static void copy_image(lua_State * L, lua_Number scale)
{
image *a, **aa, *b, **bb;
if (lua_gettop(L) != 1)
luaL_error(L, "img.copy() needs exactly 1 argument");
aa = (image **) luaL_checkudata(L, 1, TYPE_IMG); /* a */
lua_pop(L, 1); /* - */
a = *aa;
bb = (image **) lua_newuserdata(L, sizeof(image *)); /* b */
luaL_getmetatable(L, TYPE_IMG); /* m b */
lua_setmetatable(L, -2); /* b */
b = *bb = new_image();
if (!is_wd_running(a))
img_width(b) = do_zround(img_width(a) * scale);
if (!is_ht_running(a))
img_height(b) = do_zround(img_height(a) * scale);
if (!is_dp_running(a))
img_depth(b) = do_zround(img_depth(a) * scale);
img_transform(b) = img_transform(a);
img_dict(b) = img_dict(a);
if (img_dictref(a) != LUA_NOREF) {
lua_rawgeti(L, LUA_GLOBALSINDEX, img_dictref(a)); /* ad b */
img_dictref(b) = luaL_ref(L, LUA_GLOBALSINDEX); /* b */
} else
assert(img_state(img_dict(a)) >= DICT_REFERED);
}
static void copy_image(lua_State * L, lua_Number scale)
{
image *a, **aa, *b, **bb;
image_dict *d;
if (lua_gettop(L) == 0)
luaL_error(L, "img.copy needs an image as argument");
aa = (image **) luaL_checkudata(L, 1, TYPE_IMG); /* a */
lua_pop(L, 1); /* - */
a = *aa;
bb = (image **) lua_newuserdata(L, sizeof(image *)); /* b */
luaL_getmetatable(L, TYPE_IMG); /* m b */
lua_setmetatable(L, -2); /* b */
b = *bb = new_image();
if (!is_wd_running(a))
img_width(b) = do_zround(img_width(a) * scale);
if (!is_ht_running(a))
img_height(b) = do_zround(img_height(a) * scale);
if (!is_dp_running(a))
img_depth(b) = do_zround(img_depth(a) * scale);
img_transform(b) = img_transform(a);
img_dict(b) = img_dict(a);
if (img_dictref(a) != LUA_NOREF) {
lua_rawgeti(L, LUA_REGISTRYINDEX, img_dictref(a)); /* ad b */
img_dictref(b) = luaL_ref(L, LUA_REGISTRYINDEX); /* b */
d = img_dict(*aa);
img_luaref(d) += 1;
} else if (img_state(img_dict(a)) < DICT_REFERED) {
luaL_error(L, "img.copy needs an proper image as argument");
}
}
static void read_scale_img(image * a)
{
image_dict *ad;
if (a == NULL) {
luaL_error(Luas, "the image scaler needs a valid image");
} else {
ad = img_dict(a);
if (a == NULL) {
luaL_error(Luas, "the image scaler needs a valid dictionary");
} else {
if (img_state(ad) == DICT_NEW) {
if (img_type(ad) == IMG_TYPE_PDFSTREAM)
check_pdfstream_dict(ad);
else {
read_img(ad);
}
}
if ((img_type(ad) == IMG_TYPE_NONE) || (img_state(ad) == DICT_NEW)) {
normal_warning("image","don't rely on the image data to be okay");
img_width(a) = 0;
img_height(a) = 0;
img_depth(a) = 0;
} else if (is_wd_running(a) || is_ht_running(a) || is_dp_running(a)) {
img_dimen(a) = scale_img(ad, img_dimen(a), img_transform(a));
}
}
}
}
static void read_scale_img(image * a)
{
image_dict *ad;
assert(a != NULL);
ad = img_dict(a);
assert(ad != NULL);
if (img_state(ad) == DICT_NEW) {
if (img_type(ad) == IMG_TYPE_PDFSTREAM)
check_pdfstream_dict(ad);
else {
fix_pdf_minorversion(static_pdf);
read_img(static_pdf,
ad, pdf_minor_version, pdf_inclusion_errorlevel);
}
}
if (is_wd_running(a) || is_ht_running(a) || is_dp_running(a))
img_dimen(a) = scale_img(ad, img_dimen(a), img_transform(a));
}
static void image_to_lua(lua_State * L, image * a)
{ /* key user ... */
int i, j;
image_dict *d = img_dict(a);
assert(d != NULL);
lua_pushstring(L, IMG_ENV); /* s k u ... */
lua_gettable(L, LUA_REGISTRYINDEX); /* t k u ... */
lua_pushvalue(L, -2); /* k t k u ... */
lua_gettable(L, -2); /* i? t k u ... */
if (!lua_isnumber(L, -1)) /* !i t k u ... */
luaL_error(L, "image_to_lua(): %s is not a valid image key",
lua_tostring(L, -3));
i = (int) lua_tointeger(L, -1); /* i t k u ... */
lua_pop(L, 3); /* u ... */
switch (i) {
case P_WIDTH:
if (is_wd_running(a))
