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-rw-r--r--ncurses/tinfo/comp_parse.c490
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diff --git a/ncurses/tinfo/comp_parse.c b/ncurses/tinfo/comp_parse.c
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+/****************************************************************************
+ * Copyright (c) 1998-2006,2007 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 *
+ ****************************************************************************/
+
+/*
+ * comp_parse.c -- parser driver loop and use handling.
+ *
+ * _nc_read_entry_source(FILE *, literal, bool, bool (*hook)())
+ * _nc_resolve_uses2(void)
+ * _nc_free_entries(void)
+ *
+ * Use this code by calling _nc_read_entry_source() on as many source
+ * files as you like (either terminfo or termcap syntax). If you
+ * want use-resolution, call _nc_resolve_uses2(). To free the list
+ * storage, do _nc_free_entries().
+ *
+ */
+
+#include <curses.priv.h>
+
+#include <ctype.h>
+
+#include <tic.h>
+#include <term_entry.h>
+
+MODULE_ID("$Id: comp_parse.c,v 1.68 2007/11/03 20:41:46 tom Exp $")
+
+static void sanity_check2(TERMTYPE *, bool);
+NCURSES_IMPEXP void NCURSES_API(*_nc_check_termtype2) (TERMTYPE *, bool) = sanity_check2;
+
+/* obsolete: 20040705 */
+static void sanity_check(TERMTYPE *);
+NCURSES_IMPEXP void NCURSES_API(*_nc_check_termtype) (TERMTYPE *) = sanity_check;
+
+static void
+enqueue(ENTRY * ep)
+/* add an entry to the in-core list */
+{
+ ENTRY *newp = _nc_copy_entry(ep);
+
+ if (newp == 0)
+ _nc_err_abort(MSG_NO_MEMORY);
+
+ newp->last = _nc_tail;
+ _nc_tail = newp;
+
+ newp->next = 0;
+ if (newp->last)
+ newp->last->next = newp;
+}
+
+static char *
+force_bar(char *dst, char *src)
+{
+ if (strchr(src, '|') == 0) {
+ size_t len = strlen(src);
+ if (len > MAX_NAME_SIZE)
+ len = MAX_NAME_SIZE;
+ (void) strncpy(dst, src, len);
+ (void) strcpy(dst + len, "|");
+ src = dst;
+ }
+ return src;
+}
+
+NCURSES_EXPORT(bool)
+_nc_entry_match(char *n1, char *n2)
+/* do any of the aliases in a pair of terminal names match? */
+{
+ char *pstart, *qstart, *pend, *qend;
+ char nc1[MAX_NAME_SIZE + 2], nc2[MAX_NAME_SIZE + 2];
+
+ n1 = force_bar(nc1, n1);
+ n2 = force_bar(nc2, n2);
+
+ for (pstart = n1; (pend = strchr(pstart, '|')); pstart = pend + 1)
+ for (qstart = n2; (qend = strchr(qstart, '|')); qstart = qend + 1)
+ if ((pend - pstart == qend - qstart)
+ && memcmp(pstart, qstart, (size_t) (pend - pstart)) == 0)
+ return (TRUE);
+
+ return (FALSE);
+}
+
+/****************************************************************************
+ *
+ * Entry compiler and resolution logic
+ *
+ ****************************************************************************/
+
+NCURSES_EXPORT(void)
+_nc_read_entry_source(FILE *fp, char *buf,
+ int literal, bool silent,
+ bool(*hook) (ENTRY *))
+/* slurp all entries in the given file into core */
+{
+ ENTRY thisentry;
+ bool oldsuppress = _nc_suppress_warnings;
+ int immediate = 0;
+
+ if (silent)
+ _nc_suppress_warnings = TRUE; /* shut the lexer up, too */
+
+ _nc_reset_input(fp, buf);
+ for (;;) {
+ memset(&thisentry, 0, sizeof(thisentry));
+ if (_nc_parse_entry(&thisentry, literal, silent) == ERR)
+ break;
+ if (!isalnum(UChar(thisentry.tterm.term_names[0])))
+ _nc_err_abort("terminal names must start with letter or digit");
+
+ /*
+ * This can be used for immediate compilation of entries with no "use="
+ * references to disk. That avoids consuming a lot of memory when the
+ * resolution code could fetch entries off disk.
