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Fix Project Scanning (#746)

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Removed dmon, and replaced with logic that works across Linux, Mac, FreeBSD and Windows. Have tested on all platforms, and seems to work.

Co-authored-by: Jan200101 <sentrycraft123@gmail.com>
This commit is contained in:
Adam
2022-03-06 00:59:22 -05:00
committed by GitHub
co-authored by Jan200101
parent 6cb403b450
commit f85612e0f0
19 changed files with 588 additions and 2544 deletions
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src/api/api.c
+8 -5
View File
@@ -1,20 +1,23 @@
#include "api.h"
int luaopen_system(lua_State *L);
int luaopen_renderer(lua_State *L);
int luaopen_regex(lua_State *L);
int luaopen_process(lua_State *L);
int luaopen_dirmonitor(lua_State* L);
static const luaL_Reg libs[] = {
{ "system", luaopen_system },
{ "renderer", luaopen_renderer },
{ "regex", luaopen_regex },
{ "process", luaopen_process },
{ "system", luaopen_system },
{ "renderer", luaopen_renderer },
{ "regex", luaopen_regex },
{ "process", luaopen_process },
{ "dirmonitor", luaopen_dirmonitor },
{ NULL, NULL }
};
void api_load_libs(lua_State *L) {
for (int i = 0; libs[i].name; i++)
luaL_requiref(L, libs[i].name, libs[i].func, 1);
}
src/api/api.h
+1
View File
@@ -7,6 +7,7 @@
#define API_TYPE_FONT "Font"
#define API_TYPE_PROCESS "Process"
#define API_TYPE_DIRMONITOR "Dirmonitor"
#define API_CONSTANT_DEFINE(L, idx, key, n) (lua_pushnumber(L, n), lua_setfield(L, idx - 1, key))
src/api/dirmonitor.c
+203
View File
@@ -0,0 +1,203 @@
#include "api.h"
#include <stdlib.h>
#ifdef _WIN32
#include <windows.h>
#elif __linux__
#include <sys/inotify.h>
#include <limits.h>
#else
#include <sys/event.h>
#endif
#include <unistd.h>
#include <errno.h>
#include <dirent.h>
#include <fcntl.h>
#include <string.h>
#include <stdbool.h>
/*
This is *slightly* a clusterfuck. Normally, we'd
have windows wait on a list of handles like inotify,
however, MAXIMUM_WAIT_OBJECTS is 64. Yes, seriously.
So, for windows, we are recursive.
*/
struct dirmonitor {
int fd;
#if _WIN32
HANDLE handle;
char buffer[8192];
OVERLAPPED overlapped;
bool running;
#endif
};
struct dirmonitor* init_dirmonitor() {
struct dirmonitor* monitor = calloc(sizeof(struct dirmonitor), 1);
#ifndef _WIN32
#if __linux__
monitor->fd = inotify_init1(IN_NONBLOCK);
#else
monitor->fd = kqueue();
#endif
#endif
return monitor;
}
#if _WIN32
static void close_monitor_handle(struct dirmonitor* monitor) {
if (monitor->handle) {
if (monitor->running) {
BOOL result = CancelIoEx(monitor->handle, &monitor->overlapped);
DWORD error = GetLastError();
if (result == TRUE || error != ERROR_NOT_FOUND) {
DWORD bytes_transferred;
GetOverlappedResult( monitor->handle, &monitor->overlapped, &bytes_transferred, TRUE );
}
monitor->running = false;
}
CloseHandle(monitor->handle);
}
monitor->handle = NULL;
}
#endif
void deinit_dirmonitor(struct dirmonitor* monitor) {
#if _WIN32
close_monitor_handle(monitor);
#else
close(monitor->fd);
#endif
free(monitor);
}
int check_dirmonitor(struct dirmonitor* monitor, int (*change_callback)(int, const char*, void*), void* data) {
#if _WIN32
if (!monitor->running) {
if (ReadDirectoryChangesW(monitor->handle, monitor->buffer, sizeof(monitor->buffer), TRUE, FILE_NOTIFY_CHANGE_FILE_NAME | FILE_NOTIFY_CHANGE_DIR_NAME, NULL, &monitor->overlapped, NULL) == 0)
return GetLastError();
monitor->running = true;
}
DWORD bytes_transferred;
if (!GetOverlappedResult(monitor->handle, &monitor->overlapped, &bytes_transferred, FALSE)) {
int error = GetLastError();
return error == ERROR_IO_PENDING || error == ERROR_IO_INCOMPLETE ? 0 : error;
}
monitor->running = false;
for (FILE_NOTIFY_INFORMATION* info = (FILE_NOTIFY_INFORMATION*)monitor->buffer; (char*)info < monitor->buffer + sizeof(monitor->buffer); info = (FILE_NOTIFY_INFORMATION*)((char*)info) + info->NextEntryOffset) {
