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NULL character support

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hooper114 2009-01-02 21:09:16 +00:00
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docs/frontend.html
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@ -42,7 +42,8 @@ describes how to encode data using the command line front end
program.</P>
<P><BR><BR>
</P>
<H1><A NAME="INPUT"></A><FONT SIZE=5><B>3.1 Inputting data</B></FONT></H1>
<P><A NAME="INPUT"></A><FONT SIZE=5><B>3.1 Inputting data</B></FONT>
</P>
<P STYLE="font-style: normal">The data to encode can be entered at
the command line using the -d option, for example:</P>
<P STYLE="font-style: normal"><FONT FACE="Courier, monospace"><FONT SIZE=2>zint
@ -64,6 +65,9 @@ here.png. If an encapsulated Post Script file is needed simply append
the file name with .eps:</P>
<P STYLE="font-style: normal"><FONT FACE="Courier, monospace"><FONT SIZE=2>zint
-o there.eps -d 'This Text'</FONT></FONT></P>
<P>Output can also be directed to stdout using the --<FONT FACE="Courier, monospace">directeps</FONT>
and --<FONT FACE="Courier, monospace">directpng</FONT> switches for
EPS and PNG output respectively.</P>
<P><BR><BR>
</P>
<P STYLE="font-style: normal"><A NAME="BARTYPE"></A><FONT SIZE=5><B>3.3
@ -449,6 +453,14 @@ appropriate integer value in the following table.</P>
<P ALIGN=CENTER>NVE-18</P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=139>
<P ALIGN=CENTER>77</P>
</TD>
<TD WIDTH=643>
<P ALIGN=CENTER>Korea Post</P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=139>
<P ALIGN=CENTER>79</P>
@ -758,27 +770,23 @@ is only available with PNG output.</FONT></P>
<COL WIDTH=480>
<TR VALIGN=TOP>
<TD WIDTH=501>
<P ALIGN=CENTER><IMG SRC="bar38n.png" NAME="graphics5" ALIGN=BOTTOM WIDTH=200 HEIGHT=118 BORDER=0><BR><BR><BR>
</P>
<P ALIGN=CENTER><FONT SIZE=3><FONT FACE="Courier, monospace">--rotate=0</FONT>
<P ALIGN=CENTER><IMG SRC="bar38n.png" NAME="graphics5" ALIGN=BOTTOM WIDTH=200 HEIGHT=118 BORDER=0>
<BR><FONT FACE="Courier, monospace"><FONT SIZE=3>--rotate=0</FONT></FONT><FONT SIZE=3>
(default)</FONT></P>
</TD>
<TD WIDTH=480>
<P ALIGN=CENTER><IMG SRC="bar38u.png" NAME="graphics6" ALIGN=BOTTOM WIDTH=200 HEIGHT=118 BORDER=0><BR><BR><BR>
</P>
<P ALIGN=CENTER><FONT FACE="Courier, monospace"><FONT SIZE=3>--rotate=180</FONT></FONT></P>
<P ALIGN=CENTER><IMG SRC="bar38u.png" NAME="graphics6" ALIGN=BOTTOM WIDTH=200 HEIGHT=118 BORDER=0>
<BR><FONT FACE="Courier, monospace"><FONT SIZE=3>--rotate=180</FONT></FONT></P>
</TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=501>
<P ALIGN=CENTER><IMG SRC="bar38l.png" NAME="graphics7" ALIGN=BOTTOM WIDTH=118 HEIGHT=200 BORDER=0><BR><BR><BR>
</P>
<P ALIGN=CENTER><FONT FACE="Courier, monospace"><FONT SIZE=3>--rotate=270</FONT></FONT></P>
<P ALIGN=CENTER><IMG SRC="bar38l.png" NAME="graphics7" ALIGN=BOTTOM WIDTH=118 HEIGHT=200 BORDER=0>
<BR><FONT FACE="Courier, monospace"><FONT SIZE=3>--rotate=270</FONT></FONT></P>
</TD>
<TD WIDTH=480>
<P ALIGN=CENTER><IMG SRC="bar38r.png" NAME="graphics8" ALIGN=BOTTOM WIDTH=118 HEIGHT=200 BORDER=0><BR><BR><BR>
</P>
<P ALIGN=CENTER><FONT FACE="Courier, monospace"><FONT SIZE=3>--rotate=90</FONT></FONT></P>
<P ALIGN=CENTER><IMG SRC="bar38r.png" NAME="graphics8" ALIGN=BOTTOM WIDTH=118 HEIGHT=200 BORDER=0>
<BR><FONT FACE="Courier, monospace"><FONT SIZE=3>--rotate=90</FONT></FONT></P>
</TD>
</TR>
</TABLE>
@ -787,9 +795,29 @@ is only available with PNG output.</FONT></P>
</DL>
<P><BR><BR>
</P>
<P><BR><BR>
<P STYLE="font-style: normal"><A NAME="SCALE"></A><FONT SIZE=5><B>3.9
Adjusting image size</B></FONT></P>
<P STYLE="font-style: normal">The scale of the image can be altered
using the <FONT FACE="Courier, monospace">--scale=</FONT> option
followed by a multiple of the default x-dimension. For example for
PNG images a scale of 5 will increase the x-dimension to 10 pixels.
Note that Maxicode symbols output as PNG images cannot be scaled in
this way and that text added to a barcode in PNG images does not
change size.
</P>
<P STYLE="font-style: normal"><A NAME="OTHER"></A><FONT SIZE=5><B>3.9
<P STYLE="font-style: normal"><A NAME="NULL"></A><FONT SIZE=5><B>3.10
Handling NULL Characters</B></FONT></P>
<P STYLE="font-style: normal">Some symbologies support encoding of
the NULL character (ASCII 0) normally used to indicate the end of a
character string. To support this functionality the <FONT FACE="Courier, monospace">--null=</FONT>
option allows you to substitute another character for NULL. Enter the
decimal number for the character you wish to substitute. For example
<FONT FACE="Courier, monospace">--null=21</FONT> instructs Zint to
treat the NAK control character as a NULL character. Values between 1
and 128 are valid. This currently applies to Codablock-F, Code 128,
Code 16k, Extended Code 39, Code 93, Maxicode, PDF417, MicroPDF417
and Telepen.</P>
<P STYLE="font-style: normal"><A NAME="OTHER"></A><FONT SIZE=5><B>3.11
Other options</B></FONT></P>
<P STYLE="font-style: normal">Additional options are available which
are specific to certain symbologies. These may, for example, control