/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2001,2002 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 *
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * *
+ * some of the code in here was contributed by: *
+ * Magnus Bengtsson, d6mbeng@dtek.chalmers.se (Nov'93) *
****************************************************************************/
+#define __INTERNAL_CAPS_VISIBLE
#include <curses.priv.h>
#include <termcap.h>
#include <tic.h>
+#include <ctype.h>
-#define __INTERNAL_CAPS_VISIBLE
#include <term_entry.h>
-MODULE_ID("$Id: lib_termcap.c,v 1.29 1999/09/05 01:06:43 tom Exp $")
+MODULE_ID("$Id: lib_termcap.c,v 1.43 2002/05/25 12:24:13 tom Exp $")
-/*
- some of the code in here was contributed by:
- Magnus Bengtsson, d6mbeng@dtek.chalmers.se
-*/
+#define CSI 233
+#define ESC 033 /* ^[ */
+#define L_BRACK '['
+#define SHIFT_OUT 017 /* ^N */
-char *UP;
-char *BC;
+NCURSES_EXPORT_VAR(char *) UP = 0;
+NCURSES_EXPORT_VAR(char *) BC = 0;
+
+static char *fix_me = 0;
+
+static char *
+set_attribute_9(int flag)
+{
+ const char *result;
+
+ if ((result = tparm(set_attributes, 0, 0, 0, 0, 0, 0, 0, 0, flag)) == 0)
+ result = "";
+ return strdup(result);
+}
+
+static int
+is_csi(char *s)
+{
+ if (UChar(s[0]) == CSI)
+ return 1;
+ else if (s[0] == ESC && s[1] == L_BRACK)
+ return 2;
+ return 0;
+}
+
+static char *
+skip_zero(char *s)
+{
+ if (s[0] == '0') {
+ if (s[1] == ';')
+ s += 2;
+ else if (isalpha(UChar(s[1])))
+ s += 1;
+ }
+ return s;
+}
+
+static bool
+similar_sgr(char *a, char *b)
+{
+ int csi_a = is_csi(a);
+ int csi_b = is_csi(b);
+
+ if (csi_a != 0 && csi_b != 0 && csi_a == csi_b) {
+ a += csi_a;
+ b += csi_b;
+ if (*a != *b) {
+ a = skip_zero(a);
+ b = skip_zero(b);
+ }
+ }
+ return strcmp(a, b) == 0;
+}
/***************************************************************************
*
*
***************************************************************************/
-int tgetent(char *bufp GCC_UNUSED, const char *name)
+NCURSES_EXPORT(int)
+tgetent(char *bufp GCC_UNUSED, const char *name)
{
-int errcode;
+ int errcode;
+
+ T((T_CALLED("tgetent()")));
+
+ setupterm((NCURSES_CONST char *) name, STDOUT_FILENO, &errcode);
- T((T_CALLED("tgetent()")));
+ PC = 0;
+ UP = 0;
+ BC = 0;
+ fix_me = 0;
- setupterm((NCURSES_CONST char *)name, STDOUT_FILENO, &errcode);
+ if (errcode == 1) {
- if (errcode == 1) {
+ if (cursor_left)
+ if ((backspaces_with_bs = !strcmp(cursor_left, "\b")) == 0)
+ backspace_if_not_bs = cursor_left;
- if (cursor_left)
- if ((backspaces_with_bs = !strcmp(cursor_left, "\b")) == 0)
- backspace_if_not_bs = cursor_left;
+ /* we're required to export these */
+ if (pad_char != NULL)
+ PC = pad_char[0];
+ if (cursor_up != NULL)
+ UP = cursor_up;
+ if (backspace_if_not_bs != NULL)
+ BC = backspace_if_not_bs;
- /* we're required to export these */
- if (pad_char != NULL)
- PC = pad_char[0];
- if (cursor_up != NULL)
- UP = cursor_up;
- if (backspace_if_not_bs != NULL)
- BC = backspace_if_not_bs;
+ /*
+ * While 'sgr0' is the "same" as termcap 'me', there is a compatibility
+ * issue. The sgr/sgr0 capabilities include setting/clearing alternate
+ * character set mode. A termcap application cannot use sgr, so sgr0
+ * strings that reset alternate character set mode will be
+ * misinterpreted. Here, we remove those from the more common
+ * ISO/ANSI/VT100 entries, which have sgr0 agreeing with sgr.
