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Functions | Variables
strencodings.cpp File Reference
#include <util/strencodings.h>
#include <util/string.h>
#include <tinyformat.h>
#include <algorithm>
#include <cstdlib>
#include <cstring>
#include <optional>
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Functions

std::string SanitizeString (const std::string &str, int rule)
 Remove unsafe chars. More...
 
signed char HexDigit (char c)
 
bool IsHex (const std::string &str)
 
bool IsHexNumber (const std::string &str)
 Return true if the string is a hex number, optionally prefixed with "0x". More...
 
std::vector< unsigned char > ParseHex (const char *psz)
 
std::vector< unsigned char > ParseHex (const std::string &str)
 
void SplitHostPort (std::string in, uint16_t &portOut, std::string &hostOut)
 
std::string EncodeBase64 (Span< const unsigned char > input)
 
std::string EncodeBase64 (const std::string &str)
 
std::vector< unsigned char > DecodeBase64 (const char *p, bool *pf_invalid)
 
std::string DecodeBase64 (const std::string &str, bool *pf_invalid)
 
std::string EncodeBase32 (Span< const unsigned char > input, bool pad)
 Base32 encode. More...
 
std::string EncodeBase32 (const std::string &str, bool pad)
 Base32 encode. More...
 
std::vector< unsigned char > DecodeBase32 (const char *p, bool *pf_invalid)
 
std::string DecodeBase32 (const std::string &str, bool *pf_invalid)
 
bool ParseInt32 (const std::string &str, int32_t *out)
 Convert string to signed 32-bit integer with strict parse error feedback. More...
 
bool ParseInt64 (const std::string &str, int64_t *out)
 Convert string to signed 64-bit integer with strict parse error feedback. More...
 
bool ParseUInt8 (const std::string &str, uint8_t *out)
 Convert decimal string to unsigned 8-bit integer with strict parse error feedback. More...
 
bool ParseUInt16 (const std::string &str, uint16_t *out)
 Convert decimal string to unsigned 16-bit integer with strict parse error feedback. More...
 
bool ParseUInt32 (const std::string &str, uint32_t *out)
 Convert decimal string to unsigned 32-bit integer with strict parse error feedback. More...
 
bool ParseUInt64 (const std::string &str, uint64_t *out)
 Convert decimal string to unsigned 64-bit integer with strict parse error feedback. More...
 
std::string FormatParagraph (const std::string &in, size_t width, size_t indent)
 Format a paragraph of text to a fixed width, adding spaces for indentation to any added line. More...
 
static bool ProcessMantissaDigit (char ch, int64_t &mantissa, int &mantissa_tzeros)
 Helper function for ParseFixedPoint. More...
 
bool ParseFixedPoint (const std::string &val, int decimals, int64_t *amount_out)
 Parse number as fixed point according to JSON number syntax. More...
 
std::string ToLower (const std::string &str)
 Returns the lowercase equivalent of the given string. More...
 
std::string ToUpper (const std::string &str)
 Returns the uppercase equivalent of the given string. More...
 
std::string Capitalize (std::string str)
 Capitalizes the first character of the given string. More...
 
std::string HexStr (const Span< const uint8_t > s)
 Convert a span of bytes to a lower-case hexadecimal string. More...
 

Variables

static const std::string CHARS_ALPHA_NUM = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
 
static const std::string SAFE_CHARS []
 
const signed char p_util_hexdigit [256]
 
static const int64_t UPPER_BOUND = 1000000000000000000LL - 1LL
 Upper bound for mantissa. More...
 

Function Documentation

◆ Capitalize()

std::string Capitalize ( std::string  str)

Capitalizes the first character of the given string.

This function is locale independent. It only converts lowercase characters in the standard 7-bit ASCII range. This is a feature, not a limitation.

Parameters
[in]strthe string to capitalize.
Returns
string with the first letter capitalized.

Definition at line 509 of file strencodings.cpp.

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◆ DecodeBase32() [1/2]

std::vector<unsigned char> DecodeBase32 ( const char *  p,
bool *  pf_invalid 
)

Definition at line 225 of file strencodings.cpp.

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◆ DecodeBase32() [2/2]

std::string DecodeBase32 ( const std::string &  str,
bool *  pf_invalid 
)

Definition at line 272 of file strencodings.cpp.

