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VVVVVV/desktop_version/src/UtilityClass.cpp
Misa 5d4c1b7e9d Refactor endsWith() to not use the STL
There's not really any reason for this function to use heap-allocated
strings. So I've refactored it to not do that.

I would've used SDL_strrstr(), if it existed. It does not appear to
exist. But that's okay.
2021-02-27 01:40:05 -05:00

337 lines
5.6 KiB
C++

#define HELP_DEFINITION
#include "UtilityClass.h"
#include <SDL.h>
#include <sstream>
#include "Maths.h"
static const char* GCChar(const SDL_GameControllerButton button)
{
switch (button)
{
case SDL_CONTROLLER_BUTTON_A:
return "A";
case SDL_CONTROLLER_BUTTON_B:
return "B";
case SDL_CONTROLLER_BUTTON_X:
return "X";
case SDL_CONTROLLER_BUTTON_Y:
return "Y";
case SDL_CONTROLLER_BUTTON_BACK:
return "BACK";
case SDL_CONTROLLER_BUTTON_GUIDE:
return "GUIDE";
case SDL_CONTROLLER_BUTTON_START:
return "START";
case SDL_CONTROLLER_BUTTON_LEFTSTICK:
return "L3";
case SDL_CONTROLLER_BUTTON_RIGHTSTICK:
return "R3";
case SDL_CONTROLLER_BUTTON_LEFTSHOULDER:
return "LB";
case SDL_CONTROLLER_BUTTON_RIGHTSHOULDER:
return "RB";
default:
SDL_assert(0 && "Unhandled button!");
return NULL;
}
}
int ss_toi(const std::string& str)
{
int retval = 0;
bool negative = false;
static const int radix = 10;
for (size_t i = 0; i < str.size(); ++i)
{
const char chr = str[i];
if (i == 0 && chr == '-')
{
negative = true;
continue;
}
if (SDL_isdigit(chr))
{
retval *= radix;
retval += chr - '0';
}
else
{
break;
}
}
if (negative)
{
return -retval;
}
return retval;
}
bool next_split(
size_t* start,
size_t* len,
const char* str,
const char delim
) {
size_t idx = 0;
*len = 0;
if (str[idx] == '\0')
{
return false;
}
while (true)
{
if (str[idx] == delim)
{
*start += 1;
return true;
}
else if (str[idx] == '\0')
{
return true;
}
idx += 1;
*start += 1;
*len += 1;
}
}
bool next_split_s(
char buffer[],
const size_t buffer_size,
size_t* start,
const char* str,
const char delim
) {
size_t len = 0;
const size_t prev_start = *start;
const bool retval = next_split(start, &len, &str[*start], delim);
if (retval)
{
/* Using SDL_strlcpy() here results in calling SDL_strlen() */
/* on the whole string, which results in a visible freeze */
/* if it's a very large string */
const size_t length = VVV_min(buffer_size - 1, len);
SDL_memcpy(buffer, &str[prev_start], length);
buffer[length] = '\0';
}
return retval;
}
UtilityClass::UtilityClass(void) :
glow(0),
glowdir(0)
{
for (size_t i = 0; i < SDL_arraysize(splitseconds); i++)
{
splitseconds[i] = (i * 100) / 30;
}
slowsine = 0;
}
std::string UtilityClass::String( int _v )
{
std::ostringstream os;
os << _v;
return(os.str());
}
int UtilityClass::Int(const char* str, int fallback /*= 0*/)
{
if (!is_number(str))
{
return fallback;
}
return (int) SDL_strtol(str, NULL, 0);
}
std::string UtilityClass::GCString(const std::vector<SDL_GameControllerButton>& buttons)
{
std::string retval = "";
for (size_t i = 0; i < buttons.size(); i += 1)
{
retval += GCChar(buttons[i]);
if ((i + 1) < buttons.size())
{
retval += ",";
}
}
return retval;
}
std::string UtilityClass::twodigits( int t )
{
if (t < 10)
{
return "0" + String(t);
}
if (t >= 100)
{
return "??";
}
return String(t);
}
std::string UtilityClass::timestring( int t )
{
//given a time t in frames, return a time in seconds
std::string tempstring = "";
int temp = (t - (t % 30)) / 30;
if (temp < 60) //less than one minute
{
t = t % 30;
tempstring = String(temp) + ":" + twodigits(splitseconds[t]);
}
else
{
int temp2 = (temp - (temp % 60)) / 60;
temp = temp % 60;
t = t % 30;
tempstring = String(temp2) + ":" + twodigits(temp) + ":" + twodigits(splitseconds[t]);
}
return tempstring;
}
std::string UtilityClass::number( int _t )
{
static const std::string ones_place[] = {"One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"};
static const std::string tens_place[] = {"Ten", "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety"};
static const std::string teens[] = {"Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen"};
if (_t < 0)
{
return "???";
}
else if (_t > 100)
{
return "Lots";
}
else if (_t == 0)
{
return "Zero";
}
else if (_t == 100)
{
return "One Hundred";
}
else if (_t >= 1 && _t <= 9)
{
return ones_place[_t-1];
}
else if (_t >= 11 && _t <= 19)
{
return teens[_t-11];
}
else if (_t % 10 == 0)
{
return tens_place[(_t/10)-1];
}
else
{
return tens_place[(_t/10)-1] + " " + ones_place[(_t%10)-1];
}
}
bool UtilityClass::intersects( SDL_Rect A, SDL_Rect B )
{
return (SDL_HasIntersection(&A, &B) == SDL_TRUE);
}
void UtilityClass::updateglow(void)
{
slowsine++;
if (slowsine >= 64) slowsine = 0;
if (glowdir == 0) {
glow+=2;
if (glow >= 62) glowdir = 1;
}else {
glow-=2;
if (glow < 2) glowdir = 0;
}
}
bool is_number(const char* str)
{
if (!SDL_isdigit(str[0]) && str[0] != '-')
{
return false;
}
if (str[0] == '-' && str[1] == '\0')
{
return false;
}
for (size_t i = 1; str[i] != '\0'; ++i)
{
if (!SDL_isdigit(str[i]))
{
return false;
}
}
return true;
}
static bool VVV_isxdigit(const unsigned char digit)
{
return (digit >= 'a' && digit <= 'f')
|| (digit >= 'A' && digit <= 'F')
|| SDL_isdigit(digit);
}
bool is_positive_num(const char* str, const bool hex)
{
if (str[0] == '\0')
{
return false;
}
for (size_t i = 0; str[i] != '\0'; ++i)
{
if (hex)
{
if (!VVV_isxdigit(str[i]))
{
return false;
}
}
else
{
if (!SDL_isdigit(str[i]))
{
return false;
}
}
}
return true;
}
bool endsWith(const char* str, const char* suffix)
{
const size_t str_size = SDL_strlen(str);
const size_t suffix_size = SDL_strlen(suffix);
if (str_size < suffix_size)
{
return false;
}
return SDL_strcmp(&str[str_size - suffix_size], suffix) == 0;
}