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win: Fix reading from stdin

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* Reading from stdin on Windows is fixed in the same way as it was in
  #8267.
* The file_read function was returning without filling the
  destination buffer when it was called with a non-blocking file
  descriptor.
This commit is contained in:
b-r-o-c-k 2018-04-14 14:21:36 -05:00
parent ad999eaa77
commit 387fbcd95c
3 changed files with 16 additions and 6 deletions
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11
src/nvim/main.c
View File

@ -1096,6 +1096,17 @@ scripterror:
int error;
if (STRCMP(argv[0], "-") == 0) {
const int stdin_dup_fd = os_dup(STDIN_FILENO);
#ifdef WIN32
// On Windows, replace the original stdin with the
// console input handle.
close(STDIN_FILENO);
const HANDLE conin_handle =
CreateFile("CONIN$", GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ, (LPSECURITY_ATTRIBUTES)NULL,
OPEN_EXISTING, 0, (HANDLE)NULL);
const int conin_fd = _open_osfhandle(conin_handle, _O_RDONLY);
assert(conin_fd == STDIN_FILENO);
#endif
FileDescriptor *const stdin_dup = file_open_fd_new(
&error, stdin_dup_fd, kFileReadOnly|kFileNonBlocking);
assert(stdin_dup != NULL);

10
src/nvim/os/fileio.c
View File

@ -282,6 +282,7 @@ ptrdiff_t file_read(FileDescriptor *const fp, char *const ret_buf,
char *buf = ret_buf;
size_t read_remaining = size;
RBuffer *const rv = fp->rv;
bool called_read = false;
while (read_remaining) {
const size_t rv_size = rbuffer_size(rv);
if (rv_size > 0) {
@ -289,7 +290,9 @@ ptrdiff_t file_read(FileDescriptor *const fp, char *const ret_buf,
buf += rsize;
read_remaining -= rsize;
}
if (fp->eof) {
if (fp->eof
// Allow only at most one os_read[v] call.
|| (called_read && fp->non_blocking)) {
break;
}
if (read_remaining) {
@ -343,10 +346,7 @@ ptrdiff_t file_read(FileDescriptor *const fp, char *const ret_buf,
}
}
#endif
}
if (fp->non_blocking) {
// Allow only at most one os_read[v] call.
break;
called_read = true;
}
}
return (ptrdiff_t)(size - read_remaining);

1
test/functional/core/main_spec.lua
View File

@ -36,7 +36,6 @@ describe('Command-line option', function()
os.remove(dollar_fname)
end)
it('treats - as stdin', function()
if helpers.pending_win32(pending) then return end
eq(nil, lfs.attributes(fname))
funcs.system(
{nvim_prog_abs(), '-u', 'NONE', '-i', 'NONE', '--headless',