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◆ DecodeBase64() [1/2]

std::vector<unsigned char> DecodeBase64 ( const char *  p,
bool *  pf_invalid 
)

Definition at line 146 of file strencodings.cpp.

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◆ DecodeBase64() [2/2]

std::string DecodeBase64 ( const std::string &  str,
bool *  pf_invalid 
)

Definition at line 193 of file strencodings.cpp.

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◆ EncodeBase32() [1/2]

std::string EncodeBase32 ( const std::string &  str,
bool  pad = true 
)

Base32 encode.

If pad is true, then the output will be padded with '=' so that its length is a multiple of 8.

Definition at line 220 of file strencodings.cpp.

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◆ EncodeBase32() [2/2]

std::string EncodeBase32 ( Span< const unsigned char >  input,
bool  pad = true 
)

Base32 encode.

If pad is true, then the output will be padded with '=' so that its length is a multiple of 8.

Definition at line 205 of file strencodings.cpp.

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◆ EncodeBase64() [1/2]

std::string EncodeBase64 ( const std::string &  str)

Definition at line 141 of file strencodings.cpp.

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◆ EncodeBase64() [2/2]

std::string EncodeBase64 ( Span< const unsigned char >  input)

Definition at line 130 of file strencodings.cpp.

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◆ FormatParagraph()

std::string FormatParagraph ( const std::string &  in,
size_t  width,
size_t  indent 
)

Format a paragraph of text to a fixed width, adding spaces for indentation to any added line.

Definition at line 335 of file strencodings.cpp.

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◆ HexDigit()

signed char HexDigit ( char  c)

Definition at line 55 of file strencodings.cpp.

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◆ HexStr()

std::string HexStr ( const Span< const uint8_t >  s)

Convert a span of bytes to a lower-case hexadecimal string.

Definition at line 516 of file strencodings.cpp.

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◆ IsHex()

bool IsHex ( const std::string &  str)

Definition at line 60 of file strencodings.cpp.

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◆ IsHexNumber()

bool IsHexNumber ( const std::string &  str)

Return true if the string is a hex number, optionally prefixed with "0x".

Definition at line 70 of file strencodings.cpp.

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◆ ParseFixedPoint()

bool ParseFixedPoint ( const std::string &  val,
int  decimals,
int64_t *  amount_out 
)

Parse number as fixed point according to JSON number syntax.

See https://json.org/number.gif

Returns
true on success, false on error.
Note
The result must be in the range (-10^18,10^18), otherwise an overflow error will trigger.

Definition at line 403 of file strencodings.cpp.

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◆ ParseHex() [1/2]

std::vector<unsigned char> ParseHex ( const char *  psz)

Definition at line 83 of file strencodings.cpp.

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◆ ParseHex() [2/2]

std::vector<unsigned char> ParseHex ( const std::string &  str)

Definition at line 104 of file strencodings.cpp.

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◆ ParseInt32()

bool ParseInt32 ( const std::string &  str,
int32_t *  out 
)

Convert string to signed 32-bit integer with strict parse error feedback.

Returns
true if the entire string could be parsed as valid integer, false if not the entire string could be parsed or when overflow or underflow occurred.

Definition at line 305 of file strencodings.cpp.

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◆ ParseInt64()

bool ParseInt64 ( const std::string &  str,
int64_t *  out 
)

Convert string to signed 64-bit integer with strict parse error feedback.

Returns
true if the entire string could be parsed as valid integer, false if not the entire string could be parsed or when overflow or underflow occurred.

Definition at line 310 of file strencodings.cpp.

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◆ ParseUInt16()

bool ParseUInt16 ( const std::string &  str,
uint16_t *  out 
)

Convert decimal string to unsigned 16-bit integer with strict parse error feedback.

Returns
true if the entire string could be parsed as valid integer, false if the entire string could not be parsed or if overflow or underflow occurred.

Definition at line 320 of file strencodings.cpp.

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◆ ParseUInt32()

bool ParseUInt32 ( const std::string &  str,
uint32_t *  out 
)

Convert decimal string to unsigned 32-bit integer with strict parse error feedback.

