tri11paragon
/
BLT
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

CONSTEXPR c++20 string functions

v1
Brett 2023-10-25 14:30:24 -04:00
parent 96af65a675
commit fcceff189b
1 changed files with 27 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
include/blt/std/string.h
View File

@ -14,6 +14,10 @@
#include <vector> #include <vector>
#include <cctype> #include <cctype>
#if __cplusplus >= 202002L
#define BLT_CPP20_CONSTEXPR constexpr
#endif
namespace blt::string namespace blt::string
{ {
@ -60,7 +64,7 @@ namespace blt::string
} }
}; };
static inline bool starts_with(const std::string& string, const std::string& search) static inline BLT_CPP20_CONSTEXPR bool starts_with(const std::string& string, const std::string& search)
{ {
if (search.length() > string.length()) if (search.length() > string.length())
return false; return false;
@ -74,7 +78,7 @@ namespace blt::string
return true; return true;
} }
static inline bool ends_with(const std::string& string, const std::string& search) static inline BLT_CPP20_CONSTEXPR bool ends_with(const std::string& string, const std::string& search)
{ {
if (search.length() > string.length()) if (search.length() > string.length())
return false; return false;
@ -89,14 +93,14 @@ namespace blt::string
return true; return true;
} }
static inline bool contains(const std::string& string, const char search) static inline BLT_CPP20_CONSTEXPR bool contains(const std::string& string, const char search)
{ {
return std::ranges::any_of(string, [search](const char c) -> bool { return std::ranges::any_of(string, [search](const char c) -> bool {
return c == search; return c == search;
}); });
} }
static inline bool contains(const std::string& string, const std::string& search) static inline BLT_CPP20_CONSTEXPR bool contains(const std::string& string, const std::string& search)
{ {
if (search.length() > string.length()) if (search.length() > string.length())
return false; return false;
@ -127,15 +131,15 @@ namespace blt::string
* @param s string to lower case * @param s string to lower case
* @return a string copy that is all lower case * @return a string copy that is all lower case
*/ */
static inline std::string toLowerCase(const std::string& s) static inline BLT_CPP20_CONSTEXPR std::string toLowerCase(const std::string& s)
{ {
std::stringstream str; std::string str;
std::for_each( std::for_each(
s.begin(), s.end(), [&str](unsigned char ch) { s.begin(), s.end(), [&str](unsigned char ch) {
str << (char) std::tolower(ch); str += (char) std::tolower(ch);
} }
); );
return str.str(); return str;
} }
/** /**
@ -143,20 +147,20 @@ namespace blt::string
* @param s string to upper case * @param s string to upper case
* @return a string copy that is all upper case * @return a string copy that is all upper case
*/ */
static inline std::string toUpperCase(const std::string& s) static inline BLT_CPP20_CONSTEXPR std::string toUpperCase(const std::string& s)
{ {
std::stringstream str; std::string str;
std::for_each( std::for_each(
s.begin(), s.end(), [&str](unsigned char ch) { s.begin(), s.end(), [&str](unsigned char ch) {
str << (char) std::toupper(ch); str += (char) std::toupper(ch);
} }
); );
return str.str(); return str;
} }
// taken from https://stackoverflow.com/questions/14265581/parse-split-a-string-in-c-using-string-delimiter-standard-c // taken from https://stackoverflow.com/questions/14265581/parse-split-a-string-in-c-using-string-delimiter-standard-c
// extended to return a vector // extended to return a vector
static inline std::vector<std::string> split(std::string s, const std::string& delim) static inline BLT_CPP20_CONSTEXPR std::vector<std::string> split(std::string s, const std::string& delim)
{ {
size_t pos = 0; size_t pos = 0;
std::vector<std::string> tokens; std::vector<std::string> tokens;
@ -170,7 +174,7 @@ namespace blt::string
return tokens; return tokens;
} }
static inline std::vector<std::string> split(std::string s, char delim) static inline BLT_CPP20_CONSTEXPR std::vector<std::string> split(std::string s, char delim)
{ {
size_t pos = 0; size_t pos = 0;
std::vector<std::string> tokens; std::vector<std::string> tokens;
@ -185,7 +189,7 @@ namespace blt::string
} }
// https://stackoverflow.com/questions/3418231/replace-part-of-a-string-with-another-string // https://stackoverflow.com/questions/3418231/replace-part-of-a-string-with-another-string
static inline bool replace(std::string& str, const std::string& from, const std::string& to) static inline BLT_CPP20_CONSTEXPR bool replace(std::string& str, const std::string& from, const std::string& to)
{ {
size_t start_pos = str.find(from); size_t start_pos = str.find(from);
if (start_pos == std::string::npos) if (start_pos == std::string::npos)
@ -194,7 +198,7 @@ namespace blt::string
return true; return true;
} }
static inline void replaceAll(std::string& str, const std::string& from, const std::string& to) static inline BLT_CPP20_CONSTEXPR void replaceAll(std::string& str, const std::string& from, const std::string& to)
{ {
if (from.empty()) if (from.empty())
return; return;
@ -210,7 +214,7 @@ namespace blt::string
// taken from https://stackoverflow.com/questions/216823/how-to-trim-an-stdstring // taken from https://stackoverflow.com/questions/216823/how-to-trim-an-stdstring
// would've preferred to use boost lib but instructions said to avoid external libs // would've preferred to use boost lib but instructions said to avoid external libs
// trim from start (in place) // trim from start (in place)
static inline std::string& ltrim(std::string& s) static inline BLT_CPP20_CONSTEXPR std::string& ltrim(std::string& s)
{ {
s.erase( s.erase(
s.begin(), std::find_if( s.begin(), std::find_if(
@ -222,7 +226,7 @@ namespace blt::string
} }
// trim from end (in place) // trim from end (in place)
static inline std::string& rtrim(std::string& s) static inline BLT_CPP20_CONSTEXPR std::string& rtrim(std::string& s)
{ {
s.erase( s.erase(
std::find_if( std::find_if(
@ -234,7 +238,7 @@ namespace blt::string
} }
// trim from both ends (in place) // trim from both ends (in place)
static inline std::string& trim(std::string& s) static inline BLT_CPP20_CONSTEXPR std::string& trim(std::string& s)
{ {
ltrim(s); ltrim(s);
rtrim(s); rtrim(s);
@ -242,27 +246,27 @@ namespace blt::string
} }
// trim from start (copying) // trim from start (copying)
static inline std::string ltrim_copy(std::string s) static inline BLT_CPP20_CONSTEXPR std::string ltrim_copy(std::string s)
{ {
ltrim(s); ltrim(s);
return s; return s;
} }
// trim from end (copying) // trim from end (copying)
static inline std::string rtrim_copy(std::string s) static inline BLT_CPP20_CONSTEXPR std::string rtrim_copy(std::string s)
{ {
rtrim(s); rtrim(s);
return s; return s;
} }
// trim from both ends (copying) // trim from both ends (copying)
static inline std::string trim_copy(std::string s) static inline BLT_CPP20_CONSTEXPR std::string trim_copy(std::string s)
{ {
trim(s); trim(s);
return s; return s;
} }
static inline bool is_numeric(const std::string& s) static inline BLT_CPP20_CONSTEXPR bool is_numeric(const std::string& s)
{ {
return std::ranges::all_of(s, [](char c) -> bool { return std::ranges::all_of(s, [](char c) -> bool {
return std::isdigit(c); return std::isdigit(c);