NAME¶
readfile - return the entire contents of a file as a string
SYNOPSIS¶
@load "readfile"
result = readfile("/some/path")
For making whole files be single records:
@load "readfile"
BEGIN { PROCINFO["readfile"] = 1 }
DESCRIPTION¶
The
readfile extension adds a single function named
readfile().
The argument is the name of the file to read. The return value is a string
containing the entire contents of the requested file.
Upon error, the function returns the empty string and sets
ERRNO.
In addition, it adds an input parser that is activated if
PROCINFO["readfile"] exists. When activated, each input file is
returned in its entirety as $0. RT is set to the null string.
EXAMPLE¶
@load "readfile"
...
contents = readfile("/path/to/file");
if (contents == "" && ERRNO != "") {
print("problem reading file", ERRNO) > "/dev/stderr"
...
}
SEE ALSO¶
GAWK: Effective AWK Programming,
filefuncs(3am),
fnmatch(3am),
fork(3am),
inplace(3am),
ordchr(3am),
readdir(3am),
revoutput(3am),
rwarray(3am),
time(3am).
AUTHOR¶
Arnold Robbins,
arnold@skeeve.com.
COPYING PERMISSIONS¶
Copyright © 2012, 2013, 2014, Free Software Foundation, Inc.
Permission is granted to make and distribute verbatim copies of this manual page
provided the copyright notice and this permission notice are preserved on all
copies.
Permission is granted to copy and distribute modified versions of this manual
page under the conditions for verbatim copying, provided that the entire
resulting derived work is distributed under the terms of a permission notice
identical to this one.
Permission is granted to copy and distribute translations of this manual page
into another language, under the above conditions for modified versions,
except that this permission notice may be stated in a translation approved by
the Foundation.