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format::desktop_entry: Add desktop entry file parsing

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Sasha Koshka 2024-10-22 01:10:05 -04:00
parent 4f1b87181d
commit 0362ae4515
1 changed files with 189 additions and 0 deletions
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format/desktop_entry/desktop_entry.ha Normal file
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use locale;
use strings;
// The information from a desktop entry file.
export type file = struct {
typ: str,
version: str,
name: locale::string,
generic_name: locale::string,
no_display: bool,
comment: locale::string,
icon: locale::string,
hidden: bool,
only_show_in: []str,
not_show_in: []str,
dbus_activatable: bool,
try_exec: str,
exec: str,
path: str,
terminal: bool,
actions: []str,
mime_type: []str,
categories: []str,
implements: []str,
keywords: locale::strings,
startup_notify: bool,
startup_wm_class: str,
url: str,
prefers_non_default_gpu: bool,
single_main_window: bool,
};
// Parses a desktop entry file. Use [[file_finish]] to get rid of it.
export fn parse(input: io::handle) (file | error) = {
let state = parse_state { ... };
let scanne = scan(input);
defer finish(&scanne);
for (let entr => next_entry(&scanne)) {
match(parse_handle_entry(entr)) {
case let err: error =>
file_finish(&state.file);
return err;
case void => void;
};
};
};
// Frees resources associated with a [[file]].
export fn file_finish(file: &file) void = {
free(file.typ);
free(file.version);
locale_string_finish(file.name);
locale_string_finish(file.generic_name);
locale_string_finish(file.comment);
locale_string_finish(file.icon);
strings::freeall(file.only_show_in);
strings::freeall(file.not_show_in);
free(file.try_exec);
free(file.exec);
free(file.path);
strings::freeall(file.actions);
strings::freeall(file.mime_type);
strings::freeall(file.categories);
strings::freeall(file.implements);
locale_strings_finish(file.keywords);
free(file.startup_wm_class);
free(file.url);
};
type parse_state = struct {
file: file,
};
fn parse_handle_entry(this: *parse_state, entr: entry) (void | error) = {
if (entr.group != "Desktop Entry") return void;
if (entr.key == "Type") {
if parse_is_localized(entr) return void;
this.typ = parse_string(entr.value)?;
} else if (entr.key == "Version") {
if parse_is_localized(entr) return void;
this.version = parse_string(entr.value)?;
} else if (entr.key == "Name") {
parse_set_locale_string(
*this.name, entr.locale,
parse_localestring(entr.value)?)?;
} else if (entr.key == "GenericName") {
parse_set_locale_string(
*this.generic_name, entr.locale,
parse_localestring(entr.value)?)?;
} else if (entr.key == "NoDisplay") {
if parse_is_localized(entr) return void;
this.no_display = parse_boolean(entr.value)?;
} else if (entr.key == "Comment") {
parse_set_locale_string(
*this.comment, entr.locale,
parse_localestring(entr.value)?)?;
} else if (entr.key == "Icon") {
parse_set_locale_string(
*this.icon, entr.locale,
parse_iconstring(entr.value)?)?;
} else if (entr.key == "Hidden") {
if parse_is_localized(entr) return void;
this.hidden = parse_boolean(entr.value)?;
} else if (entr.key == "OnlyShowIn") {
if parse_is_localized(entr) return void;
this.only_show_in = parse_strings(entr.value)?;
} else if (entr.key == "NotShowIn") {
if parse_is_localized(entr) return void;
this.not_show_in = parse_strings(entr.value)?;
} else if (entr.key == "DBusActivatable") {
if parse_is_localized(entr) return void;
this.dbus_activatable = parse_bool(entr.value)?;
} else if (entr.key == "TryExec") {
if parse_is_localized(entr) return void;
this.try_exec = parse_string(entr.value)?;
} else if (entr.key == "Path") {
if parse_is_localized(entr) return void;
this.path = parse_string(entr.value)?;
} else if (entr.key == "Terminal") {
if parse_is_localized(entr) return void;
this.terminal = parse_boolean(entr.value)?;
} else if (entr.key == "Actions") {
if parse_is_localized(entr) return void;
this.actions = parse_strings(entr.value)?;
} else if (entr.key == "MimeType") {
if parse_is_localized(entr) return void;
this.mime_type = parse_strings(entr.value)?;
} else if (entr.key == "Categories") {
if parse_is_localized(entr) return void;
this.categories = parse_strings(entr.value)?;
} else if (entr.key == "Implements") {
if parse_is_localized(entr) return void;
this.implements = parse_strings(entr.value)?;
} else if (entr.key == "Keywords") {
parse_set_locale_strings(
*this.keywords, entr.locale,
parse_localestring(entr.value)?)?;
} else if (entr.key == "StartupWMClass") {
if parse_is_localized(entr) return void;
this.startup_wm_class = parse_string(entr.value)?;
} else if (entr.key == "URL") {
if parse_is_localized(entr) return void;
this.url = parse_string(entr.value)?;
} else if (entr.key == "PrefersNonDefaultGPU") {
if parse_is_localized(entr) return void;
this.prefers_non_default_gpu = parse_bool(entr.value)?;
} else if (entr.key == "SingleMainWindow") {
if parse_is_localized(entr) return void;
this.single_main_window = parse_bool(entr.value)?;
};
};
fn parse_is_localized(entr: entry) bool = {
return !locale::equal(entr.locale, locale::c);
};
fn parse_set_locale_string(dest *locale::string, local: locale::locale, value: str) void = {
for (let existing &.. *dest) {
if (locale::equal(existing.0, locale)) {
existing.1 = value;
return;
};
};
append(*dest, (locale::dup(local), strings::dup(value)));
};
fn parse_set_locale_strings(dest *locale::strings, local: locale::locale, value: []str) void = {
for (let existing &.. *dest) {
if (locale::equal(existing.0, locale)) {
existing.1 = value;
return;
};
};
append(*dest, (locale::dup(local), strings::dupall(value)));
};
fn locale_string_finish(string: locale::string) void = {
for (let pair .. string) {
locale::finish(pair.0);
free(pair.1);
};
free(string);
};
fn locale_strings_finish(strings: locale::strings) void = {
for (string .. strings) locale_string_finish(string);
};