X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftinfo%2Flib_setup.c;h=434d5633a7dcb8388e8eceb43b82c1b233c0d4b0;hp=6a69493bea5bd18738c5bc182972ce8fce4c68f8;hb=HEAD;hpb=46722468f47c2b77b3987729b4bcf2321cccfd01 diff --git a/ncurses/tinfo/lib_setup.c b/ncurses/tinfo/lib_setup.c index 6a69493b..99097f00 100644 --- a/ncurses/tinfo/lib_setup.c +++ b/ncurses/tinfo/lib_setup.c @@ -1,5 +1,6 @@ /**************************************************************************** - * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. * + * Copyright 2018-2023,2024 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 * @@ -29,26 +30,26 @@ /**************************************************************************** * Author: Zeyd M. Ben-Halim 1992,1995 * * and: Eric S. Raymond * + * and: Thomas E. Dickey 1996-on * + * and: Juergen Pfeifer 2009 * ****************************************************************************/ /* * Terminal setup routines common to termcap and terminfo: * * use_env(bool) + * use_tioctl(bool) * setupterm(char *, int, int *) */ #include #include /* for MAX_NAME_SIZE */ -#include -#if SVR4_TERMIO && !defined(_POSIX_SOURCE) -#define _POSIX_SOURCE +#if HAVE_LOCALE_H +#include #endif -#include /* lines, columns, cur_term */ - -MODULE_ID("$Id: lib_setup.c,v 1.70 2002/10/12 21:50:18 tom Exp $") +MODULE_ID("$Id: lib_setup.c,v 1.240 2024/04/20 17:04:05 tom Exp $") /**************************************************************************** * @@ -65,13 +66,17 @@ MODULE_ID("$Id: lib_setup.c,v 1.70 2002/10/12 21:50:18 tom Exp $") #endif #if NEED_PTEM_H - /* On SCO, they neglected to define struct winsize in termios.h -- it's only + /* On SCO, they neglected to define struct winsize in termios.h -- it is only * in termio.h and ptem.h (the former conflicts with other definitions). */ # include # include #endif +#if HAVE_LANGINFO_CODESET +#include +#endif + /* * SCO defines TIOCGSIZE and the corresponding struct. Other systems (SunOS, * Solaris, IRIX) define TIOCGWINSZ and struct winsize. @@ -90,183 +95,583 @@ MODULE_ID("$Id: lib_setup.c,v 1.70 2002/10/12 21:50:18 tom Exp $") # endif #endif -static int _use_env = TRUE; +/* + * Reduce explicit use of "cur_term" global variable. + */ +#undef CUR +#define CUR TerminalType(termp). + +/* + * Wrap global variables in this module. + */ +#if USE_REENTRANT + +NCURSES_EXPORT(char *) +NCURSES_PUBLIC_VAR(ttytype) (void) +{ + static char empty[] = ""; + char *result = empty; + +#if NCURSES_SP_FUNCS + if (CURRENT_SCREEN) { + TERMINAL *termp = TerminalOf(CURRENT_SCREEN); + if (termp != 0) { + result = TerminalType(termp).term_names; + } + } +#else + if (cur_term != 0) { + result = TerminalType(cur_term).term_names; + } +#endif + return result; +} + +NCURSES_EXPORT(int *) +_nc_ptr_Lines(SCREEN *sp) +{ + return ptrLines(sp); +} + +NCURSES_EXPORT(int) +NCURSES_PUBLIC_VAR(LINES) (void) +{ + return *_nc_ptr_Lines(CURRENT_SCREEN); +} + +NCURSES_EXPORT(int *) +_nc_ptr_Cols(SCREEN *sp) +{ + return ptrCols(sp); +} + +NCURSES_EXPORT(int) +NCURSES_PUBLIC_VAR(COLS) (void) +{ + return *_nc_ptr_Cols(CURRENT_SCREEN); +} + +NCURSES_EXPORT(int *) +_nc_ptr_Tabsize(SCREEN *sp) +{ + return ptrTabsize(sp); +} + +NCURSES_EXPORT(int) +NCURSES_PUBLIC_VAR(TABSIZE) (void) +{ + return *_nc_ptr_Tabsize(CURRENT_SCREEN); +} +#else +NCURSES_EXPORT_VAR(char) ttytype[NAMESIZE] = ""; +NCURSES_EXPORT_VAR(int) LINES = 0; +NCURSES_EXPORT_VAR(int) COLS = 0; +NCURSES_EXPORT_VAR(int) TABSIZE = 8; +#endif + +#if NCURSES_EXT_FUNCS +NCURSES_EXPORT(int) +NCURSES_SP_NAME(set_tabsize) (NCURSES_SP_DCLx int value) +{ + int code = OK; + if (value <= 0) { + code = ERR; + } else { +#if USE_REENTRANT + if (SP_PARM) { + SP_PARM->_TABSIZE = value; + } else { + code = ERR; + } +#else + (void) SP_PARM; + TABSIZE = value; +#endif + } + return code; +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(int) +set_tabsize(int value) +{ + return NCURSES_SP_NAME(set_tabsize) (CURRENT_SCREEN, value); +} +#endif +#endif /* NCURSES_EXT_FUNCS */ + +#if USE_SIGWINCH +/* + * If we have a pending SIGWINCH, set the flag in each screen. + */ +NCURSES_EXPORT(int) +_nc_handle_sigwinch(SCREEN *sp) +{ + SCREEN *scan; + + if (_nc_globals.have_sigwinch) { + _nc_globals.have_sigwinch = 0; + + for (each_screen(scan)) { + scan->_sig_winch = TRUE; + } + } + + return (sp ? sp->_sig_winch : 0); +} + +#endif + +NCURSES_EXPORT(void) +NCURSES_SP_NAME(use_env) (NCURSES_SP_DCLx bool f) +{ + START_TRACE(); + T((T_CALLED("use_env(%p,%d)"), (void *) SP_PARM, (int) f)); +#if NCURSES_SP_FUNCS + if (IsPreScreen(SP_PARM)) { + SP_PARM->_use_env = f; + } +#else + _nc_prescreen.use_env = f; +#endif + returnVoid; +} -static void do_prototype(void); +NCURSES_EXPORT(void) +NCURSES_SP_NAME(use_tioctl) (NCURSES_SP_DCLx bool f) +{ + START_TRACE(); + T((T_CALLED("use_tioctl(%p,%d)"), (void *) SP_PARM, (int) f)); +#if NCURSES_SP_FUNCS + if (IsPreScreen(SP_PARM)) { + SP_PARM->use_tioctl = f; + } +#else + _nc_prescreen.use_tioctl = f; +#endif + returnVoid; +} +#if NCURSES_SP_FUNCS NCURSES_EXPORT(void) use_env(bool f) { - T((T_CALLED("use_env()"))); - _use_env = f; + START_TRACE(); + T((T_CALLED("use_env(%d)"), (int) f)); + _nc_prescreen.use_env = f; returnVoid; } -NCURSES_EXPORT_VAR(int) LINES = 0; -NCURSES_EXPORT_VAR(int) COLS = 0; -NCURSES_EXPORT_VAR(int) TABSIZE = 0; +NCURSES_EXPORT(void) +use_tioctl(bool f) +{ + START_TRACE(); + T((T_CALLED("use_tioctl(%d)"), (int) f)); + _nc_prescreen.use_tioctl = f; + returnVoid; +} +#endif +#if !(defined(USE_TERM_DRIVER) || defined(EXP_WIN32_DRIVER)) static void -_nc_get_screensize(int *linep, int *colp) -/* Obtain lines/columns values from the environment and/or terminfo entry */ +_nc_default_screensize(TERMINAL *termp, int *linep, int *colp) { - /* figure out the size of the screen */ - T(("screen size: terminfo lines = %d columns = %d", lines, columns)); - - if (!_use_env) { + /* if we can't get dynamic info about the size, use static */ + if (*linep <= 0) { *linep = (int) lines; + } + if (*colp <= 0) { *colp = (int) columns; - } else { /* usually want to query LINES and COLUMNS from environment */ - int value; + } + + /* the ultimate fallback, assume fixed 24x80 size */ + if (*linep <= 0) { + *linep = 24; + } + if (*colp <= 0) { + *colp = 80; + } +} + +#if defined(USE_CHECK_SIZE) && defined(user6) && defined(user7) +static const char * +skip_csi(const char *value) +{ + if (UChar(*value) == CSI_CHR) { + ++value; + } else if (*value == ESC_CHR && value[1] == L_BLOCK) { + value += 2; + } + return value; +} + +static bool +is_expected(const char *value, const char *expected) +{ + bool result = FALSE; + if (VALID_STRING(value)) { + const char *skipped = skip_csi(value); + if (skipped != value) { + if (!strcmp(skipped, expected)) + result = TRUE; + } + } + return result; +} - *linep = *colp = 0; +static bool +get_position(TERMINAL *termp, int fd, int *row, int *col) +{ + bool result = FALSE; + size_t need = strlen(user7); + int have; + + have = (int) write(fd, user7, need); + + if (have == (int) need) { + int y, x; + char buf[20]; + char *s; + char cc; + const char *skipped; + int scanned; - /* first, look for environment variables */ - if ((value = _nc_getenv_num("LINES")) > 0) { - *linep = value; + s = memset(buf, '\0', sizeof(buf)); + do { + size_t ask = (sizeof(buf) - 1 - (size_t) (s - buf)); + int got = (int) read(fd, s, ask); + if (got == 0) + break; + s += got; + *s = '\0'; + } while (strchr(buf, 'R') == NULL && (size_t) (s + 1 - buf) < sizeof(buf)); + T(("CPR response %s", _nc_visbuf(buf))); + skipped = skip_csi(buf); + cc = '\0'; + if (skipped != buf + && *skipped != '\0' + && (scanned = sscanf(skip_csi(buf), "%d;%d%c", &y, &x, &cc)) == 3 + && (cc == 'R')) { + *row = y; + *col = x; + result = TRUE; } - if ((value = _nc_getenv_num("COLUMNS")) > 0) { - *colp = value; + } + T(("get_position %s %d,%d", result ? "OK" : "ERR", *row, *col)); + return result; +} + +static bool +set_position(NCURSES_SP_DCLx TERMINAL *termp, int row, int col) +{ + bool result; + char *actual = TIPARM_2(cursor_address, row, col); + T((T_CALLED("set_position %d,%d)"), row, col)); +#if NCURSES_SP_FUNCS + result = (NCURSES_SP_NAME(_nc_putp) (NCURSES_SP_ARGx "set_position", + actual) == OK); + NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG); +#else + /* This does not support padding because without sp-funcs, we have only + * the interface using stdio, but we are not guaranteed that Filedes + * is the same as fileno(stdout). + */ + result = FALSE; + if (actual != NULL) { + size_t want = strlen(actual); + int have = (int) write(termp->Filedes, actual, want); + result = ((int) want == have); + } +#endif + returnBool(result); +} + +/* + * This is a little more complicated than one might expect, because we do this + * before setting up the terminal modes, etc., and cannot use the timeout or + * buffering functions. + * + * We check if the terminal description has the