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Diffstat (limited to 'third_party/abseil_cpp/absl/strings/ascii.h')
| -rw-r--r-- | third_party/abseil_cpp/absl/strings/ascii.h | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/third_party/abseil_cpp/absl/strings/ascii.h b/third_party/abseil_cpp/absl/strings/ascii.h deleted file mode 100644 index b46bc71f35b9..000000000000 --- a/third_party/abseil_cpp/absl/strings/ascii.h +++ /dev/null @@ -1,242 +0,0 @@ -// -// Copyright 2017 The Abseil Authors. -// -// 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 -// -// https://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. -// -// ----------------------------------------------------------------------------- -// File: ascii.h -// ----------------------------------------------------------------------------- -// -// This package contains functions operating on characters and strings -// restricted to standard ASCII. These include character classification -// functions analogous to those found in the ANSI C Standard Library <ctype.h> -// header file. -// -// C++ implementations provide <ctype.h> functionality based on their -// C environment locale. In general, reliance on such a locale is not ideal, as -// the locale standard is problematic (and may not return invariant information -// for the same character set, for example). These `ascii_*()` functions are -// hard-wired for standard ASCII, much faster, and guaranteed to behave -// consistently. They will never be overloaded, nor will their function -// signature change. -// -// `ascii_isalnum()`, `ascii_isalpha()`, `ascii_isascii()`, `ascii_isblank()`, -// `ascii_iscntrl()`, `ascii_isdigit()`, `ascii_isgraph()`, `ascii_islower()`, -// `ascii_isprint()`, `ascii_ispunct()`, `ascii_isspace()`, `ascii_isupper()`, -// `ascii_isxdigit()` -// Analogous to the <ctype.h> functions with similar names, these -// functions take an unsigned char and return a bool, based on whether the -// character matches the condition specified. -// -// If the input character has a numerical value greater than 127, these -// functions return `false`. -// -// `ascii_tolower()`, `ascii_toupper()` -// Analogous to the <ctype.h> functions with similar names, these functions -// take an unsigned char and return a char. -// -// If the input character is not an ASCII {lower,upper}-case letter (including -// numerical values greater than 127) then the functions return the same value -// as the input character. - -#ifndef ABSL_STRINGS_ASCII_H_ -#define ABSL_STRINGS_ASCII_H_ - -#include <algorithm> -#include <string> - -#include "absl/base/attributes.h" -#include "absl/base/config.h" -#include "absl/strings/string_view.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace ascii_internal { - -// Declaration for an array of bitfields holding character information. -ABSL_DLL extern const unsigned char kPropertyBits[256]; - -// Declaration for the array of characters to upper-case characters. -ABSL_DLL extern const char kToUpper[256]; - -// Declaration for the array of characters to lower-case characters. -ABSL_DLL extern const char kToLower[256]; - -} // namespace ascii_internal - -// ascii_isalpha() -// -// Determines whether the given character is an alphabetic character. -inline bool ascii_isalpha(unsigned char c) { - return (ascii_internal::kPropertyBits[c] & 0x01) != 0; -} - -// ascii_isalnum() -// -// Determines whether the given character is an alphanumeric character. -inline bool ascii_isalnum(unsigned char c) { - return (ascii_internal::kPropertyBits[c] & 0x04) != 0; -} - -// ascii_isspace() -// -// Determines whether the given character is a whitespace character (space, -// tab, vertical tab, formfeed, linefeed, or carriage return). -inline bool ascii_isspace(unsigned char c) { - return (ascii_internal::kPropertyBits[c] & 0x08) != 0; -} - -// ascii_ispunct() -// -// Determines whether the given character is a punctuation character. -inline bool ascii_ispunct(unsigned char c) { - return (ascii_internal::kPropertyBits[c] & 0x10) != 0; -} - -// ascii_isblank() -// -// Determines whether the given character is a blank character (tab or space). -inline bool ascii_isblank(unsigned char c) { - return (ascii_internal::kPropertyBits[c] & 0x20) != 0; -} - -// ascii_iscntrl() -// -// Determines whether the given character is a control character. -inline bool