Kodi Development 22.0
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String compare
C++ » Interface - kodi::tools » class StringUtils

Detailed Description

Check strings for the desired state
With this, texts can be checked to see that they correspond to a required format.

Function Documentation

◆ EqualsNoCase() [1/3]

static bool EqualsNoCase ( const std::string & str1,
const std::string & str2 )
inlinestatic

Compare two strings with ignore of lower-/uppercase.

Parameters
[in]str1C++ string to compare
[in]str2C++ string to compare
Returns
True if the strings are equal, false otherwise

Example:

#include <kodi/tools/StringUtils.h>
std::string refstr = "TeSt";
EXPECT_TRUE(kodi::tools::StringUtils::EqualsNoCase(refstr, "TeSt"));
EXPECT_TRUE(kodi::tools::StringUtils::EqualsNoCase(refstr, "tEsT"));
kodi::tools::StringUtils::EqualsNoCase
static bool EqualsNoCase(const std::string &str1, const std::string &str2)
Compare two strings with ignore of lower-/uppercase.
Definition StringUtils.h:1561

◆ EqualsNoCase() [2/3]

static bool EqualsNoCase ( const std::string & str1,
const char * s2 )
inlinestatic

Compare two strings with ignore of lower-/uppercase.

Parameters
[in]str1C++ string to compare
[in]s2C string to compare
Returns
True if the strings are equal, false otherwise

◆ EqualsNoCase() [3/3]

static bool EqualsNoCase ( const char * s1,
const char * s2 )
inlinestatic

Compare two strings with ignore of lower-/uppercase.

Parameters
[in]s1C string to compare
[in]s2C string to compare
Returns
True if the strings are equal, false otherwise

◆ CompareNoCase() [1/2]

static int CompareNoCase ( const std::string & str1,
const std::string & str2,
size_t n = 0 )
inlinestatic

Compare two strings with ignore of lower-/uppercase with given size.

Equal to EqualsNoCase only that size can defined and on return the difference between compared character becomes given.

Parameters
[in]str1C++ string to compare
[in]str2C++ string to compare
[in]n[opt] Length to check, 0 as default to make complete
Returns
0 if equal, otherwise difference of failed character in string to other ("a" - "b" = -1)

◆ CompareNoCase() [2/2]

static int CompareNoCase ( const char * s1,
const char * s2,
size_t n = 0 )
inlinestatic

Compare two strings with ignore of lower-/uppercase with given size.

Equal to EqualsNoCase only that size can defined and on return the difference between compared character becomes given.

Parameters
[in]s1C string to compare
[in]s2C string to compare
[in]n[opt] Length to check, 0 as default to make complete
Returns
0 if equal, otherwise difference of failed character in string to other ("a" - "b" = -1)

◆ StartsWith() [1/3]

static bool StartsWith ( const std::string & str1,
const std::string & str2 )
inlinestatic

Checks a string for the begin of another string.

Parameters
[in]str1C++ string to be checked
[in]str2C++ string with which text defined in str1 is checked at the beginning
Returns
True if string started with asked text, false otherwise

Example:

#include <kodi/tools/StringUtils.h>
bool ret;
std::string refstr = "test";
ret = kodi::tools::StringUtils::StartsWith(refstr, "te");
fprintf(stderr, "Expect true for here and is '%s'\n", ret ? "true" : "false");
ret = kodi::tools::StringUtils::StartsWith(refstr, "abc");
fprintf(stderr, "Expect false for here and is '%s'\n", ret ? "true" : "false");
kodi::tools::StringUtils::StartsWith
static bool StartsWith(const std::string &str1, const std::string &str2)
Checks a string for the begin of another string.
Definition StringUtils.h:1682

◆ StartsWith() [2/3]

static bool StartsWith ( const std::string & str1,
const char * s2 )
inlinestatic

Checks a string for the begin of another string.

