public static void LinyeeOChunkID(CharPtr out_, CharPtr source, uint bufflen)
{
//out_ = "";
if (source[0] == '=')
{
strncpy(out_, source + 1, (int)bufflen); /* remove first char */
out_[bufflen - 1] = '\0'; /* ensures null termination */
}
else /* out = "source", or "...source" */
{
if (source[0] == '@')
{
uint l;
source = source.next(); /* skip the `@' */
bufflen -= (uint)(" '...' ".Length + 1);
l = (uint)strlen(source);
strcpy(out_, "");
if (l > bufflen)
{
source += (l - bufflen); /* get last part of file name */
strcat(out_, "...");
}
strcat(out_, source);
}
else /* out = [string "string"] */
{
uint len = strcspn(source, "\n\r"); /* stop at first newline */
bufflen -= (uint)(" [string \"...\"] ".Length + 1);
if (len > bufflen)
{
len = bufflen;
}
strcpy(out_, "[string \"");
if (source[len] != '\0') /* must truncate? */
{
strncat(out_, source, (int)len);
strcat(out_, "...");
}
else
{
strcat(out_, source);
}
strcat(out_, "\"]");
}
}
}
private static CharPtr scanformat(LinyeeState L, CharPtr strfrmt, CharPtr form)
{
CharPtr p = strfrmt;
while (p[0] != '\0' && strchr(FLAGS, p[0]) != null)
{
p = p.next(); /* skip flags */
}
if ((uint)(p - strfrmt) >= (FLAGS.Length + 1))
{
LinyeeLError(L, "invalid format (repeated flags)");
}
if (isdigit((byte)(p[0])))
{
p = p.next(); /* skip width */
}
if (isdigit((byte)(p[0])))
{
p = p.next(); /* (2 digits at most) */
}
if (p[0] == '.')
{
p = p.next();
if (isdigit((byte)(p[0])))
{
p = p.next(); /* skip precision */
}
if (isdigit((byte)(p[0])))
{
p = p.next(); /* (2 digits at most) */
}
}
if (isdigit((byte)(p[0])))
{
LinyeeLError(L, "invalid format (width or precision too long)");
}
form[0] = '%';
form = form.next();
strncpy(form, strfrmt, p - strfrmt + 1);
form += p - strfrmt + 1;
form[0] = '\0';
return(p);
}
private static CharPtr min_expand(MatchState ms, CharPtr s,
CharPtr p, CharPtr ep)
{
for (;;)
{
CharPtr res = match(ms, s, ep + 1);
if (res != null)
{
return(res);
}
else if ((s < ms.src_end) && (singlematch((byte)(s[0]), p, ep) != 0))
{
s = s.next(); /* try with one more repetition */
}
else
{
return(null);
}
}
}
public static int LinyeeGetInfo(LinyeeState L, CharPtr what, ref LinyeeDebug ar)
{
int status;
Closure f = null;
CallInfo ci = null;
LinyeeLock(L);
if (what == '>')
{
StkId func = L.top - 1;
luai_apicheck(L, TTIsFunction(func));
what = what.next(); /* skip the '>' */
f = CLValue(func);
StkId.Dec(ref L.top); /* pop function */
}
else if (ar.i_ci != 0) /* no tail call? */
{
ci = L.base_ci[ar.i_ci];
LinyeeAssert(TTIsFunction(ci.func));
f = CLValue(ci.func);
}
status = AuxGetInfo(L, what, ar, f, ci);
if (strchr(what, 'f') != null)
{
if (f == null)
{
SetNilValue(L.top);
}
else
{
SetCLValue(L, L.top, f);
}
IncrTop(L);
}
if (strchr(what, 'L') != null)
{
CollectValidLines(L, f);
}
LinyeeUnlock(L);
return(status);
}
private static void addquoted(LinyeeState L, LinyeeLBuffer b, int arg)
{
uint l;
CharPtr s = LinyeeLCheckLString(L, arg, out l);
LinyeeLAddChar(b, '"');
while ((l--) != 0)
{
switch (s[0])
{
case '"':
case '\\':
case '\n': {
LinyeeLAddChar(b, '\\');
LinyeeLAddChar(b, s[0]);
break;
}
case '\r': {
LinyeeLAddLString(b, "\\r", 2);
break;
}
case '\0': {
LinyeeLAddLString(b, "\\000", 4);
break;
}
default: {
LinyeeLAddChar(b, s[0]);
break;
}
}
s = s.next();
}
LinyeeLAddChar(b, '"');
}
private static int str_gsub(LinyeeState L)
{
uint srcl;
CharPtr src = LinyeeLCheckLString(L, 1, out srcl);
CharPtr p = LinyeeLCheckString(L, 2);
int tr = LinyeeType(L, 3);
int max_s = LinyeeLOptInt(L, 4, (int)(srcl + 1));
int anchor = 0;
if (p[0] == '^')
{
p = p.next();
anchor = 1;
}
int n = 0;
MatchState ms = new MatchState();
LinyeeLBuffer b = new LinyeeLBuffer();
LinyeeLArgCheck(L, tr == LINYEE_TNUMBER || tr == LINYEE_TSTRING ||
tr == LINYEE_TFUNCTION || tr == LINYEE_TTABLE ||
tr == LINYEE_TUSERDATA, 3,
"string/function/table expected");
LinyeeLBuffInit(L, b);
ms.L = L;
ms.matchdepth = MAXCCALLS;