ECMA-48 CPR (cursor position + * report) in u7 and the response in u6. The two variations of is_expected() + * cover the termcap style and terminfo style, and are equivalent as far as we + * are concerned. For analyzing the response, we wait (a short time) for 'R' + * to be echoed, and then check if we received two integers in the response. + * + * In principle, this could run on "any" ECMA-48 terminal, but in practice, + * there is a scenario using GNU screen where it uses ncurses with a partially + * configured pseudo-terminal, and the CPR response goes to the wrong place. + * So we do a simple check to exclude pseudo-terminals. + */ +static void +_nc_check_screensize(SCREEN *sp, TERMINAL *termp, int *linep, int *colp) +{ + int fd = termp->Filedes; + TTY saved; + const char *name = NULL; + + if (IsRealTty(fd, name) + && VALID_STRING(cursor_address) + && is_expected(user7, "6n") + && (is_expected(user6, "%i%d;%dR") || + is_expected(user6, "%i%p1%d;%p2%dR")) + && GET_TTY(fd, &saved) == OK) { + int current_y = -1, current_x = -1; + int updated_y = -1, updated_x = -1; + TTY alter = saved; + +#if NCURSES_SP_FUNCS + if (sp == NULL) { + sp = new_prescr(); + sp->_term = termp; + NCURSES_SP_NAME(baudrate) (NCURSES_SP_ARG); } - T(("screen size: environment LINES = %d COLUMNS = %d", *linep, *colp)); +#else + (void) sp; +#endif + T(("trying CPR (u7/u6) with %s", name)); + alter.c_lflag &= (unsigned) ~(ECHO | ICANON | ISIG | IEXTEN); + alter.c_iflag &= (unsigned) ~(IXON | BRKINT | PARMRK); + alter.c_cc[VMIN] = 0; + alter.c_cc[VTIME] = 1; + SET_TTY(fd, &alter); + + if (get_position(termp, fd, ¤t_y, ¤t_x) + && set_position(NCURSES_SP_ARGx termp, 9999, 9999) + && get_position(termp, fd, &updated_y, &updated_x)) { + *linep = updated_y; + *colp = updated_x; + set_position(NCURSES_SP_ARGx termp, current_y, current_x); + } + /* restore tty modes */ + SET_TTY(fd, &saved); + } else { + T(("NOT trying CPR with fd %d (%s): %s", + fd, NonNull(name), NC_ISATTY(fd) ? "tty" : "not a tty")); + } + + _nc_default_screensize(termp, linep, colp); +} +#else /* !USE_CHECK_SIZE */ +#define _nc_check_screensize(sp, termp, linep, colp) /* nothing */ +#endif +#endif /* !(defined(USE_TERM_DRIVER) || defined(EXP_WIN32_DRIVER)) */ + +NCURSES_EXPORT(void) +_nc_get_screensize(SCREEN *sp, +#ifdef USE_TERM_DRIVER + TERMINAL *termp, +#endif + int *linep, int *colp) +/* Obtain lines/columns values from the environment and/or terminfo entry */ +{ +#ifdef USE_TERM_DRIVER + TERMINAL_CONTROL_BLOCK *TCB; + int my_tabsize; + + assert(termp != 0 && linep != 0 && colp != 0); + TCB = (TERMINAL_CONTROL_BLOCK *) termp; + + my_tabsize = TCB->info.tabsize; + TCB->drv->td_size(TCB, linep, colp); + +#if USE_REENTRANT + if (sp != 0) { + sp->_TABSIZE = my_tabsize; + } +#else + (void) sp; + TABSIZE = my_tabsize; +#endif + T(("TABSIZE = %d", my_tabsize)); +#else /* !USE_TERM_DRIVER */ + TERMINAL *termp = cur_term; + int my_tabsize; + bool useEnv = _nc_prescreen.use_env; + bool useTioctl = _nc_prescreen.use_tioctl; + + T((T_CALLED("_nc_get_screensize (%p)"), (void *) sp)); +#ifdef EXP_WIN32_DRIVER + /* If we are here, then Windows console is used in terminfo mode. + We need to figure out the size using the console API + */ + _nc_console_size(linep, colp); + T(("screen size: winconsole lines = %d columns = %d", *linep, *colp)); +#else + /* figure out the size of the screen */ + T(("screen size: terminfo lines = %d columns = %d", lines, columns)); + + *linep = (int) lines; + *colp = (int) columns; +#endif + +#if NCURSES_SP_FUNCS + if (sp) { + useEnv = sp->_use_env; + useTioctl = sp->use_tioctl; + } +#endif + + T(("useEnv:%d useTioctl:%d", useEnv, useTioctl)); + if (useEnv || useTioctl) { #ifdef __EMX__ - if (*linep <= 0 || *colp <= 0) { + { int screendata[2]; _scrsize(screendata); *colp = screendata[0]; - *linep = screendata[1]; + *linep = ((sp != 0 && sp->_filtered) + ? 1 + : screendata[1]); T(("EMX screen size: environment LINES = %d COLUMNS = %d", *linep, *colp)); } #endif #if HAVE_SIZECHANGE - /* if that didn't work, maybe we can try asking the OS */ - if (*linep <= 0 || *colp <= 0) { - if (isatty(cur_term->Filedes)) { - STRUCT_WINSIZE size; - - errno = 0; - do { - if (ioctl(cur_term->Filedes, IOCTL_WINSIZE, &size) < 0 - && errno != EINTR) - goto failure; - } while - (errno == EINTR); + /* try asking the OS */ + if (NC_ISATTY(cur_term->Filedes)) { + STRUCT_WINSIZE size; - /* - * Solaris lets users override either dimension with an - * environment variable. - */ - if (*linep <= 0) - *linep = WINSIZE_ROWS(size); - if (*colp <= 0) + errno = 0; + do { + if (ioctl(cur_term->Filedes, IOCTL_WINSIZE, &size) >= 0) { + *linep = ((sp != 0 && sp->_filtered) + ? 