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-rw-r--r--apps/plugins/frotz/err.c154
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diff --git a/apps/plugins/frotz/err.c b/apps/plugins/frotz/err.c
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+/* err.c - Runtime error reporting functions
+ * Written by Jim Dunleavy <jim.dunleavy@erha.ie>
+ *
+ * This file is part of Frotz.
+ *
+ * Frotz is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Frotz is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include "frotz.h"
+
+/* Define stuff for stricter Z-code error checking, for the generic
+ Unix/DOS/etc terminal-window interface. Feel free to change the way
+ player prefs are specified, or replace report_zstrict_error()
+ completely if you want to change the way errors are reported. */
+
+/* int err_report_mode = ERR_DEFAULT_REPORT_MODE; */
+
+static int error_count[ERR_NUM_ERRORS];
+
+static char *err_messages[] = {
+ "Text buffer overflow",
+ "Store out of dynamic memory",
+ "Division by zero",
+ "Illegal object",
+ "Illegal attribute",
+ "No such property",
+ "Stack overflow",
+ "Call to illegal address",
+ "Call to non-routine",
+ "Stack underflow",
+ "Illegal opcode",
+ "Bad stack frame",
+ "Jump to illegal address",
+ "Can't save while in interrupt",
+ "Nesting stream #3 too deep",
+ "Illegal window",
+ "Illegal window property",
+ "Print at illegal address",
+ "@jin called with object 0",
+ "@get_child called with object 0",
+ "@get_parent called with object 0",
+ "@get_sibling called with object 0",
+ "@get_prop_addr called with object 0",
+ "@get_prop called with object 0",
+ "@put_prop called with object 0",
+ "@clear_attr called with object 0",
+ "@set_attr called with object 0",
+ "@test_attr called with object 0",
+ "@move_object called moving object 0",
+ "@move_object called moving into object 0",
+ "@remove_object called with object 0",
+ "@get_next_prop called with object 0"
+};
+
+static void print_long (unsigned long value, int base);
+
+/*
+ * init_err
+ *
+ * Initialise error reporting.
+ *
+ */
+
+void init_err (void)
+{
+ int i;
+
+ /* Initialize the counters. */
+
+ for (i = 0; i < ERR_NUM_ERRORS; i++)
+ error_count[i] = 0;
+}
+
+/*
+ * runtime_error
+ *
+ * An error has occurred. Ignore it, pass it to os_fatal or report
+ * it according to err_report_mode.
+ *
+ * errnum : Numeric code for error (1 to ERR_NUM_ERRORS)
+ *
+ */
+
+void runtime_error (int errnum)
+{
+ int wasfirst;
+
+ if (errnum <= 0 || errnum > ERR_NUM_ERRORS)
+ return;
+
+ if (f_setup.err_report_mode == ERR_REPORT_FATAL
+ || (!f_setup.ignore_errors && errnum <= ERR_MAX_FATAL)) {
+ flush_buffer ();
+ os_fatal (err_messages[errnum - 1]);
+ return;
+ }
+
+ wasfirst = (error_count[errnum - 1] == 0);
+ error_count[errnum - 1]++;
+
+ if ((f_setup.err_report_mode == ERR_REPORT_ALWAYS)
+ || (f_setup.err_report_mode == ERR_REPORT_ONCE && wasfirst)) {
+ long pc;
+
+ GET_PC (pc);
+ print_string ("Warning: ");
+ print_string (err_messages[errnum - 1]);
+ print_string (" (PC = ");
+ print_long (pc, 16);
+ print_char (')');
+
+ if (f_setup.err_report_mode == ERR_REPORT_ONCE) {
+ print_string (" (will ignore further occurrences)");
+ } else {
+ print_string (" (occurence ");
+ print_long (error_count[errnum - 1], 10);
+ print_char (')');
+ }
+ new_line ();
+ }
+
+} /* report_error */
+
+/*
+ * print_long
+ *
+ * Print an unsigned 32bit number in decimal or hex.
+ *
+ */
+
+static void print_long (unsigned long value, int base)
+{
+ unsigned long i;
+ char c;
+
+ for (i = (base == 10 ? 1000000000 : 0x10000000); i != 0; i /= base)
+ if (value >= i || i == 1) {
+ c = (value / i) % base;
+ print_char (c + (c <= 9 ? '0' : 'a' - 10));
+ }
+
+}/* print_long */