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Allow any character in formspec strings with escape char

This commit is contained in:
kwolekr 2013-02-24 16:00:35 -05:00
parent bdbdeab005
commit ba78194636
5 changed files with 129 additions and 56 deletions
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7
builtin/misc.lua
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@ -99,3 +99,10 @@ function minetest.setting_get_pos(name)
return minetest.string_to_pos(value)
end
function minetest.formspec_escape(str)
str = string.gsub(str, "\\", "\\\\")
str = string.gsub(str, "%[", "\\[")
str = string.gsub(str, "%]", "\\]")
return str
end

3
doc/lua_api.txt
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@ -778,6 +778,9 @@ string:trim()
minetest.pos_to_string({x=X,y=Y,z=Z}) -> "(X,Y,Z)"
^ Convert position to a printable string
minetest.string_to_pos(string) -> position
^ Same but in reverse
minetest.formspec_escape(string) -> string
^ escapes characters like [, ], and \ that can not be used in formspecs
minetest namespace reference
-----------------------------

122
src/guiFormSpecMenu.cpp
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@ -207,18 +207,18 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
Strfnd f(m_formspec_string);
while(f.atend() == false)
{
std::string type = trim(f.next("["));
std::string type = trim(f.next_esc("["));
if(type == "invsize" || type == "size")
{
v2f invsize;
invsize.X = stof(f.next(","));
invsize.X = stof(f.next_esc(","));
if(type == "size")
{
invsize.Y = stof(f.next("]"));
invsize.Y = stof(f.next_esc("]"));
}
else{
invsize.Y = stof(f.next(";"));
f.next("]");
invsize.Y = stof(f.next_esc(";"));
f.next_esc("]");
}
infostream<<"Form size ("<<invsize.X<<","<<invsize.Y<<")"<<std::endl;
@ -242,24 +242,24 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
}
else if(type == "list")
{
std::string name = f.next(";");
std::string name = f.next_esc(";");
InventoryLocation loc;
if(name == "context" || name == "current_name")
loc = m_current_inventory_location;
else
loc.deSerialize(name);
std::string listname = f.next(";");
std::string listname = f.next_esc(";");
v2s32 pos = basepos;
pos.X += stof(f.next(",")) * (float)spacing.X;
pos.Y += stof(f.next(";")) * (float)spacing.Y;
pos.X += stof(f.next_esc(",")) * (float)spacing.X;
pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
v2s32 geom;
geom.X = stoi(f.next(","));
geom.Y = stoi(f.next(";"));
geom.X = stoi(f.next_esc(","));
geom.Y = stoi(f.next_esc(";"));
infostream<<"list inv="<<name<<", listname="<<listname
<<", pos=("<<pos.X<<","<<pos.Y<<")"
<<", geom=("<<geom.X<<","<<geom.Y<<")"
<<std::endl;
std::string start_i_s = f.next("]");
std::string start_i_s = f.next_esc("]");
s32 start_i = 0;
if(start_i_s != "")
start_i = stoi(start_i_s);
@ -270,12 +270,12 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
else if(type == "image")
{
v2s32 pos = basepos;
pos.X += stof(f.next(",")) * (float)spacing.X;
pos.Y += stof(f.next(";")) * (float)spacing.Y;
pos.X += stof(f.next_esc(",")) * (float)spacing.X;
pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
v2s32 geom;
geom.X = stof(f.next(",")) * (float)imgsize.X;
geom.Y = stof(f.next(";")) * (float)imgsize.Y;
std::string name = f.next("]");
geom.X = stof(f.next_esc(",")) * (float)imgsize.X;
geom.Y = stof(f.next_esc(";")) * (float)imgsize.Y;
std::string name = f.next_esc("]");
infostream<<"image name="<<name
<<", pos=("<<pos.X<<","<<pos.Y<<")"
<<", geom=("<<geom.X<<","<<geom.Y<<")"
@ -287,12 +287,12 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
else if(type == "item_image")
{
v2s32 pos = basepos;
pos.X += stof(f.next(",")) * (float)spacing.X;
pos.Y += stof(f.next(";")) * (float)spacing.Y;
pos.X += stof(f.next_esc(",")) * (float)spacing.X;
pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
v2s32 geom;
geom.X = stof(f.next(",")) * (float)imgsize.X;
geom.Y = stof(f.next(";")) * (float)imgsize.Y;
std::string name = f.next("]");
geom.X = stof(f.next_esc(",")) * (float)imgsize.X;
geom.Y = stof(f.next_esc(";")) * (float)imgsize.Y;
std::string name = f.next_esc("]");
infostream<<"item name="<<name
<<", pos=("<<pos.X<<","<<pos.Y<<")"
<<", geom=("<<geom.X<<","<<geom.Y<<")"
@ -304,12 +304,12 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
else if(type == "background")
{
v2s32 pos = basepos;
pos.X += stof(f.next(",")) * (float)spacing.X - ((float)spacing.X-(float)imgsize.X)/2;
pos.Y += stof(f.next(";")) * (float)spacing.Y - ((float)spacing.Y-(float)imgsize.Y)/2;
pos.X += stof(f.next_esc(",")) * (float)spacing.X - ((float)spacing.X-(float)imgsize.X)/2;
pos.Y += stof(f.next_esc(";")) * (float)spacing.Y - ((float)spacing.Y-(float)imgsize.Y)/2;
v2s32 geom;
geom.X = stof(f.next(",")) * (float)spacing.X;
geom.Y = stof(f.next(";")) * (float)spacing.Y;
std::string name = f.next("]");
geom.X = stof(f.next_esc(",")) * (float)spacing.X;
geom.Y = stof(f.next_esc(";")) * (float)spacing.Y;
std::string name = f.next_esc("]");
infostream<<"image name="<<name
<<", pos=("<<pos.X<<","<<pos.Y<<")"
<<", geom=("<<geom.X<<","<<geom.Y<<")"
@ -320,8 +320,8 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
}
else if(type == "field" || type == "textarea")
{
std::string fname = f.next(";");
std::string flabel = f.next(";");
std::string fname = f.next_esc(";");
std::string flabel = f.next_esc(";");
