2 ** $Id: lzio.c,v 1.31.1.1 2007/12/27 13:02:25 roberto Exp $
3 ** a generic input stream interface
4 ** See Copyright Notice in lua.h
13 #include "pdep/pdep.h"
15 int pdep_fill (ZIO *z) {
20 buff = z->reader(L, z->data, &size);
22 if (buff == NULL || size == 0) return EOZ;
25 return char2int(*(z->p++));
29 int pdep_lookahead (ZIO *z) {
31 if (pdep_fill(z) == EOZ)
34 z->n++; /* pdep_fill removed first byte; put back it */
38 return char2int(*z->p);
42 void pdep_init (lua_State *L, ZIO *z, lua_Reader reader, void *data) {
51 /* --------------------------------------------------------------- read --- */
52 size_t pdep_read (ZIO *z, void *b, size_t n) {
55 if (pdep_lookahead(z) == EOZ)
56 return n; /* return number of missing bytes */
57 m = (n <= z->n) ? n : z->n; /* min. between n and z->n */
67 /* ------------------------------------------------------------------------ */
68 char *pdep_openspace (lua_State *L, Mbuffer *buff, size_t n) {
69 if (n > buff->buffsize) {
70 if (n < LUA_MINBUFFER) n = LUA_MINBUFFER;
71 pdep_resizebuffer(L, buff, n);