1 files changed, 40 insertions, 0 deletions
diff --git a/zutils.h b/zutils.h
new file mode 100644
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--- /dev/null
+++ b/zutils.h
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+/* Zutils - Utilities dealing with compressed files
+   Copyright (C) 2009-2023 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/>.
+*/
+
+inline const char * name_or_stdin( const char * const name )
+  { return ( name[0] == '-' && name[1] == 0 ) ? "(stdin)" : name; }
+
+int readblock( const int fd, uint8_t * const buf, const int size );
+int writeblock( const int fd, const uint8_t * const buf, const int size );
+bool feed_data( const std::string & filename, const int infd, const int outfd,
+                const uint8_t * magic_data, const int magic_size );
+
+struct Children
+  {
+  const char * compressor_name;
+  pid_t pid[2];				// data feeder, compressor
+  };
+bool good_status( const Children & children, const bool finished );
+bool set_data_feeder( const std::string & filename, int * const infdp,
+                      Children & children, int format_index );
+
+enum { magic_buf_size = 10 };		// >= longest extended magic (bzip2)
+
+// Return format_index, or -1 if uncompressed.
+//
+int test_format( const int infd, uint8_t magic_data[],
+                 int * const magic_sizep );