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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
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Makefile 0 → 100644
+ 62
− 0
View file @ 97a61b94
override CPPFLAGS += --std=c++1z
override CPPFLAGS += -MMD -MP
override CPPFLAGS += $(shell cat .cxxflags | xargs)
PREFIX := $(DESTDIR)/usr/local
BINDIR := $(PREFIX)/bin
SOURCES := $(shell echo *.cpp)
TEMPDIR := temp
DISTDIR := out
OUT := $(SOURCES:%.cpp=$(DISTDIR)/f%)
TARGET := $(OUT:$(DISTDIR)/%=$(BINDIR)/%)
OBJECTS := $(SOURCES:%.cpp=$(TEMPDIR)/%.o)
DEPENDS := $(OBJECTS:.o=.d)
build: $(OUT)
test: build
./tests/basic.sh
$(DISTDIR)/f%: $(TEMPDIR)/%.o | $(DISTDIR)
$(CXX) $(LDFLAGS) $< $(LDLIBS) -o $@
$(TEMPDIR)/%.o: %.cpp | $(TEMPDIR)
$(CXX) $(CPPFLAGS) $(CXXFLAGS) -o $@ -c $<
$(TEMPDIR):
@mkdir $@
$(DISTDIR):
@mkdir $@
clean:
@rm $(DEPENDS) 2> /dev/null || true
@rm $(OBJECTS) 2> /dev/null || true
@rmdir $(TEMPDIR) 2> /dev/null || true
@echo Temporaries cleaned!
distclean: clean
@rm $(OUT) 2> /dev/null || true
@rmdir $(DISTDIR) 2> /dev/null || true
@echo All clean!
install: $(TARGET)
@echo Install complete!
$(BINDIR)/%: $(DISTDIR)/% | $(BINDIR)
install --strip $< $@
$(BINDIR):
@mkdir $@
uninstall:
-rm $(TARGET)
@rmdir $(BINDIR) 2> /dev/null || true
@echo Uninstall complete!
-include $(DEPENDS)
.PRECIOUS : $(OBJECTS)
.PHONY : test build clean distclean uninstall
glue.cpp 0 → 100644
+ 52
− 0
View file @ 97a61b94
#include <iostream>
#include "simple/file.hpp"
using namespace std;
using namespace simple;
using namespace file::operators;
void glue(string path)
{
auto info = file::ropex(path);
file::string_stack::pop(path);
string name;
getline(info, name);
file::size_type expected_size;
info >> expected_size;
info.ignore();
auto output = file::bwopex(path + name);
string piece;
while(info.peek()|1 && !info.eof() && getline(info, piece))
output <<= file::bropex(path + piece);
auto diff = file::size(output) - expected_size;
if(diff)
cerr << "Output size differs from expected by " << diff << '\n';
}
void process_arguments(int argc, char const * argv[])
{
for(int i = 1; i < argc; ++i)
glue(argv[i]);
}
void process_input()
{
string target;
while(getline(cin, target))
glue(target);
}
int main(int argc, char const * argv[])
{
if(argc < 2)
process_input();
else
process_arguments(argc, argv);
return 0;
}
shred.cpp 0 → 100644
+ 162
− 0
View file @ 97a61b94
#include <iostream>
#include <sstream>
#include <string>
#include <deque>
#include <map>
#include <functional>
#include <algorithm>
#include "simple/file.hpp"
#include "simple/enum.hpp"
using namespace std;
using namespace std::literals;
using namespace simple;
using namespace file::operators;
using file::string_stack::pop;
using file::string_stack::drop;
using file::string_stack::push;
using string_stack = file::string_stack::manipulator<>;
static const string info_ext = "info"s;
static const string piece_ext = "piece"s;
static const string ext_delim = "."s;
static constexpr file::size_type default_piece_size = 256 * 1024;
struct _option_guts
{
enum class Type
{
PieceSize,
Terminator,
Invalid
};
static constexpr Type Default = Type::Invalid;
static Type from(string name)
{
static const map<string, Type> stringToOption
{
{ "-s"s, Type::PieceSize },
{ "-f"s, Type::Terminator }
};
auto found = stringToOption.find(name);
return found != stringToOption.end() ? found->second : Type::Invalid;
};
};
using Option = Enum<_option_guts>;
using Options = Option::Type;
string to_hex_string(int n)
{
stringstream s;
s << hex << n;
return s.str();
}
// why use bind when got lambdas? hmm?
using namespace placeholders;
auto popext = bind(pop<>, _1, ext_delim);
auto pushext = bind(push<>, _1, _2, ext_delim);
auto dropext = bind(drop<>, _1, ext_delim);
// // well there are your lambdas... like em?
