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https://github.com/espressif/openthread.git
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[string] new functions for case-insensitive comparison (#7189)
This commit adds new string helper functions to convert between lowercase and uppercase letters. It also adds new function `StringStartsWith()` which determines whether the string starts with a given prefix string and `StringMatch()` which compares and matches two strings. This commit also adds a new mechanism in all string helper functions allowing the caller to specify the match mode to be used when comparing strings: Either an exact match of characters, or a case-insensitive match where uppercase and lowercase characters are treated as equal. This commit also updates `test_string` unit test to validate the new functions and behaviors.
This commit is contained in:
Abtin Keshavarzian
committed by
Jonathan Hui
Jonathan Hui
parent
d82a678322
commit
07031e1651
+121
-15
@@ -49,7 +49,7 @@ template <uint16_t kSize> void PrintString(const char *aName, const String<kSize
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void TestStringWriter(void)
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{
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String<kStringSize> str;
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constexpr char kLongString[] = "abcdefghijklmnopqratuvwxyzabcdefghijklmnopqratuvwxyz";
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const char kLongString[] = "abcdefghijklmnopqratuvwxyzabcdefghijklmnopqratuvwxyz";
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printf("\nTest 1: StringWriter constructor\n");
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@@ -147,12 +147,12 @@ void TestUtf8(void)
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void TestStringFind(void)
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{
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char emptyString[1] = {'\0'};
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char testString[] = "foo.bar.bar\\.";
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char testString[] = "Foo.bar.bar\\.";
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char testString2[] = "abcabcabcdabc";
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printf("\nTest 6: StringFind() function\n");
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VerifyOrQuit(StringFind(testString, 'f') == testString);
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VerifyOrQuit(StringFind(testString, 'F') == testString);
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VerifyOrQuit(StringFind(testString, 'o') == &testString[1]);
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VerifyOrQuit(StringFind(testString, '.') == &testString[3]);
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VerifyOrQuit(StringFind(testString, 'r') == &testString[6]);
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@@ -160,17 +160,19 @@ void TestStringFind(void)
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VerifyOrQuit(StringFind(testString, 'x') == nullptr);
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VerifyOrQuit(StringFind(testString, ',') == nullptr);
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VerifyOrQuit(StringFind(emptyString, 'f') == nullptr);
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VerifyOrQuit(StringFind(emptyString, 'F') == nullptr);
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VerifyOrQuit(StringFind(emptyString, '.') == nullptr);
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VerifyOrQuit(StringFind(testString, "foo") == &testString[0]);
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VerifyOrQuit(StringFind(testString, "Foo") == &testString[0]);
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VerifyOrQuit(StringFind(testString, "oo") == &testString[1]);
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VerifyOrQuit(StringFind(testString, "bar") == &testString[4]);
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VerifyOrQuit(StringFind(testString, "bar\\") == &testString[8]);
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VerifyOrQuit(StringFind(testString, "\\.") == &testString[11]);
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VerifyOrQuit(StringFind(testString, testString) == testString);
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VerifyOrQuit(StringFind(testString, "fooo") == nullptr);
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VerifyOrQuit(StringFind(testString, "far") == nullptr);
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VerifyOrQuit(StringFind(testString, "Fooo") == nullptr);
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VerifyOrQuit(StringFind(testString, "Far") == nullptr);
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VerifyOrQuit(StringFind(testString, "FOO") == nullptr);
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VerifyOrQuit(StringFind(testString, "BAR") == nullptr);
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VerifyOrQuit(StringFind(testString, "bar\\..") == nullptr);
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VerifyOrQuit(StringFind(testString, "") == &testString[0]);
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@@ -182,27 +184,128 @@ void TestStringFind(void)
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VerifyOrQuit(StringFind(testString2, "abcabc") == &testString2[0]);
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VerifyOrQuit(StringFind(testString2, "abcabcd") == &testString2[3]);
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VerifyOrQuit(StringFind(testString, "FOO", kStringCaseInsensitiveMatch) == &testString[0]);
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VerifyOrQuit(StringFind(testString, "OO", kStringCaseInsensitiveMatch) == &testString[1]);
