Add new copyFileToDir helper function.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@7091 a592a061-630c-0410-9148-cb99ea01b6c8

src/support/ChangeLog

@@ -1,3 +1,9 @@
+2003-06-02  Angus Leeming  <leeming@lyx.org>
+
+	* filetools.[Ch] (copyFileToDir): new helper function.
+
+	* os.h: remove trailing semi-colon from end of namespace os block.
+
 2003-06-01  Angus Leeming  <leeming@lyx.org>
 
 	* filetools.h (LibScriptSearch): give the function a meaningful

src/support/filetools.C

@@ -1320,3 +1320,40 @@ string const readBB_from_PSFile(string const & file)
 	readBB_lyxerrMessage(file_, zipped, "no bb found");
 	return string();
 }
+
+
+string copyFileToDir(string const & path, string const & file_in)
+{
+	lyx::Assert(AbsolutePath(path));
+
+	// First, make the file path relative to path.
+	string file_out = MakeRelPath(path, NormalizePath(file_in));
+	file_out = os::slashify_path(file_out);
+
+	// Now generate a unique filename.
+	// Remove the extension.
+	file_out = ChangeExtension(file_out, string());
+	// Replace '/' in the file name with '_'
+	file_out = subst(file_out, "/", "_");
+	// Replace '.' in the file name with '_'
+	file_out = subst(file_out, ".", "_");
+	// Add the extension back on
+	file_out = ChangeExtension(file_out, GetExtension(file_in));
+	// Put this file in the buffer's temp dir
+	file_out = MakeAbsPath(file_out, path);
+
+	// If the original is newer than the copy, then copy the original
+	// to the new directory.
+	FileInfo fi(file_in);
+	FileInfo fi2(file_out);
+
+	bool success = true;
+	if (fi.exist()) {
+		if (!fi2.exist() ||
+		    difftime(fi.getModificationTime(),
+			     fi2.getModificationTime()) >= 0)
+			success = lyx::copy(file_in, file_out);
+	}
+
+	return success ? file_out : string();
+}

src/support/filetools.h

@@ -11,6 +11,7 @@
 #include <vector>
 #include <utility>
 #include "LString.h"
+#include "os.h"
 
 
 /// remove directory and all contents, returns 0 on success
@@ -200,6 +201,13 @@ void removeAutosaveFile(string const & filename);
 /// read the BoundingBox entry from a ps/eps/pdf-file
 string const readBB_from_PSFile(string const & file);
 
+/** Copy \param file to directory \param path. The file name is manipulated
+    so that eg some/path/to/file becomes some_path_to_file.
+    \returns this file name if the file is copied successfully, else
+    \returns an empty string.
+ */
+string copyFileToDir(string const & path, string const & file);
+
 typedef std::pair<int, string> cmd_ret;
 
 cmd_ret const RunCommand(string const & cmd);

src/support/os.h

@@ -43,6 +43,6 @@ namespace os {
 	char const * popen_read_mode();
 	//
 	void warn(string const & mesg);
-};
+}
 
 #endif