X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftinfo%2Flib_setup.c;h=90ffda762f5bbc9db8f89a85649a30a63212c032;hp=64aa73fa8cf3a2b6177f94712b1a893a3db28d82;hb=6bbba9cd97d487dc567d06eb8f9131825abe3962;hpb=0eb88fc5281804773e2a0c7a488a4452463535ce diff --git a/ncurses/tinfo/lib_setup.c b/ncurses/tinfo/lib_setup.c index 64aa73fa..90ffda76 100644 --- a/ncurses/tinfo/lib_setup.c +++ b/ncurses/tinfo/lib_setup.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 1998 Free Software Foundation, Inc. * + * Copyright (c) 1998-2006,2007 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 * @@ -29,9 +29,9 @@ /**************************************************************************** * Author: Zeyd M. Ben-Halim 1992,1995 * * and: Eric S. Raymond * + * and: Thomas E. Dickey 1996-on * ****************************************************************************/ - /* * Terminal setup routines common to termcap and terminfo: * @@ -40,16 +40,20 @@ */ #include -#include /* for MAX_NAME_SIZE */ +#include /* for MAX_NAME_SIZE */ #include -#if defined(SVR4_TERMIO) && !defined(_POSIX_SOURCE) +#if SVR4_TERMIO && !defined(_POSIX_SOURCE) #define _POSIX_SOURCE #endif -#include /* lines, columns, cur_term */ +#if HAVE_LOCALE_H +#include +#endif + +#include /* lines, columns, cur_term */ -MODULE_ID("$Id: lib_setup.c,v 1.55 1999/08/21 23:06:08 tom Exp $") +MODULE_ID("$Id: lib_setup.c,v 1.99 2007/07/16 20:32:27 tom Exp $") /**************************************************************************** * @@ -73,6 +77,10 @@ MODULE_ID("$Id: lib_setup.c,v 1.55 1999/08/21 23:06:08 tom Exp $") # include #endif +#if HAVE_LANGINFO_CODESET +#include +#endif + /* * SCO defines TIOCGSIZE and the corresponding struct. Other systems (SunOS, * Solaris, IRIX) define TIOCGWINSZ and struct winsize. @@ -91,124 +99,194 @@ MODULE_ID("$Id: lib_setup.c,v 1.55 1999/08/21 23:06:08 tom Exp $") # endif #endif -static int _use_env = TRUE; - -static void do_prototype(void); +#if USE_REENTRANT +NCURSES_EXPORT(char *) +NCURSES_PUBLIC_VAR(ttytype) (void) +{ + return cur_term ? cur_term->type.term_names : ""; +} +NCURSES_EXPORT(int) +NCURSES_PUBLIC_VAR(LINES) (void) +{ + return (SP ? SP->_LINES : _nc_prescreen._LINES); +} +NCURSES_EXPORT(int) +NCURSES_PUBLIC_VAR(COLS) (void) +{ + return SP ? SP->_COLS : _nc_prescreen._COLS; +} +NCURSES_EXPORT(int) +NCURSES_PUBLIC_VAR(TABSIZE) (void) +{ + return SP ? SP->_TABSIZE : 8; +} +#else +NCURSES_EXPORT_VAR(char) ttytype[NAMESIZE] = ""; +NCURSES_EXPORT_VAR(int) LINES = 0; +NCURSES_EXPORT_VAR(int) COLS = 0; +NCURSES_EXPORT_VAR(int) TABSIZE = 0; +#endif -void use_env(bool f) +#if USE_SIGWINCH +/* + * If we have a pending SIGWINCH, set the flag in each screen. + */ +NCURSES_EXPORT(int) +_nc_handle_sigwinch(int update) { - _use_env = f; + SCREEN *scan; + + (void) update; /* no longer used */ + + if (_nc_globals.have_sigwinch) { + _nc_globals.have_sigwinch = 0; + + scan = _nc_screen_chain; + while (scan) { + scan->_sig_winch = TRUE; + scan = scan->_next_screen; + } + } + + return (SP ? SP->_sig_winch : 0); } -int LINES, COLS, TABSIZE; +#endif -static void _nc_get_screensize(int *linep, int *colp) +NCURSES_EXPORT(void) +use_env(bool f) +{ + T((T_CALLED("use_env()"))); + _nc_prescreen.use_env = f; + returnVoid; +} + +NCURSES_EXPORT(void) +_nc_get_screensize(int *linep, int *colp) /* Obtain lines/columns values from the environment and/or terminfo entry */ { - /* figure out the size of the screen */ - T(("screen size: terminfo lines = %d columns = %d", lines, columns)); + int my_tabsize; - if (!_use_env) - { - *linep = (int)lines; - *colp = (int)columns; - } - else /* usually want to query LINES and COLUMNS from environment */ - { - int value; + /* figure out the size of the screen */ + T(("screen size: terminfo lines = %d columns = %d", lines, columns)); - *linep = *colp = 0; + if (!