if(fname.find(",") == std::string::npos && flabel.find(",") == std::string::npos)
{
@ -372,14 +372,14 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
fname = f.next(";");
flabel = f.next(";");
fname = f.next_esc(";");
flabel = f.next_esc(";");
if(bp_set != 2)
errorstream<<"WARNING: invalid use of positioned "<<type<<" without a size[] element"<<std::endl;
}
std::string odefault = f.next("]");
std::string odefault = f.next_esc("]");
std::string fdefault;
// fdefault may contain a variable reference, which
@ -389,6 +389,9 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
else
fdefault = odefault;
fdefault = unescape_string(fdefault);
flabel = unescape_string(flabel);
FieldSpec spec = FieldSpec(
narrow_to_wide(fname.c_str()),
narrow_to_wide(flabel.c_str()),
@ -434,15 +437,17 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
else if(type == "label")
{
v2s32 pos = padding;
pos.X += stof(f.next(",")) * (float)spacing.X;
pos.Y += stof(f.next(";")) * (float)spacing.Y;
pos.X += stof(f.next_esc(",")) * (float)spacing.X;
pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
rect = core::rect<s32>(pos.X, pos.Y+((imgsize.Y/2)-15), pos.X+300, pos.Y+((imgsize.Y/2)+15));
std::string flabel = f.next("]");
std::string flabel = f.next_esc("]");
if(bp_set != 2)
errorstream<<"WARNING: invalid use of label without a size[] element"<<std::endl;
flabel = unescape_string(flabel);
FieldSpec spec = FieldSpec(
narrow_to_wide(""),
narrow_to_wide(flabel.c_str()),
@ -455,19 +460,21 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
else if(type == "button" || type == "button_exit")
{
v2s32 pos = padding;
pos.X += stof(f.next(",")) * (float)spacing.X;
pos.Y += stof(f.next(";")) * (float)spacing.Y;
pos.X += stof(f.next_esc(",")) * (float)spacing.X;
pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
v2s32 geom;
geom.X = (stof(f.next(",")) * (float)spacing.X)-(spacing.X-imgsize.X);
pos.Y += (stof(f.next(";")) * (float)imgsize.Y)/2;
geom.X = (stof(f.next_esc(",")) * (float)spacing.X)-(spacing.X-imgsize.X);
pos.Y += (stof(f.next_esc(";")) * (float)imgsize.Y)/2;
rect = core::rect<s32>(pos.X, pos.Y-15, pos.X+geom.X, pos.Y+15);
std::string fname = f.next(";");
std::string flabel = f.next("]");
std::string fname = f.next_esc(";");
std::string flabel = f.next_esc("]");
if(bp_set != 2)
errorstream<<"WARNING: invalid use of button without a size[] element"<<std::endl;
flabel = unescape_string(flabel);
FieldSpec spec = FieldSpec(
narrow_to_wide(fname.c_str()),
narrow_to_wide(flabel.c_str()),
@ -483,20 +490,22 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
else if(type == "image_button" || type == "image_button_exit")
{
v2s32 pos = padding;
pos.X += stof(f.next(",")) * (float)spacing.X;
pos.Y += stof(f.next(";")) * (float)spacing.Y;
pos.X += stof(f.next_esc(",")) * (float)spacing.X;
pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
v2s32 geom;
geom.X = (stof(f.next(",")) * (float)spacing.X)-(spacing.X-imgsize.X);
geom.Y = (stof(f.next(";")) * (float)spacing.Y)-(spacing.Y-imgsize.Y);
geom.X = (stof(f.next_esc(",")) * (float)spacing.X)-(spacing.X-imgsize.X);
geom.Y = (stof(f.next_esc(";")) * (float)spacing.Y)-(spacing.Y-imgsize.Y);
rect = core::rect<s32>(pos.X, pos.Y, pos.X+geom.X, pos.Y+geom.Y);
std::string fimage = f.next(";");
std::string fname = f.next(";");
std::string flabel = f.next("]");
std::string fimage = f.next_esc(";");
std::string fname = f.next_esc(";");
std::string flabel = f.next_esc("]");
if(bp_set != 2)
errorstream<<"WARNING: invalid use of image_button without a size[] element"<<std::endl;
flabel = unescape_string(flabel);
FieldSpec spec = FieldSpec(
narrow_to_wide(fname.c_str()),
narrow_to_wide(flabel.c_str()),
@ -519,15 +528,15 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
else if(type == "item_image_button")
{
v2s32 pos = padding;
pos.X += stof(f.next(",")) * (float)spacing.X;
pos.Y += stof(f.next(";")) * (float)spacing.Y;
pos.X += stof(f.next_esc(",")) * (float)spacing.X;
pos.Y += stof(f.next_esc(";")) * (float)spacing.Y;
v2s32 geom;
geom.X = (stof(f.next(",")) * (float)spacing.X)-(spacing.X-imgsize.X);
geom.Y = (stof(f.next(";")) * (float)spacing.Y)-(spacing.Y-imgsize.Y);
geom.X = (stof(f.next_esc(",")) * (float)spacing.X)-(spacing.X-imgsize.X);
geom.Y = (stof(f.next_esc(";")) * (float)spacing.Y)-(spacing.Y-imgsize.Y);
rect = core::rect<s32>(pos.X, pos.Y, pos.X+geom.X, pos.Y+geom.Y);
std::string fimage = f.next(";");
std::string fname = f.next(";");
std::string flabel = f.next("]");
std::string fimage = f.next_esc(";");
std::string fname = f.next_esc(";");
std::string flabel = f.next_esc("]");
if(bp_set != 2)
errorstream<<"WARNING: invalid use of item_image_button without a size[] element"<<std::endl;
IItemDefManager *idef = m_gamedef->idef();
@ -535,6 +544,7 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
item.deSerialize(fimage, idef);
video::ITexture *texture = idef->getInventoryTexture(item.getDefinition(idef).name, m_gamedef);
std::string tooltip = item.getDefinition(idef).description;
flabel = unescape_string(flabel);
FieldSpec spec = FieldSpec(
narrow_to_wide(fname.c_str()),
narrow_to_wide(flabel.c_str()),
@ -556,7 +566,7 @@ void GUIFormSpecMenu::regenerateGui(v2u32 screensize)
else
{
// Ignore others
std::string ts = f.next("]");
std::string ts = f.next_esc("]");
infostream<<"Unknown DrawSpec: type="<<type<<", data=\""<<ts<<"\""
<<std::endl;
}

