From 637177eb1397ef1800027bccd50dbdc1af29a15b Mon Sep 17 00:00:00 2001 From: David Walter Seikel Date: Mon, 13 Jan 2014 21:08:31 +1000 Subject: Remove LuaJIT source, we can use packaged LuaJIT 2.0 release now. Also some cleanups related to the other library removals. --- libraries/luajit-2.0/src/lib_string.c | 855 ---------------------------------- 1 file changed, 855 deletions(-) delete mode 100644 libraries/luajit-2.0/src/lib_string.c (limited to 'libraries/luajit-2.0/src/lib_string.c') diff --git a/libraries/luajit-2.0/src/lib_string.c b/libraries/luajit-2.0/src/lib_string.c deleted file mode 100644 index 5cbe6e4..0000000 --- a/libraries/luajit-2.0/src/lib_string.c +++ /dev/null @@ -1,855 +0,0 @@ -/* -** String library. -** Copyright (C) 2005-2011 Mike Pall. See Copyright Notice in luajit.h -** -** Major portions taken verbatim or adapted from the Lua interpreter. -** Copyright (C) 1994-2008 Lua.org, PUC-Rio. See Copyright Notice in lua.h -*/ - -#include - -#define lib_string_c -#define LUA_LIB - -#include "lua.h" -#include "lauxlib.h" -#include "lualib.h" - -#include "lj_obj.h" -#include "lj_gc.h" -#include "lj_err.h" -#include "lj_str.h" -#include "lj_tab.h" -#include "lj_state.h" -#include "lj_ff.h" -#include "lj_bcdump.h" -#include "lj_char.h" -#include "lj_lib.h" - -/* ------------------------------------------------------------------------ */ - -#define LJLIB_MODULE_string - -LJLIB_ASM(string_len) LJLIB_REC(.) -{ - lj_lib_checkstr(L, 1); - return FFH_RETRY; -} - -LJLIB_ASM(string_byte) LJLIB_REC(string_range 0) -{ - GCstr *s = lj_lib_checkstr(L, 1); - int32_t len = (int32_t)s->len; - int32_t start = lj_lib_optint(L, 2, 1); - int32_t stop = lj_lib_optint(L, 3, start); - int32_t n, i; - const unsigned char *p; - if (stop < 0) stop += len+1; - if (start < 0) start += len+1; - if (start <= 0) start = 1; - if (stop > len) stop = len; - if (start > stop) return FFH_RES(0); /* Empty interval: return no results. */ - start--; - n = stop - start; - if ((uint32_t)n > LUAI_MAXCSTACK) - lj_err_caller(L, LJ_ERR_STRSLC); - lj_state_checkstack(L, (MSize)n); - p = (const unsigned char *)strdata(s) + start; - for (i = 0; i < n; i++) - setintV(L->base + i-1, p[i]); - return FFH_RES(n); -} - -LJLIB_ASM(string_char) -{ - int i, nargs = (int)(L->top - L->base); - char *buf = lj_str_needbuf(L, &G(L)->tmpbuf, (size_t)nargs); - for (i = 1; i <= nargs; i++) { - int32_t k = lj_lib_checkint(L, i); - if (!checku8(k)) - lj_err_arg(L, i, LJ_ERR_BADVAL); - buf[i-1] = (char)k; - } - setstrV(L, L->base-1, lj_str_new(L, buf, (size_t)nargs)); - return FFH_RES(1); -} - -LJLIB_ASM(string_sub) LJLIB_REC(string_range 1) -{ - lj_lib_checkstr(L, 1); - lj_lib_checkint(L, 2); - setintV(L->base+2, lj_lib_optint(L, 3, -1)); - return FFH_RETRY; -} - -LJLIB_ASM(string_rep) -{ - GCstr *s = lj_lib_checkstr(L, 1); - int32_t len = (int32_t)s->len; - int32_t k = lj_lib_checkint(L, 2); - int64_t tlen = (int64_t)k * len; - const char *src; - char *buf; - if (k <= 0) return FFH_RETRY; - if (tlen > LJ_MAX_STR) - lj_err_caller(L, LJ_ERR_STROV); - buf = lj_str_needbuf(L, &G(L)->tmpbuf, (MSize)tlen); - if (len <= 1) return FFH_RETRY; /* ASM code only needed buffer resize. */ - src = strdata(s); - do { - int32_t i = 0; - do { *buf++ = src[i++]; } while (i < len); - } while (--k > 