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/*
*
* Routines dealing with files within IRC II script language
*
* Written by Flier
*
* $Id: files.c,v 1.14 2001-05-09 17:20:41 f Exp $
*/
#include "irc.h"
#include "ircaux.h"
#include "mystructs.h"
#ifndef LITE
/*
open(FILENAME <type>)
<type> is R for read, W for write, A for append, R is default.
Returns fd of opened file, -1 on error
read (fd)
Returns line for given fd, as long as fd is
opened via the open() call, -1 on error
write (fd text)
Writes the text to the file pointed to by fd.
Returns the number of bytes written, -1 on error
close (fd)
closes file for given fd
Returns 0 on OK, -1 on error
eof (fd)
Returns 1 if fd is at EOF, 0 if not. -1 on error
*/
struct FILE___ {
FILE *file;
struct FILE___ *next;
};
typedef struct FILE___ File;
static File *FtopEntry=(File *) 0;
File *NewFile()
{
File *tmp=FtopEntry;
File *tmpfile=(File *) new_malloc(sizeof(File));
if (FtopEntry==(File *) 0) FtopEntry=tmpfile;
else {
while (tmp->next) tmp=tmp->next;
tmp->next=tmpfile;
}
tmpfile->file=NULL;
return(tmpfile);
}
void RemoveFile(file)
File *file;
{
File *tmp=FtopEntry;
if (file==FtopEntry) FtopEntry=file->next;
else {
while (tmp->next && tmp->next!=file) tmp=tmp->next;
if (tmp->next) tmp->next=tmp->next->next;
}
if (file->file) fclose(file->file);
new_free((char **)&file);
}
int OpenFileRead(filename)
char *filename;
{
char *expand=NULL;
FILE *file;
if (!(expand=expand_twiddle(filename))) malloc_strcpy(&expand,filename);
file=fopen(expand,"r");
new_free(&expand);
if (file) {
File *nfs=NewFile();
nfs->file=file;
nfs->next=(File *) 0;
return(fileno(file));
}
else return(-1);
}
int OpenFileWrite(filename,type)
char *filename;
char *type;
{
char *expand=NULL;
FILE *file;
if (!(expand=expand_twiddle(filename))) malloc_strcpy(&expand,filename);
*type=tolower(*type);
file=fopen(expand,type);
new_free(&expand);
if (file) {
File *nfs=NewFile();
nfs->file=file;
nfs->next=(File *) 0;
return(fileno(file));
}
else return(-1);
}
File *LookupFile(fd)
int fd;
{
File *ptr=FtopEntry;
while (ptr) {
if (fileno(ptr->file)==fd) return(ptr);
else ptr=ptr->next;
}
return((File *) 0);
}
int FileWrite(fd,stuff)
int fd;
char *stuff;
{
int result;
File *ptr=LookupFile(fd);
if (!ptr) return(-1);
else {
result=fprintf(ptr->file,"%s\n",stuff);
fflush(ptr->file);
return(result);
}
}
char *FileRead(fd)
int fd;
{
File *ptr=LookupFile(fd);
char *tmpstr=(char *) 0;
char *result;
char tmpbuf[mybufsize];
if (!ptr) strcpy(tmpbuf,"-1");
else {
*tmpbuf='\0';
result=fgets(tmpbuf,sizeof(tmpbuf),ptr->file);
if (!result) strcpy(tmpbuf,"-1");
else if (strlen(tmpbuf) && tmpbuf[strlen(tmpbuf)-1]=='\n')
tmpbuf[strlen(tmpbuf)-1]='\0';
}
malloc_strcpy(&tmpstr,tmpbuf);
return(tmpstr);
}
int FileEof(fd)
int fd;
{
File *ptr=LookupFile(fd);
if (!ptr) return(-1);
else return(feof(ptr->file));
}
int FileClose(fd)
int fd;
{
File *ptr=LookupFile (fd);
if (!ptr) return(-1);
else RemoveFile(ptr);
return(0);
}
#endif /* LITE */
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