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[英]I'm not able to perform validation for the input data in my mongoengine model class
[英]I'm not able to process data through awk
我正在嘗試使用awk處理數據,但無法獲得正確的結果。如果在某處做錯了,請告知數據:-test.txt
"A","B","ls",,"This,is,the,test",T,
"k",O,"mv",,"This,is,the,2nd test","L",
"C",J,"cd",,"This,is,the,3rd test",,
awk 'BEGIN { FS=","; OFS="|" } { nf=0; delete f; while ( match($0,/([^,]+)|(\"[^\"]+\")/) ) { f[++nf] = substr($0,RSTART,RLENGTH); $0 = substr($0,RSTART+RLENGTH); }; print f[2],f[3],f[4],f[5] }' test.txt
烏普特
"B"|"ls"|"This,is,the,test"|T
O|"mv"|"This,is,the,2nd test"|"L"
J|"cd"|"This,is,the,3rd test"|
但是輸出應該是這樣的
"B"|"ls"||"This,is,the,test"|T
O|"mv"||"This,is,the,2nd test"|"L"
J|"cd"||"This,is,the,3rd test"|
awk -F\" '{q="\""; print q$4q"|"q$6q"||"q$8q}'
awk -vFPAT='"[^"]*"' '{$0=$2"|"$3"||"$4}1' FILE
使用拍
使用您的新輸入和任何awk:
$ cat tst.awk
BEGIN { FS=","; OFS="|" }
{
# 1) Replace all FSs inside quotes with the value of RS
# since we know that RS cannot be present in any record:
head = ""
tail = $0
while( match(tail,/"[^"]+"/) ) {
trgt = substr(tail,RSTART,RLENGTH)
gsub(FS,RS,trgt)
head = head substr(tail,1,RSTART-1) trgt
tail = substr(tail,RSTART+RLENGTH)
}
$0 = head tail
# 2) re-compile the record to replace FSs with OFSs:
$1 = $1
# 3) restore the RSs within quoted fields to FSs:
gsub(RS,FS)
# 4) remove the first and last fields:
gsub("^[^" OFS "]*[" OFS "]|[" OFS "][^" OFS "]*$","")
print
}
$ awk -f tst.awk file
"B"|"ls"||"This,is,the,test"|T
O|"mv"||"This,is,the,2nd test"|"L"
J|"cd"||"This,is,the,3rd test"|
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