lua

commit ca412214cbbeb8f40e9abea534e6171044cc0a57
parent 801722825d94b3bddd94d83887b081c328772147
Author: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date:   Fri,  9 Feb 1996 17:02:10 -0200

new function "date", replaces old "date" and "time".

Diffstat:
M
iolib.c
 | 
58
++++++++++++++++++++++------------------------------------
M
manual.tex
 | 
20
++++++++++----------

2 files changed, 32 insertions(+), 46 deletions(-)
diff --git a/iolib.c b/iolib.c
@@ -3,7 +3,7 @@
 ** Input/output library to LUA
 */
 
-char *rcs_iolib="$Id: iolib.c,v 1.32 1996/01/29 16:40:09 roberto Exp roberto $";
+char *rcs_iolib="$Id: iolib.c,v 1.33 1996/02/05 21:32:19 roberto Exp roberto $";
 
 #include <stdio.h>
 #include <ctype.h>
@@ -12,6 +12,7 @@ char *rcs_iolib="$Id: iolib.c,v 1.32 1996/01/29 16:40:09 roberto Exp roberto $";
 #include <string.h>
 #include <time.h>
 #include <stdlib.h>
+#include <errno.h>
 
 #include "lua.h"
 #include "luadebug.h"
@@ -490,9 +491,14 @@ static void io_remove  (void)
    lua_pushnil();
 }
 
+static void io_errorno (void)
+{
+/*  lua_pushstring(strerror(errno));*/
+}
+
 
 /*
-** To get a environment variables
+** To get a environment variable
 */
 static void io_getenv (void)
 {
@@ -502,42 +508,23 @@ static void io_getenv (void)
 }
 
 /*
-** Return time: hour, min, sec
-*/
-static void io_time (void)
-{
- time_t t;
- struct tm *s;
- 
- time(&t);
- s = localtime(&t);
- lua_pushnumber(s->tm_hour);
- lua_pushnumber(s->tm_min);
- lua_pushnumber(s->tm_sec);
-}
- 
-/*
-** Return date: dd, mm, yyyy, weekday
+** Return user formatted time stamp
 */
 static void io_date (void)
 {
  time_t t;
- struct tm *s;
- 
- time(&t);
- s = localtime(&t);
- lua_pushnumber(s->tm_mday);
- lua_pushnumber(s->tm_mon+1);
- lua_pushnumber(s->tm_year+1900);
- lua_pushnumber(s->tm_wday+1);
-}
- 
-/*
-** Beep
-*/
-static void io_beep (void)
-{
- printf("\a");
+ struct tm *tm;
+ char *s;
+ char b[BUFSIZ];
+ if (lua_getparam(1) == LUA_NOOBJECT)
+  s = "%c";
+ else
+  s = lua_check_string(1, "date");
+ time(&t); tm = localtime(&t);
+ if (strftime(b,sizeof(b),s,tm))
+  lua_pushstring(b);
+ else
+  lua_error("`date' format too long");
 }
  
 /*
@@ -628,10 +615,9 @@ void iolib_open (void)
  lua_register ("write",    io_write);
  lua_register ("execute",  io_execute);
  lua_register ("remove",   io_remove);
+ lua_register ("ioerror",   io_errorno);
  lua_register ("getenv",   io_getenv);
- lua_register ("time",     io_time);
  lua_register ("date",     io_date);
- lua_register ("beep",     io_beep);
  lua_register ("exit",     io_exit);
  lua_register ("debug",    io_debug);
  lua_register ("print_stack", errorfb);
diff --git a/manual.tex b/manual.tex
@@ -1,4 +1,4 @@
-% $Id: manual.tex,v 1.7 1996/02/09 16:37:58 roberto Exp roberto $
+% $Id: manual.tex,v 1.8 1996/02/09 17:21:27 roberto Exp roberto $
 
 \documentstyle[A4,11pt,bnf]{article}
 
@@ -32,7 +32,7 @@ Waldemar Celes Filho
 Departamento de Inform\'atica --- PUC-Rio
 }
 
-\date{\small \verb$Date: 1996/02/09 16:37:58 $}
+\date{\small \verb$Date: 1996/02/09 17:21:27 $}
 
 \maketitle
 
@@ -1440,17 +1440,17 @@ and strings with \verb'%s'.
 For better format facilities,
 the function \verb'format' should be used (\see{format}).
 
-\subsubsection*{{\tt date ()}}\Deffunc{date}
+\subsubsection*{{\tt date ([format])}}\Deffunc{date}
 
-This function returns 4 values:
-the current day of the month,
-the month ([1-12]), the current year,
-and the day of the week (1 = Sunday, 7 = Saturday).
+This function returns a string containing date and time
+formatted according to the given string \verb'format',
+following the same rules of the ANSI C function \verb'strftime'.
+When called without arguments,
+it returns a reasonable date and time representation.
 
-\subsubsection*{{\tt time ()}}\Deffunc{time}
+This function replaces functions \verb'date' and \verb'time' from
+previous Lua versions.
 
-This function returns the current time through 3 values:
-hours ([0-23]), minutes, and seconds.
 
 % \subsubsection*{{\tt debug ()}}
 % This function, when called, repeatedly presents a prompt \verb'lua_debug> '