0); - setstrV(L, L->base-1, lj_str_new(L, G(L)->tmpbuf.buf, (size_t)tlen)); - return FFH_RES(1); -} - -LJLIB_ASM(string_reverse) -{ - GCstr *s = lj_lib_checkstr(L, 1); - lj_str_needbuf(L, &G(L)->tmpbuf, s->len); - return FFH_RETRY; -} -LJLIB_ASM_(string_lower) -LJLIB_ASM_(string_upper) - -/* ------------------------------------------------------------------------ */ - -static int writer_buf(lua_State *L, const void *p, size_t size, void *b) -{ - luaL_addlstring((luaL_Buffer *)b, (const char *)p, size); - UNUSED(L); - return 0; -} - -LJLIB_CF(string_dump) -{ - GCfunc *fn = lj_lib_checkfunc(L, 1); - int strip = L->base+1 < L->top && tvistruecond(L->base+1); - luaL_Buffer b; - L->top = L->base+1; - luaL_buffinit(L, &b); - if (!isluafunc(fn) || lj_bcwrite(L, funcproto(fn), writer_buf, &b, strip)) - lj_err_caller(L, LJ_ERR_STRDUMP); - luaL_pushresult(&b); - return 1; -} - -/* ------------------------------------------------------------------------ */ - -/* macro to `unsign' a character */ -#define uchar(c) ((unsigned char)(c)) - -#define CAP_UNFINISHED (-1) -#define CAP_POSITION (-2) - -typedef struct MatchState { - const char *src_init; /* init of source string */ - const char *src_end; /* end (`\0') of source string */ - lua_State *L; - int level; /* total number of captures (finished or unfinished) */ - struct { - const char *init; - ptrdiff_t len; - } capture[LUA_MAXCAPTURES]; -} MatchState; - -#define L_ESC '%' -#define SPECIALS "^$*+?.([%-" - -static int check_capture(MatchState *ms, int l) -{ - l -= '1'; - if (l < 0 || l >= ms->level || ms->capture[l].len == CAP_UNFINISHED) - lj_err_caller(ms->L, LJ_ERR_STRCAPI); - return l; -} - -static int capture_to_close(MatchState *ms) -{ - int level = ms->level; - for (level--; level>=0; level--) - if (ms->capture[level].len == CAP_UNFINISHED) return level; - lj_err_caller(ms->L, LJ_ERR_STRPATC); - return 0; /* unreachable */ -} - -static const char *classend(MatchState *ms, const char *p) -{ - switch (*p++) { - case L_ESC: - if (*p == '\0') - lj_err_caller(ms->L, LJ_ERR_STRPATE); - return p+1; - case '[': - if (*p == '^') p++; - do { /* look for a `]' */ - if (*p == '\0') - lj_err_caller(ms->L, LJ_ERR_STRPATM); - if (*(p++) == L_ESC && *p != '\0') - p++; /* skip escapes (e.g. `%]') */ - } while (*p != ']'); - return p+1; - default: - return p; - } -} - -static const unsigned char match_class_map[32] = { - 0,LJ_CHAR_ALPHA,0,LJ_CHAR_CNTRL,LJ_CHAR_DIGIT,0,0,LJ_CHAR_GRAPH,0,0,0,0, - LJ_CHAR_LOWER,0,0,0,LJ_CHAR_PUNCT,0,0,LJ_CHAR_SPACE,0, - LJ_CHAR_UPPER,0,LJ_CHAR_ALNUM,LJ_CHAR_XDIGIT,0,0,0,0,0,0,0 -}; - -static int match_class(int c, int cl) -{ - if ((cl & 0xc0) == 0x40) { - int t = match_class_map[(cl&0x1f)]; - if (t) { - t = lj_char_isa(c, t); - return (cl & 0x20) ? t : !t; - } - if (cl == 'z') return c == 0; - if (cl == 'Z') return c != 0; - } - return (cl == c); -} - -static int matchbracketclass(int c, const char *p, const char *ec) -{ - int sig = 1; - if (*(p+1) == '^') { - sig = 0; - p++; /* skip the `^' */ - } - while (++p < ec) { - if (*p == L_ESC) { - p++; - if (match_class(c, uchar(*p))) - return sig; - } - else if ((*(p+1) == '-') && (p+2 < ec)) { - p+=2; - if (uchar(*(p-2)) <= c && c <= uchar(*p)) - return sig; - } - else if (uchar(*p) == c) return sig; - } - return !sig; -} - -static int singlematch(int