ncurses 6.2 - patch 20200404
[ncurses.git] / ncurses / tinfo / comp_parse.c
index 6aa0e0396d382f5dd41b718112d523ab18971239..2a89a866c3744a2af67bbe97b38e403fac511675 100644 (file)
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 1998-2017,2018 Free Software Foundation, Inc.              *
+ * Copyright 2018-2019,2020 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            *
 
 #include <tic.h>
 
-MODULE_ID("$Id: comp_parse.c,v 1.101 2018/02/24 22:33:40 tom Exp $")
+MODULE_ID("$Id: comp_parse.c,v 1.110 2020/02/29 15:46:00 anonymous.maarten Exp $")
 
 static void sanity_check2(TERMTYPE2 *, bool);
-NCURSES_IMPEXP void NCURSES_API(*_nc_check_termtype2) (TERMTYPE2 *, bool) = sanity_check2;
+NCURSES_IMPEXP void (NCURSES_API *_nc_check_termtype2) (TERMTYPE2 *, bool) = sanity_check2;
 
 static void fixup_acsc(TERMTYPE2 *, int);
 
@@ -80,7 +81,7 @@ force_bar(char *dst, char *src)
        size_t len = strlen(src);
        if (len > MAX_NAME_SIZE)
            len = MAX_NAME_SIZE;
-       _nc_STRNCPY(dst, src, len);
+       _nc_STRNCPY(dst, src, MAX_NAME_SIZE);
        _nc_STRCPY(dst + len, "|", NAMEBUFFER_SIZE - len);
        src = dst;
     }
@@ -180,11 +181,11 @@ remove_collision(char *n1, char *n2)
                        ++qend;
                    while ((*qstart++ = *qend++) != '\0') ;
                    fprintf(stderr, "...now\t%s\n", p2);
+                   removed = TRUE;
                } else {
                    fprintf(stderr, "Cannot remove alias '%.*s'\n",
                            (int) (qend - qstart), qstart);
                }
-               removed = TRUE;
                break;
            }
        }
@@ -271,9 +272,13 @@ find_capname(TERMTYPE2 *p, const char *name)
 {
     unsigned num_names = NUM_EXT_NAMES(p);
     unsigned n;
-    for (n = 0; n < num_names; ++n) {
-       if (!strcmp(p->ext_Names[n], name))
-           break;
+    if (name != 0) {
+       for (n = 0; n < num_names; ++n) {
+           if (!strcmp(p->ext_Names[n], name))
+               break;
+       }
+    } else {
+       n = num_names + 1;
     }
     return n;
 }
@@ -320,6 +325,11 @@ name_of_captype(int which)
     return result;
 }
 
+#define valid_TERMTYPE2(p) \
+       ((p) != 0 && \
+        (p)->term_names != 0 && \
+        (p)->ext_Names != 0)
+
 /*
  * Disallow changing the type of an extended capability when doing a "use"
  * if one or the other is a string.
@@ -328,42 +338,45 @@ static int
 invalid_merge(TERMTYPE2 *to, TERMTYPE2 *from)
 {
     int rc = FALSE;
-    char *to_name = _nc_first_name(to->term_names);
-    char *from_name = strdup(_nc_first_name(from->term_names));
-    unsigned num_names = NUM_EXT_NAMES(from);
-    unsigned n;
-
-    for (n = 0; n < num_names; ++n) {
-       const char *capname = from->ext_Names[n];
-       int tt = extended_captype(to, find_capname(to, capname));
-       int tf = extended_captype(from, n);
-
-       if (tt <= STRING
-           && tf <= STRING
-           && (tt == STRING) != (tf == STRING)) {
-           if (from_name != 0 && strcmp(to_name, from_name)) {
-               DEBUG(2,
-                     ("merge of %s to %s changes type of %s from %s to %s",
-                      from_name,
-                      to_name,
-                      from->ext_Names[n],
-                      name_of_captype(tf),
-                      name_of_captype(tt)));
-           } else {
-               DEBUG(2, ("merge of %s changes type of %s from %s to %s",
-                         to_name,
-                         from->ext_Names[n],
-                         name_of_captype(tf),
-                         name_of_captype(tt)));
+    if (valid_TERMTYPE2(to)
+       && valid_TERMTYPE2(from)) {
+       char *to_name = _nc_first_name(to->term_names);
+       char *from_name = strdup(_nc_first_name(from->term_names));
+       unsigned num_names = NUM_EXT_NAMES(from);
+       unsigned n;
+
+       for (n = 0; n < num_names; ++n) {
+           const char *capname = from->ext_Names[n];
+           int tt = extended_captype(to, find_capname(to, capname));
+           int tf = extended_captype(from, n);
+
+           if (tt <= STRING
+               && tf <= STRING
+               && (tt == STRING) != (tf == STRING)) {
+               if (from_name != 0 && strcmp(to_name, from_name)) {
+                   DEBUG(2,
+                         ("merge of %s to %s changes type of %s from %s to %s",
+                          from_name,
+                          to_name,
+                          from->ext_Names[n],
+                          name_of_captype(tf),
+                          name_of_captype(tt)));
+               } else {
+                   DEBUG(2, ("merge of %s changes type of %s from %s to %s",
+                             to_name,
+                             from->ext_Names[n],
+                             name_of_captype(tf),
+                             name_of_captype(tt)));
+               }
+               _nc_warning("merge changes type of %s from %s to %s",
+                           from->ext_Names[n],
+                           name_of_captype(tf),
+                           name_of_captype(tt));
+               rc = TRUE;
            }
-           _nc_warning("merge changes type of %s from %s to %s",
-                       from->ext_Names[n],
-                       name_of_captype(tf),
-                       name_of_captype(tt));
-           rc = TRUE;
        }
+       free(from_name);
     }
-    free(from_name);
     return rc;
 }
 #define validate_merge(p, q) \
@@ -425,6 +438,9 @@ _nc_resolve_uses2(bool fullresolve, bool literal)
            char *lookfor = qp->uses[i].name;
            long lookline = qp->uses[i].line;
 
+           if (lookfor == 0)
+               continue;
+
            foundit = FALSE;
 
            _nc_set_type(child);
@@ -502,7 +518,8 @@ _nc_resolve_uses2(bool fullresolve, bool literal)
                     * subsequent pass.
                     */
                    for (i = 0; i < qp->nuses; i++)
-                       if (qp->uses[i].link->nuses) {
+                       if (qp->uses[i].link
+                           && qp->uses[i].link->nuses) {
                            DEBUG(2, ("%s: use entry %d unresolved",
                                      _nc_first_name(qp->tterm.term_names), i));
                            goto incomplete;
@@ -708,6 +725,6 @@ NCURSES_EXPORT(void)
 _nc_free_tic(int code)
 {
     _nc_leaks_tic();
-    _nc_free_tinfo(code);
+    exit_terminfo(code);
 }
 #endif