10-16-2018
Quote:
Originally Posted by
Don Cragun
Neither awk nor sed have defined behavior according to the standards if the file being processed is not a text file. If an input file contains any characters and the last character in the file is not a <newline> character, that input file is not a text file. (So the code Scrutinizer suggested also depends on GNU extensions to awk that are not portable and not required by the standards.)
[..]
Hi Don, I see where you are going, I may have read the question wrong, I interpreted it as "add a carriage return is it is missing at the end of a line (which ends in linefeed)". So for that, my suggestion does not use extensions - GNU or otherwise - to the standard. I did not mean to also correct a missing newline at the end of the file.
It may be good to note that even though the latter case is not defined by the standards, every implementation of
awk on every OS I know does read the unterminated last line and adds the newline at the end of the file, so IMO this behavior cannot be labeled as a GNU extension.
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LEARN ABOUT OPENSOLARIS
igawk
IGAWK(1) Utility Commands IGAWK(1)
NAME
igawk - gawk with include files
SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ...
igawk [ all gawk options ] [ -- ] program-text file ...
DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).
AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like
@include getopt.awk
in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.
OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports.
EXAMPLES
cat << EOF > test.awk
@include getopt.awk
BEGIN {
while (getopt(ARGC, ARGV, "am:q") != -1)
...
}
EOF
igawk -f test.awk
SEE ALSO
gawk(1)
Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.
AUTHOR
Arnold Robbins (arnold@skeeve.com).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWgawk |
+--------------------+-----------------+
|Interface Stability | Volatile |
+--------------------+-----------------+
NOTES
Source for gawk is available on http://opensolaris.org.
Free Software Foundation Nov 3 1999 IGAWK(1)