1 files changed, 49 insertions, 0 deletions
diff --git a/include/stralloc.h b/include/stralloc.h
new file mode 100644
index 0000000..0f4a7d2
--- /dev/null
+++ b/include/stralloc.h
@@ -0,0 +1,49 @@
+#ifndef STRALLOC_H
+#define STRALLOC_H
+
+/*
+ *  Revision 20210307, Erwin Hoffmann
+ *  - 
+*/
+
+#include <sys/types.h>
+
+/* stralloc is the internal data structure all functions are working on.
+ * s is the string.
+ * len is the used length of the string.
+ * a is the allocated length of the string.
+ */
+
+typedef struct stralloc {
+  char* s;
+  size_t len;
+  size_t a;
+} stralloc;
+
+//extern int stralloc_ready(stralloc *,unsigned int);
+extern int stralloc_ready(stralloc *sa,size_t len);
+//extern int stralloc_readyplus(stralloc *,unsigned int);
+extern int stralloc_readyplus(stralloc *sa,size_t len);
+extern int stralloc_copy(stralloc *,stralloc *);
+extern int stralloc_cat(stralloc *,stralloc *);
+extern int stralloc_copys(stralloc *,const char *);
+extern int stralloc_cats(stralloc *,const char *);
+extern int stralloc_copyb(stralloc *,const char *,unsigned int);
+extern int stralloc_catb(stralloc *,const char *,unsigned int);
+//extern int stralloc_append(stralloc *,char *); /* beware: this takes a pointer to 1 char */
+extern int stralloc_append(stralloc *sa,const char *in); /* beware: this takes a pointer to 1 char */
+extern int stralloc_starts(stralloc *,const char *);
+
+#define stralloc_0(sa) stralloc_append(sa,"")
+
+extern int stralloc_catulong0(stralloc *,unsigned long,unsigned int);
+extern int stralloc_catlong0(stralloc *,long,unsigned int);
+
+extern void stralloc_free(stralloc *);
+
+#define stralloc_catlong(sa,l) (stralloc_catlong0((sa),(l),0))
+#define stralloc_catuint0(sa,i,n) (stralloc_catulong0((sa),(i),(n)))
+#define stralloc_catint0(sa,i,n) (stralloc_catlong0((sa),(i),(n)))
+#define stralloc_catint(sa,i) (stralloc_catlong0((sa),(i),0))
+
+#endif