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#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include "error.h"
#include "tty.h"
typedef struct {} *recorder;
struct ttyrec_frame
{
struct timeval t;
int len;
char *data;
tty snapshot;
struct ttyrec_frame *next;
};
typedef struct ttyrec_frame *ttyrec_frame;
typedef struct ttyrec
{
struct ttyrec_frame *tev_head, *tev_tail;
tty tev_vt;
int nchunk;
struct timeval ndelay;
} *ttyrec;
#define _TTYREC_H_NO_TYPES
#include "ttyrec.h"
#include "export.h"
#define SNAPSHOT_CHUNK 65536
#define tr ((ttyrec)arg)
static void synch_init_wait(const struct timeval *ts, void *arg)
{
tr->tev_head->t=*ts;
}
static const struct timeval maxd = {5,0};
static void synch_wait(const struct timeval *tv, void *arg)
{
if (tv->tv_sec>=maxd.tv_sec || tv->tv_sec<0)
tadd(tr->ndelay, maxd);
else
tadd(tr->ndelay, *tv);
}
static void synch_print(const char *buf, int len, void *arg)
{
struct ttyrec_frame *nf;
if (!(nf=malloc(sizeof(struct ttyrec_frame))))
return;
if (!(nf->data=malloc(len)))
{
free(nf);
return;
}
nf->len=len;
memcpy(nf->data, buf, len);
nf->t=tr->tev_tail->t;
tadd(nf->t, tr->ndelay);
tr->ndelay.tv_sec=tr->ndelay.tv_usec=0;
nf->snapshot=0;
nf->next=0;
tr->tev_tail->next=nf;
tr->tev_tail=nf;
tty_write(tr->tev_vt, buf, len);
if ((tr->nchunk+=len)>=SNAPSHOT_CHUNK) // do a snapshot every 64KB of data
{
nf->snapshot=tty_copy(tr->tev_vt);
tr->nchunk=0;
}
}
#undef tr
export ttyrec ttyrec_init(tty vt)
{
ttyrec tr = malloc(sizeof(struct ttyrec));
if (!tr)
return NULL;
memset(tr, 0, sizeof(struct ttyrec));
tr->tev_head = malloc(sizeof(struct ttyrec_frame));
memset(tr->tev_head, 0, sizeof(struct ttyrec_frame));
tr->tev_tail=tr->tev_head;
tr->nchunk=SNAPSHOT_CHUNK;
tr->tev_vt = vt? vt : tty_init(80, 25, 1);
tr->tev_head->snapshot = tty_copy(tr->tev_vt);
return tr;
}
export void ttyrec_free(ttyrec tr)
{
struct ttyrec_frame *tev_tail, *tc;
if (!tr)
return;
tev_tail=tr->tev_head;
while (tev_tail)
{
tc=tev_tail;
tev_tail=tev_tail->next;
free(tc->data);
if (tc->snapshot)
tty_free(tc->snapshot);
free(tc);
}
tty_free(tr->tev_vt);
free(tr);
}
export ttyrec ttyrec_load(int fd, const char *format, const char *filename, tty vt)
{
ttyrec tr;
if (!(tr=ttyrec_init(vt)))
return 0;
if (!ttyrec_r_play(fd, format, filename, synch_init_wait, synch_wait, synch_print, tr))
{
ttyrec_free(tr);
return 0;
}
return tr;
}
export struct ttyrec_frame* ttyrec_seek(const ttyrec tr, const struct timeval *t, tty *vt)
{
struct ttyrec_frame *tfv, *tfs;
if (!tr)
return 0;
tfv = tr->tev_head;
tfs = 0;
if (t)
while (tfv->next && tcmp(tfv->next->t, *t)<=0)
{
tfv=tfv->next;
if (tfv->snapshot)
tfs=tfv;
}
else
if (tfv->next)
tfv=tfv->next;
if (tfv->snapshot)
tfs=tfv;
if (vt)
{
tty_free(*vt);
if (tfs)
*vt=tty_copy(tfs->snapshot);
else
{
tfs=tr->tev_head;
*vt=tty_init(80, 25, 1);
}
if (!*vt)
return 0;
while (tfs!=tfv)
{
tfs = tfs->next;
if (tfs->data)
tty_write(*vt, tfs->data, tfs->len);
};
}
return tfv;
}
export struct ttyrec_frame* ttyrec_next_frame(ttyrec tr, struct ttyrec_frame *tfv)
{
if (!tfv)
return 0;
return tfv->next;
}
export void ttyrec_add_frame(ttyrec tr, const struct timeval *delay, const char *data, int len)
{
if (delay)
synch_wait(delay, tr);
synch_print(data, len, tr);
}
export int ttyrec_save(ttyrec tr, int fd, const char *format, const char *filename,
const struct timeval *selstart, const struct timeval *selend)
{
struct ttyrec_frame *fr;
recorder rec;
fr=ttyrec_seek(tr, selstart, 0);
if (!(rec=ttyrec_w_open(fd, format, filename, &fr->t)))
return 0;
while (fr)
{
if (selend && tcmp(fr->t, *selend)>0)
break;
ttyrec_w_write(rec, &fr->t, fr->data, fr->len);
fr=ttyrec_next_frame(tr, fr);
}
return ttyrec_w_close(rec);
}
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