mirror of
https://github.com/urbit/shrub.git
synced 2024-11-28 13:54:20 +03:00
304 lines
6.4 KiB
C
304 lines
6.4 KiB
C
/* v/walk.c
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**
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** This file is in the public domain.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <setjmp.h>
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#include <gmp.h>
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#include <dirent.h>
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#include <stdint.h>
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#include <uv.h>
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#include <curses.h>
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#include <termios.h>
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#include <term.h>
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#include <errno.h>
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#include "all.h"
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#include "f/coal.h"
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#include "v/vere.h"
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/* |%
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** ++ arch :: fs node
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** $% [& p=@uvI q=*] :: file, hash/data
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** [| p=(map ,@ta arch)] :: directory
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** == ::
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** --
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*/
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#if 0
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static u2_noun
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_walk_ok(u2_reck* rec_u, u2_noun nod)
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{
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u2_noun don = u2_cn_mung(u2k(rec_u->toy.arch), u2k(nod));
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if ( u2_no == u2_sing(nod, don) ) {
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c3_assert(0);
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}
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u2z(don);
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return nod;
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}
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#endif
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/* u2_walk_safe(): load file or 0.
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*/
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u2_noun
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u2_walk_safe(c3_c* pas_c)
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{
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struct stat buf_b;
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c3_i fid_i = open(pas_c, O_RDONLY, 0644);
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c3_w fln_w, red_w;
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c3_y* pad_y;
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if ( (fid_i < 0) || (fstat(fid_i, &buf_b) < 0) ) {
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// uL(fprintf(uH, "%s: %s\n", pas_c, strerror(errno)));
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return 0;
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}
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fln_w = buf_b.st_size;
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pad_y = malloc(buf_b.st_size);
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red_w = read(fid_i, pad_y, fln_w);
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close(fid_i);
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if ( fln_w != red_w ) {
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free(pad_y);
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return 0;
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}
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else {
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u2_noun pad = u2_ci_bytes(fln_w, (c3_y *)pad_y);
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free(pad_y);
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return pad;
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}
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}
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/* u2_walk_load(): load file or bail.
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*/
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u2_noun
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u2_walk_load(c3_c* pas_c)
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{
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struct stat buf_b;
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c3_i fid_i = open(pas_c, O_RDONLY, 0644);
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c3_w fln_w, red_w;
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c3_y* pad_y;
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if ( (fid_i < 0) || (fstat(fid_i, &buf_b) < 0) ) {
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uL(fprintf(uH, "%s: %s\n", pas_c, strerror(errno)));
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return u2_cm_bail(c3__fail);
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}
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fln_w = buf_b.st_size;
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pad_y = malloc(buf_b.st_size);
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red_w = read(fid_i, pad_y, fln_w);
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close(fid_i);
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if ( fln_w != red_w ) {
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free(pad_y);
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return u2_cm_bail(c3__fail);
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}
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else {
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u2_noun pad = u2_ci_bytes(fln_w, (c3_y *)pad_y);
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free(pad_y);
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return pad;
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}
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}
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/* u2_walk_save(): save file or bail.
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*/
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void
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u2_walk_save(c3_c* pas_c, u2_noun tim, u2_atom pad)
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{
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c3_i fid_i = open(pas_c, O_WRONLY | O_CREAT | O_TRUNC, 0666);
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c3_w fln_w, rit_w;
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c3_y* pad_y;
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if ( fid_i < 0 ) {
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uL(fprintf(uH, "%s: %s\n", pas_c, strerror(errno)));
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u2_cm_bail(c3__fail);
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}
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fln_w = u2_met(3, pad);
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pad_y = malloc(fln_w);
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u2_cr_bytes(0, fln_w, pad_y, pad);
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u2z(pad);
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rit_w = write(fid_i, pad_y, fln_w);
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close(fid_i);
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free(pad_y);
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if ( rit_w != fln_w ) {
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uL(fprintf(uH, "%s: %s\n", pas_c, strerror(errno)));
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u2_cm_bail(c3__fail);
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}
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if ( 0 != tim ) {
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struct timeval tim_tv[2];
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u2_time_out_tv(&tim_tv[0], u2k(tim));
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u2_time_out_tv(&tim_tv[1], tim);
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utimes(pas_c, tim_tv);
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}
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}
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/* _walk_in(): inner loop of _walk(), producing map.
