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More changes how we use WideCharToMutliByte

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Handle case where there is no data pushed in.
This commit is contained in:
Calvin Rose 2024-08-18 07:23:06 -07:00
parent e53d22fad2
commit 33d2f9a522
2 changed files with 19 additions and 11 deletions
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28
src/core/filewatch.c
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@ -320,16 +320,17 @@ typedef struct {
uint64_t buf[FILE_INFO_PADDING / sizeof(uint64_t)]; /* Ensure alignment */
} OverlappedWatch;
#define NotifyChange FILE_NOTIFY_INFORMATION
static void read_dir_changes(OverlappedWatch *ow) {
BOOL result = ReadDirectoryChangesExW(ow->stream->handle,
(FILE_NOTIFY_EXTENDED_INFORMATION *) ow->buf,
BOOL result = ReadDirectoryChangesW(ow->stream->handle,
(NotifyChange *) ow->buf,
FILE_INFO_PADDING,
(ow->flags & WATCHFLAG_RECURSIVE) ? TRUE : FALSE,
ow->flags & ~WATCHFLAG_RECURSIVE,
NULL,
(OVERLAPPED *) ow,
NULL,
ReadDirectoryNotifyExtendedInformation);
NULL);
if (!result) {
janet_panicv(janet_ev_lasterr());
}
@ -373,19 +374,26 @@ static void watcher_callback_read(JanetFiber *fiber, JanetAsyncEvent event) {
break;
}
FILE_NOTIFY_EXTENDED_INFORMATION *fni = (FILE_NOTIFY_EXTENDED_INFORMATION *) ow->buf;
NotifyChange *fni = (NotifyChange *) ow->buf;
while (1) {
/* Got an event */
/* Extract name */
uint8_t tempbuf[FILE_INFO_PADDING];
int32_t nbytes = (int32_t) WideCharToMultiByte(CP_UTF8, WC_SEPCHARS, fni->FileName, fni->FileNameLength / 2, tempbuf, sizeof(tempbuf), NULL, NULL);
JanetString filename = janet_string(tempbuf, nbytes);
Janet filename;
if (fni->FileNameLength) {
int32_t nbytes = (int32_t) WideCharToMultiByte(CP_UTF8, 0, fni->FileName, fni->FileNameLength / sizeof(wchar_t), NULL, 0, NULL, NULL);
janet_assert(nbytes, "bad utf8 path");
uint8_t *into = janet_string_begin(nbytes);
WideCharToMultiByte(CP_UTF8, 0, fni->FileName, fni->FileNameLength / sizeof(wchar_t), into, nbytes, NULL, NULL);
filename = janet_wrap_string(janet_string_end(into));
} else {
filename = janet_cstringv("");
}
JanetKV *event = janet_struct_begin(3);
janet_struct_put(event, janet_ckeywordv("action"), janet_ckeywordv(watcher_actions_windows[fni->Action]));
janet_struct_put(event, janet_ckeywordv("file-name"), janet_wrap_string(filename));
janet_struct_put(event, janet_ckeywordv("file-name"), filename);
janet_struct_put(event, janet_ckeywordv("dir"), janet_wrap_string(ow->dir_path));
Janet eventv = janet_wrap_struct(janet_struct_end(event));
@ -393,7 +401,7 @@ static void watcher_callback_read(JanetFiber *fiber, JanetAsyncEvent event) {
/* Next event */
if (!fni->NextEntryOffset) break;
fni = (FILE_NOTIFY_EXTENDED_INFORMATION *) ((char *)fni + fni->NextEntryOffset);
fni = (NotifyChange *) ((char *)fni + fni->NextEntryOffset);
}
/* Make another call to read directory changes */