octave: libinterp/corefcn/pager.cc comparison

comparison libinterp/corefcn/pager.cc @ 31607:aac27ad79be6 stable

maint: Re-indent code after switch to using namespace macros. * build-env.h, build-env.in.cc, Cell.h, __betainc__.cc, __eigs__.cc, __ftp__.cc, __ichol__.cc, __ilu__.cc, __isprimelarge__.cc, __magick_read__.cc, __pchip_deriv__.cc, amd.cc, base-text-renderer.cc, base-text-renderer.h, besselj.cc, bitfcns.cc, bsxfun.cc, c-file-ptr-stream.h, call-stack.cc, call-stack.h, ccolamd.cc, cellfun.cc, chol.cc, colamd.cc, dasrt.cc, data.cc, debug.cc, defaults.cc, defaults.h, det.cc, display.cc, display.h, dlmread.cc, dynamic-ld.cc, dynamic-ld.h, ellipj.cc, environment.cc, environment.h, error.cc, error.h, errwarn.h, event-manager.cc, event-manager.h, event-queue.cc, event-queue.h, fcn-info.cc, fcn-info.h, fft.cc, fft2.cc, file-io.cc, filter.cc, find.cc, ft-text-renderer.cc, ft-text-renderer.h, gcd.cc, gl-render.cc, gl-render.h, gl2ps-print.cc, gl2ps-print.h, graphics-toolkit.cc, graphics-toolkit.h, graphics.cc, gsvd.cc, gtk-manager.cc, gtk-manager.h, help.cc, help.h, hook-fcn.cc, hook-fcn.h, input.cc, input.h, interpreter-private.cc, interpreter-private.h, interpreter.cc, interpreter.h, inv.cc, jsondecode.cc, jsonencode.cc, latex-text-renderer.cc, latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h, lookup.cc, ls-hdf5.cc, ls-mat4.cc, ls-mat5.cc, lsode.cc, lu.cc, mappers.cc, matrix_type.cc, max.cc, mex.cc, mexproto.h, mxarray.h, mxtypes.in.h, oct-errno.in.cc, oct-hdf5-types.cc, oct-hist.cc, oct-hist.h, oct-map.cc, oct-map.h, oct-opengl.h, oct-prcstrm.h, oct-process.cc, oct-process.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.h, octave-default-image.h, ordqz.cc, ordschur.cc, pager.cc, pager.h, pinv.cc, pow2.cc, pr-output.cc, psi.cc, qr.cc, quadcc.cc, rand.cc, regexp.cc, settings.cc, settings.h, sighandlers.cc, sighandlers.h, sparse-xpow.cc, sqrtm.cc, stack-frame.cc, stack-frame.h, stream-euler.cc, strfns.cc, svd.cc, syminfo.cc, syminfo.h, symrcm.cc, symrec.cc, symrec.h, symscope.cc, symscope.h, symtab.cc, symtab.h, sysdep.cc, sysdep.h, text-engine.cc, text-engine.h, text-renderer.cc, text-renderer.h, time.cc, toplev.cc, typecast.cc, url-handle-manager.cc, url-handle-manager.h, urlwrite.cc, utils.cc, utils.h, variables.cc, variables.h, xdiv.cc, __delaunayn__.cc, __init_fltk__.cc, __init_gnuplot__.cc, __ode15__.cc, __voronoi__.cc, audioread.cc, convhulln.cc, gzip.cc, cdef-class.cc, cdef-class.h, cdef-fwd.h, cdef-manager.cc, cdef-manager.h, cdef-method.cc, cdef-method.h, cdef-object.cc, cdef-object.h, cdef-package.cc, cdef-package.h, cdef-property.cc, cdef-property.h, cdef-utils.cc, cdef-utils.h, ov-base-diag.cc, ov-base-int.cc, ov-base-mat.cc, ov-base-mat.h, ov-base-scalar.cc, ov-base.cc, ov-base.h, ov-bool-mat.cc, ov-bool-mat.h, ov-bool-sparse.cc, ov-bool.cc, ov-builtin.h, ov-cell.cc, ov-ch-mat.cc, ov-class.cc, ov-class.h, ov-classdef.cc, ov-classdef.h, ov-complex.cc, ov-cx-diag.cc, ov-cx-mat.cc, ov-cx-sparse.cc, ov-dld-fcn.cc, ov-dld-fcn.h, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.h, ov-float.cc, ov-flt-complex.cc, ov-flt-cx-diag.cc, ov-flt-cx-mat.cc, ov-flt-re-diag.cc, ov-flt-re-mat.cc, ov-flt-re-mat.h, ov-intx.h, ov-java.cc, ov-lazy-idx.cc, ov-legacy-range.cc, ov-magic-int.cc, ov-mex-fcn.cc, ov-mex-fcn.h, ov-null-mat.cc, ov-perm.cc, ov-range.cc, ov-re-diag.cc, ov-re-mat.cc, ov-re-mat.h, ov-re-sparse.cc, ov-scalar.cc, ov-str-mat.cc, ov-struct.cc, ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc, ov.h, ovl.h, octave.cc, octave.h, op-b-sbm.cc, op-bm-sbm.cc, op-cs-scm.cc, op-fm-fcm.cc, op-fs-fcm.cc, op-s-scm.cc, op-scm-cs.cc, op-scm-s.cc, op-sm-cs.cc, ops.h, anon-fcn-validator.cc, anon-fcn-validator.h, bp-table.cc, bp-table.h, comment-list.cc, comment-list.h, filepos.h, lex.h, oct-lvalue.cc, oct-lvalue.h, parse.h, profiler.cc, profiler.h, pt-anon-scopes.cc, pt-anon-scopes.h, pt-arg-list.cc, pt-arg-list.h, pt-args-block.cc, pt-args-block.h, pt-array-list.cc, pt-array-list.h, pt-assign.cc, pt-assign.h, pt-binop.cc, pt-binop.h, pt-bp.cc, pt-bp.h, pt-cbinop.cc, pt-cbinop.h, pt-cell.cc, pt-cell.h, pt-check.cc, pt-check.h, pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.cc, pt-colon.h, pt-const.cc, pt-const.h, pt-decl.cc, pt-decl.h, pt-eval.cc, pt-eval.h, pt-except.cc, pt-except.h, pt-exp.cc, pt-exp.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.cc, pt-id.h, pt-idx.cc, pt-idx.h, pt-jump.h, pt-loop.cc, pt-loop.h, pt-mat.cc, pt-mat.h, pt-misc.cc, pt-misc.h, pt-pr-code.cc, pt-pr-code.h, pt-select.cc, pt-select.h, pt-spmd.cc, pt-spmd.h, pt-stmt.cc, pt-stmt.h, pt-tm-const.cc, pt-tm-const.h, pt-unop.cc, pt-unop.h, pt-walk.cc, pt-walk.h, pt.cc, pt.h, token.cc, token.h, Range.cc, Range.h, idx-vector.cc, idx-vector.h, range-fwd.h, CollocWt.cc, CollocWt.h, aepbalance.cc, aepbalance.h, chol.cc, chol.h, gepbalance.cc, gepbalance.h, gsvd.cc, gsvd.h, hess.cc, hess.h, lo-mappers.cc, lo-mappers.h, lo-specfun.cc, lo-specfun.h, lu.cc, lu.h, oct-convn.cc, oct-convn.h, oct-fftw.cc, oct-fftw.h, oct-norm.cc, oct-norm.h, oct-rand.cc, oct-rand.h, oct-spparms.cc, oct-spparms.h, qr.cc, qr.h, qrp.cc, qrp.h, randgamma.cc, randgamma.h, randmtzig.cc, randmtzig.h, randpoisson.cc, randpoisson.h, schur.cc, schur.h, sparse-chol.cc, sparse-chol.h, sparse-lu.cc, sparse-lu.h, sparse-qr.cc, sparse-qr.h, svd.cc, svd.h, child-list.cc, child-list.h, dir-ops.cc, dir-ops.h, file-ops.cc, file-ops.h, file-stat.cc, file-stat.h, lo-sysdep.cc, lo-sysdep.h, lo-sysinfo.cc, lo-sysinfo.h, mach-info.cc, mach-info.h, oct-env.cc, oct-env.h, oct-group.cc, oct-group.h, oct-password.cc, oct-password.h, oct-syscalls.cc, oct-syscalls.h, oct-time.cc, oct-time.h, oct-uname.cc, oct-uname.h, action-container.cc, action-container.h, base-list.h, cmd-edit.cc, cmd-edit.h, cmd-hist.cc, cmd-hist.h, f77-fcn.h, file-info.cc, file-info.h, lo-array-errwarn.cc, lo-array-errwarn.h, lo-hash.cc, lo-hash.h, lo-ieee.h, lo-regexp.cc, lo-regexp.h, lo-utils.cc, lo-utils.h, oct-base64.cc, oct-base64.h, oct-glob.cc, oct-glob.h, oct-inttypes.h, oct-mutex.cc, oct-mutex.h, oct-refcount.h, oct-shlib.cc, oct-shlib.h, oct-sparse.cc, oct-sparse.h, oct-string.h, octave-preserve-stream-state.h, pathsearch.cc, pathsearch.h, quit.cc, quit.h, unwind-prot.cc, unwind-prot.h, url-transfer.cc, url-transfer.h: Re-indent code after switch to using namespace macros.

