refactoring: split strlist.h classes into separate {h,cpp} files

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@3694 212acab6-be3b-0410-9dea-997c60f758d6

Source/growbuf.h

@@ -0,0 +1,46 @@
+#ifndef __GROWBUF_H_
+#define __GROWBUF_H_
+
+class IGrowBuf
+{
+  public:
+    virtual ~IGrowBuf() {}
+    virtual int add(const void *data, int len)=0;
+    virtual void resize(int newlen)=0;
+    virtual int getlen() const=0;
+    virtual void *get() const=0;
+};
+
+class GrowBuf : public IGrowBuf
+{
+  private: // don't copy instances
+    GrowBuf(const GrowBuf&);
+    void operator=(const GrowBuf&);
+
+  public:
+    GrowBuf();
+    virtual ~GrowBuf();
+
+    void set_zeroing(int zero);
+    int add(const void *data, int len);
+    void resize(int newlen);
+    int getlen() const;
+    void *get() const;
+
+  private:
+    void *m_s;
+    int m_alloc;
+    int m_used;
+    int m_zero;
+
+  protected:
+    int m_bs;
+};
+
+class TinyGrowBuf : public GrowBuf {
+  public:
+    TinyGrowBuf() : GrowBuf() { m_bs=1024; }
+};
+
+#endif
+