635 lines
16 KiB
C
635 lines
16 KiB
C
#include <SDL.h>
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#include <stdbool.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include "api.h"
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#include "rencache.h"
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#ifdef _WIN32
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#include <direct.h>
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#include <windows.h>
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#endif
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#ifdef __amigaos4__
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#include "platform/amigaos4.h"
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#endif
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extern SDL_Window *window;
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static const char* button_name(int button) {
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switch (button) {
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case 1 : return "left";
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case 2 : return "middle";
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case 3 : return "right";
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default : return "?";
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}
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}
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static char* key_name(char *dst, int sym) {
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strcpy(dst, SDL_GetKeyName(sym));
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char *p = dst;
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while (*p) {
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*p = tolower(*p);
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p++;
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}
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return dst;
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}
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struct HitTestInfo {
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int title_height;
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int controls_width;
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int resize_border;
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};
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typedef struct HitTestInfo HitTestInfo;
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static HitTestInfo window_hit_info[1] = {{0, 0}};
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#define RESIZE_FROM_TOP 0
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#define RESIZE_FROM_RIGHT 0
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static SDL_HitTestResult SDLCALL hit_test(SDL_Window *window, const SDL_Point *pt, void *data) {
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const HitTestInfo *hit_info = (HitTestInfo *) data;
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const int resize_border = hit_info->resize_border;
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const int controls_width = hit_info->controls_width;
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int w, h;
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SDL_GetWindowSize(window, &w, &h);
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if (pt->y < hit_info->title_height &&
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#if RESIZE_FROM_TOP
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pt->y > hit_info->resize_border &&
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#endif
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pt->x > resize_border && pt->x < w - controls_width) {
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return SDL_HITTEST_DRAGGABLE;
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}
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#define REPORT_RESIZE_HIT(name) { \
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return SDL_HITTEST_RESIZE_##name; \
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}
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if (pt->x < resize_border && pt->y < resize_border) {
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REPORT_RESIZE_HIT(TOPLEFT);
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#if RESIZE_FROM_TOP
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} else if (pt->x > resize_border && pt->x < w - controls_width && pt->y < resize_border) {
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REPORT_RESIZE_HIT(TOP);
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#endif
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} else if (pt->x > w - resize_border && pt->y < resize_border) {
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REPORT_RESIZE_HIT(TOPRIGHT);
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#if RESIZE_FROM_RIGHT
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} else if (pt->x > w - resize_border && pt->y > resize_border && pt->y < h - resize_border) {
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REPORT_RESIZE_HIT(RIGHT);
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#endif
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} else if (pt->x > w - resize_border && pt->y > h - resize_border) {
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REPORT_RESIZE_HIT(BOTTOMRIGHT);
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} else if (pt->x < w - resize_border && pt->x > resize_border && pt->y > h - resize_border) {
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REPORT_RESIZE_HIT(BOTTOM);
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} else if (pt->x < resize_border && pt->y > h - resize_border) {
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REPORT_RESIZE_HIT(BOTTOMLEFT);
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} else if (pt->x < resize_border && pt->y < h - resize_border && pt->y > resize_border) {
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REPORT_RESIZE_HIT(LEFT);
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}
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return SDL_HITTEST_NORMAL;
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}
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static int f_poll_event(lua_State *L) {
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char buf[16];
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int mx, my, wx, wy;
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SDL_Event e;
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top:
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if ( !SDL_PollEvent(&e) ) {
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return 0;
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}
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switch (e.type) {
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case SDL_QUIT:
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lua_pushstring(L, "quit");
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return 1;
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case SDL_WINDOWEVENT:
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if (e.window.event == SDL_WINDOWEVENT_RESIZED) {
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ren_resize_window();
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lua_pushstring(L, "resized");
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/* The size below will be in points. */
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lua_pushnumber(L, e.window.data1);
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lua_pushnumber(L, e.window.data2);
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return 3;
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} else if (e.window.event == SDL_WINDOWEVENT_EXPOSED) {
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rencache_invalidate();
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lua_pushstring(L, "exposed");
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return 1;
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} else if (e.window.event == SDL_WINDOWEVENT_MINIMIZED) {
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lua_pushstring(L, "minimized");
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return 1;
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} else if (e.window.event == SDL_WINDOWEVENT_MAXIMIZED) {
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lua_pushstring(L, "maximized");
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return 1;
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} else if (e.window.event == SDL_WINDOWEVENT_RESTORED) {
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lua_pushstring(L, "restored");
