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authorJoel Sherrill <joel.sherrill@OARcorp.com>2011-04-08 16:24:33 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>2011-04-08 16:24:33 +0000
commitb667555541a4d65bb9dae6f0e0f240e6a05b148e (patch)
treeb3ae5c92f04ae68fbf9580d6efcf1a1510851495 /readline-6.2/examples/rlptytest.c
parent3d733a6dff33eeb6eed978eddfba86f989cc1886 (diff)
2011-04-08 Joel Sherrill <joel.sherrill@oarcorp.com>
* RTEMS_Makefiles/Makefile.readline-6.2, readline-6.2/CHANGELOG, readline-6.2/CHANGES, readline-6.2/COPYING, readline-6.2/INSTALL, readline-6.2/MANIFEST, readline-6.2/Makefile.in, readline-6.2/NEWS, readline-6.2/README, readline-6.2/USAGE, readline-6.2/aclocal.m4, readline-6.2/ansi_stdlib.h, readline-6.2/bind.c, readline-6.2/callback.c, readline-6.2/chardefs.h, readline-6.2/compat.c, readline-6.2/complete.c, readline-6.2/config.h.in, readline-6.2/configure, readline-6.2/configure.in, readline-6.2/display.c, readline-6.2/emacs_keymap.c, readline-6.2/funmap.c, readline-6.2/histexpand.c, readline-6.2/histfile.c, readline-6.2/histlib.h, readline-6.2/history.c, readline-6.2/history.h, readline-6.2/histsearch.c, readline-6.2/input.c, readline-6.2/isearch.c, readline-6.2/keymaps.c, readline-6.2/keymaps.h, readline-6.2/kill.c, readline-6.2/macro.c, readline-6.2/mbutil.c, readline-6.2/misc.c, readline-6.2/nls.c, readline-6.2/parens.c, readline-6.2/patchlevel, readline-6.2/posixdir.h, readline-6.2/posixjmp.h, readline-6.2/posixselect.h, readline-6.2/posixstat.h, readline-6.2/readline.c, readline-6.2/readline.h, readline-6.2/rlconf.h, readline-6.2/rldefs.h, readline-6.2/rlmbutil.h, readline-6.2/rlprivate.h, readline-6.2/rlshell.h, readline-6.2/rlstdc.h, readline-6.2/rltty.c, readline-6.2/rltty.h, readline-6.2/rltypedefs.h, readline-6.2/rlwinsize.h, readline-6.2/savestring.c, readline-6.2/search.c, readline-6.2/shell.c, readline-6.2/signals.c, readline-6.2/tcap.h, readline-6.2/terminal.c, readline-6.2/text.c, readline-6.2/tilde.c, readline-6.2/tilde.h, readline-6.2/undo.c, readline-6.2/util.c, readline-6.2/vi_keymap.c, readline-6.2/vi_mode.c, readline-6.2/xfree.c, readline-6.2/xmalloc.c, readline-6.2/xmalloc.h, readline-6.2/doc/Makefile.in, readline-6.2/doc/fdl.texi, readline-6.2/doc/history.0, readline-6.2/doc/history.3, readline-6.2/doc/history.dvi, readline-6.2/doc/history.html, readline-6.2/doc/history.info, readline-6.2/doc/history.pdf, readline-6.2/doc/history.ps, readline-6.2/doc/history.texi, readline-6.2/doc/history_3.ps, readline-6.2/doc/hstech.texi, readline-6.2/doc/hsuser.texi, readline-6.2/doc/readline.0, readline-6.2/doc/readline.3, readline-6.2/doc/readline.dvi, readline-6.2/doc/readline.html, readline-6.2/doc/readline.info, readline-6.2/doc/readline.pdf, readline-6.2/doc/readline.ps, readline-6.2/doc/readline_3.ps, readline-6.2/doc/rlman.texi, readline-6.2/doc/rltech.texi, readline-6.2/doc/rluser.texi, readline-6.2/doc/rluserman.dvi, readline-6.2/doc/rluserman.html, readline-6.2/doc/rluserman.info, readline-6.2/doc/rluserman.pdf, readline-6.2/doc/rluserman.ps, readline-6.2/doc/rluserman.texi, readline-6.2/doc/texi2dvi, readline-6.2/doc/texi2html, readline-6.2/doc/texinfo.tex, readline-6.2/doc/version.texi, readline-6.2/examples/Inputrc, readline-6.2/examples/Makefile.in, readline-6.2/examples/excallback.c, readline-6.2/examples/fileman.c, readline-6.2/examples/histexamp.c, readline-6.2/examples/manexamp.c, readline-6.2/examples/readlinebuf.h, readline-6.2/examples/rl-fgets.c, readline-6.2/examples/rl.c, readline-6.2/examples/rlcat.c, readline-6.2/examples/rlevent.c, readline-6.2/examples/rlptytest.c, readline-6.2/examples/rltest.c, readline-6.2/examples/rlversion.c, readline-6.2/examples/rlwrap-0.30.tar.gz, readline-6.2/examples/autoconf/BASH_CHECK_LIB_TERMCAP, readline-6.2/examples/autoconf/RL_LIB_READLINE_VERSION, readline-6.2/examples/autoconf/wi_LIB_READLINE, readline-6.2/examples/rlfe/ChangeLog, readline-6.2/examples/rlfe/Makefile.in, readline-6.2/examples/rlfe/README, readline-6.2/examples/rlfe/config.h.in, readline-6.2/examples/rlfe/configure, readline-6.2/examples/rlfe/configure.in, readline-6.2/examples/rlfe/extern.h, readline-6.2/examples/rlfe/os.h, readline-6.2/examples/rlfe/pty.c, readline-6.2/examples/rlfe/rlfe.c, readline-6.2/examples/rlfe/screen.h, readline-6.2/shlib/Makefile.in, readline-6.2/support/config.guess, readline-6.2/support/config.rpath, readline-6.2/support/config.sub, readline-6.2/support/install.sh, readline-6.2/support/mkdirs, readline-6.2/support/mkdist, readline-6.2/support/mkinstalldirs, readline-6.2/support/shlib-install, readline-6.2/support/shobj-conf, readline-6.2/support/wcwidth.c: New files.
