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libcamera: utils: Add a C++ dirname implementation

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Provide a std::string based implementation which conforms to the
behaviour of the dirname() fucntion defined by POSIX.

Tests are added to cover expected corner cases of the implementation.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Kieran Bingham 2019-10-22 16:01:02 +01:00
parent a8be6e94e7
commit a15e8d92ea
3 changed files with 103 additions and 0 deletions
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54
test/utils.cpp
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@ -19,6 +19,56 @@ using namespace libcamera;
class UtilsTest : public Test
{
protected:
int testDirname()
{
static const std::vector<std::string> paths = {
"",
"///",
"/bin",
"/usr/bin",
"//etc////",
"//tmp//d//",
"current_file",
"./current_file",
"./current_dir/",
"current_dir/",
};
static const std::vector<std::string> expected = {
".",
"/",
"/",
"/usr",
"/",
"//tmp",
".",
".",
".",
".",
};
std::vector<std::string> results;
for (const auto &path : paths)
results.push_back(utils::dirname(path));
if (results != expected) {
cerr << "utils::dirname() tests failed" << endl;
cerr << "expected: " << endl;
for (const auto &path : expected)
cerr << "\t" << path << endl;
cerr << "results: " << endl;
for (const auto &path : results)
cerr << "\t" << path << endl;
return TestFail;
}
return TestPass;
}
int run()
{
/* utils::hex() test. */
@ -71,6 +121,10 @@ protected:
return TestFail;
}
/* utils::dirname() tests. */
if (TestPass != testDirname())
return TestFail;
return TestPass;
}
};