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Scribunto: Pull 0th argument if %1 is specified and 0 groups [#393]

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gnosygnu 2019-03-20 21:41:54 -04:00
parent 71232e4402
commit 9b5d585750
2 changed files with 28 additions and 11 deletions
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14
400_xowa/src/gplx/xowa/xtns/scribunto/libs/Scrib_lib_ustring__gsub__tst.java
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@ -91,6 +91,11 @@ public class Scrib_lib_ustring__gsub__tst {
Exec_gsub("aa" , "(a)%1" , 1, "%1z", "az;1"); // capture; handle %1+; PAGE:en.w:Wikipedia:Wikipedia_Signpost/Templates/Voter/testcases; DATE:2015-08-02
Exec_gsub("a\"b'c\"d" , "([\"'])(.-)%1" , 1, "%1z", "a\"zd;1"); // capture; http://www.lua.org/pil/20.3.html; {{#invoke:test|gsub_string|a"b'c"d|(["'])(.-)%1|%1z}}
}
@Test public void Regx__capture_wo_group() {
Exec_gsub("Ab", "%u", 1, "<%0>", "<A>b;1");
Exec_gsub("Ab", "%u", 1, "<%1>", "<A>b;1"); // NOTE: %1 should be same as %0 if no matches; ISSUE#:393; DATE:2019-03-20
Exec_gsub_fail("Ab", "%u", 1, "<%2>", "invalid capture index %2 in replacement String");
}
@Test public void Regx__frontier_pattern() { // PURPOSE: handle frontier pattern; EX:"%f[%a]"; DATE:2015-07-21
Exec_gsub("a b c", "%f[%W]", 5, "()", "a() b() c();3");
Exec_gsub("abC DEF gHI JKm NOP", "%f[%a]%u+%f[%A]", Int_.Max_value, "()", "abC () gHI JKm ();2"); // based on http://lua-users.org/wiki/FrontierPattern
@ -120,6 +125,15 @@ public class Scrib_lib_ustring__gsub__tst {
private void Exec_gsub(String text, Object regx, int limit, Object repl, String expd) {
fxt.Test__proc__kvps__flat(lib, Scrib_lib_ustring.Invk_gsub, Scrib_kv_utl_.base1_many_(text, regx, repl, limit), expd);
}
private void Exec_gsub_fail(String text, Object regx, int limit, Object repl, String expd) {
try {
fxt.Test__proc__kvps__flat(lib, Scrib_lib_ustring.Invk_gsub, Scrib_kv_utl_.base1_many_(text, regx, repl, limit), expd);
} catch (Exception e) {
Gftest.Eq__bool(true, String_.Has(Err_.Message_gplx_log(e), expd));
return;
}
throw Err_.new_wo_type("expected failure");
}
}
class Mock_proc__recursive extends Mock_proc_fxt { private final Mock_scrib_fxt fxt; private final Scrib_lib lib; private final Mock_proc__recursive inner;
private final Bry_bfr bfr;

19
400_xowa/src/gplx/xowa/xtns/scribunto/libs/Scrib_lib_ustring_gsub_mgr.java
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@ -134,18 +134,21 @@ class Scrib_lib_ustring_gsub_mgr {
case Byte_ascii.Num_0: case Byte_ascii.Num_1: case Byte_ascii.Num_2: case Byte_ascii.Num_3: case Byte_ascii.Num_4:
case Byte_ascii.Num_5: case Byte_ascii.Num_6: case Byte_ascii.Num_7: case Byte_ascii.Num_8: case Byte_ascii.Num_9:
int idx = b - Byte_ascii.Num_0;
if (idx == 0) // NOTE: 0 means take result; REF.MW:if ($x === '0'); return $m[0]; PAGE:Wikipedia:Wikipedia_Signpost/Templates/Voter/testcases; DATE:2015-08-02
// REF.MW: https://github.com/wikimedia/mediawiki-extensions-Scribunto/blob/master/includes/engines/LuaCommon/UstringLibrary.php#L785-L796
// NOTE: 0 means take result; REF.MW:if ($x === '0'); return $m[0]; PAGE:Wikipedia:Wikipedia_Signpost/Templates/Voter/testcases; DATE:2015-08-02
if (idx == 0)
tmp_bfr.Add_str_u8(String_.Mid(text, match.Find_bgn(), match.Find_end()));
else { // NOTE: > 0 means get from groups if it exists; REF.MW:elseif (isset($m["m$x"])) return $m["m$x"]; PAGE:Wikipedia:Wikipedia_Signpost/Templates/Voter/testcases; DATE:2015-08-02
idx -= List_adp_.Base1;
if (idx < match.Groups().length) { // retrieve numbered capture; TODO_OLD: support more than 9 captures
Regx_group grp = match.Groups()[idx];
// NOTE: > 0 means get from groups if it exists; REF.MW:elseif (isset($m["m$x"])) return $m["m$x"]; PAGE:Wikipedia:Wikipedia_Signpost/Templates/Voter/testcases; DATE:2015-08-02
else if (idx - 1 < match.Groups().length) { // retrieve numbered capture; TODO_OLD: support more than 9 captures
Regx_group grp = match.Groups()[idx - 1];
tmp_bfr.Add_str_u8(String_.Mid(text, grp.Bgn(), grp.End())); // NOTE: grp.Bgn() / .End() is for String pos (bry pos will fail for utf8 strings)
}
else {
tmp_bfr.Add_byte(Byte_ascii.Percent);
tmp_bfr.Add_byte(b);
// NOTE: 1 per MW "Match undocumented Lua String.gsub behavior"; PAGE:en.d:Wiktionary:Scripts ISSUE#:393; DATE:2019-03-20
else if (idx == 1) {
tmp_bfr.Add_str_u8(String_.Mid(text, match.Find_bgn(), match.Find_end()));
}
else {
throw Err_.new_wo_type("invalid capture index %" + Char_.To_str(b) + " in replacement String");
}
break;
case Byte_ascii.Percent: