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+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file longBow_Debug.h
+ * @ingroup internals
+ * @brief Support for LongBow and Application Debugging.
+ *
+ */
+#ifndef LongBow_longBow_Debug_h
+#define LongBow_longBow_Debug_h
+
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include <LongBow/longBow_Location.h>
+
+typedef struct longbow_debug_criteria LongBowDebugCriteria;
+
+/**
+ * Pretty print memory on standard output.
+ *
+ * @param [in] memory A pointer to memory.
+ * @param [in] length The number of bytes to display.
+ */
+void longBowDebug_MemoryDump(const char *memory, size_t length);
+
+/**
+ * Generate and send a message to the specified location.
+ *
+ * @param [in] criteria Debug criteria.
+ * @param [in] location The location to which the message is sent.
+ * @param [in] format The format string for the message.
+ * @param [in] ... Remaining arguments for the message string.
+ */
+void longBowDebug_Message(LongBowDebugCriteria *criteria, const LongBowLocation *location, const char *format, ...);
+
+/**
+ * Write data in an array to a file.
+ *
+ * Data is written to the specified file from the supplied array.
+ *
+ * @param [in] fileName The name of the to write to.
+ * @param [in] data A pointer to an array of bytes to write.
+ * @param [in] length The number of bytes to write.
+ *
+ * @return The number of bytes written.
+ *
+ * Example:
+ * @code
+ * {
+ * size_t numBytesWritten = longBowDebug_WriteFile("log.out", "error", 6);
+ * }
+ * @endcode
+ *
+ * @see longBowDebug_ReadFile
+ */
+ssize_t longBowDebug_WriteFile(const char *fileName, const char *data, size_t length);
+
+/**
+ * Read data from a file into an allocated array.
+ *
+ * Data is read from the specified file into an allocated byte array which must be deallocated by the caller via {stdlib free()}.
+ *
+ * For convenience the allocate buffer exceeds the size of the file by one byte, which is set to zero.
+ * This permits using the result directly as a nul-terminated C string.
+ *
+ * @param [in] fileName The name of the file to read from.
+ * @param [in] data A pointer to a character pointer that will be updated with the address of the read data.
+ *
+ * @return The number of bytes read, or -1 if there was an error.
+ *
+ * Example:
+ * @code
+ * {
+ * char *buffer = NULL;
+ * size_t numBytesRead = longBowDebug_ReadFile("log.out", &buffer);
+ * // use buffer as needed
+ * }
+ * @endcode
+ *
+ * @see longBowDebug_WriteFile
+ */
+ssize_t longBowDebug_ReadFile(const char *fileName, char **data);
+#endif