37
src/strfnd.h
View File

@ -65,6 +65,25 @@ public:
//std::cout<<"palautus=\""<<palautus<<"\""<<std::endl;
return palautus;
}
// Returns substr of tek up to the next occurence of plop that isn't escaped with '\'
std::string next_esc(std::string plop) {
size_t n, realp;
if (p >= tek.size())
return "";
realp = p;
do {
n = tek.find(plop, p);
if (n == std::string::npos || plop == "")
n = tek.length();
p = n + plop.length();
} while (n > 0 && tek[n - 1] == '\\');
return tek.substr(realp, n - realp);
}
void skip_over(std::string chars){
while(p < tek.size()){
bool is = false;
@ -128,6 +147,24 @@ public:
//std::cout<<"palautus=\""<<palautus<<"\""<<std::endl;
return palautus;
}
std::wstring next_esc(std::wstring plop) {
size_t n, realp;
if (p >= tek.size())
return L"";
realp = p;
do {
n = tek.find(plop, p);
if (n == std::wstring::npos || plop == L"")
n = tek.length();
p = n + plop.length();
} while (n > 0 && tek[n - 1] == '\\');
return tek.substr(realp, n - realp);
}
bool atend(){
if(p>=tek.size()) return true;
return false;

16
src/util/string.h
View File

@ -286,6 +286,22 @@ inline std::string wrap_rows(const std::string &from, u32 rowlen)
return to;
}
/*
Removes all \\ from a string that had been escaped (FormSpec strings)
*/
inline std::string unescape_string(std::string &s)
{
std::string res;
for (size_t i = 0; i <= s.length(); i++) {
if (s[i] == '\\')
i++;
res += s[i];
}
return res;
}
std::string translatePassword(std::string playername, std::wstring password);
size_t curl_write_data(char *ptr, size_t size, size_t nmemb, void *userdata);
u32 readFlagString(std::string str, FlagDesc *flagdesc);