diff options
Diffstat (limited to 'contrib/ncurses/ncurses/tinfo/lib_setup.c')
| -rw-r--r-- | contrib/ncurses/ncurses/tinfo/lib_setup.c | 411 |
1 files changed, 285 insertions, 126 deletions
diff --git a/contrib/ncurses/ncurses/tinfo/lib_setup.c b/contrib/ncurses/ncurses/tinfo/lib_setup.c index 1e49b2b..3508242 100644 --- a/contrib/ncurses/ncurses/tinfo/lib_setup.c +++ b/contrib/ncurses/ncurses/tinfo/lib_setup.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 1998,1999,2000,2001 Free Software Foundation, Inc. * + * Copyright (c) 1998-2005,2006 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 +29,7 @@ /**************************************************************************** * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * * and: Eric S. Raymond <esr@snark.thyrsus.com> * + * and: Thomas E. Dickey 1996-2003 * ****************************************************************************/ /* @@ -46,9 +47,13 @@ #define _POSIX_SOURCE #endif +#if HAVE_LOCALE_H +#include <locale.h> +#endif + #include <term.h> /* lines, columns, cur_term */ -MODULE_ID("$Id: lib_setup.c,v 1.68 2001/12/08 22:14:18 tom Exp $") +MODULE_ID("$Id: lib_setup.c,v 1.95 2006/07/28 22:58:13 tom Exp $") /**************************************************************************** * @@ -72,6 +77,10 @@ MODULE_ID("$Id: lib_setup.c,v 1.68 2001/12/08 22:14:18 tom Exp $") # include <sys/ptem.h> #endif +#if HAVE_LANGINFO_CODESET +#include <langinfo.h> +#endif + /* * SCO defines TIOCGSIZE and the corresponding struct. Other systems (SunOS, * Solaris, IRIX) define TIOCGWINSZ and struct winsize. @@ -90,9 +99,58 @@ MODULE_ID("$Id: lib_setup.c,v 1.68 2001/12/08 22:14:18 tom Exp $") # endif #endif +NCURSES_EXPORT_VAR(char) ttytype[NAMESIZE] = ""; +NCURSES_EXPORT_VAR(int) LINES = 0; +NCURSES_EXPORT_VAR(int) COLS = 0; +NCURSES_EXPORT_VAR(int) TABSIZE = 0; + static int _use_env = TRUE; -static void do_prototype(void); +#if USE_SIGWINCH +int +_nc_handle_sigwinch(int enable) +{ + static int have_sigwinch = 0; /* initially no SIGWINCH's */ + static int can_resizeall = 1; /* initially enabled */ + SCREEN *scan; + int result; + + switch (enable) { + default: + /* record a SIGWINCH */ + have_sigwinch = 1; + break; + case 0: + /* temporarily disable the next block */ + --can_resizeall; + break; + case 1: + /* temporarily enable the next block */ + ++can_resizeall; + break; + } + + /* + * If we have a pending SIGWINCH, set the flag in each screen. + * But do this only if the block is enabled. + */ + if (can_resizeall-- >= 0) { /* test and disable */ + if (have_sigwinch) { + scan = _nc_screen_chain; + while (scan) { + scan->_sig_winch = TRUE; + scan = scan->_next_screen; + } + have_sigwinch = 0; + } + } + result = can_resizeall + 1; /* reenable (unless disables are nested) */ + can_resizeall = result; + + return result; +} + +#endif NCURSES_EXPORT(void) use_env(bool f) @@ -102,10 +160,6 @@ use_env(bool f) returnVoid; } -NCURSES_EXPORT_VAR(int) LINES = 0; -NCURSES_EXPORT_VAR(int) COLS = 0; -NCURSES_EXPORT_VAR(int) TABSIZE = 0; - static void _nc_get_screensize(int *linep, int *colp) /* Obtain lines/columns values from the environment and/or terminfo entry */ @@ -113,6 +167,7 @@ _nc_get_screensize(int *linep, int *colp) /* figure out the size of the screen */ T(("screen size: terminfo lines = %d columns = %d", lines, columns)); + _nc_handle_sigwinch(0); if (!_use_env) { *linep = (int) lines; *colp = (int) columns; @@ -159,7 +214,7 @@ _nc_get_screensize(int *linep, int *colp) * environment variable. */ if (*linep <= 0) - *linep = WINSIZE_ROWS(size); + *linep = (SP != 0 && SP->_filtered) ? 