+ */
+ if (exit_attribute_mode != 0
+ && set_attributes != 0) {
+ char *on = set_attribute_9(1);
+ char *off = set_attribute_9(0);
+ char *tmp;
+ size_t i, j, k;
- (void) baudrate(); /* sets ospeed as a side-effect */
+ if (similar_sgr(off, exit_attribute_mode)
+ && !similar_sgr(off, on)) {
+ TR(TRACE_DATABASE, ("adjusting sgr0 : %s", _nc_visbuf(off)));
+ FreeIfNeeded(fix_me);
+ fix_me = off;
+ for (i = 0; off[i] != '\0'; ++i) {
+ if (on[i] != off[i]) {
+ j = strlen(off);
+ k = strlen(on);
+ while (j != 0
+ && k != 0
+ && off[j - 1] == on[k - 1]) {
+ --j, --k;
+ }
+ while (off[j] != '\0') {
+ off[i++] = off[j++];
+ }
+ off[i] = '\0';
+ break;
+ }
+ }
+ /* SGR 10 would reset to normal font */
+ if ((i = is_csi(off)) != 0
+ && off[strlen(off) - 1] == 'm') {
+ tmp = skip_zero(off + i);
+ if (tmp[0] == '1'
+ && skip_zero(tmp + 1) != tmp + 1) {
+ i = tmp - off;
+ if (off[i - 1] == ';')
+ i--;
+ j = skip_zero(tmp + 1) - off;
+ while (off[j] != '\0') {
+ off[i++] = off[j++];
+ }
+ off[i] = '\0';
+ }
+ }
+ TR(TRACE_DATABASE, ("...adjusted me : %s", _nc_visbuf(fix_me)));
+ if (!strcmp(fix_me, exit_attribute_mode)) {
+ TR(TRACE_DATABASE, ("...same result, discard"));
+ free(fix_me);
+ fix_me = 0;
+ }
+ }
+ free(on);
+ }
+
+ (void) baudrate(); /* sets ospeed as a side-effect */
/* LINT_PREPRO
#if 0*/
/* LINT_PREPRO
#endif*/
- }
- returnCode(errcode);
+ }
+ returnCode(errcode);
}
/***************************************************************************
*
***************************************************************************/
-int tgetflag(NCURSES_CONST char *id)
+NCURSES_EXPORT(int)
+tgetflag(NCURSES_CONST char *id)
{
-int i;
-
- T((T_CALLED("tgetflag(%s)"), id));
- if (cur_term != 0) {
- TERMTYPE *tp = &(cur_term->type);
- for_each_boolean(i, tp) {
- const char *capname = ExtBoolname(tp, i, boolcodes);
- if (!strncmp(id, capname, 2)) {
- /* setupterm forces invalid booleans to false */
- returnCode(tp->Booleans[i]);
- }
+ int i;
+
+ T((T_CALLED("tgetflag(%s)"), id));
+ if (cur_term != 0) {
+ TERMTYPE *tp = &(cur_term->type);
+ for_each_boolean(i, tp) {
+ const char *capname = ExtBoolname(tp, i, boolcodes);
+ if (!strncmp(id, capname, 2)) {
+ /* setupterm forces invalid booleans to false */
+ returnCode(tp->Booleans[i]);
}
}
- returnCode(0); /* Solaris does this */
+ }
+ returnCode(0); /* Solaris does this */
}
/***************************************************************************
*
***************************************************************************/
-int tgetnum(NCURSES_CONST char *id)
+NCURSES_EXPORT(int)
+tgetnum(NCURSES_CONST char *id)
{
-int i;
-
- T((T_CALLED("tgetnum(%s)"), id));
- if (cur_term != 0) {
- TERMTYPE *tp = &(cur_term->type);
- for_each_number(i, tp) {
- const char *capname = ExtNumname(tp, i, numcodes);
- if (!strncmp(id, capname, 2)) {
- if (!VALID_NUMERIC(tp->Numbers[i]))
- return -1;
- returnCode(tp->Numbers[i]);
- }
+ int i;
+
+ T((T_CALLED("tgetnum(%s)"), id));
+ if (cur_term != 0) {
+ TERMTYPE *tp = &(cur_term->type);
+ for_each_number(i, tp) {
+ const char *capname = ExtNumname(tp, i, numcodes);
+ if (!strncmp(id, capname, 2)) {
+ if (!VALID_NUMERIC(tp->Numbers[i]))
+ returnCode(ABSENT_NUMERIC);
+ returnCode(tp->Numbers[i]);
}
}
- returnCode(ERR);
+ }
+ returnCode(ABSENT_NUMERIC);
}
/***************************************************************************
*
***************************************************************************/
-char *tgetstr(NCURSES_CONST char *id, char **area)
+NCURSES_EXPORT(char *)
+tgetstr(NCURSES_CONST char *id, char **area)
{
-int i;
-
- T((T_CALLED("tgetstr(%s,%p)"), id, area));
- if (cur_term != 0) {
- TERMTYPE *tp = &(cur_term->type);
- for_each_string(i, tp) {
- const char *capname = ExtStrname(tp, i, strcodes);
- T(("trying %s", capname));
- if (!strncmp(id, capname, 2)) {
- T(("found match : %s", _nc_visbuf(tp->Strings[i])));
- /* setupterm forces cancelled strings to null */
+ int i;
+ char *result = NULL;
+
+ T((T_CALLED("tgetstr(%s,%p)"), id, area));
+ if (cur_term != 0) {
+ TERMTYPE *tp = &(cur_term->type);
+ for_each_string(i, tp) {
+ const char *capname = ExtStrname(tp, i, strcodes);
+ if (!strncmp(id, capname, 2)) {
+ result = tp->Strings[i];
+ TR(TRACE_DATABASE, ("found match : %s", _nc_visbuf(result)));
+ /* setupterm forces canceled strings to null */
+ if (VALID_STRING(result)) {
+ if (result == exit_attribute_mode
+ && fix_me != 0) {
+ result = fix_me;
+ TR(TRACE_DATABASE, ("altered to : %s", _nc_visbuf(result)));
+ }
if (area != 0
- && *area != 0
- && VALID_STRING(tp->Strings[i])) {
- (void) strcpy(*area, tp->Strings[i]);
+ && *area != 0) {
+ (void) strcpy(*area, result);
*area += strlen(*area) + 1;
}
- returnPtr(tp->Strings[i]);
}
+ break;
}
}
- returnPtr(NULL);
-}
-
-/*
- * char *
- * tgoto(string, x, y)
- *
- * Retained solely for upward compatibility. Note the intentional
- * reversing of the last two arguments.
- *
- */
-
-char *tgoto(const char *string, int x, int y)
-{
- T((T_CALLED("tgoto(%s,%d,%d)"), string, x, y));
- returnPtr(tparm((NCURSES_CONST char *)string, y, x));
+ }
+ returnPtr(result);
}
projects / ncurses.git / blobdiff