/* _walk_in(): inner loop of _walk(), producing map.
*/
static u2_noun
_walk_in(u2_reck* rec_u, const c3_c* dir_c, c3_w len_w)
{
DIR* dir_d = opendir(dir_c);
u2_noun map = u2_nul;
if ( !dir_d ) {
return u2_nul;
}
else while ( 1 ) {
struct dirent ent_n;
struct dirent* out_n;
if ( readdir_r(dir_d, &ent_n, &out_n) != 0 ) {
uL(fprintf(uH, "%s: %s\n", dir_c, strerror(errno)));
break;
}
else if ( !out_n ) {
break;
}
else if ( !strcmp(out_n->d_name, ".") ||
!strcmp(out_n->d_name, "..") ||
('~' == out_n->d_name[0]) ||
('.' == out_n->d_name[0]) ) // XX restricts some spans
{
continue;
}
else {
c3_c* fil_c = out_n->d_name;
c3_w lef_w = len_w + 1 + strlen(fil_c);
c3_c* pat_c = malloc(lef_w + 1);
struct stat buf_b;
strcpy(pat_c, dir_c);
pat_c[len_w] = '/';
strcpy(pat_c + len_w + 1, fil_c);
if ( 0 != stat(pat_c, &buf_b) ) {
free(pat_c);
} else {
u2_noun tim = c3_stat_mtime(&buf_b);
if ( !S_ISDIR(buf_b.st_mode) ) {
c3_c* dot_c = strrchr(fil_c, '.');
c3_c* nam_c = strdup(fil_c);
c3_c* ext_c = strdup(dot_c + 1);
nam_c[dot_c - fil_c] = 0;
{
u2_noun nam = u2_ci_string(nam_c);
u2_noun ext = u2_ci_string(ext_c);
u2_noun get = u2_ckd_by_get(u2k(map), u2k(nam));
u2_noun dat = u2_walk_load(pat_c);
u2_noun hax;
if ( !strcmp("noun", ext_c) ) {
dat = u2_cke_cue(dat);
}
hax = u2_do("sham", u2k(dat));
if ( u2_none == get ) { get = u2_nul; }
get = u2_ckd_by_put(get, ext, u2nt(u2_yes, hax, dat));
map = u2_ckd_by_put(map, nam, u2nc(u2_no, get));
}
free(nam_c);
free(ext_c);
}
else {
u2_noun dir = _walk_in(rec_u, pat_c, lef_w);
if ( u2_nul != dir ) {
map = u2_ckd_by_put
(map, u2_ci_string(fil_c), u2nc(u2_no, dir));
}
else u2z(tim);
}
free(pat_c);
}
}
}
closedir(dir_d);
return map;
}
/* _unix_dir_update(): update directory, true if changed.
*/
static u2_bean
_unix_dir_update(u2_udir* dir_u, DIR* rid_u)
{
u2_bean cha = u2_no;
// uL(fprintf(uH, "dir_update ON %s\n", dir_u->pax_c));
/* use dry bits as markers
*/
{
u2_udir* dis_u;
u2_ufil* fil_u;
for ( dis_u = dir_u->dis_u; dis_u; dis_u = dis_u->nex_u ) {
dis_u->dry = u2_yes;
}
for ( fil_u = dir_u->fil_u; fil_u; fil_u = fil_u->nex_u ) {
fil_u->dry = u2_yes;
}
}
/* iterate through directory, opening and updating
*/
while ( 1 ) {
struct dirent ent_u;
struct dirent* out_u;
if ( readdir_r(rid_u, &ent_u, &out_u) != 0 ) {
uL(fprintf(uH, "%s: %s\n", dir_u->pax_c, strerror(errno)));
c3_assert(0);
}
else if ( !out_u ) {
break;
}
else if ( ('.' == out_u->d_name[0]) ) { // XX screws up some paths
continue;
}
else {
c3_c* pax_c = _unix_down(dir_u->pax_c, out_u->d_name);
struct stat buf_u;
// uL(fprintf(uH, " in %s\n", pax_c));
if ( 0 != stat(pax_c, &buf_u) ) {
free(pax_c);
continue;
}
else {
if ( !S_ISDIR(buf_u.st_mode) ) {
mpz_t mod_mp;
u2_ufil* fil_u;
{
u2_noun mod = c3_stat_mtime(&buf_u);
u2_cr_mp(mod_mp, mod);
u2z(mod);
}
for ( fil_u = dir_u->fil_u; fil_u; fil_u = fil_u->nex_u ) {
if ( !strcmp(pax_c, fil_u->pax_c) ) {
fil_u->dry = u2_no;
cha = u2_or(cha, _unix_file_update(fil_u, mod_mp));
break;
}
}
if ( !fil_u ) {
fil_u = malloc(sizeof(u2_ufil));
// uL(fprintf(uH, "found file %s\n", pax_c));
_unix_file_watch(fil_u, dir_u, pax_c, mod_mp);
fil_u->nex_u = dir_u->fil_u;
dir_u->fil_u = fil_u;
cha = u2_yes;
}
mpz_clear(mod_mp);
}
else {
DIR* red_u = _unix_opendir(pax_c);
u2_udir* dis_u;
for ( dis_u = dir_u->dis_u; dis_u; dis_u = dis_u->nex_u ) {
if ( !strcmp(pax_c, dis_u->pax_c) ) {
dis_u->dry = u2_no;
cha = u2_or(cha, _unix_dir_update(dis_u, red_u));
break;
}
}
if ( !dis_u ) {
dis_u = malloc(sizeof(u2_udir));
// uL(fprintf(uH, "found directory %s\n", pax_c));
_unix_dir_watch(dis_u, dir_u, pax_c);
_unix_dir_update(dis_u, red_u);
dis_u->nex_u = dir_u->dis_u;
dir_u->dis_u = dis_u;
cha = u2_yes;
}
}
}
}
}
/* use dry bits as markers
*/
{
u2_udir** dis_u;
u2_ufil** fil_u;
for ( dis_u = &(dir_u->dis_u); *dis_u; ) {
if ( u2_no == (*dis_u)->dry ) {
(*dis_u)->dry = u2_yes;
dis_u = &(*dis_u)->nex_u;
}
else {
u2_udir* ded_u = *dis_u;
u2_udir* nex_u = ded_u->nex_u;
// uL(fprintf(uH, "removed directory %s\n", ded_u->pax_c));
_unix_dir_free(ded_u);
free(ded_u);
*dis_u = nex_u;
cha = u2_yes;
}
}
for ( fil_u = &(dir_u->fil_u); *fil_u; ) {
if ( u2_no == (*fil_u)->dry ) {
fil_u = &(*fil_u)->nex_u;
}
else {
u2_ufil* ded_u = *fil_u;
u2_ufil* nex_u = ded_u->nex_u;
// uL(fprintf(uH, "removed file %s\n", ded_u->pax_c));
_unix_file_free(ded_u);
free(ded_u);
*fil_u = nex_u;
cha = u2_yes;
}
}
}
closedir(rid_u);
// uL(fprintf(uH, "dir_update OFF %s\n", dir_u->pax_c));
return cha;
}
/* _unix_dir_update(): update directory.
