cef/include/capi/cef_zip_reader_capi.h

// Copyright (c) 2023 Marshall A. Greenblatt. All rights reserved.
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#ifndef CEF_INCLUDE_CAPI_CEF_ZIP_READER_CAPI_H_
#define CEF_INCLUDE_CAPI_CEF_ZIP_READER_CAPI_H_
#pragma once

#include "include/capi/cef_base_capi.h"
#include "include/capi/cef_stream_capi.h"

#ifdef __cplusplus
extern "C" {
#endif

///
/// Structure that supports the reading of zip archives via the zlib unzip API.
/// The functions of this structure should only be called on the thread that
/// creates the object.
///
typedef struct _cef_zip_reader_t {
  ///
  /// Base structure.
  ///
  cef_base_ref_counted_t base;

  ///
  /// Moves the cursor to the first file in the archive. Returns true (1) if the
  /// cursor position was set successfully.
  ///
  int(CEF_CALLBACK* move_to_first_file)(struct _cef_zip_reader_t* self);

  ///
  /// Moves the cursor to the next file in the archive. Returns true (1) if the
  /// cursor position was set successfully.
  ///
  int(CEF_CALLBACK* move_to_next_file)(struct _cef_zip_reader_t* self);

  ///
  /// Moves the cursor to the specified file in the archive. If |caseSensitive|
  /// is true (1) then the search will be case sensitive. Returns true (1) if
  /// the cursor position was set successfully.
  ///
  int(CEF_CALLBACK* move_to_file)(struct _cef_zip_reader_t* self,
                                  const cef_string_t* fileName,
                                  int caseSensitive);

  ///
  /// Closes the archive. This should be called directly to ensure that cleanup
  /// occurs on the correct thread.
  ///
  int(CEF_CALLBACK* close)(struct _cef_zip_reader_t* self);

  ///
  /// Returns the name of the file.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t(CEF_CALLBACK* get_file_name)(
      struct _cef_zip_reader_t* self);

  ///
  /// Returns the uncompressed size of the file.
  ///
  int64_t(CEF_CALLBACK* get_file_size)(struct _cef_zip_reader_t* self);

  ///
  /// Returns the last modified timestamp for the file.
  ///
  cef_basetime_t(CEF_CALLBACK* get_file_last_modified)(
      struct _cef_zip_reader_t* self);

  ///
  /// Opens the file for reading of uncompressed data. A read password may
  /// optionally be specified.
  ///
  int(CEF_CALLBACK* open_file)(struct _cef_zip_reader_t* self,
                               const cef_string_t* password);

  ///
  /// Closes the file.
  ///
  int(CEF_CALLBACK* close_file)(struct _cef_zip_reader_t* self);

  ///
  /// Read uncompressed file contents into the specified buffer. Returns < 0 if
  /// an error occurred, 0 if at the end of file, or the number of bytes read.
  ///
  int(CEF_CALLBACK* read_file)(struct _cef_zip_reader_t* self,
                               void* buffer,
                               size_t bufferSize);

  ///
  /// Returns the current offset in the uncompressed file contents.
  ///
  int64_t(CEF_CALLBACK* tell)(struct _cef_zip_reader_t* self);

  ///
  /// Returns true (1) if at end of the file contents.
  ///
  int(CEF_CALLBACK* eof)(struct _cef_zip_reader_t* self);
} cef_zip_reader_t;

///
/// Create a new cef_zip_reader_t object. The returned object's functions can
/// only be called from the thread that created the object.
///
CEF_EXPORT cef_zip_reader_t* cef_zip_reader_create(
    struct _cef_stream_reader_t* stream);

#ifdef __cplusplus
}
#endif

#endif  // CEF_INCLUDE_CAPI_CEF_ZIP_READER_CAPI_H_