Initial revision

1 files changed, 131 insertions, 0 deletions

diff --git a/rsync/emit.c b/rsync/emit.c
new file mode 100644
index 0000000..bdfc6d1
--- a/dev/null
+++ b/rsync/emit.c
@@ -0,0 +1,131 @@
+/*=                    -*- c-basic-offset: 4; indent-tabs-mode: nil; -*-
+ *
+ * librsync -- dynamic caching and delta update in HTTP
+ * $Id$
+ * 
+ * Copyright (C) 2000, 2001 by Martin Pool <mbp@samba.org>
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+                              /*
+                               * [almost sobbing] They don't sleep
+                               * anymore on the beach.  They don't
+                               * sleep on the beach anymore.
+                               */
+
+/*
+ * TODO: Pluggable encoding formats:
+ *
+ *  - gdiff-style
+ *  - rsync 24
+ *  - ed (text)
+ *  - Delta HTTP
+ */
+
+
+#include <config_rsync.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "rsync.h"
+#include "command.h"
+#include "protocol.h"
+#include "trace.h"
+#include "emit.h"
+#include "prototab.h"
+#include "netint.h"
+#include "sumset.h"
+#include "job.h"
+
+
+/*
+ * Write the magic for the start of a delta.
+ */
+void
+rs_emit_delta_header(rs_job_t *job)
+{
+    rs_trace("emit DELTA magic");
+    rs_squirt_n4(job, RS_DELTA_MAGIC);
+}
+
+
+
+/* Write a LITERAL command. */
+void
+rs_emit_literal_cmd(rs_job_t *job, int len)
+{
+    int cmd;
+    int param_len;
+
+    switch (param_len = rs_int_len(len)) {
+    case 1:
+        cmd = RS_OP_LITERAL_N1;
+        break;
+    case 2:
+        cmd = RS_OP_LITERAL_N2;
+        break;
+    case 4:
+        cmd = RS_OP_LITERAL_N4;
+        break;
+    default:
+        rs_fatal("What?");
+    }
+    
+    rs_trace("emit LITERAL_N%d(len=%d), cmd_byte=%#x", param_len, len, cmd);
+    rs_squirt_byte(job, cmd);
+    rs_squirt_netint(job, len, param_len);
+
+    job->stats.lit_cmds++;
+    job->stats.lit_bytes += len;
+    job->stats.lit_cmdbytes += 1 + param_len;
+}
+
+
+/** Write a COPY command. */
+void
+rs_emit_copy_cmd(rs_job_t *job, rs_long_t where, rs_long_t len)
+{
+    int            cmd;
+    rs_stats_t     *stats = &job->stats;
+
+    cmd = RS_OP_COPY_N4_N4;
+
+    rs_trace("emit COPY_N4_N4(where=%.0f, len=%.0f), cmd_byte=%#x",
+             (double) where, (double) len, cmd);
+    rs_squirt_byte(job, cmd);
+    rs_squirt_netint(job, where, 4);
+    rs_squirt_netint(job, len, 4);
+
+    stats->copy_cmds++;
+    stats->copy_bytes += len;
+    stats->copy_cmdbytes += 1 + 4 + 4;
+
+    /* TODO: All the stats */
+}
+
+
+/** Write an END command. */
+void
+rs_emit_end_cmd(rs_job_t *job)
+{
+    int cmd = RS_OP_END;
+    
+    rs_trace("emit END, cmd_byte=%#x", cmd);
+    rs_squirt_byte(job, cmd);
+}