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*/
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static u2_noun
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_walk_in(u2_reck* rec_u, const c3_c* dir_c, c3_w len_w)
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{
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DIR* dir_d = opendir(dir_c);
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u2_noun map = u2_nul;
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if ( !dir_d ) {
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return u2_nul;
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}
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else while ( 1 ) {
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struct dirent ent_n;
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struct dirent* out_n;
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if ( readdir_r(dir_d, &ent_n, &out_n) != 0 ) {
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uL(fprintf(uH, "%s: %s\n", dir_c, strerror(errno)));
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break;
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}
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else if ( !out_n ) {
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break;
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}
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else if ( !strcmp(out_n->d_name, ".") ||
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!strcmp(out_n->d_name, "..") ||
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('~' == out_n->d_name[0]) ||
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('.' == out_n->d_name[0]) ) // XX restricts some spans
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{
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continue;
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}
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else {
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c3_c* fil_c = out_n->d_name;
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c3_w lef_w = len_w + 1 + strlen(fil_c);
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c3_c* pat_c = malloc(lef_w + 1);
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struct stat buf_b;
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strncpy(pat_c, dir_c, lef_w);
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pat_c[len_w] = '/';
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strncpy(pat_c + len_w + 1, fil_c, lef_w);
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pat_c[lef_w] = '\0';
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if ( 0 != stat(pat_c, &buf_b) ) {
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free(pat_c);
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} else {
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u2_noun tim = c3_stat_mtime(&buf_b);
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if ( !S_ISDIR(buf_b.st_mode) ) {
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c3_c* dot_c = strrchr(fil_c, '.');
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c3_c* nam_c = strdup(fil_c);
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c3_c* ext_c = strdup(dot_c + 1);
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nam_c[dot_c - fil_c] = 0;
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{
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u2_noun nam = u2_ci_string(nam_c);
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u2_noun ext = u2_ci_string(ext_c);
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u2_noun get = u2_ckd_by_get(u2k(map), u2k(nam));
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u2_noun dat = u2_walk_load(pat_c);
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u2_noun hax;
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if ( !strcmp("noun", ext_c) ) {
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dat = u2_cke_cue(dat);
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}
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hax = u2_do("sham", u2k(dat));
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if ( u2_none == get ) { get = u2_nul; }
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get = u2_ckd_by_put(get, ext, u2nt(u2_yes, hax, dat));
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map = u2_ckd_by_put(map, nam, u2nc(u2_no, get));
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}
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free(nam_c);
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free(ext_c);
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}
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else {
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u2_noun dir = _walk_in(rec_u, pat_c, lef_w);
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if ( u2_nul != dir ) {
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map = u2_ckd_by_put
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(map, u2_ci_string(fil_c), u2nc(u2_no, dir));
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}
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else u2z(tim);
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}
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free(pat_c);
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}
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}
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}
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closedir(dir_d);
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return map;
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}
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/* u2_walk(): traverse `dir_c` to produce an arch, updating `old`.
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*/
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u2_noun
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u2_walk(u2_reck* rec_u, const c3_c* dir_c, u2_noun old)
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{
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// XX - obviously, cheaper to update old data.
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u2z(old);
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{
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struct stat buf_b;
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if ( 0 != stat(dir_c, &buf_b) ) {
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uL(fprintf(uH, "can't stat %s\n", dir_c));
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// return u2_cm_bail(c3__fail);
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c3_assert(0);
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}
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else {
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return u2nc(u2_no,
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_walk_in(rec_u, dir_c, strlen(dir_c)));
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}
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}
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}
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/* u2_path(): C unix path in computer for file or directory.
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*/
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c3_c*
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u2_path(u2_bean fyl, u2_noun pax)
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{
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c3_w len_w;
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c3_c *pas_c;
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// measure
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//
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len_w = strlen(u2_Local);
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{
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u2_noun wiz = pax;
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while ( u2_nul != wiz ) {
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len_w += (1 + u2_cr_met(3, u2h(wiz)));
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wiz = u2t(wiz);
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}
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}
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// cut
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//
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pas_c = malloc(len_w + 1);
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strncpy(pas_c, u2_Local, len_w);
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pas_c[len_w] = '\0';
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{
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u2_noun wiz = pax;
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c3_c* waq_c = (pas_c + strlen(pas_c));
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while ( u2_nul != wiz ) {
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c3_w tis_w = u2_cr_met(3, u2h(wiz));
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if ( (u2_yes == fyl) && (u2_nul == u2t(wiz)) ) {
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*waq_c++ = '.';
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} else *waq_c++ = '/';
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u2_cr_bytes(0, tis_w, (c3_y*)waq_c, u2h(wiz));
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waq_c += tis_w;
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wiz = u2t(wiz);
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}
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*waq_c = 0;
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}
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u2z(pax);
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return pas_c;
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}
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