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diff --git a/ioreplay/src/generate/gparser.h b/ioreplay/src/generate/gparser.h
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+// Copyright 2018 Mimecast Ltd.
+//
+// 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.
+
+#ifndef GPARSER_H
+#define GPARSER_H
+
+#include "../datas/rbuffer.h"
+#include "../defaults.h"
+#include "generate.h"
+#include "gtask.h"
+
+/**
+ * @brief The parser definition
+ *
+ * The parser is to extract all information from the .capture file.
+ */
+typedef struct gparser_s_ {
+    bool terminate; /**< The parser thread will terminate if set to true */
+    generate_s *generate; /**< The generate object */
+    pthread_t pthread; /**< The posix thread */
+    rbuffer_s *queue; /**< A queue of task objects */
+} gparser_s;
+
+/**
+ * @brief Creates a new parser
+ *
+ * @param g The generate object
+ * @return The new parser object
+ */
+gparser_s* gparser_new(generate_s *g);
+
+/**
+ * @brief Starts the parser thread
+ *
+ * @param p The parser object
+ */
+void gparser_start(gparser_s *p);
+
+/**
+ * @brief Terminates the parser thread
+ *
+ * @param p The parser object
+ */
+void gparser_terminate(gparser_s *p);
+
+/**
+ * @brief Destroys the parser thread
+ *
+ * @param p The parser object
+ */
+void gparser_destroy(gparser_s *p);
+
+/**
+ * @brief Extracts information a .capture line
+ *
+ * Extracts information from a .capture line and stores it into the task
+ * object.
+ *
+ * @param p The parser object
+ * @param t The task object
+ */
+void gparser_extract(gparser_s *p, gtask_s *t);
+
+/**
+ * @brief Extracts information from a specific token string
+ *
+ * @param p The parser object
+ * @param t The task object
+ * @param tok The token string
+ * @return Returns with SUCCESS on success
+ */
+status_e gparser_extract_tok(gparser_s *p, gtask_s *t, char *tok);
+
+/**
+ * @brief Verifies the correctness of a token
+ *
+ * @param p The parser object
+ * @param tok The token to be verified
+ * @return true if token verified successfully
+ */
+bool gparser_token_not_ok(gparser_s *p, char *tok);
+
+/**
+ * @brief Checks whether the pidtid string is correct or not
+ *
+ * @param p The parser object
+ * @param pidtid The string to check
+ * @param pid The pointer to the resulting pid
+ * @param tid The pointer to the resulting tid
+ * @return true on success
+ */
+bool gparser_get_pidtid(gparser_s *p, char *pidtid, long *pid, long *tid);
+
+/**
+ * @brief Entry point of the parser POSIX thread
+ *
+ * @param data A pointer to the parser object
+ * return Always NULL
+ */
+void* gparser_pthread_start(void *data);
+
+#endif // GPARSER_H