From 775c3495e215ed1a9604ec045465483360704b52 Mon Sep 17 00:00:00 2001
From: Andy Cedilnik <andy.cedilnik@kitware.com>
Date: Wed, 12 Oct 2005 13:36:07 -0400
Subject: ENH: Add file time comparison code
---
Source/CMakeLists.txt | 2 +
Source/cmFileTimeComparison.cxx | 168 ++++++++++++++++++++++++++++++++++++++++
Source/cmFileTimeComparison.h | 50 ++++++++++++
bootstrap | 1 +
4 files changed, 221 insertions(+)
create mode 100644 Source/cmFileTimeComparison.cxx
create mode 100644 Source/cmFileTimeComparison.h
diff --git a/Source/CMakeLists.txt b/Source/CMakeLists.txt
index 21334b2..970d11b 100644
--- a/Source/CMakeLists.txt
+++ b/Source/CMakeLists.txt
@@ -115,6 +115,8 @@ SET(SRCS
cmMakefile.cxx
cmMakefile.h
cmOrderLinkDirectories.cxx
+ cmFileTimeComparison.cxx
+ cmFileTimeComparison.h
cmSourceFile.cxx
cmSourceFile.h
cmSourceGroup.cxx
diff --git a/Source/cmFileTimeComparison.cxx b/Source/cmFileTimeComparison.cxx
new file mode 100644
index 0000000..2b0c8cf
--- /dev/null
+++ b/Source/cmFileTimeComparison.cxx
@@ -0,0 +1,168 @@
+/*=========================================================================
+
+ Program: CMake - Cross-Platform Makefile Generator
+ Module: $RCSfile$
+ Language: C++
+ Date: $Date$
+ Version: $Revision$
+
+ Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
+ See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
+
+ This software is distributed WITHOUT ANY WARRANTY; without even
+ the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ PURPOSE. See the above copyright notices for more information.
+
+=========================================================================*/
+#include "cmFileTimeComparison.h"
+
+#include <cmsys/Directory.hxx>
+#include <cmsys/RegularExpression.hxx>
+#include <cmsys/SystemTools.hxx>
+
+#if defined(CMAKE_BUILD_WITH_CMAKE)
+# include <cmsys/hash_map.hxx>
+#endif
+
+#include <ctype.h>
+#include <sys/stat.h>
+
+#if !defined(_WIN32) || defined(__CYGWIN__)
+# define cmFileTimeComparison_Type struct stat
+#else
+# define cmFileTimeComparison_Type FILETIME
+#endif
+
+class cmFileTimeComparisonInternal
+{
+public:
+ inline bool FileTimeCompare(const char* f1, const char* f2, int* result);
+
+private:
+#if defined(CMAKE_BUILD_WITH_CMAKE)
+ class HashString
+ {
+ public:
+ size_t operator()(const cmStdString& s) const
+ {
+ return h(s.c_str());
+ }
+ cmsys::hash<const char*> h;
+ };
+ typedef cmsys::hash_map<cmStdString, cmFileTimeComparison_Type, HashString> FileStatsMap;
+ FileStatsMap Files;
+#endif
+
+ inline bool Stat(const char* fname, cmFileTimeComparison_Type* st);
+ inline int Compare(cmFileTimeComparison_Type* st1, cmFileTimeComparison_Type* st2);
+};
+
+bool cmFileTimeComparisonInternal::Stat(const char* fname, cmFileTimeComparison_Type* st)
+{
+#if defined(CMAKE_BUILD_WITH_CMAKE)
+ cmFileTimeComparisonInternal::FileStatsMap::iterator fit = this->Files.find(fname);
+ if ( fit != this->Files.end() )
+ {
+ *st = fit->second;
+ return 0;
+ }
+#endif
+#if !defined(_WIN32) || defined(__CYGWIN__)
+ int res = ::stat(fname, st);
+ if ( res != 0 )
+ {
+ return false;
+ }
+#else
+ // Windows version. Create file handles and get the modification times.
