/* Look for needle, starting at (current, current_x). begin is the line
* where we first started searching, at column begin_x. The return
* value specifies whether we found anything. If we did, set needle_len
* to the length of the string we found if it isn't NULL. */
bool findnextstr(
#ifndef DISABLE_SPELLER
bool whole_word_only,
#endif
const filestruct *begin, size_t begin_x,
const char *needle, size_t *needle_len)
{
size_t found_len;
/* The length of the match we find. */
size_t current_x_find = 0;
/* The location in the current line of the match we find. */
ssize_t current_y_find = openfile->current_y;
filestruct *fileptr = openfile->current;
const char *rev_start = fileptr->data, *found = NULL;
time_t lastkbcheck = time(NULL);
/* rev_start might end up 1 character before the start or after the
* end of the line. This won't be a problem because strstrwrapper()
* will return immediately and say that no match was found, and
* rev_start will be properly set when the search continues on the
* previous or next line. */
rev_start +=
#ifndef NANO_TINY
ISSET(BACKWARDS_SEARCH) ?
((openfile->current_x == 0) ? -1 : move_mbleft(fileptr->data, openfile->current_x)) :
#endif
move_mbright(fileptr->data, openfile->current_x);
/* Look for needle in the current line we're searching. */
enable_nodelay();
while (TRUE) {
if (time(NULL) - lastkbcheck > 1) {
int input = parse_kbinput(edit);
lastkbcheck = time(NULL);
if (input && func_from_key(&input) == do_cancel) {
statusbar(_("Cancelled"));
return FALSE;
}
}
found = strstrwrapper(fileptr->data, needle, rev_start);
/* We've found a potential match. */
if (found != NULL) {
#ifndef DISABLE_SPELLER
bool found_whole = FALSE;
/* Is this potential match a whole word? */
#endif
/* Set found_len to the length of the potential match. */
found_len =
#ifdef HAVE_REGEX_H
ISSET(USE_REGEXP) ?
regmatches[0].rm_eo - regmatches[0].rm_so :
#endif
strlen(needle);
#ifndef DISABLE_SPELLER
/* If we're searching for whole words, see if this potential
* match is a whole word. */
if (whole_word_only) {
char *word = mallocstrncpy(NULL, found, found_len + 1);
word[found_len] = '\0';
found_whole = is_whole_word(found - fileptr->data,
fileptr->data, word);
free(word);
}
/* If we're searching for whole words and this potential
* match isn't a whole word, continue searching. */
if (!whole_word_only || found_whole)
#endif
break;
}
if (search_last_line) {
/* We've finished processing the file, so get out. */
not_found_msg(needle);
disable_nodelay();
return FALSE;
}
/* Move to the previous or next line in the file. */
#ifndef NANO_TINY
if (ISSET(BACKWARDS_SEARCH)) {
fileptr = fileptr->prev;
current_y_find--;
} else {
#endif
fileptr = fileptr->next;
current_y_find++;
#ifndef NANO_TINY
}
#endif
if (fileptr == NULL) {
/* We've reached the start or end of the buffer, so wrap around. */
#ifndef NANO_TINY
if (ISSET(BACKWARDS_SEARCH)) {
fileptr = openfile->filebot;
current_y_find = editwinrows - 1;
} else {
#endif
fileptr = openfile->fileage;
current_y_find = 0;
#ifndef NANO_TINY
}
#endif
statusbar(_("Search Wrapped"));
}
if (fileptr == begin)
/* We've reached the original starting line. */
search_last_line = TRUE;
rev_start = fileptr->data;
#ifndef NANO_TINY
if (ISSET(BACKWARDS_SEARCH))
rev_start += strlen(fileptr->data);
#endif
}
/* We found an instance. */
current_x_find = found - fileptr->data;
/* Ensure we haven't wrapped around again! */
if (search_last_line &&
#ifndef NANO_TINY
((!ISSET(BACKWARDS_SEARCH) && current_x_find > begin_x) ||
(ISSET(BACKWARDS_SEARCH) && current_x_find < begin_x))
#else
current_x_find > begin_x
#endif
) {
not_found_msg(needle);
disable_nodelay();
return FALSE;
}
disable_nodelay();
/* We've definitely found something. */
openfile->current = fileptr;
openfile->current_x = current_x_find;
openfile->placewewant = xplustabs();
openfile->current_y = current_y_find;
/* needle_len holds the length of needle. */
if (needle_len != NULL)
*needle_len = found_len;
return TRUE;
}
/* Go to the specified line and column, or ask for them if interactive
* is TRUE. Save the x-coordinate and y-coordinate if save_pos is TRUE.
