从bash中的csv文件生成Key值

Question

我正在尝试从csv文件生成一个hashmap

header1,header2,header3,header4
value1,val2,val3,val4

大约有一千行，我正在尝试生成 value1 header2“val2”header 3“val3”header4“val4”

Answer 1

给出测试文件

header1,header2,header3,header4
value1,val2,val3,val4
a,b,c,d

我们可以做到

declare -A map
{
    # read the first line
    IFS=, read -ra headers

    # iterate over the rest of the lines
    while IFS=, read -ra values; do 
        # create the mapping
        for i in "${!headers[@]}"; do 
            map["${headers[i]}"]=${values[i]}
        done
        # do something with the map
        declare -p map
    done
} < file.csv

输出

declare -A map='([header4]="val4" [header1]="value1" [header3]="val3" [header2]="val2" )'
declare -A map='([header4]="d" [header1]="a" [header3]="c" [header2]="b" )'

但这似乎是不必要的复杂。在headers和values数组之间建立公共索引可能就足够了。