xlnt/source/workbook.cpp
2014-07-16 19:53:45 -04:00

522 lines
13 KiB
C++

#include <algorithm>
#include <array>
#include <fstream>
#include <sstream>
#include <pugixml.hpp>
#ifdef _WIN32
#include <Windows.h>
#endif
#include "workbook/workbook.hpp"
#include "common/exceptions.hpp"
#include "drawing/drawing.hpp"
#include "worksheet/range.hpp"
#include "reader/reader.hpp"
#include "common/relationship.hpp"
#include "worksheet/worksheet.hpp"
#include "writer/writer.hpp"
#include "common/zip_file.hpp"
#include "detail/cell_impl.hpp"
#include "detail/workbook_impl.hpp"
#include "detail/worksheet_impl.hpp"
static std::string CreateTemporaryFilename()
{
#ifdef _WIN32
std::array<TCHAR, MAX_PATH> buffer;
DWORD result = GetTempPath(static_cast<DWORD>(buffer.size()), buffer.data());
if(result > MAX_PATH)
{
throw std::runtime_error("buffer is too small");
}
if(result == 0)
{
throw std::runtime_error("GetTempPath failed");
}
std::string directory(buffer.begin(), buffer.begin() + result);
return directory + "xlnt.xlsx";
#else
return "/tmp/xlsx.xlnt";
#endif
}
namespace xlnt {
namespace detail {
workbook_impl::workbook_impl() : active_sheet_index_(0), date_1904_(false)
{
}
} // namespace detail
workbook::workbook() : d_(new detail::workbook_impl())
{
create_sheet("Sheet");
}
workbook::~workbook()
{
clear();
}
workbook::iterator::iterator(workbook &wb, std::size_t index) : wb_(wb), index_(index)
{
}
workbook::iterator::iterator(const iterator &rhs) : wb_(rhs.wb_), index_(rhs.index_)
{
}
worksheet workbook::iterator::operator*()
{
return wb_[index_];
}
workbook::iterator &workbook::iterator::operator++()
{
index_++;
return *this;
}
workbook::iterator workbook::iterator::operator++(int)
{
iterator old(wb_, index_);
++*this;
return old;
}
bool workbook::iterator::operator==(const iterator &comparand) const
{
return index_ == comparand.index_ && wb_ == comparand.wb_;
}
workbook::const_iterator::const_iterator(const workbook &wb, std::size_t index) : wb_(wb), index_(index)
{
}
workbook::const_iterator::const_iterator(const const_iterator &rhs) : wb_(rhs.wb_), index_(rhs.index_)
{
}
const worksheet workbook::const_iterator::operator*()
{
return wb_.get_sheet_by_index(index_);
}
workbook::const_iterator &workbook::const_iterator::operator++()
{
index_++;
return *this;
}
workbook::const_iterator workbook::const_iterator::operator++(int)
{
const_iterator old(wb_, index_);
++*this;
return old;
}
bool workbook::const_iterator::operator==(const const_iterator &comparand) const
{
return index_ == comparand.index_ && wb_ == comparand.wb_;
}
worksheet workbook::get_sheet_by_name(const std::string &name)
{
for(auto &impl : d_->worksheets_)
{
if(impl.title_ == name)
{
return worksheet(&impl);
}
}
return worksheet();
}
worksheet workbook::get_sheet_by_index(std::size_t index)
{
return worksheet(&d_->worksheets_[index]);
}
const worksheet workbook::get_sheet_by_index(std::size_t index) const
{
return worksheet(&d_->worksheets_.at(index));
}
worksheet workbook::get_active_sheet()
{
return worksheet(&d_->worksheets_[d_->active_sheet_index_]);
}
bool workbook::has_named_range(const std::string &name) const
{
for(auto worksheet : *this)
{
if(worksheet.has_named_range(name))
{
return true;
}
}
return false;
}
worksheet workbook::create_sheet()
{
std::string title = "Sheet1";
int index = 1;
while(get_sheet_by_name(title) != nullptr)
{
title = "Sheet" + std::to_string(++index);
}
d_->worksheets_.push_back(detail::worksheet_impl(this, title));
return worksheet(&d_->worksheets_.back());
}
void workbook::add_sheet(xlnt::worksheet worksheet)
{
for(auto ws : *this)
{
if(worksheet == ws)
{
throw std::runtime_error("worksheet already in workbook");
}
}
d_->worksheets_.emplace_back(*worksheet.d_);
}
void workbook::add_sheet(xlnt::worksheet worksheet, std::size_t index)
{
add_sheet(worksheet);