1 + : WINSIZE_ROWS(size)); *colp = WINSIZE_COLS(size); - } - /* FALLTHRU */ - failure:; + T(("SYS screen size: environment LINES = %d COLUMNS = %d", + *linep, *colp)); + break; + } + } while + (errno == EINTR); } #endif /* HAVE_SIZECHANGE */ - /* if we can't get dynamic info about the size, use static */ - if (*linep <= 0) { - *linep = (int) lines; - } - if (*colp <= 0) { - *colp = (int) columns; - } + if (useEnv) { + int value; - /* the ultimate fallback, assume fixed 24x80 size */ - if (*linep <= 0) { - *linep = 24; - } - if (*colp <= 0) { - *colp = 80; + if (useTioctl) { + /* + * If environment variables are used, update them. + */ + if ((sp == 0 || !sp->_filtered) && _nc_getenv_num("LINES") > 0) { + _nc_setenv_num("LINES", *linep); + } + if (_nc_getenv_num("COLUMNS") > 0) { + _nc_setenv_num("COLUMNS", *colp); + } + } + + /* + * Finally, look for environment variables. + * + * Solaris lets users override either dimension with an environment + * variable. + */ + if ((value = _nc_getenv_num("LINES")) > 0) { + *linep = value; + T(("screen size: environment LINES = %d", *linep)); + } + if ((value = _nc_getenv_num("COLUMNS")) > 0) { + *colp = value; + T(("screen size: environment COLUMNS = %d", *colp)); + } + + _nc_default_screensize(termp, linep, colp); + } else { + _nc_check_screensize(sp, termp, linep, colp); } /* * Put the derived values back in the screen-size caps, so * tigetnum() and tgetnum() will do the right thing. */ - lines = (short) (*linep); - columns = (short) (*colp); + lines = (NCURSES_INT2) (*linep); + columns = (NCURSES_INT2) (*colp); +#if NCURSES_EXT_NUMBERS +#define OldNumber(termp,name) \ + (termp)->type.Numbers[(&name - (termp)->type2.Numbers)] + OldNumber(termp, lines) = (short) (*linep); + OldNumber(termp, columns) = (short) (*colp); +#endif + } else { + _nc_check_screensize(sp, termp, linep, colp); } T(("screen size is %dx%d", *linep, *colp)); if (VALID_NUMERIC(init_tabs)) - TABSIZE = (int) init_tabs; + my_tabsize = (int) init_tabs; else - TABSIZE = 8; - T(("TABSIZE = %d", TABSIZE)); + my_tabsize = 8; +#if USE_REENTRANT + if (sp != 0) + sp->_TABSIZE = my_tabsize; +#else + TABSIZE = my_tabsize; +#endif + T(("TABSIZE = %d", TABSIZE)); + returnVoid; +#endif /* USE_TERM_DRIVER */ } #if USE_SIZECHANGE NCURSES_EXPORT(void) -_nc_update_screensize(void) +_nc_update_screensize(SCREEN *sp) { - int my_lines, my_cols; + int new_lines; + int new_cols; - _nc_get_screensize(&my_lines, &my_cols); - if (SP != 0 && SP->_resize != 0) - SP->_resize(my_lines, my_cols); -} +#ifdef USE_TERM_DRIVER + int old_lines; + int old_cols; + + assert(sp != 0); + + CallDriver_2(sp, td_getsize, &old_lines, &old_cols); + +#else + TERMINAL *termp = cur_term; + int old_lines = lines; + int old_cols = columns; #endif + if (sp != 0) { + TINFO_GET_SIZE(sp, sp->_term, &new_lines, &new_cols); + /* + * See is_term_resized() and resizeterm(). + * We're doing it this way because those functions belong to the upper + * ncurses library, while this resides in the lower terminfo library. + */ + if (sp->_resize != 0) { + if ((new_lines != old_lines) || (new_cols != old_cols)) { + sp->_resize(NCURSES_SP_ARGx new_lines, new_cols); + } else if (sp->_sig_winch && (sp->_ungetch != 0)) { + sp->_ungetch(SP_PARM, KEY_RESIZE); /* so application can know this */ + } + sp->_sig_winch = FALSE; + } + } +} +#endif /* USE_SIZECHANGE */ + /**************************************************************************** * * Terminal setup * ****************************************************************************/ -#define ret_error(code, fmt, arg) if (errret) {\ - *errret = code;\ - returnCode(ERR);\ - } else {\ - fprintf(stderr, fmt, arg);\ - exit(EXIT_FAILURE);\ - } - -#define ret_error0(code, msg) if (errret) {\ - *errret = code;\ - returnCode(ERR);\ - } else {\ - fprintf(stderr, msg);\ - exit(EXIT_FAILURE);\ - } - -#if USE_DATABASE || USE_TERMCAP -static int -grab_entry(const char *const tn, TERMTYPE * const tp) -/* return 1 if entry found, 0 if not found, -1 if database not accessible */ +#if NCURSES_USE_DATABASE || NCURSES_USE_TERMCAP +/* + * Return 1 if entry found, 0 if not found, -1 if database not accessible, + * just like tgetent(). + */ +int +_nc_setup_tinfo(const char *const tn, TERMTYPE2 *const tp) { char filename[PATH_MAX]; - int status; - - /* - * $TERM shouldn't contain pathname delimiters. - */ - if (strchr(tn, '/')) - return 0; - -#if USE_DATABASE - if ((status = _nc_read_entry(tn, filename, tp)) != 1) { - -#if !PURE_TERMINFO - /* - * Try falling back on the termcap file. - * Note: allowing this call links the entire terminfo/termcap - * compiler into the startup code. It's preferable to build a - * real terminfo database and use that. - */ - status = _nc_read_termcap_entry(tn, tp); -#endif /* PURE_TERMINFO */ - - } -#else - status = _nc_read_termcap_entry(tn, tp); -#endif + int status = _nc_read_entry2(tn, filename, tp); /* * If we have an entry, force all of the cancelled strings to null @@ -274,8 +679,9 @@ grab_entry(const char *const tn, TERMTYPE * const tp) * (The terminfo compiler bypasses this logic, since it must know if * a string is cancelled, for merging entries). */ - if (status == 1) { - int n; + if (status == TGETENT_YES) { + unsigned n; + T(("_nc_setup_tinfo - resetting invalid booleans/strings")); for_each_boolean(n, tp) { if (!VALID_BOOLEAN(tp->Booleans[n])) tp->Booleans[n] = FALSE; @@ -289,149 +695,517 @@ grab_entry(const char *const tn, TERMTYPE * const tp) } #endif -NCURSES_EXPORT_VAR(char) ttytype[NAMESIZE] = ""; - /* - * setupterm(termname, Filedes, errret) - * - * Find and read the appropriate object file for the terminal - * Make cur_term point to the structure. - * + * Take the real command character out of the CC environment variable + * and substitute it in for the prototype given in 'command_character'. */ - -NCURSES_EXPORT(int) -setupterm(NCURSES_CONST char *tname, int Filedes, int *errret) +void +_nc_tinfo_cmdch(TERMINAL *termp, int proto) { - struct term *term_ptr; - int status; + char *tmp; - START_TRACE(); - T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, errret)); + /* + * Only use the character if the string is a single character, + * since it is fairly common for developers to set the C compiler + * name as an environment variable - using the same symbol. + */ + if ((tmp = getenv("CC")) != 0 && strlen(tmp) == 1) { + unsigned i; + char CC = *tmp; - if (tname == 0) { - tname = getenv("TERM"); - if (tname == 0 || *tname == '\0') { - ret_error0(-1, "TERM environment variable not set.\n"); + for_each_string(i, &(termp->type)) { + tmp = termp->type.Strings[i]; + if (VALID_STRING(tmp)) { + for (; *tmp; ++tmp) { + if (UChar(*tmp) == proto) + *tmp = CC; + } + } } } - if (strlen(tname) > MAX_NAME_SIZE) { - ret_error(-1, "TERM environment must be <= %d characters.\n", - MAX_NAME_SIZE); - } +} - T(("your terminal name is %s", tname)); +/* + * Find the locale which is in effect. + */ +NCURSES_EXPORT(char *) +_nc_get_locale(void) +{ + char *env; +#if HAVE_LOCALE_H + /* + * This is preferable to using getenv() since it ensures that we are using + * the locale which was actually initialized by the application. + */ + env = setlocale(LC_CTYPE, 0); +#else + if (((env = getenv("LANG")) != 0 && *env != '\0') + || ((env = getenv("LC_CTYPE")) != 0 && *env != '\0') + || ((env = getenv("LC_ALL")) != 0 && *env != '\0')) { + ; + } +#endif + T(("_nc_get_locale %s", _nc_visbuf(env))); + return env; +} - term_ptr = typeCalloc(TERMINAL, 1); +/* + * Check if we are running in a UTF-8 locale. + */ +NCURSES_EXPORT(int) +_nc_unicode_locale(void) +{ + static bool initialized = FALSE; + static int result = 0; - if (term_ptr == 0) { - ret_error0(-1, "Not enough memory to create terminal structure.\n"); - } -#if USE_DATABASE || USE_TERMCAP - status = grab_entry(tname, &term_ptr->type); + if (!initialized) { +#if defined(_NC_WINDOWS) && USE_WIDEC_SUPPORT + result = 1; +#elif HAVE_LANGINFO_CODESET + char *env = nl_langinfo(CODESET); + result = !strcmp(env, "UTF-8"); + T(("_nc_unicode_locale(%s) ->%d", env, result)); #else - status = 0; + char *env = _nc_get_locale(); + if (env != 0) { + if (strstr(env, ".UTF-8") != 0) { + result = 1; + T(("_nc_unicode_locale(%s) ->%d", env, result)); + } + } #endif + initialized = TRUE; + } + return result; +} - /* try fallback list if entry on disk */ - if (status != 1) { - const TERMTYPE *fallback = _nc_fallback(tname); +#define CONTROL_N(s) ((s) != 0 && strstr(s, "\016") != 0) +#define CONTROL_O(s) ((s) != 0 && strstr(s, "\017") != 0) - if (fallback) { - term_ptr->type = *fallback; - status = 1; +/* + * Check for known broken cases where a UTF-8 locale breaks the alternate + * character