mirror of https://gitlab.com/rnger/amath
358 lines
7.0 KiB
C++
358 lines
7.0 KiB
C++
/*-
|
|
* Copyright (c) 2014-2021 Carsten Sonne Larsen <cs@innolan.net>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* Project homepage:
|
|
* https://amath.innolan.net
|
|
*
|
|
*/
|
|
|
|
#include "amath.h"
|
|
#include "amathc.h"
|
|
#include "charbuf.h"
|
|
|
|
/**
|
|
* @brief Initialize without allocating memory.
|
|
*
|
|
*/
|
|
CharBuffer::CharBuffer()
|
|
{
|
|
buf = nullptr;
|
|
ptr = buf;
|
|
cursize = 0;
|
|
}
|
|
|
|
/**
|
|
* @brief Initialize while allocating specified amount of memory.
|
|
*
|
|
*/
|
|
CharBuffer::CharBuffer(unsigned int size)
|
|
{
|
|
cursize = (size < minimumSize ? minimumSize : size);
|
|
buf = new char[cursize];
|
|
ptr = buf;
|
|
}
|
|
|
|
CharBuffer::~CharBuffer()
|
|
{
|
|
ClearBuffer();
|
|
}
|
|
|
|
/**
|
|
* @brief Release memory in buffer.
|
|
*
|
|
*/
|
|
void CharBuffer::ClearBuffer()
|
|
{
|
|
if (buf != nullptr)
|
|
{
|
|
delete[] buf;
|
|
}
|
|
|
|
buf = nullptr;
|
|
ptr = buf;
|
|
cursize = 0;
|
|
}
|
|
|
|
/**
|
|
* @brief Release memory, allocate and copy source.
|
|
*
|
|
*/
|
|
void CharBuffer::ClearAndCopy(const char *source)
|
|
{
|
|
ClearBuffer();
|
|
cursize = AllocAndCopy(&buf, source);
|
|
ptr = buf + cursize - sizeof(char);
|
|
}
|
|
|
|
/**
|
|
* @brief Release memory and allocate new size.
|
|
*
|
|
*/
|
|
void CharBuffer::ClearAndAlloc(unsigned int size)
|
|
{
|
|
ClearBuffer();
|
|
cursize = (size < minimumSize ? minimumSize : size);
|
|
buf = new char[cursize];
|
|
ptr = buf;
|
|
}
|
|
|
|
void CharBuffer::EnsureMinimumSize()
|
|
{
|
|
if (buf == nullptr)
|
|
{
|
|
unsigned int size = minimumSize;
|
|
buf = new char[size];
|
|
ptr = buf;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Ensure a memory block of specified size is allocated.
|
|
*
|
|
*/
|
|
void CharBuffer::EnsureSize(unsigned int size)
|
|
{
|
|
if (cursize < size)
|
|
{
|
|
unsigned int tempsize = cursize;
|
|
cursize = (size < minimumSize ? minimumSize : size);
|
|
|
|
if (buf == nullptr)
|
|
{ // Nothing allocated yet. Just allocate requested size.
|
|
buf = new char[cursize];
|
|
ptr = buf;
|
|
}
|
|
else if (buf == ptr)
|
|
{ // Already allocated but buffer is empty.
|
|
delete[] buf;
|
|
buf = new char[cursize];
|
|
ptr = buf;
|
|
}
|
|
else
|
|
{ // Buffer already in use.
