From 56735c9d86cf5a98c4052605e6c711822b9af215 Mon Sep 17 00:00:00 2001
From: King_DuckZ <king_duckz@gmx.com>
Date: Fri, 13 Nov 2015 19:25:32 +0000
Subject: [PATCH] Get the config file path from cmake.

---
 CMakeLists.txt                 | 10 ++++++++++
 README.md                      |  7 +++++++
 dindexerrc.yml => dindexer.yml |  0
 src/dindexerConfig.h.in        |  1 +
 src/main.cpp                   | 17 ++++++++++++++++-
 5 files changed, 34 insertions(+), 1 deletion(-)
 rename dindexerrc.yml => dindexer.yml (100%)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3ce795c..0871a77 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,10 +2,20 @@ cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
 project(dindexer VERSION 0.1.1 LANGUAGES CXX C)
 
 list (APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules)
+option(DINDEXER_DEBUG_CFG_FILE "Enable to set the config file path to the build path" OFF)
 set(PROJECT_VERSION_BETA "1")
 set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -std=c++11")
 set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -std=c++11")
 
+if (DINDEXER_CONFIG_FILE STREQUAL "")
+	if (DINDEXER_DEBUG_CFG_FILE)
+		set(DINDEXER_CONFIG_FILE ${CMAKE_CURRENT_BINARY_DIR}/dindexer.yml CACHE STRING "Path to the config file" FORCE)
+	else()
+		set(DINDEXER_CONFIG_FILE "$HOME/.config/dindexer.yml" CACHE STRING "Path to the config file" FORCE)
+	endif()
+endif()
+message(STATUS "Config file set to ${DINDEXER_CONFIG_FILE}")
+
 find_package(Boost 1.53.0 REQUIRED COMPONENTS program_options)
 find_package(PostgreSQL REQUIRED)
 find_package(YamlCpp 0.5.1 REQUIRED)
diff --git a/README.md b/README.md
index 3f3b69f..0787354 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,13 @@ The program will go through every file in the path you specify. Hashing everythi
 You can run dindexer --help to see a list of available switches.
 
 #   Build instructions   #
+##  Dependencies  ##
+The following libraries must be available on your system:
+
+- PostgreSQL (libpq)
+- Boost 1.53 or later
+- yaml-cpp 0.5.1 or later
+
 ##  Linux  ##
 
     mkdir dindexer_build
diff --git a/dindexerrc.yml b/dindexer.yml
similarity index 100%
rename from dindexerrc.yml
rename to dindexer.yml
diff --git a/src/dindexerConfig.h.in b/src/dindexerConfig.h.in
index 2270bce..72da2f6 100644
--- a/src/dindexerConfig.h.in
+++ b/src/dindexerConfig.h.in
@@ -23,5 +23,6 @@
 #define VERSION_MINOR @PROJECT_VERSION_MINOR@
 #define VERSION_BETA @PROJECT_VERSION_BETA@
 #define VERSION_PATCH @PROJECT_VERSION_PATCH@
+#define CONFIG_FILE_PATH "@DINDEXER_CONFIG_FILE@"
 
 #endif
diff --git a/src/main.cpp b/src/main.cpp
index 9e6d625..5d7174f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -26,6 +26,8 @@
 #	include <mutex>
 #	include <condition_variable>
 #endif
+#include <wordexp.h>
+#include "dindexerConfig.h"
 #include "filesearcher.hpp"
 #include "indexer.hpp"
 #include "settings.hpp"
@@ -33,6 +35,7 @@
 
 namespace {
 	void run_hash_calculation ( din::Indexer& parIndexer, bool parShowProgress );
+	std::string expand ( const char* parString );
 } //unnamed namespace
 
 int main (int parArgc, char* parArgv[]) {
@@ -61,7 +64,7 @@ int main (int parArgc, char* parArgv[]) {
 
 	din::DinDBSettings settings;
 	{
-		const bool loaded = din::load_settings("dindexerrc.yml", settings);
+		const bool loaded = din::load_settings(expand(CONFIG_FILE_PATH), settings);
 		if (not loaded) {
 			std::cerr << "Can't load settings from dindexerrc.yml, quitting\n";
 			return 1;
@@ -141,4 +144,16 @@ namespace {
 		}
 #endif
 	}
+
+	std::string expand (const char* parString) {
+		wordexp_t p;
+		wordexp(parString, &p, 0);
+		char** w = p.we_wordv;
+		std::ostringstream oss;
+		for (std::size_t z = 0; z < p.we_wordc; ++z) {
+			oss << w[z];
+		}
+		wordfree(&p);
+		return oss.str();
+	}
 } //unnamed namespace