c, const char *p, const char *ep) -{ - switch (*p) { - case '.': return 1; /* matches any char */ - case L_ESC: return match_class(c, uchar(*(p+1))); - case '[': return matchbracketclass(c, p, ep-1); - default: return (uchar(*p) == c); - } -} - -static const char *match(MatchState *ms, const char *s, const char *p); - -static const char *matchbalance(MatchState *ms, const char *s, const char *p) -{ - if (*p == 0 || *(p+1) == 0) - lj_err_caller(ms->L, LJ_ERR_STRPATU); - if (*s != *p) { - return NULL; - } else { - int b = *p; - int e = *(p+1); - int cont = 1; - while (++s < ms->src_end) { - if (*s == e) { - if (--cont == 0) return s+1; - } else if (*s == b) { - cont++; - } - } - } - return NULL; /* string ends out of balance */ -} - -static const char *max_expand(MatchState *ms, const char *s, - const char *p, const char *ep) -{ - ptrdiff_t i = 0; /* counts maximum expand for item */ - while ((s+i)src_end && singlematch(uchar(*(s+i)), p, ep)) - i++; - /* keeps trying to match with the maximum repetitions */ - while (i>=0) { - const char *res = match(ms, (s+i), ep+1); - if (res) return res; - i--; /* else didn't match; reduce 1 repetition to try again */ - } - return NULL; -} - -static const char *min_expand(MatchState *ms, const char *s, - const char *p, const char *ep) -{ - for (;;) { - const char *res = match(ms, s, ep+1); - if (res != NULL) - return res; - else if (ssrc_end && singlematch(uchar(*s), p, ep)) - s++; /* try with one more repetition */ - else - return NULL; - } -} - -static const char *start_capture(MatchState *ms, const char *s, - const char *p, int what) -{ - const char *res; - int level = ms->level; - if (level >= LUA_MAXCAPTURES) lj_err_caller(ms->L, LJ_ERR_STRCAPN); - ms->capture[level].init = s; - ms->capture[level].len = what; - ms->level = level+1; - if ((res=match(ms, s, p)) == NULL) /* match failed? */ - ms->level--; /* undo capture */ - return res; -} - -static const char *end_capture(MatchState *ms, const char *s, - const char *p) -{ - int l = capture_to_close(ms); - const char *res; - ms->capture[l].len = s - ms->capture[l].init; /* close capture */ - if ((res = match(ms, s, p)) == NULL) /* match failed? */ - ms->capture[l].len = CAP_UNFINISHED; /* undo capture */ - return res; -} - -static const char *match_capture(MatchState *ms, const char *s, int l) -{ - size_t len; - l = check_capture(ms, l); - len = (size_t)ms->capture[l].len; - if ((size_t)(ms->src_end-s) >= len && - memcmp(ms->capture[l].init, s, len) == 0) - return s+len; - else - return NULL; -} - -static const char *match(MatchState *ms, const char *s, const char *p) -{ - init: /* using goto's to optimize tail recursion */ - switch (*p) { - case '(': /* start capture */ - if (*(p+1) == ')') /* position capture? */ - return start_capture(ms, s, p+2, CAP_POSITION); - else - return start_capture(ms, s, p+1, CAP_UNFINISHED); - case ')': /* end capture */ - return end_capture(ms, s, p+1); - case L_ESC: - switch (*(p+1)) { - case 'b': /* balanced string? */ - s = matchbalance(ms, s, p+2); - if (s == NULL) return NULL; - p+=4; - goto init; /* else return match(ms, s, p+4); */ - case 'f': { /* frontier? */ - const char *ep; char previous; - p += 2; - if (*p != '[') - lj_err_caller(ms->L, LJ_ERR_STRPATB); - ep = classend(ms, p); /* points to what is next */ - previous = (s == ms->src_init) ? '\0' : *(s-1); - if (matchbracketclass(uchar(previous), p, ep-1) || - !matchbracketclass(uchar(*s), p, ep-1)) return NULL; - p=ep; - goto init; /* else return match(ms, s, ep); */ - } - default: - if (lj_char_isdigit(uchar(*(p+1)))) { /* capture results (%0-%9)? */ - s = match_capture(ms, s, uchar(*(p+1))); - if (s == NULL) return NULL; - p+=2; - goto init; /* else return match(ms, s, p+2) */ - } - goto dflt; /* case default */ - } - case '\0': /* end of pattern */ - return s; /* match succeeded */ - case '$': - if (*(p+1) == '\0') /* is the `$' the last char in pattern? */ - return (s == ms->src_end) ? s : NULL; /* check end of string */ - else - goto dflt; - default: dflt: { /* it is a pattern item */ - const char *ep = classend(ms, p); /* points to what is next */ - int m = ssrc_end && singlematch(uchar(*s), p, ep); - switch (*ep) { - case '?': { /* optional */ - const char *res; - if (m && ((res=match(ms, s+1, ep+1)) != NULL)) - return res; - p=ep+1; - goto init; /* else return match(ms, s, ep+1); */ - } - case '*': /* 0 or more repetitions */ - return max_expand(ms, s, p, ep); - case '+': /* 1 or more repetitions */ - return (m ? max_expand(ms, s+1, p, ep) : NULL); - case '-': /* 0 or more repetitions (minimum) */ - return min_expand(ms, s, p, ep); - default: - if (!m) return NULL; - s++; p=ep; - goto init; /* else return match(ms, s+1, ep); */ - } - } - } -} - -static const char *lmemfind(const char *s1, size_t l1, - const char *s2, size_t l2) -{ - if (l2 == 0) { - return s1; /* empty strings are everywhere */ - } else if (l2 > l1) { - return NULL; /* avoids a negative `l1' */ - } else { - const char *init; /* to search for a `*s2' inside `s1' */ - l2--; /* 1st char will be checked by `memchr' */ - l1 = l1-l2; /* `s2' cannot be found after that */ - while (l1 > 0 && (init = (const char *)memchr(s1, *s2, l1)) != NULL) { - init++; /* 1st char is already checked */ - if (memcmp(init, s2+1, l2) == 0) { - return init-1; - } else { /* correct `l1' and `s1' to try again */ - l1 -= (size_t)(init-s1); - s1 = init; - } - } - return NULL; /* not found */ - } -} - -static void push_onecapture(MatchState *ms, int i, const char *s, const char *e) -{ - if (i >= ms->level) { - if (i == 0) /* ms->level == 0, too */ - lua_pushlstring(ms->L, s, (size_t)(e - s)); /* add whole match */ - else - lj_err_caller(ms->L, LJ_ERR_STRCAPI); - } else { - ptrdiff_t l = ms->capture[i].len; - if (l == CAP_UNFINISHED) lj_err_caller(ms->L, LJ_ERR_STRCAPU); - if (l == CAP_POSITION) - lua_pushinteger(ms->L, ms->capture[i].init - ms->src_init + 1); - else - lua_pushlstring(ms->L, ms->capture[i].init, (size_t)l); - } -} - -static int push_captures(MatchState *ms, const char *s, const char *e) -{ - int i; - int nlevels = (ms->level == 0 && s) ? 1 : ms->level; - luaL_checkstack(ms->L, nlevels, "too many captures"); - for (i = 0; i < nlevels; i++) - push_onecapture(ms, i, s, e); - return nlevels; /* number of strings pushed */ -} - -static ptrdiff_t posrelat(ptrdiff_t pos, size_t len) -{ - /* relative string position: negative means back from end */ - if (pos < 0) pos += (ptrdiff_t)len + 1; - return (pos >= 0) ? pos : 0; -} - -static int str_find_aux(lua_State *L, int find) -{ - size_t l1, l2; - const char *s = luaL_checklstring(L, 1, &l1); - const