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chore: add string::fromHexChar

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This commit is contained in:
sithlord48
2025-01-25 08:08:03 -05:00
committed by Nick Bolton
parent 9b1489384c
commit 3125eba014
3 changed files with 66 additions and 0 deletions
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32
src/lib/base/String.cpp
View File

@ -187,6 +187,38 @@ std::string toHex(const std::string &subject, int width, const char fill)
return ss.str();
}
// clang-format off
int fromHexChar(char c)
{
switch (c) {
case '0': return 0;
case '1': return 1;
case '2': return 2;
case '3': return 3;
case '4': return 4;
case '5': return 5;
case '6': return 6;
case '7': return 7;
case '8': return 8;
case '9': return 9;
case 'a':
case 'A': return 10;
case 'b':
case 'B': return 11;
case 'c':
case 'C': return 12;
case 'd':
case 'D': return 13;
case 'e':
case 'E': return 14;
case 'f':
case 'F': return 15;
default: return -1;
}
return -1;
}
// clang-format on
void uppercase(std::string &subject)
{
std::transform(subject.begin(), subject.end(), subject.begin(), ::toupper);

7
src/lib/base/String.h
View File

@ -75,6 +75,13 @@ Return a new hexString
*/
std::string toHex(const std::string &subject, int width, const char fill = '0');
/**
* @brief fromHexChar Convert a single char to its hexidecmal value
* @param c input char 0-F
* @return The value of c in Hex or -1 for invalid hex chars
*/
int fromHexChar(char c);
//! Convert to all uppercase
/*!
Convert each character in \c subject to uppercase

27
src/test/unittests/base/StringTests.cpp
View File

@ -59,6 +59,33 @@ TEST(StringTests, toHex_plaintext_hexString)
EXPECT_EQ("666f6f626172", string::toHex("foobar", 2));
}
TEST(StringTests, fromHexChar_plaintext_hexString)
{
EXPECT_EQ(-1, string::fromHexChar('z'));
EXPECT_EQ(0, string::fromHexChar('0'));
EXPECT_EQ(1, string::fromHexChar('1'));
EXPECT_EQ(2, string::fromHexChar('2'));
EXPECT_EQ(3, string::fromHexChar('3'));
EXPECT_EQ(4, string::fromHexChar('4'));
EXPECT_EQ(5, string::fromHexChar('5'));
EXPECT_EQ(6, string::fromHexChar('6'));
EXPECT_EQ(7, string::fromHexChar('7'));
EXPECT_EQ(8, string::fromHexChar('8'));
EXPECT_EQ(9, string::fromHexChar('9'));
EXPECT_EQ(10, string::fromHexChar('a'));
EXPECT_EQ(10, string::fromHexChar('A'));
EXPECT_EQ(11, string::fromHexChar('b'));
EXPECT_EQ(11, string::fromHexChar('B'));
EXPECT_EQ(12, string::fromHexChar('c'));
EXPECT_EQ(12, string::fromHexChar('C'));
EXPECT_EQ(13, string::fromHexChar('d'));
EXPECT_EQ(13, string::fromHexChar('D'));
EXPECT_EQ(14, string::fromHexChar('e'));
EXPECT_EQ(14, string::fromHexChar('E'));
EXPECT_EQ(15, string::fromHexChar('f'));
EXPECT_EQ(15, string::fromHexChar('F'));
}
TEST(StringTests, uppercase_lowercaseInput_uppercaseOutput)
{
std::string subject = "12foo3BaR";