author	Rik <rik@octave.org>
date	Thu, 01 Dec 2022 18:02:15 -0800
parents	e88a07dec498
children	597f3ee61a48

comparison

equal deleted inserted replaced

-:e88a07dec498
+:aac27ad79be6
 #include "utils.h"
 #include "variables.h"
 OCTAVE_BEGIN_NAMESPACE(octave)
 static bool
 pager_event_handler (pid_t pid, int status)
 {
 bool retval = false;
 if (pid > 0)
 {
 if (sys::wifexited (status) || sys::wifsignaled (status))
 {
 // Avoid warning() since that will put us back in the pager,
 // which would be bad news.
 std::cerr << "warning: connection to external pager lost (pid = "
 << pid << ')' << std::endl;
 std::cerr << "warning: flushing pending output (please wait)"
 << std::endl;
 // Request removal of this PID from the list of child
 // processes.
 retval = true;
 }
 }
 return retval;
 }
 // Assume our terminal wraps long lines.
 static bool
 more_than_a_screenful (const char *s, int len)
 {
 if (s)
 {
 int available_rows = command_editor::terminal_rows () - 2;
 int cols = command_editor::terminal_cols ();
 int count = 0;
 int chars_this_line = 0;
 for (int i = 0; i < len; i++)
 {
 if (*s++ == '\n')
 {
 count += chars_this_line / cols + 1;
 chars_this_line = 0;
 }
 else
 chars_this_line++;
 }
 if (count > available_rows)
+return true;
+}
+return false;
+}
+static std::string default_pager (void)
+{
+std::string pager_binary = sys::env::getenv ("PAGER");
+if (pager_binary.empty ())
+pager_binary = config::default_pager ();
+return pager_binary;
+}
+int
+pager_buf::sync (void)
+{
+output_system& output_sys = __get_output_system__ ();
+char *buf = pbase ();
+int len = pptr () - buf;
+if (output_sys.sync (buf, len))
+{
+flush_current_contents_to_diary ();
+seekoff (0, std::ios::beg);
+}
+return 0;
+}
+void
+pager_buf::flush_current_contents_to_diary (void)
+{
+char *buf = pbase () + m_diary_skip;
+std::size_t len = pptr () - buf;
+octave_diary.write (buf, len);
+m_diary_skip = 0;
+}
+void
+pager_buf::set_diary_skip (void)
+{
+m_diary_skip = pptr () - pbase ();
+}
+int
+diary_buf::sync (void)
+{
+output_system& output_sys = __get_output_system__ ();
+std::ofstream& external_diary_file = output_sys.external_diary_file ();
+if (output_sys.write_to_diary_file () && external_diary_file)
+{
+char *buf = pbase ();
+int len = pptr () - buf;
+if (len > 0)
+external_diary_file.write (buf, len);
+}
+seekoff (0, std::ios::beg);
+return 0;
+}
+pager_stream::pager_stream (void) : std::ostream (nullptr), m_pb (nullptr)
+{
+m_pb = new pager_buf ();
+rdbuf (m_pb);
+setf (unitbuf);
+}
+pager_stream::~pager_stream (void)
+{
+flush ();
+delete m_pb;
+}
+std::ostream& pager_stream::stream (void)
+{
+return *this;
+}
+void pager_stream::flush_current_contents_to_diary (void)
+{
+if (m_pb)
+m_pb->flush_current_contents_to_diary ();
+}
+void pager_stream::set_diary_skip (void)
+{
+if (m_pb)
+m_pb->set_diary_skip ();
+}
+// Reinitialize the pager buffer to avoid hanging on to large internal
+// buffers when they might not be needed.  This function should only be
+// called when the pager is not in use.  For example, just before
+// getting command-line input.