char *p = luaL_checklstring(L, 2, &l2); - ptrdiff_t init = posrelat(luaL_optinteger(L, 3, 1), l1) - 1; - if (init < 0) - init = 0; - else if ((size_t)(init) > l1) - init = (ptrdiff_t)l1; - if (find && (lua_toboolean(L, 4) || /* explicit request? */ - strpbrk(p, SPECIALS) == NULL)) { /* or no special characters? */ - /* do a plain search */ - const char *s2 = lmemfind(s+init, l1-(size_t)init, p, l2); - if (s2) { - lua_pushinteger(L, s2-s+1); - lua_pushinteger(L, s2-s+(ptrdiff_t)l2); - return 2; - } - } else { - MatchState ms; - int anchor = (*p == '^') ? (p++, 1) : 0; - const char *s1=s+init; - ms.L = L; - ms.src_init = s; - ms.src_end = s+l1; - do { - const char *res; - ms.level = 0; - if ((res=match(&ms, s1, p)) != NULL) { - if (find) { - lua_pushinteger(L, s1-s+1); /* start */ - lua_pushinteger(L, res-s); /* end */ - return push_captures(&ms, NULL, 0) + 2; - } else { - return push_captures(&ms, s1, res); - } - } - } while (s1++ < ms.src_end && !anchor); - } - lua_pushnil(L); /* not found */ - return 1; -} - -LJLIB_CF(string_find) -{ - return str_find_aux(L, 1); -} - -LJLIB_CF(string_match) -{ - return str_find_aux(L, 0); -} - -LJLIB_NOREG LJLIB_CF(string_gmatch_aux) -{ - const char *p = strVdata(lj_lib_upvalue(L, 2)); - GCstr *str = strV(lj_lib_upvalue(L, 1)); - const char *s = strdata(str); - TValue *tvpos = lj_lib_upvalue(L, 3); - const char *src = s + tvpos->u32.lo; - MatchState ms; - ms.L = L; - ms.src_init = s; - ms.src_end = s + str->len; - for (; src <= ms.src_end; src++) { - const char *e; - ms.level = 0; - if ((e = match(&ms, src, p)) != NULL) { - int32_t pos = (int32_t)(e - s); - if (e == src) pos++; /* Ensure progress for empty match. */ - tvpos->u32.lo = (uint32_t)pos; - return push_captures(&ms, src, e); - } - } - return 0; /* not found */ -} - -LJLIB_CF(string_gmatch) -{ - lj_lib_checkstr(L, 1); - lj_lib_checkstr(L, 2); - L->top = L->base+3; - (L->top-1)->u64 = 0; - lj_lib_pushcc(L, lj_cf_string_gmatch_aux, FF_string_gmatch_aux, 3); - return 1; -} - -static void add_s(MatchState *ms, luaL_Buffer *b, const char *s, const char *e) -{ - size_t l, i; - const char *news = lua_tolstring(ms->L, 3, &l); - for (i = 0; i < l; i++) { - if (news[i] != L_ESC) { - luaL_addchar(b, news[i]); - } else { - i++; /* skip ESC */ - if (!lj_char_isdigit(uchar(news[i]))) { - luaL_addchar(b, news[i]); - } else if (news[i] == '0') { - luaL_addlstring(b, s, (size_t)(e - s)); - } else { - push_onecapture(ms, news[i] - '1', s, e); - luaL_addvalue(b); /* add capture to accumulated result */ - } - } - } -} - -static void add_value(MatchState *ms, luaL_Buffer *b, - const char *s, const char *e) -{ - lua_State *L = ms->L; - switch (lua_type(L, 3)) { - case LUA_TNUMBER: - case LUA_TSTRING: { - add_s(ms, b, s, e); - return; - } - case LUA_TFUNCTION: { - int n; - lua_pushvalue(L, 3); - n = push_captures(ms, s, e); - lua_call(L, n, 1); - break; - } - case LUA_TTABLE: { - push_onecapture(ms, 0, s, e); - lua_gettable(L, 3); - break; - } - } - if (!lua_toboolean(L, -1)) { /* nil or false? */ - lua_pop(L, 1); - lua_pushlstring(L, s, (size_t)(e - s)); /* keep original text */ - } else if (!lua_isstring(L, -1)) { - lj_err_callerv(L, LJ_ERR_STRGSRV, luaL_typename(L, -1)); - } - luaL_addvalue(b); /* add result to accumulator */ -} - -LJLIB_CF(string_gsub) -{ - size_t srcl; - const char *src = luaL_checklstring(L, 1, &srcl); - const char *p = luaL_checkstring(L, 2); - int tr = lua_type(L, 3); - int max_s = luaL_optint(L, 4, (int)(srcl+1)); - int anchor = (*p == '^') ? (p++, 1) : 0; - int n = 0; - MatchState ms; - luaL_Buffer b; - if (!