X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftinfo%2Fobsolete.c;h=972a9a180e78068827b5a7a607a3fb36659db7b7;hp=9b62917d7ccf8e9e6b804dc46d18fc871ec4cdd7;hb=HEAD;hpb=2403eaecbe5b488358485a3deb351ab552af8791;ds=sidebyside

diff --git a/ncurses/tinfo/obsolete.c b/ncurses/tinfo/obsolete.c
index 9b62917d..cc62f18c 100644
--- a/ncurses/tinfo/obsolete.c
+++ b/ncurses/tinfo/obsolete.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 2013 Free Software Foundation, Inc.                        *
+ * Copyright 2020,2023 Thomas E. Dickey                                     *
+ * Copyright 2013-2014,2016 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            *
@@ -27,19 +28,19 @@
  ****************************************************************************/
 
 /****************************************************************************
- *  Author: Thomas E. Dickey                        2013                    *
+ *  Author: Thomas E. Dickey                        2013-on                 *
  ****************************************************************************/
 
 /*
-**	Support for obsolete features.
+**	Support for obsolete/unusual features.
 */
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: obsolete.c,v 1.1 2013/01/26 22:07:51 tom Exp $")
+MODULE_ID("$Id: obsolete.c,v 1.11 2023/10/21 15:38:47 tom Exp $")
 
