xcut is my own version of cut, but extended to replace specific fields based
on a regular eXpression pattern.
Usage: xcut OPTION... [FILE]...
From each FILE, replaces text on all or selected parts of lines using PATTERN,
and print all or selected parts to standard output.
Example: xcut -f 1,2 -x 's/\d/<num>/' < file.txt
Options
-d DELIM Use DELIM instead of SPACE for field delimiter.
-f FIELDS Comma separated list of fiels to print (1-index base).
-p FIELDS Comma separated list of fiels to apply PATTERN to. (1-index base).
-x PATTERN sed like Regex to be applied on all or specified parts.
-i Apply PATTERN to inversed -p list.
-s Output lines sorted in the original order.
-h This help.
All options are optional, except in these cases:
If option -p is used, option -x becomes mandatory.
If option -i is used, option -x becomes mandatory.
$ cat example.txt
1 a1 aa11a1 1a =/=
2 a2 aa22a2 1a = =
3 a3 aa33a3 1a =.=
4 a4 aa44a4 1a =&=
5 a5 aa55a5 1a =#=
6 a6 aa66a6 1a =<=
7 a7 aa77a7 1a =\=
$ xcut -d ' ' -f 1,2,3,5 -x "s/\d/b/" -p 1 -i example.txt
1 ab aabbab =/=
7 ab aabbab =\=
2 ab aabbab = =
3 ab aabbab =.=
5 ab aabbab =#=
4 ab aabbab =&=
6 ab aabbab =<=
Download the source code and run the make command to compile it. Then copy the
xcut binary to your ~/bin directory.
This programme uses POSIX to validate files, so it can be compiled in machines where it is available. Besides that, the rest of the code has been writen using the standard C++11.
+----------------+ +----------------+
| ArgManager |◆------------| Arguments |
+----------------+ +----------------+
|
|
|
\/
+----------------+ +----------------+ +----------------+
| Master |◆----------------| Worker |◇--------| Arguments |
+----------------+ +----------------+ +----------------+
◆ ◇
| |
| |
| |
+----------------+ +----------------+ | +----------------+ +----------------+
| DataQueue | | DataReader |---+---| DataProcessor |◆-----| Line |
+----------------+ +----------------+ | +----------------+ +----------------+
|
+----------------+
| DataWriter |
+----------------+
+----------------+ +----------------+ +----------------+ +----------------+ +----------------+ +----------------+ +----------------+
| main | | ArgManager | | Master | | DataWriter | | DataReader | | DataProcessor | | Line |
+----------------+ +----------------+ +----------------+ +----------------+ +----------------+ +----------------+ +----------------+
| | | | | | |
+-+ processArgs | | | | | |
| |---------------------►+-+ | | | | |
| |<---------------------| | | | | | |
| | | | | | | | |
| | getArgs | | | | | | |
| |---------------------►| | | | | | |
| |◄---------------------+-+ | | | | |
| | | | | | | |
| | startWorkers | | | | | |
| |-----------------------|----------------------►+-+ | | | |
| | | | | start 1..1 | | | |
| | | | |-----------------------|---------------------->+-+ | |
| | | | | | | | | |
| | | | | start 1..n | | | | |
| | | | |-----------------------|-----------------------|-|--------------------->+-+ |
| | | | | | | | | | |
| | | | | start 1..1 | | | | | |
| | | | |--------------------->+-+ | | _______|_|_______________________|_____
| | | | | | | | | |loop | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | process | |
| |◄----------------------|-----------------------+-+ | | | | | | |---------------------►+-+ |
| | | | | | | | | | | | | |
_______|_|_______________________|________________________|___________ | | | | | | |◄---------------------+-+ |
|loop | | | | | | | +-+ | | | | |
| | | workersDone | | | | | | |______|_|_______________________|____|
| | |-----------------------|----------------------►+-+ | +-+ | | | |
| | | | | | done | | | +-+ |
| | | | | |---------|-------------|----------------------►+-+ | |
| | | | | | | | | | | |
| | | | | |◄--------|-------------|-----------------------+-+ | |
| | | | | | | | | | |
| | | | | | done | | | | |
| | | | | |---------|-------------|------------------------|----------------------►+-+ |
| | | | | | | | | | | |
| | | | | |◄--------|--------------------------------------------------------------+-+ |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | done | | | | |
| | | | | |---------|-----------►+-+ | | |
| | | | | | | | | | | |
| | | | | |◄--------|------------+-+ | | |
| | | | | | | | | | |
| | |◄----------------------|-----------------------+-+ | | | | |
| | | | | | | | | |
|______|_|_______________________|________________________|__________| | | | |
| | | | | | | |
+-+ | | | | | |
| | | | | | |