* Update the screen afterwards if allow_update is TRUE. Note that both
* the line and column numbers should be one-based. */
void do_gotolinecolumn(ssize_t line, ssize_t column, bool use_answer,
bool interactive, bool save_pos, bool allow_update)
{
if (interactive) {
char *ans = mallocstrcpy(NULL, answer);
functionptrtype func;
/* Ask for the line and column. */
int i = do_prompt(FALSE,
#ifndef DISABLE_TABCOMP
TRUE,
#endif
MGOTOLINE, use_answer ? ans : "",
#ifndef DISABLE_HISTORIES
NULL,
#endif
/* TRANSLATORS: This is a prompt. */
edit_refresh, _("Enter line number, column number"));
free(ans);
/* Cancel, or Enter with blank string. */
if (i < 0) {
statusbar(_("Cancelled"));
display_main_list();
return;
}
func = func_from_key(&i);
if (func == gototext_void) {
/* Keep answer up on the statusbar. */
search_init(TRUE, TRUE);
do_search();
return;
}
/* Do a bounds check. Display a warning on an out-of-bounds
* line or column number only if we hit Enter at the statusbar
* prompt. */
if (!parse_line_column(answer, &line, &column) || line < 1 ||
column < 1) {
if (i == 0)
statusbar(_("Invalid line or column number"));
display_main_list();
return;
}
} else {
if (line < 1)
line = openfile->current->lineno;
if (column < 1)
column = openfile->placewewant + 1;
}
for (openfile->current = openfile->fileage;
openfile->current != openfile->filebot && line > 1; line--)
openfile->current = openfile->current->next;
openfile->current_x = actual_x(openfile->current->data, column - 1);
openfile->placewewant = column - 1;
/* Put the top line of the edit window in range of the current line.
* If save_pos is TRUE, don't change the cursor position when doing
* it. */
edit_update(save_pos ? NONE : CENTER);
/* If allow_update is TRUE, update the screen. */
if (allow_update) {
edit_refresh();
display_main_list();
}
}
/* Set up the system variables for a search or replace. If use_answer
* is TRUE, only set backupstring to answer. Return -2 to run the
* opposite program (search -> replace, replace -> search), return -1 if
* the search should be canceled (due to Cancel, a blank search string,
* Go to Line, or a failed regcomp()), return 0 on success, and return 1
* on rerun calling program.
*
* replacing is TRUE if we call from do_replace(), and FALSE if called
* from do_search(). */
int search_init(bool replacing, bool use_answer)
{
int i = 0;
char *buf;
static char *backupstring = NULL;
/* The search string we'll be using. */
/* If backupstring doesn't exist, initialize it to "". */
if (backupstring == NULL)
backupstring = mallocstrcpy(NULL, "");
/* If use_answer is TRUE, set backupstring to answer and get out. */
if (use_answer) {
backupstring = mallocstrcpy(backupstring, answer);
return 0;
}
/* We display the search prompt below. If the user types a partial
* search string and then Replace or a toggle, we will return to
* do_search() or do_replace() and be called again. In that case,
* we should put the same search string back up. */
focusing = TRUE;
if (last_search[0] != '\0') {
char *disp = display_string(last_search, 0, COLS / 3, FALSE);
buf = charalloc(strlen(disp) + 7);
/* We use (COLS / 3) here because we need to see more on the line. */
sprintf(buf, " [%s%s]", disp,
(strlenpt(last_search) > COLS / 3) ? "..." : "");
free(disp);
} else
buf = mallocstrcpy(NULL, "");
/* This is now one simple call. It just does a lot. */
i = do_prompt(FALSE,
#ifndef DISABLE_TABCOMP
TRUE,
#endif
replacing ? MREPLACE : MWHEREIS, backupstring,
#ifndef DISABLE_HISTORIES
&search_history,
#endif
/* TRANSLATORS: This is the main search prompt. */
edit_refresh, "%s%s%s%s%s%s", _("Search"),
#ifndef NANO_TINY
/* TRANSLATORS: The next three strings are modifiers of the search prompt. */
ISSET(CASE_SENSITIVE) ? _(" [Case Sensitive]") :
#endif
"",
#ifdef HAVE_REGEX_H
ISSET(USE_REGEXP) ? _(" [Regexp]") :
#endif
"",
#ifndef NANO_TINY
ISSET(BACKWARDS_SEARCH) ? _(" [Backwards]") :
#endif
"", replacing ?