ascii_iscntrl(unsigned char c) { - return (ascii_internal::kPropertyBits[c] & 0x40) != 0; -} - -// ascii_isxdigit() -// -// Determines whether the given character can be represented as a hexadecimal -// digit character (i.e. {0-9} or {A-F}). -inline bool ascii_isxdigit(unsigned char c) { - return (ascii_internal::kPropertyBits[c] & 0x80) != 0; -} - -// ascii_isdigit() -// -// Determines whether the given character can be represented as a decimal -// digit character (i.e. {0-9}). -inline bool ascii_isdigit(unsigned char c) { return c >= '0' && c <= '9'; } - -// ascii_isprint() -// -// Determines whether the given character is printable, including whitespace. -inline bool ascii_isprint(unsigned char c) { return c >= 32 && c < 127; } - -// ascii_isgraph() -// -// Determines whether the given character has a graphical representation. -inline bool ascii_isgraph(unsigned char c) { return c > 32 && c < 127; } - -// ascii_isupper() -// -// Determines whether the given character is uppercase. -inline bool ascii_isupper(unsigned char c) { return c >= 'A' && c <= 'Z'; } - -// ascii_islower() -// -// Determines whether the given character is lowercase. -inline bool ascii_islower(unsigned char c) { return c >= 'a' && c <= 'z'; } - -// ascii_isascii() -// -// Determines whether the given character is ASCII. -inline bool ascii_isascii(unsigned char c) { return c < 128; } - -// ascii_tolower() -// -// Returns an ASCII character, converting to lowercase if uppercase is -// passed. Note that character values > 127 are simply returned. -inline char ascii_tolower(unsigned char c) { - return ascii_internal::kToLower[c]; -} - -// Converts the characters in `s` to lowercase, changing the contents of `s`. -void AsciiStrToLower(std::string* s); - -// Creates a lowercase string from a given absl::string_view. -ABSL_MUST_USE_RESULT inline std::string AsciiStrToLower(absl::string_view s) { - std::string result(s); - absl::AsciiStrToLower(&result); - return result; -} - -// ascii_toupper() -// -// Returns the ASCII character, converting to upper-case if lower-case is -// passed. Note that characters values > 127 are simply returned. -inline char ascii_toupper(unsigned char c) { - return ascii_internal::kToUpper[c]; -} - -// Converts the characters in `s` to uppercase, changing the contents of `s`. -void AsciiStrToUpper(std::string* s); - -// Creates an uppercase string from a given absl::string_view. -ABSL_MUST_USE_RESULT inline std::string AsciiStrToUpper(absl::string_view s) { - std::string result(s); - absl::AsciiStrToUpper(&result); - return result; -} - -// Returns absl::string_view with whitespace stripped from the beginning of the -// given string_view. -ABSL_MUST_USE_RESULT inline absl::string_view StripLeadingAsciiWhitespace( - absl::string_view str) { - auto it = std::find_if_not(str.begin(), str.end(), absl::ascii_isspace); - return str.substr(it - str.begin()); -} - -// Strips in place whitespace from the beginning of the given string. -inline void StripLeadingAsciiWhitespace(std::string* str) { - auto it = std::find_if_not(str->begin(), str->end(), absl::ascii_isspace); - str->erase(str->begin(), it); -} - -// Returns absl::string_view with whitespace stripped from the end of the given -// string_view. -ABSL_MUST_USE_RESULT inline absl::string_view StripTrailingAsciiWhitespace( - absl::string_view str) { - auto it = std::find_if_not(str.rbegin(), str.rend(), absl::ascii_isspace); - return str.substr(0, str.rend() - it); -} - -// Strips in place whitespace from the end of the given string -inline void StripTrailingAsciiWhitespace(std::string* str) { - auto it = std::find_if_not(str->rbegin(), str->rend(), absl::ascii_isspace); - str->erase(str->rend() - it); -} - -// Returns absl::string_view with whitespace stripped from both ends of the -// given string_view. -ABSL_MUST_USE_RESULT inline absl::string_view StripAsciiWhitespace( - absl::string_view str) { - return StripTrailingAsciiWhitespace(StripLeadingAsciiWhitespace(str)); -} - -// Strips in place whitespace from both ends of the given string -inline void StripAsciiWhitespace(std::string* str) { - StripTrailingAsciiWhitespace(str); - StripLeadingAsciiWhitespace(str); -} - -// Removes leading, trailing, and consecutive internal whitespace. -void RemoveExtraAsciiWhitespace(std::string*); - -ABSL_NAMESPACE_END -} // namespace absl - -#endif // ABSL_STRINGS_ASCII_H_ |