1 .\" Copyright (c) 2003-2011 Tim Kientzle
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28 .Dt ARCHIVE_READ_FILTER 3
31 .Nm archive_read_support_filter_all ,
32 .Nm archive_read_support_filter_bzip2 ,
33 .Nm archive_read_support_filter_compress ,
34 .Nm archive_read_support_filter_gzip ,
35 .Nm archive_read_support_filter_lz4 ,
36 .Nm archive_read_support_filter_lzma ,
37 .Nm archive_read_support_filter_none ,
38 .Nm archive_read_support_filter_rpm ,
39 .Nm archive_read_support_filter_uu ,
40 .Nm archive_read_support_filter_xz ,
41 .Nm archive_read_support_filter_zstd ,
42 .Nm archive_read_support_filter_program ,
43 .Nm archive_read_support_filter_program_signature
44 .Nd functions for reading streaming archives
47 Streaming Archive Library (libarchive, -larchive)
51 .Fn archive_read_support_filter_all "struct archive *"
53 .Fn archive_read_support_filter_bzip2 "struct archive *"
55 .Fn archive_read_support_filter_compress "struct archive *"
57 .Fn archive_read_support_filter_grzip "struct archive *"
59 .Fn archive_read_support_filter_gzip "struct archive *"
61 .Fn archive_read_support_filter_lrzip "struct archive *"
63 .Fn archive_read_support_filter_lz4 "struct archive *"
65 .Fn archive_read_support_filter_lzma "struct archive *"
67 .Fn archive_read_support_filter_lzop "struct archive *"
69 .Fn archive_read_support_filter_none "struct archive *"
71 .Fn archive_read_support_filter_rpm "struct archive *"
73 .Fn archive_read_support_filter_uu "struct archive *"
75 .Fn archive_read_support_filter_xz "struct archive *"
77 .Fn archive_read_support_filter_zstd "struct archive *"
79 .Fo archive_read_support_filter_program
80 .Fa "struct archive *"
84 .Fo archive_read_support_filter_program_signature
85 .Fa "struct archive *"
87 .Fa "const void *signature"
88 .Fa "size_t signature_length"
92 .Bl -tag -compact -width indent
94 .Fn archive_read_support_filter_bzip2 ,
95 .Fn archive_read_support_filter_compress ,
96 .Fn archive_read_support_filter_grzip ,
97 .Fn archive_read_support_filter_gzip ,
98 .Fn archive_read_support_filter_lrzip ,
99 .Fn archive_read_support_filter_lz4 ,
100 .Fn archive_read_support_filter_lzma ,
101 .Fn archive_read_support_filter_lzop ,
102 .Fn archive_read_support_filter_none ,
103 .Fn archive_read_support_filter_rpm ,
104 .Fn archive_read_support_filter_uu ,
105 .Fn archive_read_support_filter_xz ,
106 .Fn archive_read_support_filter_zstd ,
108 Enables auto-detection code and decompression support for the
109 specified compression.
110 These functions may fall back on external programs if an appropriate
111 library was not available at build time.
112 Decompression using an external program is usually slower than
113 decompression through built-in libraries.
116 is always enabled by default.
117 .It Fn archive_read_support_filter_all
118 Enables all available decompression filters.
119 .It Fn archive_read_support_filter_program
120 Data is fed through the specified external program before being dearchived.
121 Note that this disables automatic detection of the compression format,
122 so it makes no sense to specify this in conjunction with any other
123 decompression option.
124 .It Fn archive_read_support_filter_program_signature
125 This feeds data through the specified external program
126 but only if the initial bytes of the data match the specified
133 These functions return
135 if the compression is fully supported,
137 if the compression is supported only through an external program.
139 .Fn archive_read_support_filter_none
143 Detailed error codes and textual descriptions are available from the
146 .Fn archive_error_string
152 .Xr archive_read_data 3 ,
153 .Xr archive_read_format 3 ,
154 .Xr archive_read_format 3