lua_pushnil(L);
else
lua_pushinteger(L, img_width(a));
break;
case P_HEIGHT:
if (is_ht_running(a))
lua_pushnil(L);
else
lua_pushinteger(L, img_height(a));
break;
case P_DEPTH:
if (is_dp_running(a))
lua_pushnil(L);
else
lua_pushinteger(L, img_depth(a));
break;
case P_TRANSFORM:
lua_pushinteger(L, img_transform(a));
break;
/* now follow all image_dict entries */
case P_FILENAME:
if (img_filename(d) == NULL || strlen(img_filename(d)) == 0)
lua_pushnil(L);
else
lua_pushstring(L, img_filename(d));
break;
case P_VISIBLEFILENAME:
if (img_visiblefilename(d) == NULL
|| strlen(img_visiblefilename(d)) == 0)
lua_pushnil(L);
else
lua_pushstring(L, img_visiblefilename(d));
break;
case P_FILEPATH:
if (img_filepath(d) == NULL || strlen(img_filepath(d)) == 0)
lua_pushnil(L);
else
lua_pushstring(L, img_filepath(d));
break;
case P_ATTR:
if (img_attr(d) == NULL || strlen(img_attr(d)) == 0)
lua_pushnil(L);
else
lua_pushstring(L, img_attr(d));
break;
case P_PAGE:
if (img_pagename(d) != NULL && strlen(img_pagename(d)) != 0)
lua_pushstring(L, img_pagename(d));
else
lua_pushinteger(L, img_pagenum(d));
break;
case P_TOTALPAGES:
lua_pushinteger(L, img_totalpages(d));
break;
case P_XSIZE: /* Modify by /Rotate only for output */
if ((img_rotation(d) & 1) == 0)
lua_pushinteger(L, img_xsize(d));
else
lua_pushinteger(L, img_ysize(d));
break;
case P_YSIZE: /* Modify by /Rotate only for output */
if ((img_rotation(d) & 1) == 0)
lua_pushinteger(L, img_ysize(d));
else
lua_pushinteger(L, img_xsize(d));
break;
case P_XRES:
lua_pushinteger(L, img_xres(d));
break;
case P_YRES:
lua_pushinteger(L, img_yres(d));
break;
case P_ROTATION:
lua_pushinteger(L, img_rotation(d));
break;
case P_COLORSPACE:
if (img_colorspace(d) == 0)
lua_pushnil(L);
else
lua_pushinteger(L, img_colorspace(d));
break;
case P_COLORDEPTH:
if (img_colordepth(d) == 0)
lua_pushnil(L);
else
lua_pushinteger(L, img_colordepth(d));
break;
case P_IMAGETYPE:
j = img_type(d);
if (j >= 0 && j <= imgtype_max) {
if (j == IMG_TYPE_NONE)
lua_pushnil(L);
else
lua_pushstring(L, imgtype_s[j]);
} else
assert(0);
break;
case P_PAGEBOX:
j = img_pagebox(d);
if (j >= 0 && j <= pagebox_max) {
if (j == PDF_BOX_SPEC_NONE)
lua_pushnil(L);
else
lua_pushstring(L, pdfboxspec_s[j]);
} else
assert(0);
break;
case P_BBOX:
if (!img_is_bbox(d)) {
img_bbox(d)[0] = img_xorig(d);
img_bbox(d)[1] = img_yorig(d);
img_bbox(d)[2] = img_xorig(d) + img_xsize(d);
img_bbox(d)[3] = img_yorig(d) + img_ysize(d);
}
lua_newtable(L);
lua_pushinteger(L, 1);
lua_pushinteger(L, img_bbox(d)[0]);
lua_settable(L, -3);
lua_pushinteger(L, 2);
lua_pushinteger(L, img_bbox(d)[1]);
lua_settable(L, -3);
lua_pushinteger(L, 3);
lua_pushinteger(L, img_bbox(d)[2]);
lua_settable(L, -3);
lua_pushinteger(L, 4);
lua_pushinteger(L, img_bbox(d)[3]);
lua_settable(L, -3);
break;
case P_OBJNUM:
if (img_objnum(d) == 0)
lua_pushnil(L);
else
lua_pushinteger(L, img_objnum(d));
break;
case P_INDEX:
if (img_index(d) == 0)
lua_pushnil(L);
else
lua_pushinteger(L, img_index(d));
break;
case P_STREAM:
if (img_type(d) != IMG_TYPE_PDFSTREAM || img_pdfstream_ptr(d) == NULL
|| img_pdfstream_stream(d) == NULL
|| strlen(img_pdfstream_stream(d)) == 0)
lua_pushnil(L);
else
lua_pushstring(L, img_pdfstream_stream(d));
break;
default:
assert(0);
} /* v u ... */
}
static int m_img_get(lua_State * L)
{
int j;
const char *s;
image **a = (image **) luaL_checkudata(L, 1, TYPE_IMG); /* k u */
image_dict *d = img_dict(*a);
if (d == NULL) {
luaL_error(L, "invalid image dictionary");
}
s = lua_tostring(L, 2);
if (lua_key_eq(s,width)) {
if (is_wd_running(*a)) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_width(*a));
