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fs.c
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fs.c
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/* BASIC file system interface. */
/* #includes */ /*{{{C}}}*//*{{{*/
#include "config.h"
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#ifdef HAVE_GETTEXT
#include <libintl.h>
#define _(String) gettext(String)
#else
#define _(String) String
#endif
#include <math.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <time.h>
#ifdef HAVE_TERMCAP_H
#include <termcap.h>
#endif
#ifdef HAVE_CURSES_H
#include <curses.h>
#endif
#include <unistd.h>
#include "fs.h"
#ifdef USE_DMALLOC
#include "dmalloc.h"
#endif
/*}}}*/
/* #defines */ /*{{{*/
#define LINEWIDTH 80
#define COLWIDTH 14
/*}}}*/
static struct FileStream **file;
static int capacity;
static int used;
static struct termios origMode,rawMode;
static const int open_mode[4]={ 0, O_RDONLY, O_WRONLY, O_RDWR };
static struct sigaction old_sigint, old_sigquit;
static int termchannel;
const char *FS_errmsg;
static char FS_errmsgbuf[80];
volatile int FS_intr;
static int size(int dev) /*{{{*/
{
if (dev>=capacity)
{
int i;
struct FileStream **n;
if ((n=(struct FileStream**)realloc(file,(dev+1)*sizeof(struct FileStream*)))==(struct FileStream**)0)
{
FS_errmsg=strerror(errno);
return -1;
}
file=n;
for (i=capacity; i<=dev; ++i) file[i]=(struct FileStream*)0;
capacity=dev+1;
}
return 0;
}
/*}}}*/
static int opened(int dev, int mode) /*{{{*/
{
int fd=-1;
if (dev<0 || dev>=capacity || file[dev]==(struct FileStream*)0)
{
snprintf(FS_errmsgbuf,sizeof(FS_errmsgbuf),_("channel #%d not open"),dev);
FS_errmsg=FS_errmsgbuf;
return -1;
}
if (mode==-1) return 0;
switch (mode)
{
case 0:
{
fd=file[dev]->outfd;
if (fd==-1) snprintf(FS_errmsgbuf,sizeof(FS_errmsgbuf),_("channel #%d not opened for writing"),dev);
break;
}
case 1:
{
fd=file[dev]->infd;
if (fd==-1) snprintf(FS_errmsgbuf,sizeof(FS_errmsgbuf),_("channel #%d not opened for reading"),dev);
break;
}
case 2:
{
fd=file[dev]->randomfd;
if (fd==-1) snprintf(FS_errmsgbuf,sizeof(FS_errmsgbuf),_("channel #%d not opened for random access"),dev);
break;
}
case 3:
{
fd=file[dev]->binaryfd;
if (fd==-1) snprintf(FS_errmsgbuf,sizeof(FS_errmsgbuf),_("channel #%d not opened for binary access"),dev);
break;
}
case 4:
{
fd=(file[dev]->randomfd!=-1?file[dev]->randomfd:file[dev]->binaryfd);
if (fd==-1) snprintf(FS_errmsgbuf,sizeof(FS_errmsgbuf),_("channel #%d not opened for random or binary access"),dev);
break;
}
default: assert(0);
}
if (fd==-1)
{
FS_errmsg=FS_errmsgbuf;
return -1;
}
else return 0;
}
/*}}}*/
static int refill(int dev) /*{{{*/
{
struct FileStream *f;
ssize_t len;
f=file[dev];
f->inSize=0;
len=read(f->infd,f->inBuf,sizeof(f->inBuf));
if (len<=0)
{
f->inCapacity=0;
FS_errmsg=(len==-1?strerror(errno):(const char*)0);
return -1;
}
else
{
f->inCapacity=len;
return 0;
}
}
/*}}}*/
static int edit(int chn, int onl) /*{{{*/
{
struct FileStream *f=file[chn];
char *buf=f->inBuf;
