123

CryScriptSystem/LUA/lobject.c

@@ -0,0 +1,105 @@
+/*
+** $Id: lobject.c,v 1.70 2001/03/26 14:31:49 roberto Exp $
+** Some generic functions over Lua objects
+** See Copyright Notice in lua.h
+*/
+
+#include <ctype.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define LUA_PRIVATE
+#include "lua.h"
+
+#include "ldo.h"
+#include "lmem.h"
+#include "lobject.h"
+#include "lstate.h"
+
+
+
+const TObject luaO_nilobject = {LUA_TNIL, {NULL}};
+
+
+int luaO_equalObj (const TObject *t1, const TObject *t2) {
+  if (ttype(t1) != ttype(t2)) return 0;
+  switch (ttype(t1)) {
+    case LUA_TNUMBER:
+      return nvalue(t1) == nvalue(t2);
+    case LUA_TNIL:
+      return 1;
+    default:  /* all other types are equal if pointers are equal */
+      return tsvalue(t1) == tsvalue(t2);
+  }
+}
+
+
+void *luaO_openspaceaux (lua_State *L, size_t n) {
+  if (n > G(L)->Mbuffsize) {
+    G(L)->Mbuffer = luaM_realloc(L, G(L)->Mbuffer, G(L)->Mbuffsize, n);
+    G(L)->Mbuffsize = n;
+  }
+  return G(L)->Mbuffer;
+}
+
+
+int luaO_str2d (const l_char *s, lua_Number *result) {
+  l_char *endptr;
+  lua_Number res = lua_str2number(s, &endptr);
+  if (endptr == s) return 0;  /* no conversion */
+  while (isspace(uchar(*endptr))) endptr++;
+  if (*endptr != l_c('\0')) return 0;  /* invalid trailing characters? */
+  *result = res;
+  return 1;
+}
+
+
+/* maximum length of a string format for `luaO_verror' */
+#define MAX_VERROR	280
+
+/* this function needs to handle only '%d' and '%.XXs' formats */
+void luaO_verror (lua_State *L, const l_char *fmt, ...) {
+  va_list argp;
+  l_char buff[MAX_VERROR];  /* to hold formatted message */
+  va_start(argp, fmt);
+  vsprintf(buff, fmt, argp);
+  va_end(argp);
+  luaD_error(L, buff);
+}
+
+
+void luaO_chunkid (l_char *out, const l_char *source, int bufflen) {
+  if (*source == l_c('=')) {
+    strncpy(out, source+1, bufflen);  /* remove first char */
+    out[bufflen-1] = l_c('\0');  /* ensures null termination */
+  }
+  else {
+    if (*source == l_c('@')) {
+      int l;
+      source++;  /* skip the `@' */
+      bufflen -= sizeof(l_s("file `...%s'"));
+      l = strlen(source);
+      if (l>bufflen) {
+        source += (l-bufflen);  /* get last part of file name */
+        sprintf(out, l_s("file `...%.99s'"), source);
+      }
+      else
+        sprintf(out, l_s("file `%.99s'"), source);
+    }
+    else {
+      int len = strcspn(source, l_s("\n"));  /* stop at first newline */
+      bufflen -= sizeof(l_s("string \"%.*s...\""));
+      if (len > bufflen) len = bufflen;
+      if (source[len] != l_c('\0')) {  /* must truncate? */
+        strcpy(out, l_s("string \""));
+        out += strlen(out);
+        strncpy(out, source, len);
+        strcpy(out+len, l_s("...\""));
+      }
+      else
+        sprintf(out, l_s("string \"%.99s\""), source);
+    }
+  }
+}