1 files changed, 38 insertions, 0 deletions
diff --git a/src/growbuf.h b/src/growbuf.h
new file mode 100644
index 0000000..6798692
--- /dev/null
+++ b/src/growbuf.h
@@ -0,0 +1,38 @@
+#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