dex*_*now 2 csv bash shell json
我试图将下面的csv转换成json格式.
Africa,Kenya,NAI,281
Africa,Kenya,NAI,281
Asia,India,NSI,100
Asia,India,BSE,160
Asia,Pakistan,ISE,100
Asia,Pakistan,ANO,100
European Union,United Kingdom,LSE,100
这是所需的json格式,我无法创建它.我将在此下面发布我的工作..任何帮助或方向将不胜感激...
{"name":"Africa",
"children":[
{"name":"Kenya",
"children":[
{"name":"NAI","size":"109"},
{"name":"NAA","size":"160"}]}]},
{"name":"Asia",
"children":[
{"name":"India",
"children":[
{"name":"NSI","size":"100"},
{"name":"BSE","size":"60"}]},
{"name":"Pakistan",
"children":[
{"name":"ISE","size":"120"},
{"name":"ANO","size":"433"}]}]},
{"name":"European Union",
"children":[
{"name":"United Kingdom",
"children":[
{"name":"LSE","size":"550"},
{"name":"PLU","size":"123"}]}]}
工作正在进行中.
$ 1是上面粘贴的csv值的文件.
#!/bin/bash
pcountry=$(head -1 $1 | cut -d, -f2)
cat $1 | while read line ; do
region=$(echo $line|cut -d, -f1)
country=$(echo $line|cut -d, -f2)
code=$(echo $line|cut -d, -f3-)
size=$(echo $line|cut -d, -f4)
if test "$pcountry" == "$country" ;
then
echo -e {\"name\":\"$region\", '\n' \"children\": [ '\n'{\"name\":\"$country\",'\n'\"children\": [ '\n' \{\"name\":\"NAI\",\"size\":\"$size\"\}
else
if test "$pregion" == "$region"
then :
else
echo -e ,'\n'{\"name\":\""$region\", '\n' \"children\": [ '\n'{\"name\":\"$country\",'\n'\"children\": [ '\n' \{\"name\":\"NAI\",\"size\":\"$size\"\},
pcountry=$country
pregion=$region
fi ; done
正如许多评论者所说，使用shell进行这种转换是一个可怕的想法。而且，仅用bash内建函数几乎不可能做到这一点。和外壳脚本用于标准UNIX命令等结合sed，awk，cut等反正。您应该选择一种为此类迭代解析/处理而构建的更好的语言，以解决您的问题。
但是，由于太晚了，我喝了太多咖啡，所以我整理了一个bash脚本（并添加了一些sed语法分析帮助），该脚本将获取.csv您拥有的示例数据并以您指定的格式输出JSON。这是脚本：
#! /bin/bash
# Initial input file format:
#
# Africa,Kenya,NAI,281
# Africa,Kenya,NAA,281
# Asia,India,NSI,100
# Asia,India,BSE,160
# Asia,Pakistan,ISE,100
# Asia,Pakistan,ANO,100
# European Union,United Kingdom,LSE,100
#
# Intermediate file format for parsing to JSON:
#
# Africa|Kenya:NAI=281
# Asia|India:BSE=160&NSI=100|Pakistan:ISE=100&ANO=100
# European Union|United Kingdom:LSE=100
#
# Call as:
#
# $ ./script INPUTFILE.csv >OUTPUTFILE.json
#
# temporary files for output/parsing
TMP="./tmp.dat"
TMP2="./tmp2.dat"
>$TMP
>$TMP2
# read through initial file and output intermediate format
while read line
do
region=$(echo $line | cut -d, -f1)
country=$(echo $line | cut -d, -f2)
code=$(echo $line | cut -d, -f3)
size=$(echo $line | cut -d, -f4)
# region record already started
if grep "^$region" $TMP 2>&1 >/dev/null ;then
>$TMP2
while read rec
do
if echo $rec | grep "^$region" 2>&1 >/dev/null
then
if echo "$rec" | grep "\|$country:" 2>&1 >/dev/null
then
echo "$rec" | sed -e 's/\('"$country"':[^\|][^\|]*\)/\1\&'"$code"'='"$size"'/' >>$TMP2
else
echo "$rec|$country:$code=$size" >>$TMP2
fi
else
echo $rec >>$TMP2
fi
done < $TMP
mv $TMP2 $TMP
else