set. + */ +NCURSES_EXPORT(int) +_nc_locale_breaks_acs(TERMINAL *termp) +{ + const char *env_name = "NCURSES_NO_UTF8_ACS"; + const char *env; + int value; + int result = 0; + + T((T_CALLED("_nc_locale_breaks_acs:%d"), result)); + if (getenv(env_name) != 0) { + result = _nc_getenv_num(env_name); + } else if ((value = tigetnum("U8")) >= 0) { + result = value; /* use extension feature */ + } else if ((env = getenv("TERM")) != 0) { + if (strstr(env, "linux")) { + result = 1; /* always broken */ + } else if (strstr(env, "screen") != 0 + && ((env = getenv("TERMCAP")) != 0 + && strstr(env, "screen") != 0) + && strstr(env, "hhII00") != 0) { + if (CONTROL_N(enter_alt_charset_mode) || + CONTROL_O(enter_alt_charset_mode) || + CONTROL_N(set_attributes) || + CONTROL_O(set_attributes)) { + result = 1; + } } } + returnCode(result); +} - if (status == -1) { - ret_error0(-1, "terminals database is inaccessible\n"); - } else if (status == 0) { - ret_error(0, "'%s': unknown terminal type.\n", tname); - } +NCURSES_EXPORT(int) +TINFO_SETUP_TERM(TERMINAL **tp, + const char *tname, + int Filedes, + int *errret, + int reuse) +{ +#ifdef USE_TERM_DRIVER + TERMINAL_CONTROL_BLOCK *TCB = 0; +#endif + TERMINAL *termp; + SCREEN *sp = 0; + char *myname; + int code = ERR; - /* - * Improve on SVr4 curses. If an application mixes curses and termcap - * calls, it may call both initscr and tgetent. This is not really a - * good thing to do, but can happen if someone tries using ncurses with - * the readline library. The problem we are fixing is that when - * tgetent calls setupterm, the resulting Ottyb struct in cur_term is - * zeroed. A subsequent call to endwin uses the zeroed terminal - * settings rather than the ones saved in initscr. So we check if - * cur_term appears to contain terminal settings for the same output - * file as our current call - and copy those terminal settings. (SVr4 - * curses does not do this, however applications that are working - * around the problem will still work properly with this feature). - */ - if (cur_term != 0) { - if (cur_term->Filedes == Filedes) - term_ptr->Ottyb = cur_term->Ottyb; - } + START_TRACE(); - set_curterm(term_ptr); +#ifdef USE_TERM_DRIVER + T((T_CALLED("_nc_setupterm_ex(%p,%s,%d,%p)"), + (void *) tp, _nc_visbuf(tname), Filedes, (void *) errret)); - if (command_character && getenv("CC")) - do_prototype(); + if (tp == 0) { + ret_error0(TGETENT_ERR, + "Invalid parameter, internal error.\n"); + } else + termp = *tp; +#else + termp = cur_term; + T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, (void *) errret)); +#endif - strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1); - ttytype[NAMESIZE - 1] = '\0'; + if (tname == 0) { + tname = getenv("TERM"); +#if defined(EXP_WIN32_DRIVER) + if (!VALID_TERM_ENV(tname, NO_TERMINAL)) { + T(("Failure with TERM=%s", NonNull(tname))); + ret_error0(TGETENT_ERR, "TERM environment variable not set.\n"); + } +#elif defined(USE_TERM_DRIVER) + if (!NonEmpty(tname)) + tname = "unknown"; +#else + if (!NonEmpty(tname)) { + T(("Failure with TERM=%s", NonNull(tname))); + ret_error0(TGETENT_ERR, "TERM environment variable not set.\n"); + } +#endif + } + myname = strdup(tname); + if (myname == NULL || strlen(myname) > MAX_NAME_SIZE) { + ret_error(TGETENT_ERR, + "TERM environment must be 1..%d characters.\n", + MAX_NAME_SIZE, + free(myname)); + } + + T(("your terminal name is %s", myname)); /* * Allow output redirection. This is what SVr3 does. If stdout is * directed to a file, screen updates go to standard error. */ - if (Filedes == STDOUT_FILENO && !isatty(Filedes)) + if (Filedes == STDOUT_FILENO && !NC_ISATTY(Filedes)) Filedes = STDERR_FILENO; - cur_term->Filedes = Filedes; +#if defined(EXP_WIN32_DRIVER) + if (Filedes != STDERR_FILENO && NC_ISATTY(Filedes)) + _setmode(Filedes, _O_BINARY); +#endif /* - * If an application calls setupterm() rather than initscr() or newterm(), - * we will not have the def_prog_mode() call in _nc_setupscreen(). Do it - * now anyway, so we can initialize the baudrate. + * Check if we have already initialized to use this terminal. If so, we + * do not need to re-read the terminfo entry, or obtain TTY settings. + * + * This is an improvement on SVr4 curses. If an application mixes curses + * and termcap calls, it may call both initscr and tgetent. This is not + * really a good thing to do, but can happen if someone tries using ncurses + * with the readline library. The problem we