|
|
// Make at least double size
|
|
cursize = cursize < tempsize * 2 ? tempsize * 2 : cursize;
|
|
unsigned int offset = (unsigned int)(ptr - buf);
|
|
char *temp = new char[cursize];
|
|
MemCopy(temp, buf, tempsize);
|
|
delete[] buf;
|
|
buf = temp;
|
|
ptr = buf + offset;
|
|
}
|
|
}
|
|
}
|
|
|
|
void CharBuffer::EnsureSize(unsigned int blocksize, unsigned int blocks)
|
|
{
|
|
if (cursize < blocksize * blocks)
|
|
{
|
|
if (buf == nullptr)
|
|
{
|
|
cursize = blocksize * blocks;
|
|
buf = new char[cursize];
|
|
ptr = buf;
|
|
}
|
|
else
|
|
{
|
|
unsigned int tptr = (unsigned int)(ptr - buf);
|
|
char *temp = new char[blocksize * blocks];
|
|
MemCopy(temp, buf, cursize);
|
|
delete[] buf;
|
|
cursize = blocksize * blocks;
|
|
buf = temp;
|
|
ptr = buf + tptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
void CharBuffer::EnsureGrowth(unsigned int size)
|
|
{
|
|
EnsureSize((unsigned int)((ptr - buf) + size));
|
|
}
|
|
|
|
bool CharBuffer::IsEmpty() const
|
|
{
|
|
char *i = buf;
|
|
|
|
if (i == nullptr || buf == ptr)
|
|
return true;
|
|
|
|
do
|
|
{
|
|
// Blank space characters
|
|
if (*i != ' ' && *i != '\t' && *i != '\r' && *i != '\n')
|
|
return false;
|
|
|
|
i++;
|
|
} while (i != ptr);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool CharBuffer::Is(const char *string) const
|
|
{
|
|
return StrIsEqual(GetString(), string);
|
|
}
|
|
|
|
bool CharBuffer::Contains(const char c) const
|
|
{
|
|
char *i = buf;
|
|
|
|
if (i == nullptr || buf == ptr)
|
|
return false;
|
|
|
|
do
|
|
{
|
|
if (*i == c)
|
|
return true;
|
|
|
|
i++;
|
|
} while (i != ptr);
|
|
|
|
return false;
|
|
}
|
|
|
|
void CharBuffer::Empty()
|
|
{
|
|
if (buf == nullptr)
|
|
{
|
|
EnsureMinimumSize();
|
|
}
|
|
|
|
ptr = buf;
|
|
}
|
|
|
|
void CharBuffer::DeleteLastChar()
|
|
{
|
|
ptr--;
|
|
}
|
|
|
|
void CharBuffer::Copy(CharBuffer *source)
|
|
{
|
|
EnsureSize(source->cursize);
|
|
const char *s = source->GetString();
|
|
|
|
ptr = buf;
|
|
// ReSharper disable once CppPossiblyErroneousEmptyStatements
|
|
while ((*ptr++ = *s++))
|
|
;
|
|
|
|
ptr--;
|
|
}
|
|
|
|
void CharBuffer::Append(const char c)
|
|
{
|
|
*ptr++ = c;
|
|
}
|
|
|
|
void CharBuffer::Append(const char c, unsigned int count)
|
|
{
|
|
if (count == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
unsigned int n = count;
|
|
while (n--)
|
|
*ptr++ = c;
|
|
}
|
|
|
|
void CharBuffer::Append(const char *source)
|
|
{
|
|
// ReSharper disable once CppPossiblyErroneousEmptyStatements
|
|
while ((*ptr++ = *source++))
|
|
;
|
|
|
|
ptr--;
|
|
}
|
|
|
|
void CharBuffer::AppendNumber(signed long value)
|
|
{
|
|
static const char *alphaNumerics = "0123456789";
|
|
unsigned int count = 0;
|
|
unsigned long current = value;
|
|
char chars[12];
|
|
char *p = chars;
|
|
bool negative = false;
|
|
|
|
if (value < 0)
|
|
{
|
|
current = -value;
|
|
negative = true;
|
|
}
|
|
|
|
do
|
|
{
|
|
unsigned long remainder = current % 10;
|
|
*p++ = alphaNumerics[remainder];
|
|
current /= 10;
|
|
count++;
|
|
} while (current >= 1);
|
|
|
|
p--;
|
|
|
|
if (negative)
|
|
{
|
|
*ptr++ = '-';
|
|
}
|
|
|
|
while (count-- != 0)
|
|
*ptr++ = *p--;
|
|
}
|
|
|
|
bool CharBuffer::RemoveTrailing(const char c)
|
|
{
|
|
if (ptr == buf)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (*(--ptr) == c)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
ptr++;
|
|
return false;
|
|
}
|
|
|
|
bool CharBuffer::RemoveTrailing(const char *string)
|
|
{
|
|
int len = StrLen(string) * sizeof(char);
|
|
char *s = ptr - len;
|
|
if (s < buf)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
*ptr = '\0';
|
|
|
|
if (StrIsEqual(s, string))
|
|
{
|
|
ptr = s;
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
char *CharBuffer::GetString() const
|
|
{
|
|
*ptr = '\0';
|
|
return buf;
|
|
}
|
|
|
|
void CharBuffer::CopyTo(char *string)
|
|
{
|
|
char *q = buf;
|
|
char *p = string;
|
|
|
|
*ptr = '\0';
|
|
|
|
while ((*p++ = *q++))
|
|
;
|
|
|
|
*p = '\0';
|
|
}
|