ncurses 5.9 - patch 20140426
[ncurses.git] / ncurses / tinfo / lib_setup.c
index c2a481d7d91150b51e953edb86ac20e7e4eb04e0..522929009c1f7a9612265507b6d4bc4807a1663f 100644 (file)
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2013,2014 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            *
  * Terminal setup routines common to termcap and terminfo:
  *
  *             use_env(bool)
+ *             use_tioctl(bool)
  *             setupterm(char *, int, int *)
  */
 
 #include <curses.priv.h>
 #include <tic.h>               /* for MAX_NAME_SIZE */
 
-#if SVR4_TERMIO && !defined(_POSIX_SOURCE)
-#define _POSIX_SOURCE
-#endif
-
 #if HAVE_LOCALE_H
 #include <locale.h>
 #endif
 
-MODULE_ID("$Id: lib_setup.c,v 1.127 2010/01/23 17:57:43 tom Exp $")
+MODULE_ID("$Id: lib_setup.c,v 1.160 2014/04/26 18:47:20 juergen Exp $")
 
 /****************************************************************************
  *
@@ -225,6 +222,7 @@ NCURSES_SP_NAME(use_env) (NCURSES_SP_DCLx bool f)
 {
     T((T_CALLED("use_env(%p,%d)"), (void *) SP_PARM, (int) f));
 #if NCURSES_SP_FUNCS
+    START_TRACE();
     if (IsPreScreen(SP_PARM)) {
        SP_PARM->_use_env = f;
     }
@@ -234,14 +232,39 @@ NCURSES_SP_NAME(use_env) (NCURSES_SP_DCLx bool f)
     returnVoid;
 }
 
+NCURSES_EXPORT(void)
+NCURSES_SP_NAME(use_tioctl) (NCURSES_SP_DCLx bool f)
+{
+    T((T_CALLED("use_tioctl(%p,%d)"), (void *) SP_PARM, (int) f));
+#if NCURSES_SP_FUNCS
+    START_TRACE();
+    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(%d)"), (int) f));
+    START_TRACE();
     _nc_prescreen.use_env = f;
     returnVoid;
 }
+
+NCURSES_EXPORT(void)
+use_tioctl(bool f)
+{
+    T((T_CALLED("use_tioctl(%d)"), (int) f));
+    START_TRACE();
+    _nc_prescreen.use_tioctl = f;
+    returnVoid;
+}
 #endif
 
 NCURSES_EXPORT(void)
@@ -260,7 +283,7 @@ _nc_get_screensize(SCREEN *sp,
     TCB = (TERMINAL_CONTROL_BLOCK *) termp;
 
     my_tabsize = TCB->info.tabsize;
-    TCB->drv->size(TCB, linep, colp);
+    TCB->drv->td_size(TCB, linep, colp);
 
 #if USE_REENTRANT
     if (sp != 0) {
@@ -278,60 +301,73 @@ _nc_get_screensize(SCREEN *sp,
     /* figure out the size of the screen */
     T(("screen size: terminfo lines = %d columns = %d", lines, columns));
 
-    if (!_nc_prescreen.use_env) {
-       *linep = (int) lines;
-       *colp = (int) columns;
-    } else {                   /* usually want to query LINES and COLUMNS from environment */
-       int value;
-
-       *linep = *colp = 0;
+    *linep = (int) lines;
+    *colp = (int) columns;
 
-       /* 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));
+    if (_nc_prescreen.use_env || _nc_prescreen.use_tioctl) {
+       int value;
 
 #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;
+
+           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);
+                   T(("SYS screen size: environment LINES = %d COLUMNS = %d",
+                      *linep, *colp));
+                   break;
+               }
+           } while
+               (errno == EINTR);
+       }
+#endif /* HAVE_SIZECHANGE */
 
+       if (_nc_prescreen.use_env) {
+           if (_nc_prescreen.use_tioctl) {
                /*
-                * Solaris lets users override either dimension with an
-                * environment variable.
+                * If environment variables are used, update them.
                 */
-               if (*linep <= 0)
-                   *linep = (sp != 0 && sp->_filtered) ? 1 : WINSIZE_ROWS(size);
-               if (*colp <= 0)
-                   *colp = WINSIZE_COLS(size);
+               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));
            }
-           /* FALLTHRU */
-         failure:;
        }
-#endif /* HAVE_SIZECHANGE */
 
