This commit is contained in:
Jean-Francois Dockes 2020-05-31 09:50:17 +02:00
parent 24b947500f
commit 8faababeb3
2 changed files with 51 additions and 33 deletions

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@ -0,0 +1,44 @@
/* Copyright (C) 2017-2019 J.F.Dockes
*
* License: GPL 2.1
*
* 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 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "fileudi.h"
#include <stdio.h>
#include <string>
using namespace std;
int main(int argc, char **argv)
{
string path="/usr/lib/toto.cpp";
string ipath = "1:2:3:4:5:10";
string udi;
make_udi(path, ipath, udi);
printf("udi [%s]\n", udi.c_str());
path = "/some/much/too/looooooooooooooong/path/bla/bla/bla"
"/looooooooooooooong/path/bla/bla/bla/llllllllllllllllll"
"/looooooooooooooong/path/bla/bla/bla/llllllllllllllllll";
ipath = "1:2:3:4:5:10"
"1:2:3:4:5:10"
"1:2:3:4:5:10";
make_udi(path, ipath, udi);
printf("udi [%s]\n", udi.c_str());
}

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@ -1,4 +1,4 @@
/* Copyright (C) 2005 J.F.Dockes /* Copyright (C) 2005-2020 J.F.Dockes
* This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or * the Free Software Foundation; either version 2 of the License, or
@ -14,7 +14,6 @@
* Free Software Foundation, Inc., * Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/ */
#ifndef TEST_FILEUDI
#include "autoconfig.h" #include "autoconfig.h"
#include <stdio.h> #include <stdio.h>
@ -35,13 +34,13 @@ using std::string;
void pathHash(const std::string &path, std::string &phash, unsigned int maxlen) void pathHash(const std::string &path, std::string &phash, unsigned int maxlen)
{ {
if (maxlen < HASHLEN) { if (maxlen < HASHLEN) {
fprintf(stderr, "pathHash: internal error: requested len too small\n"); fprintf(stderr, "pathHash: internal error: requested len too small\n");
abort(); abort();
} }
if (path.length() <= maxlen) { if (path.length() <= maxlen) {
phash = path; phash = path;
return; return;
} }
// Compute the md5 // Compute the md5
@ -49,7 +48,7 @@ void pathHash(const std::string &path, std::string &phash, unsigned int maxlen)
MD5_CTX ctx; MD5_CTX ctx;
MD5Init(&ctx); MD5Init(&ctx);
MD5Update(&ctx, (const unsigned char *)(path.c_str()+maxlen-HASHLEN), MD5Update(&ctx, (const unsigned char *)(path.c_str()+maxlen-HASHLEN),
path.length() - (maxlen - HASHLEN)); path.length() - (maxlen - HASHLEN));
MD5Final(chash, &ctx); MD5Final(chash, &ctx);
// Encode it to ascii. This shouldn't be strictly necessary as // Encode it to ascii. This shouldn't be strictly necessary as
@ -69,7 +68,7 @@ void pathHash(const std::string &path, std::string &phash, unsigned int maxlen)
// longer paths and uniquize them by appending a hashed value. This // longer paths and uniquize them by appending a hashed value. This
// is done to avoid xapian max term length limitations, not // is done to avoid xapian max term length limitations, not
// to gain space (we gain very little even with very short maxlens // to gain space (we gain very little even with very short maxlens
// like 30). The xapian max key length seems to be around 250. // like 30). The xapian max key length is 245.
// The value for PATHHASHLEN includes the length of the hash part. // The value for PATHHASHLEN includes the length of the hash part.
#define PATHHASHLEN 150 #define PATHHASHLEN 150
@ -84,28 +83,3 @@ void make_udi(const string& fn, const string& ipath, string &udi)
pathHash(s, udi, PATHHASHLEN); pathHash(s, udi, PATHHASHLEN);
return; return;
} }
#else // TEST_FILEUDI
#include <stdio.h>
#include <string>
#include "fileudi.h"
using namespace std;
int main(int argc, char **argv)
{
string path="/usr/lib/toto.cpp";
string ipath = "1:2:3:4:5:10";
string udi;
make_udi(path, ipath, udi);
printf("udi [%s]\n", udi.c_str());
path = "/some/much/too/looooooooooooooong/path/bla/bla/bla"
"/looooooooooooooong/path/bla/bla/bla/llllllllllllllllll"
"/looooooooooooooong/path/bla/bla/bla/llllllllllllllllll";
ipath = "1:2:3:4:5:10"
"1:2:3:4:5:10"
"1:2:3:4:5:10";
make_udi(path, ipath, udi);
printf("udi [%s]\n", udi.c_str());
}
#endif // TEST_FILEUDI