The Tor Browser: comparison media/omx-plugin/include/gb/utils/String8.h

--1:000000000000
+:902247d59d1b
+/*
+* Copyright (C) 2005 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+#ifndef ANDROID_STRING8_H
+#define ANDROID_STRING8_H
+#include <utils/Errors.h>
+// Need this for the char16_t type; String8.h should not
+// be depedent on the String16 class.
+#include <utils/String16.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+// ---------------------------------------------------------------------------
+extern "C" {
+#if !defined(__cplusplus) || __cplusplus == 199711L // C or C++98
+typedef uint32_t char32_t;
+#endif
+size_t strlen32(const char32_t *);
+size_t strnlen32(const char32_t *, size_t);
+/*
+* Returns the length of "src" when "src" is valid UTF-8 string.
+* Returns 0 if src is NULL, 0-length string or non UTF-8 string.
+* This function should be used to determine whether "src" is valid UTF-8
+* characters with valid unicode codepoints. "src" must be null-terminated.
+*
+* If you are going to use other GetUtf... functions defined in this header
+* with string which may not be valid UTF-8 with valid codepoint (form 0 to
+* 0x10FFFF), you should use this function before calling others, since the
+* other functions do not check whether the string is valid UTF-8 or not.
+*
+* If you do not care whether "src" is valid UTF-8 or not, you should use
+* strlen() as usual, which should be much faster.
+*/
+size_t utf8_length(const char *src);
+/*
+* Returns the UTF-32 length of "src".
+*/
+size_t utf32_length(const char *src, size_t src_len);
+/*
+* Returns the UTF-8 length of "src".
+*/
+size_t utf8_length_from_utf16(const char16_t *src, size_t src_len);
+/*
+* Returns the UTF-8 length of "src".
+*/
+size_t utf8_length_from_utf32(const char32_t *src, size_t src_len);
+/*
+* Returns the unicode value at "index".
+* Returns -1 when the index is invalid (equals to or more than "src_len").
+* If returned value is positive, it is able to be converted to char32_t, which
+* is unsigned. Then, if "next_index" is not NULL, the next index to be used is
+* stored in "next_index". "next_index" can be NULL.
+*/
+int32_t utf32_at(const char *src, size_t src_len,
+size_t index, size_t *next_index);
+/*
+* Stores a UTF-32 string converted from "src" in "dst", if "dst_length" is not
+* large enough to store the string, the part of the "src" string is stored
+* into "dst".
+* Returns the size actually used for storing the string.
+* "dst" is not null-terminated when dst_len is fully used (like strncpy).
+*/
+size_t utf8_to_utf32(const char* src, size_t src_len,
+char32_t* dst, size_t dst_len);
+/*
+* Stores a UTF-8 string converted from "src" in "dst", if "dst_length" is not
+* large enough to store the string, the part of the "src" string is stored
+* into "dst" as much as possible. See the examples for more detail.
+* Returns the size actually used for storing the string.
+* dst" is not null-terminated when dst_len is fully used (like strncpy).
+*
+* Example 1
+* "src" == \u3042\u3044 (\xE3\x81\x82\xE3\x81\x84)
+* "src_len" == 2
+* "dst_len" >= 7
+* ->
+* Returned value == 6
+* "dst" becomes \xE3\x81\x82\xE3\x81\x84\0
+* (note that "dst" is null-terminated)
+*
+* Example 2
+* "src" == \u3042\u3044 (\xE3\x81\x82\xE3\x81\x84)
+* "src_len" == 2
+* "dst_len" == 5
+* ->
+* Returned value == 3
+* "dst" becomes \xE3\x81\x82\0
+* (note that "dst" is null-terminated, but \u3044 is not stored in "dst"
+* since "dst" does not have enough size to store the character)
+*
+* Example 3
+* "src" == \u3042\u3044 (\xE3\x81\x82\xE3\x81\x84)
+* "src_len" == 2
+* "dst_len" == 6
+* ->
+* Returned value == 6
+* "dst" becomes \xE3\x81\x82\xE3\x81\x84
+* (note that "dst" is NOT null-terminated, like strncpy)
+*/
+size_t utf32_to_utf8(const char32_t* src, size_t src_len,
+char* dst, size_t dst_len);
+size_t utf16_to_utf8(const char16_t* src, size_t src_len,
+char* dst, size_t dst_len);
+}
+// ---------------------------------------------------------------------------
+namespace android {
+class TextOutput;
+//! This is a string holding UTF-8 characters. Does not allow the value more
+// than 0x10FFFF, which is not valid unicode codepoint.
