Question

给出file.csv：

0.99,Apple,Fruit
22.33,Banjo,Instrument
1.95,Chocolate,Snack

和.bashrc / .bash_profile（非GNU）：

CEND='\e[0;0m'
CRED='\e[0;31m'
CGREEN='\e[0;32m'

我可以将第一列染成红色，就像这样：

for a in $(cut -f 1 -d, - < file.csv); do printf ${CRED}$a${CEND}'\n'; done

但是如何为其他列着色，然后将结果通过管道传输到column -s, -t或其他实用程序以显示整个CSV文件？

所需结果：

0.99 Apple    Fruit
22.33Banjo    Instrument
1.95 ChocolateSnack
|____|________|_________|
 RED GREEN     BLACK

我正在尝试使用颜色分隔列；不是按制表符或空格。

Answer 1

您需要使用IFS。

CEND='\e[0;0m'
CRED='\e[0;31m'
CGREEN='\e[0;32m'


while IFS=, read -r col1 col2 col3
do
    printf "${CRED}$col1${CGREEN}$col2${CEND}$col3\n"
done < path_to_csv_file

编辑

CEND='\e[0;0m'
CRED='\e[0;31m'
CGREEN='\e[0;32m'

CSV_FILE='csv'

read max1 max2 <<< $(awk -F, ' { for (i=1;i<=NF;i++)LENGTH[i]=((x=length($i))>LENGTH[i]?x:LENGTH[i])} END { print LENGTH[1] " " LENGTH[2] }' $CSV_FILE)

while IFS=, read -r col1 col2 col3
do
    printf "${CRED}%-*s${CGREEN}%-*s${CEND}%s\n" ${max1} "${col1}" ${max2} "${col2}" "${col3}"
done < $CSV_FILE

Answer 2

您会考虑使用python吗？如果是，那么

$ cat file.csv
some,name,thing
0.99,Apple,Fruit
22.33,Banjo,Instrument
1.95,Chocolate,Snack

还有colorize_csv.py文件

# colorize_csv.py
# Usage: `python colorize_csv.py file.csv`

from csv import DictReader
import sys


green = "\033[32m"
red = "\033[31m"
yellow = "\033[33m"
reset = "\033[00m"
with open(sys.argv[1]) as file:
    reader = DictReader(file)

    for row in reader:
        line = "{}{:<10s} {}{:<10s} {}{:<10s}{}".format(red, row['some'], green, row['name'], yellow, row['thing'], reset)
        print(line)

如何在终端的CSV文件中为各个列着色？

2 个答案:

编辑