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string cleanup + static format methods

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This commit is contained in:
Noel Berry 2020-12-05 13:50:59 -08:00
parent ed3ffa952a
commit f73973cc6f
2 changed files with 68 additions and 9 deletions
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22
public/blah/containers/str.cpp
View File

@ -357,12 +357,32 @@ Vector<String> Str::split(char ch) const
return result;
}
void Str::replace(char c, char r)
Str& Str::replace(const Str& os, const Str& ns)
{
for (int i = 0; i < m_length - os.m_length + 1; i++)
{
if (strcmp(data() + i, os.data()) == 0)
{
if (ns.m_length > os.m_length)
reserve(ns.m_length - os.m_length);
memcpy(data() + i + os.m_length, data() + i + ns.m_length, m_length - i - os.m_length);
memcpy(data() + i, ns.cstr(), ns.m_length);
set_length(m_length + ns.m_length - os.m_length);
i += os.m_length - 1;
}
}
return *this;
}
Str& Str::replace(char c, char r)
{
char* ptr = data();
for (int n = 0; n < m_length; n++)
if (ptr[n] == c)
ptr[n] = r;
return *this;
}
void Str::clear()

53
public/blah/containers/str.h
View File

@ -1,5 +1,6 @@
#pragma once
#include <inttypes.h>
#include <stdarg.h>
#include <blah/containers/vector.h>
namespace Blah
@ -96,22 +97,25 @@ namespace Blah
Str& trim();
// returns true if the string begins with the given string
bool starts_with(const Str& str, bool ignoreCase = false) const { return starts_with(str.cstr(), ignoreCase); }
bool starts_with(const Str& str, bool ignore_case = false) const { return starts_with(str.cstr(), ignore_case); }
// returns true if the string begins with the given string
bool starts_with(const char* str, bool ignoreCase = false) const;
bool equals(const Str& str, bool ignore_case = false) const { return str.length() == length() && starts_with(str.cstr(), ignore_case); }
// returns true if the string begins with the given string
bool starts_with(const char* str, bool ignore_case = false) const;
// returns true if the string contains with the given string
bool contains(const Str& str, bool ignoreCase = false) const { return contains(str.cstr(), ignoreCase); }
bool contains(const Str& str, bool ignore_case = false) const { return contains(str.cstr(), ignore_case); }
// returns true if the string contains with the given string
bool contains(const char* str, bool ignoreCase = false) const;
bool contains(const char* str, bool ignore_case = false) const;
// returns true if the string ends with the given string
bool ends_with(const Str& str, bool ignoreCase = false) const { return ends_with(str.cstr(), ignoreCase); }
bool ends_with(const Str& str, bool ignore_case = false) const { return ends_with(str.cstr(), ignore_case); }
// returns true if the string ends with the given string
bool ends_with(const char* str, bool ignoreCase = false) const;
bool ends_with(const char* str, bool ignore_case = false) const;
// returns the first index of the given character, or -1 if it isn't found
int first_index_of(char ch) const;
@ -127,8 +131,10 @@ namespace Blah
Vector<String> split(char ch) const;
Str& replace(const Str& old_str, const Str& new_str);
// replaces all occurances of the given character in the string
void replace(char c, char r);
Str& replace(char c, char r);
// checks if the string has a length of 0
bool empty() const { return m_length <= 0; }
@ -169,6 +175,9 @@ namespace Blah
int m_local_size;
};
// combine string
inline Str operator+(const Str& lhs, const Str& rhs) { Str str; str.append(lhs).append(rhs); return str; }
template<int T>
class StrOf : public Str
{
@ -185,5 +194,35 @@ namespace Blah
StrOf& operator=(const char* rhs) { set(rhs); return *this; }
StrOf& operator=(const Str& rhs) { set(rhs); return *this; }
StrOf& operator=(const StrOf& rhs) { set(rhs); return *this; }
// creates a string from the format
static StrOf fmt(const char* str, ...);
};
template<int T>
StrOf<T> StrOf<T>::fmt(const char* fmt, ...)
{
StrOf<T> str;
int add, diff;
// determine arg length
va_list args;
va_start(args, fmt);
add = vsnprintf(NULL, 0, fmt, args);
va_end(args);
// reserve
auto len = str.length();
str.set_length(len + add);
diff = str.capacity() - len;
if (diff <= 0) diff = 0;
// print out
va_start(args, fmt);
vsnprintf(str.cstr() + len, (size_t)diff, fmt, args);
va_end(args);
return str;
}
}