(tr == LUA_TNUMBER || tr == LUA_TSTRING || - tr == LUA_TFUNCTION || tr == LUA_TTABLE)) - lj_err_arg(L, 3, LJ_ERR_NOSFT); - luaL_buffinit(L, &b); - ms.L = L; - ms.src_init = src; - ms.src_end = src+srcl; - while (n < max_s) { - const char *e; - ms.level = 0; - e = match(&ms, src, p); - if (e) { - n++; - add_value(&ms, &b, src, e); - } - if (e && e>src) /* non empty match? */ - src = e; /* skip it */ - else if (src < ms.src_end) - luaL_addchar(&b, *src++); - else - break; - if (anchor) - break; - } - luaL_addlstring(&b, src, (size_t)(ms.src_end-src)); - luaL_pushresult(&b); - lua_pushinteger(L, n); /* number of substitutions */ - return 2; -} - -/* ------------------------------------------------------------------------ */ - -/* maximum size of each formatted item (> len(format('%99.99f', -1e308))) */ -#define MAX_FMTITEM 512 -/* valid flags in a format specification */ -#define FMT_FLAGS "-+ #0" -/* -** maximum size of each format specification (such as '%-099.99d') -** (+10 accounts for %99.99x plus margin of error) -*/ -#define MAX_FMTSPEC (sizeof(FMT_FLAGS) + sizeof(LUA_INTFRMLEN) + 10) - -static void addquoted(lua_State *L, luaL_Buffer *b, int arg) -{ - GCstr *str = lj_lib_checkstr(L, arg); - int32_t len = (int32_t)str->len; - const char *s = strdata(str); - luaL_addchar(b, '"'); - while (len--) { - if (*s == '"' || *s == '\\' || *s == '\n') { - luaL_addchar(b, '\\'); - luaL_addchar(b, *s); - } else if (lj_char_iscntrl(uchar(*s))) { - uint32_t c1, c2, c3; - luaL_addchar(b, '\\'); - c1 = uchar(*s); c3 = c1 % 10; c1 /= 10; c2 = c1 % 10; c1 /= 10; - if (c1 + lj_char_isdigit(uchar(s[1]))) luaL_addchar(b, '0' + c1); - if (c2 + (c1 + lj_char_isdigit(uchar(s[1])))) luaL_addchar(b, '0' + c2); - luaL_addchar(b, '0' + c3); - } else { - luaL_addchar(b, *s); - } - s++; - } - luaL_addchar(b, '"'); -} - -static const char *scanformat(lua_State *L, const char *strfrmt, char *form) -{ - const char *p = strfrmt; - while (*p != '\0' && strchr(FMT_FLAGS, *p) != NULL) p++; /* skip flags */ - if ((size_t)(p - strfrmt) >= sizeof(FMT_FLAGS)) - lj_err_caller(L, LJ_ERR_STRFMTR); - if (lj_char_isdigit(uchar(*p))) p++; /* skip width */ - if (lj_char_isdigit(uchar(*p))) p++; /* (2 digits at most) */ - if (*p == '.') { - p++; - if (lj_char_isdigit(uchar(*p))) p++; /* skip precision */ - if (lj_char_isdigit(uchar(*p))) p++; /* (2 digits at most) */ - } - if (lj_char_isdigit(uchar(*p))) - lj_err_caller(L, LJ_ERR_STRFMTW); - *(form++) = '%'; - strncpy(form, strfrmt, (size_t)(p - strfrmt + 1)); - form += p - strfrmt + 1; - *form = '\0'; - return p; -} - -static void addintlen(char *form) -{ - size_t l = strlen(form); - char spec = form[l - 1]; - strcpy(form + l - 1, LUA_INTFRMLEN); - form[l + sizeof(LUA_INTFRMLEN) - 2] = spec; - form[l + sizeof(LUA_INTFRMLEN) - 1] = '\0'; -} - -static unsigned LUA_INTFRM_T num2intfrm(lua_State *L, int arg) -{ - if (sizeof(LUA_INTFRM_T) == 4) { - return (LUA_INTFRM_T)lj_lib_checkbit(L, arg); - } else { - cTValue *o; - lj_lib_checknumber(L, arg); - o = L->base+arg-1; - if (tvisint(o)) - return (LUA_INTFRM_T)intV(o); - else - return (LUA_INTFRM_T)numV(o); - } -} - -static unsigned LUA_INTFRM_T num2uintfrm(lua_State *L, int arg) -{ - if (sizeof(LUA_INTFRM_T) == 4) { - return (unsigned LUA_INTFRM_T)lj_lib_checkbit(L, arg); - } else { - cTValue *o; - lj_lib_checknumber(L, arg); - o = L->base+arg-1; - if (tvisint(o)) - return (unsigned LUA_INTFRM_T)intV(o); - else if ((int32_t)o->u32.hi < 0) - return (unsigned LUA_INTFRM_T)(LUA_INTFRM_T)numV(o); - else - return (unsigned LUA_INTFRM_T)numV(o); - } -} - -LJLIB_CF(string_format) -{ - int arg = 1, top = (int)(L->top - L->base); - GCstr *fmt = lj_lib_checkstr(L, arg); - const char *strfrmt = strdata(fmt); - const char *strfrmt_end = strfrmt + fmt->len; - luaL_Buffer b; - luaL_buffinit(L, &b); - while (strfrmt < strfrmt_end) { - if (*strfrmt != L_ESC) { - luaL_addchar(&b, *strfrmt++); - } else if (*++strfrmt == L_ESC) { - luaL_addchar(&b, *strfrmt++); /* %% */ - } else { /* format item */ - char form[MAX_FMTSPEC]; /* to store the format (`%...') */ - char buff[MAX_FMTITEM]; /* to store the formatted item */ - if (++arg > top) - luaL_argerror(L, arg, lj_obj_typename[0]); - strfrmt = scanformat(L, strfrmt, form); - switch (*strfrmt++) { - case 'c': - sprintf(buff, form, lj_lib_checkint(L, arg)); - break; - case 'd': case 'i': - addintlen(form); - sprintf(buff, form, num2intfrm(L, arg)); - break; - case 'o': case 'u': case 'x': case 'X': - addintlen(form); - sprintf(buff, form, num2uintfrm(L, arg)); - break; - case 'e': case 'E': case 'f': case 'g': case 'G': { - TValue tv; - tv.n = lj_lib_checknum(L, arg); - if (LJ_UNLIKELY((tv.u32.hi << 1) >= 0xffe00000)) { - /* Canonicalize output of non-finite values. */ - char *p, nbuf[LJ_STR_NUMBUF]; - size_t len = lj_str_bufnum(nbuf, &tv); - if (strfrmt[-1] == 'E' || strfrmt[-1] == 'G') { - nbuf[len-3] = nbuf[len-3] - 0x20; - nbuf[len-2] = nbuf[len-2] - 0x20; - nbuf[len-1] = nbuf[len-1] - 0x20; - } - nbuf[len] = '\0'; - for (p = form; *p < 'e' && *p != '.'; p++) ; - *p++ = 's'; *p = '\0'; - sprintf(buff, form, nbuf); - break; - } - sprintf(buff, form, (double)tv.n); - break; - } - case 'q': - addquoted(L, &b, arg); - continue; - case 'p': - lj_str_pushf(L, "%p", lua_topointer(L, arg)); - luaL_addvalue(&b); - continue; - case 's': { - GCstr *str = lj_lib_checkstr(L, arg); - if (!strchr(form, '.') && str->len >= 100) { - /* no precision and string is too long to be formatted; - keep original string */ - setstrV(L, L->top++, str); - luaL_addvalue(&b); - continue; - } - sprintf(buff, form, strdata(str)); - break; - } - default: - lj_err_callerv(L, LJ_ERR_STRFMTO, *(strfrmt -1)); - break; - } - luaL_addlstring(&b, buff, strlen(buff)); - } - } - luaL_pushresult(&b); - return 1; -} - -/* ------------------------------------------------------------------------ */ - -#include "lj_libdef.h" - -LUALIB_API int luaopen_string(lua_State *L) -{ - GCtab *mt; - global_State *g; - LJ_LIB_REG(L, LUA_STRLIBNAME, string); -#if defined(LUA_COMPAT_GFIND) - lua_getfield(L, -1, "gmatch"); - lua_setfield(L, -2, "gfind"); -#endif - mt = lj_tab_new(L, 0, 1); - /* NOBARRIER: basemt is a GC root. */ - g = G(L); - setgcref(basemt_it(g, LJ_TSTR), obj2gco(mt)); - settabV(L, lj_tab_setstr(L, mt, mmname_str(g, MM_index)), tabV(L->top-1)); - mt->nomm = (uint8_t)(~(1u<