From 1f5d222e3f2243f335e7c45f4c1a2529297ddb6c Mon Sep 17 00:00:00 2001
From: Adam Dickmeiss <adam@indexdata.dk>
Date: Tue, 20 Aug 1996 09:33:23 +0000
Subject: [PATCH] Tcl7.5 Generic file handling.

---
 Makefile.in |    4 +-
 select.c    |  138 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 140 insertions(+), 2 deletions(-)
 create mode 100644 select.c

diff --git a/Makefile.in b/Makefile.in
index 76960de..05b4698 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -2,7 +2,7 @@
 # (c) Index Data 1995-1996
 # See the file LICENSE for details.
 # Sebastian Hammer, Adam Dickmeiss
-# $Id: Makefile.in,v 1.40 1996-08-20 09:27:48 adam Exp $
+# $Id: Makefile.in,v 1.41 1996-08-20 09:33:23 adam Exp $
 SHELL=/bin/sh
 
 # IrTcl Version
@@ -53,7 +53,7 @@ INSTALL_PROGRAM = @INSTALL_PROGRAM@
 INSTALL_DATA = @INSTALL_DATA@
 RANLIB = @RANLIB@
 
-O=ir-tcl.o marc.o queue.o mem.o grs.o explain.o events.o
+O=ir-tcl.o marc.o queue.o mem.o grs.o explain.o select.o
 
 all: ir-tcl ir-tk
 
diff --git a/select.c b/select.c
new file mode 100644
index 0000000..93f2012
--- /dev/null
+++ b/select.c
@@ -0,0 +1,138 @@
+/*
+ * IR toolkit for tcl/tk
+ * (c) Index Data 1996
+ * See the file LICENSE for details.
+ * Sebastian Hammer, Adam Dickmeiss
+ *
+ * $Log: select.c,v $
+ * Revision 1.1  1996-08-20 09:33:23  adam
+ * Tcl7.5 Generic file handling.
+ *
+ */
+
+#include <tcl.h>
+#include <log.h>
+#include "ir-tcl.h"
+
+#if TCL_MAJOR_VERSION > 7 || (TCL_MAJOR_VERSION == 7 && TCL_MINOR_VERSION > 4)
+
+#define IRTCL_USE_TIMER 0
+
+struct sel_proc {
+    void (*f)(ClientData clientData, int r, int w, int e);
+    ClientData clientData;
+    int fd;
+#if IRTCL_USE_TIMER
+    int mask;
+    Tcl_TimerToken timer_token;
+#else
+    Tcl_File tcl_File;
+#endif
+    struct sel_proc *next;
+};
+
+static struct sel_proc *sel_proc_list = NULL;
+
+#if IRTCL_USE_TIMER
+static void ir_tcl_timer_proc (ClientData clientData)
+{
+    struct sel_proc *sp = (struct sel_proc *) clientData;
+
+    if (!sp->f)
+        return ;
+    sp->timer_token =
+        Tcl_CreateTimerHandler (250, ir_tcl_timer_proc, clientData);
+    (*sp->f)(sp->clientData, sp->mask & TCL_READABLE, sp->mask & TCL_WRITABLE,
+             sp->mask & TCL_EXCEPTION);
+    
+}
+
+void ir_tcl_select_set (void (*f)(ClientData clientData, int r, int w, int e),
+                        int fd, ClientData clientData, int r, int w, int e)
+{
+    int mask = 0;
+    struct sel_proc **sp = &sel_proc_list;
+
+    if (r)
+        mask |= TCL_READABLE;
+    if (w)
+        mask |= TCL_WRITABLE;
+    if (e)
+        mask |= TCL_EXCEPTION;
+    while (*sp)
+    {
+        if ((*sp)->fd == fd)
+            break;
+        sp = &(*sp)->next;
+    }
+    if (!*sp)
+    {
+        *sp = ir_tcl_malloc (sizeof(**sp));
+        (*sp)->next = NULL;
+        (*sp)->fd = fd;
+        (*sp)->timer_token =
+            Tcl_CreateTimerHandler (250, ir_tcl_timer_proc, *sp);
+    }
+    (*sp)->mask = TCL_READABLE|TCL_WRITABLE;
+    (*sp)->f = f;
+    (*sp)->clientData = clientData;
+    if (!f)
+    {
+        struct sel_proc *sp_tmp = *sp;
+        Tcl_DeleteTimerHandler ((*sp)->timer_token);
+        *sp = (*sp)->next;
+        xfree (sp_tmp);
+    }
+}
+
+#else
+static void ir_tcl_tk_select_proc (ClientData clientData, int mask)
+{
+    struct sel_proc *sp = (struct sel_proc *) clientData;
+
+    if (!sp->f)
+        return ;
+    (*sp->f)(sp->clientData, mask & TCL_READABLE, mask & TCL_WRITABLE,
+             mask & TCL_EXCEPTION);
+}
+
+void ir_tcl_select_set (void (*f)(ClientData clientData, int r, int w, int e),
+                        int fd, ClientData clientData, int r, int w, int e)
+{
+    int mask = 0;
+    struct sel_proc *sp = sel_proc_list;
+
+    if (r)
+        mask |= TCL_READABLE;
+    if (w)
+        mask |= TCL_WRITABLE;
+    if (e)
+        mask |= TCL_EXCEPTION;
+    while (sp)
+    {
+        if (sp->fd == fd)
+             break;
+        sp = sp->next;
+    }
+    if (!sp)
+    {
+        sp = ir_tcl_malloc (sizeof(*sp));
+        sp->next = sel_proc_list;
+        sel_proc_list = sp;
+        sp->fd = fd;
+#if WINDOWS
+        sp->tcl_File = Tcl_GetFile ((ClientData) fd, TCL_WIN_SOCKET);
+#else
+        sp->tcl_File = Tcl_GetFile ((ClientData) fd, TCL_UNIX_FD);
+#endif
+    }
+    sp->f = f;
+    sp->clientData = clientData;
+    if (f)
+        Tcl_CreateFileHandler (sp->tcl_File, mask, ir_tcl_tk_select_proc, sp);
+    else
+        Tcl_DeleteFileHandler (sp->tcl_File);
+}
+#endif
+
+#endif
-- 
1.7.10.4