edit.md

Edit blocks in place

• using a terminal editor to edit blocks

@Add(global elements)
	void insert_before(const std::string &prefix,
		std::vector<std::string> &c
	) {
		@put(insert before);
	}
@End(global elements)

• function to interactively insert lines at the end of the container
• the prefix is the prompt that is printed

@Add(run loop)
	if (cmd == "l" || cmd == "list") {
		insert_before("l", curBlock->notes);
		continue;
	}
@End(run loop)

• the list or l command adds notes

@Add(run loop)
	if (cmd == "a" || cmd == "add") {
		std::string prefix;
		@put(find add prefix);
		insert_before(prefix, curBlock->value);
		continue;
	}
@End(run loop)

• the add or a command adds value lines

@def(find add prefix)
	switch (curBlock->state) {
		case RS::header:
			prefix = "h"; break;
		case RS::code:
			prefix = "c"; break;
		case RS::para:
			prefix = "p"; break;
		default:
			prefix = "?"; break;
	}
@end(find add prefix)

• one character prefix for the different block types

@def(insert before)
	int next = c.size();
	@Put(do str range);
	std::string l;
	for (;;) {
		@put(insert next line);
		break;
	}
	draw_block();
@end(insert before)

• insert strings at the end of the container

@def(insert next line)
	std::cout << prefix << ' ' << (next + 1) << "? ";
	std::getline(std::cin, l);
	auto b = l.begin();
	auto e = l.end();
	while (b != e && *b <= ' ') { ++b; }
	std::string t { b, e };
	if (t.empty()) { continue; }
	if (t == ".") { break; }
	c.insert(c.begin() + next, l);
	++next;
	continue;
@end(insert next line)

• read lines until a single . is read
• spaces at the beginning of the line are stripped

@Add(run loop)
	if (cmd == ">>") {
		if (curBlock->state == RS::header) {
			++curBlock->level;
			draw_block();
			continue;
		}
	}
@End(run loop)

• >> increases the level of a header

@Add(run loop)
	if (cmd == "<<") {
		if (curBlock->level > 1) {
			--curBlock->level;
			draw_block();
			continue;
		}
	}
@End(run loop)

• << decreases the level of a header