+ */
+ if (hook != NULLHOOK && (*hook) (&thisentry)) {
+ immediate++;
+ } else {
+ enqueue(&thisentry);
+ /*
+ * The enqueued entry is copied with _nc_copy_termtype(), so we can
+ * free some of the data from thisentry, i.e., the arrays.
+ */
+ FreeIfNeeded(thisentry.tterm.Booleans);
+ FreeIfNeeded(thisentry.tterm.Numbers);
+ FreeIfNeeded(thisentry.tterm.Strings);
+#if NCURSES_XNAMES
+ FreeIfNeeded(thisentry.tterm.ext_Names);
+#endif
+ }
+ }
+
+ if (_nc_tail) {
+ /* set up the head pointer */
+ for (_nc_head = _nc_tail; _nc_head->last; _nc_head = _nc_head->last)
+ continue;
+
+ DEBUG(1, ("head = %s", _nc_head->tterm.term_names));
+ DEBUG(1, ("tail = %s", _nc_tail->tterm.term_names));
+ }
+#ifdef TRACE
+ else if (!immediate)
+ DEBUG(1, ("no entries parsed"));
+#endif
+
+ _nc_suppress_warnings = oldsuppress;
+}
+
+NCURSES_EXPORT(int)
+_nc_resolve_uses2(bool fullresolve, bool literal)
+/* try to resolve all use capabilities */
+{
+ ENTRY *qp, *rp, *lastread = 0;
+ bool keepgoing;
+ int i, unresolved, total_unresolved, multiples;
+
+ DEBUG(2, ("RESOLUTION BEGINNING"));
+
+ /*
+ * Check for multiple occurrences of the same name.
+ */
+ multiples = 0;
+ for_entry_list(qp) {
+ int matchcount = 0;
+
+ for_entry_list(rp) {
+ if (qp > rp
+ && _nc_entry_match(qp->tterm.term_names, rp->tterm.term_names)) {
+ matchcount++;
+ if (matchcount == 1) {
+ (void) fprintf(stderr, "Name collision between %s",
+ _nc_first_name(qp->tterm.term_names));
+ multiples++;
+ }
+ if (matchcount >= 1)
+ (void) fprintf(stderr, " %s", _nc_first_name(rp->tterm.term_names));
+ }
+ }
+ if (matchcount >= 1)
+ (void) putc('\n', stderr);
+ }
+ if (multiples > 0)
+ return (FALSE);
+
+ DEBUG(2, ("NO MULTIPLE NAME OCCURRENCES"));
+
+ /*
+ * First resolution stage: compute link pointers corresponding to names.
+ */
+ total_unresolved = 0;
+ _nc_curr_col = -1;
+ for_entry_list(qp) {
+ unresolved = 0;
+ for (i = 0; i < qp->nuses; i++) {
+ bool foundit;
+ char *child = _nc_first_name(qp->tterm.term_names);
+ char *lookfor = qp->uses[i].name;
+ long lookline = qp->uses[i].line;
+
+ foundit = FALSE;
+
+ _nc_set_type(child);
+
+ /* first, try to resolve from in-core records */
+ for_entry_list(rp) {
+ if (rp != qp
+ && _nc_name_match(rp->tterm.term_names, lookfor, "|")) {
+ DEBUG(2, ("%s: resolving use=%s (in core)",
+ child, lookfor));
+
+ qp->uses[i].link = rp;
+ foundit = TRUE;
+ }
+ }
+
+ /* if that didn't work, try to merge in a compiled entry */
+ if (!foundit) {
+ TERMTYPE thisterm;
+ char filename[PATH_MAX];
+
+ memset(&thisterm, 0, sizeof(thisterm));
+ if (_nc_read_entry(lookfor, filename, &thisterm) == 1) {
+ DEBUG(2, ("%s: resolving use=%s (compiled)",
+ child, lookfor));
+
+ rp = typeMalloc(ENTRY, 1);
+ if (rp == 0)
+ _nc_err_abort(MSG_NO_MEMORY);
+ rp->tterm = thisterm;
+ rp->nuses = 0;
+ rp->next = lastread;
+ lastread = rp;
+
+ qp->uses[i].link = rp;
+ foundit = TRUE;
+ }
+ }
+
+ /* no good, mark this one unresolvable and complain */
+ if (!foundit) {
+ unresolved++;
+ total_unresolved++;
+
+ _nc_curr_line = lookline;
+ _nc_warning("resolution of use=%s failed", lookfor);
+ qp->uses[i].link = 0;
+ }
+ }
+ }
+ if (total_unresolved) {
+ /* free entries read in off disk */
+ _nc_free_entries(lastread);
+ return (FALSE);
+ }
+
+ DEBUG(2, ("NAME RESOLUTION COMPLETED OK"));
+
+ /*
+ * OK, at this point all (char *) references in `name' members
+ * have been successfully converted to (ENTRY *) pointers in
+ * `link' members. Time to do the actual merges.
+ */
+ if (fullresolve) {
+ do {
+ TERMTYPE merged;
+
+ keepgoing = FALSE;
+
+ for_entry_list(qp) {
+ if (qp->nuses > 0) {
+ DEBUG(2, ("%s: attempting merge",
+ _nc_first_name(qp->tterm.term_names)));
+ /*
+ * If any of the use entries we're looking for is
+ * incomplete, punt. We'll catch this entry on a
+ * subsequent pass.
+ */
+ for (i = 0; i < qp->nuses; i++)
+ if (qp->uses[i].link->nuses) {
+ DEBUG(2, ("%s: use entry %d unresolved",
+ _nc_first_name(qp->tterm.term_names), i));
+ goto incomplete;
+ }
+
+ /*
+ * First, make sure there is no garbage in the
+ * merge block. As a side effect, copy into
+ * the merged entry the name field and string
+ * table pointer.
+ */
+ _nc_copy_termtype(&merged, &(qp->tterm));
+
+ /*
+ * Now merge in each use entry in the proper
+ * (reverse) order.
+ */
+ for (; qp->nuses; qp->nuses--)
+ _nc_merge_entry(&merged,
+ &qp->uses[qp->nuses - 1].link->tterm);
+
+ /*
+ * Now merge in the original entry.
+ */
+ _nc_merge_entry(&merged, &qp->tterm);
+
+ /*
+ * Replace the original entry with the merged one.
+ */
+ FreeIfNeeded(qp->tterm.Booleans);
+ FreeIfNeeded(qp->tterm.Numbers);
+ FreeIfNeeded(qp->tterm.Strings);
+#if NCURSES_XNAMES
+ FreeIfNeeded(qp->tterm.ext_Names);
+#endif
+ qp->tterm = merged;
+ _nc_wrap_entry(qp, TRUE);
+
+ /*
+ * We know every entry is resolvable because name resolution
+ * didn't bomb. So go back for another pass.
+ */
+ /* FALLTHRU */
+ incomplete:
+ keepgoing = TRUE;
+ }
+ }
+ } while
+ (keepgoing);
+
+ DEBUG(2, ("MERGES COMPLETED OK"));
+ }
+
+ /*
+ * We'd like to free entries read in off disk at this point, but can't.
+ * The merge_entry() code doesn't copy the strings in the use entries,
+ * it just aliases them. If this ever changes, do a
+ * free_entries(lastread) here.
+ */
+
+ DEBUG(2, ("RESOLUTION FINISHED"));
+
+ if (fullresolve)
+ if (_nc_check_termtype != 0) {
+ _nc_curr_col = -1;
+ for_entry_list(qp) {
+ _nc_curr_line = qp->startline;
+ _nc_set_type(_nc_first_name(qp->tterm.term_names));
+ _nc_check_termtype2(&qp->tterm, literal);
+ }
+ DEBUG(2, ("SANITY CHECK FINISHED"));
+ }
+
+ return (TRUE);
+}
+
+/* obsolete: 20040705 */
+NCURSES_EXPORT(int)
+_nc_resolve_uses(bool fullresolve)
+{
+ return _nc_resolve_uses2(fullresolve, FALSE);
+}
+
+/*
+ * This bit of legerdemain turns all the terminfo variable names into
+ * references to locations in the arrays Booleans, Numbers, and Strings ---
+ * precisely what's needed.
