如何从有效负载日志中打印格式化数据？
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
boards.remove(at: indexPath.row)
// use async to avoid showing white background.
DispatchQueue.main.async {
tableView.deleteRows(at: [indexPath], with: .automatic)
}
}
}
我正在寻找的输出是 -
Time: 1970-01-01T00
ID:sdafasdfsladfsdfas
Key:sadfljasdkfsf
record {'record1:32423
record2:45245
record3:dasfas'
}
Time: 1970-01-01T001
ID:sdafasdfsladfsdfas1
Key:sadfljasdkfsf1
record {'record1:32423
record2:452451
record3:dasfas1'
}
我能够使用多个命令来实现输出，但我正在寻找一种正确的方法来在一个命令中获取它。
答案 0 :(得分：2)
您能否请关注awk并告诉我这是否对您有所帮助。
解决方案1： 记录字符串的输出应来自第1条记录的起点：
awk -v s1="'" -F' |:' ' ##creating a variable named s1 whose value is single quote and setting field separator as space or colon here.
$0 ~ s1{ ##Checking if line is having s1 variable in it then do following:
gsub(s1,"")} ##Global substituting s1 value with NULL in current line.
{
sub(/^ +/,"") ##Substituting initial space with NULL in all lines(if present).
}
/^}/{ ##Checking if a line starts from } then do following:
len=i=add=val="" ##Nullifying variables len,i,add and val here.
}
/Time/||/ID/||/Key/{ ##Checking condition here if a line has string(s) Time or ID or Key in it then do following:
val=val?val "|" $NF:$NF ##Creating variable named val whose value is concatenating its own value each time with current lines last field value.
}
/^record /{ ##Checking condition here if a line is having string record in it and it starts from it then do following:
sub(/{/,""); ##Substitute { with NULL to current line.
add=length($NF)>prev?length($NF)-prev:(prev?prev:prev-length($NF)); ##creating variable named add and checking condition length($NF)>prev if this is true then do length($NF)-prev otherwise check if variable prev is present then do prev or do a prev-length($NF).
val=val?val "|" $2 ":" $3:$2 ":" $3; ##Creating variable val here whose value is concatenating its own values and will add $2 ":" $3 each time too.
prev=length($NF) ##creating variable named prev which will have the length of last field in it.
}
/^record[0-9]+/{ ##Checking condition here if a line starts from string record and followed by digits then do following:
add=length($NF)>prev?length($NF)-prev:prev-length($NF); ##Creating variable named add here where checking condition length($NF)>prev if it is true then do length($NF) or do prev-length($NF) here.
len=length(val)+add; ##Creating variable named len here whose value is addition of add and length of variable val.
if(++i==1){ ##Checking condition if variable i value is 1 here then do following:
print val}; ##Printing the value of variable val here.
printf("%+"len"s\n",$0) ##Using the printf to print the value of len to print spaces till the length of len and then printing current line.
}
' length_question ##Mentioning the Input_file name here.
输出如下。
1970-01-01T00|sdafasdfsladfsdfas|sadfljasdkfsf|record1:32423
record2:45245
record3:dasfas
1970-01-01T001|sdafasdfsladfsdfas1|sadfljasdkfsf1|record1:32423
record2:452451
record3:dasfas1
解决方案第二： 哪个OP发布的记录字符串应该从第一个记录字符串的位置开始：
awk -v s1="'" -F' |:' ' ##creating a variable named s1 whose value is a single quote and creating field separator as space OR colon here.
$0 ~ s1{ ##Checking if a line has variable s1(single quote) in it, if yes that do following:
gsub(s1,"") ##Globally substitute s1 with NULL in current line.
}
{
sub(/^ +/,"") ##Substituting initial space with NULL for every line in case it is present on it.
}
/^}/{ ##Checking if a line is starting from } then do following:
len=i=add=val="" ##Nullifying variables named len,i,add,val here.
}
/Time/||/ID/||/Key/{ ##Checking a condition if a line has string(s) either Time or ID or Key in it then do following:
val=val?val "|" $NF:$NF ##creating variable named val here whose value will be concatenating with its own value and with a pipe delimiter.
}
/^record /{ ##Checking condition here if a line starts from string record then do following:
sub(/{/,""); ##Substituting { with NULL in current line then.
add=length($NF)>prev?length($NF)-prev:(prev?prev:prev-length($NF)); ##Creating a variable named add, where we will check if variable prev value is less than length of current lines last field if yes then have its value as length($NF)-prev OR have its value as prev(if it is not null) or have it prev-length($NF) in it.
val=val?val "|" $2 ":" $3:$2 ":" $3; ##Creating variable named val whose value will be concatenating itself with the values of $2 ":" $3 in it.
if(!prev_val){ ##Checking condition if variable named prev_val is NULL then do following:
prev_val=length(val)}; ##creating variable prev_val whose value is length of variable val here.
prev=length($NF) ##creating variable named prev whose value is length of last field of current line.
}
/^record[0-9]+/{ ##Checking condition here if a line starts from string record and followis with digits in it then do following:
add=length($NF)>prev?length($NF)-prev:prev-length($NF);##Creating variable namd add here checking if length($NF)>prev then make its value as length($NF)-prev or makeits value as prev-length($NF).
len=prev_val+add; ##Creating variable named len whose value is addition of variables prev_val and add.
if(++i==1){print val} ##checking if variable i value is 1 here if yes then print varaible val here.
printf("%+"len"s\n",$0) ##Printing variable lens value in printf to get the enough spaces on line with a new line.
}
' length_question ##mentioning the Input_file name here.
输出如下：
1970-01-01T00|sdafasdfsladfsdfas|sadfljasdkfsf|record1:32423
record2:45245
record3:dasfas
1970-01-01T001|sdafasdfsladfsdfas1|sadfljasdkfsf1|record1:32423
record2:452451
record3:dasfas1
答案 1 :(得分：2)
Awk 解决方案：
awk -F': *' '/^(Time|ID|Key)/{
printf "%s|", $2;
len += length($2)+1
}
/^record/{
f=1; sub(/^[^{]+\{\047/, "");
printf "%s\n", $0; next
}
/\}/{ f=len=0 }
f{
gsub(/^ *|\047$/, "");
printf "%+" len+length($0) "s\n", $0
}' file
-F': *' - 字段分隔符/^(Time|ID|Key)/ - 遇到其中一个关键键（Time或ID或Key）：
printf "%s|", $2 - 打印其值（由第二个字段$2显示），然后以|的形式打印，不会有换行符len += length($2)+1 - 累计每个打印项目的长度（+1 - 包括尾随|字符）/^record/ - 遇到主record行：
f=1 - 设置标记f，确保积极处理record部分sub(/^[^{]+\{\047/, "") - 在字符串开头删除record {'序列printf "%s\n", $0; next - 在先前打印的值之前打印record:<value>序列$0，以换行符\n结束next - 跳转到下一条记录/\}/{ f=len=0 } - 遇到}个字符（作为已处理部分的结尾） - 重置所有关键变量f{ ... } - 关于积极处理的部分：
gsub(/^ *|\047$/, "") - 删除前导空格和/或尾随单引号' printf "%+" len+length($0) "s\n", $0 - 使用总长度$0作为格式缩进长度说明符打印下级记录序列len+length($0) 输出：
1970-01-01T00|sdafasdfsladfsdfas|sadfljasdkfsf|record1:32423
record2:45245
record3:dasfas
1970-01-01T001|sdafasdfsladfsdfas1|sadfljasdkfsf1|record1:32423
record2:452451
record3:dasfas1