1 files changed, 41 insertions, 0 deletions
diff --git a/extract/src/astring.c b/extract/src/astring.c
new file mode 100644
index 00000000..1d273c9e
--- /dev/null
+++ b/extract/src/astring.c
@@ -0,0 +1,41 @@
+#include "../include/extract_alloc.h"
+
+#include "astring.h"
+#include "memento.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+
+void extract_astring_init(extract_astring_t* string)
+{
+    string->chars = NULL;
+    string->chars_num = 0;
+}
+
+void extract_astring_free(extract_alloc_t* alloc, extract_astring_t* string)
+{
+    extract_free(alloc, &string->chars);
+    extract_astring_init(string);
+}
+
+
+int extract_astring_catl(extract_alloc_t* alloc, extract_astring_t* string, const char* s, size_t s_len)
+{
+    if (extract_realloc2(alloc, &string->chars, string->chars_num+1, string->chars_num + s_len + 1)) return -1;
+    memcpy(string->chars + string->chars_num, s, s_len);
+    string->chars[string->chars_num + s_len] = 0;
+    string->chars_num += s_len;
+    return 0;
+}
+
+int extract_astring_catc(extract_alloc_t* alloc, extract_astring_t* string, char c)
+{
+    return extract_astring_catl(alloc, string, &c, 1);
+}
+
+int extract_astring_cat(extract_alloc_t* alloc, extract_astring_t* string, const char* s)
+{
+    return extract_astring_catl(alloc, string, s, strlen(s));
+}
+