/* * Return a `~/foo' like path if the user is under his home directory, * and restart from / if // found, * else the unmodified path. */ astr compact_path(const astr path) { astr buf = astr_new(); struct passwd *pw; size_t i; if ((pw = getpwuid(getuid())) == NULL) { /* User not found in password file. */ astr_cpy(buf, path); return buf; } /* Replace `/userhome/' (if existent) with `~/'. */ i = strlen(pw->pw_dir); if (!strncmp(pw->pw_dir, astr_cstr(path), i)) { astr_cpy_cstr(buf, "~/"); if (!strcmp(pw->pw_dir, "/")) astr_cat_cstr(buf, astr_char(path, 1)); else astr_cat_cstr(buf, astr_char(path, i + 1)); } else astr_cpy(buf, path); return buf; }
/* * Return a `~/foo' like path if the user is under his home directory, * else the unmodified path. */ astr compact_path (astr path) { struct passwd *pw = getpwuid (getuid ()); if (pw != NULL) { /* Replace `/userhome/' (if found) with `~/'. */ size_t homelen = strlen (pw->pw_dir); if (homelen > 0 && pw->pw_dir[homelen - 1] == '/') homelen--; if (astr_len (path) > homelen && !strncmp (pw->pw_dir, astr_cstr (path), homelen) && astr_get (path, homelen) == '/') astr_cpy (path, astr_cat_cstr (astr_new_cstr ("~/"), astr_cstr (path) + homelen + 1)); } return path; }
/* * This functions does some corrections and expansions to * the passed path: * * - expands `~/' and `~name/' expressions; * - replaces `//' with `/' (restarting from the root directory); * - removes `..' and `.' entries. * * The return value indicates success or failure. */ bool expand_path (astr path) { int ok = true; const char *sp = astr_cstr (path); astr epath = astr_new (); if (*sp != '/' && *sp != '~') { astr_cat (epath, agetcwd ()); if (astr_len (epath) == 0 || astr_get (epath, astr_len (epath) - 1) != '/') astr_cat_char (epath, '/'); } for (const char *p = sp; *p != '\0';) { if (*p == '/') { if (*++p == '/') { /* Got `//'. Restart from this point. */ while (*p == '/') p++; astr_truncate (epath, 0); } if (astr_len (epath) == 0 || astr_get (epath, astr_len (epath) - 1) != '/') astr_cat_char (epath, '/'); } else if (*p == '~' && (p == sp || p[-1] == '/')) { /* Got `/~' or leading `~'. Restart from this point. */ struct passwd *pw; astr_truncate (epath, 0); ++p; if (*p == '/') { /* Got `~/'. Insert the user's home directory. */ pw = getpwuid (getuid ()); if (pw == NULL) { ok = false; break; } if (!STREQ (pw->pw_dir, "/")) astr_cat_cstr (epath, pw->pw_dir); } else { /* Got `~something'. Insert that user's home directory. */ astr as = astr_new (); while (*p != '\0' && *p != '/') astr_cat_char (as, *p++); pw = getpwnam (astr_cstr (as)); if (pw == NULL) { ok = false; break; } astr_cat_cstr (epath, pw->pw_dir); } } else if (*p == '.' && (p[1] == '/' || p[1] == '\0')) { /* Got `.'. */ ++p; } else if (*p == '.' && p[1] == '.' && (p[2] == '/' || p[2] == '\0')) { /* Got `..'. */ if (astr_len (epath) >= 1 && astr_get (epath, astr_len (epath) - 1) == '/') astr_truncate (epath, astr_len (epath) - 1); while (astr_get (epath, astr_len (epath) - 1) != '/' && astr_len (epath) >= 1) astr_truncate (epath, astr_len (epath) - 1); p += 2; } if (*p != '~') while (*p != '\0' && *p != '/') astr_cat_char (epath, *p++); } astr_cpy (path, epath); return ok; }
/* * This functions does some corrections and expansions to * the passed path: * - expands `~/' and `~name/' expressions; * - replaces `//' with `/' (restarting from the root directory); * - removes `..' and `.' entries. * * If something goes wrong, the string is deleted and NULL returned */ astr expand_path(astr path) { int ret = TRUE; struct passwd *pw; const char *sp = astr_cstr(path); astr epath = astr_new(); if (*sp != '/') { astr_cat_delete(epath, agetcwd()); if (astr_len(epath) == 0 || *astr_char(epath, -1) != '/') astr_cat_char(epath, '/'); } while (*sp != '\0') { if (*sp == '/') { if (*++sp == '/') { /* Got `//'. Restart from this point. */ while (*sp == '/') sp++; astr_truncate(epath, 0); } astr_cat_char(epath, '/'); } else if (*sp == '~') { if (*(sp + 1) == '/') { /* Got `~/'. Restart from this point and insert the user's home directory. */ astr_truncate(epath, 0); if ((pw = getpwuid(getuid())) == NULL) { ret = FALSE; break; } if (strcmp(pw->pw_dir, "/") != 0) astr_cat_cstr(epath, pw->pw_dir); ++sp; } else { /* Got `~something'. Restart from this point and insert that user's home directory. */ astr as = astr_new(); astr_truncate(epath, 0); ++sp; while (*sp != '\0' && *sp != '/') astr_cat_char(as, *sp++); pw = getpwnam(astr_cstr(as)); astr_delete(as); if (pw == NULL) { ret = FALSE; break; } astr_cat_cstr(epath, pw->pw_dir); } } else if (*sp == '.') { if (*(sp + 1) == '/' || *(sp + 1) == '\0') { ++sp; if (*sp == '/' && *(sp + 1) != '/') ++sp; } else if (*(sp + 1) == '.' && (*(sp + 2) == '/' || *(sp + 2) == '\0')) { if (astr_len(epath) >= 1 && *astr_char(epath, -1) == '/') astr_truncate(epath, -1); while (*astr_char(epath, -1) != '/' && astr_len(epath) >= 1) astr_truncate(epath, -1); sp += 2; if (*sp == '/' && *(sp + 1) != '/') ++sp; } else goto got_component; } else { const char *p; got_component: p = sp; while (*p != '\0' && *p != '/') p++; if (*p == '\0') { /* Final filename */ astr_cat_cstr(epath, sp); break; } else { /* Non-final directory */ while (*sp != '/') astr_cat_char(epath, *sp++); } } } astr_cpy(path, epath); astr_delete(epath); if (!ret) { astr_delete(path); return NULL; } return path; }
static astr do_minibuf_read (const char *prompt, const char *value, size_t pos, Completion * cp, History * hp) { static int overwrite_mode = 0; int c, thistab, lasttab = -1; size_t prompt_len; char *s; astr as = astr_new_cstr (value), saved = NULL; prompt_len = strlen (prompt); if (pos == SIZE_MAX) pos = astr_len (as); for (;;) { switch (lasttab) { case COMPLETION_MATCHEDNONUNIQUE: s = " [Complete, but not unique]"; break; case COMPLETION_NOTMATCHED: s = " [No match]"; break; case COMPLETION_MATCHED: s = " [Sole completion]"; break; default: s = ""; } draw_minibuf_read (prompt, astr_cstr (as), prompt_len, s, pos); thistab = -1; switch (c = getkey ()) { case KBD_NOKEY: break; case KBD_CTRL | 'z': FUNCALL (suspend_emacs); break; case KBD_RET: term_move (term_height () - 1, 0); term_clrtoeol (); if (saved) astr_delete (saved); return as; case KBD_CANCEL: term_move (term_height () - 1, 0); term_clrtoeol (); if (saved) astr_delete (saved); astr_delete (as); return NULL; case KBD_CTRL | 'a': case KBD_HOME: pos = 0; break; case KBD_CTRL | 'e': case KBD_END: pos = astr_len (as); break; case KBD_CTRL | 'b': case KBD_LEFT: if (pos > 0) --pos; else ding (); break; case KBD_CTRL | 'f': case KBD_RIGHT: if (pos < astr_len (as)) ++pos; else ding (); break; case KBD_CTRL | 'k': /* FIXME: do kill-register save. */ if (pos < astr_len (as)) astr_truncate (as, pos); else ding (); break; case KBD_BS: if (pos > 0) astr_remove (as, --pos, 1); else ding (); break; case KBD_CTRL | 'd': case KBD_DEL: if (pos < astr_len (as)) astr_remove (as, pos, 1); else ding (); break; case KBD_INS: overwrite_mode = overwrite_mode ? 0 : 1; break; case KBD_META | 'v': case KBD_PGUP: if (cp == NULL) { ding (); break; } if (get_completion_flags (cp) & CFLAG_POPPEDUP) { completion_scroll_down (); thistab = lasttab; } break; case KBD_CTRL | 'v': case KBD_PGDN: if (cp == NULL) { ding (); break; } if (get_completion_flags (cp) & CFLAG_POPPEDUP) { completion_scroll_up (); thistab = lasttab; } break; case KBD_UP: case KBD_META | 'p': if (hp) { const char *elem = previous_history_element (hp); if (elem) { if (!saved) saved = astr_cpy (astr_new (), as); astr_cpy_cstr (as, elem); } } break; case KBD_DOWN: case KBD_META | 'n': if (hp) { const char *elem = next_history_element (hp); if (elem) astr_cpy_cstr (as, elem); else if (saved) { astr_cpy (as, saved); astr_delete (saved); saved = NULL; } } break; case KBD_TAB: got_tab: if (cp == NULL) { ding (); break; } if (lasttab != -1 && lasttab != COMPLETION_NOTMATCHED && get_completion_flags (cp) & CFLAG_POPPEDUP) { completion_scroll_up (); thistab = lasttab; } else { astr bs = astr_new (); astr_cpy (bs, as); thistab = completion_try (cp, bs, true); astr_delete (bs); switch (thistab) { case COMPLETION_MATCHED: case COMPLETION_MATCHEDNONUNIQUE: case COMPLETION_NONUNIQUE: { bs = astr_new (); if (get_completion_flags (cp) & CFLAG_FILENAME) astr_cat (bs, get_completion_path (cp)); astr_ncat_cstr (bs, get_completion_match (cp), get_completion_matchsize (cp)); if (strncmp (astr_cstr (as), astr_cstr (bs), astr_len (bs)) != 0) thistab = -1; astr_delete (as); as = bs; pos = astr_len (as); break; } case COMPLETION_NOTMATCHED: ding (); } } break; case ' ': if (cp != NULL) goto got_tab; /* FALLTHROUGH */ default: if (c > 255 || !isprint (c)) { ding (); break; } astr_insert_char (as, pos++, c); if (overwrite_mode && pos != astr_len (as)) astr_remove (as, pos, 1); } lasttab = thistab; } }