/* To do: * - Replace explicit 8/24 splits with macros. * - We need to pass the control-chars vecs in as Scheme * strings, and test the length before doing the memcpy. */ /* * Scheme48/scsh terminal control interface. * Routines that require custom C support. * Copyright (c) 1995 by Brian D. Carlstrom * Re-written by Olin. */ #include #include /* ctermid decl */ #include #include #include #include #include "scheme48.h" /* This #include is for the #ifdef'd code in open_ctty() below, and ** is therefor ifdef'd identically. */ #if defined(TIOCSCTTY) && !defined(CIBAUD) #include #endif #include "tty1.h" /* Make sure the .h interface agrees with the code. */ /*****************************************************************************/ s48_value scheme_tcgetattr(s48_value sch_fd, s48_value sch_control_chars) /* int *iflag, int *oflag, int *cflag, int *lflag, int *ispeed, int *ospeed)*/ { struct termios t; int result = tcgetattr(s48_extract_fixnum (sch_fd), &t); int i; s48_value sch_iflag = S48_UNSPECIFIC; s48_value sch_oflag = S48_UNSPECIFIC; s48_value sch_cflag = S48_UNSPECIFIC; s48_value sch_lflag = S48_UNSPECIFIC; s48_value sch_ispeed = S48_UNSPECIFIC; s48_value sch_ospeed = S48_UNSPECIFIC; s48_value sch_retval = S48_UNSPECIFIC; S48_DECLARE_GC_PROTECT(6); S48_GC_PROTECT_6(sch_iflag, sch_oflag, sch_cflag, sch_lflag, sch_ispeed, sch_ospeed); if (result == -1) { S48_GC_UNPROTECT(); s48_raise_os_error_2 (errno, sch_fd, sch_control_chars); } for (i = 0; i < NCCS; i++) S48_STRING_SET(sch_control_chars, i, t.c_cc[i]); { sch_iflag = s48_enter_integer(t.c_iflag); sch_oflag = s48_enter_integer(t.c_oflag); sch_cflag = s48_enter_integer(t.c_cflag); sch_lflag = s48_enter_integer(t.c_lflag); sch_ispeed = s48_enter_integer(cfgetispeed(&t)); sch_ospeed = s48_enter_integer(cfgetospeed(&t)); sch_retval = s48_list_6 (sch_iflag, sch_oflag, sch_cflag, sch_lflag, sch_ispeed, sch_ospeed); S48_GC_UNPROTECT(); return sch_retval; } } /* The Scheme caller of this is commented out...*/ int scheme_tcgetattrB(int fd, char *control_chars, s48_value scmvec) { struct termios t; int result = tcgetattr(fd, &t); S48_DECLARE_GC_PROTECT(1); S48_GC_PROTECT_1(scmvec); /* JMG int *ivec = ADDRESS_AFTER_HEADER(scmvec, int);*/ if (result != -1) { memcpy(control_chars, t.c_cc, NCCS); S48_VECTOR_SET(scmvec, 0, s48_enter_integer(t.c_iflag)); S48_VECTOR_SET(scmvec, 1, s48_enter_integer(t.c_oflag)); S48_VECTOR_SET(scmvec, 2, s48_enter_integer(t.c_cflag)); S48_VECTOR_SET(scmvec, 3, s48_enter_integer(t.c_lflag)); S48_VECTOR_SET(scmvec, 4, s48_enter_fixnum(cfgetispeed(&t))); S48_VECTOR_SET(scmvec, 5, s48_enter_fixnum(cfgetospeed(&t))); } S48_GC_UNPROTECT(); return result; } /*****************************************************************************/ s48_value scheme_tcsetattr(s48_value sch_fd, s48_value sch_option, s48_value sch_control_chars, s48_value sch_iflag, s48_value sch_oflag, s48_value sch_cflag, s48_value sch_lflag, s48_value sch_ispeed, s48_value sch_ospeed, s48_value sch_min, s48_value sch_time) { struct termios t; memcpy(t.c_cc, s48_extract_string (sch_control_chars), NCCS); /* This first clause of this conditional test will hopefully ** resolve the branch at compile time. However, since VMIN/VEOF ** and VTIME/VEOL are allowed by POSIX to colllide, we have to check. ** If they do collide, we set EOF & EOL in canonical mode, and MIN & TIME ** in raw mode. Ah, Unix. */ if( (VMIN != VEOF && VTIME != VEOL) || !