Initial revision

2 files changed, 332 insertions, 0 deletions

diff --git a/gdb/tui/tui-file.c b/gdb/tui/tui-file.c
new file mode 100644
index 00000000000..ae3f842e961
--- /dev/null
+++ b/gdb/tui/tui-file.c
@@ -0,0 +1,298 @@
+/* GDB_FILE - a generic STDIO like output stream.
+   Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include "defs.h"
+#include "gdb-file.h"
+#include "tui/tui-file.h"
+
+#include <string.h>
+
+/* Called instead of fputs for all TUI_FILE output.  */
+
+void (*fputs_unfiltered_hook) (const char *linebuffer, GDB_FILE * stream);
+
+/* A ``struct gdb_file'' that is compatible with all the legacy
+   code. */
+
+/* new */
+enum streamtype
+{
+  afile,
+  astring
+};
+
+/* new */
+struct tui_stream
+{
+  int *ts_magic;
+  enum streamtype ts_streamtype;
+  FILE *ts_filestream;
+  char *ts_strbuf;
+  int ts_buflen;
+};
+
+static gdb_file_flush_ftype tui_file_flush;
+extern gdb_file_fputs_ftype tui_file_fputs;
+static gdb_file_isatty_ftype tui_file_isatty;
+static gdb_file_rewind_ftype tui_file_rewind;
+static gdb_file_put_ftype tui_file_put;
+static gdb_file_delete_ftype tui_file_delete;
+static struct gdb_file *tui_file_new PARAMS ((void));
+static int tui_file_magic;
+
+static struct gdb_file *
+tui_file_new ()
+{
+  struct tui_stream *tui = xmalloc (sizeof (struct tui_stream));
+  struct gdb_file *file = gdb_file_new ();
+  set_gdb_file_data (file, tui, tui_file_delete);
+  set_gdb_file_flush (file, tui_file_flush);
+  set_gdb_file_fputs (file, tui_file_fputs);
+  set_gdb_file_isatty (file, tui_file_isatty);
+  set_gdb_file_rewind (file, tui_file_rewind);
+  set_gdb_file_put (file, tui_file_put);
+  tui->ts_magic = &tui_file_magic;
+  return file;
+}
+
+static void
+tui_file_delete (file)
+     struct gdb_file *file;
+{
+  struct tui_stream *tmpstream = gdb_file_data (file);
+  if (tmpstream->ts_magic != &tui_file_magic)
+    internal_error ("tui_file_delete: bad magic number");
+  if ((tmpstream->ts_streamtype == astring) &&
+      (tmpstream->ts_strbuf != NULL))
+    {
+      free (tmpstream->ts_strbuf);
+    }
+  free (tmpstream);
+}
+
+struct gdb_file *
+tui_fileopen (stream)
+     FILE *stream;
+{
+  struct gdb_file *file = tui_file_new ();
+  struct tui_stream *tmpstream = gdb_file_data (file);
+  tmpstream->ts_streamtype = afile;
+  tmpstream->ts_filestream = stream;
+  tmpstream->ts_strbuf = NULL;
+  tmpstream->ts_buflen = 0;
+  return file;
+}
+
+struct gdb_file *
+tui_sfileopen (n)
+     int n;
+{
+  struct gdb_file *file = tui_file_new ();
+  struct tui_stream *tmpstream = gdb_file_data (file);
+  tmpstream->ts_streamtype = astring;
+  tmpstream->ts_filestream = NULL;
+  if (n > 0)
+    {
+      tmpstream->ts_strbuf = xmalloc ((n + 1) * sizeof (char));
+      tmpstream->ts_strbuf[0] = '\0';
+    }
+  else
+    /* Do not allocate the buffer now.  The first time something is printed
+       one will be allocated by tui_file_adjust_strbuf()  */
+    tmpstream->ts_strbuf = NULL;
+  tmpstream->ts_buflen = n;
+  return file;
+}
+
+static int
+tui_file_isatty (file)
+     struct gdb_file *file;
+{
+  struct tui_stream *stream = gdb_file_data (file);
+  if (stream->ts_magic != &tui_file_magic)
+    internal_error ("tui_file_isatty: bad magic number");
+  if (stream->ts_streamtype == afile)
+    return (isatty (fileno (stream->ts_filestream)));
+  else
+    return 0;
+}
+
+static void
+tui_file_rewind (file)
+     struct gdb_file *file;
+{
+  struct tui_stream *stream = gdb_file_data (file);
+  if (stream->ts_magic != &tui_file_magic)
+    internal_error ("tui_file_rewind: bad magic number");
+  stream->ts_strbuf[0] = '\0';
+}
+
+static void
+tui_file_put (struct gdb_file *file,
+	      gdb_file_put_method_ftype *write,
+	      void *dest)
+{
+  struct tui_stream *stream = gdb_file_data (file);
+  if (stream->ts_magic != &tui_file_magic)
+    internal_error ("tui_file_put: bad magic number");
+  if (stream->ts_streamtype == astring)
+    write (dest, stream->ts_strbuf, strlen (stream->ts_strbuf));
+}
+
+/* All TUI I/O sent to the *_filtered and *_unfiltered functions
+   eventually ends up here.  The fputs_unfiltered_hook is primarily
+   used by GUIs to collect all output and send it to the GUI, instead
+   of the controlling terminal.  Only output to gdb_stdout and
+   gdb_stderr are sent to the hook.  Everything else is sent on to
+   fputs to allow file I/O to be handled appropriately.  */
+
+/* FIXME: Should be broken up and moved to a TUI specific file. */
+
+void
+tui_file_fputs (linebuffer, file)
+     const char *linebuffer;
+     GDB_FILE *file;
+{
+  struct tui_stream *stream = gdb_file_data (file);
+#if defined(TUI)
+  extern int tui_owns_terminal;
+#endif
+  /* NOTE: cagney/1999-10-13: The use of fputs_unfiltered_hook is
+     seriously discouraged.  Those wanting to hook output should
+     instead implement their own gdb_file object and install that. See
+     also tui_file_flush(). */
+  if (fputs_unfiltered_hook
+      && (file == gdb_stdout
+	  || file == gdb_stderr))
+    fputs_unfiltered_hook (linebuffer, file);
+  else
+    {
+#if defined(TUI)
+      if (tui_version && tui_owns_terminal)
+	{
+	  /* If we get here somehow while updating the TUI (from
+	   * within a tuiDo(), then we need to temporarily 
+	   * set up the terminal for GDB output. This probably just
+	   * happens on error output.