+void pager_stream::reset (void)
+{
+delete m_pb;
+m_pb = new pager_buf ();
+rdbuf (m_pb);
+setf (unitbuf);
+}
+diary_stream::diary_stream (void) : std::ostream (nullptr), m_db (nullptr)
+{
+m_db = new diary_buf ();
+rdbuf (m_db);
+setf (unitbuf);
+}
+diary_stream::~diary_stream (void)
+{
+flush ();
+delete m_db;
+}
+std::ostream& diary_stream::stream (void)
+{
+return *this;
+}
+// Reinitialize the diary buffer to avoid hanging on to large internal
+// buffers when they might not be needed.  This function should only be
+// called when the pager is not in use.  For example, just before
+// getting command-line input.
+void diary_stream::reset (void)
+{
+delete m_db;
+m_db = new diary_buf ();
+rdbuf (m_db);
+setf (unitbuf);
+}
+void flush_stdout (void)
+{
+output_system& output_sys = __get_output_system__ ();
+output_sys.flush_stdout ();
+}
+output_system::output_system (interpreter& interp)
+: m_interpreter (interp), m_pager_stream (), m_diary_stream (),
+m_external_pager (nullptr), m_external_diary_file (),
+m_diary_file_name ("diary"), m_PAGER (default_pager ()),
+m_PAGER_FLAGS (), m_page_output_immediately (false),
+m_page_screen_output (false), m_write_to_diary_file (false),
+m_really_flush_to_pager (false), m_flushing_output_to_pager (false)
+{ }
+octave_value output_system::PAGER (const octave_value_list& args,
+int nargout)
+{
+return set_internal_variable (m_PAGER, args, nargout, "PAGER", false);
+}
+octave_value output_system::PAGER_FLAGS (const octave_value_list& args,
+int nargout)
+{
+return set_internal_variable (m_PAGER_FLAGS, args, nargout,
+"PAGER_FLAGS", false);
+}
+octave_value
+output_system::page_output_immediately (const octave_value_list& args,
+int nargout)
+{
+return set_internal_variable (m_page_output_immediately, args, nargout,
+"page_output_immediately");
+}
+octave_value
+output_system::page_screen_output (const octave_value_list& args,
+int nargout)
+{
+return set_internal_variable (m_page_screen_output, args, nargout,
+"page_screen_output");
+}
+std::string output_system::pager_command (void) const
+{
+std::string cmd = m_PAGER;
+if (! (cmd.empty () || m_PAGER_FLAGS.empty ()))
+cmd += ' ' + m_PAGER_FLAGS;
+return cmd;
+}
+void output_system::reset (void)
+{
+flush_stdout ();
+m_pager_stream.reset ();
+m_diary_stream.reset ();
+}
+void output_system::flush_stdout (void)
+{
+if (! m_flushing_output_to_pager)
+{
+unwind_protect_var<bool> restore_var1 (m_really_flush_to_pager);
+unwind_protect_var<bool> restore_var2 (m_flushing_output_to_pager);
+m_really_flush_to_pager = true;
+m_flushing_output_to_pager = true;
+std::ostream& pager_ostream = m_pager_stream.stream ();
+pager_ostream.flush ();
+clear_external_pager ();
+}
+}
+void output_system::close_diary (void)
+{
+// Try to flush the current buffer to the diary now, so that things
+// like
+//
+// function foo ()
+//   diary on;
+//   ...
