1 files changed, 35 insertions, 0 deletions
diff --git a/src/relooper/ministring.h b/src/relooper/ministring.h
new file mode 100644
index 00000000..d0f042c8
--- /dev/null
+++ b/src/relooper/ministring.h
@@ -0,0 +1,35 @@
+
+// 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;
+  }
+};
+