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#ifndef GROWBUF_H
#define GROWBUF_H
#include <stdlib.h>
#include <string.h>
class GrowBuf
{
public:
GrowBuf() : str(0), pos(0), len(0) {}
~GrowBuf() { free(str); str=0; pos=0; len=0; }
void clear() { pos=0; }
void addChar(char c) { if (pos>=len) { len+=1024; str = (char*)realloc(str,len); }
str[pos++]=c;
}
void addStr(const char *s) {
int l=strlen(s);
if (pos+l>=len) { len+=l+1024; str = (char*)realloc(str,len); }
strcpy(&str[pos],s);
pos+=l;
}
void addStr(const char *s,int n) {
int l=strlen(s);
if (n<l) l=n;
if (pos+l>=len) { len+=l+1024; str = (char*)realloc(str,len); }
strncpy(&str[pos],s,n);
pos+=l;
}
const char *get() { return str; }
int getPos() const { return pos; }
char at(int i) const { return str[i]; }
private:
char *str;
int pos;
int len;
};
#endif
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