/var/spool/hylafax/bin/qp-encode.awk is in hylafax-server 3:6.0.6-5.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 | #!/usr/bin/awk -f
# $Id$
#
# HylaFAX Facsimile Software
#
# Copyright 2006 Patrice Fournier
# Copyright 2006 iFAX Solutions Inc.
#
# Permission to use, copy, modify, distribute, and sell this software and
# its documentation for any purpose is hereby granted without fee, provided
# that (i) the above copyright notices and this permission notice appear in
# all copies of the software and related documentation, and (ii) the names of
# Sam Leffler and Silicon Graphics may not be used in any advertising or
# publicity relating to the software without the specific, prior written
# permission of Sam Leffler and Silicon Graphics.
#
# THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
# EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
# WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
#
# IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
# ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
# OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
# LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
function private_rshift(x,n)
{
while (n > 0)
{
x =int(x/2);
n--;
};
return x;
}
function qp_lc(c)
{
# No special last character handling in Q mode.
if (ENCODING == "Q")
return _qp[c];
# In QP mode, space (32) and tab (9) must be encoded at the end of line.
if (c == " ")
return "=20";
else if (c == "\t")
return "=09";
else
return _qp[c];
}
function qp(c)
{
return _qp[c];
}
BEGIN {
FS = "\n";
if (ENCODING == "")
ENCODING = "QUOTED-PRINTABLE";
if (POSITION == "")
POSITION = "TEXT";
if (CHARSET == "")
CHARSET = "UTF-8";
if (WIDTH == 0)
{
if (ENCODING == "Q")
WIDTH = 75 - 7 - length(CHARSET);
else
WIDTH = 75;
}
if (ENCODING != "Q")
POSITION = "";
# In QP mode, space (32) and tab (9) are only encoded at the end of line.
for (i = 0; i < 256; i++) {
c = sprintf("%c", i);
if (POSITION == "phrase" && (i == 33 || i == 42 || i == 43 || i == 45 || (i >= 47 && i <= 57) || (i >= 65 && i <= 90) || i == 95 || (i >= 97 && i <= 122)))
_qp[c] = c;
else if (POSITION != "phrase" && (i == 9 || (i >= 32 && i <= 60) || (i >= 62 && i <= 126)))
_qp[c] = c;
else
_qp[c] = sprintf("=%02X", i);
}
# Fixup the encoding for some of the Q encoding characters.
if (ENCODING == "Q")
{
_qp[" "] = "_";
_qp["\t"] = "=09";
_qp["?"] = "=3F";
_qp["_"] = "=5F";
if (POSITION == "comment")
{
_qp["("] = "=28";
_qp[")"] = "=29";
_qp["\""] = "=22";
}
}
}
{
l=0;
out="";
len=length();
if (len > 0)
{
for (i=1; i<len; i++)
out = out qp(substr($0, i, 1));
out = out qp_lc(substr($0, len, 1));
# Quoted-Printable lines must be no more than 76 characters
# (including soft break)
while (length(out) > WIDTH)
{
end = WIDTH;
while (substr(out, end, 1) == "=" || substr(out, end-1, 1) == "=")
end--;
if (ENCODING == "Q" && CHARSET == "UTF-8")
while (length(out) > 2 && substr(out, end-2, 1) == "=" && private_rshift(substr(out, end-1, 2), 6) == 2)
end -= 3;
if (ENCODING == "Q")
print "=?" CHARSET "?Q?" substr(out, 1, end) "?=";
else
print substr(out, 1, end) "=";
out = substr(out, end+1);
}
}
if (ENCODING == "Q")
print "=?" CHARSET "?Q?" out "?=";
else
print out;
}
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