This patch implements a FilterVisitor class that is a decorator on a
FindVisitor and filters files according to the supplied Filter class (also
implemented). It also implements a particular filter, ExcludeNameFilter,
that excludes any files with names matching a pattern.
The two new files, FilterVisitor.cc and FilterVisitor.h, will have to be
'cvs add'ed.
Igor
==============================================================================
ChangeLog:
2003-03-17 Igor Pechtchanski <[EMAIL PROTECTED]>
* postinstall.cc (do_postinstall): Filter out '*.done'.
* FilterVisitor.h: New header file. Declare the
FilterVisitor, Filter, and ExcludeNameFilter classes.
* FilterVisitor.cc: New file. Implement FilterVisitor,
Filter, and ExcludeNameFilter.
* Makefile.am: Add FilterVisitor.cc and FilterVisitor.h
to inilint_SOURCES and setup_SOURCES.
--
http://cs.nyu.edu/~pechtcha/
|\ _,,,---,,_ [EMAIL PROTECTED]
ZZZzz /,`.-'`' -. ;-;;,_ [EMAIL PROTECTED]
|,4- ) )-,_. ,\ ( `'-' Igor Pechtchanski
'---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow!
Oh, boy, virtual memory! Now I'm gonna make myself a really *big* RAMdisk!
-- /usr/games/fortune
Index: FilterVisitor.cc
===================================================================
RCS file: FilterVisitor.cc
diff -N FilterVisitor.cc
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ FilterVisitor.cc 17 Mar 2003 18:01:47 -0000
@@ -0,0 +1,213 @@
+/*
+ * Copyright (c) 2003 Igor Pechtchanski.
+ *
+ * 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 of the License, or
+ * (at your option) any later version.
+ *
+ * A copy of the GNU General Public License can be found at
+ * http://www.gnu.org/
+ *
+ * Written by Igor Pechtchanski <[EMAIL PROTECTED]>
+ *
+ */
+
+#if 0
+static const char *cvsid =
+ "\n%%% $Id$\n";
+#endif
+
+#include "FilterVisitor.h"
+#include "String++.h"
+#include "find.h"
+
+#include <iostream>
+
+FilterVisitor::FilterVisitor(FindVisitor *visitor, Filter *filter)
+ : _visitor(visitor), _filter(filter) {}
+
+FilterVisitor::~FilterVisitor() {}
+
+void
+FilterVisitor::visitFile(String const &basePath, WIN32_FIND_DATA const *aFile)
+{
+ if (_filter->matchFile(basePath, aFile))
+ _visitor->visitFile(basePath, aFile);
+}
+
+void
+FilterVisitor::visitDirectory(String const &basePath, WIN32_FIND_DATA const *aDir)
+{
+ if (_filter->matchDirectory(basePath, aDir))
+ _visitor->visitDirectory(basePath, aDir);
+}
+
+Filter::Filter() {}
+Filter::~Filter() {}
+
+bool
+Filter::matchFile(String const &basePath, WIN32_FIND_DATA const *aFile)
+{
+ return true;
+}
+
+bool
+Filter::matchDirectory(String const &basePath, WIN32_FIND_DATA const *aDir)
+{
+ return true;
+}
+
+ExcludeNameFilter::ExcludeNameFilter() : _filePattern(""), _dirPattern("") {}
+
+ExcludeNameFilter::~ExcludeNameFilter(){}
+
+ExcludeNameFilter::ExcludeNameFilter(String const &filePattern,
+ String const &dirPattern)
+ : _filePattern(filePattern), _dirPattern(dirPattern) {}
+
+bool
+ExcludeNameFilter::matchFile(String const &basePath, WIN32_FIND_DATA const *aFile)
+{
+ return !_filePattern.match(basePath + aFile->cFileName);
+}
+
+bool
+ExcludeNameFilter::matchDirectory(String const &basePath, WIN32_FIND_DATA const *aDir)
+{
+ return !_dirPattern.match(basePath + aDir->cFileName);
+}
+
+/*
+ * This supports two wildcard characters, '*' and '?', as well as the
+ * '[]'-style character sets ('^' to invert).
