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new option "mode" in "readfrom", "writeto" and "appendto" (for

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binary files).
This commit is contained in:
Roberto Ierusalimschy
1998-11-20 13:41:43 -02:00
parent 758e330d6e
commit e4830ddce3
2 changed files with 25 additions and 9 deletions
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manual.tex
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@@ -1,4 +1,4 @@
% $Id: manual.tex,v 1.19 1998/08/24 20:14:56 roberto Exp roberto $
% $Id: manual.tex,v 1.20 1998/11/13 16:48:48 roberto Exp roberto $
\documentclass[11pt]{article}
\usepackage{fullpage,bnf}
@@ -41,7 +41,7 @@ Waldemar Celes
\tecgraf\ --- Computer Science Department --- PUC-Rio
}
%\date{\small \verb$Date: 1998/08/24 20:14:56 $}
%\date{\small \verb$Date: 1998/11/13 16:48:48 $}
\maketitle
@@ -2615,12 +2615,14 @@ Unless otherwise stated,
all I/O functions return \nil\ on failure and
some value different from \nil\ on success.
\subsubsection*{\ff \T{readfrom (filename)}}\Deffunc{readfrom}
\subsubsection*{\ff \T{readfrom (filename [, mode])}}\Deffunc{readfrom}
This function may be called in two ways.
When called with a file name, it opens the named file,
sets its handle as the value of \verb|_INPUT|,
and returns this value.
An optional \verb|mode| argument with the string \verb|"binary"|
opens file in binary mode (where this applies).
It does not close the current input file.
When called without parameters,
it closes the \verb|_INPUT| file,
@@ -2639,13 +2641,15 @@ the number of files that can be open at the same time is
usually limited and depends on the system.
\end{quotation}
\subsubsection*{\ff \T{writeto (filename)}}\Deffunc{writeto}
\subsubsection*{\ff \T{writeto (filename [, mode])}}\Deffunc{writeto}
This function may be called in two ways.
When called with a file name,
it opens the named file,
sets its handle as the value of \verb|_OUTPUT|,
and returns this value.
An optional \verb|mode| argument with the string \verb|"binary"|
opens file in binary mode (where this applies).
It does not close the current output file.
Note that, if the file already exists,
then it will be \emph{completely erased} with this operation.
@@ -2667,10 +2671,12 @@ the number of files that can be open at the same time is
usually limited and depends on the system.
\end{quotation}
\subsubsection*{\ff \T{appendto (filename)}}\Deffunc{appendto}
\subsubsection*{\ff \T{appendto (filename [, mode])}}\Deffunc{appendto}
Opens a file named \verb|filename| and sets it as the
value of \verb|_OUTPUT|.
An optional \verb|mode| argument with the string \verb|"binary"|
opens file in binary mode (where this applies).
Unlike the \verb|writeto| operation,
this function does not erase any previous content of the file.
If this function fails, it returns \nil,