image *new_image(void)
{
image *p = xtalloc(1, image);
set_wd_running(p);
set_ht_running(p);
set_dp_running(p);
img_transform(p) = 0;
img_dict(p) = NULL;
img_dictref(p) = LUA_NOREF;
return p;
}
image_dict *new_image_dict(void)
{
image_dict *p = xtalloc(1, image_dict);
memset(p, 0, sizeof(image_dict));
set_wd_running(p);
set_ht_running(p);
set_dp_running(p);
img_transform(p) = 0;
img_pagenum(p) = 1;
img_type(p) = IMG_TYPE_NONE;
img_pagebox(p) = PDF_BOX_SPEC_MEDIA;
img_unset_bbox(p);
img_unset_group(p);
img_state(p) = DICT_NEW;
/*tex A value of -1 means unused while the used counts from 0 */
img_index(p) = -1;
img_luaref(p) = 0;
img_errorlevel(p) = pdf_inclusion_errorlevel;
fix_pdf_version(static_pdf);
img_pdfmajorversion(p) = pdf_major_version;
img_pdfminorversion(p) = pdf_minor_version;
return p;
}
static void lua_to_image(lua_State * L, image * a)
{ /* value key table ... */
int i;
image_dict *d = img_dict(a);
assert(d != NULL);
lua_pushstring(L, IMG_ENV); /* s v k t ... */
lua_gettable(L, LUA_REGISTRYINDEX); /* t v k t ... */
lua_pushvalue(L, -3); /* k t v k t ... */
lua_gettable(L, -2); /* i? t v k t ... */
if (!lua_isnumber(L, -1)) /* !i t v k t ... */
luaL_error(L, "lua_to_image(): %s is not a valid image key",
lua_tostring(L, -4));
i = (int) lua_tointeger(L, -1); /* i t v k t ... */
lua_pop(L, 2); /* v k t ... */
switch (i) {
case P_WIDTH:
if (lua_isnil(L, -1))
set_wd_running(a);
else if (lua_type(L, -1) == LUA_TNUMBER)
img_width(a) = (int) lua_tointeger(L, -1);
else if (lua_type(L, -1) == LUA_TSTRING)
img_width(a) = dimen_to_number(L, lua_tostring(L, -1));
else
luaL_error(L,
"image.width needs integer or nil value or dimension string");
break;
case P_HEIGHT:
if (lua_isnil(L, -1))
set_ht_running(a);
else if (lua_type(L, -1) == LUA_TNUMBER)
img_height(a) = (int) lua_tointeger(L, -1);
else if (lua_type(L, -1) == LUA_TSTRING)
img_height(a) = dimen_to_number(L, lua_tostring(L, -1));
else
luaL_error(L,
"image.height needs integer or nil value or dimension string");
break;
case P_DEPTH:
if (lua_isnil(L, -1))
set_dp_running(a);
else if (lua_type(L, -1) == LUA_TNUMBER)
img_depth(a) = (int) lua_tointeger(L, -1);
else if (lua_type(L, -1) == LUA_TSTRING)
img_depth(a) = dimen_to_number(L, lua_tostring(L, -1));
else
luaL_error(L,
"image.depth needs integer or nil value or dimension string");
break;
case P_TRANSFORM:
if (lua_isnumber(L, -1))
img_transform(a) = (int) lua_tointeger(L, -1);
else
luaL_error(L, "image.transform needs integer value");
break;
/* now follow all image_dict entries */
case P_FILENAME:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.filename is now read-only");
if (img_type(d) == IMG_TYPE_PDFSTREAM)
luaL_error(L, "image.filename can't be used with image.stream");
if (lua_isstring(L, -1)) {
xfree(img_filename(d));
img_filename(d) = xstrdup(lua_tostring(L, -1));
} else
luaL_error(L, "image.filename needs string value");
break;
case P_VISIBLEFILENAME:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.visiblefilename is now read-only");
if (img_type(d) == IMG_TYPE_PDFSTREAM)
luaL_error(L,
"image.visiblefilename can't be used with image.stream");
if (lua_isstring(L, -1)) {
xfree(img_visiblefilename(d));
img_visiblefilename(d) = xstrdup(lua_tostring(L, -1));
} else
luaL_error(L, "image.visiblefilename needs string value");
break;
case P_ATTR:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.attr is now read-only");
if (lua_isstring(L, -1) || lua_isnil(L, -1)) {
xfree(img_attr(d));
if (lua_isstring(L, -1))
img_attr(d) = xstrdup(lua_tostring(L, -1));
} else
luaL_error(L, "image.attr needs string or nil value");
break;
case P_PAGE:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.page is now read-only");
if (lua_type(L, -1) == LUA_TSTRING) {
xfree(img_pagename(d));
img_pagename(d) = xstrdup(lua_tostring(L, -1));