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VerifyOrQuit(StringFind(testString, "BAR", kStringCaseInsensitiveMatch) == &testString[4]);
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VerifyOrQuit(StringFind(testString, "BAR\\", kStringCaseInsensitiveMatch) == &testString[8]);
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VerifyOrQuit(StringFind(testString, "\\.", kStringCaseInsensitiveMatch) == &testString[11]);
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VerifyOrQuit(StringFind(testString, testString) == testString);
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VerifyOrQuit(StringFind(testString, "FOOO", kStringCaseInsensitiveMatch) == nullptr);
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VerifyOrQuit(StringFind(testString, "FAR", kStringCaseInsensitiveMatch) == nullptr);
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VerifyOrQuit(StringFind(testString, "BAR\\..", kStringCaseInsensitiveMatch) == nullptr);
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VerifyOrQuit(StringFind(testString, "", kStringCaseInsensitiveMatch) == &testString[0]);
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VerifyOrQuit(StringFind(emptyString, "FOO", kStringCaseInsensitiveMatch) == nullptr);
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VerifyOrQuit(StringFind(emptyString, "BAR", kStringCaseInsensitiveMatch) == nullptr);
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VerifyOrQuit(StringFind(emptyString, "", kStringCaseInsensitiveMatch) == &emptyString[0]);
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// Verify when sub-string has repeated patterns
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VerifyOrQuit(StringFind(testString2, "ABCABC", kStringCaseInsensitiveMatch) == &testString2[0]);
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VerifyOrQuit(StringFind(testString2, "ABCABCD", kStringCaseInsensitiveMatch) == &testString2[3]);
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printf(" -- PASS\n");
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}
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void TestStringStartsWith(void)
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{
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printf("\nTest 7: StringStartsWith() function\n");
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VerifyOrQuit(StringStartsWith("FooBar", "Foo"));
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VerifyOrQuit(!StringStartsWith("FooBar", "Ba"));
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VerifyOrQuit(StringStartsWith("FooBar", "FooBar"));
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VerifyOrQuit(!StringStartsWith("FooBar", "FooBarr"));
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VerifyOrQuit(!StringStartsWith("FooBar", "foo"));
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VerifyOrQuit(!StringStartsWith("FooBar", "FoO"));
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VerifyOrQuit(!StringStartsWith("", "foo"));
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VerifyOrQuit(StringStartsWith("FooBar", "FOO", kStringCaseInsensitiveMatch));
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VerifyOrQuit(!StringStartsWith("FooBar", "BA", kStringCaseInsensitiveMatch));
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VerifyOrQuit(StringStartsWith("FooBar", "FOOBAR", kStringCaseInsensitiveMatch));
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VerifyOrQuit(!StringStartsWith("FooBar", "FooBarr", kStringCaseInsensitiveMatch));
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VerifyOrQuit(StringStartsWith("FooBar", "foO", kStringCaseInsensitiveMatch));
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VerifyOrQuit(!StringStartsWith("", "foo", kStringCaseInsensitiveMatch));
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printf(" -- PASS\n");
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}
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void TestStringEndsWith(void)
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{
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printf("\nTest 7: StringEndsWith() function\n");
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printf("\nTest 8: StringEndsWith() function\n");
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VerifyOrQuit(StringEndsWith("foobar", 'r'));
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VerifyOrQuit(!StringEndsWith("foobar", 'a'));
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VerifyOrQuit(!StringEndsWith("foobar", '\0'));
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VerifyOrQuit(StringEndsWith("FooBar", 'r'));
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VerifyOrQuit(!StringEndsWith("FooBar", 'a'));
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VerifyOrQuit(!StringEndsWith("FooBar", '\0'));
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VerifyOrQuit(StringEndsWith("a", 'a'));
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VerifyOrQuit(!StringEndsWith("a", 'b'));
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VerifyOrQuit(StringEndsWith("foobar", "bar"));
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VerifyOrQuit(!StringEndsWith("foobar", "ba"));
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VerifyOrQuit(StringEndsWith("foobar", "foobar"));
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VerifyOrQuit(!StringEndsWith("foobar", "foobarr"));
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VerifyOrQuit(StringEndsWith("FooBar", "Bar"));
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VerifyOrQuit(!StringEndsWith("FooBar", "Ba"));
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VerifyOrQuit(StringEndsWith("FooBar", "FooBar"));
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VerifyOrQuit(!StringEndsWith("FooBar", "FooBarr"));
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VerifyOrQuit(!StringEndsWith("", 'a'));