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return 1;
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}
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if (e.window.event == SDL_WINDOWEVENT_FOCUS_LOST) {
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lua_pushstring(L, "focuslost");
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return 1;
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}
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/* on some systems, when alt-tabbing to the window SDL will queue up
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** several KEYDOWN events for the `tab` key; we flush all keydown
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** events on focus so these are discarded */
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if (e.window.event == SDL_WINDOWEVENT_FOCUS_GAINED) {
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SDL_FlushEvent(SDL_KEYDOWN);
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}
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goto top;
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case SDL_DROPFILE:
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SDL_GetGlobalMouseState(&mx, &my);
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SDL_GetWindowPosition(window, &wx, &wy);
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lua_pushstring(L, "filedropped");
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lua_pushstring(L, e.drop.file);
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lua_pushnumber(L, mx - wx);
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lua_pushnumber(L, my - wy);
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SDL_free(e.drop.file);
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return 4;
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case SDL_KEYDOWN:
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#ifdef __APPLE__
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/* on macos 11.2.3 with sdl 2.0.14 the keyup handler for cmd+w below
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** was not enough. Maybe the quit event started to be triggered from the
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** keydown handler? In any case, flushing the quit event here too helped. */
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if ((e.key.keysym.sym == SDLK_w) && (e.key.keysym.mod & KMOD_GUI)) {
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SDL_FlushEvent(SDL_QUIT);
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}
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#endif
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lua_pushstring(L, "keypressed");
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lua_pushstring(L, key_name(buf, e.key.keysym.sym));
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return 2;
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case SDL_KEYUP:
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#ifdef __APPLE__
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/* on macos command+w will close the current window
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** we want to flush this event and let the keymapper
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** handle this key combination.
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** Thanks to mathewmariani, taken from his lite-macos github repository. */
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if ((e.key.keysym.sym == SDLK_w) && (e.key.keysym.mod & KMOD_GUI)) {
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SDL_FlushEvent(SDL_QUIT);
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}
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#endif
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lua_pushstring(L, "keyreleased");
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lua_pushstring(L, key_name(buf, e.key.keysym.sym));
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return 2;
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case SDL_TEXTINPUT:
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lua_pushstring(L, "textinput");
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lua_pushstring(L, e.text.text);
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return 2;
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case SDL_MOUSEBUTTONDOWN:
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if (e.button.button == 1) { SDL_CaptureMouse(1); }
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lua_pushstring(L, "mousepressed");
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lua_pushstring(L, button_name(e.button.button));
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lua_pushnumber(L, e.button.x);
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lua_pushnumber(L, e.button.y);
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lua_pushnumber(L, e.button.clicks);
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return 5;
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case SDL_MOUSEBUTTONUP:
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if (e.button.button == 1) { SDL_CaptureMouse(0); }
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lua_pushstring(L, "mousereleased");
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lua_pushstring(L, button_name(e.button.button));
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lua_pushnumber(L, e.button.x);
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lua_pushnumber(L, e.button.y);
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return 4;
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case SDL_MOUSEMOTION:
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SDL_PumpEvents();
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SDL_Event event_plus;
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while (SDL_PeepEvents(&event_plus, 1, SDL_GETEVENT, SDL_MOUSEMOTION, SDL_MOUSEMOTION) > 0) {
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e.motion.x = event_plus.motion.x;
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e.motion.y = event_plus.motion.y;
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e.motion.xrel += event_plus.motion.xrel;
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e.motion.yrel += event_plus.motion.yrel;
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}
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lua_pushstring(L, "mousemoved");
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lua_pushnumber(L, e.motion.x);
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lua_pushnumber(L, e.motion.y);
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lua_pushnumber(L, e.motion.xrel);
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lua_pushnumber(L, e.motion.yrel);
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return 5;
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case SDL_MOUSEWHEEL:
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lua_pushstring(L, "mousewheel");
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lua_pushnumber(L, e.wheel.y);
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return 2;
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default:
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goto top;
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}
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return 0;
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}
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static int f_wait_event(lua_State *L) {
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int nargs = lua_gettop(L);
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if (nargs >= 1) {
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double n = luaL_checknumber(L, 1);
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lua_pushboolean(L, SDL_WaitEventTimeout(NULL, n * 1000));
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} else {
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lua_pushboolean(L, SDL_WaitEvent(NULL));
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}
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return 1;
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}
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static SDL_Cursor* cursor_cache[SDL_SYSTEM_CURSOR_HAND + 1];
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static const char *cursor_opts[] = {
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"arrow",
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"ibeam",
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"sizeh",
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"sizev",
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"hand",
