From 9d0562d22cef95b0db1af30e199a371670ca8050 Mon Sep 17 00:00:00 2001
From: Timo Weingärtner <timo@tiwe.de>
Date: Tue, 23 Apr 2013 18:28:33 +0200
Subject: remove hashing stuff

the cases in which that gave a speedup are rare to nonexistent
---
 Makefile |  2 +-
 hadori.C |  4 ----
 inode.h  | 27 ++-------------------------
 3 files changed, 3 insertions(+), 30 deletions(-)

diff --git a/Makefile b/Makefile
index a55a9dd..faad8fa 100644
--- a/Makefile
+++ b/Makefile
@@ -15,7 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with hadori.  If not, see <http://www.gnu.org/licenses/>.
 
-LDFLAGS+=-lz -lboost_program_options
+LDFLAGS+=-lboost_program_options
 CXXFLAGS?=-O2 -Wall
 CXXFLAGS+=-std=c++0x
 CPPFLAGS+=-D_FILE_OFFSET_BITS=64
diff --git a/hadori.C b/hadori.C
index c2d24a9..b5e1a57 100644
--- a/hadori.C
+++ b/hadori.C
@@ -105,9 +105,6 @@ void handle_file(std::string const & path, struct stat const & s) {
 		if (not config.count("no-time"))
 			if (candidate.stat.st_mtime != s.st_mtime)
 				continue;
-		if (config.count("hash"))
-			if (candidate.get_adler() != f.get_adler())
-				continue;
 		if (!compare(candidate, f))
 			continue;
 		verbose << "linking " << candidate << " to " << path << std::endl;
@@ -190,7 +187,6 @@ int main (int const argc, char ** argv) {
 		("help,h",	"print this help message")
 		("version,V",	"print version information")
 		("no-time,t",	"ignore mtime")
-		("hash",	"use adler32 hash to speed up comparing many files with same size and mostly identical content")
 		("dry-run,n",	"don't change anything, implies --verbose")
 		("verbose,v",	"show which files get linked")
 		("debug,d",	"show files being examined")
diff --git a/inode.h b/inode.h
index 26db923..5c74a79 100644
--- a/inode.h
+++ b/inode.h
@@ -25,39 +25,16 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 
-#include <zlib.h>
-
-class inode {
-public:
+struct inode {
 	std::string const filename;
 	struct stat const stat;
-protected:	
-	uLong mutable adler;
-
-public:
 	inode (std::string const &, struct stat const);
 		
-	uLong get_adler () const;
-	
 	friend bool compare (inode const &, inode const &);
 	friend std::ostream& operator<< (std::ostream&, inode const &);
 };
 
-inline inode::inode (std::string const & __filename, struct stat const __stat) : filename(__filename), stat(__stat), adler(-1) {
-}
-
-inline uLong inode::get_adler () const {
-	if (adler == uLong(-1)) {
-		char buffer[1 << 14];
-		std::ifstream f(filename.c_str());
-		
-		adler = adler32(0L, Z_NULL, 0);
-		while (not f.eof()) {
-			f.read(buffer, sizeof(buffer));
-			adler = adler32(adler, (Bytef *) buffer, f.gcount());
-		}
-	}
-	return adler;
+inline inode::inode (std::string const & __filename, struct stat const __stat) : filename(__filename), stat(__stat) {
 }
 
 inline bool compare (inode const & l, inode const & r) {
-- 
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