Parameters
[in]str1C++ string to be checked
[in]s2C string with which text defined in str1 is checked at the beginning
Returns
True if string started with asked text, false otherwise

◆ StartsWith() [3/3]

static bool StartsWith ( const char * s1,
const char * s2 )
inlinestatic

Checks a string for the begin of another string.

Parameters
[in]s1C string to be checked
[in]s2C string with which text defined in str1 is checked at the beginning
Returns
True if string started with asked text, false otherwise

◆ StartsWithNoCase() [1/3]

static bool StartsWithNoCase ( const std::string & str1,
const std::string & str2 )
inlinestatic

Checks a string for the begin of another string by ignore of upper-/lowercase.

Parameters
[in]str1C++ string to be checked
[in]str2C++ string with which text defined in str1 is checked at the beginning
Returns
True if string started with asked text, false otherwise

Example:

#include <kodi/tools/StringUtils.h>
bool ret;
std::string refstr = "test";
ret = kodi::tools::StringUtils::StartsWithNoCase(refstr, "te");
fprintf(stderr, "Expect true for here and is '%s'\n", ret ? "true" : "false");
ret = kodi::tools::StringUtils::StartsWithNoCase(refstr, "TEs");
fprintf(stderr, "Expect true for here and is '%s'\n", ret ? "true" : "false");
ret = kodi::tools::StringUtils::StartsWithNoCase(refstr, "abc");
fprintf(stderr, "Expect false for here and is '%s'\n", ret ? "true" : "false");
kodi::tools::StringUtils::StartsWithNoCase
static bool StartsWithNoCase(const std::string &str1, const std::string &str2)
Checks a string for the begin of another string by ignore of upper-/lowercase.
Definition StringUtils.h:1751

◆ StartsWithNoCase() [2/3]

static bool StartsWithNoCase ( const std::string & str1,
const char * s2 )
inlinestatic

Checks a string for the begin of another string by ignore of upper-/lowercase.

Parameters
[in]str1C++ string to be checked
[in]s2C string with which text defined in str1 is checked at the beginning
Returns
True if string started with asked text, false otherwise

◆ StartsWithNoCase() [3/3]

static bool StartsWithNoCase ( const char * s1,
const char * s2 )
inlinestatic

Checks a string for the begin of another string by ignore of upper-/lowercase.

Parameters
[in]s1C string to be checked
[in]s2C string with which text defined in str1 is checked at the beginning
Returns
True if string started with asked text, false otherwise

◆ EndsWith() [1/2]

static bool EndsWith ( const std::string & str1,
const std::string & str2 )
inlinestatic

Checks a string for the ending of another string.

Parameters
[in]str1C++ string to be checked
[in]str2C++ string with which text defined in str1 is checked at the ending
Returns
True if string ended with asked text, false otherwise

Example:

#include <kodi/tools/StringUtils.h>
bool ret;
std::string refstr = "test";
ret = kodi::tools::StringUtils::EndsWith(refstr, "st");
fprintf(stderr, "Expect true for here and is '%s'\n", ret ? "true" : "false");
ret = kodi::tools::StringUtils::EndsWith(refstr, "abc");
fprintf(stderr, "Expect false for here and is '%s'\n", ret ? "true" : "false");
kodi::tools::StringUtils::EndsWith
static bool EndsWith(const std::string &str1, const std::string &str2)
Checks a string for the ending of another string.
Definition StringUtils.h:1818

◆ EndsWith() [2/2]

static bool EndsWith ( const std::string & str1,
const char * s2 )
inlinestatic

Checks a string for the ending of another string.

Parameters
[in]str1C++ string to be checked
[in]s2C string with which text defined in str1 is checked at the ending
Returns
True if string ended with asked text, false otherwise

◆ EndsWithNoCase() [1/2]

static bool EndsWithNoCase ( const std::string & str1,
const std::string & str2 )
inlinestatic

Checks a string for the ending of another string by ignore of upper-/lowercase.