+	   */
+
+	  if (stream->ts_streamtype == astring)
+	    {
+	      tui_file_adjust_strbuf (strlen (linebuffer), stream);
+	      strcat (stream->ts_strbuf, linebuffer);
+	    }
+	  else
+	    {
+	      tuiTermUnsetup (0, (tui_version) ? cmdWin->detail.commandInfo.curch : 0);
+	      fputs (linebuffer, stream->ts_filestream);
+	      tuiTermSetup (0);
+	      if (linebuffer[strlen (linebuffer) - 1] == '\n')
+		tuiClearCommandCharCount ();
+	      else
+		tuiIncrCommandCharCountBy (strlen (linebuffer));
+	    }
+	}
+      else
+	{
+	  /* The normal case - just do a fputs() */
+	  if (stream->ts_streamtype == astring)
+	    {
+	      tui_file_adjust_strbuf (strlen (linebuffer), stream);
+	      strcat (stream->ts_strbuf, linebuffer);
+	    }
+	  else
+	    fputs (linebuffer, stream->ts_filestream);
+	}
+
+
+#else
+      if (stream->ts_streamtype == astring)
+	{
+	  tui_file_adjust_strbuf (strlen (linebuffer), file);
+	  strcat (stream->ts_strbuf, linebuffer);
+	}
+      else
+	fputs (linebuffer, stream->ts_filestream);
+#endif
+    }
+}
+
+char *
+tui_file_get_strbuf (struct gdb_file *file)
+{
+  struct tui_stream *stream = gdb_file_data (file);
+  if (stream->ts_magic != &tui_file_magic)
+    internal_error ("tui_file_get_strbuf: bad magic number");
+  return (stream->ts_strbuf);
+}
+
+/* adjust the length of the buffer by the amount necessary
+   to accomodate appending a string of length N to the buffer contents */
+void
+tui_file_adjust_strbuf (int n, struct gdb_file *file)
+{
+  struct tui_stream *stream = gdb_file_data (file);
+  int non_null_chars;
+  if (stream->ts_magic != &tui_file_magic)
+    internal_error ("tui_file_adjust_strbuf: bad magic number");
+
+  if (stream->ts_streamtype != astring)
+    return;
+
+  if (stream->ts_strbuf)
+    {
+      /* There is already a buffer allocated */
+      non_null_chars = strlen (stream->ts_strbuf);
+
+      if (n > (stream->ts_buflen - non_null_chars - 1))
+	{
+	  stream->ts_buflen = n + non_null_chars + 1;
+	  stream->ts_strbuf = xrealloc (stream->ts_strbuf, stream->ts_buflen);
+	}
+    }
+  else
+    /* No buffer yet, so allocate one of the desired size */
+    stream->ts_strbuf = xmalloc ((n + 1) * sizeof (char));
+}
+
+static void
+tui_file_flush (file)
+     GDB_FILE *file;
+{
+  struct tui_stream *stream = gdb_file_data (file);
+  if (stream->ts_magic != &tui_file_magic)
+    internal_error ("tui_file_flush: bad magic number");
+
+  /* NOTE: cagney/1999-10-12: If we've been linked with code that uses
+     fputs_unfiltered_hook then we assume that it doesn't need to know
+     about flushes.  Code that does need to know about flushes can
+     implement a proper gdb_file object. */
+  if (fputs_unfiltered_hook)
+    return;
+
+  switch (stream->ts_streamtype)
+    {
+    case astring:
+      break;
+    case afile:
+      fflush (stream->ts_filestream);
+      break;
+    }
+}
diff --git a/gdb/tui/tui-file.h b/gdb/tui/tui-file.h
new file mode 100644
index 00000000000..c962d4ff714
--- /dev/null
+++ b/gdb/tui/tui-file.h
@@ -0,0 +1,34 @@
+/* GDB_FILE - a generic STDIO like output stream.
+   Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef TUI_FILE_H
+#define TUI_FILE_H
+
+extern struct gdb_file *tui_fileopen (FILE *);
+extern struct gdb_file *tui_sfileopen (int);
+extern char *tui_file_get_strbuf (struct gdb_file *);
+extern void tui_file_adjust_strbuf (int, struct gdb_file *);
+
+/* NOTE: cagney/1999-10-14: fputs_unfiltered_hook is deprecated.  Code
+   wanting to control GDB's output should override the gdb_std...
+   files. */
+extern void (*fputs_unfiltered_hook) (const char *linebuffer,
+				      GDB_FILE * stream);
+#endif