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-rw-r--r--ncurses/tinfo/alloc_entry.c289
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diff --git a/ncurses/tinfo/alloc_entry.c b/ncurses/tinfo/alloc_entry.c
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+/****************************************************************************
+ * 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 *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
+ * and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996-on *
+ ****************************************************************************/
+
+/*
+ * alloc_entry.c -- allocation functions for terminfo entries
+ *
+ * _nc_copy_entry()
+ * _nc_init_entry()
+ * _nc_merge_entry()
+ * _nc_save_str()
+ * _nc_wrap_entry()
+ *
+ */
+
+#include <curses.priv.h>
+
+#include <tic.h>
+#include <term_entry.h>
+
+MODULE_ID("$Id: alloc_entry.c,v 1.47 2006/12/16 19:06:58 tom Exp $")
+
+#define ABSENT_OFFSET -1
+#define CANCELLED_OFFSET -2
+
+#define MAX_STRTAB 4096 /* documented maximum entry size */
+
+static char *stringbuf; /* buffer for string capabilities */
+static size_t next_free; /* next free character in stringbuf */
+
+NCURSES_EXPORT(void)
+_nc_init_entry(TERMTYPE *const tp)
+/* initialize a terminal type data block */
+{
+ unsigned i;
+
+#if NO_LEAKS
+ if (tp == 0 && stringbuf != 0) {
+ FreeAndNull(stringbuf);
+ return;
+ }
+#endif
+
+ if (stringbuf == 0)
+ stringbuf = (char *) malloc(MAX_STRTAB);
+
+#if NCURSES_XNAMES
+ tp->num_Booleans = BOOLCOUNT;
+ tp->num_Numbers = NUMCOUNT;
+ tp->num_Strings = STRCOUNT;
+ tp->ext_Booleans = 0;
+ tp->ext_Numbers = 0;
+ tp->ext_Strings = 0;
+#endif
+ if (tp->Booleans == 0)
+ tp->Booleans = typeMalloc(NCURSES_SBOOL, BOOLCOUNT);
+ if (tp->Numbers == 0)
+ tp->Numbers = typeMalloc(short, NUMCOUNT);
+ if (tp->Strings == 0)
+ tp->Strings = typeMalloc(char *, STRCOUNT);
+
+ for_each_boolean(i, tp)
+ tp->Booleans[i] = FALSE;
+
+ for_each_number(i, tp)
+ tp->Numbers[i] = ABSENT_NUMERIC;
+
+ for_each_string(i, tp)
+ tp->Strings[i] = ABSENT_STRING;
+
+ next_free = 0;
+}
+
+NCURSES_EXPORT(ENTRY *)
+_nc_copy_entry(ENTRY * oldp)
+{
+ ENTRY *newp = typeCalloc(ENTRY, 1);
+
+ if (newp != 0) {
+ *newp = *oldp;
+ _nc_copy_termtype(&(newp->tterm), &(oldp->tterm));
+ }
+ return newp;
+}
+
+/* save a copy of string in the string buffer */
+NCURSES_EXPORT(char *)
+_nc_save_str(const char *const string)
+{
+ char *result = 0;
+ size_t old_next_free = next_free;
+ size_t len = strlen(string) + 1;
+
+ if (len == 1 && next_free != 0) {
+ /*
+ * Cheat a little by making an empty string point to the end of the
+ * previous string.