+ HANDLE hf1 = CreateFile(f1, GENERIC_READ, FILE_SHARE_READ,
+ NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS,
+ NULL);
+ if(hf1 == INVALID_HANDLE_VALUE)
+ {
+ return false;
+ }
+ if(!GetFileTime(hf1, 0, 0, st))
+ {
+ CloseHandle(hf1);
+ return false;
+ }
+ CloseHandle(hf1);
+#endif
+#if defined(CMAKE_BUILD_WITH_CMAKE)
+ this->Files[fname] = *st;
+#endif
+ return true;
+}
+
+cmFileTimeComparison::cmFileTimeComparison()
+{
+ m_Internals = new cmFileTimeComparisonInternal;
+}
+
+cmFileTimeComparison::~cmFileTimeComparison()
+{
+ delete m_Internals;
+}
+
+bool cmFileTimeComparison::FileTimeCompare(const char* f1, const char* f2, int* result)
+{
+ return m_Internals->FileTimeCompare(f1, f2, result);
+}
+
+int cmFileTimeComparisonInternal::Compare(cmFileTimeComparison_Type* s1, cmFileTimeComparison_Type* s2)
+{
+#if !defined(_WIN32) || defined(__CYGWIN__)
+# if KWSYS_STAT_HAS_ST_MTIM
+ // Compare using nanosecond resolution.
+ if(s1->st_mtim.tv_sec < s2->st_mtim.tv_sec)
+ {
+ return -1;
+ }
+ else if(s1->st_mtim.tv_sec > s2->st_mtim.tv_sec)
+ {
+ return 1;
+ }
+ else if(s1->st_mtim.tv_nsec < s2->st_mtim.tv_nsec)
+ {
+ return -1;
+ }
+ else if(s1->st_mtim.tv_nsec > s2->st_mtim.tv_nsec)
+ {
+ return 1;
+ }
+# else
+ // Compare using 1 second resolution.
+ if(s1->st_mtime < s2->st_mtime)
+ {
+ return -1;
+ }
+ else if(s1->st_mtime > s2->st_mtime)
+ {
+ return 1;
+ }
+ return 0;
+# endif
+#else
+ return (int)CompareFileTime(s1, s2);
+#endif
+}
+
+bool cmFileTimeComparisonInternal::FileTimeCompare(const char* f1, const char* f2, int* result)
+{
+ // Default to same time.
+ *result = 0;
+ cmFileTimeComparison_Type s1;
+ if(!this->Stat(f1, &s1))
+ {
+ return false;
+ }
+ cmFileTimeComparison_Type s2;
+ if(!this->Stat(f2, &s2))
+ {
+ return false;
+ }
+ *result = this->Compare(&s1, &s2);
+ return true;
+}
+
diff --git a/Source/cmFileTimeComparison.h b/Source/cmFileTimeComparison.h
new file mode 100644
index 0000000..2fc243f
--- /dev/null
+++ b/Source/cmFileTimeComparison.h
@@ -0,0 +1,50 @@
+/*=========================================================================
+
+ Program: CMake - Cross-Platform Makefile Generator
+ Module: $RCSfile$
+ Language: C++
+ Date: $Date$
+ Version: $Revision$
+
+ Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
+ See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
+
+ This software is distributed WITHOUT ANY WARRANTY; without even
+ the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ PURPOSE. See the above copyright notices for more information.
+
+=========================================================================*/
+#ifndef cmFileTimeComparison_h
+#define cmFileTimeComparison_h
+
+#include "cmStandardIncludes.h"
+
+class cmFileTimeComparisonInternal;
+
+/** \class cmFileTimeComparison
+ * \brief Helper class for performing globbing searches.
+ *
+ * Finds all files that match a given globbing expression.
+ */
+class cmFileTimeComparison
+{
+public:
+ cmFileTimeComparison();
+ ~cmFileTimeComparison();
+
+ /**
+ * Compare file modification times.
+ * Return true for successful comparison and false for error.
+ * When true is returned, result has -1, 0, +1 for
+ * f1 older, same, or newer than f2.
+ */
+ bool FileTimeCompare(const char* f1, const char* f2, int* result);
+
+protected:
+
+ cmFileTimeComparisonInternal* m_Internals;
+};
+
+
+#endif
+
diff --git a/bootstrap b/bootstrap
index 7e912ff..0070a5d 100755
--- a/bootstrap
+++ b/bootstrap
@@ -49,6 +49,7 @@ CMAKE_CXX_SOURCES="\
cmLocalGenerator \
cmSourceFile \
cmSystemTools \
+ cmFileTimeComparison \
cmGlobalUnixMakefileGenerator3 \
cmGlobalXCodeGenerator \
cmLocalXCodeGenerator \
--
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