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Full Discussion: A script need help
Top Forums Shell Programming and Scripting A script need help Post 303039420 by MadeInGermany on Friday 4th of October 2019 05:26:49 AM
Old 10-04-2019
Some awk versions have a problem with parsing a complicated FS.
The following variant takes a simple FS:
Code:
awk -v want="CITY,REGION,STREET" '
function prnsection() {
   if (length(section)) {
     printf "%s",section
# quick loop in random order:
#    for (i in keypos)
# keep the order:
     for (i=1;i in keypos;i++) {
       printf " %s", keys[keypos[i]]
       keys[keypos[i]]="MISSING"
     }
     printf "\n"
   }
}
BEGIN {
   FS="="
# split puts CITY,REGION,STREET to keypos[1,2,3]
# the loop creates keys[CITY,REGION,STREET]
   for (i=split(want, keypos, ",");i;i--) {
       keys[keypos[i]]="MISSING";
   }
}
/^\[/ { prnsection(); section=$0 }
($1 in keys) { keys[$1]=$0 }
END { prnsection() }' infile

These 3 Users Gave Thanks to MadeInGermany For This Post:
green_k Neo wisecracker
 

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LEARN ABOUT MOJAVE

ini

inifile(n)						   Parsing of Windows INI files 						inifile(n)

__________________________________________________________________________________________________________________________________________________

NAME

       inifile - Parsing of Windows INI files

SYNOPSIS

       package require Tcl  8.2

       package require inifile	?0.2.3?

       ::ini::open file ?access?

       ::ini::close ini

       ::ini::commit ini

       ::ini::revert ini

       ::ini::filename ini

       ::ini::sections ini

       ::ini::keys ini section

       ::ini::get ini section

       ::ini::exists ini section ?key?

       ::ini::value ini section key ?default?

       ::ini::set ini section key value

       ::ini::delete ini section ?key?

       ::ini::comment ini section ?key? ?text?

       ::ini::commentchar ?char?

_________________________________________________________________

DESCRIPTION

       This package provides an interface for easy manipulation of Windows INI files.

       ::ini::open file ?access?
	      Opens an INI file and returns a handle that is used by other commands.  access is the same as the first form (non POSIX) of the open
	      command, with the exception that mode a is not supported. The default mode is r+.

       ::ini::close ini
	      Close the specified handle. If any changes were made and not written by commit they are lost.

       ::ini::commit ini
	      Writes the file and all changes to disk. The sections are written in arbitrary order. The keys in a section are written in alphabet-
	      ical order. If the ini was opened in read only mode an error will be thrown.

       ::ini::revert ini
	      Rolls all changes made to the inifile object back to the last committed state.

       ::ini::filename ini
	      Returns the name of the file the ini object is associated with.

       ::ini::sections ini
	      Returns a list of all the names of the existing sections in the file handle specified.

       ::ini::keys ini section
	      Returns a list of all they key names in the section and file specified.

       ::ini::get ini section
	      Returns a list of key value pairs that exist in the section and file specified.

       ::ini::exists ini section ?key?
	      Returns a boolean value indicating the existance of the specified section as a whole or the specified key within that section.

       ::ini::value ini section key ?default?
	      Returns  the  value of the named key and section. If specified, the default value will be returned if the key does not exist. If the
	      key does not exist and no default is specified an error will be thrown.

       ::ini::set ini section key value
	      Sets the value of the key in the specified section. If the section does not exist then a new one is created.

       ::ini::delete ini section ?key?
	      Removes the key or the entire section and all its keys. A section is not automatically deleted when it has no remaining keys.

       ::ini::comment ini section ?key? ?text?
	      Reads and modifies comments for sections and keys. To write a section comment use an empty string for the key. To  remove  all  com-
	      ments use an empty string for text.  text may consist of a list of lines or one single line. Any embedded newlines in text are prop-
	      erly handled.  Comments may be written to nonexistant sections or keys and will not return an error. Reading a comment from a nonex-
	      istant section or key will return an empty string.

       ::ini::commentchar ?char?
	      Reads  and  sets	the comment character. Lines that begin with this character are treated as comments. When comments are written out
	      each line is preceded by this character. The default is ;.

BUGS, IDEAS, FEEDBACK
       This document, and the package it describes, will undoubtedly contain bugs and other problems.  Please report such in the category  inifile
       of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883].  Please also report any ideas for enhancements you may have for
       either package and/or documentation.

CATEGORY

       Text processing

inifile 							       0.2.3								inifile(n)
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