Parameters
[in]str1C++ string to be checked
[in]str2C++ string with which text defined in str1 is checked at the ending
Returns
True if string ended with asked text, false otherwise

Example:

#include <kodi/tools/StringUtils.h>
bool ret;
std::string refstr = "test";
ret = kodi::tools::StringUtils::EndsWithNoCase(refstr, "ST");
fprintf(stderr, "Expect true for here and is '%s'\n", ret ? "true" : "false");
ret = kodi::tools::StringUtils::EndsWithNoCase(refstr, "ABC");
fprintf(stderr, "Expect false for here and is '%s'\n", ret ? "true" : "false");
kodi::tools::StringUtils::EndsWithNoCase
static bool EndsWithNoCase(const std::string &str1, const std::string &str2)
Checks a string for the ending of another string by ignore of upper-/lowercase.
Definition StringUtils.h:1868

◆ EndsWithNoCase() [2/2]

static bool EndsWithNoCase ( const std::string & str1,
const char * s2 )
inlinestatic

Checks a string for the ending of another string by ignore of upper-/lowercase.

Parameters
[in]str1C++ string to be checked
[in]s2C string with which text defined in str1 is checked at the ending
Returns
True if string ended with asked text, false otherwise

◆ AlphaNumericCompare()

static int64_t AlphaNumericCompare ( const wchar_t * left,
const wchar_t * right )
inlinestatic

Compare two strings by his calculated alpha numeric values.

Parameters
[in]leftLeft string to compare with right
[in]rightRight string to compare with left
Returns
Return about compare
  • 0 if left and right the same
  • -1 if right is longer
  • 1 if left is longer
  • < 0 if less equal
  • > 0 if more equal

Example:

#include <kodi/tools/StringUtils.h>
int64_t ref, var;
ref = 0;
var = kodi::tools::StringUtils::AlphaNumericCompare(L"123abc", L"abc123");
EXPECT_LT(var, ref);
kodi::tools::StringUtils::AlphaNumericCompare
static int64_t AlphaNumericCompare(const wchar_t *left, const wchar_t *right)
Compare two strings by his calculated alpha numeric values.
Definition StringUtils.h:1936

◆ Utf8StringLength()

static size_t Utf8StringLength ( const char * s)
inlinestatic

UTF8 version of strlen.

Skips any non-starting bytes in the count, thus returning the number of utf8 characters.

Parameters
[in]sc-string to find the length of.
Returns
The number of utf8 characters in the string.

◆ IsSpace()

static int IsSpace ( char c)
inlinestatic

Check given character is a space.

Hack to check only first byte of UTF-8 character without this hack "TrimX" functions failed on Win32 and OS X with UTF-8 strings

Parameters
[in]cCharacter to check
Returns
true if space, false otherwise

◆ IsUTF8Letter()

static int IsUTF8Letter ( const unsigned char * str)
inlinestatic

Checks given pointer in string is a UTF8 letter.

Parameters
[in]strGiven character values to check, must be minimum array of 2
Returns
return -1 if not, else return the utf8 char length.

◆ IsNaturalNumber()

static bool IsNaturalNumber ( const std::string & str)
inlinestatic

Check whether a string is a natural number.

Matches [ \t]*[0-9]+[ \t]*

Parameters
[in]strThe string to check
Returns
true if the string is a natural number, false otherwise.

Example:

#include <kodi/tools/StringUtils.h>
EXPECT_TRUE(kodi::tools::StringUtils::IsNaturalNumber("10"));
EXPECT_TRUE(kodi::tools::StringUtils::IsNaturalNumber(" 10"));
EXPECT_TRUE(kodi::tools::StringUtils::IsNaturalNumber("0"));
EXPECT_FALSE(kodi::tools::StringUtils::IsNaturalNumber(" 1 0"));
EXPECT_FALSE(kodi::tools::StringUtils::IsNaturalNumber("1.0"));
EXPECT_FALSE(kodi::tools::StringUtils::IsNaturalNumber("1.1"));
EXPECT_FALSE(kodi::tools::StringUtils::IsNaturalNumber("0x1"));
EXPECT_FALSE(kodi::tools::StringUtils::IsNaturalNumber("blah"));
EXPECT_FALSE(kodi::tools::StringUtils::IsNaturalNumber("120 h"));
EXPECT_FALSE(kodi::tools::StringUtils::IsNaturalNumber(" "));
EXPECT_FALSE(kodi::tools::StringUtils::IsNaturalNumber(""));
kodi::tools::StringUtils::IsNaturalNumber
static bool IsNaturalNumber(const std::string &str)
Check whether a string is a natural number.
Definition StringUtils.h:2100

◆ IsInteger()

static bool IsInteger ( const std::string & str)
inlinestatic

Check whether a string is an integer.

