BASH将单行拆分成键、值对。例如A，B，C| 1,2,3到A,1 B,2 C,3

Question

我正在使用Tshark来拆分一些数据。问题是数据显示在单行上。为了使用它，我想把它拆分成键-值对。例如：

Tshark data- a,b,c,d,e,f,g | 1,2,3,4,5,6,7

我想要这样的格式- a,1 b,2 c,3 d,4 e,5 f,6 g,7

或者- [{a,1},{b,2}] etc..

谢谢!

Answer 1

#!/usr/bin/env bash
#              ^^^^ - note bash; not zsh, not sh

processLine() {
  local data idx      # declare locals so we don't pollute global namespace
  local -a arr1 arr2  # declare local arrays separately
  data=$1             # assign our first positional argument to $data

  # no separator? bail out early
  [[ $data = *" | "* ]] || {
    echo "ERROR: Data not in expected form" >&2
    return 1
  }

  # break our two variables into two separate arrays
  IFS=, read -r -a arr1 <<<"${data%%' | '*}"
  IFS=, read -r -a arr2 <<<"${data#*' | '}"

  # iterate over those arrays by index/key to pair items up
  for idx in "${!arr1[@]}"; do
    printf '%s,%s ' "${arr1[$idx]}" "${arr2[$idx]}"
  done
  printf '\n'  # add a trailing newline
}

processLine 'a,b,c,d,e,f,g | 1,2,3,4,5,6,7'

在https://ideone.com/6Ugk0H上运行此代码

Answer 2

试试这个awk

$ echo "a,b,c,d,e,f,g | 1,2,3,4,5,6,7" | awk -F"[|, ]+" ' { for(i=1;i<=NF/2;i++) printf $i "," $(i+NF/2) " " } '
a,1 b,2 c,3 d,4 e,5 f,6 g,7

Answer 3

由于您还标记了此zsh，因此仅使用其参数扩展的zsh解决方案：

#!/usr/bin/env zsh

data="a,b,c,d,e,f,g | 1,2,3,4,5,6,7"

# Split on pipe into an array
halves=( ${(s:|:)data} ) 
# Split the first array element on comma, first removing trailing spaces
first=( ${(s:,:)${halves[1]%% }} )
# Same with the second element and leading spaces
second=( ${(s:,:)${halves[2]## }} )

# Merge the two arrays by alternating elements, and print out two elements
# at a time so it looks like
# a,1 b,2 c,3 d,4 e,5 f,6 g,7
printf "%s,%s " ${first:^second}
printf "\n"

# Or to render as
# [{a,1},{b,2},{c,3},{d,4},{e,5},{f,6},{g,7}]
pairs=$(printf "{%s,%s}\001" ${first:^second})
printf "[%s]\n" "${(j:,:)${(ps:\001:)pairs}}"