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authorlouiz’ <louiz@louiz.org>2017-04-21 11:19:36 +0200
committerlouiz’ <louiz@louiz.org>2017-04-21 11:19:36 +0200
commiteac144acdaca02f018bddde5f623fba3e8cd4ad9 (patch)
tree7a64b0a690e0a007115a0005eecbac0d00d1a13d /src
parentcf87cf089251eddf2c33322e07b0cde9f70ec24b (diff)
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Configuration options can be overridden by setting env values
Diffstat (limited to 'src')
-rw-r--r--src/config/config.cpp46
1 files changed, 35 insertions, 11 deletions
diff --git a/src/config/config.cpp b/src/config/config.cpp
index 0db5751..0f3d639 100644
--- a/src/config/config.cpp
+++ b/src/config/config.cpp
@@ -1,10 +1,15 @@
#include <config/config.hpp>
+#include <utils/tolower.hpp>
#include <iostream>
#include <cstring>
#include <cstdlib>
+using namespace std::string_literals;
+
+extern char** environ;
+
std::string Config::filename{};
std::map<std::string, std::string> Config::values{};
std::vector<t_config_changed_callback> Config::callbacks{};
@@ -71,21 +76,40 @@ bool Config::read_conf(const std::string& name)
Config::clear();
+ auto parse_line = [](const std::string& line, const bool env)
+ {
+ static const auto env_option_prefix = "BIBOUMI_"s;
+
+ if (line == "" || line[0] == '#')
+ return;
+ size_t pos = line.find('=');
+ if (pos == std::string::npos)
+ return;
+ std::string option = line.substr(0, pos);
+ std::string value = line.substr(pos+1);
+ if (env)
+ {
+ auto a = option.substr(0, env_option_prefix.size());
+ if (a == env_option_prefix)
+ option = utils::tolower(option.substr(env_option_prefix.size()));
+ else
+ return;
+ }
+ Config::values[option] = value;
+ };
+
std::string line;
- size_t pos;
- std::string option;
- std::string value;
while (file.good())
{
std::getline(file, line);
- if (line == "" || line[0] == '#')
- continue ;
- pos = line.find('=');
- if (pos == std::string::npos)
- continue ;
- option = line.substr(0, pos);
- value = line.substr(pos+1);
- Config::values[option] = value;
+ parse_line(line, false);
+ }
+
+ char** env_line = environ;
+ while (*env_line)
+ {
+ parse_line(*env_line, true);
+ env_line++;
}
return true;
}