Matches [ \t]*[\-]*[0-9]+[ \t]*

Parameters
strThe string to check
Returns
true if the string is an integer, false otherwise.

Example:

#include <kodi/tools/StringUtils.h>
EXPECT_TRUE(kodi::tools::StringUtils::IsInteger("10"));
EXPECT_TRUE(kodi::tools::StringUtils::IsInteger(" -10"));
EXPECT_TRUE(kodi::tools::StringUtils::IsInteger("0"));
EXPECT_FALSE(kodi::tools::StringUtils::IsInteger(" 1 0"));
EXPECT_FALSE(kodi::tools::StringUtils::IsInteger("1.0"));
EXPECT_FALSE(kodi::tools::StringUtils::IsInteger("1.1"));
EXPECT_FALSE(kodi::tools::StringUtils::IsInteger("0x1"));
EXPECT_FALSE(kodi::tools::StringUtils::IsInteger("blah"));
EXPECT_FALSE(kodi::tools::StringUtils::IsInteger("120 h"));
EXPECT_FALSE(kodi::tools::StringUtils::IsInteger(" "));
EXPECT_FALSE(kodi::tools::StringUtils::IsInteger(""));
kodi::tools::StringUtils::IsInteger
static bool IsInteger(const std::string &str)
Check whether a string is an integer.
Definition StringUtils.h:2144

◆ IsAasciiDigit()

static bool IsAasciiDigit ( char chr)
inlinestatic

Checks a character is ascii number.

Parameters
[in]chrSingle character to test
Returns
true if yes, false otherwise

◆ IsAsciiXDigit()

static bool IsAsciiXDigit ( char chr)
inlinestatic

Checks a character is ascii hexadecimal number.

Parameters
[in]chrSingle character to test
Returns
true if yes, false otherwise

◆ AsciiDigitValue()

static int AsciiDigitValue ( char chr)
inlinestatic

Translate a character where defined as a numerical value (0-9) string to right integer.

Parameters
[in]chrSingle character to translate
Returns

◆ AsciiXDigitValue()

static int AsciiXDigitValue ( char chr)
inlinestatic

Translate a character where defined as a hexadecimal value string to right integer.

Parameters
[in]chrSingle character to translate
Returns
Corresponding integer value, e.g. character is "A" becomes returned as a integer with 10.

◆ IsAsciiUppercaseLetter()

static bool IsAsciiUppercaseLetter ( char chr)
inlinestatic

Checks a character is ascii alphabetic lowercase.

Parameters
[in]chrSingle character to test
Returns
True if ascii uppercase letter, false otherwise

◆ IsAsciiLowercaseLetter()

static bool IsAsciiLowercaseLetter ( char chr)
inlinestatic

Checks a character is ascii alphabetic lowercase.

Parameters
[in]chrSingle character to test
Returns
True if ascii lowercase letter, false otherwise

◆ IsAsciiAlphaNum()

static bool IsAsciiAlphaNum ( char chr)
inlinestatic

Checks a character is within ascii alphabetic and numerical fields.

Parameters
[in]chrSingle character to test
Returns
true if alphabetic / numerical ascii value

◆ ContainsKeyword()

static bool ContainsKeyword ( const std::string & str,
const std::vector< std::string > & keywords )
inlinestatic

Check a string for another text.

Parameters
[in]strString to search for keywords
[in]keywordsList of keywords to search in text
Returns
true if string contains word in list