1 files changed, 183 insertions, 0 deletions
diff --git a/src/Common/libzip/zip_progress.c b/src/Common/libzip/zip_progress.c
new file mode 100644
index 00000000..46c8bb81
--- /dev/null
+++ b/src/Common/libzip/zip_progress.c
@@ -0,0 +1,183 @@
+/*
+ zip_progress.c -- progress reporting
+ Copyright (C) 2017 Dieter Baron and Thomas Klausner
+
+ This file is part of libzip, a library to manipulate ZIP archives.
+ The authors can be contacted at <libzip@nih.at>
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ 3. The names of the authors may not be used to endorse or promote
+ products derived from this software without specific prior
+ written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
+ OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include <stdlib.h>
+
+
+#define _ZIP_COMPILING_DEPRECATED
+#include "zipint.h"
+
+struct zip_progress {
+    zip_t *za;
+    zip_progress_callback callback;
+    void (*ud_free)(void *);
+
+    void *ud;
+
+    double precision;
+
+    /* state */
+    double last_update; /* last value callback function was called with */
+
+    double start; /* start of sub-progress section */
+    double end;   /* end of sub-progress section */
+};
+
+
+void
+_zip_progress_end(zip_progress_t *progress) {
+    _zip_progress_update(progress, 1.0);
+}
+
+
+void
+_zip_progress_free(zip_progress_t *progress) {
+    if (progress == NULL) {
+	return;
+    }
+
+    if (progress->ud_free) {
+	progress->ud_free(progress->ud);
+    }
+
+    free(progress);
+}
+
+
+zip_progress_t *
+_zip_progress_new(zip_t *za, double precision, zip_progress_callback callback, void (*ud_free)(void *), void *ud) {
+    zip_progress_t *progress = (zip_progress_t *)malloc(sizeof(*progress));
+
+    if (progress == NULL) {
+	zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
+	return NULL;
+    }
+
+    progress->za = za;
+    progress->callback = callback;
+    progress->ud_free = ud_free;
+    progress->ud = ud;
+    progress->precision = precision;
+
+    return progress;
+}
+
+
+void
+_zip_progress_start(zip_progress_t *progress) {
+    if (progress == NULL) {
+	return;
+    }
+
+    progress->last_update = 0.0;
+    progress->callback(progress->za, 0.0, progress->ud);
+}
+
+
+void
+_zip_progress_subrange(zip_progress_t *progress, double start, double end) {
+    if (progress == NULL) {
+	return;
+    }
+
+    progress->start = start;
+    progress->end = end;
+
+    _zip_progress_update(progress, 0.0);
+}
+
+void
+_zip_progress_update(zip_progress_t *progress, double sub_current) {
+    double current;
+
+    if (progress == NULL) {
+	return;
+    }
+
+    current = ZIP_MIN(ZIP_MAX(sub_current, 0.0), 1.0) * (progress->end - progress->start) + progress->start;
+
+    if (current - progress->last_update > progress->precision) {
+	progress->callback(progress->za, current, progress->ud);
+	progress->last_update = current;
+    }
+}
+
+
+ZIP_EXTERN int
+zip_register_progress_callback_with_state(zip_t *za, double precision, zip_progress_callback callback, void (*ud_free)(void *), void *ud) {
+    zip_progress_t *progress = NULL;
+
+    if (callback != NULL) {
+	if ((progress = _zip_progress_new(za, precision, callback, ud_free, ud)) == NULL) {
+	    return -1;
+	}
+    }
+
+    _zip_progress_free(za->progress);
+    za->progress = progress;
+
+    return 0;
+}
+
+
+struct legacy_ud {
+    zip_progress_callback_t callback;
+};
+
+
+static void
+_zip_legacy_progress_callback(zip_t *za, double progress, void *vud) {
+    struct legacy_ud *ud = (struct legacy_ud *)vud;
+
+    ud->callback(progress);
+}
+
+ZIP_EXTERN void
+zip_register_progress_callback(zip_t *za, zip_progress_callback_t progress_callback) {
+    struct legacy_ud *ud;
+
+    if (progress_callback == NULL) {
+	zip_register_progress_callback_with_state(za, 0, NULL, NULL, NULL);
+    }
+
+    if ((ud = (struct legacy_ud *)malloc(sizeof(*ud))) == NULL) {
+	return;
+    }
+
+    ud->callback = progress_callback;
+
+    if (zip_register_progress_callback_with_state(za, 0.001, _zip_legacy_progress_callback, free, ud) < 0) {
+	free(ud);
+    }
+}