1 files changed, 30 insertions, 0 deletions
diff --git a/strduptab.c b/strduptab.c
new file mode 100644
index 0000000..07dd244
--- /dev/null
+++ b/strduptab.c
@@ -0,0 +1,30 @@
+#include <stdlib.h>
+#include "str.h"
+#include "strduptab.h"
+#include "strstorage.h"
+#include "str.h"
+
+#define PAGESIZE 4096
+
+const char* strduptab_add(struct stringduptable* t,const char* s) {
+  size_t i;
+  for (i=0; i<t->n; ++i)
+    if (str_equal(t->s[i],s))
+      return t->s[i];
+  if (t->n>=t->a) {
+    const char** x;
+    int a=t->a*2;
+    if (!a) a=1024;
+    if (!(x=realloc((char**)t->s,a*sizeof(char*))))
+      return 0;
+    t->a=a;
+    t->s=x;
+  }
+  {
+    const char* x=strstorage_add(s,str_len(s)+1);
+    if (!x) return 0;
+    s=x;
+  }
+  t->s[t->n]=s; ++t->n;
+  return s;
+}