From 3f38170efd67a9869cb451642fd4cd0a1f2dfb5f Mon Sep 17 00:00:00 2001
From: Julien Dessaux
Date: Thu, 1 Aug 2019 18:04:48 +0200
Subject: Added configuration file parsing

---
 common/CMakeLists.txt |  1 +
 common/config.c       | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++
 common/config.h.in    |  8 +++++++
 3 files changed, 67 insertions(+)
 create mode 100644 common/config.c

(limited to 'common')

diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index 8636758..aa5402a 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -1,3 +1,4 @@
 file(GLOB_RECURSE SOURCES *.c)
+include_directories("${CMAKE_CURRENT_BINARY_DIR}")
 
 ADD_LIBRARY(common STATIC ${SOURCES})
diff --git a/common/config.c b/common/config.c
new file mode 100644
index 0000000..3320d7c
--- /dev/null
+++ b/common/config.c
@@ -0,0 +1,58 @@
+#include <libconfig.h>
+#include <stdlib.h>
+
+#include "config.h"
+
+config_t * config = NULL;
+
+char // returns 0 if ok, greater than 0 otherwise
+config_load(const char *config_file)
+{
+    config = malloc(sizeof(config_t));
+    config_init(config);
+    config_set_tab_width(config, 4);
+    if (config_read_file(config, config_file) != CONFIG_TRUE) {
+        switch(config_error_type(config)) {
+          case CONFIG_ERR_NONE:
+            fprintf(stderr, "Configuration read error with none type reported... This shouldn't happen!\n");
+            break;
+          case CONFIG_ERR_FILE_IO:
+            fprintf(stderr, "Configuration I/O error, the most common cause is a file not found at %s\n", CONFIG_PATH);
+            break;
+          case CONFIG_ERR_PARSE:
+            fprintf(stderr, "Configuration parse error\n");
+            break;
+        }
+        fprintf(stderr, "Configuration read error occured at %s:%d %s\n", config_error_file(config), config_error_line(config), config_error_text(config));
+        return 1;
+    }
+    return 0;
+
+}
+
+const char * config_get_web_url(void)
+{
+    const char * url;
+    if (config_lookup_string(config, "web_url", &url) != CONFIG_TRUE) {
+        return DEFAULT_WEB_URL;
+    }
+    return url;
+}
+
+const char * config_get_wss_url(void)
+{
+    const char * url;
+    if (config_lookup_string(config, "wss_url", &url) != CONFIG_TRUE) {
+        return DEFAULT_WSS_URL;
+    }
+    return url;
+}
+
+void config_clean(void)
+{
+    if (config != NULL) {
+        config_destroy(config);
+        free(config);
+        config = NULL;
+    }
+}
diff --git a/common/config.h.in b/common/config.h.in
index 2f41d8d..9f27b70 100644
--- a/common/config.h.in
+++ b/common/config.h.in
@@ -6,4 +6,12 @@
 #define VERSION "@PROJECT_VERSION@"
 #define GIT_HASH "@GIT_HASH@"
 
+#define DEFAULT_WEB_URL "http://localhost:3000/"
+#define DEFAULT_WSS_URL "ws://localhost:3000/websocket"
+
+char config_load(const char *config_file);
+const char * config_get_web_url(void);
+const char * config_get_wss_url(void);
+void config_clean(void);
+
 #endif
-- 
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