_nc_prescreen.use_env) { + *linep = (int) lines; + *colp = (int) columns; + } else { /* usually want to query LINES and COLUMNS from environment */ + int value; - /* first, look for environment variables */ - if ((value = _nc_getenv_num("LINES")) > 0) { - *linep = value; - } - if ((value = _nc_getenv_num("COLUMNS")) > 0) { - *colp = value; - } - T(("screen size: environment LINES = %d COLUMNS = %d",*linep,*colp)); + *linep = *colp = 0; + + /* first, look for environment variables */ + if ((value = _nc_getenv_num("LINES")) > 0) { + *linep = value; + } + if ((value = _nc_getenv_num("COLUMNS")) > 0) { + *colp = value; + } + T(("screen size: environment LINES = %d COLUMNS = %d", *linep, *colp)); #ifdef __EMX__ - if (*linep <= 0 || *colp <= 0) - { - int screendata[2]; - _scrsize(screendata); - *colp = screendata[0]; - *linep = screendata[1]; - T(("EMX screen size: environment LINES = %d COLUMNS = %d",*linep,*colp)); - } + if (*linep <= 0 || *colp <= 0) { + int screendata[2]; + _scrsize(screendata); + *colp = screendata[0]; + *linep = 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); - - /* - * Solaris lets users override either dimension with an - * environment variable. - */ - if (*linep <= 0) - *linep = WINSIZE_ROWS(size); - if (*colp <= 0) - *colp = WINSIZE_COLS(size); - } - /* FALLTHRU */ - failure:; + /* 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); + + /* + * Solaris lets users override either dimension with an + * environment variable. + */ + if (*linep <= 0) + *linep = (SP != 0 && SP->_filtered) ? 1 : WINSIZE_ROWS(size); + if (*colp <= 0) + *colp = WINSIZE_COLS(size); } + /* FALLTHRU */ + failure:; + } #endif /* HAVE_SIZECHANGE */ - /* if we can't get dynamic info about the size, use static */ - if (*linep <= 0 || *colp <= 0) - if (lines > 0 && columns > 0) - { - *linep = (int)lines; - *colp = (int)columns; - } - - /* the ultimate fallback, assume fixed 24x80 size */ - if (*linep <= 0 || *colp <= 0) - { - *linep = 24; - *colp = 80; - } + /* if we can't get dynamic info about the size, use static */ + if (*linep <= 0) { + *linep = (int) lines; + } + if (*colp <= 0) { + *colp = (int) columns; + } - /* - * 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); + /* the ultimate fallback, assume fixed 24x80 size */ + if (*linep <= 0) { + *linep = 24; + } + if (*colp <= 0) { + *colp = 80; } - T(("screen size is %dx%d", *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); + } - if (init_tabs != -1) - TABSIZE = (int)init_tabs; - else - TABSIZE = 8; - T(("TABSIZE = %d", TABSIZE)); + T(("screen size is %dx%d", *linep, *colp)); + if (VALID_NUMERIC(init_tabs)) + my_tabsize = (int) init_tabs; + else + my_tabsize = 8; + +#if USE_REENTRANT + if (SP != 0) + SP->_TABSIZE = my_tabsize; +#else + TABSIZE = my_tabsize; +#endif + T(("TABSIZE = %d", TABSIZE)); } #if USE_SIZECHANGE -void _nc_update_screensize(void) +NCURSES_EXPORT(void) +_nc_update_screensize(void) { - int my_lines, my_cols; - - _nc_get_screensize(&my_lines, &my_cols); - if (SP != 0 && SP->_resize != 0) - SP->_resize(my_lines, my_cols); + int old_lines = lines; + int new_lines; + int old_cols = columns; + int new_cols; + + _nc_get_screensize(&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 != 0 + && SP->_resize != 0) { + if ((new_lines != old_lines) || (new_cols != old_cols)) + SP->_resize(new_lines, new_cols); + SP->_sig_winch = FALSE; + } } #endif @@ -234,189 +312,288 @@ void _nc_update_screensize(void) exit(EXIT_FAILURE);\ } -#if USE_DATABASE -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 USE_DATABASE || USE_TERMCAP +/* + * Return 1 if entry found, 0 if not found, -1 if database not accessible, + * just like tgetent(). + */ +static int +grab_entry(const char *const tn, TERMTYPE *const tp) { - char filename[PATH_MAX]; - int status; - - /* - * $TERM shouldn't contain pathname delimiters. - */ - if (strchr(tn, '/')) - return 0; - - if ((status = _nc_read_entry(tn, filename, tp)) != 1) { - -#ifndef 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 */ - + char filename[PATH_MAX]; + int status = _nc_read_entry(tn, filename, tp); + + /* + * If we have an entry, force all of the cancelled strings to null + * pointers so we don't have to test them in the rest of the library. + * (The terminfo compiler bypasses this logic, since it must know if + * a string is cancelled, for merging entries). + */ + if (status == TGETENT_YES) { + unsigned n; + for_each_boolean(n, tp) { + if (!VALID_BOOLEAN(tp->Booleans[n])) + tp->Booleans[n] = FALSE; } - - /* - * If we have an entry, force all of the cancelled strings to null - * pointers so we don't have to test them in the rest of the library. - * (The terminfo compiler bypasses this logic, since it must know if - * a string is cancelled, for merging entries). - */ - if (status == 1) { - int n; - for_each_boolean(n,tp) - if (!VALID_BOOLEAN(tp->Booleans[n])) - tp->Booleans[n] = FALSE; - for_each_string(n,tp) - if (tp->Strings[n] == CANCELLED_STRING) - tp->Strings[n] = ABSENT_STRING; + for_each_string(n, tp) { + if (tp->Strings[n] == CANCELLED_STRING) + tp->Strings[n] = ABSENT_STRING; } - return(status); + } + return (status); } #endif -char ttytype[NAMESIZE]; +/* +** do_prototype() +** +** Take the real command character out of the CC environment variable +** and substitute it in for the prototype given in 'command_character'. +*/ +static void +do_prototype(void) +{ + int i; + char CC; + char proto; + char *tmp; + + tmp = getenv("CC"); + CC = *tmp; + proto = *command_character; + + for_each_string(i, &(cur_term->type)) { + for (tmp = cur_term->type.Strings[i]; *tmp; tmp++) { + if (*tmp == proto) + *tmp = CC; + } + } +} /* - * setupterm(termname, Filedes, errret) - * - * Find and read the appropriate object file for the terminal - * Make cur_term point to the structure. - * + * 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("LC_ALL")) != 0 && *env != '\0') + || ((env = getenv("LC_CTYPE")) != 0 && *env != '\0') + || ((env = getenv("LANG")) != 0 && *env != '\0')) { + ; + } +#endif + T(("_nc_get_locale %s", _nc_visbuf(env))); + return env; +} -int setupterm(NCURSES_CONST char *tname, int Filedes, int *errret) +/* + * Check if we are running in a UTF-8 locale. + */ +NCURSES_EXPORT(int) +_nc_unicode_locale(void) { -struct term *term_ptr; -int status; + int result = 0; +#if HAVE_LANGINFO_CODESET + char *env = nl_langinfo(CODESET); + result = !strcmp(env, "UTF-8"); + T(("_nc_unicode_locale(%s) ->%d", env, result)); +#else + 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 + return result; +} - T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, errret)); +#define CONTROL_N(s) ((s) != 0 && strstr(s, "\016") != 0) +#define CONTROL_O(s) ((s) != 0 && strstr(s, "\017") != 0) - if (tname == 0) { - tname = getenv("TERM"); - if (tname == 0 || *tname == '\0') { - ret_error0(-1, "TERM environment variable not set.\n"); - } - } - if (strlen(tname) > MAX_NAME_SIZE) { - ret_error(-1, "TERM environment must be <= %d characters.\n", - MAX_NAME_SIZE); +/* + * Check for known broken cases where a UTF-8 locale breaks the alternate + * character set. + */ +NCURSES_EXPORT(int) +_nc_locale_breaks_acs(void) +{ + char *env; + + if ((env = getenv("NCURSES_NO_UTF8_ACS")) != 0) { + return atoi(env); + } else if ((env = getenv("TERM")) != 0) { + if (strstr(env, "linux")) + return 1; /* always broken */ + 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)) + return 1; } + } + return 0; +} + +/* + * This entrypoint is called from tgetent() to allow a special case of reusing + * the same TERMINAL data (see comment). + */ +NCURSES_EXPORT(int) +_nc_setupterm(NCURSES_CONST char *tname, int Filedes, int *errret, bool reuse) +{ + int status; + + START_TRACE(); + T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, errret)); - T(("your terminal name is %s", tname)); + if (tname == 0) { + tname = getenv("TERM"); + if (tname == 0 || *tname == '\0') { + ret_error0(TGETENT_ERR, "TERM environment variable not set.