Adding upstream version 0.3.upstream/0.3

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 173 insertions, 0 deletions

diff --git a/lzip.h b/lzip.h
new file mode 100644
index 0000000..cd00b10
--- /dev/null
+++ b/lzip.h
@@ -0,0 +1,173 @@
+/*  Xlunzip - Test tool for the lunzip linux module
+    Copyright (C) 2016-2018 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
+
+void * resize_buffer( void * buf, const unsigned min_size );
+
+enum {
+  min_dictionary_bits = 12,
+  min_dictionary_size = 1 << min_dictionary_bits,
+  max_dictionary_bits = 29,
+  max_dictionary_size = 1 << max_dictionary_bits,
+  min_member_size = 36 };
+
+
+/* defined in main.c */
+extern int verbosity;
+
+struct Pretty_print
+  {
+  const char * name;
+  char * padded_name;
+  const char * stdin_name;
+  unsigned longest_name;
+  bool first_post;
+  };
+
+static inline void Pp_init( struct Pretty_print * const pp,
+                            const char * const filenames[],
+                            const int num_filenames )
+  {
+  unsigned stdin_name_len;
+  int i;
+  pp->name = 0;
+  pp->padded_name = 0;
+  pp->stdin_name = "(stdin)";
+  pp->longest_name = 0;
+  pp->first_post = false;
+
+  if( verbosity <= 0 ) return;
+  stdin_name_len = strlen( pp->stdin_name );
+  for( i = 0; i < num_filenames; ++i )
+    {
+    const char * const s = filenames[i];
+    const unsigned len = (strcmp( s, "-" ) == 0) ? stdin_name_len : strlen( s );
+    if( len > pp->longest_name ) pp->longest_name = len;
+    }
+  if( pp->longest_name == 0 ) pp->longest_name = stdin_name_len;
+  }
+
+static inline void Pp_set_name( struct Pretty_print * const pp,
+                                const char * const filename )
+  {
+  unsigned name_len, padded_name_len, i = 0;
+
+  if( filename && filename[0] && strcmp( filename, "-" ) != 0 )
+    pp->name = filename;
+  else pp->name = pp->stdin_name;
+  name_len = strlen( pp->name );
+  padded_name_len = max( name_len, pp->longest_name ) + 4;
+  pp->padded_name = resize_buffer( pp->padded_name, padded_name_len + 1 );
+  while( i < 2 ) pp->padded_name[i++] = ' ';
+  while( i < name_len + 2 ) { pp->padded_name[i] = pp->name[i-2]; ++i; }
+  pp->padded_name[i++] = ':';
+  while( i < padded_name_len ) pp->padded_name[i++] = ' ';
+  pp->padded_name[i] = 0;
+  pp->first_post = true;
+  }
+
+static inline void Pp_reset( struct Pretty_print * const pp )
+  { if( pp->name && pp->name[0] ) pp->first_post = true; }
+void Pp_show_msg( struct Pretty_print * const pp, const char * const msg );
+
+
+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_dict_size */
+enum { Lh_size = 6 };
+
+static inline bool Lh_verify_magic( const Lzip_header data )
+  { return ( memcmp( data, lzip_magic, 4 ) == 0 ); }
+
+/* detect (truncated) header */
+static inline bool Lh_verify_prefix( const Lzip_header data, const int sz )
+  {
+  int i; for( i = 0; i < sz && i < 4; ++i )
+    if( data[i] != lzip_magic[i] ) return false;
+  return ( sz > 0 );
+  }
+
+/* detect corrupt header */
+static inline bool Lh_verify_corrupt( const Lzip_header data )
+  {
+  int matches = 0;
+  int i; for( i = 0; i < 4; ++i )
+    if( data[i] == lzip_magic[i] ) ++matches;
+  return ( matches > 1 && matches < 4 );
+  }
+
+static inline uint8_t Lh_version( const Lzip_header data )
+  { return data[4]; }
+
+static inline bool Lh_verify_version( const Lzip_header data )
+  { return ( data[4] == 1 ); }
+
+static inline unsigned Lh_get_dictionary_size( const Lzip_header data )
+  {
+  unsigned sz = ( 1 << ( data[5] & 0x1F ) );
+  if( sz > min_dictionary_size )
+    sz -= ( sz / 16 ) * ( ( data[5] >> 5 ) & 7 );
+  return sz;
+  }
+
+
+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 Lt_get_data_crc( const Lzip_trailer data )
+  {
+  unsigned tmp = 0;
+  int i; for( i = 3; i >= 0; --i ) { tmp <<= 8; tmp += data[i]; }
+  return tmp;
+  }
+
+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;
+  }
+
+
+/* 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_error( const char * const msg, const int errcode, const bool help );
+void show_file_error( const char * const filename, const char * const msg,
+                      const int errcode );