nik/lush
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

zio should not care about how a user creates a FILE (pipe, socket, popen,

Browse Source 
etc).
This commit is contained in:
Roberto Ierusalimschy
1997-06-20 16:25:54 -03:00
parent 6402bfb1f8
commit f97307b548
2 changed files with 2 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
zio.c
View File

@@ -1,7 +1,7 @@
/*
* zio.c
* a generic input stream interface
* $Id: zio.c,v 1.5 1997/06/13 13:49:16 lhf Exp $
* $Id: zio.c,v 1.1 1997/06/16 16:50:22 roberto Exp roberto $
*/
#include <stdio.h>
@@ -9,13 +9,6 @@
#include <string.h>
#include "zio.h"
#ifdef POPEN
FILE *popen();
int pclose();
#else
#define popen(x,y) NULL /* that is, popen always fails */
#define pclose(x) (-1)
#endif
/* ----------------------------------------------------- memory buffers --- */
@@ -24,18 +17,12 @@ static int zmfilbuf(ZIO* z)
return EOZ;
}
static int zmclose(ZIO* z)
{
return 1;
}
ZIO* zmopen(ZIO* z, char* b, int size)
{
if (b==NULL) return NULL;
z->n=size;
z->p= (unsigned char *)b;
z->filbuf=zmfilbuf;
z->close=zmclose;
z->u=NULL;
return z;
}
@@ -59,11 +46,6 @@ static int zffilbuf(ZIO* z)
return *(z->p++);
}
static int zfclose(ZIO* z)
{
if (z->u==stdin) return 0;
return fclose(z->u);
}
ZIO* zFopen(ZIO* z, FILE* f)
{
@@ -71,30 +53,10 @@ ZIO* zFopen(ZIO* z, FILE* f)
z->n=0;
z->p=z->buffer;
z->filbuf=zffilbuf;
z->close=zfclose;
z->u=f;
return z;
}
ZIO* zfopen(ZIO* z, char* s, char* m)
{
return zFopen(z,fopen(s,m));
}
/* -------------------------------------------------------------- pipes --- */
static int zpclose(ZIO* z)
{
return pclose(z->u);
}
ZIO* zpopen(ZIO* z, char* s, char* m)
{
z=zFopen(z,popen(s,m));
if (z==NULL) return NULL;
z->close=zpclose;
return z;
}
/* --------------------------------------------------------------- read --- */
int zread(ZIO *z, void *b, int n)