+ */
+
+#undef CUR
+#define CUR tp->
+
+static void
+sanity_check2(TERMTYPE *tp, bool literal)
+{
+ if (!PRESENT(exit_attribute_mode)) {
+#ifdef __UNUSED__ /* this casts too wide a net */
+ bool terminal_entry = !strchr(tp->term_names, '+');
+ if (terminal_entry &&
+ (PRESENT(set_attributes)
+ || PRESENT(enter_standout_mode)
+ || PRESENT(enter_underline_mode)
+ || PRESENT(enter_blink_mode)
+ || PRESENT(enter_bold_mode)
+ || PRESENT(enter_dim_mode)
+ || PRESENT(enter_secure_mode)
+ || PRESENT(enter_protected_mode)
+ || PRESENT(enter_reverse_mode)))
+ _nc_warning("no exit_attribute_mode");
+#endif /* __UNUSED__ */
+ PAIRED(enter_standout_mode, exit_standout_mode);
+ PAIRED(enter_underline_mode, exit_underline_mode);
+ }
+
+ /* we do this check/fix in postprocess_termcap(), but some packagers
+ * prefer to bypass it...
+ */
+ if (!literal) {
+ if (acs_chars == 0
+ && enter_alt_charset_mode != 0
+ && exit_alt_charset_mode != 0)
+ acs_chars = strdup(VT_ACSC);
+ ANDMISSING(enter_alt_charset_mode, acs_chars);
+ ANDMISSING(exit_alt_charset_mode, acs_chars);
+ }
+
+ /* listed in structure-member order of first argument */
+ PAIRED(enter_alt_charset_mode, exit_alt_charset_mode);
+ ANDMISSING(enter_blink_mode, exit_attribute_mode);
+ ANDMISSING(enter_bold_mode, exit_attribute_mode);
+ PAIRED(exit_ca_mode, enter_ca_mode);
+ PAIRED(enter_delete_mode, exit_delete_mode);
+ ANDMISSING(enter_dim_mode, exit_attribute_mode);
+ PAIRED(enter_insert_mode, exit_insert_mode);
+ ANDMISSING(enter_secure_mode, exit_attribute_mode);
+ ANDMISSING(enter_protected_mode, exit_attribute_mode);
+ ANDMISSING(enter_reverse_mode, exit_attribute_mode);
+ PAIRED(from_status_line, to_status_line);
+ PAIRED(meta_off, meta_on);
+
+ PAIRED(prtr_on, prtr_off);
+ PAIRED(save_cursor, restore_cursor);
+ PAIRED(enter_xon_mode, exit_xon_mode);
+ PAIRED(enter_am_mode, exit_am_mode);
+ ANDMISSING(label_off, label_on);
+#ifdef remove_clock
+ PAIRED(display_clock, remove_clock);
+#endif
+ ANDMISSING(set_color_pair, initialize_pair);
+}
+
+/* obsolete: 20040705 */
+static void
+sanity_check(TERMTYPE *tp)
+{
+ sanity_check2(tp, FALSE);
+}
+
+#if NO_LEAKS
+NCURSES_EXPORT(void)
+_nc_leaks_tic(void)
+{
+ _nc_alloc_entry_leaks();
+ _nc_captoinfo_leaks();
+ _nc_comp_captab_leaks();
+ _nc_comp_scan_leaks();
+#if BROKEN_LINKER || USE_REENTRANT
+ _nc_names_leaks();
+ _nc_codes_leaks();
+#endif
+ _nc_tic_expand(0, FALSE, 0);
+}
+
+NCURSES_EXPORT(void)
+_nc_free_tic(int code)
+{
+ _nc_leaks_tic();
+ _nc_free_tinfo(code);
+}
+#endif