img_pagenum(d) = 0;
} else if (lua_type(L, -1) == LUA_TNUMBER) {
img_pagenum(d) = (int) lua_tointeger(L, -1);
xfree(img_pagename(d));
} else
luaL_error(L, "image.page needs integer or string value");
break;
case P_COLORSPACE:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.colorspace is now read-only");
if (lua_isnil(L, -1))
img_colorspace(d) = 0;
else if (lua_isnumber(L, -1))
img_colorspace(d) = (int) lua_tointeger(L, -1);
else
luaL_error(L, "image.colorspace needs integer or nil value");
break;
case P_PAGEBOX:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.pagebox is now read-only");
if (lua_isnil(L, -1))
img_pagebox(d) = PDF_BOX_SPEC_NONE;
else if (lua_isstring(L, -1))
img_pagebox(d) = luaL_checkoption(L, -1, "none", pdfboxspec_s);
else
luaL_error(L, "image.pagebox needs string or nil value");
break;
case P_BBOX:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.bbox is now read-only");
if (!lua_istable(L, -1))
luaL_error(L, "image.bbox needs table value");
if (lua_objlen(L, -1) != 4)
luaL_error(L, "image.bbox table must have exactly 4 elements");
for (i = 1; i <= 4; i++) { /* v k t ... */
lua_pushinteger(L, i); /* idx v k t ... */
lua_gettable(L, -2); /* int v k t ... */
if (lua_type(L, -1) == LUA_TNUMBER)
img_bbox(d)[i - 1] = (int) lua_tointeger(L, -1);
else if (lua_type(L, -1) == LUA_TSTRING)
img_bbox(d)[i - 1] = dimen_to_number(L, lua_tostring(L, -1));
else
luaL_error(L,
"image.bbox table needs integer value or dimension string elements");
lua_pop(L, 1); /* v k t ... */
}
img_set_bbox(d);
break;
case P_STREAM:
if (img_filename(d) != NULL)
luaL_error(L, "image.stream can't be used with image.filename");
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.stream is now read-only");
if (img_pdfstream_ptr(d) == NULL)
new_img_pdfstream_struct(d);
xfree(img_pdfstream_stream(d));
img_pdfstream_stream(d) = xstrdup(lua_tostring(L, -1));
img_type(d) = IMG_TYPE_PDFSTREAM;
break;
case P_FILEPATH:
case P_TOTALPAGES:
case P_XSIZE:
case P_YSIZE:
case P_XRES:
case P_YRES:
case P_ROTATION:
case P_IMAGETYPE:
case P_OBJNUM:
case P_INDEX:
case P_COLORDEPTH:
luaL_error(L, "image.%s is a read-only variable", img_parms[i].name);
break;
default:
assert(0);
} /* v k t ... */
}
static void lua_to_image(lua_State * L, image * a, image_dict * d)
{
int i, t;
const char *s;
s = lua_tostring(L,-2);
t = lua_type(L, -1);
if (lua_key_eq(s,width)) {
if (t == LUA_TNIL) {
set_wd_running(a);
} else if (t == LUA_TNUMBER) {
img_width(a) = (int) lua_roundnumber(L, -1);
} else if (t == LUA_TSTRING) {
img_width(a) = dimen_to_number(L, lua_tostring(L, -1));
} else {
luaL_error(L, "image.width needs integer or nil value or dimension string");
}
} else if (lua_key_eq(s,height)) {
if (t == LUA_TNIL) {
set_ht_running(a);
} else if (t == LUA_TNUMBER) {
img_height(a) = (int) lua_roundnumber(L, -1);
} else if (t == LUA_TSTRING) {
img_height(a) = dimen_to_number(L, lua_tostring(L, -1));
} else {
luaL_error(L, "image.height needs integer or nil value or dimension string");
}
} else if (lua_key_eq(s,depth)) {
if (t == LUA_TNIL) {
set_dp_running(a);
} else if (t == LUA_TNUMBER) {
img_depth(a) = (int) lua_roundnumber(L, -1);
} else if (t == LUA_TSTRING) {
img_depth(a) = dimen_to_number(L, lua_tostring(L, -1));
} else {
luaL_error(L, "image.depth needs integer or nil value or dimension string");
}
} else if (lua_key_eq(s,transform)) {
if (t == LUA_TNUMBER) {
img_transform(a) = (int) lua_tointeger(L, -1);
} else {
luaL_error(L, "image.transform needs integer value");
}
} else if (lua_key_eq(s,filename)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.filename is now read-only");
} else if (img_type(d) == IMG_TYPE_PDFSTREAM) {
luaL_error(L, "image.filename can't be used with image.stream");
} else if (t == LUA_TSTRING) {
