]> ncurses.scripts.mit.edu Git - ncurses.git/blobdiff - ncurses/tinfo/lib_setup.c
ncurses 5.9 - patch 20111001
[ncurses.git] / ncurses / tinfo / lib_setup.c
index d00ecb0ab567dcc2aef0c022e9e3a1354e7dae85..9bfe17a861a64c078dbb55124328dc8bfc6fece9 100644 (file)
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2010,2011 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            *
 
 #include <curses.priv.h>
 #include <tic.h>               /* for MAX_NAME_SIZE */
-#include <term_entry.h>
-
-#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 1.123 2009/10/31 20:39:36 tom Exp $")
+MODULE_ID("$Id: lib_setup.c,v 1.141 2011/08/13 16:07:22 tom Exp $")
 
 /****************************************************************************
  *
@@ -226,6 +221,7 @@ 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;
     }
@@ -240,6 +236,7 @@ NCURSES_EXPORT(void)
 use_env(bool f)
 {
     T((T_CALLED("use_env(%d)"), (int) f));
+    START_TRACE();
     _nc_prescreen.use_env = f;
     returnVoid;
 }
@@ -268,6 +265,7 @@ _nc_get_screensize(SCREEN *sp,
        sp->_TABSIZE = my_tabsize;
     }
 #else
+    (void) sp;
     TABSIZE = my_tabsize;
 #endif
     T(("TABSIZE = %d", my_tabsize));
@@ -278,25 +276,14 @@ _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) {
+       int value;
 
 #ifdef __EMX__
-       if (*linep <= 0 || *colp <= 0) {
+       {
            int screendata[2];
            _scrsize(screendata);
            *colp = screendata[0];
@@ -306,33 +293,41 @@ _nc_get_screensize(SCREEN *sp,
        }
 #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 = (sp != 0 && sp->_filtered) ? 1 : WINSIZE_ROWS(size);
-               if (*colp <= 0)
+       /* try asking the OS */
+       if (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);
-           }
-           /* FALLTHRU */
-         failure:;
+                   T(("SYS screen size: environment LINES = %d COLUMNS = %d",
+                      *linep, *colp));
+                   break;
+               }
+           } while
+               (errno == EINTR);
        }
 #endif /* HAVE_SIZECHANGE */
 
+       /*
+        * 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));
+       }
+
        /* if we can't get dynamic info about the size, use static */
        if (*linep <= 0) {
            *linep = (int) lines;
@@ -417,30 +412,13 @@ _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
 /*
  * 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);
@@ -465,7 +443,6 @@ 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
@@ -486,7 +463,7 @@ _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++) {
+           for (tmp = termp->type.Strings[i]; tmp && *tmp; tmp++) {
                if (*tmp == proto)
                    *tmp = CC;
            }
@@ -551,25 +528,31 @@ _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)
@@ -592,7 +575,7 @@ 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,
@@ -661,10 +644,11 @@ 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_get_driver(TCB, tname, errret);
+       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,
@@ -672,7 +656,7 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
        }
 #else
 #if USE_DATABASE || USE_TERMCAP
-       status = grab_entry(tname, &termp->type);
+       status = _nc_setup_tinfo(tname, &termp->type);
 #else
        status = TGETENT_NO;
 #endif
@@ -692,7 +676,7 @@ 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
@@ -700,7 +684,7 @@ TINFO_SETUP_TERM(TERMINAL ** tp,
        ttytype[NAMESIZE - 1] = '\0';
 #endif
 
-       termp->Filedes = Filedes;
+       termp->Filedes = (short) Filedes;
        termp->_termname = strdup(tname);
 
        set_curterm(termp);
@@ -740,15 +724,62 @@ 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 {
+           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);
 }
 
+#if NCURSES_SP_FUNCS
+/*
+ * In case of handling multiple screens, we need to have a screen before
+ * initialization in 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)
+{
+    static SCREEN *sp;
+
+    START_TRACE();
+    T((T_CALLED("new_prescr()")));
+
+    if (sp == 0) {
+       sp = _nc_alloc_screen_sp();
+       if (sp != 0) {
+           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
+       }
+    }
+    returnSP(sp);
+}
+#endif
+
 #ifdef USE_TERM_DRIVER
 /*
  * This entrypoint is called from tgetent() to allow a special case of reusing