are fixing is that when + * tgetent calls setupterm, the resulting Ottyb struct in cur_term is + * zeroed. A subsequent call to endwin uses the zeroed terminal settings + * rather than the ones saved in initscr. So we check if cur_term appears + * to contain terminal settings for the same output file as our current + * call - and copy those terminal settings. (SVr4 curses does not do this, + * however applications that are working around the problem will still work + * properly with this feature). */ - if (isatty(Filedes)) { - def_prog_mode(); - baudrate(); + if (reuse + && (termp != 0) + && termp->Filedes == Filedes + && termp->_termname != 0 + && !strcmp(termp->_termname, myname) + && _nc_name_match(TerminalType(termp).term_names, myname, "|")) { + T(("reusing existing terminal information and mode-settings")); + code = OK; +#ifdef USE_TERM_DRIVER + TCB = (TERMINAL_CONTROL_BLOCK *) termp; +#endif + } else { +#ifdef USE_TERM_DRIVER + TERMINAL_CONTROL_BLOCK *my_tcb; + termp = 0; + if ((my_tcb = typeCalloc(TERMINAL_CONTROL_BLOCK, 1)) != 0) + termp = &(my_tcb->term); +#else + int status; + + termp = typeCalloc(TERMINAL, 1); +#endif + if (termp == 0) { + ret_error1(TGETENT_ERR, + "Not enough memory to create terminal structure.\n", + myname, free(myname)); + } + ++_nc_globals.terminal_count; +#if HAVE_SYSCONF + { + long limit; +#ifdef LINE_MAX + limit = LINE_MAX; +#else + limit = _nc_globals.getstr_limit; +#endif +#ifdef _SC_LINE_MAX + if (limit < sysconf(_SC_LINE_MAX)) + limit = sysconf(_SC_LINE_MAX); +#endif + if (_nc_globals.getstr_limit < (int) limit) + _nc_globals.getstr_limit = (int) limit; + } +#endif /* HAVE_SYSCONF */ + T(("using %d for getstr limit", _nc_globals.getstr_limit)); + +#ifdef USE_TERM_DRIVER + INIT_TERM_DRIVER(); + /* + * _nc_get_driver() will call td_CanHandle() for each driver, and win_driver + * needs file descriptor to do the test, so set it before calling. + */ + termp->Filedes = (short) Filedes; + TCB = (TERMINAL_CONTROL_BLOCK *) termp; + code = _nc_globals.term_driver(TCB, myname, errret); + if (code == OK) { + termp->_termname = strdup(myname); + } else { + ret_error1(errret ? *errret : TGETENT_ERR, + "Could not find any driver to handle terminal.\n", + myname, free(myname)); + } +#else +#if NCURSES_USE_DATABASE || NCURSES_USE_TERMCAP + status = _nc_setup_tinfo(myname, &TerminalType(termp)); + T(("_nc_setup_tinfo returns %d", status)); +#else + T(("no database available")); + status = TGETENT_NO; +#endif + + /* try fallback list if entry on disk */ + if (status != TGETENT_YES) { + const TERMTYPE2 *fallback = _nc_fallback2(myname); + + if (fallback) { + T(("found fallback entry")); + _nc_copy_termtype2(&(TerminalType(termp)), fallback); + status = TGETENT_YES; + } + } + + if (status != TGETENT_YES) { + del_curterm(termp); + if (status == TGETENT_ERR) { + free(myname); + ret_error0(status, "terminals database is inaccessible\n"); + } else if (status == TGETENT_NO) { + ret_error1(status, "unknown terminal type.\n", + myname, free(myname)); + } else { + free(myname); + ret_error0(status, "unexpected return-code\n"); + } + } +#if NCURSES_EXT_NUMBERS + _nc_export_termtype2(&termp->type, &TerminalType(termp)); +#endif +#if !USE_REENTRANT + save_ttytype(termp); +#endif + + termp->Filedes = (short) Filedes; + termp->_termname = strdup(myname); + + set_curterm(termp); + + if (VALID_STRING(command_character)) + _nc_tinfo_cmdch(termp, UChar(*command_character)); + + /* + * If an application calls setupterm() rather than initscr() or + * newterm(), we will not have the def_prog_mode() call in + * _nc_setupscreen(). Do it now anyway, so we can initialize the + * baudrate. Also get the shell-mode so that erasechar() works. + */ + if (NC_ISATTY(Filedes)) { + NCURSES_SP_NAME(def_shell_mode) (NCURSES_SP_ARG); + NCURSES_SP_NAME(def_prog_mode) (NCURSES_SP_ARG); + NCURSES_SP_NAME(baudrate) (NCURSES_SP_ARG); + } + code = OK; +#endif } - _nc_get_screensize(&LINES, &COLS); +#ifdef USE_TERM_DRIVER + *tp = termp; + NCURSES_SP_NAME(set_curterm) (sp, termp); + TCB->drv->td_init(TCB); +#else + sp = SP; +#endif - if (errret) - *errret = 1; + /* + * We should always check the screensize, just in case. + */ + TINFO_GET_SIZE(sp, termp, ptrLines(sp), ptrCols(sp)); - T((T_CREATE("screen %s %dx%d"), tname, LINES, COLS)); + if (errret) + *errret = TGETENT_YES; +#ifndef USE_TERM_DRIVER if (generic_type) { - ret_error(0, "'%s': I need something more specific.