char*
dollar(Exec *e, char *s, int *namelen)
{
int n;
static char *abuf;
char *t;
*namelen = 1;
if(e!=nil && '0'<=s[0] && s[0]<='9')
return nonnil(e->match[s[0]-'0']);
for(t=s; isalnum(*t); t++)
;
n = t-s;
*namelen = n;
if(e != nil){
if(n == 3){
if(memcmp(s, "src", 3) == 0)
return nonnil(e->msg->src);
if(memcmp(s, "dst", 3) == 0)
return nonnil(e->msg->dst);
if(memcmp(s, "dir", 3) == 0)
return filename(e, e->dir);
}
if(n == 4){
if(memcmp(s, "attr", 4) == 0){
free(abuf);
abuf = plumbpackattr(e->msg->attr);
return nonnil(abuf);
}
if(memcmp(s, "data", 4) == 0)
return nonnil(e->msg->data);
if(memcmp(s, "file", 4) == 0)
return filename(e, e->file);
if(memcmp(s, "type", 4) == 0)
return nonnil(e->msg->type);
if(memcmp(s, "wdir", 3) == 0)
return nonnil(e->msg->wdir);
}
}
return variable(s, n);
}
char*
plumbpack(Plumbmsg *m, int *np)
{
int n, ndata;
char *buf, *p, *attr;
ndata = m->ndata;
if(ndata < 0)
ndata = Strlen(m->data);
attr = plumbpackattr(m->attr);
n = Strlen(m->src)+1 + Strlen(m->dst)+1 + Strlen(m->wdir)+1 +
Strlen(m->type)+1 + Strlen(attr)+1 + 16 + ndata;
buf = malloc(n+1); /* +1 for '\0' */
if(buf == nil){
free(attr);
return nil;
}
p = Strcpy(buf, m->src);
*p++ = '\n';
p = Strcpy(p, m->dst);
*p++ = '\n';
p = Strcpy(p, m->wdir);
*p++ = '\n';
p = Strcpy(p, m->type);
*p++ = '\n';
p = Strcpy(p, attr);
*p++ = '\n';
p += sprint(p, "%d\n", ndata);
memmove(p, m->data, ndata);
*np = (p-buf)+ndata;
buf[*np] = '\0'; /* null terminate just in case */
if(*np >= n+1)
abort();
free(attr);
return buf;
}