change_callback(info->FileNameLength, (char*)info->FileName, data);
if (!info->NextEntryOffset)
break;
}
monitor->running = false;
return 0;
#elif __linux__
char buf[PATH_MAX + sizeof(struct inotify_event)];
while (1) {
ssize_t len = read(monitor->fd, buf, sizeof(buf));
if (len == -1 && errno != EAGAIN)
return errno;
if (len <= 0)
return 0;
for (char *ptr = buf; ptr < buf + len; ptr += sizeof(struct inotify_event) + ((struct inotify_event*)ptr)->len)
change_callback(((const struct inotify_event *) ptr)->wd, NULL, data);
}
#else
struct kevent event;
while (1) {
struct timespec tm = {0};
int nev = kevent(monitor->fd, NULL, 0, &event, 1, &tm);
if (nev == -1)
return errno;
if (nev <= 0)
return 0;
change_callback(event.ident, NULL, data);
}
#endif
}
int add_dirmonitor(struct dirmonitor* monitor, const char* path) {
#if _WIN32
close_monitor_handle(monitor);
monitor->handle = CreateFileA(path, FILE_LIST_DIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OVERLAPPED, NULL);
if (monitor->handle && monitor->handle != INVALID_HANDLE_VALUE)
return 1;
monitor->handle = NULL;
return -1;
#elif __linux__
return inotify_add_watch(monitor->fd, path, IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO);
#else
int fd = open(path, O_RDONLY);
struct kevent change;
EV_SET(&change, fd, EVFILT_VNODE, EV_ADD | EV_CLEAR, NOTE_DELETE | NOTE_EXTEND | NOTE_WRITE | NOTE_ATTRIB | NOTE_LINK | NOTE_RENAME, 0, (void*)path);
kevent(monitor->fd, &change, 1, NULL, 0, NULL);
return fd;
#endif
}
void remove_dirmonitor(struct dirmonitor* monitor, int fd) {
#if _WIN32
close_monitor_handle(monitor);
#elif __linux__
inotify_rm_watch(monitor->fd, fd);
#else
close(fd);
#endif
}
static int f_check_dir_callback(int watch_id, const char* path, void* L) {
#if _WIN32
char buffer[PATH_MAX*4];
int count = WideCharToMultiByte(CP_UTF8, 0, (WCHAR*)path, watch_id, buffer, PATH_MAX*4 - 1, NULL, NULL);
lua_pushlstring(L, buffer, count);
#else
lua_pushnumber(L, watch_id);
#endif
lua_pcall(L, 1, 1, 0);
int result = lua_toboolean(L, -1);
lua_pop(L, 1);
return !result;
}
static int f_dirmonitor_new(lua_State* L) {
struct dirmonitor** monitor = lua_newuserdata(L, sizeof(struct dirmonitor**));
*monitor = init_dirmonitor();
luaL_setmetatable(L, API_TYPE_DIRMONITOR);
return 1;
}
static int f_dirmonitor_gc(lua_State* L) {
deinit_dirmonitor(*((struct dirmonitor**)luaL_checkudata(L, 1, API_TYPE_DIRMONITOR)));
return 0;
}
static int f_dirmonitor_watch(lua_State *L) {
lua_pushnumber(L, add_dirmonitor(*(struct dirmonitor**)luaL_checkudata(L, 1, API_TYPE_DIRMONITOR), luaL_checkstring(L, 2)));
return 1;
}
static int f_dirmonitor_unwatch(lua_State *L) {
remove_dirmonitor(*(struct dirmonitor**)luaL_checkudata(L, 1, API_TYPE_DIRMONITOR), luaL_checknumber(L, 2));
return 0;
}
static int f_dirmonitor_check(lua_State* L) {
lua_pushnumber(L, check_dirmonitor(*(struct dirmonitor**)luaL_checkudata(L, 1, API_TYPE_DIRMONITOR), f_check_dir_callback, L));
return 1;
}
static const luaL_Reg dirmonitor_lib[] = {
{ "new", f_dirmonitor_new },
{ "__gc", f_dirmonitor_gc },
{ "watch", f_dirmonitor_watch },
{ "unwatch", f_dirmonitor_unwatch },
{ "check", f_dirmonitor_check },
{NULL, NULL}
};
int luaopen_dirmonitor(lua_State* L) {
luaL_newmetatable(L, API_TYPE_DIRMONITOR);
luaL_setfuncs(L, dirmonitor_lib, 0);
lua_pushvalue(L, -1);
lua_setfield(L, -2, "__index");
return 1;
}
src/api/system.c
+19 -112
View File
@@ -7,7 +7,6 @@
#include <errno.h>
#include <sys/stat.h>
#include "api.h"
#include "../dirmonitor.h"
#include "../rencache.h"
#ifdef _WIN32
#include <direct.h>
@@ -255,26 +254,6 @@ top:
lua_pushinteger(L, e.wheel.y);
return 2;
case SDL_USEREVENT:
lua_pushstring(L, "dirchange");
lua_pushinteger(L, e.user.code >> 16);