char ch;
int r;
for (buf=f->inBuf; buf<(f->inBuf+f->inCapacity); ++buf)
{
if (*buf>='\0' && *buf<' ')
{
FS_putChar(chn,'^');
FS_putChar(chn,*buf?(*buf+'a'-1):'@');
}
else FS_putChar(chn,*buf);
}
do
{
FS_flush(chn);
if ((r=read(f->infd,&ch,1))==-1)
{
f->inCapacity=0;
FS_errmsg=strerror(errno);
return -1;
}
else if (r==0 || (f->inCapacity==0 && ch==4))
{
FS_errmsg=(char*)0;
return -1;
}
if (ch==rawMode.c_cc[VERASE])
{
if (f->inCapacity)
{
if (f->inBuf[f->inCapacity-1]>='\0' && f->inBuf[f->inCapacity-1]<' ') FS_putChars(chn,"\b\b \b\b");
else FS_putChars(chn,"\b \b");
--f->inCapacity;
}
}
else if ((f->inCapacity+1)<sizeof(f->inBuf))
{
if (ch!='\n')
{
if (ch>='\0' && ch<' ')
{
FS_putChar(chn,'^');
FS_putChar(chn,ch?(ch+'a'-1):'@');
}
else FS_putChar(chn,ch);
}
else if (onl) FS_putChar(chn,'\n');
f->inBuf[f->inCapacity++]=ch;
}
} while (ch!='\n');
return 0;
}
/*}}}*/
static int outc(int ch) /*{{{*/
{
struct FileStream *f;
if (opened(termchannel,0)==-1) return -1;
f=file[termchannel];
if (f->outSize+1>=f->outCapacity && FS_flush(termchannel)==-1) return -1;
f->outBuf[f->outSize++]=ch;
FS_errmsg=(const char*)0;
return ch;
}
/*}}}*/
#ifdef HAVE_TGETENT
static char *term,entrybuf[2048],*cap;
static char *cl,*cm,*ce,*cr,*md,*me,*AF,*AB;
static int Co,NC;
static int mytputs(const char *str, int affcnt, int (*out)(int)) /*{{{*/
{
#ifdef TPUTS_RETURNS_VOID
tputs(str,affcnt,out);
return 0;
#else
return tputs(str,affcnt,out);
#endif
}
/*}}}*/
static int initTerminal(int chn) /*{{{*/
{
static int init=0;
if (!init)
{
termchannel=chn;
if ((term=getenv("TERM"))==(char*)0)
{
FS_errmsg=_("environment variable TERM is not set");
return -1;
}
switch (tgetent(entrybuf,term))
{
case -1:
{
FS_errmsg=_("reading terminal description failed");
return -1;
}
case 0:
{
sprintf(FS_errmsgbuf,_("unknown terminal type %s"),term);
FS_errmsg=FS_errmsgbuf;
return -1;
}
case 1:
{
cl=tgetstr("cl",&cap); /* clear screen and home cursor */
cm=tgetstr("cm",&cap); /* move to row #1 col #2 */
ce=tgetstr("ce",&cap); /* clear to end of line */
cr=tgetstr("cr",&cap); /* carriage return */
md=tgetstr("md",&cap); /* turn on bold (extra bright) mode */
me=tgetstr("me",&cap); /* turn off all attributes */
AF=tgetstr("AF",&cap); /* set foreground to color N */
AB=tgetstr("AB",&cap); /* set background to color N */
Co=tgetnum("Co"); /* maximum colors on screen */
if ((NC=tgetnum("NC"))==-1) NC=0; /* attributes not with color */
return 0;
}
}
init=1;
}
return 0;
}
/*}}}*/
static int cls(int chn) /*{{{*/
{
if (cl==(char*)0)
{
sprintf(FS_errmsgbuf,_("terminal type %s can not clear the screen"),term);
FS_errmsg=FS_errmsgbuf;
return -1;
}
if (mytputs(cl,0,outc)==-1) return -1;
return 0;
}
/*}}}*/
static int locate(int chn, int line, int column) /*{{{*/
{
termchannel=chn;
if (cm==(char*)0)
{
sprintf(FS_errmsgbuf,_("terminal type %s can not position the cursor"),term);
FS_errmsg=FS_errmsgbuf;
return -1;
}
if (mytputs(tgoto(cm,column-1,line-1),0,outc)==-1) return -1;
