neurocyte/flow
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feat: preserve paragraphs when reflowing

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This commit is contained in:
CJ van den Berg 2026-02-06 14:40:28 +01:00
parent c0107e32e0
commit da8677357f
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
1 changed files with 14 additions and 1 deletions
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15
src/buffer/reflow.zig
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@ -35,6 +35,12 @@ pub fn reflow(allocator: std.mem.Allocator, text: []const u8, width: usize) erro
continue :blk .words; continue :blk .words;
}, },
.words => { .words => {
if (word.len == 1 and word[0] == '\n') {
try writer.writeByte('\n');
try writer.writeByte('\n');
line_len = 0;
continue;
}
if (line_len > prefix.len) { if (line_len > prefix.len) {
if (line_len + word.len + 1 >= width) { if (line_len + word.len + 1 >= width) {
try writer.writeByte('\n'); try writer.writeByte('\n');
@ -56,8 +62,15 @@ pub fn reflow(allocator: std.mem.Allocator, text: []const u8, width: usize) erro
fn split_words(allocator: std.mem.Allocator, text: []const u8, prefix: usize) error{OutOfMemory}![]const []const u8 { fn split_words(allocator: std.mem.Allocator, text: []const u8, prefix: usize) error{OutOfMemory}![]const []const u8 {
var words: std.ArrayList([]const u8) = .empty; var words: std.ArrayList([]const u8) = .empty;
var lines = std.mem.splitScalar(u8, text, '\n'); var lines = std.mem.splitScalar(u8, text, '\n');
var blank = false;
while (lines.next()) |line| { while (lines.next()) |line| {
if (line.len <= prefix) continue; if (line.len <= prefix) {
if (!blank)
(try words.addOne(allocator)).* = "\n";
blank = true;
continue;
}
blank = false;
var it = std.mem.splitAny(u8, line[prefix..], " \t"); var it = std.mem.splitAny(u8, line[prefix..], " \t");
while (it.next()) |word| if (word.len > 0) { while (it.next()) |word| if (word.len > 0) {
(try words.addOne(allocator)).* = word; (try words.addOne(allocator)).* = word;