int xdl_prepare_env(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
xdfenv_t *xe) {
long enl1, enl2;
xdlclassifier_t cf;
enl1 = xdl_guess_lines(mf1) + 1;
enl2 = xdl_guess_lines(mf2) + 1;
if (xdl_init_classifier(&cf, enl1 + enl2 + 1, xpp->flags) < 0) {
return -1;
}
if (xdl_prepare_ctx(mf1, enl1, xpp, &cf, &xe->xdf1) < 0) {
xdl_free_classifier(&cf);
return -1;
}
if (xdl_prepare_ctx(mf2, enl2, xpp, &cf, &xe->xdf2) < 0) {
xdl_free_ctx(&xe->xdf1);
xdl_free_classifier(&cf);
return -1;
}
xdl_free_classifier(&cf);
if (xdl_optimize_ctxs(&xe->xdf1, &xe->xdf2) < 0) {
xdl_free_ctx(&xe->xdf2);
xdl_free_ctx(&xe->xdf1);
return -1;
}
return 0;
}
static int xdl_init_recfile(mmfile_t *mf, int ispatch, recfile_t *rf) {
long narec, nrec, bsize;
recinfo_t *recs, *rrecs;
char const *blk, *cur, *top, *eol;
narec = xdl_guess_lines(mf);
if (!(recs = (recinfo_t *) xdl_malloc(narec * sizeof(recinfo_t)))) {
return -1;
}
nrec = 0;
if ((cur = blk = (char const *)xdl_mmfile_first(mf, &bsize)) != NULL) {
for (top = blk + bsize;;) {
if (cur >= top) {
if (!(cur = blk = (char const *)xdl_mmfile_next(mf, &bsize)))
break;
top = blk + bsize;
}
if (nrec >= narec) {
narec *= 2;
if (!(rrecs = (recinfo_t *)
xdl_realloc(recs, narec * sizeof(recinfo_t)))) {
xdl_free(recs);
return -1;
}
recs = rrecs;
}
recs[nrec].ptr = cur;
if (!(eol = (char*)memchr(cur, '\n', top - cur)))
eol = top - 1;
recs[nrec].size = (long) (eol - cur) + 1;
if (ispatch && *cur == '\\' && nrec > 0 && recs[nrec - 1].size > 0 &&
recs[nrec - 1].ptr[recs[nrec - 1].size - 1] == '\n')
recs[nrec - 1].size--;
else
nrec++;
cur = eol + 1;
}
}
rf->mf = mf;
rf->nrec = nrec;
rf->recs = recs;
return 0;
}