return 0;
}
/*}}}*/
static int colour(int chn, int foreground, int background) /*{{{*/
{
if (AF && AB && Co>=8)
{
static int map[8]={ 0,4,2,6,1,5,3,7 }; /* remap color numbers so setab/setaf (AB/AF) emulates setb/setf (MSX) values */
if (foreground!=-1)
{
if (md && me && !(NC&32))
{
if (foreground>7 && file[chn]->outforeground<=7)
{
if (mytputs(md,0,outc)==-1) return -1;
/* all attributes are gone now, need to set background again */
if (background==-1) background=file[chn]->outbackground;
}
else if (foreground<=7 && file[chn]->outforeground>7)
{
if (mytputs(me,0,outc)==-1) return -1;
}
}
if (mytputs(tgoto(AF,0,map[foreground&7]),0,outc)==-1) return -1;
}
if (background!=-1)
{
if (mytputs(tgoto(AB,0,map[background&7]),0,outc)==-1) return -1;
}
}
return 0;
}
/*}}}*/
/* TODO: --color256 : color 255,255,255 */
static int colour256(int chn, int foreground, int background) /*{{{*/
{
if (AF && AB && Co>=8)
{
static int map[8]={ 0,4,2,6,1,5,3,7 };
if (foreground!=-1)
{
if (foreground>7 && foreground<=15)
{
foreground=(map[foreground&7])+8;
}
else if (foreground<=7)
{
foreground=(map[foreground&7]);
}
if (mytputs(tgoto(AF,0,foreground),0,outc)==-1) return -1;
}
if (background!=-1)
{
if (background>7 && background<=15)
{
background=(map[background&7])+8;
}
else if (background<=7)
{
background=(map[background&7]);
}
if (mytputs(tgoto(AB,0,background),0,outc)==-1) return -1;
}
}
return 0;
}
/*}}}*/
static int resetcolour(int chn) /*{{{*/
{
if (me) mytputs(me,0,outc);
if (ce) mytputs(ce,0,outc);
return 0;
}
/*}}}*/
static void carriage_return(int chn) /*{{{*/
{
if (cr) mytputs(cr,0,outc);
else outc('\r');
outc('\n');
}
/*}}}*/
#else
static int initTerminal(int chn) /*{{{*/
{
termchannel=chn;
return 0;
}
/*}}}*/
static int cls(int chn) /*{{{*/
{
FS_errmsg=_("This installation does not support terminal handling");
return -1;
}
/*}}}*/
static int locate(int chn, int line, int column) /*{{{*/
{
FS_errmsg=_("This installation does not support terminal handling");
return -1;
}
/*}}}*/
static int colour(int chn, int foreground, int background) /*{{{*/
{
FS_errmsg=_("This installation does not support terminal handling");
return -1;
}
/*}}}*/
static int colour256(int chn, int foreground, int background) /*{{{*/
{
FS_errmsg=_("This installation does not support terminal handling");
return -1;
}
/*}}}*/
static int resetcolour(int chn) /*{{{*/
{
return 0;
}
/*}}}*/
static void carriage_return(int chn) /*{{{*/
{
outc('\r');
outc('\n');
}
/*}}}*/
#endif
static void sigintr(int sig) /*{{{*/
{
FS_intr=1;
FS_allowIntr(0);
}
/*}}}*/
int FS_opendev(int chn, int infd, int outfd) /*{{{*/
{
if (size(chn)==-1) return -1;
if (file[chn]!=(struct FileStream*)0)
{
FS_errmsg=_("channel already open");
return -1;
}
file[chn]=malloc(sizeof(struct FileStream));
file[chn]->dev=1;
if ((file[chn]->tty=(infd==0 ? isatty(infd) && isatty(outfd) : 0)))
{
if (tcgetattr(infd,&origMode)==-1)
{
FS_errmsg=strerror(errno);
free(file[chn]);
file[chn]=(struct FileStream*)0;