+ * Use '\' to escape special characters.
+ * Shamelessly stolen from fileutils-4.1.
+ */
+static bool
+strmatch (const char *pattern, const char *filename)
+{
+ register const char *p = pattern, *n = filename;
+ register char c;
+
+ while ((c = *p++) != '\0')
+ {
+ switch (c)
+ {
+ case '?': /* A '?' matches exactly one character */
+ if (*n == '\0')
+ return false;
+ break;
+
+ case '\\': /* Escape next character */
+ c = *p++;
+ if (c == '\0')
+ return false;
+ if (*n != c)
+ return false;
+ break;
+
+ case '*': /* A '*' matches any number of characters */
+ for (c = *p++; c == '?' || c == '*'; c = *p++)
+ {
+ if (c == '?')
+ {
+ /* A '?' needs to match one character. */
+ if (*n == '\0')
+ /* There isn't another character; no match. */
+ return false;
+ else
+ /* One character of the filename is consumed in matching
+ this ? wildcard, so *??? won't match if there are
+ less than three characters. */
+ ++n;
+ }
+ }
+
+ if (c == '\0')
+ return true;
+
+ {
+ char c1 = (c == '\\') ? *p : c;
+ for (--p; *n != '\0'; ++n) /* Eat up all chars */
+ if ((c == '[' || *n == c1) && strmatch (p, n))
+ return true;
+ return false;
+ }
+
+ case '[': /* A '[A-Z]' matches any char between 'A' and 'Z' */
+ {
+ /* Nonzero if the sense of the character class is inverted. */
+ register bool invert;
+
+ if (*n == '\0')
+ return false;
+
+ invert = (*p == '^');
+ if (invert)
+ ++p;
+
+ c = *p++;
+ for (;;)
+ {
+ register char cstart = c, cend = c;
+
+ if (c == '\0')
+ /* [ (unterminated) loses. */
+ return false;
+
+ c = *p++;
+
+ if (c == '-' && *p != ']')
+ {
+ cend = *p++;
+ if (cend == '\0')
+ return false;
+
+ c = *p++;
+ }
+
+ if (*n >= cstart && *n <= cend)
+ goto matched;
+
+ if (c == ']')
+ break;
+ }
+ if (!invert)
+ return false;
+ break;
+
+ matched:;
+ /* Skip the rest of the [...] that already matched. */
+ while (c != ']')
+ {
+ if (c == '\0')
+ /* [... (unterminated) loses. */
+ return false;
+
+ c = *p++;
+ }
+ if (invert)
+ return false;
+ }
+ break;
+
+ default:
+ if (c != *n)
+ return false;
+ }
+
+ ++n;
+ }
+
+ if (*n == '\0')
+ return true;
+
+ return false;
+}
+
+bool ExcludeNameFilter::Glob::match(String const &filename)
+{
+ return strmatch(this->_pattern.cstr_oneuse(), filename.cstr_oneuse());
+}
+
Index: FilterVisitor.h
===================================================================
RCS file: FilterVisitor.h
diff -N FilterVisitor.h
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ FilterVisitor.h 17 Mar 2003 18:01:47 -0000
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2003 Igor Pechtchanski.
+ *
+ * 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 of the License, or
+ * (at your option) any later version.
