/* zip_progress.c -- progress reporting Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner This file is part of libzip, a library to manipulate ZIP archives. The authors can be contacted at <info@libzip.org> 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_progress; void (*ud_progress_free)(void *); void *ud_progress; zip_cancel_callback callback_cancel; void (*ud_cancel_free)(void *); void *ud_cancel; 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 */ }; static void _zip_progress_free_cancel_callback(zip_progress_t *progress); static void _zip_progress_free_progress_callback(zip_progress_t *progress); static zip_progress_t *_zip_progress_new(zip_t *za); static void _zip_progress_set_cancel_callback(zip_progress_t *progress, zip_cancel_callback callback, void (*ud_free)(void *), void *ud); static void _zip_progress_set_progress_callback(zip_progress_t *progress, double precision, zip_progress_callback callback, void (*ud_free)(void *), void *ud); 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; } _zip_progress_free_progress_callback(progress); _zip_progress_free_cancel_callback(progress); free(progress); } static zip_progress_t * _zip_progress_new(zip_t *za) { 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_progress = NULL; progress->ud_progress_free = NULL; progress->ud_progress = NULL; progress->precision = 0.0; progress->callback_cancel = NULL; progress->ud_cancel_free = NULL; progress->ud_cancel = NULL; return progress; } static void _zip_progress_free_progress_callback(zip_progress_t *progress) { if (progress->ud_progress_free) { progress->ud_progress_free(progress->ud_progress); } progress->callback_progress = NULL; progress->ud_progress = NULL; progress->ud_progress_free = NULL; } static void _zip_progress_free_cancel_callback(zip_progress_t *progress) { if (progress->ud_cancel_free) { progress->ud_cancel_free(progress->ud_cancel); } progress->callback_cancel = NULL; progress->ud_cancel = NULL; progress->ud_cancel_free = NULL; } static void _zip_progress_set_progress_callback(zip_progress_t *progress, double precision, zip_progress_callback callback, void (*ud_free)(void *), void *ud) { _zip_progress_free_progress_callback(progress); progress->callback_progress = callback; progress->ud_progress_free = ud_free; progress->ud_progress = ud; progress->precision = precision; } void _zip_progress_set_cancel_callback(zip_progress_t *progress, zip_cancel_callback callback, void (*ud_free)(void *), void *ud) { _zip_progress_free_cancel_callback(progress); progress->callback_cancel = callback; progress->ud_cancel_free = ud_free; progress->ud_cancel = ud; } int _zip_progress_start(zip_progress_t *progress) { if (progress == NULL) { return 0; } if (progress->callback_progress != NULL) { progress->last_update = 0.0; progress->callback_progress(progress->za, 0.0, progress->ud_progress); } if (progress->callback_cancel != NULL) { if (progress->callback_cancel(progress->za, progress->ud_cancel)) { return -1; } } return 0; } int _zip_progress_subrange(zip_progress_t *progress, double start, double end) { if (progress == NULL) { return 0; } progress->start = start; progress->end = end; return _zip_progress_update(progress, 0.0); } int _zip_progress_update(zip_progress_t *progress, double sub_current) { double current; if (progress == NULL) { return 0; } if (progress->callback_progress != NULL) { 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(progress->za, current, progress->ud_progress); progress->last_update = current; } } if (progress->callback_cancel != NULL) { if (progress->callback_cancel(progress->za, progress->ud_cancel)) { return -1; } } return 0; } ZIP_EXTERN int zip_register_progress_callback_with_state(zip_t *za, double precision, zip_progress_callback callback, void (*ud_free)(void *), void *ud) { if (callback != NULL) { if (za->progress == NULL) { if ((za->progress = _zip_progress_new(za)) == NULL) { return -1; } } _zip_progress_set_progress_callback(za->progress, precision, callback, ud_free, ud); } else { if (za->progress != NULL) { if (za->progress->callback_cancel == NULL) { _zip_progress_free(za->progress); za->progress = NULL; } else { _zip_progress_free_progress_callback(za->progress); } } } return 0; } ZIP_EXTERN int zip_register_cancel_callback_with_state(zip_t *za, zip_cancel_callback callback, void (*ud_free)(void *), void *ud) { if (callback != NULL) { if (za->progress == NULL) { if ((za->progress = _zip_progress_new(za)) == NULL) { return -1; } } _zip_progress_set_cancel_callback(za->progress, callback, ud_free, ud); } else { if (za->progress != NULL) { if (za->progress->callback_progress == NULL) { _zip_progress_free(za->progress); za->progress = NULL; } else { _zip_progress_free_cancel_callback(za->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); } }