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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef A_STRING_H_
     18 
     19 #define A_STRING_H_
     20 
     21 #include <utils/Errors.h>
     22 #include <sys/types.h>
     23 
     24 namespace android {
     25 
     26 class String8;
     27 class Parcel;
     28 
     29 struct AString {
     30     AString();
     31     AString(const char *s);  // NOLINT, implicit conversion
     32     AString(const char *s, size_t size);
     33     AString(const String8 &from);  // NOLINT, implicit conversion
     34     AString(const AString &from);
     35     AString(const AString &from, size_t offset, size_t n);
     36     ~AString();
     37 
     38     AString &operator=(const AString &from);
     39     void setTo(const char *s);
     40     void setTo(const char *s, size_t size);
     41     void setTo(const AString &from, size_t offset, size_t n);
     42 
     43     size_t size() const;
     44     const char *c_str() const;
     45 
     46     bool empty() const;
     47 
     48     void clear();
     49     void trim();
     50     void erase(size_t start, size_t n);
     51 
     52     void append(char c) { append(&c, 1); }
     53     void append(const char *s);
     54     void append(const char *s, size_t size);
     55     void append(const AString &from);
     56     void append(const AString &from, size_t offset, size_t n);
     57     void append(int x);
     58     void append(unsigned x);
     59     void append(long x);
     60     void append(unsigned long x);
     61     void append(long long x);
     62     void append(unsigned long long x);
     63     void append(float x);
     64     void append(double x);
     65     void append(void *x);
     66 
     67     void insert(const AString &from, size_t insertionPos);
     68     void insert(const char *from, size_t size, size_t insertionPos);
     69 
     70     ssize_t find(const char *substring, size_t start = 0) const;
     71 
     72     size_t hash() const;
     73 
     74     bool operator==(const AString &other) const;
     75     bool operator!=(const AString &other) const {
     76         return !operator==(other);
     77     }
     78     bool operator<(const AString &other) const;
     79     bool operator>(const AString &other) const;
     80 
     81     int compare(const AString &other) const;
     82     int compareIgnoreCase(const AString &other) const;
     83 
     84     bool equalsIgnoreCase(const AString &other) const;
     85     bool startsWith(const char *prefix) const;
     86     bool endsWith(const char *suffix) const;
     87     bool startsWithIgnoreCase(const char *prefix) const;
     88     bool endsWithIgnoreCase(const char *suffix) const;
     89 
     90     void tolower();
     91 
     92     static AString FromParcel(const Parcel &parcel);
     93     status_t writeToParcel(Parcel *parcel) const;
     94 
     95 private:
     96     static const char *kEmptyString;
     97 
     98     char *mData;
     99     size_t mSize;
    100     size_t mAllocSize;
    101 
    102     void makeMutable();
    103 };
    104 
    105 AString AStringPrintf(const char *format, ...);
    106 
    107 }  // namespace android
    108 
    109 #endif  // A_STRING_H_
    110 
    111