Initial revision

1 files changed, 180 insertions, 0 deletions

diff --git a/rsync/whole.c b/rsync/whole.c
new file mode 100644
index 0000000..153d402
--- a/dev/null
+++ b/rsync/whole.c
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+/*= -*- c-basic-offset: 4; indent-tabs-mode: nil; -*-
+ *
+ * librsync -- the library for network deltas
+ * $Id$
+ *
+ * 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.
+ */
+
+                              /*
+                               | Is it possible that software is not
+                               | like anything else, that it is meant
+                               | to be discarded: that the whole point
+                               | is to always see it as a soap bubble?
+                               |        -- Alan Perlis
+                               */
+
+
+
+#include <config_rsync.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include <rsync.h>
+
+#include "trace.h"
+#include "fileutil.h"
+#include "sumset.h"
+#include "job.h"
+#include "buf.h"
+#include "whole.h"
+#include "util.h"
+
+/**
+ * Run a job continuously, with input to/from the two specified files.
+ * The job should already be set up, and must be free by the caller
+ * after return.
+ *
+ * Buffers of ::rs_inbuflen and ::rs_outbuflen are allocated for
+ * temporary storage.
+ *
+ * \param in_file Source of input bytes, or NULL if the input buffer
+ * should not be filled.
+ *
+ * \return RS_DONE if the job completed, or otherwise an error result.
+ */
+rs_result
+rs_whole_run(rs_job_t *job, FILE *in_file, FILE *out_file)
+{
+    rs_buffers_t    buf;
+    rs_result       result;
+    rs_filebuf_t    *in_fb = NULL, *out_fb = NULL;
+
+    if (in_file)
+        in_fb = rs_filebuf_new(in_file, rs_inbuflen);
+
+    if (out_file)
+        out_fb = rs_filebuf_new(out_file, rs_outbuflen);
+
+    result = rs_job_drive(job, &buf,
+                          in_fb ? rs_infilebuf_fill : NULL, in_fb,
+                          out_fb ? rs_outfilebuf_drain : NULL, out_fb);
+
+    if (in_fb)
+        rs_filebuf_free(in_fb);
+
+    if (out_fb)
+        rs_filebuf_free(out_fb);
+
+    return result;
+}
+
+
+
+/**
+ * Generate the signature of a basis file, and write it out to
+ * another.
+ *
+ * \param new_block_len block size for signature generation, in bytes
+ *
+ * \param strong_len truncated length of strong checksums, in bytes
+ *
+ * \sa rs_sig_begin()
+ */
+rs_result
+rs_sig_file(FILE *old_file, FILE *sig_file, size_t new_block_len,
+            size_t strong_len, rs_stats_t *stats)
+{
+    rs_job_t        *job;
+    rs_result       r;
+
+    job = rs_sig_begin(new_block_len, strong_len);
+    r = rs_whole_run(job, old_file, sig_file);
+    if (stats)
+        memcpy(stats, &job->stats, sizeof *stats);
+    rs_job_free(job);
+
+    return r;
+}
+
+
+/**
+ * Load signatures from a signature file into memory.  Return a
+ * pointer to the newly allocated structure in SUMSET.
+ *
+ * \sa rs_readsig_begin()
+ */
+rs_result
+rs_loadsig_file(FILE *sig_file, rs_signature_t **sumset, rs_stats_t *stats)
+{
+    rs_job_t            *job;
+    rs_result           r;
+
+    job = rs_loadsig_begin(sumset);
+    r = rs_whole_run(job, sig_file, NULL);
+    if (stats)
+        memcpy(stats, &job->stats, sizeof *stats);
+    rs_job_free(job);
+
+    return r;
+}
+
+
+
+rs_result
+rs_delta_file(rs_signature_t *sig, FILE *new_file, FILE *delta_file,
+              rs_stats_t *stats)
+{
+    rs_job_t            *job;
+    rs_result           r;
+
+    job = rs_delta_begin(sig);
+
+    r = rs_whole_run(job, new_file, delta_file);
+
+    if (stats)
+        memcpy(stats, &job->stats, sizeof *stats);
+
+    rs_job_free(job);
+
+    return r;
+}
+
+
+
+rs_result rs_patch_file(FILE *basis_file, FILE *delta_file, FILE *new_file,
+                        rs_stats_t *stats)
+{
+    rs_job_t            *job;
+    rs_result           r;
+
+    job = rs_patch_begin(rs_file_copy_cb, basis_file);
+
+    r = rs_whole_run(job, delta_file, new_file);
+    
+    if (stats)
+        memcpy(stats, &job->stats, sizeof *stats);
+
+    rs_job_free(job);
+
+    return r;
+}