lifegpc/eh_downloader_flutter
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Add file handling functionality

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lifegpc
2023-12-26 18:22:45 +08:00
parent 76288e85ed
commit 7b7dae2286
1 changed files with 74 additions and 0 deletions
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74
linux/my_application.cc
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@@ -5,6 +5,8 @@
#include <gdk/gdkx.h>
#endif
#include <fcntl.h>
#include "flutter/generated_plugin_registrant.h"
struct _MyApplication {
@@ -130,6 +132,78 @@ static void on_saf_channel_call(FlMethodChannel* channel, FlMethodCall* method_c
fl_method_call_respond_error(method_call, "USER_CANCELED", "User canceled", nullptr, nullptr);
}
gtk_widget_destroy(dialog);
} else if (g_strcmp0(method, "openFile") == 0) {
auto args = fl_method_call_get_args(method_call);
auto fileName = fl_value_get_string(fl_value_get_list_value(args, 0));
auto dir = fl_value_get_string(fl_value_get_list_value(args, 1));
auto mimeType = fl_value_get_string(fl_value_get_list_value(args, 2));
if (!fileName || !dir || !mimeType) {
fl_method_call_respond_error(method_call, "INVALID_ARGUMENTS", "Invalid arguments", nullptr, nullptr);
return;
}
auto dialog = gtk_file_chooser_dialog_new("Save File", nullptr, GTK_FILE_CHOOSER_ACTION_SAVE,
"_Cancel", GTK_RESPONSE_CANCEL,
"_Save", GTK_RESPONSE_ACCEPT,
nullptr);
gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(dialog), TRUE);
auto ext = get_ext_from_mime_type(mimeType);
if (ext) {
auto gstr = g_string_new(fileName);
g_string_append(gstr, ext);
gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(dialog), gstr->str);
g_string_free(gstr, TRUE);
} else {
gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(dialog), fileName);
}
gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(dialog), dir);
auto filter = gtk_file_filter_new();
gtk_file_filter_add_mime_type(filter, mimeType);
gtk_file_filter_set_name(filter, get_filter_name_from_mime_type(mimeType));
gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), filter);
filter = gtk_file_filter_new();
gtk_file_filter_add_pattern(filter, "*");
gtk_file_filter_set_name(filter, "All files");
gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), filter);
auto res = gtk_dialog_run(GTK_DIALOG(dialog));
if (res == GTK_RESPONSE_ACCEPT) {
auto filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog));
int fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd != -1) {
fl_method_call_respond_success(method_call, fl_value_new_int(fd), nullptr);
} else {
fl_method_call_respond_error(method_call, "OPEN_FILE_ERROR", g_strerror(errno), nullptr, nullptr);
}
} else {
fl_method_call_respond_error(method_call, "USER_CANCELED", "User canceled", nullptr, nullptr);
}
gtk_widget_destroy(dialog);
} else if (g_strcmp0(method, "writeFile") == 0) {
auto args = fl_method_call_get_args(method_call);
auto fd = fl_value_get_int(fl_value_get_list_value(args, 0));
auto odata = fl_value_get_list_value(args, 1);
auto data = fl_value_get_uint8_list(odata);
auto dataLen = fl_value_get_length(odata);
if (!data) {
fl_method_call_respond_error(method_call, "INVALID_ARGUMENTS", "Invalid arguments", nullptr, nullptr);
return;
}
auto count = write(fd, data, dataLen);
if (count != (ssize_t)-1) {
fl_method_call_respond_success(method_call, fl_value_new_int(count), nullptr);
} else {
fl_method_call_respond_error(method_call, "WRITE_FILE_ERROR", g_strerror(errno), nullptr, nullptr);
}
} else if (g_strcmp0(method, "closeFile") == 0) {
auto args = fl_method_call_get_args(method_call);
auto fd = fl_value_get_int(fl_value_get_list_value(args, 0));
int err = close(fd);
if (!err) {
fl_method_call_respond_success(method_call, nullptr, nullptr);
} else {
fl_method_call_respond_error(method_call, "CLOSE_FILE_ERROR", g_strerror(errno), nullptr, nullptr);
}
} else {
fl_method_call_respond_not_implemented(method_call, nullptr);
}
}