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Improves both internal and external exposition for the SDL version.

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This commit is contained in:
Thomas Harte 2017-11-20 21:59:53 -05:00
parent 7b25b03cd5
commit c368c4443e
1 changed files with 9 additions and 1 deletions
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10
OSBindings/SDL/main.cpp
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@ -157,18 +157,25 @@ ParsedArguments parse_arguments(int argc, char *argv[]) {
} }
std::string final_path_component(const std::string &path) { std::string final_path_component(const std::string &path) {
// An empty path has no final component.
if(path.empty()) { if(path.empty()) {
return ""; return "";
} }
// Find the last slash...
auto final_slash = path.find_last_of("/\\"); auto final_slash = path.find_last_of("/\\");
// If no slash was found at all, return the whole path.
if(final_slash == std::string::npos) { if(final_slash == std::string::npos) {
return path; return path;
} }
// If a slash was found in the final position, remove it and recurse.
if(final_slash == path.size() - 1) { if(final_slash == path.size() - 1) {
return final_path_component(path.substr(0, path.size() - 1)); return final_path_component(path.substr(0, path.size() - 1));
} }
// Otherwise return everything from just after the slash to the end of the path.
return path.substr(final_slash+1, path.size() - final_slash - 1); return path.substr(final_slash+1, path.size() - final_slash - 1);
} }
@ -211,7 +218,8 @@ int main(int argc, char *argv[]) {
// Perform a sanity check on arguments. // Perform a sanity check on arguments.
if(arguments.file_name.empty()) { if(arguments.file_name.empty()) {
std::cerr << "Usage: " << final_path_component(argv[0]) << " [file]" << std::endl; std::cerr << "Usage: " << final_path_component(argv[0]) << " [file] [OPTIONS]" << std::endl;
std::cerr << "Use --help to learn more about available options." << std::endl;
return -1; return -1;
} }