return -1;
}
rawMode=origMode;
rawMode.c_lflag&=~(ICANON|ECHO); /* IEXTEN would disable IUCLC, breaking UC only terminals */
rawMode.c_cc[VMIN]=1;
rawMode.c_cc[VTIME]=0;
rawMode.c_oflag&=~ONLCR;
if (tcsetattr(infd,TCSADRAIN,&rawMode)==-1)
{
FS_errmsg=strerror(errno);
free(file[chn]);
file[chn]=(struct FileStream*)0;
return -1;
}
initTerminal(chn);
}
file[chn]->recLength=1;
file[chn]->infd=infd;
file[chn]->inSize=0;
file[chn]->inCapacity=0;
file[chn]->outfd=outfd;
file[chn]->outPos=0;
file[chn]->outLineWidth=LINEWIDTH;
file[chn]->outColWidth=COLWIDTH;
file[chn]->outCapacity=sizeof(file[chn]->outBuf);
file[chn]->outSize=0;
file[chn]->outforeground=-1;
file[chn]->outbackground=-1;
file[chn]->randomfd=-1;
file[chn]->binaryfd=-1;
FS_errmsg=(const char*)0;
++used;
return 0;
}
/*}}}*/
int FS_openin(const char *name) /*{{{*/
{
int chn,fd;
if ((fd=open(name,O_RDONLY))==-1)
{
FS_errmsg=strerror(errno);
return -1;
}
for (chn=0; chn<capacity; ++chn) if (file[chn]==(struct FileStream*)0) break;
if (size(chn)==-1) return -1;
file[chn]=malloc(sizeof(struct FileStream));
file[chn]->recLength=1;
file[chn]->dev=0;
file[chn]->tty=0;
file[chn]->infd=fd;
file[chn]->inSize=0;
file[chn]->inCapacity=0;
file[chn]->outfd=-1;
file[chn]->randomfd=-1;
file[chn]->binaryfd=-1;
FS_errmsg=(const char*)0;
++used;
return chn;
}
/*}}}*/
int FS_openinChn(int chn, const char *name, int mode) /*{{{*/
{
int fd;
mode_t fl;
if (size(chn)==-1) return -1;
if (file[chn]!=(struct FileStream*)0)
{
FS_errmsg=_("channel already open");
return -1;
}
fl=open_mode[mode];
/* Serial devices on Linux should be opened non-blocking, otherwise the */
/* open() may block already. Named pipes can not be opened non-blocking */
/* in write-only mode, so first try non-blocking, then blocking. */
if ((fd=open(name,fl|O_NONBLOCK))==-1)
{
if (errno!=ENXIO || (fd=open(name,fl))==-1)
{
FS_errmsg=strerror(errno);
return -1;
}
}
else if (fcntl(fd,F_SETFL,(long)fl)==-1)
{
FS_errmsg=strerror(errno);
close(fd);
return -1;
}
file[chn]=malloc(sizeof(struct FileStream));
file[chn]->recLength=1;
file[chn]->dev=0;
file[chn]->tty=0;
file[chn]->infd=fd;
file[chn]->inSize=0;
file[chn]->inCapacity=0;
file[chn]->outfd=-1;
file[chn]->randomfd=-1;
file[chn]->binaryfd=-1;
FS_errmsg=(const char*)0;
++used;
return chn;
}
/*}}}*/
int FS_openout(const char *name) /*{{{*/
{
int chn,fd;
if ((fd=open(name,O_WRONLY|O_TRUNC|O_CREAT,0666))==-1)
{
FS_errmsg=strerror(errno);
return -1;
}
for (chn=0; chn<capacity; ++chn) if (file[chn]==(struct FileStream*)0) break;
if (size(chn)==-1) return -1;
file[chn]=malloc(sizeof(struct FileStream));
file[chn]->recLength=1;
file[chn]->dev=0;
file[chn]->tty=0;
file[chn]->infd=-1;
file[chn]->outfd=fd;
file[chn]->outPos=0;
file[chn]->outLineWidth=LINEWIDTH;
file[chn]->outColWidth=COLWIDTH;
file[chn]->outSize=0;
file[chn]->outCapacity=sizeof(file[chn]->outBuf);
file[chn]->randomfd=-1;
file[chn]->binaryfd=-1;
FS_errmsg=(const char*)0;
++used;
return chn;
}
/*}}}*/
