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engines/glk/tads/tads2/error_handling.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "glk/tads/tads2/error_handling.h"
+
+namespace Glk {
+namespace TADS {
+namespace TADS2 {
+
+
+/* format an error message, sprintf-style, using an erradef array */
+int errfmt(char *outbuf, int outbufl, char *fmt, int argc, erradef *argv)
+{
+	int    outlen = 0;
+	int    argi   = 0;
+	int    len;
+	char   buf[20];
+	const char  *p = nullptr;
+	char   fmtchar;
+
+	while (*fmt != '\0' && outbufl > 1)
+	{
+		switch(*fmt)
+		{
+		case '\\':
+			++fmt;
+			len = 1;
+			switch(*fmt)
+			{
+			case '\0':
+				--fmt;
+				break;
+			case '\n':
+				p = "\n";
+				break;
+			case '\t':
+				p = "\t";
+				break;
+			default:
+				p = fmt;
+				break;
+			}
+			break;
+
+		case '%':
+			++fmt;
+			fmtchar = *fmt;
+			if (argi >= argc) fmtchar = 1;          /* too many - ignore it */
+			switch(fmtchar)
+			{
+			case '\0':
+				--fmt;
+				len = 0;
+				break;
+
+			case '%':
+				p = "%";
+				len = 1;
+				break;
+
+			case 'd':
+				Common::sprintf_s(buf, "%d", argv[argi].erraint);
+				len = strlen(buf);
+				p = buf;
+				break;
+
+			case 'u':
+				Common::sprintf_s(buf, "%u", argv[argi].erraint);
+				len = strlen(buf);
+				p = buf;
+				break;
+
+			case 's':
+				p = argv[argi].errastr;
+				len = strlen(p);
+				break;
+
+			default:
+				p = "";
+				len = 0;
+				--argi;
+				break;
+			}
+			++argi;
+			break;
+
+		default:
+			p = fmt;
+			len = 1;
+			break;
+		}
+
+		/* copy output that was set up above */
+		if (len != 0)
+		{
+			if (outbufl >= len)
+			{
+				memcpy(outbuf, p, (size_t)len);
+				outbufl -= len;
+				outbuf += len;
+			}
+			else if (outbufl > 1)
+			{
+				memcpy(outbuf, p, (size_t)outbufl - 1);
+				outbufl = 1;
+			}
+			outlen += len;
+		}
+		++fmt;
+	}
+
+	/* add a null terminator */
+	if (outbufl != 0)
+		*outbuf++ = '\0';
+
+	/* return the length */
+	return outlen;
+}
+
+#if defined(DEBUG) && !defined(ERR_NO_MACRO)
+#error longjmp unsupported in ScummVM
+#endif /* DEBUG */
+
+
+
+#ifdef ERR_NO_MACRO
+
+/* base error signal function */
+void errsign(errcxdef *ctx, int e, const char *facility)
+{
+	strncpy(ctx->errcxptr->errfac, facility, ERRFACMAX);
+	ctx->errcxptr->errfac[ERRFACMAX] = '\0';
+	ctx->errcxofs = 0;
+#if 0
+	longjmp(ctx->errcxptr->errbuf, e);
+#else
+	error("Error - %s", facility);
+#endif
+}
+
+/* signal an error with no arguments */
+void errsigf(errcxdef *ctx, const char *facility, int e)
+{
+	errargc(ctx, 0);
+	errsign(ctx, e, facility);
+}
+
+/* enter a string argument */
+char *errstr(errcxdef *ctx, const char *str, int len)
+{
+	char *ret = &ctx->errcxbuf[ctx->errcxofs];
+
+	memcpy(ret, str, (size_t)len);
+	ret[len] = '\0';
+	ctx->errcxofs += len + 1;
+	return(ret);
+}
+
+/* resignal current error */
+void errrse1(errcxdef *ctx, errdef *fr)
+{
+	errargc(ctx, fr->erraac);
+	memcpy(ctx->errcxptr->erraav, fr->erraav,
+		   (size_t)(fr->erraac * sizeof(erradef)));
+	errsign(ctx, fr->errcode, fr->errfac);
+}
+
+/* log an error: base function */
+void errlogn(errcxdef *ctx, int err, const char *facility)
+{
+	ctx->errcxofs = 0;
+	(*ctx->errcxlog)(ctx->errcxlgc, facility, err, ctx->errcxptr->erraac,
+					 ctx->errcxptr->erraav);
+}
+
+/* log an error with no arguments */
+void errlogf(errcxdef *ctx, const char *facility, int err)
+{
+	errargc(ctx, 0);
+	errlogn(ctx, err, facility);
+}
+
+#endif /* ERR_NO_MACRO */
+
+} // End of namespace TADS2
+} // End of namespace TADS
+} // End of namespace Glk