+//   diary off;
+// endfunction
+//
+// will do the right thing.
+m_pager_stream.flush_current_contents_to_diary ();
+if (m_external_diary_file.is_open ())
+{
+octave_diary.flush ();
+m_external_diary_file.close ();
+}
+}
+void output_system::open_diary (void)
+{
+close_diary ();
+// If there is pending output in the pager buf, it should not go
+// into the diary file.
+m_pager_stream.set_diary_skip ();
+m_external_diary_file.open (m_diary_file_name.c_str (), std::ios::app);
+if (! m_external_diary_file)
+error ("diary: can't open diary file '%s'", m_diary_file_name.c_str ());
+}
+bool output_system::sync (const char *buf, int len)
+{
+// FIXME: The following seems to be a bit of a mess.
+if (m_interpreter.server_mode ()
+|| ! m_interpreter.interactive ()
+|| application::forced_interactive ()
+|| m_really_flush_to_pager
+|| (m_page_screen_output && m_page_output_immediately)
+|| ! m_page_screen_output)
+{
+bool bypass_pager = (m_interpreter.server_mode ()
+|| ! m_interpreter.interactive ()
+|| application::forced_interactive ()
+|| ! m_page_screen_output
+|| (m_really_flush_to_pager
+&& m_page_screen_output
+&& ! m_page_output_immediately
+&& ! more_than_a_screenful (buf, len)));
+if (len > 0)
+{
+do_sync (buf, len, bypass_pager);
 return true;
 }
+}
-return false;
-}
+return false;
+}
-static std::string default_pager (void)
-{
+void output_system::clear_external_pager (void)
-std::string pager_binary = sys::env::getenv ("PAGER");
+{
+if (m_external_pager)
-if (pager_binary.empty ())
+{
-pager_binary = config::default_pager ();
+child_list& kids = m_interpreter.get_child_list ();
-return pager_binary;
+kids.remove (m_external_pager->pid ());
-}
+delete m_external_pager;
-int
+m_external_pager = nullptr;
-pager_buf::sync (void)
+}
-{
+}
-output_system& output_sys = __get_output_system__ ();
+void output_system::start_external_pager (void)
-char *buf = pbase ();
+{
+if (m_external_pager)
-int len = pptr () - buf;
+return;
-if (output_sys.sync (buf, len))
+std::string pgr = pager_command ();
-{
-flush_current_contents_to_diary ();
+if (! pgr.empty ())
+{
-seekoff (0, std::ios::beg);
+m_external_pager = new oprocstream (pgr.c_str ());
-}
+child_list& kids = m_interpreter.get_child_list ();
-return 0;
-}
+kids.insert (m_external_pager->pid (),
+pager_event_handler);
-void
+}
-pager_buf::flush_current_contents_to_diary (void)
+}
-{
-char *buf = pbase () + m_diary_skip;
+void output_system::do_sync (const char *msg, int len, bool bypass_pager)
+{
-std::size_t len = pptr () - buf;
+if (msg && len > 0)
+{
-octave_diary.write (buf, len);
+if (bypass_pager)
+{
-m_diary_skip = 0;
+if (m_interpreter.server_mode ())
-}
+{
+event_manager& evmgr = m_interpreter.get_event_manager ();
-void
-pager_buf::set_diary_skip (void)
+evmgr.interpreter_output (std::string (msg, len));
-{
+}
-m_diary_skip = pptr () - pbase ();
+else
-}
+{
+std::cout.write (msg, len);
-int
+std::cout.flush ();
-diary_buf::sync (void)
+}
-{
+}
-output_system& output_sys = __get_output_system__ ();
+else
+{
-std::ofstream& external_diary_file = output_sys.external_diary_file ();
+start_external_pager ();
-if (output_sys.write_to_diary_file () && external_diary_file)
+if (m_external_pager)
 {
-char *buf = pbase ();
+if (m_external_pager->good ())
+{
-int len = pptr () - buf;
+m_external_pager->write (msg, len);
-if (len > 0)
+m_external_pager->flush ();
-external_diary_file.write (buf, len);
-}
-seekoff (0, std::ios::beg);
-return 0;
-}
-pager_stream::pager_stream (void) : std::ostream (nullptr), m_pb (nullptr)
-{
-m_pb = new pager_buf ();
-rdbuf (m_pb);
-setf (unitbuf);
-}
-pager_stream::~pager_stream (void)
-{
-flush ();
-delete m_pb;
-}
-std::ostream& pager_stream::stream (void)
-{
-return *this;
-}
-void pager_stream::flush_current_contents_to_diary (void)
-{
-if (m_pb)
-m_pb->flush_current_contents_to_diary ();
-}
-void pager_stream::set_diary_skip (void)
-{
-if (m_pb)
-m_pb->set_diary_skip ();
-}
-// Reinitialize the pager buffer to avoid hanging on to large internal
-// buffers when they might not be needed.  This function should only be
-// called when the pager is not in use.  For example, just before
-// getting command-line input.
