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refactor: restore OldChunkStorage file names using custom base36 conversion

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This commit is contained in:
Tropical 2026-04-09 22:59:19 -05:00
parent c4bbf6cf1f
commit d862d05616
1 changed files with 30 additions and 8 deletions
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38
targets/minecraft/world/level/chunk/storage/OldChunkStorage.cpp
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@ -72,6 +72,30 @@ OldChunkStorage::OldChunkStorage(File dir, bool create) {
this->create = create;
}
// https://cplusplus.com/forum/general/144043/
void to_base36(int value, char* buf) {
static const char digits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
char tmp[64];
int i = 0;
unsigned int uval =
(value < 0) ? -(unsigned int)value : (unsigned int)value;
if (uval == 0) {
buf[0] = '0';
buf[1] = '\0';
return;
}
while (uval > 0) {
tmp[i++] = digits[uval % 36];
uval /= 36;
}
if (value < 0) tmp[i++] = '-';
for (int j = 0; j < i; ++j) buf[j] = tmp[i - 1 - j];
buf[i] = '\0';
}
File OldChunkStorage::getFile(int x, int z) {
char name[MAX_PATH_SIZE];
char path1[MAX_PATH_SIZE];
@ -79,15 +103,13 @@ File OldChunkStorage::getFile(int x, int z) {
char xRadix36[64];
char zRadix36[64];
#if defined(__linux__)
assert(0); // need a gcc verison of _itow ?
#else
_itow(x, xRadix36, 36);
_itow(z, zRadix36, 36);
to_base36(x, xRadix36);
to_base36(z, zRadix36);
snprintf(name, MAX_PATH_SIZE, "c.%s.%s.dat", xRadix36, zRadix36);
_itow(x & 63, path1, 36);
_itow(z & 63, path2, 36);
#endif
to_base36(x & 63, path1);
to_base36(z & 63, path2);
// sprintf(file,"%s\\%s",dir,path1);
File file(dir, std::string(path1));
if (!file.exists()) {