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String library to LUA

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This commit is contained in:
Waldemar Celes 1993-12-17 16:41:19 -02:00
parent 26c3684c4f
commit 212fdf861a
2 changed files with 27 additions and 12 deletions
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26
strlib.c
View File

@ -1,12 +1,10 @@
/*
** strlib.c
** String library to LUA
**
** Waldemar Celes Filho
** TeCGraf - PUC-Rio
** 19 May 93
*/
char *rcs_strlib="$Id: $";
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
@ -21,16 +19,18 @@
*/
static void str_find (void)
{
int n;
char *s1, *s2;
char *s1, *s2, *f;
lua_Object o1 = lua_getparam (1);
lua_Object o2 = lua_getparam (2);
if (!lua_isstring(o1) || !lua_isstring(o2))
{ lua_error ("incorrect arguments to function `strfind'"); return; }
s1 = lua_getstring(o1);
s2 = lua_getstring(o2);
n = strstr(s1,s2) - s1 + 1;
lua_pushnumber (n);
f = strstr(s1,s2);
if (f != NULL)
lua_pushnumber (f-s1+1);
else
lua_pushnil();
}
/*
@ -59,13 +59,15 @@ static void str_sub (void)
lua_Object o1 = lua_getparam (1);
lua_Object o2 = lua_getparam (2);
lua_Object o3 = lua_getparam (3);
if (!lua_isstring(o1) || !lua_isnumber(o2) || !lua_isnumber(o3))
if (!lua_isstring(o1) || !lua_isnumber(o2))
{ lua_error ("incorrect arguments to function `strsub'"); return; }
s = strdup (lua_getstring(o1));
if (o3 != NULL && !lua_isnumber(o3))
{ lua_error ("incorrect third argument to function `strsub'"); return; }
s = lua_copystring(o1);
start = lua_getnumber (o2);
end = lua_getnumber (o3);
end = o3 == NULL ? strlen(s) : lua_getnumber (o3);
if (end < start || start < 1 || end > strlen(s))
lua_pushstring ("");
lua_pushstring("");
else
{
s[end] = 0;

13
strlib.h Normal file
View File

@ -0,0 +1,13 @@
/*
** String library to LUA
** TeCGraf - PUC-Rio
** $Id: $
*/
#ifndef strlib_h
void strlib_open (void);
#endif