        /* if we can't get dynamic info about the size, use static */
        if (*linep <= 0) {
@@ -387,7 +423,7 @@ _nc_update_screensize(SCREEN *sp)
 
     assert(sp != 0);
 
-    CallDriver_2(sp, getsize, &old_lines, &old_cols);
+    CallDriver_2(sp, td_getsize, &old_lines, &old_cols);
 
 #else
     TERMINAL *termp = cur_term;
@@ -402,10 +438,12 @@ _nc_update_screensize(SCREEN *sp)
      * 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))
+    if (sp != 0 && 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;
     }
 }
@@ -417,30 +455,13 @@ _nc_update_screensize(SCREEN *sp)
  *
  ****************************************************************************/
 
-#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);\
-                                       }
-
-#ifndef USE_TERM_DRIVER
-#if USE_DATABASE || USE_TERMCAP
+#if NCURSES_USE_DATABASE || NCURSES_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)
+int
+_nc_setup_tinfo(const char *const tn, TERMTYPE *const tp)
 {
     char filename[PATH_MAX];
     int status = _nc_read_entry(tn, filename, tp);
@@ -465,14 +486,13 @@ grab_entry(const char *const tn, TERMTYPE *const tp)
     return (status);
 }
 #endif
-#endif /* !USE_TERM_DRIVER */
 
 /*
 **     Take the real command character out of the CC environment variable
 **     and substitute it in for the prototype given in 'command_character'.
 */
 void
-_nc_tinfo_cmdch(TERMINAL * termp, char proto)
+_nc_tinfo_cmdch(TERMINAL * termp, int proto)
 {
     unsigned i;
     char CC;
@@ -486,8 +506,8 @@ _nc_tinfo_cmdch(TERMINAL * termp, char proto)
     if ((tmp = getenv("CC")) != 0 && strlen(tmp) == 1) {
        CC = *tmp;
        for_each_string(i, &(termp->type)) {
-           for (tmp = termp->type.Strings[i]; *tmp; tmp++) {
-               if (*tmp == proto)
+           for (tmp = termp->type.Strings[i]; tmp && *tmp; tmp++) {
+               if (UChar(*tmp) == proto)
                    *tmp = CC;
            }
        }
@@ -525,7 +545,9 @@ NCURSES_EXPORT(int)
 _nc_unicode_locale(void)
 {
     int result = 0;
-#if HAVE_LANGINFO_CODESET
+#if defined(__MINGW32__) && 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));
@@ -551,25 +573,31 @@ _nc_unicode_locale(void)
 NCURSES_EXPORT(int)
 _nc_locale_breaks_acs(TERMINAL * termp)
 {
+    const char *env_name = "NCURSES_NO_UTF8_ACS";
     char *env;
+    int value;
+    int result = 0;
 
-    if ((env = getenv("NCURSES_NO_UTF8_ACS")) != 0) {
-       return atoi(env);
+    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"))
-           return 1;           /* always broken */
-       if (strstr(env, "screen") != 0
-           && ((env = getenv("TERMCAP")) != 0
-               && strstr(env, "screen") != 0)
-           && strstr(env, "hhII00") != 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))
-               return 1;
+               CONTROL_O(set_attributes)) {
+               result = 1;
+           }
        }
     }
-    return 0;
+    return result;
 }
 
 NCURSES_EXPORT(int)
@@ -577,7 +605,7 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
                 NCURSES_CONST char *tname,
                 int Filedes,
                 int *errret,
-                bool reuse)
+                int reuse)
 {
 #ifdef USE_TERM_DRIVER
     TERMINAL_CONTROL_BLOCK *TCB = 0;
@@ -592,7 +620,7 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
 
 #ifdef USE_TERM_DRIVER
     T((T_CALLED("_nc_setupterm_ex(%p,%s,%d,%p)"),
-       tp, _nc_visbuf(tname), Filedes, errret));
+       (void *) tp, _nc_visbuf(tname), Filedes, (void *) errret));
 
     if (tp == 0) {
        ret_error0(TGETENT_ERR,
@@ -607,7 +635,11 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
     if (tname == 0) {
        tname = getenv("TERM");
        if (tname == 0 || *tname == '\0') {
+#ifdef USE_TERM_DRIVER
+           tname = "unknown";
+#else
            ret_error0(TGETENT_ERR, "TERM environment variable not set.\n");
+#endif
        }
     }
 