-void pager_stream::reset (void)
-{
-delete m_pb;
-m_pb = new pager_buf ();
-rdbuf (m_pb);
-setf (unitbuf);
-}
-diary_stream::diary_stream (void) : std::ostream (nullptr), m_db (nullptr)
-{
-m_db = new diary_buf ();
-rdbuf (m_db);
-setf (unitbuf);
-}
-diary_stream::~diary_stream (void)
-{
-flush ();
-delete m_db;
-}
-std::ostream& diary_stream::stream (void)
-{
-return *this;
-}
-// Reinitialize the diary buffer to avoid hanging on to large internal
-// buffers when they might not be needed.  This function should only be
-// called when the pager is not in use.  For example, just before
-// getting command-line input.
-void diary_stream::reset (void)
-{
-delete m_db;
-m_db = new diary_buf ();
-rdbuf (m_db);
-setf (unitbuf);
-}
-void flush_stdout (void)
-{
-output_system& output_sys = __get_output_system__ ();
-output_sys.flush_stdout ();
-}
-output_system::output_system (interpreter& interp)
-: m_interpreter (interp), m_pager_stream (), m_diary_stream (),
-m_external_pager (nullptr), m_external_diary_file (),
-m_diary_file_name ("diary"), m_PAGER (default_pager ()),
-m_PAGER_FLAGS (), m_page_output_immediately (false),
-m_page_screen_output (false), m_write_to_diary_file (false),
-m_really_flush_to_pager (false), m_flushing_output_to_pager (false)
-{ }
-octave_value output_system::PAGER (const octave_value_list& args,
-int nargout)
-{
-return set_internal_variable (m_PAGER, args, nargout, "PAGER", false);
-}
-octave_value output_system::PAGER_FLAGS (const octave_value_list& args,
-int nargout)
-{
-return set_internal_variable (m_PAGER_FLAGS, args, nargout,
-"PAGER_FLAGS", false);
-}
-octave_value
-output_system::page_output_immediately (const octave_value_list& args,
-int nargout)
-{
-return set_internal_variable (m_page_output_immediately, args, nargout,
-"page_output_immediately");
-}
-octave_value
-output_system::page_screen_output (const octave_value_list& args,
-int nargout)
-{
-return set_internal_variable (m_page_screen_output, args, nargout,
-"page_screen_output");
-}
-std::string output_system::pager_command (void) const
-{
-std::string cmd = m_PAGER;
-if (! (cmd.empty () || m_PAGER_FLAGS.empty ()))
-cmd += ' ' + m_PAGER_FLAGS;
-return cmd;
-}
-void output_system::reset (void)
-{
-flush_stdout ();
-m_pager_stream.reset ();
-m_diary_stream.reset ();
-}
-void output_system::flush_stdout (void)
-{
-if (! m_flushing_output_to_pager)
-{
-unwind_protect_var<bool> restore_var1 (m_really_flush_to_pager);
-unwind_protect_var<bool> restore_var2 (m_flushing_output_to_pager);
-m_really_flush_to_pager = true;
-m_flushing_output_to_pager = true;
-std::ostream& pager_ostream = m_pager_stream.stream ();
-pager_ostream.flush ();
-clear_external_pager ();
-}
-}
-void output_system::close_diary (void)
-{
-// Try to flush the current buffer to the diary now, so that things
-// like
-//
-// function foo ()
-//   diary on;
-//   ...