std::swap(d_->worksheets_[index], d_->worksheets_.back());
}
int workbook::get_index(xlnt::worksheet worksheet)
{
int i = 0;
for(auto ws : *this)
{
if(worksheet == ws)
{
return i;
}
i++;
}
throw std::runtime_error("worksheet isn't owned by this workbook");
}
void workbook::create_named_range(const std::string &name, worksheet range_owner, const range_reference &reference)
{
auto match = get_sheet_by_name(range_owner.get_title());
if(match != nullptr)
{
match.create_named_range(name, reference);
return;
}
throw std::runtime_error("worksheet isn't owned by this workbook");
}
void workbook::remove_named_range(const std::string &name)
{
for(auto ws : *this)
{
if(ws.has_named_range(name))
{
ws.remove_named_range(name);
return;
}
}
throw std::runtime_error("named range not found");
}
range workbook::get_named_range(const std::string &name)
{
for(auto ws : *this)
{
if(ws.has_named_range(name))
{
return ws.get_named_range(name);
}
}
throw std::runtime_error("named range not found");
}
bool workbook::load(const std::istream &stream)
{
std::string temp_file = CreateTemporaryFilename();
std::ofstream tmp;
tmp.open(temp_file, std::ios::out | std::ios::binary);
tmp << stream.rdbuf();
tmp.close();
load(temp_file);
std::remove(temp_file.c_str());
return true;
}
bool workbook::load(const std::vector<unsigned char> &data)
{
std::string temp_file = CreateTemporaryFilename();
std::ofstream tmp;
tmp.open(temp_file, std::ios::out | std::ios::binary);
for(auto c : data)
{
tmp.put(c);
}
tmp.close();
load(temp_file);
std::remove(temp_file.c_str());
return true;
}
bool workbook::load(const std::string &filename)
{
zip_file f(filename, file_mode::open);
//auto core_properties = read_core_properties();
//auto app_properties = read_app_properties();
auto root_relationships = reader::read_relationships(f.get_file_contents("_rels/.rels"));
auto content_types = reader::read_content_types(f.get_file_contents("[Content_Types].xml"));
auto type = reader::determine_document_type(root_relationships, content_types.second);
if(type != "excel")
{
throw std::runtime_error("unsupported document type: " + filename);
}
auto workbook_relationships = reader::read_relationships(f.get_file_contents("xl/_rels/workbook.xml.rels"));
for(auto relationship : workbook_relationships)
{
create_relationship(relationship.first, relationship.second.first, relationship.second.second);
}
pugi::xml_document doc;
doc.load(f.get_file_contents("xl/workbook.xml").c_str());
auto root_node = doc.child("workbook");
auto workbook_pr_node = root_node.child("workbookPr");
d_->date_1904_ = workbook_pr_node.attribute("date1904") != nullptr && workbook_pr_node.attribute("date1904").as_int() != 0;
auto sheets_node = root_node.child("sheets");
clear();
std::vector<std::string> shared_strings;
if(f.has_file("xl/sharedStrings.xml"))
{
shared_strings = xlnt::reader::read_shared_string(f.get_file_contents("xl/sharedStrings.xml"));
}
pugi::xml_document styles_doc;
styles_doc.load(f.get_file_contents("xl/styles.xml").c_str());
auto stylesheet_node = styles_doc.child("styleSheet");
auto cell_xfs_node = stylesheet_node.child("cellXfs");
std::vector<int> number_format_ids;
for(auto xf_node : cell_xfs_node.children("xf"))
{
number_format_ids.push_back(xf_node.attribute("numFmtId").as_int());
}
for(auto sheet_node : sheets_node.children("sheet"))
{
std::string relation_id = sheet_node.attribute("r:id").as_string();
auto ws = create_sheet(sheet_node.attribute("name").as_string());
std::string sheet_filename("xl/");
sheet_filename += get_relationship(relation_id).get_target_uri();
xlnt::reader::read_worksheet(ws, f.get_file_contents(sheet_filename).c_str(), shared_strings, number_format_ids);
}
return true;
}
void workbook::create_relationship(const std::string &id, const std::string &target, const std::string &type)
{
d_->relationships_.push_back(relationship(type, id, target));