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NULL
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};
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static const int cursor_enums[] = {
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SDL_SYSTEM_CURSOR_ARROW,
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SDL_SYSTEM_CURSOR_IBEAM,
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SDL_SYSTEM_CURSOR_SIZEWE,
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SDL_SYSTEM_CURSOR_SIZENS,
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SDL_SYSTEM_CURSOR_HAND
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};
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static int f_set_cursor(lua_State *L) {
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int opt = luaL_checkoption(L, 1, "arrow", cursor_opts);
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int n = cursor_enums[opt];
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SDL_Cursor *cursor = cursor_cache[n];
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if (!cursor) {
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cursor = SDL_CreateSystemCursor(n);
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cursor_cache[n] = cursor;
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}
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SDL_SetCursor(cursor);
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return 0;
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}
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static int f_set_window_title(lua_State *L) {
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const char *title = luaL_checkstring(L, 1);
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SDL_SetWindowTitle(window, title);
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return 0;
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}
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static const char *window_opts[] = { "normal", "minimized", "maximized", "fullscreen", 0 };
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enum { WIN_NORMAL, WIN_MINIMIZED, WIN_MAXIMIZED, WIN_FULLSCREEN };
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static int f_set_window_mode(lua_State *L) {
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int n = luaL_checkoption(L, 1, "normal", window_opts);
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SDL_SetWindowFullscreen(window,
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n == WIN_FULLSCREEN ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
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if (n == WIN_NORMAL) { SDL_RestoreWindow(window); }
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if (n == WIN_MAXIMIZED) { SDL_MaximizeWindow(window); }
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if (n == WIN_MINIMIZED) { SDL_MinimizeWindow(window); }
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return 0;
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}
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static int f_set_window_bordered(lua_State *L) {
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int bordered = lua_toboolean(L, 1);
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SDL_SetWindowBordered(window, bordered);
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return 0;
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}
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static int f_set_window_hit_test(lua_State *L) {
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if (lua_gettop(L) == 0) {
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SDL_SetWindowHitTest(window, NULL, NULL);
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return 0;
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}
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window_hit_info->title_height = luaL_checknumber(L, 1);
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window_hit_info->controls_width = luaL_checknumber(L, 2);
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window_hit_info->resize_border = luaL_checknumber(L, 3);
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SDL_SetWindowHitTest(window, hit_test, window_hit_info);
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return 0;
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}
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static int f_get_window_size(lua_State *L) {
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int x, y, w, h;
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SDL_GetWindowSize(window, &w, &h);
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SDL_GetWindowPosition(window, &x, &y);
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lua_pushnumber(L, w);
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lua_pushnumber(L, h);
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lua_pushnumber(L, x);
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lua_pushnumber(L, y);
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return 4;
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}
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static int f_set_window_size(lua_State *L) {
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double w = luaL_checknumber(L, 1);
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double h = luaL_checknumber(L, 2);
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double x = luaL_checknumber(L, 3);
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double y = luaL_checknumber(L, 4);
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SDL_SetWindowSize(window, w, h);
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SDL_SetWindowPosition(window, x, y);
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ren_resize_window();
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return 0;
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}
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static int f_window_has_focus(lua_State *L) {
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unsigned flags = SDL_GetWindowFlags(window);
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lua_pushboolean(L, flags & SDL_WINDOW_INPUT_FOCUS);
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return 1;
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}
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static int f_get_window_mode(lua_State *L) {
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unsigned flags = SDL_GetWindowFlags(window);
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if (flags & SDL_WINDOW_FULLSCREEN_DESKTOP) {
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lua_pushstring(L, "fullscreen");
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} else if (flags & SDL_WINDOW_MINIMIZED) {
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lua_pushstring(L, "minimized");
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} else if (flags & SDL_WINDOW_MAXIMIZED) {
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lua_pushstring(L, "maximized");
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} else {
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lua_pushstring(L, "normal");
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}
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return 1;
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}
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static int f_show_fatal_error(lua_State *L) {
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const char *title = luaL_checkstring(L, 1);
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const char *msg = luaL_checkstring(L, 2);
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#ifdef _WIN32
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MessageBox(0, msg, title, MB_OK | MB_ICONERROR);
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#else
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SDL_MessageBoxButtonData buttons[] = {
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{ SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT, 0, "Ok" },
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};
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SDL_MessageBoxData data = {
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.title = title,
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.message = msg,
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.numbuttons = 1,
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.buttons = buttons,
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};
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int buttonid;
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SDL_ShowMessageBox(&data, &buttonid);
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#endif
