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// TODO: Change this to proper TOML in the future :)
const es = @import("root");
const std = @import("std");
const Allocator = std.mem.Allocator;
const BufMap = std.BufMap;
const Config = @This();
const config_path = "arkta/es/es.ini";
hard_tabs: bool = es.conf.default_hard_tabs,
line_limit: usize = es.conf.default_line_limit,
page_overlap: usize = es.conf.default_page_overlap,
tab_stop: usize = es.conf.default_tab_stop,
pub fn readConfig(allocator: Allocator) !Config {
var config = Config{};
var env_map = try std.process.getEnvMap(allocator);
defer env_map.deinit();
if (env_map.get("XDG_CONFIG_DIRS")) |base_dirs| {
var it = std.mem.split(u8, base_dirs, ":");
while (it.next()) |base_dir| {
try readConfigInBaseDir(allocator, &config, base_dir);
}
} else {
try readConfigInBaseDir(allocator, &config, "/etc/xdg");
}
if (env_map.get("XDG_CONFIG_HOME")) |base_dir| {
try readConfigInBaseDir(allocator, &config, base_dir);
} else if (env_map.get("HOME")) |home| {
const home_config = try std.fs.path.join(allocator, &.{ home, ".config" });
defer allocator.free(home_config);
try readConfigInBaseDir(allocator, &config, home_config);
} else {
std.log.err("No $HOME environment variable available!", .{});
}
return config;
}
fn parseBool(str: []const u8) !bool {
if (std.mem.eql(u8, str, "true")) {
return true;
} else if (std.mem.eql(u8, str, "false")) {
return false;
} else {
std.log.err("How to interpret '{s}' as a bool?", .{str});
return error.MalformedConfig;
}
}
fn readConfigInBaseDir(allocator: Allocator, config: *Config, base_dir: []const u8) !void {
const filename = try std.fs.path.join(allocator, &.{ base_dir, config_path });
defer allocator.free(filename);
const file = std.fs.openFileAbsolute(filename, .{ .mode = .read_only }) catch |err| switch (err) {
error.FileNotFound => return,
else => return err,
};
defer file.close();
const reader = file.reader();
while (try reader.readUntilDelimiterOrEofAlloc(allocator, '\n', 4096)) |line_buf| {
defer allocator.free(line_buf);
var line = std.mem.trim(u8, line_buf, &std.ascii.spaces);
if (line.len == 0 or line[0] == '#') {
continue;
}
const split = if (std.mem.indexOfScalar(u8, line, '=')) |idx| idx else {
return error.MalformedConfig;
};
const key = std.mem.trimRight(u8, line[0..split], &std.ascii.spaces);
const value = std.mem.trimLeft(u8, line[(split + 1)..], &std.ascii.spaces);
if (std.mem.eql(u8, key, "hard-tabs")) {
config.hard_tabs = try parseBool(value);
} else if (std.mem.eql(u8, key, "line-limit")) {
config.line_limit = try std.fmt.parseUnsigned(usize, value, 0);
} else if (std.mem.eql(u8, key, "page-overlap")) {
config.page_overlap = try std.fmt.parseUnsigned(usize, value, 0);
} else if (std.mem.eql(u8, key, "tab-stop")) {
config.tab_stop = try std.fmt.parseUnsigned(usize, value, 0);
}
// TODO: else ??
}
}
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