\n"); + } + } + + if (strlen(tname) > MAX_NAME_SIZE) { + ret_error(TGETENT_ERR, + "TERM environment must be <= %d characters.\n", + MAX_NAME_SIZE); + } + + T(("your terminal name is %s", tname)); + + /* + * 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)) + Filedes = STDERR_FILENO; + + /* + * 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 (reuse + && cur_term != 0 + && cur_term->Filedes == Filedes + && cur_term->_termname != 0 + && !strcmp(cur_term->_termname, tname) + && _nc_name_match(cur_term->type.term_names, tname, "|")) { + T(("reusing existing terminal information and mode-settings")); + } else { + TERMINAL *term_ptr; term_ptr = typeCalloc(TERMINAL, 1); if (term_ptr == 0) { - ret_error0(-1, "Not enough memory to create terminal structure.\n") ; - } -#if USE_DATABASE + ret_error0(TGETENT_ERR, + "Not enough memory to create terminal structure.\n"); + } +#if USE_DATABASE || USE_TERMCAP status = grab_entry(tname, &term_ptr->type); #else - status = 0; + status = TGETENT_NO; #endif /* try fallback list if entry on disk */ - if (status != 1) - { - const TERMTYPE *fallback = _nc_fallback(tname); + if (status != TGETENT_YES) { + const TERMTYPE *fallback = _nc_fallback(tname); - if (fallback) - { + if (fallback) { term_ptr->type = *fallback; - status = 1; + status = TGETENT_YES; } } - if (status == -1) - { - ret_error0(-1, "terminals database is inaccessible\n"); - } - else if (status == 0) - { - ret_error(0, "'%s': unknown terminal type.\n", tname); - } - - /* - * 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; + if (status != TGETENT_YES) { + del_curterm(term_ptr); + if (status == TGETENT_ERR) { + ret_error0(status, "terminals database is inaccessible\n"); + } else if (status == TGETENT_NO) { + ret_error(status, "'%s': unknown terminal type.\n", tname); + } } set_curterm(term_ptr); - if (command_character && getenv("CC")) - do_prototype(); + if (command_character && getenv("CC")) + do_prototype(); +#if !USE_REENTRANT strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1); ttytype[NAMESIZE - 1] = '\0'; +#endif - /* - * 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)) - Filedes = STDERR_FILENO; cur_term->Filedes = Filedes; + cur_term->_termname = strdup(tname); - _nc_get_screensize(&LINES, &COLS); - - if (errret) - *errret = 1; + /* + * 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. + */ + if (isatty(Filedes)) { + def_prog_mode(); + baudrate(); + } + } + + /* + * We should always check the screensize, just in case. + */ +#if USE_REENTRANT + _nc_get_screensize(SP ? &(SP->_LINES) : &(_nc_prescreen._LINES), + SP ? &(SP->_COLS) : &(_nc_prescreen._COLS)); +#else + _nc_get_screensize(&LINES, &COLS); +#endif - T((T_CREATE("screen %s %dx%d"), tname, LINES, COLS)); + if (errret) + *errret = TGETENT_YES; - if (generic_type) { - ret_error(0, "'%s': I need something more specific.\n", tname); - } - if (hard_copy) { - ret_error(1, "'%s': I can't handle hardcopy terminals.\n", tname); - } - returnCode(OK); + if (generic_type) { + ret_error(TGETENT_NO, "'%s': I need something more specific.\n", tname); + } + if (hard_copy) { + ret_error(TGETENT_YES, "'%s': I can't handle hardcopy terminals.\n", tname); + } + returnCode(OK); } /* -** do_prototype() -** -** Take the real command character out of the CC environment variable -** and substitute it in for the prototype given in 'command_character'. -** -*/ - -static void -do_prototype(void) + * 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(NCURSES_CONST char *tname, int Filedes, int *errret) { -int i; -char CC; -char proto; -char *tmp; - - tmp = getenv("CC"); - CC = *tmp; - proto = *command_character; - - for_each_string(i, &(cur_term->type)) { - for (tmp = cur_term->type.Strings[i]; *tmp; tmp++) { - if (*tmp == proto) - *tmp = CC; - } - } + return _nc_setupterm(tname, Filedes, errret, FALSE); }