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* Revamp documentation for Cygwin 1.7, part 1.

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Corinna Vinschen
2008-07-17 11:49:45 +00:00
parent b2dab9e8bc
commit 85f1119b7b
16 changed files with 908 additions and 746 deletions
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winsup/doc/textbinary.sgml
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@@ -1,6 +1,6 @@
<sect1 id="using-textbinary"><title>Text and Binary modes</title>
<sect2> <title>The Issue</title>
<sect2 id="textbin-issue"> <title>The Issue</title>
<para>On a UNIX system, when an application reads from a file it gets
exactly what's in the file on disk and the converse is true for writing.
@@ -28,7 +28,7 @@ other programs (such as <command>cat</command>, <command>cmp</command>,
</sect2>
<sect2><title>The default Cygwin behavior</title>
<sect2 id="textbin-default"><title>The default Cygwin behavior</title>
<para>The Cygwin system gives us some flexibility in deciding how files
are to be opened when the mode is not specified explicitly.
@@ -49,22 +49,8 @@ backslash or a colon), the default is binary.
<listitem>
<para>Pipes and non-file devices are opened in binary mode,
except if the <envar>CYGWIN</envar> environment variable contains
<literal>nobinmode</literal>.</para>
<warning><title>Warning!</title><para>In b20.1 of 12/98, a file will be opened
in binary mode if any of the following conditions hold:</para>
<orderedlist numeration="arabic" spacing="compact">
<listitem><para>binary mode is specified in the open call</para>
</listitem>
<listitem><para>the filename is a MS-DOS filename</para>
</listitem>
<listitem><para>the file resides on a binary mounted partition</para>
</listitem>
<listitem><para><envar>CYGWIN</envar> contains <literal>binmode</literal></para>
</listitem>
<listitem><para>the file is not a disk file</para>
</listitem>
</orderedlist>
</warning>
<literal>nobinmode</literal>. Sockets are always opened in binary
mode.</para>
</listitem>
<listitem>
@@ -79,7 +65,7 @@ and <command> program &lt; filename </command> are not equivalent when
</orderedlist>
</sect2>
<sect2><title>Example</title>
<sect2 id="textbin-example"><title>Example</title>
<para>To illustrate the various rules, we provide scripts to delete CRs
from files by using the <command>tr</command> program, which can only write
to standard output.
@@ -115,7 +101,7 @@ In the second case we rely on the DOS shell to redirect in binary mode.
</para>
</sect2>
<sect2><title>Binary or text?</title>
<sect2 id="textbin-question"><title>Binary or text?</title>
<para>UNIX programs that have been written for maximum portability
will know the difference between text and binary files and act
@@ -150,7 +136,7 @@ in binary mode.</para>
</sect2>
<sect2><title>Programming</title>
<sect2 id="textbin-devel"><title>Programming</title>
<para>In the <function>open()</function> function call, binary mode can be
specified with the flag <literal>O_BINARY</literal> and text mode with