int FS_openoutChn(int chn, const char *name, int mode, int append) /*{{{*/
{
int fd;
mode_t fl;
if (size(chn)==-1) return -1;
if (file[chn]!=(struct FileStream*)0)
{
FS_errmsg=_("channel already open");
return -1;
}
fl=open_mode[mode]|(append?O_APPEND:0);
/* Serial devices on Linux should be opened non-blocking, otherwise the */
/* open() may block already. Named pipes can not be opened non-blocking */
/* in write-only mode, so first try non-blocking, then blocking. */
if ((fd=open(name,fl|O_CREAT|(append?0:O_TRUNC)|O_NONBLOCK,0666))==-1)
{
if (errno!=ENXIO || (fd=open(name,fl|O_CREAT|(append?0:O_TRUNC),0666))==-1)
{
FS_errmsg=strerror(errno);
return -1;
}
}
else if (fcntl(fd,F_SETFL,(long)fl)==-1)
{
FS_errmsg=strerror(errno);
close(fd);
return -1;
}
file[chn]=malloc(sizeof(struct FileStream));
file[chn]->recLength=1;
file[chn]->dev=0;
file[chn]->tty=0;
file[chn]->infd=-1;
file[chn]->outfd=fd;
file[chn]->outPos=0;
file[chn]->outLineWidth=LINEWIDTH;
file[chn]->outColWidth=COLWIDTH;
file[chn]->outSize=0;
file[chn]->outCapacity=sizeof(file[chn]->outBuf);
file[chn]->randomfd=-1;
file[chn]->binaryfd=-1;
FS_errmsg=(const char*)0;
++used;
return chn;
}
/*}}}*/
int FS_openrandomChn(int chn, const char *name, int mode, int recLength) /*{{{*/
{
int fd;
assert(chn>=0);
assert(name!=(const char*)0);
assert(recLength>0);
if (size(chn)==-1) return -1;
if (file[chn]!=(struct FileStream*)0)
{
FS_errmsg=_("channel already open");
return -1;
}
if ((fd=open(name,open_mode[mode]|O_CREAT,0666))==-1)
{
FS_errmsg=strerror(errno);
return -1;
}
file[chn]=malloc(sizeof(struct FileStream));
file[chn]->recLength=recLength;
file[chn]->dev=0;
file[chn]->tty=0;
file[chn]->infd=-1;
file[chn]->outfd=-1;
file[chn]->randomfd=fd;
file[chn]->recBuf=malloc(recLength);
memset(file[chn]->recBuf,0,recLength);
StringField_new(&file[chn]->field);
file[chn]->binaryfd=-1;
FS_errmsg=(const char*)0;
++used;
return chn;
}
/*}}}*/
int FS_openbinaryChn(int chn, const char *name, int mode) /*{{{*/
{
int fd;
assert(chn>=0);
assert(name!=(const char*)0);
if (size(chn)==-1) return -1;
if (file[chn]!=(struct FileStream*)0)
{
FS_errmsg=_("channel already open");
return -1;
}
if ((fd=open(name,open_mode[mode]|O_CREAT,0666))==-1)
{
FS_errmsg=strerror(errno);
return -1;
}
file[chn]=malloc(sizeof(struct FileStream));
file[chn]->recLength=1;
file[chn]->dev=0;
file[chn]->tty=0;
file[chn]->infd=-1;
file[chn]->outfd=-1;
file[chn]->randomfd=-1;
file[chn]->binaryfd=fd;
FS_errmsg=(const char*)0;
++used;
return chn;
}
/*}}}*/
int FS_freechn(void) /*{{{*/
{
int i;
for (i=0; i<capacity && file[i]; ++i);
if (size(i)==-1) return -1;
return i;
}
/*}}}*/
int FS_flush(int dev) /*{{{*/
{
ssize_t written;
size_t offset;
if (file[dev]==(struct FileStream*)0)
{
FS_errmsg=_("channel not open");
return -1;
}
offset=0;
while (offset<file[dev]->outSize)
{
written=write(file[dev]->outfd,file[dev]->outBuf+offset,file[dev]->outSize-offset);
if (written==-1)
{
FS_errmsg=strerror(errno);
return -1;
}