\n", tname); + /* + * BSD 4.3's termcap contains mis-typed "gn" for wy99. Do a sanity + * check before giving up. + */ + if ((VALID_STRING(cursor_address) + || (VALID_STRING(cursor_down) && VALID_STRING(cursor_home))) + && VALID_STRING(clear_screen)) { + ret_error1(TGETENT_YES, "terminal is not really generic.\n", + myname, free(myname)); + } else { + del_curterm(termp); + ret_error1(TGETENT_NO, "I need something more specific.\n", + myname, free(myname)); + } + } else if (hard_copy) { + ret_error1(TGETENT_YES, "I can't handle hardcopy terminals.\n", + myname, free(myname)); } - if (hard_copy) { - ret_error(1, "'%s': I can't handle hardcopy terminals.\n", tname); +#endif + free(myname); + returnCode(code); +} + +#ifdef USE_PTHREADS +/* + * Returns a non-null pointer unless a new screen should be allocated because + * no match was found in the pre-screen cache. + */ +NCURSES_EXPORT(SCREEN *) +_nc_find_prescr(void) +{ + SCREEN *result = 0; + PRESCREEN_LIST *p; + pthread_t id = GetThreadID(); + for (p = _nc_prescreen.allocated; p != 0; p = p->next) { + if (p->id == id) { + result = p->sp; + break; + } } - returnCode(OK); + return result; } /* -** do_prototype() -** -** Take the real command character out of the CC environment variable -** and substitute it in for the prototype given in 'command_character'. -** -*/ + * Tells ncurses to forget that this thread was associated with the pre-screen + * cache. It does not modify the pre-screen cache itself, since that is used + * for creating new screens. + */ +NCURSES_EXPORT(void) +_nc_forget_prescr(void) +{ + PRESCREEN_LIST *p, *q; + pthread_t id = GetThreadID(); + _nc_lock_global(screen); + for (p = _nc_prescreen.allocated, q = 0; p != 0; q = p, p = p->next) { + if (p->id == id) { + if (q) { + q->next = p->next; + } else { + _nc_prescreen.allocated = p->next; + } + free(p); + break; + } + } + _nc_unlock_global(screen); +} +#endif /* USE_PTHREADS */ -static void -do_prototype(void) +#if NCURSES_SP_FUNCS +/* + * In case of handling multiple screens, we need to have a screen before + * initialization in _nc_setupscreen takes place. This is to extend the + * substitute for some of the stuff in _nc_prescreen, especially for slk and + * ripoff handling which should be done per screen. + */ +NCURSES_EXPORT(SCREEN *) +new_prescr(void) { - int i; - char CC; - char proto; - char *tmp; + SCREEN *sp; - tmp = getenv("CC"); - CC = *tmp; - proto = *command_character; + START_TRACE(); + T((T_CALLED("new_prescr()"))); - for_each_string(i, &(cur_term->type)) { - for (tmp = cur_term->type.Strings[i]; *tmp; tmp++) { - if (*tmp == proto) - *tmp = CC; + _nc_lock_global(screen); + if ((sp = _nc_find_prescr()) == 0) { + sp = _nc_alloc_screen_sp(); + T(("_nc_alloc_screen_sp %p", (void *) sp)); + if (sp != 0) { +#ifdef USE_PTHREADS + PRESCREEN_LIST *p = typeCalloc(PRESCREEN_LIST, 1); + if (p != 0) { + p->id = GetThreadID(); + p->sp = sp; + p->next = _nc_prescreen.allocated; + _nc_prescreen.allocated = p; + } +#else + _nc_prescreen.allocated = sp; +#endif + sp->rsp = sp->rippedoff; + sp->_filtered = _nc_prescreen.filter_mode; + sp->_use_env = _nc_prescreen.use_env; +#if NCURSES_NO_PADDING + sp->_no_padding = _nc_prescreen._no_padding; +#endif + sp->slk_format = 0; + sp->_slk = 0; + sp->_prescreen = TRUE; + SP_PRE_INIT(sp); +#if USE_REENTRANT + sp->_TABSIZE = _nc_prescreen._TABSIZE; + sp->_ESCDELAY = _nc_prescreen._ESCDELAY; +#endif } + } else { + T(("_nc_alloc_screen_sp %p (reuse)", (void *) sp)); } + _nc_unlock_global(screen); + returnSP(sp); +} +#endif + +#ifdef USE_TERM_DRIVER +/* + * This entrypoint is called from tgetent() to allow a special case of reusing + * the same TERMINAL data (see comment). + */ +NCURSES_EXPORT(int) +_nc_setupterm(const char *tname, + int Filedes, + int *errret, + int reuse) +{ + int rc = ERR; + TERMINAL *termp = 0; + + _nc_init_pthreads(); + _nc_lock_global(prescreen); + START_TRACE(); + if (TINFO_SETUP_TERM(&termp, tname, Filedes, errret, reuse) == OK) { + _nc_forget_prescr(); + if (NCURSES_SP_NAME(set_curterm) (CURRENT_SCREEN_PRE, termp) != 0) { + rc = OK; + } + } + _nc_unlock_global(prescreen); + + return rc; +} +#endif + +/* + * setupterm(termname, Filedes, errret) + * + * Find and read the appropriate object file for the terminal + * Make cur_term point to the structure. + */ +NCURSES_EXPORT(int) +setupterm(const char *tname, int Filedes, int *errret) +{ + START_TRACE(); + return _nc_setupterm(tname, Filedes, errret, FALSE); }