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+/* Xlunzip - Test tool for the lzip_decompress linux module
+ Copyright (C) 2016-2021 Antonio Diaz Diaz.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef max
+ #define max(x,y) ((x) >= (y) ? (x) : (y))
+#endif
+#ifndef min
+ #define min(x,y) ((x) <= (y) ? (x) : (y))
+#endif
+
+enum {
+ min_dictionary_bits = 12,
+ min_dictionary_size = 1 << min_dictionary_bits, /* >= modeled_distances */
+ max_dictionary_bits = 29,
+ max_dictionary_size = 1 << max_dictionary_bits,
+ min_member_size = 36 };
+
+
+struct Pretty_print
+ {
+ const char * name;
+ char * padded_name;
+ const char * stdin_name;
+ unsigned longest_name;
+ bool first_post;
+ };
+
+
+static const uint8_t lzip_magic[4] = { 0x4C, 0x5A, 0x49, 0x50 }; /* "LZIP" */
+
+typedef uint8_t Lzip_header[6]; /* 0-3 magic bytes */
+ /* 4 version */
+ /* 5 coded dictionary size */
+enum { Lh_size = 6 };
+
+static inline bool Lh_verify_magic( const Lzip_header data )
+ { return ( memcmp( data, lzip_magic, 4 ) == 0 ); }
+
+static inline bool Lh_verify_version( const Lzip_header data )
+ { return ( data[4] == 1 ); }
+
+
+typedef uint8_t Lzip_trailer[20];
+ /* 0-3 CRC32 of the uncompressed data */
+ /* 4-11 size of the uncompressed data */
+ /* 12-19 member size including header and trailer */
+enum { Lt_size = 20 };
+
+static inline unsigned long long Lt_get_data_size( const Lzip_trailer data )
+ {
+ unsigned long long tmp = 0;
+ int i; for( i = 11; i >= 4; --i ) { tmp <<= 8; tmp += data[i]; }
+ return tmp;
+ }
+
+static inline unsigned long long Lt_get_member_size( const Lzip_trailer data )
+ {
+ unsigned long long tmp = 0;
+ int i; for( i = 19; i >= 12; --i ) { tmp <<= 8; tmp += data[i]; }
+ return tmp;
+ }
+
+
+static inline void set_retval( int * retval, const int new_val )
+ { if( *retval < new_val ) *retval = new_val; }
+
+static const char * const mem_msg = "Not enough memory.";
+
+/* defined in in_place.c */
+int decompress_in_place( const int infd, struct Pretty_print * const pp,
+ const bool testing );
+
+/* defined in main.c */
+int convert_retval( const int retval );
+long flush( void * buf, unsigned long size );
+void show_results( struct Pretty_print * const pp, const long in_pos,
+ const long out_pos, const bool testing );
+void show_file_error( const char * const filename, const char * const msg,
+ const int errcode );