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VerifyOrQuit(!StringEndsWith("", "foo"));
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VerifyOrQuit(StringEndsWith("FooBar", "baR", kStringCaseInsensitiveMatch));
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VerifyOrQuit(!StringEndsWith("FooBar", "bA", kStringCaseInsensitiveMatch));
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VerifyOrQuit(StringEndsWith("FooBar", "fOOBar", kStringCaseInsensitiveMatch));
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VerifyOrQuit(!StringEndsWith("FooBar", "Foobarr", kStringCaseInsensitiveMatch));
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VerifyOrQuit(!StringEndsWith("", "Foo", kStringCaseInsensitiveMatch));
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printf(" -- PASS\n");
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}
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void TestStringMatch(void)
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{
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printf("\nTest 9: StringMatch() function\n");
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VerifyOrQuit(StringMatch("", ""));
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VerifyOrQuit(StringMatch("FooBar", "FooBar"));
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VerifyOrQuit(!StringMatch("FooBar", "FooBa"));
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VerifyOrQuit(!StringMatch("FooBa", "FooBar"));
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VerifyOrQuit(!StringMatch("FooBa", "FooBar"));
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VerifyOrQuit(!StringMatch("FooBar", "fooBar"));
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VerifyOrQuit(!StringMatch("FooBaR", "FooBar"));
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VerifyOrQuit(StringMatch("", "", kStringCaseInsensitiveMatch));
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VerifyOrQuit(StringMatch("FooBar", "fOObAR", kStringCaseInsensitiveMatch));
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VerifyOrQuit(!StringMatch("FooBar", "fOObA", kStringCaseInsensitiveMatch));
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VerifyOrQuit(!StringMatch("FooBa", "FooBar", kStringCaseInsensitiveMatch));
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VerifyOrQuit(!StringMatch("FooBa", "FooBar", kStringCaseInsensitiveMatch));
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VerifyOrQuit(!StringMatch("Fooba", "fooBar", kStringCaseInsensitiveMatch));
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VerifyOrQuit(StringMatch("FooBar", "FOOBAR", kStringCaseInsensitiveMatch));
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VerifyOrQuit(StringMatch("FoobaR", "FooBar", kStringCaseInsensitiveMatch));
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VerifyOrQuit(StringMatch("FOOBAR", "foobar", kStringCaseInsensitiveMatch));
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printf(" -- PASS\n");
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}
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void TestStringToLowercase(void)
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{
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const uint16_t kMaxSize = 100;
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const char kTestString[] = "!@#$%^&*()_+=[].,<>//;:\"'`~ \t\r\n";
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const char kUppercaseString[] = "ABCDEFGHIJKLMNOPQRATUVWXYZABCDEFGHIJKLMNOPQRATUVWXYZ";
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const char kLowercaseString[] = "abcdefghijklmnopqratuvwxyzabcdefghijklmnopqratuvwxyz";
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char string[kMaxSize];
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printf("\nTest 10: StringConvertToLowercase() function\n");
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memcpy(string, kTestString, sizeof(kTestString));
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StringConvertToLowercase(string);
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VerifyOrQuit(memcmp(string, kTestString, sizeof(kTestString)) == 0);
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StringConvertToUppercase(string);
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VerifyOrQuit(memcmp(string, kTestString, sizeof(kTestString)) == 0);
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memcpy(string, kUppercaseString, sizeof(kUppercaseString));
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StringConvertToLowercase(string);
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VerifyOrQuit(memcmp(string, kLowercaseString, sizeof(kLowercaseString)) == 0);
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StringConvertToUppercase(string);
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VerifyOrQuit(memcmp(string, kUppercaseString, sizeof(kUppercaseString)) == 0);
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printf(" -- PASS\n");
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}
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@@ -214,7 +317,10 @@ int main(void)
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ot::TestStringLength();
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ot::TestUtf8();
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ot::TestStringFind();
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ot::TestStringStartsWith();
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ot::TestStringEndsWith();
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ot::TestStringMatch();
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ot::TestStringToLowercase();
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printf("\nAll tests passed.\n");
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return 0;
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}
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