+class String8
+{
+public:
+String8();
+String8(const String8& o);
+explicit                    String8(const char* o);
+explicit                    String8(const char* o, size_t numChars);
+explicit                    String8(const String16& o);
+explicit                    String8(const char16_t* o);
+explicit                    String8(const char16_t* o, size_t numChars);
+explicit                    String8(const char32_t* o);
+explicit                    String8(const char32_t* o, size_t numChars);
+~String8();
+inline  const char*         string() const;
+inline  size_t              size() const;
+inline  size_t              length() const;
+inline  size_t              bytes() const;
+inline  const SharedBuffer* sharedBuffer() const;
+void                setTo(const String8& other);
+status_t            setTo(const char* other);
+status_t            setTo(const char* other, size_t numChars);
+status_t            setTo(const char16_t* other, size_t numChars);
+status_t            setTo(const char32_t* other,
+size_t length);
+status_t            append(const String8& other);
+status_t            append(const char* other);
+status_t            append(const char* other, size_t numChars);
+status_t            appendFormat(const char* fmt, ...)
+__attribute__((format (printf, 2, 3)));
+// Note that this function takes O(N) time to calculate the value.
+// No cache value is stored.
+size_t              getUtf32Length() const;
+int32_t             getUtf32At(size_t index,
+size_t *next_index) const;
+size_t              getUtf32(char32_t* dst, size_t dst_len) const;
+inline  String8&            operator=(const String8& other);
+inline  String8&            operator=(const char* other);
+inline  String8&            operator+=(const String8& other);
+inline  String8             operator+(const String8& other) const;
+inline  String8&            operator+=(const char* other);
+inline  String8             operator+(const char* other) const;
+inline  int                 compare(const String8& other) const;
+inline  bool                operator<(const String8& other) const;
+inline  bool                operator<=(const String8& other) const;
+inline  bool                operator==(const String8& other) const;
+inline  bool                operator!=(const String8& other) const;
+inline  bool                operator>=(const String8& other) const;
+inline  bool                operator>(const String8& other) const;
+inline  bool                operator<(const char* other) const;
+inline  bool                operator<=(const char* other) const;
+inline  bool                operator==(const char* other) const;
+inline  bool                operator!=(const char* other) const;
+inline  bool                operator>=(const char* other) const;
+inline  bool                operator>(const char* other) const;
+inline                      operator const char*() const;
+char*               lockBuffer(size_t size);
+void                unlockBuffer();
+status_t            unlockBuffer(size_t size);
+// return the index of the first byte of other in this at or after
+// start, or -1 if not found
+ssize_t             find(const char* other, size_t start = 0) const;
+void                toLower();
+void                toLower(size_t start, size_t numChars);
+void                toUpper();
+void                toUpper(size_t start, size_t numChars);
+/*
+* These methods operate on the string as if it were a path name.
+*/
+/*
+* Set the filename field to a specific value.
+*
+* Normalizes the filename, removing a trailing '/' if present.
+*/
+void setPathName(const char* name);
+void setPathName(const char* name, size_t numChars);
+/*
+* Get just the filename component.
+*
+* "/tmp/foo/bar.c" --> "bar.c"
+*/
+String8 getPathLeaf(void) const;
+/*
+* Remove the last (file name) component, leaving just the directory
+* name.
+*
+* "/tmp/foo/bar.c" --> "/tmp/foo"
+* "/tmp" --> "" // ????? shouldn't this be "/" ???? XXX
+* "bar.c" --> ""
+*/
+String8 getPathDir(void) const;
+/*
+* Retrieve the front (root dir) component.  Optionally also return the
+* remaining components.
+*
+* "/tmp/foo/bar.c" --> "tmp" (remain = "foo/bar.c")
+* "/tmp" --> "tmp" (remain = "")
+* "bar.c" --> "bar.c" (remain = "")
+*/
+String8 walkPath(String8* outRemains = NULL) const;
+/*
+* Return the filename extension.  This is the last '.' and up to
+* four characters that follow it.  The '.' is included in case we
+* decide to expand our definition of what constitutes an extension.
+*
+* "/tmp/foo/bar.c" --> ".c"
+* "/tmp" --> ""
+* "/tmp/foo.bar/baz" --> ""
+* "foo.jpeg" --> ".jpeg"
+* "foo." --> ""
+*/
+String8 getPathExtension(void) const;
+/*
+* Return the path without the extension.  Rules for what constitutes
+* an extension are described in the comment for getPathExtension().
