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Scribunto.Regex: If gsub_replace lua proc returns nothing, do not replace with empty string

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This commit is contained in:
gnosygnu 2017-04-22 08:35:53 -04:00
parent fb934457f9
commit 53c3400366
2 changed files with 17 additions and 3 deletions
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10
400_xowa/src/gplx/xowa/xtns/scribunto/libs/Scrib_lib_ustring.java
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@ -252,7 +252,8 @@ class Scrib_lib_ustring_gsub_mgr {
if (limit > -1 && repl_count == limit) break;
Regx_match rslt = rslts[i];
tmp_bfr.Add_str_u8(String_.Mid(text, pos, rslt.Find_bgn())); // NOTE: regx returns char pos (not bry); must add as String, not bry; DATE:2013-07-17
Exec_repl_itm(tmp_bfr, repl_tid, repl_bry, text, rslt);
if (!Exec_repl_itm(tmp_bfr, repl_tid, repl_bry, text, rslt)) // will be false when gsub_proc returns nothing; PAGE:en.d:tracer DATE:2017-04-22
break;
pos = rslt.Find_end();
++repl_count;
}
@ -261,7 +262,7 @@ class Scrib_lib_ustring_gsub_mgr {
tmp_bfr.Add_str_u8(String_.Mid(text, pos, text_len)); // NOTE: regx returns char pos (not bry); must add as String, not bry; DATE:2013-07-17
return tmp_bfr.To_str_and_clear();
}
private void Exec_repl_itm(Bry_bfr tmp_bfr, byte repl_tid, byte[] repl_bry, String text, Regx_match match) {
private boolean Exec_repl_itm(Bry_bfr tmp_bfr, byte repl_tid, byte[] repl_bry, String text, Regx_match match) {
switch (repl_tid) {
case Repl_tid_string:
int len = repl_bry.length;
@ -346,7 +347,9 @@ class Scrib_lib_ustring_gsub_mgr {
}
}
Keyval[] rslts = core.Interpreter().CallFunction(repl_func.Id(), luacbk_args);
if (rslts.length > 0) { // ArrayIndex check
if (rslts.length == 0)
return false;
else { // ArrayIndex check
Object rslt_obj = rslts[0].Val(); // 0th idx has result
tmp_bfr.Add_str_u8(Object_.Xto_str_strict_or_empty(rslt_obj)); // NOTE: always convert to String; rslt_obj can be int; PAGE:en.d:seven DATE:2016-04-27
}
@ -354,6 +357,7 @@ class Scrib_lib_ustring_gsub_mgr {
}
default: throw Err_.new_unhandled(repl_tid);
}
return true;
}
private static final byte Repl_tid_null = 0, Repl_tid_string = 1, Repl_tid_table = 2, Repl_tid_luacbk = 3;
public static final Scrib_lib_ustring_gsub_mgr[] Ary_empty = new Scrib_lib_ustring_gsub_mgr[0];

10
400_xowa/src/gplx/xowa/xtns/scribunto/libs/Scrib_lib_ustring__gsub__tst.java
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@ -59,6 +59,11 @@ public class Scrib_lib_ustring__gsub__tst {
fxt.Init__cbk(proc);
Exec_gsub("ab", ".", -1, proc.To_scrib_lua_proc(), "12;2"); // fails if "ab;4"
}
@Test public void Replace__proc__empty() { // PURPOSE:if a proc returns null, do not replace anything; PAGE:en.d:tracer; DATE:2017-04-22
Mock_proc__empty proc = new Mock_proc__empty(0);
fxt.Init__cbk(proc);
Exec_gsub("ab", ".", -1, proc.To_scrib_lua_proc(), "ab;0"); // fails if ";2" whic means each letter (".") replaced with null
}
@Test public void Regx__int() { // PURPOSE: do not fail if integer is passed in for @regx; PAGE:en.d:λύω DATE:2014-09-02
Exec_gsub("abcd", 1 , -1, "A" , "abcd;0");
}
@ -112,3 +117,8 @@ class Mock_proc__number extends Mock_proc_fxt { private int counter = 0;
return args;
}
}
class Mock_proc__empty extends Mock_proc_fxt { public Mock_proc__empty(int id) {super(id, "number");}
@Override public Keyval[] Exec_by_scrib(Keyval[] args) {
return Keyval_.Ary_empty;
}
}