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Commit 8b452b87 authored by TreeHugger Robot's avatar TreeHugger Robot Committed by Android (Google) Code Review
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Merge "Add String16#contains and strstr16 methods." into nyc-dev

parents c337cae9 5bacef33

include/utils/String16.h

+3 −1
Original line number Diff line number Diff line
@@ -91,6 +91,8 @@ public: 
            bool                startsWith(const String16& prefix) const;

            bool                startsWith(const char16_t* prefix) const;



            bool                contains(const char16_t* chrs) const;



            status_t            makeLower();



            status_t            replaceAll(char16_t replaceThis,

include/utils/Unicode.h

+1 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ size_t strlen16(const char16_t *); 
size_t strnlen16(const char16_t *, size_t);

char16_t *strcpy16(char16_t *, const char16_t *);

char16_t *strncpy16(char16_t *, const char16_t *, size_t);

char16_t *strstr16(const char16_t*, const char16_t*);



// Version of comparison that supports embedded nulls.

// This is different than strncmp() because we don't stop

libutils/String16.cpp

+5 −0
Original line number Diff line number Diff line
@@ -345,6 +345,11 @@ bool String16::startsWith(const char16_t* prefix) const 
    return strncmp16(mString, prefix, ps) == 0;

}



bool String16::contains(const char16_t* chrs) const

{

    return strstr16(mString, chrs) != nullptr;

}



status_t String16::makeLower()

{

    const size_t N = size();

libutils/Unicode.cpp

+26 −3
Original line number Diff line number Diff line
@@ -222,11 +222,16 @@ int strncmp16(const char16_t *s1, const char16_t *s2, size_t n) 
  char16_t ch;

  int d = 0;



  while ( n-- ) {

  if (n == 0) {

    return 0;

  }



  do {

    d = (int)(ch = *s1++) - (int)*s2++;

    if ( d || !ch )

    if ( d || !ch ) {

      break;

    }

  } while (--n);



  return d;

}
@@ -284,6 +289,24 @@ size_t strnlen16(const char16_t *s, size_t maxlen) 
  return ss-s;

}



char16_t* strstr16(const char16_t* src, const char16_t* target)

{

    const char16_t needle = *target++;

    if (needle != '\0') {

      do {

        do {

          if (*src == '\0') {

            return nullptr;

          }

        } while (*src++ != needle);

      } while (strcmp16(src, target) != 0);

      src--;

    }



    return (char16_t*)src;

}





int strzcmp16(const char16_t *s1, size_t n1, const char16_t *s2, size_t n2)

{

    const char16_t* e1 = s1+n1;

libutils/tests/Unicode_test.cpp

+35 −0
Original line number Diff line number Diff line
@@ -29,6 +29,8 @@ protected: 


    virtual void TearDown() {

    }



    char16_t const * const kSearchString = u"I am a leaf on the wind.";

};



TEST_F(UnicodeTest, UTF8toUTF16ZeroLength) {
@@ -112,4 +114,37 @@ TEST_F(UnicodeTest, UTF8toUTF16Normal) { 
            << "should be NULL terminated";

}



TEST_F(UnicodeTest, strstr16EmptyTarget) {

    EXPECT_EQ(strstr16(kSearchString, u""), kSearchString)

            << "should return the original pointer";

}



TEST_F(UnicodeTest, strstr16SameString) {

    const char16_t* result = strstr16(kSearchString, kSearchString);

    EXPECT_EQ(kSearchString, result)

            << "should return the original pointer";

}



TEST_F(UnicodeTest, strstr16TargetStartOfString) {

    const char16_t* result = strstr16(kSearchString, u"I am");

    EXPECT_EQ(kSearchString, result)

            << "should return the original pointer";

}





TEST_F(UnicodeTest, strstr16TargetEndOfString) {

    const char16_t* result = strstr16(kSearchString, u"wind.");

    EXPECT_EQ(kSearchString+19, result);

}



TEST_F(UnicodeTest, strstr16TargetWithinString) {

    const char16_t* result = strstr16(kSearchString, u"leaf");

    EXPECT_EQ(kSearchString+7, result);

}



TEST_F(UnicodeTest, strstr16TargetNotPresent) {

    const char16_t* result = strstr16(kSearchString, u"soar");

    EXPECT_EQ(nullptr, result);

}



}