67 lines
1.9 KiB
Zig
67 lines
1.9 KiB
Zig
bytes: []const u8,
|
|
|
|
pub const SectionIterator = struct {
|
|
ini: Ini,
|
|
next_index: ?usize,
|
|
header: []const u8,
|
|
|
|
pub fn next(it: *SectionIterator) ?[]const u8 {
|
|
const bytes = it.ini.bytes;
|
|
const start = it.next_index orelse return null;
|
|
const end = mem.indexOfPos(u8, bytes, start, "\n[") orelse bytes.len;
|
|
const result = bytes[start..end];
|
|
if (mem.indexOfPos(u8, bytes, start, it.header)) |next_index| {
|
|
it.next_index = next_index + it.header.len;
|
|
} else {
|
|
it.next_index = null;
|
|
}
|
|
return result;
|
|
}
|
|
};
|
|
|
|
/// Asserts that `header` includes "\n[" at the beginning and "]\n" at the end.
|
|
/// `header` must remain valid for the lifetime of the iterator.
|
|
pub fn iterateSection(ini: Ini, header: []const u8) SectionIterator {
|
|
assert(mem.startsWith(u8, header, "\n["));
|
|
assert(mem.endsWith(u8, header, "]\n"));
|
|
const first_header = header[1..];
|
|
const next_index = if (mem.indexOf(u8, ini.bytes, first_header)) |i|
|
|
i + first_header.len
|
|
else
|
|
null;
|
|
return .{
|
|
.ini = ini,
|
|
.next_index = next_index,
|
|
.header = header,
|
|
};
|
|
}
|
|
|
|
const std = @import("std.zig");
|
|
const mem = std.mem;
|
|
const assert = std.debug.assert;
|
|
const Ini = @This();
|
|
const testing = std.testing;
|
|
|
|
test iterateSection {
|
|
const example =
|
|
\\[package]
|
|
\\name=libffmpeg
|
|
\\version=5.1.2
|
|
\\
|
|
\\[dependency]
|
|
\\id=libz
|
|
\\url=url1
|
|
\\
|
|
\\[dependency]
|
|
\\id=libmp3lame
|
|
\\url=url2
|
|
;
|
|
var ini: Ini = .{ .bytes = example };
|
|
var it = ini.iterateSection("\n[dependency]\n");
|
|
const section1 = it.next() orelse return error.TestFailed;
|
|
try testing.expectEqualStrings("id=libz\nurl=url1\n", section1);
|
|
const section2 = it.next() orelse return error.TestFailed;
|
|
try testing.expectEqualStrings("id=libmp3lame\nurl=url2", section2);
|
|
try testing.expect(it.next() == null);
|
|
}
|