ms.src_init = src;
ms.src_end = src + srcl;
while (n < max_s)
{
CharPtr e;
ms.level = 0;
LinyeeAssert(ms.matchdepth == MAXCCALLS);
e = match(ms, src, p);
if (e != null)
{
n++;
add_value(ms, b, src, e);
}
if ((e != null) && e > src) /* non empty match? */
{
src = e; /* skip it */
}
else if (src < ms.src_end)
{
char c = src[0];
src = src.next();
LinyeeLAddChar(b, c);
}
else
{
break;
}
if (anchor != 0)
{
break;
}
}
LinyeeLAddLString(b, src, (uint)(ms.src_end - src));
LinyeeLPushResult(b);
LinyeePushInteger(L, n); /* number of substitutions */
return(2);
}
private static int str_find_aux(LinyeeState L, int find)
{
uint l1, l2;
CharPtr s = LinyeeLCheckLString(L, 1, out l1);
CharPtr p = LinyeeLCheckLString(L, 2, out l2);
ptrdiff_t init = posrelat(LinyeeLOptInteger(L, 3, 1), l1) - 1;
if (init < 0)
{
init = 0;
}
else if ((uint)(init) > l1)
{
init = (ptrdiff_t)l1;
}
if ((find != 0) && ((LinyeeToBoolean(L, 4) != 0) || /* explicit request? */
strpbrk(p, SPECIALS) == null)) /* or no special characters? */
/* do a plain search */
{
CharPtr s2 = lmemfind(s + init, (uint)(l1 - init), p, (uint)(l2));
if (s2 != null)
{
LinyeePushInteger(L, s2 - s + 1);
LinyeePushInteger(L, (int)(s2 - s + l2));
return(2);
}
}
else
{
MatchState ms = new MatchState();
int anchor = 0;
if (p[0] == '^')
{
p = p.next();
anchor = 1;
}
CharPtr s1 = s + init;
ms.L = L;
ms.matchdepth = MAXCCALLS;
ms.src_init = s;
ms.src_end = s + l1;
do
{
CharPtr res;
ms.level = 0;
LinyeeAssert(ms.matchdepth == MAXCCALLS);
if ((res = match(ms, s1, p)) != null)
{
if (find != 0)
{
LinyeePushInteger(L, s1 - s + 1); /* start */
LinyeePushInteger(L, res - s); /* end */
return(push_captures(ms, null, null) + 2);
}
else
{
return(push_captures(ms, s1, res));
}
}
} while (((s1 = s1.next()) <= ms.src_end) && (anchor == 0));
}
LinyeePushNil(L); /* not found */
return(1);
}
private static CharPtr match(MatchState ms, CharPtr s, CharPtr p)
{
s = new CharPtr(s);
p = new CharPtr(p);
bool runDflt = false;
bool runInit = true;
if (ms.matchdepth-- == 0)
{
LinyeeLError(ms.L, "pattern too complex");
}
//init:
while (runInit) // Replaces "init:" in order to be compatible with Mono.
{
runInit = false; // No "goto init" until further notice.
if (p != '\0') /* end of pattern? */
{
switch (p[0])
{
case '(': { /* start capture */
if (p[1] == ')') /* position capture? */
{
s = start_capture(ms, s, p + 2, CAP_POSITION);
}
else
{
s = start_capture(ms, s, p + 1, CAP_UNFINISHED);
}
break;
}
case ')': { /* end capture */
s = end_capture(ms, s, p + 1);
break;
}
case '$': {
if (p[1] != '\0') /* is the `$' the last char in pattern? */
{
runDflt = true; //goto dflt; /* no; go to default */
}
s = (s == ms.src_end) ? s : null; /* check end of string */
break;
}
case L_ESC: { /* escaped sequences not in the format class[*+?-]? */
switch (p[1])
{
case 'b': { /* balanced string? */
s = matchbalance(ms, s, p + 2);
if (s != null)
{
p += 4;
runInit = true; //goto init; /* return match(ms, s, p+4); */
}
/* else fail (s == NULL) */
break;
}
case 'f': { /* frontier? */
CharPtr ep; char previous;
p += 2;
if (p[0] != '[')
{
LinyeeLError(ms.L, "missing " + LINYEE_QL("[") + " after " +
LINYEE_QL("%%f") + " in pattern");
}
ep = classend(ms, p); /* points to what is next */
previous = (s == ms.src_init) ? '\0' : s[-1];
if ((matchbracketclass((byte)(previous), p, ep - 1) == 0) ||
(matchbracketclass((byte)(s[0]), p, ep - 1) != 0))
{
p = ep;
runInit = true; //goto init; /* else return match(ms, s, ep); */
}
s = null; /* match failed */
break;
}
default: {
if (isdigit((byte)(p[1]))) /* capture results (%0-%9)? */
{
s = match_capture(ms, s, (byte)(p[1]));
if (s != null)
{
p += 2;
runInit = true; //goto init; /* else return match(ms, s, p+2) */
}
break;
}
runDflt = true; //goto dflt;
break;
}
}
break;
}
default: {
runDflt = true; // goto dflt
break;
}
}
}
//dflt:
if (runDflt) // Replaces "dflt:" in order to be compatible with Mono.