// auto popext = [&](auto& _1){ return pop(_1, ext_delim); };
// auto pushext = [&](auto& _1, auto& _2){ push(_1, _2, ext_delim); };
// auto dropext = [&](auto& _1){ drop(_1, ext_delim); };
void shred(string path, file::size_type piece_size = default_piece_size)
{
auto victim = file::bropex(path);
auto victim_size = file::size(victim);
string name = pop(path);
string ext = popext(name); // TODO: separating the extension is ugly and problematic
if(name.empty())
swap(name, ext);
push(path, name);
pushext(path, info_ext);
auto info = file::wopex(path);
drop(path);
{ auto extension = string_stack(name, ext_delim).push(ext);
info << name << '\n'
<< victim_size << '\n';
}
file::buffer<> piece;
for(int i = 1; victim_size; ++i, victim_size -= piece.size())
{
auto name_stack = string_stack(name, ext_delim).push(to_hex_string(i), piece_ext);
auto path_stack = string_stack(path).push(name);
piece.resize(min(victim_size, piece_size));
victim.read(piece.data(), piece.size());
file::bwopex(path) <<= piece;
info << name << '\n';
}
}
void process_arguments(deque<string> args)
{
args.pop_front();
auto piece_size = default_piece_size;
Option option;
while(!args.empty())
{
option = Option(args.front());
switch(option)
{
case Options::PieceSize:
args.pop_front();
if(args.empty())
return;
piece_size = stoull(args.front(), nullptr, 0);
break;
case Options::Terminator:
args.pop_front();
for(auto& arg : args)
shred(arg, piece_size);
return;
default:
shred(args.front(), piece_size);
break;
}
args.pop_front();
}
}
void process_input()
{
auto piece_size = default_piece_size;
string input;
while(getline(cin, input))
{
piece_size = std::strtoull(input.c_str(), nullptr, 0);
piece_size = piece_size ? piece_size : default_piece_size;
while(getline(cin, input) && !input.empty())
shred(input, piece_size);
}
}
int main(int argc, char const * argv[])
{
process_arguments( {argv, argv + argc} );
if(argc < 2)
process_input();
return 0;
}
swap.cpp 0 → 100644
+ 33
− 0
View file @ 97a61b94
#include <iostream>
#include "simple/file.hpp"
using namespace simple;
using namespace simple::file::operators;
void swap(const std::string& onePath, const std::string& otherPath)
{
if(onePath == otherPath)
return;
auto one = file::dump(file::bropex(onePath));
auto other = file::dump(file::bropex(otherPath));
file::bwopex(onePath) <<= other;
file::bwopex(otherPath) <<= one;
}
int main(int argc, char const* argv[])
{
if(argc < 3)
{
std::cout << "Expecting two arguments, got " << argc - 1 << '\n';
return -1;
}
if(argc > 3)
std::cout << "Ignoring all arguments after the first 2" << '\n';
swap(argv[1], argv[2]);
return 0;
}
tests/basic.sh 0 → 100755
+ 33
− 0
View file @ 97a61b94
#!/bin/sh
OnExit()
{
trap "trap - TERM && $*" INT TERM EXIT
}
tempdir=$(mktemp -d)
OnExit "rm -rf $tempdir"
echo
echo Testing in $tempdir
testfile="$tempdir/test.file"
original="$tempdir/original.file"
echo 1234567890abcdefghijklmnopqrstuvwxyz > "$testfile"
out/fshred -s 3 "$testfile"
mv "$testfile" "$original"
out/fglue "$tempdir/test.info"
echo
echo glued file:
cut -c1-200 "$testfile"
echo
echo original file:
cut -c1-200 "$original"
echo
echo difference:
diff "$testfile" "$original"
echo
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