# new region
echo "$region|$country:$code=$size" >>$TMP
fi
done < $1
# Parse through our intermediary format and output JSON to standard out
echo "["
country_count=$(cat $TMP | wc -l)
while read line
do
country=$(echo $line | cut -d\| -f1)
echo "{ \"name\": \"$country\", "
echo " \"children\": ["
region_count=$(echo $line | cut -d\| -f2- | sed -e 's/|/\n/g' | wc -l)
echo $line | cut -d\| -f2- | sed -e 's/|/\n/g' |
while read region
do
name=$(echo $region | cut -d: -f1)
echo " { \"name\": \"$name\", "
echo " \"children\": ["
code_count=$(echo $region | sed -e 's/^'"$name"'://' -e 's/&/\n/g' | wc -l)
echo $region | sed -e 's/^'"$name"'://' -e 's/&/\n/g' |
while read code_size
do
code=$(echo $code_size | cut -d= -f1)
size=$(echo $code_size | cut -d= -f2)
code_count=$((code_count - 1))
COMMA=""
if [ $code_count -gt 0 ]; then
COMMA=","
fi
echo " { \"name\": \"$code\", \"size\": \"$size\" }$COMMA "
done
echo " ]"
region_count=$((region_count - 1))
if [ $region_count -gt 0 ]; then
echo " },"
else
echo " }"
fi
done
echo " ]"
country_count=$((country_count - 1))
COMMA=""
if [ $country_count -gt 0 ]; then
COMMA=","
fi
echo "}$COMMA"
done < $TMP
echo "]"
exit 0
并且，这是上面脚本的结果输出：
[
{ "name": "Africa",
"children": [
{ "name": "Kenya",
"children": [
{ "name": "NAI", "size": "281" },
{ "name": "NAA", "size": "281" }
]
}
]
},
{ "name": "Asia",
"children": [
{ "name": "India",
"children": [
{ "name": "NSI", "size": "100" },
{ "name": "BSE", "size": "160" }
]
},
{ "name": "Pakistan",
"children": [
{ "name": "ISE", "size": "100" },
{ "name": "ANO", "size": "100" }
]
}
]
},
{ "name": "European Union",
"children": [
{ "name": "United Kingdom",
"children": [
{ "name": "LSE", "size": "100" }
]
}
]
}
]
请不要在任何生产环境中使用上述代码。
这是使用jq的解决方案.
如果filter.jq包含以下过滤器
reduce (
split("\n")[] # split string into lines
| split(",") # split data
| select(length>0) # eliminate blanks
) as [$c1,$c2,$c3,$c4] ( # convert to object
{} # e.g. "Africa": { "Kenya": {
; setpath([$c1,$c2,"name"];$c3) # "name": "NAI",
| setpath([$c1,$c2,"size"];$c4) # "size": "281"
) # }, }
| [ # then build final array of objects format:
keys[] as $k1 # [ {
| {name: $k1, children: ( # "name": "Africa",
.[$k1] # "children": {
| keys[] as $k2 # "name": "Kenya",
| {name: $k2, children:.[$k2]} # "children": { "name": "NAI", "size": "281" }
)} # ...
]
并data包含示例数据然后命令
$ jq -M -Rsr -f filter.jq data
产生
[
{
"name": "Africa",
"children": {
"name": "Kenya",
"children": {
"name": "NAI",
"size": "281"
}
}
},
{
"name": "Asia",
"children": {
"name": "India",
"children": {
"name": "BSE",
"size": "160"
}
}
},
{
"name": "Asia",
"children": {
"name": "Pakistan",
"children": {
"name": "ANO",
"size": "100"
}
}
},
{
"name": "European Union",
"children": {
"name": "United Kingdom",
"children": {
"name": "LSE",
"size": "100"
}
}
}
]