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return 0;
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}
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static int f_chdir(lua_State *L) {
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const char *path = luaL_checkstring(L, 1);
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int err = chdir(path);
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if (err) { luaL_error(L, "chdir() failed"); }
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return 0;
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}
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static int f_list_dir(lua_State *L) {
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const char *path = luaL_checkstring(L, 1);
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DIR *dir = opendir(path);
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if (!dir) {
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lua_pushnil(L);
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lua_pushstring(L, strerror(errno));
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return 2;
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}
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lua_newtable(L);
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int i = 1;
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struct dirent *entry;
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while ( (entry = readdir(dir)) ) {
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if (strcmp(entry->d_name, "." ) == 0) { continue; }
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if (strcmp(entry->d_name, "..") == 0) { continue; }
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lua_pushstring(L, entry->d_name);
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lua_rawseti(L, -2, i);
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i++;
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}
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closedir(dir);
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return 1;
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}
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#ifdef _WIN32
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#include <windows.h>
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#define realpath(x, y) _fullpath(y, x, MAX_PATH)
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#endif
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#ifdef __amigaos4__
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#define realpath(x, y) _fullpath(x)
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#endif
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static int f_absolute_path(lua_State *L) {
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const char *path = luaL_checkstring(L, 1);
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char *res = realpath(path, NULL);
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if (!res) { return 0; }
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lua_pushstring(L, res);
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free(res);
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return 1;
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}
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static int f_get_file_info(lua_State *L) {
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const char *path = luaL_checkstring(L, 1);
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struct stat s;
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int err = stat(path, &s);
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if (err < 0) {
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lua_pushnil(L);
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lua_pushstring(L, strerror(errno));
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return 2;
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}
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lua_newtable(L);
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lua_pushnumber(L, s.st_mtime);
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lua_setfield(L, -2, "modified");
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lua_pushnumber(L, s.st_size);
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lua_setfield(L, -2, "size");
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if (S_ISREG(s.st_mode)) {
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lua_pushstring(L, "file");
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} else if (S_ISDIR(s.st_mode)) {
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lua_pushstring(L, "dir");
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} else {
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lua_pushnil(L);
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}
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lua_setfield(L, -2, "type");
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return 1;
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}
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static int f_mkdir(lua_State *L) {
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const char *path = luaL_checkstring(L, 1);
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#ifdef _WIN32
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int err = _mkdir(path);
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#else
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int err = mkdir(path, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH);
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#endif
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if (err < 0) {
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lua_pushboolean(L, 0);
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lua_pushstring(L, strerror(errno));
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return 2;
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}
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lua_pushboolean(L, 1);
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return 1;
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}
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static int f_get_clipboard(lua_State *L) {
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char *text = SDL_GetClipboardText();
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if (!text) { return 0; }
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lua_pushstring(L, text);
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SDL_free(text);
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return 1;
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}
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static int f_set_clipboard(lua_State *L) {
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const char *text = luaL_checkstring(L, 1);
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SDL_SetClipboardText(text);
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return 0;
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}
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static int f_get_time(lua_State *L) {
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double n = SDL_GetPerformanceCounter() / (double) SDL_GetPerformanceFrequency();
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lua_pushnumber(L, n);
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return 1;
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}
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|
|
|
|
|
static int f_sleep(lua_State *L) {
|
|
double n = luaL_checknumber(L, 1);
|
|
SDL_Delay(n * 1000);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int f_exec(lua_State *L) {
|
|
size_t len;
|
|
const char *cmd = luaL_checklstring(L, 1, &len);
|
|
char *buf = malloc(len + 32);
|
|
if (!buf) { luaL_error(L, "buffer allocation failed"); }
|
|
#if _WIN32
|
|
sprintf(buf, "cmd /c \"%s\"", cmd);
|
|
WinExec(buf, SW_HIDE);
|
|
#else
|
|
sprintf(buf, "%s &", cmd);
|
|
int res = system(buf);
|
|
(void) res;
|
|
#endif
|
|
free(buf);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int f_fuzzy_match(lua_State *L) {
|
|
size_t strLen, ptnLen;
|
|
const char *str = luaL_checklstring(L, 1, &strLen);
|
|
const char *ptn = luaL_checklstring(L, 2, &ptnLen);
|
|
bool files = false;
|
|
if (lua_gettop(L) > 2 && lua_isboolean(L,3))
|
|
files = lua_toboolean(L, 3);
|
|
|
|
int score = 0;
|
|
int run = 0;
|
|
|
|
// Match things *backwards*. This allows for better matching on filenames than the above
|
|
// function. For example, in the lite project, opening "renderer" has lib/font_render/build.sh
|
|
// as the first result, rather than src/renderer.c. Clearly that's wrong.