 /*
- * Obsolete entrypoint retained for binary compatbility.
+ * Obsolete entrypoint retained for binary compatibility.
  */
 NCURSES_EXPORT(void)
 NCURSES_SP_NAME(_nc_set_buffer) (NCURSES_SP_DCLx FILE *ofp, int buffered)
@@ -68,7 +69,7 @@ _nc_strdup(const char *s)
 	size_t need = strlen(s);
 	result = malloc(need + 1);
 	if (result != 0) {
-	    strcpy(result, s);
+	    _nc_STRCPY(result, s, need);
 	}
     }
     return result;
@@ -100,3 +101,235 @@ _nc_memmove(void *s1, const void *s2, size_t n)
     return s1;
 }
 #endif /* USE_MY_MEMMOVE */
+
+#ifdef EXP_XTERM_1005
+NCURSES_EXPORT(int)
+_nc_conv_to_utf8(unsigned char *target, unsigned source, unsigned limit)
+{
+#define CH(n) UChar((source) >> ((n) * 8))
+    int rc = 0;
+
+    if (source <= 0x0000007f)
+	rc = 1;
+    else if (source <= 0x000007ff)
+	rc = 2;
+    else if (source <= 0x0000ffff)
+	rc = 3;
+    else if (source <= 0x001fffff)
+	rc = 4;
+    else if (source <= 0x03ffffff)
+	rc = 5;
+    else			/* (source <= 0x7fffffff) */
+	rc = 6;
+
+    if ((unsigned) rc > limit) {	/* whatever it is, we cannot decode it */
+	rc = 0;
+    }
+
+    if (target != 0) {
+	switch (rc) {
+	case 1:
+	    target[0] = CH(0);
+	    break;
+
+	case 2:
+	    target[1] = UChar(0x80 | (CH(0) & 0x3f));
+	    target[0] = UChar(0xc0 | (CH(0) >> 6) | ((CH(1) & 0x07) << 2));
+	    break;
+
+	case 3:
+	    target[2] = UChar(0x80 | (CH(0) & 0x3f));
+	    target[1] = UChar(0x80 | (CH(0) >> 6) | ((CH(1) & 0x0f) << 2));
+	    target[0] = UChar(0xe0 | ((int) (CH(1) & 0xf0) >> 4));
+	    break;
+
+	case 4:
+	    target[3] = UChar(0x80 | (CH(0) & 0x3f));
+	    target[2] = UChar(0x80 | (CH(0) >> 6) | ((CH(1) & 0x0f) << 2));
+	    target[1] = UChar(0x80 |
+			      ((int) (CH(1) & 0xf0) >> 4) |
+			      ((int) (CH(2) & 0x03) << 4));
+	    target[0] = UChar(0xf0 | ((int) (CH(2) & 0x1f) >> 2));
+	    break;
+
+	case 5:
+	    target[4] = UChar(0x80 | (CH(0) & 0x3f));
+	    target[3] = UChar(0x80 | (CH(0) >> 6) | ((CH(1) & 0x0f) << 2));
+	    target[2] = UChar(0x80 |
+			      ((int) (CH(1) & 0xf0) >> 4) |
+			      ((int) (CH(2) & 0x03) << 4));
+	    target[1] = UChar(0x80 | (CH(2) >> 2));
+	    target[0] = UChar(0xf8 | (CH(3) & 0x03));
+	    break;
+
+	case 6:
+	    target[5] = UChar(0x80 | (CH(0) & 0x3f));
+	    target[4] = UChar(0x80 | (CH(0) >> 6) | ((CH(1) & 0x0f) << 2));
+	    target[3] = UChar(0x80 | (CH(1) >> 4) | ((CH(2) & 0x03) << 4));
+	    target[2] = UChar(0x80 | (CH(2) >> 2));
+	    target[1] = UChar(0x80 | (CH(3) & 0x3f));
+	    target[0] = UChar(0xfc | ((int) (CH(3) & 0x40) >> 6));
+	    break;
+	}
+    }
+
+    return rc;			/* number of bytes needed in target */
+#undef CH
+}
+
+NCURSES_EXPORT(int)
+_nc_conv_to_utf32(unsigned *target, const char *source, unsigned limit)
+{
+#define CH(n) UChar((*target) >> ((n) * 8))
+    int rc = 0;
+    int j;
+    unsigned mask = 0;
+
+    /*
+     * Find the number of bytes we will need from the source.
+     */
+    if ((*source & 0x80) == 0) {
+	rc = 1;
+	mask = (unsigned) *source;
+    } else if ((*source & 0xe0) == 0xc0) {
+	rc = 2;
+	mask = (unsigned) (*source & 0x1f);
+    } else if ((*source & 0xf0) == 0xe0) {
+	rc = 3;
+	mask = (unsigned) (*source & 0x0f);
+    } else if ((*source & 0xf8) == 0xf0) {
+	rc = 4;
+	mask = (unsigned) (*source & 0x07);
+    } else if ((*source & 0xfc) == 0xf8) {
+	rc = 5;
+	mask = (unsigned) (*source & 0x03);
+    } else if ((*source & 0xfe) == 0xfc) {
+	rc = 6;
+	mask = (unsigned) (*source & 0x01);
+    }
+
+    if ((unsigned) rc > limit) {	/* whatever it is, we cannot decode it */
+	rc = 0;
+    }
+
+    /*
+     * sanity-check.
+     */
+    if (rc > 1) {
+	for (j = 1; j < rc; j++) {
+	    if ((source[j] & 0xc0) != 0x80)
+		break;
+	}
+	if (j != rc) {
+	    rc = 0;
+	}
+    }
+
+    if (target != 0) {
+	int shift = 0;
+	*target = 0;
+	for (j = 1; j < rc; j++) {
+	    *target |= (unsigned) (source[rc - j] & 0x3f) << shift;
+	    shift += 6;
+	}
+	*target |= mask << shift;
+    }
+    return rc;
+#undef CH
+}
+#endif /* EXP_XTERM_1005 */
+
+#ifdef EXP_OOM_TESTING
+/*
+ * Out-of-memory testing, suitable for checking if initialization (and limited
+ * running) recovers from errors due to insufficient memory.  In practice, this
+ * is unlikely except with artificially constructed tests (or poorly behaved
+ * applications).
+ */
+#undef malloc
+#undef calloc
+#undef realloc
+#undef free
+#undef strdup
+
+#define TR_OOM(stmt) T(stmt)
+
+static long oom_limit = -1;
+static long oom_count = 0;
+
+static bool
+oom_check(void)
+{
+    static bool initialized = FALSE;
+    static bool triggered = FALSE;
+    bool result = FALSE;
+
+    if (!initialized) {
+	char *env = getenv("NCURSES_OOM_TESTING");
+	initialized = TRUE;
+	if (env != NULL) {
+	    char *check;
+	    oom_limit = strtol(env, &check, 0);
+	    if (check != NULL && *check != '\0')
+		oom_limit = 0;
+	}
+    }
+    ++oom_count;
+    if (oom_limit >= 0) {
+	result = (oom_count > oom_limit);
+	if (result && !triggered) {
+	    triggered = TRUE;
+	    TR_OOM(("out-of-memory"));
+	}
+    }
+    return result;
+}
+
+NCURSES_EXPORT(void *)
+_nc_oom_malloc(size_t size)
+{
+    char *result = (oom_check()
+		    ? NULL
+		    : malloc(size));
+    TR_OOM(("oom #%ld malloc(%ld) %p", oom_count, size, result));
+    return result;
+}
+
+NCURSES_EXPORT(void *)
+_nc_oom_calloc(size_t nmemb, size_t size)
+{
+    char *result = (oom_check()
+		    ? NULL
+		    : calloc(nmemb, size));
+    TR_OOM(("oom #%ld calloc(%ld, %ld) %p", oom_count, nmemb, size, result));
+    return result;
+}
+
+NCURSES_EXPORT(void *)
+_nc_oom_realloc(void *ptr, size_t size)
+{
+    char *result = (oom_check()
+		    ? NULL
+		    : realloc(ptr, size));
+    TR_OOM(("oom #%ld realloc(%p, %ld) %p", oom_count, ptr, size, result));
+    return result;
+}
+
+NCURSES_EXPORT(void)
+_nc_oom_free(void *ptr)
+{
+    ++oom_count;
+    TR_OOM(("oom #%ld free(%p)", oom_count, ptr));
+    free(ptr);
+}
+
+NCURSES_EXPORT(char *)
+_nc_oom_strdup(const char *ptr)
+{
+    char *result = (oom_check()
+		    ? NULL
+		    : strdup(ptr));
+    TR_OOM(("oom #%ld strdup(%p) %p", oom_count, ptr, result));
+    return result;
+}
+#endif /* EXP_OOM_TESTING */