+ *
+ * A copy of the GNU General Public License can be found at
+ * http://www.gnu.org/
+ *
+ * Written by Igor Pechtchanski <[EMAIL PROTECTED]>
+ *
+ */
+
+#ifndef _FILTERVISITOR_H_
+#define _FILTERVISITOR_H_
+
+#include "FindVisitor.h"
+#include "String++.h"
+
+/* For the wfd definition. See the TODO in find.cc */
+#include "win32.h"
+
+class Filter
+{
+public:
+ virtual bool matchFile(String const &basePath, WIN32_FIND_DATA const *);
+ virtual bool matchDirectory(String const &basePath, WIN32_FIND_DATA const *);
+ virtual ~ Filter();
+protected:
+ Filter();
+ Filter(Filter const &);
+ Filter & operator= (Filter const &);
+};
+
+class FilterVisitor : public FindVisitor
+{
+public:
+ virtual void visitFile(String const &basePath, WIN32_FIND_DATA const *);
+ virtual void visitDirectory(String const &basePath, WIN32_FIND_DATA const *);
+ FilterVisitor (FindVisitor *visitor, Filter *filter);
+ virtual ~ FilterVisitor ();
+protected:
+ FilterVisitor ();
+ FilterVisitor (FilterVisitor const &);
+ FilterVisitor & operator= (FilterVisitor const &);
+private:
+ FindVisitor *_visitor;
+ Filter *_filter;
+};
+
+class ExcludeNameFilter : public Filter
+{
+public:
+ ExcludeNameFilter (String const &filePattern, String const &dirPattern = "");
+ virtual ~ ExcludeNameFilter ();
+
+ virtual bool matchFile(String const &basePath, WIN32_FIND_DATA const *);
+ virtual bool matchDirectory(String const &basePath, WIN32_FIND_DATA const *);
+protected:
+ ExcludeNameFilter ();
+ ExcludeNameFilter (ExcludeNameFilter const &);
+ ExcludeNameFilter & operator= (ExcludeNameFilter const &);
+private:
+ class Glob
+ {
+ public:
+ Glob(String const &pattern) : _pattern(pattern) {}
+ bool match(String const &filename);
+ private:
+ String _pattern;
+ };
+
+ Glob _filePattern;
+ Glob _dirPattern;
+};
+
+#endif // _FILTERVISITOR_H_
Index: Makefile.am
===================================================================
RCS file: /cvs/cygwin-apps/setup/Makefile.am,v
retrieving revision 2.27
diff -u -p -r2.27 Makefile.am
--- Makefile.am 10 Mar 2003 15:47:53 -0000 2.27
+++ Makefile.am 17 Mar 2003 18:01:47 -0000
@@ -80,6 +80,8 @@ inilint_LDADD = libgetopt++/libgetopt++.
inilint_SOURCES = \
filemanip.cc \
filemanip.h \
+ FilterVisitor.cc \
+ FilterVisitor.h \
find.cc \
find.h \
FindVisitor.cc \
@@ -153,6 +155,8 @@ setup_SOURCES = \
find.h \
FindVisitor.cc \
FindVisitor.h \
+ FilterVisitor.cc \
+ FilterVisitor.h \
filemanip.cc \
filemanip.h \
fromcwd.cc \
Index: postinstall.cc
===================================================================
RCS file: /cvs/cygwin-apps/setup/postinstall.cc,v
retrieving revision 2.9
diff -u -p -r2.9 postinstall.cc
--- postinstall.cc 19 May 2002 03:07:51 -0000 2.9
+++ postinstall.cc 17 Mar 2003 18:01:51 -0000
@@ -26,6 +26,7 @@ static const char *cvsid =
#include "mount.h"
#include "script.h"
#include "FindVisitor.h"
+#include "FilterVisitor.h"
class RunFindVisitor : public FindVisitor
{
@@ -48,6 +49,8 @@ do_postinstall (HINSTANCE h, HWND owner)
init_run_script ();
SetCurrentDirectory (get_root_dir ().cstr_oneuse());
RunFindVisitor myVisitor;
+ ExcludeNameFilter notDone("*.done");
+ FilterVisitor excludeDoneVisitor(&myVisitor, ¬Done);
String postinst = cygpath ("/etc/postinstall");
- Find (postinst).accept (myVisitor);
+ Find (postinst).accept (excludeDoneVisitor);
}