-//   diary off;
-// endfunction
-//
-// will do the right thing.
-m_pager_stream.flush_current_contents_to_diary ();
-if (m_external_diary_file.is_open ())
-{
-octave_diary.flush ();
-m_external_diary_file.close ();
-}
-}
-void output_system::open_diary (void)
-{
-close_diary ();
-// If there is pending output in the pager buf, it should not go
-// into the diary file.
-m_pager_stream.set_diary_skip ();
-m_external_diary_file.open (m_diary_file_name.c_str (), std::ios::app);
-if (! m_external_diary_file)
-error ("diary: can't open diary file '%s'", m_diary_file_name.c_str ());
-}
-bool output_system::sync (const char *buf, int len)
-{
-// FIXME: The following seems to be a bit of a mess.
-if (m_interpreter.server_mode ()
-|| ! m_interpreter.interactive ()
-|| application::forced_interactive ()
-|| m_really_flush_to_pager
-|| (m_page_screen_output && m_page_output_immediately)
-|| ! m_page_screen_output)
-{
-bool bypass_pager = (m_interpreter.server_mode ()
-|| ! m_interpreter.interactive ()
-|| application::forced_interactive ()
-|| ! m_page_screen_output
-|| (m_really_flush_to_pager
-&& m_page_screen_output
-&& ! m_page_output_immediately
-&& ! more_than_a_screenful (buf, len)));
-if (len > 0)
-{
-do_sync (buf, len, bypass_pager);
-return true;
-}
-}
-return false;
-}
-void output_system::clear_external_pager (void)
-{
-if (m_external_pager)
-{
-child_list& kids = m_interpreter.get_child_list ();
-kids.remove (m_external_pager->pid ());
-delete m_external_pager;
-m_external_pager = nullptr;
-}
-}
-void output_system::start_external_pager (void)
-{
-if (m_external_pager)
-return;
-std::string pgr = pager_command ();
-if (! pgr.empty ())
-{
-m_external_pager = new oprocstream (pgr.c_str ());
-child_list& kids = m_interpreter.get_child_list ();
-kids.insert (m_external_pager->pid (),
-pager_event_handler);
-}
-}
-void output_system::do_sync (const char *msg, int len, bool bypass_pager)
-{
-if (msg && len > 0)
-{
-if (bypass_pager)
-{
-if (m_interpreter.server_mode ())
-{
-event_manager& evmgr = m_interpreter.get_event_manager ();
-evmgr.interpreter_output (std::string (msg, len));
-}
-else
-{
-std::cout.write (msg, len);
-std::cout.flush ();
-}
-}
-else
-{
-start_external_pager ();
-if (m_external_pager)
-{
-if (m_external_pager->good ())
-{
-m_external_pager->write (msg, len);
-m_external_pager->flush ();
 #if defined (EPIPE)
 if (errno == EPIPE)
 m_external_pager->setstate (std::ios::failbit);
 #endif
 }
 else
 {
 // FIXME: something is not right with the
 // pager.  If it died then we should receive a
 // signal for that.  If there is some other problem,
 // then what?
 }
 }
 else
 {
 std::cout.write (msg, len);
 std::cout.flush ();
 }
 }
 }
 }
 std::ostream& __stdout__ (void)
 {
 output_system& output_sys = __get_output_system__ ();
 return output_sys.__stdout__ ();
 }
 std::ostream& __diary__ (void)
 {
 output_system& output_sys = __get_output_system__ ();
 return output_sys.__diary__ ();
 }
 DEFMETHOD (diary, interp, args, nargout,
 doc: /* -*- texinfo -*-
 @deftypefn  {} {} diary
 @deftypefnx {} {} diary on

Mercurial > octave

comparison libinterp/corefcn/pager.cc @ 31607:aac27ad79be6 stable