else offset+=written;
}
file[dev]->outSize=0;
FS_errmsg=(const char*)0;
return 0;
}
/*}}}*/
int FS_close(int dev) /*{{{*/
{
if (file[dev]==(struct FileStream*)0)
{
FS_errmsg=_("channel not open");
return -1;
}
if (file[dev]->outfd>=0)
{
if (file[dev]->tty && (file[dev]->outforeground!=-1 || file[dev]->outbackground!=-1)) resetcolour(dev);
FS_flush(dev);
close(file[dev]->outfd);
}
if (file[dev]->randomfd>=0)
{
StringField_destroy(&file[dev]->field);
free(file[dev]->recBuf);
close(file[dev]->randomfd);
}
if (file[dev]->binaryfd>=0)
{
close(file[dev]->binaryfd);
}
if (file[dev]->tty) tcsetattr(file[dev]->infd,TCSADRAIN,&origMode);
if (file[dev]->infd>=0) close(file[dev]->infd);
free(file[dev]);
file[dev]=(struct FileStream*)0;
FS_errmsg=(const char*)0;
if (--used==0)
{
free(file);
capacity=0;
}
return 0;
}
/*}}}*/
int FS_istty(int chn) /*{{{*/
{
return (file[chn] && file[chn]->tty);
}
/*}}}*/
int FS_lock(int chn, off_t offset, off_t length, int mode, int w) /*{{{*/
{
int fd;
struct flock recordLock;
if (file[chn]==(struct FileStream*)0)
{
FS_errmsg=_("channel not open");
return -1;
}
if ((fd=file[chn]->infd)==-1)
if ((fd=file[chn]->outfd)==-1)
if ((fd=file[chn]->randomfd)==-1)
if ((fd=file[chn]->binaryfd)==-1) assert(0);
recordLock.l_whence=SEEK_SET;
recordLock.l_start=offset;
recordLock.l_len=length;
switch (mode)
{
case FS_LOCK_SHARED: recordLock.l_type=F_RDLCK; break;
case FS_LOCK_EXCLUSIVE: recordLock.l_type=F_WRLCK; break;
case FS_LOCK_NONE: recordLock.l_type=F_UNLCK; break;
default: assert(0);
}
if (fcntl(fd,w ? F_SETLKW : F_SETLK,&recordLock)==-1)
{
FS_errmsg=strerror(errno);
return -1;
}
return 0;
}
/*}}}*/
int FS_truncate(int chn) /*{{{*/
{
int fd;
off_t o;
if (file[chn]==(struct FileStream*)0)
{
FS_errmsg=_("channel not open");
return -1;
}
if ((fd=file[chn]->infd)==-1)
if ((fd=file[chn]->outfd)==-1)
if ((fd=file[chn]->randomfd)==-1)
if ((fd=file[chn]->binaryfd)==-1) assert(0);
if ((o=lseek(fd,SEEK_CUR,0))==(off_t)-1 || ftruncate(fd,o+1)==-1)
{
FS_errmsg=strerror(errno);
return -1;
}
return 0;
}
/*}}}*/
void FS_shellmode(int dev) /*{{{*/
{
struct sigaction interrupt;
if (file[dev]->tty) tcsetattr(file[dev]->infd,TCSADRAIN,&origMode);
interrupt.sa_flags=0;
sigemptyset(&interrupt.sa_mask);
interrupt.sa_handler=SIG_IGN;
sigaction(SIGINT,&interrupt,&old_sigint);
sigaction(SIGQUIT,&interrupt,&old_sigquit);
}
/*}}}*/
void FS_fsmode(int chn) /*{{{*/
{
if (file[chn]->tty) tcsetattr(file[chn]->infd,TCSADRAIN,&rawMode);
sigaction(SIGINT,&old_sigint,(struct sigaction *)0);
sigaction(SIGQUIT,&old_sigquit,(struct sigaction *)0);
}
/*}}}*/
void FS_xonxoff(int chn, int on) /*{{{*/
{
if (file[chn]->tty)
{
if (on) rawMode.c_iflag|=(IXON|IXOFF);
else rawMode.c_iflag&=~(IXON|IXOFF);
tcsetattr(file[chn]->infd,TCSADRAIN,&rawMode);
}
}
/*}}}*/
int FS_put(int chn) /*{{{*/
{
ssize_t offset,written;
if (opened(chn,2)==-1) return -1;
offset=0;
while (offset<file[chn]->recLength)
{
written=write(file[chn]->randomfd,file[chn]->recBuf+offset,file[chn]->recLength-offset);
