From 6bdbb45e88e7b88b294dfb6e4cb493cbc3c8cf74 Mon Sep 17 00:00:00 2001
From: Joshua Haberman <joshua@reverberate.org>
Date: Sun, 13 Feb 2011 12:59:54 -0800
Subject: Merged core/ and stream/ -> src/.  The split wasn't worth it.

---
 src/upb_strstream.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 src/upb_strstream.c

(limited to 'src/upb_strstream.c')

diff --git a/src/upb_strstream.c b/src/upb_strstream.c
new file mode 100644
index 0000000..a7967d4
--- /dev/null
+++ b/src/upb_strstream.c
@@ -0,0 +1,65 @@
+/*
+ * upb - a minimalist implementation of protocol buffers.
+ *
+ * Copyright (c) 2010 Joshua Haberman.  See LICENSE for details.
+ */
+
+#include "upb_strstream.h"
+
+#include <stdlib.h>
+#include "upb_string.h"
+
+static upb_strlen_t upb_stringsrc_read(upb_bytesrc *_src, void *buf,
+                                       upb_strlen_t count, upb_status *status) {
+  upb_stringsrc *src = (upb_stringsrc*)_src;
+  if (src->offset == upb_string_len(src->str)) {
+    status->code = UPB_EOF;
+    return -1;
+  } else {
+    upb_strlen_t to_read = UPB_MIN(count, upb_string_len(src->str) - src->offset);
+    memcpy(buf, upb_string_getrobuf(src->str) + src->offset, to_read);
+    src->offset += to_read;
+    return to_read;
+  }
+}
+
+static bool upb_stringsrc_getstr(upb_bytesrc *_src, upb_string *str,
+                                 upb_status *status) {
+  upb_stringsrc *src = (upb_stringsrc*)_src;
+  if (src->offset == upb_string_len(src->str)) {
+    status->code = UPB_EOF;
+    return false;
+  } else {
+    upb_strlen_t len = upb_string_len(src->str) - src->offset;
+    upb_string_substr(str, src->str, src->offset, len);
+    src->offset += len;
+    assert(src->offset == upb_string_len(src->str));
+    return true;
+  }
+}
+
+void upb_stringsrc_init(upb_stringsrc *s) {
+  static upb_bytesrc_vtbl bytesrc_vtbl = {
+    upb_stringsrc_read,
+    upb_stringsrc_getstr,
+  };
+  s->str = NULL;
+  upb_bytesrc_init(&s->bytesrc, &bytesrc_vtbl);
+}
+
+void upb_stringsrc_reset(upb_stringsrc *s, upb_string *str) {
+  if (str != s->str) {
+    upb_string_unref(s->str);
+    s->str = upb_string_getref(str);
+  }
+  s->offset = 0;
+}
+
+void upb_stringsrc_uninit(upb_stringsrc *s) {
+  upb_string_unref(s->str);
+}
+
+
+upb_bytesrc *upb_stringsrc_bytesrc(upb_stringsrc *s) {
+  return &s->bytesrc;
+}
-- 
cgit v1.2.3