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fix(api): dynamically allocate line buffer for nvim_out_write (#20537)

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zeertzjq 2022-10-08 20:10:00 +08:00 committed by GitHub
parent 0773a9ee3a
commit 2a12faaec1
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 37 additions and 12 deletions
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26
src/nvim/api/vim.c
View File

@ -66,7 +66,7 @@
#include "nvim/viml/parser/parser.h"
#include "nvim/window.h"
#define LINE_BUFFER_SIZE 4096
#define LINE_BUFFER_MIN_SIZE 4096
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "api/vim.c.generated.h"
@ -1718,17 +1718,21 @@ theend:
/// @param to_err true: message is an error (uses `emsg` instead of `msg`)
static void write_msg(String message, bool to_err)
{
static size_t out_pos = 0, err_pos = 0;
static char out_line_buf[LINE_BUFFER_SIZE], err_line_buf[LINE_BUFFER_SIZE];
static StringBuilder out_line_buf = KV_INITIAL_VALUE;
static StringBuilder err_line_buf = KV_INITIAL_VALUE;
#define PUSH_CHAR(i, pos, line_buf, msg) \
if (message.data[i] == NL || (pos) == LINE_BUFFER_SIZE - 1) { \
(line_buf)[pos] = NUL; \
msg(line_buf); \
(pos) = 0; \
#define PUSH_CHAR(i, line_buf, msg) \
if (kv_max(line_buf) == 0) { \
kv_resize(line_buf, LINE_BUFFER_MIN_SIZE); \
} \
if (message.data[i] == NL) { \
kv_push(line_buf, NUL); \
msg(line_buf.items); \
kv_drop(line_buf, kv_size(line_buf)); \
kv_resize(line_buf, LINE_BUFFER_MIN_SIZE); \
continue; \
} \
(line_buf)[(pos)++] = message.data[i];
kv_push(line_buf, message.data[i]);
no_wait_return++;
for (uint32_t i = 0; i < message.size; i++) {
@ -1736,9 +1740,9 @@ static void write_msg(String message, bool to_err)
break;
}
if (to_err) {
PUSH_CHAR(i, err_pos, err_line_buf, emsg);
PUSH_CHAR(i, err_line_buf, emsg);
} else {
PUSH_CHAR(i, out_pos, out_line_buf, msg);
PUSH_CHAR(i, out_line_buf, msg);
}
}
no_wait_return--;

23
test/functional/api/vim_spec.lua
View File

@ -1905,11 +1905,32 @@ describe('API', function()
end)
end)
describe('nvim_out_write', function()
it('prints long messages correctly #20534', function()
exec([[
set more
redir => g:out
silent! call nvim_out_write('a')
silent! call nvim_out_write('a')
silent! call nvim_out_write('a')
silent! call nvim_out_write("\n")
silent! call nvim_out_write('a')
silent! call nvim_out_write('a')
silent! call nvim_out_write(repeat('a', 5000) .. "\n")
silent! call nvim_out_write('a')
silent! call nvim_out_write('a')
silent! call nvim_out_write('a')
silent! call nvim_out_write("\n")
redir END
]])
eq('\naaa\n' .. ('a'):rep(5002) .. '\naaa', meths.get_var('out'))
end)
end)
describe('nvim_err_write', function()
local screen
before_each(function()
clear()
screen = Screen.new(40, 8)
screen:attach()
screen:set_default_attr_ids({