value: 0
0000000000000000000000000000000000000000033B2E3C9FD0803CE8000000
value: 1000000000000000000000000000
000000000000000000000000000000000000000D610B7305BB52FC30A0000000
value: 1060000000000000000000000000000
000000000000000000000000AF298D050E4395D69670B12B7F41000000000000
value: 1000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000000000000000000000000000
value: 0

请注意，每个 64 个字符的字符串的转换值遵循在每个 64 个字符的行下方提供的 "value: = " 前缀。您可以调整输出以满足您的需要。

,

这是一种方法：

input='00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000033B2E3C9FD0803CE8000000000000000000000000000000000000000000000D610B7305BB52FC30A0000000000000000000000000000000AF298D050E4395D69670B12B7F410000000000000000000000000000000000000000000000000000000000000000000000000000'
parts=() nums=()
while [[ -n $input ]]; do parts+=("${input:0:64}"); input=${input:64}; done
for h in "${parts[@]}"; do nums+=( $(echo "obase=10; ibase=16; $h" | bc) ); done

declare -p parts nums

declare -a parts=([0]="0000000000000000000000000000000000000000000000000000000000000000" [1]="0000000000000000000000000000000000000000033B2E3C9FD0803CE8000000" [2]="000000000000000000000000000000000000000D610B7305BB52FC30A0000000" [3]="000000000000000000000000AF298D050E4395D69670B12B7F41000000000000" [4]="0000000000000000000000000000000000000000000000000000000000000000")
declare -a nums=([0]="0" [1]="1000000000000000000000000000" [2]="1060000000000000000000000000000" [3]="1000000000000000000000000000000000000000000000000" [4]="0")

如果您不需要保留 64 位十六进制数字，一个循环就足够了：

nums=()
for ((i=0; i<${#input}; i+=64)); do
    nums+=( $(bc <<< "obase=10; ibase=16; ${input:i:64}") )
done

,

最后，我将字符串设置为一个变量（dc） 然后

line1=${dc:1:64}
line2=${dc:65:64}
line3=${dc:129:64}
line4=${dc:193:64}
line5=${dc:257:64}