+*
+* "/tmp/foo/bar.c" --> "/tmp/foo/bar"
+*/
+String8 getBasePath(void) const;
+/*
+* Add a component to the pathname.  We guarantee that there is
+* exactly one path separator between the old path and the new.
+* If there is no existing name, we just copy the new name in.
+*
+* If leaf is a fully qualified path (i.e. starts with '/', it
+* replaces whatever was there before.
+*/
+String8& appendPath(const char* leaf);
+String8& appendPath(const String8& leaf)  { return appendPath(leaf.string()); }
+/*
+* Like appendPath(), but does not affect this string.  Returns a new one instead.
+*/
+String8 appendPathCopy(const char* leaf) const
+{ String8 p(*this); p.appendPath(leaf); return p; }
+String8 appendPathCopy(const String8& leaf) const { return appendPathCopy(leaf.string()); }
+/*
+* Converts all separators in this string to /, the default path separator.
+*
+* If the default OS separator is backslash, this converts all
+* backslashes to slashes, in-place. Otherwise it does nothing.
+* Returns self.
+*/
+String8& convertToResPath();
+private:
+status_t            real_append(const char* other, size_t numChars);
+char*               find_extension(void) const;
+const char* mString;
+};
+TextOutput& operator<<(TextOutput& to, const String16& val);
+// ---------------------------------------------------------------------------
+// No user servicable parts below.
+inline int compare_type(const String8& lhs, const String8& rhs)
+{
+return lhs.compare(rhs);
+}
+inline int strictly_order_type(const String8& lhs, const String8& rhs)
+{
+return compare_type(lhs, rhs) < 0;
+}
+inline const char* String8::string() const
+{
+return mString;
+}
+inline size_t String8::length() const
+{
+return SharedBuffer::sizeFromData(mString)-1;
+}
+inline size_t String8::size() const
+{
+return length();
+}
+inline size_t String8::bytes() const
+{
+return SharedBuffer::sizeFromData(mString)-1;
+}
+inline const SharedBuffer* String8::sharedBuffer() const
+{
+return SharedBuffer::bufferFromData(mString);
+}
+inline String8& String8::operator=(const String8& other)
+{
+setTo(other);
+return *this;
+}
+inline String8& String8::operator=(const char* other)
+{
+setTo(other);
+return *this;
+}
+inline String8& String8::operator+=(const String8& other)
+{
+append(other);
+return *this;
+}
+inline String8 String8::operator+(const String8& other) const
+{
+String8 tmp(*this);
+tmp += other;
+return tmp;
+}
+inline String8& String8::operator+=(const char* other)
+{
+append(other);
+return *this;
+}
+inline String8 String8::operator+(const char* other) const
+{
+String8 tmp(*this);
+tmp += other;
+return tmp;
+}
+inline int String8::compare(const String8& other) const
+{
+return strcmp(mString, other.mString);
+}
+inline bool String8::operator<(const String8& other) const
+{
+return strcmp(mString, other.mString) < 0;
+}
+inline bool String8::operator<=(const String8& other) const
+{
+return strcmp(mString, other.mString) <= 0;
+}
+inline bool String8::operator==(const String8& other) const
+{
+return strcmp(mString, other.mString) == 0;
+}
+inline bool String8::operator!=(const String8& other) const
+{
+return strcmp(mString, other.mString) != 0;
+}
+inline bool String8::operator>=(const String8& other) const
+{
+return strcmp(mString, other.mString) >= 0;
+}
+inline bool String8::operator>(const String8& other) const
+{
+return strcmp(mString, other.mString) > 0;
+}
+inline bool String8::operator<(const char* other) const
+{
+return strcmp(mString, other) < 0;
+}
+inline bool String8::operator<=(const char* other) const
+{
+return strcmp(mString, other) <= 0;
+}
+inline bool String8::operator==(const char* other) const
+{
+return strcmp(mString, other) == 0;
+}
+inline bool String8::operator!=(const char* other) const
+{
+return strcmp(mString, other) != 0;
+}
+inline bool String8::operator>=(const char* other) const
+{
+return strcmp(mString, other) >= 0;
+}
+inline bool String8::operator>(const char* other) const
+{
+return strcmp(mString, other) > 0;
+}
+inline String8::operator const char*() const
+{
+return mString;
+}
+}  // namespace android
+// ---------------------------------------------------------------------------
+#endif // ANDROID_STRING8_H

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comparison: media/omx-plugin/include/gb/utils/String8.h

media/omx-plugin/include/gb/utils/String8.h