Bitcoin Core  0.20.99
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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 <errno.h>
#include <limits>
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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, int &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)
 
static NODISCARD bool ParsePrechecks (const std::string &str)
 
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 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...
 
bool ParseDouble (const std::string &str, double *out)
 Convert string to double 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...
 
int64_t atoi64 (const std::string &str)
 
int atoi (const std::string &str)
 
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

◆ atoi()

int atoi ( const std::string &  str)

Definition at line 435 of file strencodings.cpp.

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◆ atoi64()

int64_t atoi64 ( const std::string &  str)

Definition at line 426 of file strencodings.cpp.

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◆ 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 573 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 224 of file strencodings.cpp.

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◆ DecodeBase32() [2/2]

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

Definition at line 271 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 145 of file strencodings.cpp.

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◆ DecodeBase64() [2/2]

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

Definition at line 192 of file strencodings.cpp.

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◆ EncodeBase32() [1/2]

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 204 of file strencodings.cpp.

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◆ EncodeBase32() [2/2]

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 219 of file strencodings.cpp.

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◆ EncodeBase64() [1/2]

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

Definition at line 129 of file strencodings.cpp.

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◆ EncodeBase64() [2/2]

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

Definition at line 140 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 385 of file strencodings.cpp.

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◆ HexDigit()

signed char HexDigit ( char  c)

Definition at line 56 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 580 of file strencodings.cpp.

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◆ IsHex()

bool IsHex ( const std::string &  str)

Definition at line 61 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 71 of file strencodings.cpp.

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◆ ParseDouble()

bool ParseDouble ( const std::string &  str,
double *  out 
)

Convert string to double with strict parse error feedback.

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

Definition at line 371 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 http://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 467 of file strencodings.cpp.

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◆ ParseHex() [1/2]

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

Definition at line 84 of file strencodings.cpp.

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◆ ParseHex() [2/2]

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

Definition at line 105 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 294 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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◆ ParsePrechecks()

static NODISCARD bool ParsePrechecks ( const std::string &  str)
static

Definition at line 283 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 337 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 354 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 325 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 451 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 27 of file strencodings.cpp.

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◆ SplitHostPort()

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

Definition at line 110 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 559 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 566 of file strencodings.cpp.

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Variable Documentation

◆ CHARS_ALPHA_NUM

const std::string CHARS_ALPHA_NUM = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
static

Definition at line 17 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 38 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 + "!*'();:@&=+$,/?#[]-_.~%",
}
static const std::string CHARS_ALPHA_NUM

Definition at line 19 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 448 of file strencodings.cpp.