@@ -623,7 +655,7 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
      * 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;
 
     /*
@@ -650,9 +682,14 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
        && _nc_name_match(termp->type.term_names, tname, "|")) {
        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
-       termp = (TERMINAL *) typeCalloc(TERMINAL_CONTROL_BLOCK, 1);
+       TERMINAL_CONTROL_BLOCK *my_tcb;
+       my_tcb = typeCalloc(TERMINAL_CONTROL_BLOCK, 1);
+       termp = &(my_tcb->term);
 #else
        termp = typeCalloc(TERMINAL, 1);
 #endif
@@ -661,18 +698,19 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
                       "Not enough memory to create terminal structure.\n");
        }
 #ifdef USE_TERM_DRIVER
+       INIT_TERM_DRIVER();
        TCB = (TERMINAL_CONTROL_BLOCK *) termp;
        code = _nc_globals.term_driver(TCB, tname, errret);
        if (code == OK) {
-           termp->Filedes = Filedes;
+           termp->Filedes = (short) Filedes;
            termp->_termname = strdup(tname);
        } else {
            ret_error0(TGETENT_ERR,
                       "Could not find any driver to handle this terminal.\n");
        }
 #else
-#if USE_DATABASE || USE_TERMCAP
-       status = grab_entry(tname, &termp->type);
+#if NCURSES_USE_DATABASE || NCURSES_USE_TERMCAP
+       status = _nc_setup_tinfo(tname, &termp->type);
 #else
        status = TGETENT_NO;
 #endif
@@ -682,7 +720,7 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
            const TERMTYPE *fallback = _nc_fallback(tname);
 
            if (fallback) {
-               termp->type = *fallback;
+               _nc_copy_termtype(&(termp->type), fallback);
                status = TGETENT_YES;
            }
        }
@@ -692,21 +730,21 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
            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);
+               ret_error1(status, "unknown terminal type.\n", tname);
            }
        }
 #if !USE_REENTRANT
-       strncpy(ttytype, termp->type.term_names, NAMESIZE - 1);
+       strncpy(ttytype, termp->type.term_names, (size_t) (NAMESIZE - 1));
        ttytype[NAMESIZE - 1] = '\0';
 #endif
 
-       termp->Filedes = Filedes;
+       termp->Filedes = (short) Filedes;
        termp->_termname = strdup(tname);
 
        set_curterm(termp);
 
        if (command_character)
-           _nc_tinfo_cmdch(termp, *command_character);
+           _nc_tinfo_cmdch(termp, UChar(*command_character));
 
        /*
         * If an application calls setupterm() rather than initscr() or
@@ -714,7 +752,7 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
         * _nc_setupscreen().  Do it now anyway, so we can initialize the
         * baudrate.
         */
-       if (isatty(Filedes)) {
+       if (NC_ISATTY(Filedes)) {
            def_prog_mode();
            baudrate();
        }
@@ -725,7 +763,7 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
 #ifdef USE_TERM_DRIVER
     *tp = termp;
     NCURSES_SP_NAME(set_curterm) (sp, termp);
-    TCB->drv->init(TCB);
+    TCB->drv->td_init(TCB);
 #else
     sp = SP;
 #endif
@@ -740,10 +778,20 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
 
 #ifndef USE_TERM_DRIVER
     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);
+       /*
+        * 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", tname);
+       } else {
+           del_curterm(termp);
+           ret_error1(TGETENT_NO, "I need something more specific.\n", tname);
+       }
+    } else if (hard_copy) {
+       ret_error1(TGETENT_YES, "I can't handle hardcopy terminals.\n", tname);
     }
 #endif
     returnCode(code);
@@ -796,10 +844,10 @@ NCURSES_EXPORT(int)
 _nc_setupterm(NCURSES_CONST char *tname,
              int Filedes,
              int *errret,
-             bool reuse)
+             int reuse)
 {
     int res;
-    TERMINAL *termp;
+    TERMINAL *termp = 0;
     res = TINFO_SETUP_TERM(&termp, tname, Filedes, errret, reuse);
     if (ERR != res)
        NCURSES_SP_NAME(set_curterm) (CURRENT_SCREEN_PRE, termp);