(t.c_lflag & ICANON) ) { t.c_cc[VMIN] = s48_extract_fixnum (sch_min); t.c_cc[VTIME] = s48_extract_integer (sch_time); } t.c_iflag = s48_extract_integer (sch_iflag); t.c_oflag = s48_extract_integer (sch_oflag); t.c_cflag = s48_extract_integer (sch_cflag); t.c_lflag = s48_extract_integer (sch_lflag); cfsetispeed(&t, s48_extract_integer (sch_ispeed)); cfsetospeed(&t, s48_extract_integer (sch_ospeed)); if (tcsetattr(s48_extract_fixnum (sch_fd), s48_extract_integer (sch_option), &t) == -1) s48_raise_os_error_1 (errno, sch_fd); return S48_UNSPECIFIC; } s48_value sch_tcsendbreak (s48_value sch_fd, s48_value sch_duration) { if (tcsendbreak (s48_extract_fixnum (sch_fd), s48_extract_integer (sch_duration)) == -1) s48_raise_os_error_2 (errno, sch_fd, sch_duration); return S48_UNSPECIFIC; } s48_value sch_tcdrain (s48_value sch_fd) { if (tcdrain (s48_extract_fixnum (sch_fd)) == -1) s48_raise_os_error_1 (errno, sch_fd); return S48_UNSPECIFIC; } s48_value sch_tcflush (s48_value sch_fd, s48_value sch_action) { if (tcflush (s48_extract_fixnum (sch_fd), s48_extract_fixnum (sch_action)) == -1) s48_raise_os_error_2 (errno, sch_fd, sch_action); return S48_UNSPECIFIC; } s48_value sch_tcflow (s48_value sch_fd, s48_value sch_action) { if (tcflow (s48_extract_fixnum (sch_fd), s48_extract_fixnum (sch_action)) == -1) s48_raise_os_error_2 (errno, sch_fd, sch_action); return S48_UNSPECIFIC; } s48_value sch_tcsetpgrp (s48_value sch_fd, s48_value sch_pid) { if (tcsetpgrp (s48_extract_fixnum (sch_fd), s48_extract_fixnum (sch_pid)) == -1) s48_raise_os_error_2 (errno, sch_fd, sch_pid); return S48_UNSPECIFIC; } s48_value sch_tcgetpgrp (s48_value sch_fd) { int ret = tcgetpgrp (s48_extract_fixnum (sch_fd)); if (ret == -1) s48_raise_os_error_1 (errno, sch_fd); return s48_enter_integer (ret); } /*****************************************************************************/ s48_value open_ctty(s48_value sch_ttyname, s48_value sch_flags) { int fd = open(s48_extract_string (sch_ttyname), s48_extract_integer (sch_flags)); #if defined(TIOCSCTTY) && !defined(CIBAUD) && !defined(__hpux) /* 4.3+BSD way to acquire control tty. !CIBAUD rules out SunOS. ** This code stolen from Steven's *Advanced Prog. in the Unix Env.* */ if( (fd >= 0) && (ioctl(fd, TIOCSCTTY, (char *) 0) < 0) ) { int e = errno; close(fd); s48_raise_os_error_2 (e, sch_ttyname, sch_flags); } #endif if (fd == -1) s48_raise_os_error_2 (errno, sch_ttyname, sch_flags); return s48_enter_fixnum (fd); } s48_value sch_isatty (s48_value sch_fd) { return ((isatty (s48_extract_fixnum (sch_fd))) ? S48_TRUE : S48_FALSE); } s48_value sch_ttyname (s48_value sch_fd) { char* ret = ttyname (s48_extract_fixnum (sch_fd)); if (ret == NULL) s48_raise_os_error_1 (errno, sch_fd); return s48_enter_string (ret); } s48_value scm_ctermid() { char* ret = ctermid(0); if (ret == NULL) s48_raise_os_error (errno); return s48_enter_string (ret); } void s48_init_tty(void) { S48_EXPORT_FUNCTION(scheme_tcgetattr); S48_EXPORT_FUNCTION(scheme_tcsetattr); S48_EXPORT_FUNCTION(sch_tcsendbreak); S48_EXPORT_FUNCTION(sch_tcdrain); S48_EXPORT_FUNCTION(sch_tcflush); S48_EXPORT_FUNCTION(sch_tcflow); S48_EXPORT_FUNCTION(sch_tcsetpgrp); S48_EXPORT_FUNCTION(sch_tcgetpgrp); S48_EXPORT_FUNCTION(open_ctty); S48_EXPORT_FUNCTION(sch_isatty); S48_EXPORT_FUNCTION(sch_ttyname); S48_EXPORT_FUNCTION(scm_ctermid); }