1 files changed, 39 insertions, 0 deletions
diff --git a/src/base/string/split.c b/src/base/string/split.c
new file mode 100644
index 0000000..2aa68b4
--- /dev/null
+++ b/src/base/string/split.c
@@ -0,0 +1,39 @@
+#include "internal.h"
+
+// split will split the string by the given token.
+// returns a stretchy buffer of strings that result from the partition.
+// it is the caller's responsibility to clean the memory.
+string*
+str·split(string s, const byte* tok)
+{
+    string* fields = nil;
+    vlong start  = 0;
+
+    vlong sL   = str·len(s);
+    vlong tokL = strlen(tok);
+    if (sL == 0 || tokL == 0) return nil;
+
+    buffit(fields, 5);
+
+    for (vlong i = 0; i < sL - tokL; i++) {
+        if ((tokL == 1 && s[i] == tokL) || !memcmp(s + i, tok, tokL)) {
+            bufpush(fields, str·makelen(s + start, i - start));
+            if (fields[buflen(fields) - 1] == nil) goto cleanup;
+
+            start = i + tokL;
+            i += tokL - 1;
+        }
+    }
+
+    bufpush(fields, str·makelen(s + start, sL - start));
+
+    return fields;
+
+cleanup:
+    for (vlong i = 0; i < buflen(fields); i++) {
+        str·free(fields[i]);
+    }
+    buffree(fields);
+    return nil;
+}
+