}
} else if (lua_key_eq(s,height)) {
if (is_ht_running(*a)) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_height(*a));
}
} else if (lua_key_eq(s,depth)) {
if (is_dp_running(*a)) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_depth(*a));
}
} else if (lua_key_eq(s,transform)) {
lua_pushinteger(L, img_transform(*a));
} else if (lua_key_eq(s,filename)) {
if (img_filename(d) == NULL || strlen(img_filename(d)) == 0) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_filename(d));
}
} else if (lua_key_eq(s,visiblefilename)) {
if (img_visiblefilename(d) == NULL || strlen(img_visiblefilename(d)) == 0) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_visiblefilename(d));
}
} else if (lua_key_eq(s,keepopen)) {
lua_pushboolean(L, img_keepopen(d));
} else if (lua_key_eq(s,filepath)) {
if (img_filepath(d) == NULL || strlen(img_filepath(d)) == 0) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_filepath(d));
}
} else if (lua_key_eq(s,attr)) {
if (img_attr(d) == NULL || strlen(img_attr(d)) == 0) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_attr(d));
}
} else if (lua_key_eq(s,page)) {
if (img_pagename(d) != NULL && strlen(img_pagename(d)) != 0) {
lua_pushstring(L, img_pagename(d));
} else {
lua_pushinteger(L, img_pagenum(d));
}
} else if (lua_key_eq(s,pages)) {
lua_pushinteger(L, img_totalpages(d));
} else if (lua_key_eq(s,xsize)) {
if ((img_rotation(d) & 1) == 0) {
lua_pushinteger(L, img_xsize(d));
} else {
lua_pushinteger(L, img_ysize(d));
}
} else if (lua_key_eq(s,ysize)) {
if ((img_rotation(d) & 1) == 0) {
lua_pushinteger(L, img_ysize(d));
} else {
lua_pushinteger(L, img_xsize(d));
}
} else if (lua_key_eq(s,xres)) {
lua_pushinteger(L, img_xres(d));
} else if (lua_key_eq(s,yres)) {
lua_pushinteger(L, img_yres(d));
} else if (lua_key_eq(s,rotation)) {
lua_pushinteger(L, img_rotation(d));
} else if (lua_key_eq(s,colorspace)) {
if (img_colorspace(d) == 0) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_colorspace(d));
}
} else if (lua_key_eq(s,colordepth)) {
if (img_colordepth(d) == 0) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_colordepth(d));
}
} else if (lua_key_eq(s,imagetype)) {
j = img_type(d);
if (j >= 0 && j <= img_types_max) {
if (j == IMG_TYPE_NONE) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_types[j]);
}
} else {
lua_pushnil(L);
}
} else if (lua_key_eq(s,pagebox)) {
j = img_pagebox(d);
if (j < 0 || j >= img_pageboxes_max) {
j = 0;
}
lua_push_img_pagebox(L, j);
} else if (lua_key_eq(s,bbox)) {
if (!img_is_bbox(d)) {
img_bbox(d)[0] = img_xorig(d);
img_bbox(d)[1] = img_yorig(d);
img_bbox(d)[2] = img_xorig(d) + img_xsize(d);
img_bbox(d)[3] = img_yorig(d) + img_ysize(d);
}
lua_newtable(L);
lua_pushinteger(L, 1);
lua_pushinteger(L, img_bbox(d)[0]);
lua_settable(L, -3);
lua_pushinteger(L, 2);
lua_pushinteger(L, img_bbox(d)[1]);
lua_settable(L, -3);
lua_pushinteger(L, 3);
lua_pushinteger(L, img_bbox(d)[2]);
lua_settable(L, -3);
lua_pushinteger(L, 4);
lua_pushinteger(L, img_bbox(d)[3]);
lua_settable(L, -3);
} else if (lua_key_eq(s,objnum)) {
if (img_objnum(d) == 0) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_objnum(d));
}
} else if (lua_key_eq(s,index)) {
if (img_index(d) == 0) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_index(d));
}
} else if (lua_key_eq(s,stream)) {
if (img_type(d) != IMG_TYPE_PDFSTREAM
|| img_pdfstream_ptr(d) == NULL
|| img_pdfstream_stream(d) == NULL
|| strlen(img_pdfstream_stream(d)) == 0) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_pdfstream_stream(d));
}
} else if (lua_key_eq(s,ref_count)) {
lua_pushinteger(L, img_luaref(d));
} else {
lua_pushnil(L);
}
return 1;
}