Only validate plugin headers

Validating the whole plugin can be orders of magnitude slower,
libloadorder only uses the headers, and if the header is valid it's
probably good enough. This requires libespm v2.4.

.travis.yml

@@ -22,8 +22,8 @@ install:
   # Currently inside the cloned repo path.
   - cd ..
   # Install libespm.
-  - wget https://github.com/WrinklyNinja/libespm/archive/2.2.0.tar.gz -O - | tar -xz
-  - mv libespm-2.2.0 libespm
+  - wget https://github.com/WrinklyNinja/libespm/archive/2.4.0.tar.gz -O - | tar -xz
+  - mv libespm-2.4.0 libespm
   # Install Google Test
   - wget https://github.com/google/googletest/archive/release-1.7.0.tar.gz -O - | tar -xz
   - cd googletest-release-1.7.0

README.md

@@ -21,7 +21,7 @@ Instructions for other platforms are not provided, but the process for building
 
 * [Boost](http://www.boost.org) Filesystem and Locale libraries: tested with v1.55.0 and v1.59.0.
 * [Google Test](https://github.com/google/googletest): Required to build libloadorder's tests, but not the library itself. Tested with v1.7.0.
-* [Libespm](http://github.com/WrinklyNinja/libespm) v2.2.0
+* [Libespm](http://github.com/WrinklyNinja/libespm) v2.4.0
 
 ### Windows
 

src/backend/Plugin.cpp

@@ -126,8 +126,8 @@ namespace liblo {
     bool Plugin::isValid(const std::string& filename, const GameSettings& gameSettings) {
         string name = trimGhostExtension(filename);
 
-        return libespm::Plugin::isValid(gameSettings.getPluginsFolder() / name, gameSettings.getLibespmId())
-            || libespm::Plugin::isValid(gameSettings.getPluginsFolder() / (name + ".ghost"), gameSettings.getLibespmId());
+        return libespm::Plugin::isValid(gameSettings.getPluginsFolder() / name, gameSettings.getLibespmId(), true)
+            || libespm::Plugin::isValid(gameSettings.getPluginsFolder() / (name + ".ghost"), gameSettings.getLibespmId(), true);
     }
 
     std::string Plugin::trimGhostExtension(const std::string& filename) {