}
relationship workbook::get_relationship(const std::string &id) const
{
for(auto &rel : d_->relationships_)
{
if(rel.get_id() == id)
{
return rel;
}
}
throw std::runtime_error("");
}
int workbook::get_base_year() const
{
return d_->date_1904_ ? 1904 : 1900;
}
void workbook::remove_sheet(worksheet ws)
{
auto match_iter = std::find_if(d_->worksheets_.begin(), d_->worksheets_.end(), [=](detail::worksheet_impl &comp) { return worksheet(&comp) == ws; });
if(match_iter == d_->worksheets_.end())
{
throw std::runtime_error("worksheet not owned by this workbook");
}
d_->worksheets_.erase(match_iter);
}
worksheet workbook::create_sheet(std::size_t index)
{
create_sheet();
if(index != d_->worksheets_.size())
{
std::swap(d_->worksheets_[index], d_->worksheets_.back());
}
return worksheet(&d_->worksheets_[index]);
}
worksheet workbook::create_sheet(std::size_t index, const std::string &title)
{
auto ws = create_sheet(index);
ws.set_title(title);
return ws;
}
worksheet workbook::create_sheet(const std::string &title)
{
if(title.length() > 31)
{
throw sheet_title_exception(title);
}
if(std::find_if(title.begin(), title.end(),
[](char c) { return c == '*' || c == ':' || c == '/' || c == '\\' || c == '?' || c == '[' || c == ']'; }) != title.end())
{
throw sheet_title_exception(title);
}
if(std::find_if(d_->worksheets_.begin(), d_->worksheets_.end(), [&](detail::worksheet_impl &ws) { return worksheet(&ws).get_title() == title; }) != d_->worksheets_.end())
{
throw std::runtime_error("sheet exists");
}
auto ws = create_sheet();
ws.set_title(title);
return ws;
}
workbook::iterator workbook::begin()
{
return iterator(*this, 0);
}
workbook::iterator workbook::end()
{
return iterator(*this, d_->worksheets_.size());
}
workbook::const_iterator workbook::cbegin() const
{
return const_iterator(*this, 0);
}
workbook::const_iterator workbook::cend() const
{
return const_iterator(*this, d_->worksheets_.size());
}
std::vector<std::string> workbook::get_sheet_names() const
{
std::vector<std::string> names;
for(auto ws : *this)
{
names.push_back(ws.get_title());
}
return names;
}
worksheet workbook::operator[](const std::string &name)
{
return get_sheet_by_name(name);
}
worksheet workbook::operator[](std::size_t index)
{
return worksheet(&d_->worksheets_[index]);
}
void workbook::clear()
{
d_->worksheets_.clear();
}
bool workbook::save(std::vector<unsigned char> &data)
{
auto temp_file = CreateTemporaryFilename();
save(temp_file);
std::ifstream tmp;
tmp.open(temp_file, std::ios::in | std::ios::binary);
auto char_data = std::vector<char>((std::istreambuf_iterator<char>(tmp)),
std::istreambuf_iterator<char>());
data = std::vector<unsigned char>(char_data.begin(), char_data.end());
tmp.close();
std::remove(temp_file.c_str());
return true;
}
bool workbook::save(const std::string &filename)
{
zip_file f(filename, file_mode::create, file_access::write);
f.set_file_contents("[Content_Types].xml", writer::write_content_types(*this));
f.set_file_contents("_rels/.rels", writer::write_root_rels());
f.set_file_contents("xl/_rels/workbook.xml.rels", writer::write_workbook_rels(*this));
f.set_file_contents("xl/workbook.xml", writer::write_workbook(*this));
return true;
}
bool workbook::operator==(const workbook &rhs) const
{
return d_.get() == rhs.d_.get();
}
std::vector<relationship> xlnt::workbook::get_relationships() const
{
return d_->relationships_;
}
std::vector<content_type> xlnt::workbook::get_content_types() const
{
std::vector<content_type> content_types;
content_types.push_back({ true, "xml", "", "application/xml" });
content_types.push_back({ true, "rels", "", "application/vnd.openxmlformats-package.relationships+xml" });
content_types.push_back({ false, "", "xl/workbook.xml", "applications/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml" });
return content_types;
}
}