{ /* pattern class plus optional suffix */
runDflt = false; // no more "goto dflt" until further notice.
CharPtr ep = classend(ms, p); /* points to optional suffix */
/* does not match at least once? */
if ((s >= ms.src_end) || (singlematch((byte)(s[0]), p, ep) == 0))
{
if (ep == '*' || ep == '?' || ep == '-') /* accept empty? */
{
p = ep + 1;
runInit = true; //goto init; /* return match(ms, s, ep + 1); */
}
else /* '+' or no suffix */
{
s = null; /* fail */
}
}
else /* matched once */
{
switch (ep[0])
{
case '?': { /* optional */
CharPtr res;
if ((res = match(ms, s + 1, ep + 1)) != null)
{
s = res;
}
else
{
p = ep + 1;
runInit = true; //goto init; /* else return match(ms, s, ep+1); */
}
break;
}
case '+': { /* 1 or more repetitions */
s = s.next(); /* 1 match already done */
s = max_expand(ms, s, p, ep); // cannot fall through, repeating '*' instruction instead.
break;
}
case '*': { /* 0 or more repetitions */
s = max_expand(ms, s, p, ep);
break;
}
case '-': { /* 0 or more repetitions (minimum) */
s = min_expand(ms, s, p, ep);
break;
}
default: { /* no suffix */
s = s.next();
p = ep;
runInit = true; //goto init; /* return match(ms, s+1, ep); */
break;
}
}
}
}
}
ms.matchdepth++;
return(s);
}
private static int str_format(LinyeeState L)
{
int top = LinyeeGetTop(L);
int arg = 1;
uint sfl;
CharPtr strfrmt = LinyeeLCheckLString(L, arg, out sfl);
CharPtr strfrmt_end = strfrmt + sfl;
LinyeeLBuffer b = new LinyeeLBuffer();
LinyeeLBuffInit(L, b);
while (strfrmt < strfrmt_end)
{
if (strfrmt[0] != L_ESC)
{
LinyeeLAddChar(b, strfrmt[0]);
strfrmt = strfrmt.next();
}
else if (strfrmt[1] == L_ESC)
{
LinyeeLAddChar(b, strfrmt[0]); /* %% */
strfrmt = strfrmt + 2;
}
else
{ /* format item */
strfrmt = strfrmt.next();
CharPtr form = new char[MAX_FORMAT]; /* to store the format (`%...') */
CharPtr buff = new char[MAX_ITEM]; /* to store the formatted item */
if (++arg > top)
{
LinyeeLArgError(L, arg, "no value");
}
strfrmt = scanformat(L, strfrmt, form);
char ch = strfrmt[0];
strfrmt = strfrmt.next();
switch (ch)
{
case 'c':
{
sprintf(buff, form, (int)LinyeeLCheckNumber(L, arg));
break;
}
case 'd':
case 'i':
{
addintlen(form);
sprintf(buff, form, (LINYEE_INTFRM_T)LinyeeLCheckNumber(L, arg));
break;
}
case 'o':
case 'u':
case 'x':
case 'X':
{
addintlen(form);
sprintf(buff, form, (UNSIGNED_LINYEE_INTFRM_T)LinyeeLCheckNumber(L, arg));
break;
}
case 'e':
case 'E':
case 'f':
case 'g':
case 'G':
{
sprintf(buff, form, (double)LinyeeLCheckNumber(L, arg));
break;
}
case 'q':
{
addquoted(L, b, arg);
continue; /* skip the 'addsize' at the end */
}
case 's':
{
uint l;
CharPtr s = LinyeeLCheckLString(L, arg, out l);
if ((strchr(form, '.') == null) && l >= 100)
{
/* no precision and string is too long to be formatted;
* keep original string */
LinyeePushValue(L, arg);
LinyeeLAddValue(b);
continue; /* skip the `addsize' at the end */
}
else
{
sprintf(buff, form, s);
break;
}
}
default:
{ /* also treat cases `pnLlh' */
return(LinyeeLError(L, "invalid option " + LINYEE_QL("%%%c") + " to " +
LINYEE_QL("format"), strfrmt[-1]));
}
}
LinyeeLAddLString(b, buff, (uint)strlen(buff));
}
}
LinyeeLPushResult(b);
return(1);
}