Diffstat (limited to 'readline-6.2/examples/rlptytest.c')
-rw-r--r--readline-6.2/examples/rlptytest.c337
1 files changed, 337 insertions, 0 deletions
diff --git a/readline-6.2/examples/rlptytest.c b/readline-6.2/examples/rlptytest.c
new file mode 100644
index 0000000..79257db
--- /dev/null
+++ b/readline-6.2/examples/rlptytest.c
@@ -0,0 +1,337 @@
+/*
+ *
+ * Another test harness for the readline callback interface.
+ *
+ * Author: Bob Rossi <bob@brasko.net>
+ */
+
+#if defined (HAVE_CONFIG_H)
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <curses.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <signal.h>
+
+#if 0 /* LINUX */
+#include <pty.h>
+#else
+#include <util.h>
+#endif
+
+#ifdef READLINE_LIBRARY
+# include "readline.h"
+#else
+# include <readline/readline.h>
+#endif
+
+/**
+ * Master/Slave PTY used to keep readline off of stdin/stdout.
+ */
+static int masterfd = -1;
+static int slavefd;
+
+void
+sigint (s)
+ int s;
+{
+ tty_reset (STDIN_FILENO);
+ close (masterfd);
+ close (slavefd);
+ printf ("\n");
+ exit (0);
+}
+
+static int
+user_input()
+{
+ int size;
+ const int MAX = 1024;
+ char *buf = (char *)malloc(MAX+1);
+
+ size = read (STDIN_FILENO, buf, MAX);
+ if (size == -1)
+ return -1;
+
+ size = write (masterfd, buf, size);
+ if (size == -1)
+ return -1;
+
+ return 0;
+}
+
+static int
+readline_input()
+{
+ const int MAX = 1024;
+ char *buf = (char *)malloc(MAX+1);
+ int size;
+
+ size = read (masterfd, buf, MAX);
+ if (size == -1)
+ {
+ free( buf );
+ buf = NULL;
+ return -1;
+ }
+
+ buf[size] = 0;
+
+ /* Display output from readline */
+ if ( size > 0 )
+ fprintf(stderr, "%s", buf);
+
+ free( buf );
+ buf = NULL;
+ return 0;
+}
+
+static void
+rlctx_send_user_command(char *line)
+{
+ /* This happens when rl_callback_read_char gets EOF */
+ if ( line == NULL )
+ return;
+
+ if (strcmp (line, "exit") == 0) {
+ tty_reset (STDIN_FILENO);
+ close (masterfd);
+ close (slavefd);
+ printf ("\n");
+ exit (0);
+ }
+
+ /* Don't add the enter command */
+ if ( line && *line != '\0' )
+ add_history(line);
+}
+
+static void
+custom_deprep_term_function ()
+{
+}
+
+static int
+init_readline (int inputfd, int outputfd)
+{
+ FILE *inputFILE, *outputFILE;
+
+ inputFILE = fdopen (inputfd, "r");
+ if (!inputFILE)
+ return -1;
+
+ outputFILE = fdopen (outputfd, "w");
+ if (!outputFILE)
+ return -1;
+
+ rl_instream = inputFILE;
+ rl_outstream = outputFILE;
+
+ /* Tell readline what the prompt is if it needs to put it back */
+ rl_callback_handler_install("(rltest): ", rlctx_send_user_command);
+
+ /* Set the terminal type to dumb so the output of readline can be
+ * understood by tgdb */
+ if ( rl_reset_terminal("dumb") == -1 )
+ return -1;
+
+ /* For some reason, readline can not deprep the terminal.
+ * However, it doesn't matter because no other application is working on
+ * the terminal besides readline */
+ rl_deprep_term_function = custom_deprep_term_function;
+
+ using_history();
+ read_history(".history");
+
+ return 0;
+}
+
+static int
+main_loop(void)
+{
+ fd_set rset;
+ int max;
+
+ max = (masterfd > STDIN_FILENO) ? masterfd : STDIN_FILENO;
+ max = (max > slavefd) ? max : slavefd;
+
+ for (;;)
+ {
+ /* Reset the fd_set, and watch for input from GDB or stdin */
+ FD_ZERO(&rset);
+
+ FD_SET(STDIN_FILENO, &rset);
+ FD_SET(slavefd, &rset);
+ FD_SET(masterfd, &rset);
+
+ /* Wait for input */
+ if (select(max + 1, &rset, NULL, NULL, NULL) == -1)
+ {
+ if (errno == EINTR)
+ continue;
+ else
+ return -1;
+ }
+
+ /* Input received through the pty: Handle it
+ * Wrote to masterfd, slave fd has that input, alert readline to read it.
+ */
+ if (FD_ISSET(slavefd, &rset))
+ rl_callback_read_char();
+
+ /* Input received through the pty.
+ * Readline read from slavefd, and it wrote to the masterfd.
+ */
+ if (FD_ISSET(masterfd, &rset))
+ if ( readline_input() == -1 )
+ return -1;
+
+ /* Input received: Handle it, write to masterfd (input to readline) */
+ if (FD_ISSET(STDIN_FILENO, &rset))
+ if ( user_input() == -1 )
+ return -1;
+ }
+
+ return 0;
+}
+
+/* The terminal attributes before calling tty_cbreak */
+static struct termios save_termios;
+static struct winsize size;
+static enum { RESET, TCBREAK } ttystate = RESET;
+
+/* tty_cbreak: Sets terminal to cbreak mode. Also known as noncanonical mode.
+ * 1. Signal handling is still turned on, so the user can still type those.
+ * 2. echo is off
+ * 3. Read in one char at a time.
+ *
+ * fd - The file descriptor of the terminal
+ *
+ * Returns: 0 on sucess, -1 on error
+ */
+int tty_cbreak(int fd){
+ struct termios buf;
+ int ttysavefd = -1;
+
+ if(tcgetattr(fd, &save_termios) < 0)
+ return -1;
+
+ buf = save_termios;
+ buf.c_lflag &= ~(ECHO | ICANON);
+ buf.c_iflag &= ~(ICRNL | INLCR);
+ buf.c_cc[VMIN] = 1;
+ buf.c_cc[VTIME] = 0;
+
+#if defined (VLNEXT) && defined (_POSIX_VDISABLE)
+ buf.c_cc[VLNEXT] = _POSIX_VDISABLE;
+#endif
+
+#if defined (VDSUSP) && defined (_POSIX_VDISABLE)
+ buf.c_cc[VDSUSP] = _POSIX_VDISABLE;
+#endif
+
+ /* enable flow control; only stty start char can restart output */
+#if 0
+ buf.c_iflag |= (IXON|IXOFF);
+#ifdef IXANY
+ buf.c_iflag &= ~IXANY;
+#endif
+#endif
+
+ /* disable flow control; let ^S and ^Q through to pty */
+ buf.c_iflag &= ~(IXON|IXOFF);
+#ifdef IXANY
+ buf.c_iflag &= ~IXANY;
+#endif
+
+ if(tcsetattr(fd, TCSAFLUSH, &buf) < 0)
+ return -1;
+
+ ttystate = TCBREAK;
+ ttysavefd = fd;
+
+ /* set size */
+ if(ioctl(fd, TIOCGWINSZ, (char *)&size) < 0)
+ return -1;
+
+#ifdef DEBUG
+ err_msg("%d rows and %d cols\n", size.ws_row, size.ws_col);
+#endif
+
+ return (0);
+}
+
+int
+tty_off_xon_xoff (int fd)
+{
+ struct termios buf;
+ int ttysavefd = -1;
+
+ if(tcgetattr(fd, &buf) < 0)
+ return -1;
+
+ buf.c_iflag &= ~(IXON|IXOFF);
+
+ if(tcsetattr(fd, TCSAFLUSH, &buf) < 0)
+ return -1;
+
+ return 0;
+}
+
+/* tty_reset: Sets the terminal attributes back to their previous state.
+ * PRE: tty_cbreak must have already been called.
+ *
+ * fd - The file descrioptor of the terminal to reset.
+ *
+ * Returns: 0 on success, -1 on error
+ */
+int tty_reset(int fd)
+{
+ if(ttystate != TCBREAK)
+ return (0);
+
+ if(tcsetattr(fd, TCSAFLUSH, &save_termios) < 0)
+ return (-1);
+
+ ttystate = RESET;
+
+ return 0;
+}
+
+int
+main()
+{
+ int val;
+ val = openpty (&masterfd, &slavefd, NULL, NULL, NULL);
+ if (val == -1)
+ return -1;
+
+ val = tty_off_xon_xoff (masterfd);
+ if (val == -1)
+ return -1;
+
+ val = init_readline (slavefd, slavefd);
+ if (val == -1)
+ return -1;
+
+ val = tty_cbreak (STDIN_FILENO);
+ if (val == -1)
+ return -1;
+
+ signal (SIGINT, sigint);
+
+ val = main_loop ();
+
+ tty_reset (STDIN_FILENO);
+
+ if (val == -1)
+ return -1;
+
+ return 0;
+}