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Fix RemoveRelatvePathComponents

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This used to return "/foo" for "../foo" when it should return the enpty
string (i.e., error removing all relative components).
This commit is contained in:
ShadowNinja 2016-12-16 17:35:58 -05:00 committed by Craig Robbins
parent 59f84ca0a0
commit f522e7351a
2 changed files with 23 additions and 17 deletions
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17
src/filesys.cpp
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@ -631,14 +631,12 @@ std::string RemoveRelativePathComponents(std::string path)
std::string component = path.substr(component_start,
component_end - component_start);
bool remove_this_component = false;
if(component == "." && component_start != 0){
if (component == ".") {
remove_this_component = true;
}
else if(component == ".."){
} else if (component == "..") {
remove_this_component = true;
dotdot_count += 1;
}
else if(dotdot_count != 0){
} else if (dotdot_count != 0) {
remove_this_component = true;
dotdot_count -= 1;
}
@ -646,9 +644,14 @@ std::string RemoveRelativePathComponents(std::string path)
if (remove_this_component) {
while (pos != 0 && IsDirDelimiter(path[pos-1]))
pos--;
if (component_start == 0) {
// We need to remove the delemiter too
path = path.substr(component_with_delim_end, std::string::npos);
} else {
path = path.substr(0, pos) + DIR_DELIM +
path.substr(component_with_delim_end,
std::string::npos);
path.substr(component_with_delim_end, std::string::npos);
}
if (pos > 0)
pos++;
}
}

5
src/unittest/test_filepath.cpp
View File

@ -251,7 +251,10 @@ void TestFilePath::testRemoveRelativePathComponent()
UASSERT(result == p("/home/user/minetest/worlds/world1"));
path = p(".");
result = fs::RemoveRelativePathComponents(path);
UASSERT(result == ".");
UASSERT(result == "");
path = p("../a");
result = fs::RemoveRelativePathComponents(path);
UASSERT(result == "");
path = p("./subdir/../..");
result = fs::RemoveRelativePathComponents(path);
UASSERT(result == "");