mirror of https://github.com/PCSX2/pcsx2.git
91 lines
4.5 KiB
C
91 lines
4.5 KiB
C
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/*
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zip_source_file.h -- header for common file operations
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Copyright (C) 2020-2022 Dieter Baron and Thomas Klausner
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This file is part of libzip, a library to manipulate ZIP archives.
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The authors can be contacted at <info@libzip.org>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. The names of the authors may not be used to endorse or promote
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products derived from this software without specific prior
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written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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struct zip_source_file_stat {
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zip_uint64_t size; /* must be valid for regular files */
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time_t mtime; /* must always be valid, is initialized to current time */
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bool exists; /* must always be valid */
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bool regular_file; /* must always be valid */
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};
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typedef struct zip_source_file_context zip_source_file_context_t;
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typedef struct zip_source_file_operations zip_source_file_operations_t;
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typedef struct zip_source_file_stat zip_source_file_stat_t;
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struct zip_source_file_context {
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zip_error_t error; /* last error information */
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zip_int64_t supports;
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/* reading */
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char *fname; /* name of file to read from */
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void *f; /* file to read from */
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zip_stat_t st; /* stat information passed in */
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zip_file_attributes_t attributes; /* additional file attributes */
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zip_error_t stat_error; /* error returned for stat */
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zip_uint64_t start; /* start offset of data to read */
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zip_uint64_t len; /* length of the file, 0 for up to EOF */
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zip_uint64_t offset; /* current offset relative to start (0 is beginning of part we read) */
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/* writing */
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char *tmpname;
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void *fout;
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zip_source_file_operations_t *ops;
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void *ops_userdata;
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};
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/* The following methods must be implemented to support each feature:
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- close, read, seek, and stat must always be implemented.
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- To support specifying the file by name, open, and strdup must be implemented.
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- For write support, the file must be specified by name and close, commit_write, create_temp_output, remove, rollback_write, and tell must be implemented.
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- create_temp_output_cloning is always optional. */
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struct zip_source_file_operations {
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void (*close)(zip_source_file_context_t *ctx);
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zip_int64_t (*commit_write)(zip_source_file_context_t *ctx);
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zip_int64_t (*create_temp_output)(zip_source_file_context_t *ctx);
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zip_int64_t (*create_temp_output_cloning)(zip_source_file_context_t *ctx, zip_uint64_t len);
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bool (*open)(zip_source_file_context_t *ctx);
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zip_int64_t (*read)(zip_source_file_context_t *ctx, void *buf, zip_uint64_t len);
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zip_int64_t (*remove)(zip_source_file_context_t *ctx);
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void (*rollback_write)(zip_source_file_context_t *ctx);
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bool (*seek)(zip_source_file_context_t *ctx, void *f, zip_int64_t offset, int whence);
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bool (*stat)(zip_source_file_context_t *ctx, zip_source_file_stat_t *st);
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char *(*string_duplicate)(zip_source_file_context_t *ctx, const char *);
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zip_int64_t (*tell)(zip_source_file_context_t *ctx, void *f);
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zip_int64_t (*write)(zip_source_file_context_t *ctx, const void *data, zip_uint64_t len);
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};
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zip_source_t *zip_source_file_common_new(const char *fname, void *file, zip_uint64_t start, zip_int64_t len, const zip_stat_t *st, zip_source_file_operations_t *ops, void *ops_userdata, zip_error_t *error);
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