+ */
+ if (next_free < MAX_STRTAB) {
+ result = (stringbuf + next_free - 1);
+ }
+ } else if (next_free + len < MAX_STRTAB) {
+ strcpy(&stringbuf[next_free], string);
+ DEBUG(7, ("Saved string %s", _nc_visbuf(string)));
+ DEBUG(7, ("at location %d", (int) next_free));
+ next_free += len;
+ result = (stringbuf + old_next_free);
+ } else {
+ _nc_warning("Too much data, some is lost");
+ }
+ return result;
+}
+
+NCURSES_EXPORT(void)
+_nc_wrap_entry(ENTRY * const ep, bool copy_strings)
+/* copy the string parts to allocated storage, preserving pointers to it */
+{
+ int offsets[MAX_ENTRY_SIZE / 2], useoffsets[MAX_USES];
+ unsigned i, n;
+ unsigned nuses = ep->nuses;
+ TERMTYPE *tp = &(ep->tterm);
+
+ if (copy_strings) {
+ next_free = 0; /* clear static storage */
+
+ /* copy term_names, Strings, uses */
+ tp->term_names = _nc_save_str(tp->term_names);
+ for_each_string(i, tp) {
+ if (tp->Strings[i] != ABSENT_STRING &&
+ tp->Strings[i] != CANCELLED_STRING) {
+ tp->Strings[i] = _nc_save_str(tp->Strings[i]);
+ }
+ }
+
+ for (i = 0; i < nuses; i++) {
+ if (ep->uses[i].name == 0) {
+ ep->uses[i].name = _nc_save_str(ep->uses[i].name);
+ }
+ }
+
+ free(tp->str_table);
+ }
+
+ n = tp->term_names - stringbuf;
+ for_each_string(i, &(ep->tterm)) {
+ if (tp->Strings[i] == ABSENT_STRING)
+ offsets[i] = ABSENT_OFFSET;
+ else if (tp->Strings[i] == CANCELLED_STRING)
+ offsets[i] = CANCELLED_OFFSET;
+ else
+ offsets[i] = tp->Strings[i] - stringbuf;
+ }
+
+ for (i = 0; i < nuses; i++) {
+ if (ep->uses[i].name == 0)
+ useoffsets[i] = ABSENT_OFFSET;
+ else
+ useoffsets[i] = ep->uses[i].name - stringbuf;
+ }
+
+ if ((tp->str_table = typeMalloc(char, next_free)) == (char *) 0)
+ _nc_err_abort(MSG_NO_MEMORY);
+ (void) memcpy(tp->str_table, stringbuf, next_free);
+
+ tp->term_names = tp->str_table + n;
+ for_each_string(i, &(ep->tterm)) {
+ if (offsets[i] == ABSENT_OFFSET)
+ tp->Strings[i] = ABSENT_STRING;
+ else if (offsets[i] == CANCELLED_OFFSET)
+ tp->Strings[i] = CANCELLED_STRING;
+ else
+ tp->Strings[i] = tp->str_table + offsets[i];
+ }
+
+#if NCURSES_XNAMES
+ if (!copy_strings) {
+ if ((n = NUM_EXT_NAMES(tp)) != 0) {
+ unsigned length = 0;
+ for (i = 0; i < n; i++) {
+ length += strlen(tp->ext_Names[i]) + 1;
+ offsets[i] = tp->ext_Names[i] - stringbuf;
+ }
+ if ((tp->ext_str_table = typeMalloc(char, length)) == 0)
+ _nc_err_abort(MSG_NO_MEMORY);
+ for (i = 0, length = 0; i < n; i++) {
+ tp->ext_Names[i] = tp->ext_str_table + length;
+ strcpy(tp->ext_Names[i], stringbuf + offsets[i]);
+ length += strlen(tp->ext_Names[i]) + 1;
+ }
+ }
+ }
+#endif
+
+ for (i = 0; i < nuses; i++) {
+ if (useoffsets[i] == ABSENT_OFFSET)
+ ep->uses[i].name = 0;
+ else
+ ep->uses[i].name = (tp->str_table + useoffsets[i]);
+ }
+}
+
+NCURSES_EXPORT(void)
+_nc_merge_entry(TERMTYPE *const to, TERMTYPE *const from)
+/* merge capabilities from `from' entry into `to' entry */
+{
+ unsigned i;
+
+#if NCURSES_XNAMES
+ _nc_align_termtype(to, from);
+#endif
+ for_each_boolean(i, from) {
+ if (to->Booleans[i] != (char) CANCELLED_BOOLEAN) {
+ int mergebool = from->Booleans[i];
+
+ if (mergebool == CANCELLED_BOOLEAN)
+ to->Booleans[i] = FALSE;
+ else if (mergebool == TRUE)
+ to->Booleans[i] = mergebool;
+ }
+ }
+
+ for_each_number(i, from) {
+ if (to->Numbers[i] != CANCELLED_NUMERIC) {
+ int mergenum = from->Numbers[i];
+
+ if (mergenum == CANCELLED_NUMERIC)
+ to->Numbers[i] = ABSENT_NUMERIC;
+ else if (mergenum != ABSENT_NUMERIC)
+ to->Numbers[i] = mergenum;
+ }
+ }
+
+ /*
+ * Note: the copies of strings this makes don't have their own
+ * storage. This is OK right now, but will be a problem if we
+ * we ever want to deallocate entries.
+ */
+ for_each_string(i, from) {
+ if (to->Strings[i] != CANCELLED_STRING) {
+ char *mergestring = from->Strings[i];
+
+ if (mergestring == CANCELLED_STRING)
+ to->Strings[i] = ABSENT_STRING;
+ else if (mergestring != ABSENT_STRING)
+ to->Strings[i] = mergestring;
+ }
+ }
+}
+
+#if NO_LEAKS
+NCURSES_EXPORT(void)
+_nc_alloc_entry_leaks(void)
+{
+ if (stringbuf != 0) {
+ FreeAndNull(stringbuf);
+ }
+ next_free = 0;
+}
+#endif