xfree(img_filename(d));
img_filename(d) = xstrdup(lua_tostring(L, -1));
} else {
luaL_error(L, "image.filename needs string value");
}
} else if (lua_key_eq(s,visiblefilename)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.visiblefilename is now read-only");
} else if (img_type(d) == IMG_TYPE_PDFSTREAM) {
luaL_error(L, "image.visiblefilename can't be used with image.stream");
} else if (t == LUA_TSTRING) {
xfree(img_visiblefilename(d));
img_visiblefilename(d) = xstrdup(lua_tostring(L, -1));
} else {
luaL_error(L, "image.visiblefilename needs string value");
}
} else if (lua_key_eq(s,attr)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.attr is now read-only");
} else if (t == LUA_TSTRING) {
xfree(img_attr(d));
img_attr(d) = xstrdup(lua_tostring(L, -1));
} else if (t == LUA_TNIL) {
xfree(img_attr(d));
} else {
luaL_error(L, "image.attr needs string or nil value");
}
} else if (lua_key_eq(s,page)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.page is now read-only");
} else if (t == LUA_TSTRING) {
xfree(img_pagename(d));
img_pagename(d) = xstrdup(lua_tostring(L, -1));
img_pagenum(d) = 0;
} else if (t == LUA_TNUMBER) {
img_pagenum(d) = (int) lua_tointeger(L, -1);
xfree(img_pagename(d));
} else {
luaL_error(L, "image.page needs integer or string value");
}
} else if (lua_key_eq(s,colorspace)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.colorspace is now read-only");
} else if (t == LUA_TNIL) {
img_colorspace(d) = 0;
} else if (t == LUA_TNUMBER) {
img_colorspace(d) = (int) lua_tointeger(L, -1);
} else {
luaL_error(L, "image.colorspace needs integer or nil value");
}
} else if (lua_key_eq(s,pagebox)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.pagebox is now read-only");
} else if (t == LUA_TNIL) {
img_pagebox(d) = PDF_BOX_SPEC_MEDIA;
} else if (t == LUA_TNUMBER) {
i = lua_tointeger(L,-1);
if (i < 0 || i >= img_pageboxes_max) {
img_pagebox(d) = PDF_BOX_SPEC_MEDIA;
} else {
img_pagebox(d) = i;
}
} else if (t == LUA_TSTRING) {
img_pagebox(d) = PDF_BOX_SPEC_MEDIA;
for (i = 0; i < img_pageboxes_max; i++) {
lua_rawgeti(L, LUA_REGISTRYINDEX, img_pageboxes[i]);
if (lua_rawequal(L,-1,-2)) {
img_pagebox(d) = i;
lua_pop(L, 1);
break;
} else {
lua_pop(L, 1);
}
}
} else {
luaL_error(L, "image.pagebox needs string, number or nil value");
}
} else if (lua_key_eq(s,keepopen)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.keepopen is now read-only");
} else if (t != LUA_TBOOLEAN) {
luaL_error(L, "image.bbox needs boolean value");
} else {
img_keepopen(d) = lua_toboolean(L, -1);
}
} else if (lua_key_eq(s,bbox)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.bbox is now read-only");
} else if (t != LUA_TTABLE) {
luaL_error(L, "image.bbox needs table value");
} else if (lua_rawlen(L, -1) != 4) {
luaL_error(L, "image.bbox table must have exactly 4 elements");
} else {
for (i = 1; i <= 4; i++) { /* v k t ... */
lua_pushinteger(L, i); /* idx v k t ... */
lua_gettable(L, -2); /* int v k t ... */
t = lua_type(L, -1);
if (t == LUA_TNUMBER) {
img_bbox(d)[i - 1] = (int) lua_roundnumber(L, -1);
} else if (t == LUA_TSTRING) {
img_bbox(d)[i - 1] = dimen_to_number(L, lua_tostring(L, -1));
} else {
luaL_error(L, "image.bbox table needs integer value or dimension string elements");
}
lua_pop(L, 1); /* v k t ... */
}
img_set_bbox(d);
}
} else if (lua_key_eq(s,stream)) {
if (img_filename(d) != NULL) {
luaL_error(L, "image.stream can't be used with image.filename");
} else if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.stream is now read-only");
} else {
if (img_pdfstream_ptr(d) == NULL) {
new_img_pdfstream_struct(d);
}
xfree(img_pdfstream_stream(d));
img_pdfstream_stream(d) = xstrdup(lua_tostring(L, -1));
img_type(d) = IMG_TYPE_PDFSTREAM;
}
} else {
luaL_error(L, "image.%s can not be set", s);
}
}
