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-rw-r--r--src/FbTk/Luamm.cc24
-rw-r--r--src/FbTk/Luamm.hh4
2 files changed, 28 insertions, 0 deletions
diff --git a/src/FbTk/Luamm.cc b/src/FbTk/Luamm.cc
index 8824b06..3b0c4ba 100644
--- a/src/FbTk/Luamm.cc
+++ b/src/FbTk/Luamm.cc
@@ -219,6 +219,30 @@ namespace lua {
219 l->replace(-2); 219 l->replace(-2);
220 } 220 }
221 221
222 std::string quote(const std::string &str)
223 {
224 std::string bad = "\n\\";
225 bad += '\0';
226
227 // first try to quote using normal quotes without escaping
228 if(str.find_first_of(bad + '"') == std::string::npos)
229 return '"' + str + '"';
230 else if(str.find_first_of(bad + '\'') == std::string::npos)
231 return '\'' + str + '\'';
232
233 // use long quotes
234 bad.clear();
235
236 // find the first long quote that works
237 while(str.find(']' + bad + ']') != std::string::npos)
238 bad += '=';
239
240 std::string out = '[' + bad + '[';
241 if(str.find('\n') != std::string::npos)
242 out += '\n';
243 return out + str + ']' + bad + ']';
244 }
245
222 state::state() 246 state::state()
223 : cobj(luaL_newstate()), valid(new bool(true)) 247 : cobj(luaL_newstate()), valid(new bool(true))
224 { 248 {
diff --git a/src/FbTk/Luamm.hh b/src/FbTk/Luamm.hh
index 01fb8b1..245d77b 100644
--- a/src/FbTk/Luamm.hh
+++ b/src/FbTk/Luamm.hh
@@ -139,6 +139,10 @@ namespace lua {
139 {} 139 {}
140 }; 140 };
141 141
142 // format the string in a form that can be safely read back by the lua interpreter
143 // tries to make the string a bit nicer than the lua's %q format specifier
144 std::string quote(const std::string &str);
145
142 // a fancy wrapper around lua_State 146 // a fancy wrapper around lua_State
143 class state { 147 class state {
144 lua_State *cobj; 148 lua_State *cobj;