X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=blobdiff_plain;f=error.c;fp=error.c;h=e6abd4bd7a83d62c1f42bf4438dd46092e2f07eb;hp=0000000000000000000000000000000000000000;hb=cdf156ba36def94a86453b017054470ee9ae7608;hpb=30b770d5375522bd014502b9348aff3ee36e830d

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+/*
+ * This file is part of the libsigrokdecode project.
+ *
+ * Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include "libsigrokdecode.h"
+
+/**
+ * @file
+ *
+ * Error handling in libsigrokdecode.
+ */
+
+/**
+ * @defgroup grp_error Error handling
+ *
+ * Error handling in libsigrokdecode.
+ *
+ * libsigrokdecode functions usually return @ref SRD_OK upon success, or a
+ * negative error code on failure.
+ *
+ * @{
+ */
+
+/**
+ * Return a human-readable error string for the given libsigrokdecode error
+ * code.
+ *
+ * @param error_code A libsigrokdecode error code number, such as
+ *                   SRD_ERR_MALLOC.
+ *
+ * @return A const string containing a short, human-readable (English)
+ *         description of the error, such as "memory allocation error".
+ *         The string must NOT be free'd by the caller!
+ *
+ * @see srd_strerror_name
+ *
+ * @since 0.2.0
+ */
+SRD_API const char *srd_strerror(int error_code)
+{
+	const char *str;
+
+	/*
+	 * Note: All defined SRD_* error macros from libsigrokdecode.h must
+	 * have an entry in this function, as well as in srd_strerror_name().
+	 */
+
+	switch (error_code) {
+	case SRD_OK:
+		str = "no error";
+		break;
+	case SRD_ERR:
+		str = "generic/unspecified error";
+		break;
+	case SRD_ERR_MALLOC:
+		str = "memory allocation error";
+		break;
+	case SRD_ERR_ARG:
+		str = "invalid argument";
+		break;
+	case SRD_ERR_BUG:
+		str = "internal error";
+		break;
+	case SRD_ERR_PYTHON:
+		str = "Python API error";
+		break;
+	case SRD_ERR_DECODERS_DIR:
+		str = "decoders directory access error";
+		break;
+	default:
+		str = "unknown error";
+		break;
+	}
+
+	return str;
+}
+
+/**
+ * Return the "name" string of the given libsigrokdecode error code.
+ *
+ * For example, the "name" of the SRD_ERR_MALLOC error code is
+ * "SRD_ERR_MALLOC", the name of the SRD_OK code is "SRD_OK", and so on.
+ *
+ * This function can be used for various purposes where the "name" string of
+ * a libsigrokdecode error code is useful.
+ *
+ * @param error_code A libsigrokdecode error code number, such as
+ *                   SRD_ERR_MALLOC.
+ *
+ * @return A const string containing the "name" of the error code as string.
+ *         The string must NOT be free'd by the caller!
+ *
+ * @see srd_strerror
+ *
+ * @since 0.2.0
+ */
+SRD_API const char *srd_strerror_name(int error_code)
+{
+	const char *str;
+
+	/*
+	 * Note: All defined SRD_* error macros from libsigrokdecode.h must
+	 * have an entry in this function, as well as in srd_strerror().
+	 */
+
+	switch (error_code) {
+	case SRD_OK:
+		str = "SRD_OK";
+		break;
+	case SRD_ERR:
+		str = "SRD_ERR";
+		break;
+	case SRD_ERR_MALLOC:
+		str = "SRD_ERR_MALLOC";
+		break;
+	case SRD_ERR_ARG:
+		str = "SRD_ERR_ARG";
+		break;
+	case SRD_ERR_BUG:
+		str = "SRD_ERR_BUG";
+		break;
+	case SRD_ERR_PYTHON:
+		str = "SRD_ERR_PYTHON";
+		break;
+	case SRD_ERR_DECODERS_DIR:
+		str = "SRD_ERR_DECODERS_DIR";
+		break;
+	default:
+		str = "unknown error code";
+		break;
+	}
+
+	return str;
+}
+
+/** @} */