1 : WINSIZE_ROWS(size); if (*colp <= 0) *colp = WINSIZE_COLS(size); } @@ -191,6 +246,7 @@ _nc_get_screensize(int *linep, int *colp) lines = (short) (*linep); columns = (short) (*colp); } + _nc_handle_sigwinch(1); T(("screen size is %dx%d", *linep, *colp)); @@ -199,18 +255,30 @@ _nc_get_screensize(int *linep, int *colp) else TABSIZE = 8; T(("TABSIZE = %d", TABSIZE)); - } #if USE_SIZECHANGE NCURSES_EXPORT(void) _nc_update_screensize(void) { - int my_lines, my_cols; + int old_lines = lines; + int new_lines; + int old_cols = columns; + int new_cols; - _nc_get_screensize(&my_lines, &my_cols); - if (SP != 0 && SP->_resize != 0) - SP->_resize(my_lines, my_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 @@ -237,36 +305,15 @@ _nc_update_screensize(void) } #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) -/* return 1 if entry found, 0 if not found, -1 if database not accessible */ +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 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_entry(tn, filename, tp); /* * If we have an entry, force all of the cancelled strings to null @@ -274,8 +321,8 @@ 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; for_each_boolean(n, tp) { if (!VALID_BOOLEAN(tp->Booleans[n])) tp->Booleans[n] = FALSE; @@ -289,139 +336,251 @@ grab_entry(const char *const tn, TERMTYPE * const tp) } #endif -NCURSES_EXPORT_VAR(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; +} + +/* + * Check if we are running in a UTF-8 locale. */ +NCURSES_EXPORT(int) +_nc_unicode_locale(void) +{ + 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; +} +#define CONTROL_N(s) ((s) != 0 && strstr(s, "\016") != 0) +#define CONTROL_O(s) ((s) != 0 && strstr(s, "\017") != 0) + +/* + * Check for known broken cases where a UTF-8 locale breaks the alternate + * character set. + */ NCURSES_EXPORT(int) -setupterm(NCURSES_CONST char *tname, int Filedes, int *errret) +_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) { - struct term *term_ptr; int status; + START_TRACE(); T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, errret)); if (tname == 0) { tname = getenv("TERM"); if (tname == 0 || *tname == '\0') { - ret_error0(-1, "TERM environment variable not set.\n"); + ret_error0(TGETENT_ERR, "TERM environment variable not set.\n"); } } + if (strlen(tname) > MAX_NAME_SIZE) { - ret_error(-1, "TERM environment must be <= %d characters.\n", + ret_error(TGETENT_ERR, + "TERM environment must be <= %d characters.\n", MAX_NAME_SIZE); } T(("your terminal name is %s", tname)); - term_ptr = typeCalloc(TERMINAL, 1); + /* + * 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; - if (term_ptr == 0) { - ret_error0(-1, "Not enough memory to create terminal structure.\n"); - } + /* + * 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(TGETENT_ERR, + "Not enough memory to create terminal structure.\n"); + } #if USE_DATABASE || USE_TERMCAP - status = grab_entry(tname, &term_ptr->type); + 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); + /* try fallback list if entry on disk */ + if (status != TGETENT_YES) { + const TERMTYPE *fallback = _nc_fallback(tname); - if (fallback) { - term_ptr->type = *fallback; - status = 1; + if (fallback) { + term_ptr->type = *fallback; + 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); - } + 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); + } + } - /* - * 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; - } + set_curterm(term_ptr); + + if (command_character && getenv("CC")) + do_prototype(); - set_curterm(term_ptr); + strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1); + ttytype[NAMESIZE - 1] = '\0'; - if (command_character && getenv("CC")) - do_prototype(); + cur_term->Filedes = Filedes; + cur_term->_termname = strdup(tname); - strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1); - ttytype[NAMESIZE - 1] = '\0'; + /* + * 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(); + } + } /* - * Allow output redirection. This is what SVr3 does. - * If stdout is directed to a file, screen updates go - * to standard error. + * We should always check the screensize, just in case. */ - if (Filedes == STDOUT_FILENO && !isatty(Filedes)) - Filedes = STDERR_FILENO; - cur_term->Filedes = Filedes; - _nc_get_screensize(&LINES, &COLS); if (errret) - *errret = 1; + *errret = TGETENT_YES; T((T_CREATE("screen %s %dx%d"), tname, LINES, COLS)); if (generic_type) { - ret_error(0, "'%s': I need something more specific.\n", tname); + ret_error(TGETENT_NO, "'%s': I need something more specific.\n", tname); } if (hard_copy) { - ret_error(1, "'%s': I can't handle hardcopy terminals.\n", tname); + 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); } |
