#include "support/convert.h"
#include "support/debug.h"
#include "support/filetools.h"
+#include "support/lassert.h"
#include "support/lstrings.h"
#include "support/qstring_helpers.h"
#include "support/os.h"
#include <QTemporaryFile>
#include <QTime>
-#include "support/lassert.h"
+#include <boost/crc.hpp>
#include <boost/scoped_array.hpp>
+#include <algorithm>
+#include <iterator>
+#include <fstream>
+#include <iomanip>
#include <map>
#include <sstream>
-#include <fstream>
-#include <algorithm>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
# endif
#endif
+// Various implementations of sum(), depending on what methods
+// are available. Order is faster to slowest.
+#if defined(HAVE_MMAP) && defined(HAVE_MUNMAP)
+#define SUM_WITH_MMAP
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#include <fcntl.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <sys/mman.h>
+#endif // SUM_WITH_MMAP
+
using namespace std;
+// OK, this is ugly, but it is the only workaround I found to compile
+// with gcc (any version) on a system which uses a non-GNU toolchain.
+// The problem is that gcc uses a weak symbol for a particular
+// instantiation and that the system linker usually does not
+// understand those weak symbols (seen on HP-UX, tru64, AIX and
+// others). Thus we force an explicit instanciation of this particular
+// template (JMarc)
+template struct boost::detail::crc_table_t<32, 0x04C11DB7, true>;
+
namespace lyx {
namespace support {
+static unsigned long sum(char const * file)
+{
+#ifdef SUM_WITH_MMAP
+ //LYXERR(Debug::FILES, "lyx::sum() using mmap (lightning fast)");
+
+ int fd = open(file, O_RDONLY);
+ if (!fd)
+ return 0;
+
+ struct stat info;
+ fstat(fd, &info);
+
+ void * mm = mmap(0, info.st_size, PROT_READ,
+ MAP_PRIVATE, fd, 0);
+ // Some platforms have the wrong type for MAP_FAILED (compaq cxx).
+ if (mm == reinterpret_cast<void*>(MAP_FAILED)) {
+ close(fd);
+ return 0;
+ }
+
+ char * beg = static_cast<char*>(mm);
+ char * end = beg + info.st_size;
+
+ boost::crc_32_type crc;
+ crc.process_block(beg, end);
+ unsigned long result = crc.checksum();
+
+ munmap(mm, info.st_size);
+ close(fd);
+
+ return result;
+
+#else // no SUM_WITH_MMAP
+
+ //LYXERR(Debug::FILES, "lyx::sum() using istreambuf_iterator (fast)");
+ ifstream ifs(file, ios_base::in | ios_base::binary);
+ if (!ifs)
+ return 0;
+
+ istreambuf_iterator<char> beg(ifs);
+ istreambuf_iterator<char> end;
+ boost::crc_32_type crc;
+ crc = for_each(beg, end, crc);
+ return crc.checksum();
+
+#endif // SUM_WITH_MMAP
+}
+
/////////////////////////////////////////////////////////////////////
//
}
-extern unsigned long sum(char const * file);
-
unsigned long FileName::checksum() const
{
if (!exists()) {
+++ /dev/null
-/**
- * \file lyxsum.cpp
- * This file is part of LyX, the document processor.
- * Licence details can be found in the file COPYING.
- *
- * \author Lars Gullik Bjønnes
- *
- * Full author contact details are available in file CREDITS.
- */
-
-#include <config.h>
-
-#include "support/debug.h"
-
-#include <boost/crc.hpp>
-
-#include <algorithm>
-#include <iomanip>
-
-using namespace std;
-
-// OK, this is ugly, but it is the only workaround I found to compile
-// with gcc (any version) on a system which uses a non-GNU toolchain.
-// The problem is that gcc uses a weak symbol for a particular
-// instantiation and that the system linker usually does not
-// understand those weak symbols (seen on HP-UX, tru64, AIX and
-// others). Thus we force an explicit instanciation of this particular
-// template (JMarc)
-template struct boost::detail::crc_table_t<32, 0x04C11DB7, true>;
-
-// Various implementations of lyx::sum(), depending on what methods
-// are available. Order is faster to slowest.
-#if defined(HAVE_MMAP) && defined(HAVE_MUNMAP)
-
-#ifdef HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_STAT_H
-# include <sys/stat.h>
-#endif
-#include <fcntl.h>
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-
-#include <sys/mman.h>
-
-
-namespace lyx {
-namespace support {
-
-unsigned long sum(char const * file)
-{
- //LYXERR(Debug::FILES, "lyx::sum() using mmap (lightning fast)");
-
- int fd = open(file, O_RDONLY);
- if (!fd)
- return 0;
-
- struct stat info;
- fstat(fd, &info);
-
- void * mm = mmap(0, info.st_size, PROT_READ,
- MAP_PRIVATE, fd, 0);
- // Some platforms have the wrong type for MAP_FAILED (compaq cxx).
- if (mm == reinterpret_cast<void*>(MAP_FAILED)) {
- close(fd);
- return 0;
- }
-
- char * beg = static_cast<char*>(mm);
- char * end = beg + info.st_size;
-
- boost::crc_32_type crc;
- crc.process_block(beg, end);
- unsigned long result = crc.checksum();
-
- munmap(mm, info.st_size);
- close(fd);
-
- return result;
-}
-
-} // namespace support
-} // namespace lyx
-
-#else // No mmap
-
-#include <fstream>
-#include <iterator>
-
-namespace {
-
-template<typename InputIterator>
-inline
-unsigned long do_crc(InputIterator first, InputIterator last)
-{
- boost::crc_32_type crc;
- crc = for_each(first, last, crc);
- return crc.checksum();
-}
-
-} // namespace anon
-
-
-namespace lyx {
-namespace support {
-
-
-unsigned long sum(char const * file)
-{
- ifstream ifs(file, ios_base::in | ios_base::binary);
- if (!ifs)
- return 0;
-
-#if HAVE_DECL_ISTREAMBUF_ITERATOR
- //LYXERR(Debug::FILES, "lyx::sum() using istreambuf_iterator (fast)");
- istreambuf_iterator<char> beg(ifs);
- istreambuf_iterator<char> end;
-#else
- //LYXERR(Debug::FILES, "lyx::sum() using istream_iterator (slow as a snail)");
- ifs.unsetf(ios::skipws);
- istream_iterator<char> beg(ifs);
- istream_iterator<char> end;
-#endif
-
- return do_crc(beg,end);
-}
-
-} // namespace support
-} // namespace lyx
-
-#endif // mmap
projects / features.git / commitdiff