ELAPI Adding file provider and CSV format

This patch creates the infrastructure for
logging of the event from the top of the interface
to the bottom. It is a start. A lot of functionality
is left aside.
The attempt of this patch is pass event from caller
of the ELAPI interface via targets to sinks
then to providers and do serialization creating
entity that is ready to be written to a file.
It also implements more specific provider related
configuration parameters.
Also it addresses couple suggestions that were
brought up against previous patch.

ELAPI Correcting issues

This patch addresses the issues found during the
review of the previous patches and addresses
ticket #166.

1 files changed, 82 insertions, 0 deletions

diff --git a/common/elapi/providers/file/file_fmt_csv.h b/common/elapi/providers/file/file_fmt_csv.h
new file mode 100644
index 00000000..6cc52745
--- /dev/null
+++ b/common/elapi/providers/file/file_fmt_csv.h
@@ -0,0 +1,82 @@
+/*
+    ELAPI
+
+    Module contains functions related to outputting events in CSV format.
+
+    Copyright (C) Dmitri Pal <dpal@redhat.com> 2009
+
+    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/>.
+*/
+
+#ifndef ELAPI_FILE_FMT_CSV_H
+#define ELAPI_FILE_FMT_CSV_H
+
+#include <stdint.h>
+#include "collection.h"
+#include "elapi_basic.h"
+
+/* Format specific configuration parameters */
+/* CSV:                                     */
+#define FILE_CSV_QUAL       "csvqual"
+#define FILE_CSV_SEP        "csvsep"
+#define FILE_CSV_ESCSYM     "csvescsym"
+#define FILE_CSV_SPACE      "csvspace"
+#define FILE_CSV_NUMSP      "csvnumsp"
+#define FILE_CSV_HEADER     "csvheader"
+
+/* Strings from config that will be recognized */
+#define FILE_CSV_SP         "space"
+#define FILE_CSV_TAB        "tab"
+#define FILE_CSV_CR         "cr"
+
+
+/* Default values for configuration parameters */
+#define FILE_CSV_DEF_QUAL   '"'
+#define FILE_CSV_DEF_SEP    ','
+#define FILE_CSV_DEF_ESC    '\\'
+#define FILE_CSV_DEF_SPC    ' '
+
+/* Try catch corrupted configuration 80 is more than enough */
+#define FILE_MAXSPACE   80
+
+/* Configuration for the CSV output */
+struct file_csv_cfg {
+    uint32_t csvheader;             /* Include csv header or not? */
+    uint32_t csvnumsp;              /* How many spaces ? */
+    unsigned char csvqualifier;     /* What is the qualifier? */
+    unsigned char csvseparator;     /* What is the separator? */
+    unsigned char csvescchar;       /* What is the escape character? */
+    unsigned char csvspace;         /* What is the space character? */
+};
+
+/* Function that reads the specific configuration
+ * information about the CSV format of the output
+ */
+int file_get_csv_cfg(void **storage,
+                     const char *name,
+                     struct collection_item *ini_config,
+                     const char *appname);
+
+/* Serialize an item into the csv format */
+int file_serialize_csv(struct elapi_data_out *out_data,
+                       int type,
+                       int length,
+                       void *data,
+                       void *mode_cfg);
+
+
+#ifdef ELAPI_VERBOSE
+/* Function for debugging */
+void file_print_fmt_csv(void *data);
+
+#endif
+#endif