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// Tiny implementation of strings. Avoids linking in all of std::string
#include <stdlib.h>
#include <string.h>
class ministring {
int used;
char *buffer;
int bufferSize;
public:
ministring() : used(0), buffer(NULL), bufferSize(0) {}
~ministring() { if (buffer) free(buffer); }
char *c_str() { return buffer; }
int size() { return used; }
void clear() {
used = 0; // keep the buffer alive as an optimization, just resize
}
ministring& operator+=(const char *s) {
int len = strlen(s);
if (used + len + 2 > bufferSize) {
// try to avoid frequent reallocations
bufferSize = 2*(bufferSize + len);
bufferSize += 1024 - bufferSize % 1024;
buffer = (char*)(buffer ? realloc(buffer, bufferSize) : malloc(bufferSize));
}
strcpy(buffer + used, s);
used += len;
return *this;
}
};
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