1 files changed, 68 insertions, 0 deletions
diff --git a/notes.c b/notes.c
new file mode 100644
index 0000000000..91ec77f3f0
--- /dev/null
+++ b/notes.c
@@ -0,0 +1,68 @@
+#include "cache.h"
+#include "commit.h"
+#include "notes.h"
+#include "refs.h"
+#include "utf8.h"
+#include "strbuf.h"
+
+static int initialized;
+
+void get_commit_notes(const struct commit *commit, struct strbuf *sb,
+		const char *output_encoding)
+{
+	static const char *utf8 = "utf-8";
+	struct strbuf name = STRBUF_INIT;
+	const char *hex;
+	unsigned char sha1[20];
+	char *msg;
+	unsigned long msgoffset, msglen;
+	enum object_type type;
+
+	if (!initialized) {
+		const char *env = getenv(GIT_NOTES_REF_ENVIRONMENT);
+		if (env)
+			notes_ref_name = getenv(GIT_NOTES_REF_ENVIRONMENT);
+		else if (!notes_ref_name)
+			notes_ref_name = GIT_NOTES_DEFAULT_REF;
+		if (notes_ref_name && read_ref(notes_ref_name, sha1))
+			notes_ref_name = NULL;
+		initialized = 1;
+	}
+
+	if (!notes_ref_name)
+		return;
+
+	strbuf_addf(&name, "%s:%s", notes_ref_name,
+			sha1_to_hex(commit->object.sha1));
+	if (get_sha1(name.buf, sha1))
+		return;
+
+	if (!(msg = read_sha1_file(sha1, &type, &msglen)) || !msglen ||
+			type != OBJ_BLOB)
+		return;
+
+	if (output_encoding && *output_encoding &&
+			strcmp(utf8, output_encoding)) {
+		char *reencoded = reencode_string(msg, output_encoding, utf8);
+		if (reencoded) {
+			free(msg);
+			msg = reencoded;
+			msglen = strlen(msg);
+		}
+	}
+
+	/* we will end the annotation by a newline anyway */
+	if (msglen && msg[msglen - 1] == '\n')
+		msglen--;
+
+	strbuf_addstr(sb, "\nNotes:\n");
+
+	for (msgoffset = 0; msgoffset < msglen;) {
+		int linelen = strchrnul(msg, '\n') - msg;
+
+		strbuf_addstr(sb, "    ");
+		strbuf_add(sb, msg + msgoffset, linelen);
+		msgoffset += linelen;
+	}
+	free(msg);
+}