if (written==-1)
{
FS_errmsg=strerror(errno);
return -1;
}
else offset+=written;
}
FS_errmsg=(const char*)0;
return 0;
}
/*}}}*/
int FS_putChar(int dev, char ch) /*{{{*/
{
struct FileStream *f;
if (opened(dev,0)==-1) return -1;
f=file[dev];
if (ch=='\n') f->outPos=0;
if (ch=='\b' && f->outPos) --f->outPos;
if (f->outSize+2>=f->outCapacity && FS_flush(dev)==-1) return -1;
if (f->outLineWidth && f->outPos==f->outLineWidth)
{
if (FS_istty(dev)) carriage_return(dev);
else f->outBuf[f->outSize++]='\n';
f->outPos=0;
}
if (FS_istty(dev) && ch=='\n') carriage_return(dev);
else f->outBuf[f->outSize++]=ch;
if (ch!='\n' && ch!='\b') ++f->outPos;
FS_errmsg=(const char*)0;
return 0;
}
/*}}}*/
int FS_putChars(int dev, const char *chars) /*{{{*/
{
while (*chars) if (FS_putChar(dev,*chars++)==-1) return -1;
return 0;
}
/*}}}*/
int FS_putString(int dev, const struct String *s) /*{{{*/
{
size_t len=s->length;
const char *c=s->character;
while (len) if (FS_putChar(dev,*c++)==-1) return -1; else --len;
return 0;
}
/*}}}*/
int FS_putItem(int dev, const struct String *s) /*{{{*/
{
struct FileStream *f;
if (opened(dev,0)==-1) return -1;
f=file[dev];
if (f->outPos && f->outPos+s->length>f->outLineWidth) FS_nextline(dev);
return FS_putString(dev, s);
}
/*}}}*/
int FS_putbinaryString(int chn, const struct String *s) /*{{{*/
{
if (opened(chn,3)==-1) return -1;
if (s->length && write(file[chn]->binaryfd,s->character,s->length)!=s->length)
{
FS_errmsg=strerror(errno);
return -1;
}
return 0;
}
/*}}}*/
int FS_putbinaryInteger(int chn, long int x) /*{{{*/
{
char s[sizeof(long int)];
int i;
if (opened(chn,3)==-1) return -1;
for (i=0; i<sizeof(x); ++i,x>>=8) s[i]=(x&0xff);
if (write(file[chn]->binaryfd,s,sizeof(s))!=sizeof(s))
{
FS_errmsg=strerror(errno);
return -1;
}
return 0;
}
/*}}}*/
int FS_putbinaryReal(int chn, double x) /*{{{*/
{
if (opened(chn,3)==-1) return -1;
if (write(file[chn]->binaryfd,&x,sizeof(x))!=sizeof(x))
{
FS_errmsg=strerror(errno);
return -1;
}
return 0;
}
/*}}}*/
int FS_getbinaryString(int chn, struct String *s) /*{{{*/
{
ssize_t len;
if (opened(chn,3)==-1) return -1;
if (s->length && (len=read(file[chn]->binaryfd,s->character,s->length))!=s->length)
{
if (len==-1) FS_errmsg=strerror(errno);
else FS_errmsg=_("End of file");
return -1;
}
return 0;
}
/*}}}*/
int FS_getbinaryInteger(int chn, long int *x) /*{{{*/
{
char s[sizeof(long int)];
int i;
ssize_t len;
if (opened(chn,3)==-1) return -1;
if ((len=read(file[chn]->binaryfd,s,sizeof(s)))!=sizeof(s))
{
if (len==-1) FS_errmsg=strerror(errno);
else FS_errmsg=_("End of file");
return -1;
}
*x=(s[sizeof(x)-1]<0) ? -1 : 0;
for (i=sizeof(s)-1; i>=0; --i) *x=(*x<<8)|(s[i]&0xff);
return 0;
}
/*}}}*/
int FS_getbinaryReal(int chn, double *x) /*{{{*/
{
ssize_t len;
if (opened(chn,3)==-1) return -1;
if ((len=read(file[chn]->binaryfd,x,sizeof(*x)))!=sizeof(*x))
{
if (len==-1) FS_errmsg=strerror(errno);
else FS_errmsg=_("End of file");
return -1;
}
return 0;