Mercurial > octave
view liboctave/wrappers/octave-popen2.c @ 33586:3216c01fd6a7 stable tip
fix dragging editor from main window into floating state (bug #65725)
* file-editor.cc (toplevel_changes): added missing call to original
slot octave_doc_widget::toplevel_changed
author | Torsten Lilge <ttl-octave@mailbox.org> |
---|---|
date | Tue, 14 May 2024 22:03:47 +0200 |
parents | 2e484f9f1f18 |
children |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2016-2024 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave 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 3 of the License, or // (at your option) any later version. // // Octave 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 Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// // It makes more sense to define octave_popen2 with the wrapper // functions than it does to try to provide wrappers for all the // individual functions and macros that it uses and that may be provided // by gnulib. We don't include gnulib headers directly in Octave's C++ // source files to avoid problems that may be caused by the way that // gnulib overrides standard library functions. #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #if defined (__WIN32__) && ! defined (__CYGWIN__) # include <fcntl.h> # include <io.h> # define WIN32_LEAN_AND_MEAN 1 # include <windows.h> # include "uniconv-wrappers.h" #else # include <errno.h> # include <fcntl.h> # include <sys/types.h> # include <unistd.h> #endif #include "octave-popen2.h" #if defined (__WIN32__) && ! defined (__CYGWIN__) static char * make_command_string (const char *cmd, char *const *args) { char *const *argp; size_t cmd_len; char *command; // Count Command length, quotes, and terminating NUL character. cmd_len = strlen (cmd) + 3; // Count argument length, space, and quotes. // Ignore first arg as it is the command. argp = args; while (*++argp) cmd_len += strlen (*argp) + 3; command = (char *) malloc (cmd_len); sprintf (command, "\"%s\"", cmd); argp = args; while (*++argp) sprintf (command, "%s \"%s\"", command, *argp); return command; } pid_t octave_popen2 (const char *cmd, char *const *args, bool sync_mode, int *fildes, const char **errmsg) { pid_t pid; char *command; bool status; PROCESS_INFORMATION pi; STARTUPINFO si; HANDLE hProcess = GetCurrentProcess (); HANDLE childRead, childWrite, parentRead, parentWrite; DWORD pipeMode; ZeroMemory (&pi, sizeof (pi)); ZeroMemory (&si, sizeof (si)); si.cb = sizeof (si); if (! CreatePipe (&childRead, &parentWrite, 0, 0) || ! DuplicateHandle (hProcess, childRead, hProcess, &childRead, 0, TRUE, DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE)) { *errmsg = "popen2: pipe creation failed"; return -1; } if (! CreatePipe (&parentRead, &childWrite, 0, 0) || ! DuplicateHandle (hProcess, childWrite, hProcess, &childWrite, 0, TRUE, DUPLICATE_SAME_ACCESS | DUPLICATE_CLOSE_SOURCE)) { *errmsg = "popen2: pipe creation failed"; return -1; } if (! sync_mode) { pipeMode = PIPE_NOWAIT; SetNamedPipeHandleState (parentRead, &pipeMode, 0, 0); } fildes[1] = _open_osfhandle ((intptr_t) parentRead, _O_RDONLY | _O_BINARY); fildes[0] = _open_osfhandle ((intptr_t) parentWrite, _O_WRONLY | _O_BINARY); si.dwFlags |= STARTF_USESTDHANDLES; si.hStdInput = childRead; si.hStdOutput = childWrite; si.hStdError = GetStdHandle (STD_ERROR_HANDLE); command = make_command_string (cmd, args); wchar_t *wcmd = u8_to_wchar (command); free (command); status = CreateProcessW (NULL, wcmd, NULL, NULL, TRUE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi); free (wcmd); if (! status) { *errmsg = "popen2: process creation failed"; return -1; } pid = pi.dwProcessId; CloseHandle (childRead); CloseHandle (childWrite); CloseHandle (pi.hProcess); CloseHandle (pi.hThread); return pid; } #else pid_t octave_popen2 (const char *cmd, char *const *args, bool sync_mode, int *fildes, const char **errmsg) { pid_t pid; int child_stdin[2], child_stdout[2]; if (pipe (child_stdin) < 0) { *errmsg = strerror (errno); return -1; } if (pipe (child_stdout) < 0) { close (child_stdin[0]); close (child_stdin[1]); *errmsg = strerror (errno); return -1; } pid = fork (); if (pid == 0) { // Child process close (child_stdin[1]); close (child_stdout[0]); if (dup2 (child_stdin[0], STDIN_FILENO) >= 0) { close (child_stdin[0]); if (dup2 (child_stdout[1], STDOUT_FILENO) >= 0) { close (child_stdout[1]); if (execvp (cmd, args) < 0) perror ("popen2 (child)"); } else perror ("popen2 (child)"); } else perror ("popen2 (child)"); _exit (127); } else if (pid > 0) { // Parent process close (child_stdin[0]); close (child_stdout[1]); #if defined (F_SETFL) && defined (O_NONBLOCK) if (! sync_mode && fcntl (child_stdout[0], F_SETFL, O_NONBLOCK) < 0) { *errmsg = strerror (errno); return -1; } else #endif { fildes[0] = child_stdin[1]; fildes[1] = child_stdout[0]; return pid; } } *errmsg = "foobar!"; *errmsg = strerror (errno); return pid; } #endif