*/
static void
_unix_dir_update(u2_udir* dir_u, DIR* rid_u)
{
if ( u2_yes == dir_u->dry ) {
return;
}
else {
// Update all wet subdirectories.
//
u2_udir** dis_u;
u2_ufil** fil_u;
for ( dis_u = &(dir_u->dis_u); *dis_u; ) {
if ( u2_yes == (*dis_u)->dry ) {
dis_u = &(*dis_u)->nex_u;
}
else {
DIR* red_u = opendir((*dis_u)->pax_c);
if ( 0 == red_u ) {
u2_udir* ded_u = *dis_u;
u2_udir* nex_u = ded_u->nex_u;
// uL(fprintf(uH, "removed directory %s\n", ded_u->pax_c));
_unix_dir_free(ded_u);
*dis_u = nex_u;
}
else {
_unix_dir_update(*dis_u, red_u);
closedir(red_u);
dis_u = &(*dis_u)->nex_u;
}
}
}
// Check all wet files to see if they need deleting.
//
for ( fil_u = &(dir_u->fil_u); *fil_u; ) {
if ( u2_yes == (*fil_u)->dry ) {
fil_u = &(*fil_u)->nex_u;
}
else {
struct stat buf_u;
if ( -1 == stat((*fil_u)->pax_c, &buf_u) ||
!(S_IFREG & buf_u.st_mode) )
{
u2_ufil* ded_u = *fil_u;
u2_ufil* nex_u = ded_u->nex_u;
// uL(fprintf(uH, "removed file %s\n", ded_u->pax_c));
_unix_file_free(ded_u);
*fil_u = nex_u;
}
else {
fil_u = &(*fil_u)->nex_u;
}
}
}
// Scan for new files/directories. XX - this is O(n^2) brute
// force, and could be done by smarter event processing.
//
while ( 1 ) {
struct dirent ent_u;
struct dirent* out_u;
if ( readdir_r(rid_u, &ent_u, &out_u) != 0 ) {
// uL(fprintf(uH, "%s: %s\n", dir_u->pax_c, strerror(errno)));
c3_assert(0);
}
else if ( !out_u ) {
break;
}
else if ( ('.' == out_u->d_name[0]) ) { // XX screws up some paths
continue;
}
else {
c3_c* pax_c = _unix_down(dir_u->pax_c, out_u->d_name);
struct stat buf_u;
// uL(fprintf(uH, " in %s\n", pax_c));
if ( 0 != stat(pax_c, &buf_u) ) {
free(pax_c);
continue;
}
else {
if ( !S_ISDIR(buf_u.st_mode) ) {
mpz_t mod_mp;
u2_ufil* fil_u;
if ( ( NULL == strrchr(out_u->d_name, '.')) ||
( '~' == out_u->d_name[strlen(out_u->d_name) - 1] )
) {
continue;
}
{
u2_noun mod = c3_stat_mtime(&buf_u);
u2_cr_mp(mod_mp, mod);
u2z(mod);
}
for ( fil_u = dir_u->fil_u; fil_u; fil_u = fil_u->nex_u ) {
if ( !strcmp(pax_c, fil_u->pax_c) ) {
break;
}
}
if ( !fil_u ) {
fil_u = c3_malloc(sizeof(u2_ufil));
// uL(fprintf(uH, "found file %s\n", pax_c));
_unix_file_watch(fil_u, dir_u, pax_c, mod_mp);
fil_u->nex_u = dir_u->fil_u;
dir_u->fil_u = fil_u;
}
mpz_clear(mod_mp);
}
else {
u2_udir* dis_u;
for ( dis_u = dir_u->dis_u; dis_u; dis_u = dis_u->nex_u ) {
if ( !strcmp(pax_c, dis_u->pax_c) ) {
break;
}
}
if ( !dis_u ) {
DIR* red_u = _unix_opendir(pax_c);
dis_u = c3_malloc(sizeof(u2_udir));
// uL(fprintf(uH, "found directory %s\n", pax_c));
_unix_dir_watch(dis_u, dir_u, pax_c);
_unix_dir_update(dis_u, red_u);
dis_u->nex_u = dir_u->dis_u;
dir_u->dis_u = dis_u;
closedir(red_u);
} else {
free(pax_c);
}
}
}
}
}
}
}
