X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Fbase%2Flib_initscr.c;h=f663819d599d8fd96d350ce0f4cb0798f3c2f189;hp=9a89a077cd44822bf0baf696f4477d8d670ec18c;hb=2b7c2fd2f9d58719770902ce4d0d0aeb87b284f7;hpb=0eb88fc5281804773e2a0c7a488a4452463535ce

diff --git a/ncurses/base/lib_initscr.c b/ncurses/base/lib_initscr.c
index 9a89a077..f663819d 100644
--- a/ncurses/base/lib_initscr.c
+++ b/ncurses/base/lib_initscr.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc.                        *
+ * Copyright 2019,2020 Thomas E. Dickey                                     *
+ * Copyright 1998-2016,2017 Free Software Foundation, Inc.                  *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -29,6 +30,7 @@
 /****************************************************************************
  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ *     and: Thomas E. Dickey                        1996-on                 *
  ****************************************************************************/
 
 /*
@@ -39,40 +41,70 @@
 */
 
 #include <curses.priv.h>
-#include <tic.h>	/* for MAX_ALIAS */
 
 #if HAVE_SYS_TERMIO_H
-#include <sys/termio.h>	/* needed for ISC */
+#include <sys/termio.h>		/* needed for ISC */
 #endif
 
-MODULE_ID("$Id: lib_initscr.c,v 1.26 1998/12/19 23:10:09 tom Exp $")
+MODULE_ID("$Id: lib_initscr.c,v 1.47 2020/09/06 20:48:55 tom Exp $")
 
-WINDOW *initscr(void)
+NCURSES_EXPORT(WINDOW *)
+initscr(void)
 {
-static	bool initialized = FALSE;
-NCURSES_CONST char *name;
-int value;
+    WINDOW *result;
 
-	T((T_CALLED("initscr()")));
-	/* Portable applications must not call initscr() more than once */
-	if (!initialized) {
-		initialized = TRUE;
+    START_TRACE();
+    T((T_CALLED("initscr()")));
 
-		if ((name = getenv("TERM")) == 0
-		 || *name == '\0')
-			name = "unknown";
-		if (newterm(name, stdout, stdin) == 0) {
-			fprintf(stderr, "Error opening terminal: %s.\n", name);
-			exit(EXIT_FAILURE);
-		}
+    _nc_init_pthreads();
+    _nc_lock_global(curses);
 
-		/* allow user to set maximum escape delay from the environment */
-		if ((value = _nc_getenv_num("ESCDELAY")) >= 0) {
-			ESCDELAY = value;
-		}
+    /* Portable applications must not call initscr() more than once */
+    if (!_nc_globals.init_screen) {
+	const char *env;
+	char *name;
 
-		/* def_shell_mode - done in newterm/_nc_setupscreen */
-		def_prog_mode();
+	_nc_globals.init_screen = TRUE;
+
+	env = getenv("TERM");
+	(void) CHECK_TERM_ENV(env, "unknown");
+
+	if ((name = strdup(env)) == NULL) {
+	    fprintf(stderr, "Error opening allocating $TERM.\n");
+	    ExitProgram(EXIT_FAILURE);
+	}
+#ifdef __CYGWIN__
+	/*
+	 * 2002/9/21
+	 * Work around a bug in Cygwin.  Full-screen subprocesses run from
+	 * bash, in turn spawned from another full-screen process, will dump
+	 * core when attempting to write to stdout.  Opening /dev/tty
+	 * explicitly seems to fix the problem.
+	 */
+	if (NC_ISATTY(fileno(stdout))) {
+	    FILE *fp = fopen("/dev/tty", "w");
+	    if (fp != 0 && NC_ISATTY(fileno(fp))) {
+		fclose(stdout);
+		dup2(fileno(fp), STDOUT_FILENO);
+		stdout = fdopen(STDOUT_FILENO, "w");
+	    }
+	}
+#endif
+	if (newterm(name, stdout, stdin) == 0) {
+	    fprintf(stderr, "Error opening terminal: %s.\n", name);
+	    ExitProgram(EXIT_FAILURE);
 	}
-	returnWin(stdscr);
+
+	/* def_shell_mode - done in newterm/_nc_setupscreen */
+#if NCURSES_SP_FUNCS
+	NCURSES_SP_NAME(def_prog_mode) (CURRENT_SCREEN);
+#else
+	def_prog_mode();
+#endif
+	free(name);
+    }
+    result = stdscr;
+    _nc_unlock_global(curses);
+
+    returnWin(result);
 }