|
|
if (files) {
|
|
const char* strEnd = str + strLen - 1;
|
|
const char* ptnEnd = ptn + ptnLen - 1;
|
|
while (strEnd >= str && ptnEnd >= ptn) {
|
|
while (*strEnd == ' ') { strEnd--; }
|
|
while (*ptnEnd == ' ') { ptnEnd--; }
|
|
if (tolower(*strEnd) == tolower(*ptnEnd)) {
|
|
score += run * 10 - (*strEnd != *ptnEnd);
|
|
run++;
|
|
ptnEnd--;
|
|
} else {
|
|
score -= 10;
|
|
run = 0;
|
|
}
|
|
strEnd--;
|
|
}
|
|
if (ptnEnd >= ptn) { return 0; }
|
|
} else {
|
|
while (*str && *ptn) {
|
|
while (*str == ' ') { str++; }
|
|
while (*ptn == ' ') { ptn++; }
|
|
if (tolower(*str) == tolower(*ptn)) {
|
|
score += run * 10 - (*str != *ptn);
|
|
run++;
|
|
ptn++;
|
|
} else {
|
|
score -= 10;
|
|
run = 0;
|
|
}
|
|
str++;
|
|
}
|
|
if (*ptn) { return 0; }
|
|
}
|
|
|
|
lua_pushnumber(L, score - (int)strLen);
|
|
return 1;
|
|
}
|
|
|
|
static int f_set_window_opacity(lua_State *L) {
|
|
double n = luaL_checknumber(L, 1);
|
|
int r = SDL_SetWindowOpacity(window, n);
|
|
lua_pushboolean(L, r > -1);
|
|
return 1;
|
|
}
|
|
|
|
|
|
static const luaL_Reg lib[] = {
|
|
{ "poll_event", f_poll_event },
|
|
{ "wait_event", f_wait_event },
|
|
{ "set_cursor", f_set_cursor },
|
|
{ "set_window_title", f_set_window_title },
|
|
{ "set_window_mode", f_set_window_mode },
|
|
{ "get_window_mode", f_get_window_mode },
|
|
{ "set_window_bordered", f_set_window_bordered },
|
|
{ "set_window_hit_test", f_set_window_hit_test },
|
|
{ "get_window_size", f_get_window_size },
|
|
{ "set_window_size", f_set_window_size },
|
|
{ "window_has_focus", f_window_has_focus },
|
|
{ "show_fatal_error", f_show_fatal_error },
|
|
{ "chdir", f_chdir },
|
|
{ "mkdir", f_mkdir },
|
|
{ "list_dir", f_list_dir },
|
|
{ "absolute_path", f_absolute_path },
|
|
{ "get_file_info", f_get_file_info },
|
|
{ "get_clipboard", f_get_clipboard },
|
|
{ "set_clipboard", f_set_clipboard },
|
|
{ "get_time", f_get_time },
|
|
{ "sleep", f_sleep },
|
|
{ "exec", f_exec },
|
|
{ "fuzzy_match", f_fuzzy_match },
|
|
{ "set_window_opacity", f_set_window_opacity },
|
|
{ NULL, NULL }
|
|
};
|
|
|
|
|
|
int luaopen_system(lua_State *L) {
|
|
luaL_newlib(L, lib);
|
|
return 1;
|
|
}
|