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Spreadsheet: Add support for importing from and exporting to CSV files

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Closes #4136.
This commit is contained in:
AnotherTest 2020-11-23 16:16:06 +03:30 • committed by Andreas Kling
parent 8066a623d9
commit 48d8534967
3 changed files with 125 additions and 43 deletions
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118
Applications/Spreadsheet/Workbook.cpp
View file

@ -26,12 +26,17 @@
#include "Workbook.h"
#include "JSIntegration.h"
#include "Readers/CSV.h"
#include "Writers/CSV.h"
#include <AK/ByteBuffer.h>
#include <AK/JsonArray.h>
#include <AK/JsonObject.h>
#include <AK/JsonObjectSerializer.h>
#include <AK/JsonParser.h>
#include <AK/Stream.h>
#include <LibCore/File.h>
#include <LibCore/FileStream.h>
#include <LibCore/MimeData.h>
#include <LibJS/Parser.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <string.h>
@ -77,42 +82,57 @@ Result<bool, String> Workbook::load(const StringView& filename)
return sb.to_string();
}
auto json_value_option = JsonParser(file_or_error.value()->read_all()).parse();
if (!json_value_option.has_value()) {
StringBuilder sb;
sb.append("Failed to parse ");
sb.append(filename);
auto mime = Core::guess_mime_type_based_on_filename(filename);
return sb.to_string();
}
if (mime == "text/csv") {
// FIXME: Prompt the user for settings.
NonnullRefPtrVector<Sheet> sheets;
auto& json_value = json_value_option.value();
if (!json_value.is_array()) {
StringBuilder sb;
sb.append("Did not find a spreadsheet in ");
sb.append(filename);
auto sheet = Sheet::from_xsv(Reader::CSV(file_or_error.value()->read_all(), Reader::default_behaviours() | Reader::ParserBehaviour::ReadHeaders), *this);
if (sheet)
sheets.append(sheet.release_nonnull());
return sb.to_string();
}
m_sheets.clear();
m_sheets = move(sheets);
} else {
// Assume JSON.
auto json_value_option = JsonParser(file_or_error.value()->read_all()).parse();
if (!json_value_option.has_value()) {
StringBuilder sb;
sb.append("Failed to parse ");
sb.append(filename);
NonnullRefPtrVector<Sheet> sheets;
return sb.to_string();
}
auto& json_value = json_value_option.value();
if (!json_value.is_array()) {
StringBuilder sb;
sb.append("Did not find a spreadsheet in ");
sb.append(filename);
return sb.to_string();
}
NonnullRefPtrVector<Sheet> sheets;
auto& json_array = json_value.as_array();
json_array.for_each([&](auto& sheet_json) {
if (!sheet_json.is_object())
return IterationDecision::Continue;
auto sheet = Sheet::from_json(sheet_json.as_object(), *this);
if (!sheet)
return IterationDecision::Continue;
sheets.append(sheet.release_nonnull());
auto& json_array = json_value.as_array();
json_array.for_each([&](auto& sheet_json) {
if (!sheet_json.is_object())
return IterationDecision::Continue;
});
auto sheet = Sheet::from_json(sheet_json.as_object(), *this);
if (!sheet)
return IterationDecision::Continue;
sheets.append(sheet.release_nonnull());
return IterationDecision::Continue;
});
m_sheets.clear();
m_sheets = move(sheets);
m_sheets.clear();
m_sheets = move(sheets);
}
set_filename(filename);
@ -121,13 +141,7 @@ Result<bool, String> Workbook::load(const StringView& filename)
Result<bool, String> Workbook::save(const StringView& filename)
{
JsonArray array;
for (auto& sheet : m_sheets)
array.append(sheet.to_json());
auto file_content = array.to_string();
auto mime = Core::guess_mime_type_based_on_filename(filename);
auto file = Core::File::construct(filename);
file->open(Core::IODevice::WriteOnly);
if (!file->is_open()) {
@ -140,14 +154,32 @@ Result<bool, String> Workbook::save(const StringView& filename)
return sb.to_string();
}
bool result = file->write(file_content);
if (!result) {
int error_number = errno;
StringBuilder sb;
sb.append("Unable to save file. Error: ");
sb.append(strerror(error_number));
if (mime == "text/csv") {
// FIXME: Prompt the user for settings and which sheet to export.
Core::OutputFileStream stream { file };
auto data = m_sheets[0].to_xsv();
auto header_string = data.take_first();
Vector<StringView> headers;
for (auto& str : header_string)
headers.append(str);
Writer::CSV csv { stream, data, headers };
if (csv.has_error())
return String::formatted("Unable to save file, CSV writer error: {}", csv.error_string());
} else {
JsonArray array;
for (auto& sheet : m_sheets)
array.append(sheet.to_json());
return sb.to_string();
auto file_content = array.to_string();
bool result = file->write(file_content);
if (!result) {
int error_number = errno;
StringBuilder sb;
sb.append("Unable to save file. Error: ");
sb.append(strerror(error_number));
return sb.to_string();
}
}
set_filename(filename);