Returns
true if the entire string could be parsed as valid integer, false if not the entire string could be parsed or when overflow or underflow occurred.

Definition at line 325 of file strencodings.cpp.

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◆ ParseUInt64()

bool ParseUInt64 ( const std::string &  str,
uint64_t *  out 
)

Convert decimal string to unsigned 64-bit integer with strict parse error feedback.

Returns
true if the entire string could be parsed as valid integer, false if not the entire string could be parsed or when overflow or underflow occurred.

Definition at line 330 of file strencodings.cpp.

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◆ ParseUInt8()

bool ParseUInt8 ( const std::string &  str,
uint8_t *  out 
)

Convert decimal string to unsigned 8-bit integer with strict parse error feedback.

Returns
true if the entire string could be parsed as valid integer, false if not the entire string could be parsed or when overflow or underflow occurred.

Definition at line 315 of file strencodings.cpp.

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◆ ProcessMantissaDigit()

static bool ProcessMantissaDigit ( char  ch,
int64_t &  mantissa,
int &  mantissa_tzeros 
)
inlinestatic

Helper function for ParseFixedPoint.

Definition at line 387 of file strencodings.cpp.

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◆ SanitizeString()

std::string SanitizeString ( const std::string &  str,
int  rule = SAFE_CHARS_DEFAULT 
)

Remove unsafe chars.

Safe chars chosen to allow simple messages/URLs/email addresses, but avoid anything even possibly remotely dangerous like & or >

Parameters
[in]strThe string to sanitize
[in]ruleThe set of safe chars to choose (default: least restrictive)
Returns
A new string without unsafe chars

Definition at line 26 of file strencodings.cpp.

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◆ SplitHostPort()

void SplitHostPort ( std::string  in,
uint16_t &  portOut,
std::string &  hostOut 
)

Definition at line 109 of file strencodings.cpp.

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◆ ToLower()

std::string ToLower ( const std::string &  str)

Returns the lowercase equivalent of the given string.

This function is locale independent. It only converts uppercase characters in the standard 7-bit ASCII range. This is a feature, not a limitation.

Parameters
[in]strthe string to convert to lowercase.
Returns
lowercased equivalent of str

Definition at line 495 of file strencodings.cpp.

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◆ ToUpper()

std::string ToUpper ( const std::string &  str)

Returns the uppercase equivalent of the given string.

This function is locale independent. It only converts lowercase characters in the standard 7-bit ASCII range. This is a feature, not a limitation.

Parameters
[in]strthe string to convert to uppercase.
Returns
UPPERCASED EQUIVALENT OF str

Definition at line 502 of file strencodings.cpp.

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Variable Documentation

◆ CHARS_ALPHA_NUM

const std::string CHARS_ALPHA_NUM = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
static

Definition at line 16 of file strencodings.cpp.

◆ p_util_hexdigit

const signed char p_util_hexdigit[256]
Initial value:
=
{ -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
0,1,2,3,4,5,6,7,8,9,-1,-1,-1,-1,-1,-1,
-1,0xa,0xb,0xc,0xd,0xe,0xf,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,0xa,0xb,0xc,0xd,0xe,0xf,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, }

Definition at line 37 of file strencodings.cpp.

◆ SAFE_CHARS

const std::string SAFE_CHARS[]
static
Initial value:
=
{
CHARS_ALPHA_NUM + " .,;-_/:?@()",
CHARS_ALPHA_NUM + " .,;-_?@",
CHARS_ALPHA_NUM + ".-_",
CHARS_ALPHA_NUM + "!*'();:@&=+$,/?#[]-_.~%",
}

Definition at line 18 of file strencodings.cpp.

◆ UPPER_BOUND

const int64_t UPPER_BOUND = 1000000000000000000LL - 1LL
static

Upper bound for mantissa.

10^18-1 is the largest arbitrary decimal that will fit in a signed 64-bit integer. Larger integers cannot consist of arbitrary combinations of 0-9:

999999999999999999 1^18-1 9223372036854775807 (1<<63)-1 (max int64_t) 9999999999999999999 1^19-1 (would overflow)

Definition at line 384 of file strencodings.cpp.

CHARS_ALPHA_NUM
static const std::string CHARS_ALPHA_NUM
Definition: strencodings.cpp:16