switch (e.user.code & 0xffff) {
case DMON_ACTION_DELETE:
lua_pushstring(L, "delete");
break;
case DMON_ACTION_CREATE:
lua_pushstring(L, "create");
break;
case DMON_ACTION_MODIFY:
lua_pushstring(L, "modify");
break;
default:
return luaL_error(L, "unknown dmon event action: %d", e.user.code & 0xffff);
}
lua_pushstring(L, e.user.data1);
free(e.user.data1);
return 4;
default:
goto top;
}
@@ -592,29 +571,27 @@ static struct f_type_names fs_names[] = {
{ 0x0, NULL },
};
static int f_get_fs_type(lua_State *L) {
const char *path = luaL_checkstring(L, 1);
struct statfs buf;
int status = statfs(path, &buf);
if (status != 0) {
return luaL_error(L, "error calling statfs on %s", path);
}
for (int i = 0; fs_names[i].magic; i++) {
if (fs_names[i].magic == buf.f_type) {
lua_pushstring(L, fs_names[i].name);
return 1;
}
}
lua_pushstring(L, "unknown");
return 1;
}
#else
static int f_return_unknown(lua_State *L) {
lua_pushstring(L, "unknown");
return 1;
}
#endif
static int f_get_fs_type(lua_State *L) {
#if __linux__
const char *path = luaL_checkstring(L, 1);
struct statfs buf;
int status = statfs(path, &buf);
if (status != 0) {
return luaL_error(L, "error calling statfs on %s", path);
}
for (int i = 0; fs_names[i].magic; i++) {
if (fs_names[i].magic == buf.f_type) {
lua_pushstring(L, fs_names[i].name);
return 1;
}
}
#endif
lua_pushstring(L, "unknown");
return 1;
}
static int f_mkdir(lua_State *L) {
const char *path = luaL_checkstring(L, 1);
@@ -815,66 +792,6 @@ static int f_load_native_plugin(lua_State *L) {
return result;
}
static int f_watch_dir(lua_State *L) {
const char *path = luaL_checkstring(L, 1);
/* On linux we watch non-recursively and we add/remove each sub-directory explicitly
* using the function system.watch_dir_add/rm. On other systems we watch recursively
* and system.watch_dir_add/rm are dummy functions that always returns true. */
#if __linux__
const uint32_t dmon_flags = DMON_WATCHFLAGS_FOLLOW_SYMLINKS;
#elif __APPLE__
const uint32_t dmon_flags = DMON_WATCHFLAGS_FOLLOW_SYMLINKS | DMON_WATCHFLAGS_RECURSIVE;
#else
const uint32_t dmon_flags = DMON_WATCHFLAGS_RECURSIVE;
#endif
dmon_error error;
dmon_watch_id watch_id = dmon_watch(path, dirmonitor_watch_callback, dmon_flags, NULL, &error);
if (watch_id.id == 0) {
lua_pushnil(L);
lua_pushstring(L, dmon_error_str(error));
return 2;
}
lua_pushinteger(L, watch_id.id);
return 1;
}
static int f_unwatch_dir(lua_State *L) {
dmon_watch_id watch_id;
watch_id.id = luaL_checkinteger(L, 1);
dmon_unwatch(watch_id);
return 0;
}
#if __linux__
static int f_watch_dir_add(lua_State *L) {
dmon_watch_id watch_id;
watch_id.id = luaL_checkinteger(L, 1);
const char *subdir = luaL_checkstring(L, 2);
dmon_error error_code;
int success = dmon_watch_add(watch_id, subdir, &error_code);
if (!success) {
lua_pushboolean(L, 0);
lua_pushstring(L, dmon_error_str(error_code));
return 2;
}
lua_pushboolean(L, 1);
return 1;
}
static int f_watch_dir_rm(lua_State *L) {
dmon_watch_id watch_id;
watch_id.id = luaL_checkinteger(L, 1);
const char *subdir = luaL_checkstring(L, 2);
lua_pushboolean(L, dmon_watch_rm(watch_id, subdir));
return 1;
}
#else
static int f_return_true(lua_State *L) {
lua_pushboolean(L, 1);
return 1;
}
#endif
#ifdef _WIN32
#define PATHSEP '\\'
#else
@@ -961,18 +878,8 @@ static const luaL_Reg lib[] = {
{ "fuzzy_match", f_fuzzy_match },
{ "set_window_opacity", f_set_window_opacity },
{ "load_native_plugin", f_load_native_plugin },
{ "watch_dir", f_watch_dir },
{ "unwatch_dir", f_unwatch_dir },
{ "path_compare", f_path_compare },
#if __linux__
{ "watch_dir_add", f_watch_dir_add },
{ "watch_dir_rm", f_watch_dir_rm },
{ "get_fs_type", f_get_fs_type },
#else
{ "watch_dir_add", f_return_true },
{ "watch_dir_rm", f_return_true },
{ "get_fs_type", f_return_unknown },
#endif
{ NULL, NULL }
};