#ifndef NANO_TINY
/* TRANSLATORS: The next two strings are modifiers of the search prompt. */
openfile->mark_set ? _(" (to replace) in selection") :
#endif
_(" (to replace)") : "", buf);
fflush(stderr);
/* Release buf now that we don't need it anymore. */
free(buf);
free(backupstring);
backupstring = NULL;
/* Cancel any search, or just return with no previous search. */
if (i == -1 || (i < 0 && *last_search == '\0') || (!replacing &&
i == 0 && *answer == '\0')) {
statusbar(_("Cancelled"));
return -1;
} else {
functionptrtype func = func_from_key(&i);
if (i == -2 || i == 0 ) {
#ifdef HAVE_REGEX_H
/* Use last_search if answer is an empty string, or
* answer if it isn't. */
if (ISSET(USE_REGEXP) && !regexp_init((i == -2) ?
last_search : answer))
return -1;
#endif
;
#ifndef NANO_TINY
} else if (func == case_sens_void) {
TOGGLE(CASE_SENSITIVE);
backupstring = mallocstrcpy(backupstring, answer);
return 1;
} else if (func == backwards_void) {
TOGGLE(BACKWARDS_SEARCH);
backupstring = mallocstrcpy(backupstring, answer);
return 1;
#endif
#ifdef HAVE_REGEX_H
} else if (func == regexp_void) {
TOGGLE(USE_REGEXP);
backupstring = mallocstrcpy(backupstring, answer);
return 1;
#endif
} else if (func == do_replace || func == flip_replace_void) {
backupstring = mallocstrcpy(backupstring, answer);
return -2; /* Call the opposite search function. */
} else if (func == do_gotolinecolumn_void) {
do_gotolinecolumn(openfile->current->lineno,
openfile->placewewant + 1, TRUE, TRUE);
/* Put answer up on the statusbar and
* fall through. */
return 3;
} else {
return -1;
}
}
return 0;
}
/* Our main file browser function. path is the tilde-expanded path we
* start browsing from. */
std::string do_browser(std::string path, DIR *dir)
{
std::string retval;
bool old_const_update = ISSET(CONST_UPDATE);
std::string prev_dir;
/* The directory we were in before backing up to "..". */
std::string ans;
/* The last answer the user typed at the statusbar prompt. */
size_t old_selected;
/* The selected file we had before the current selected file. */
curs_set(0);
blank_statusbar();
bottombars(MBROWSER);
wnoutrefresh(bottomwin);
UNSET(CONST_UPDATE);
change_browser_directory:
/* We go here after we select a new directory. */
path = get_full_path(path);
assert(path.length() > 0 && path.back() == '/');
/* Get the file list, and set longest and width in the process. */
browser_init(path, dir);
/* Sort the file list. */
std::sort(filelist.begin(), filelist.end(), sort_directories);
/* If prev_dir isn't empty, select the directory saved in it, and then blow it away. */
if (prev_dir != "") {
browser_select_filename(prev_dir);
prev_dir = "";
/* Otherwise, select the first file or directory in the list. */
} else {
selected = 0;
}
old_selected = (size_t)-1;
titlebar(path);
Key *kbinput = nullptr;
while (true) {
struct stat st;
size_t fileline = selected / width;
/* The line number the selected file is on. */
std::string new_path;
/* The path we switch to at the "Go to Directory" prompt. */
if (kbinput) {
delete kbinput;
kbinput = nullptr;
}
/* Display the file list if we don't have a key, or if the
* selected file has changed, and set width in the process. */
if (old_selected != selected) {
browser_refresh();
}
old_selected = selected;
// Deal with the keyboard input
kbinput = new Key(get_kbinput(edit));
auto func = func_from_key(*kbinput);
if (func == total_refresh) {
total_redraw();
} else if (func == do_help_void) {
do_help_void();
curs_set(0);
/* Search for a filename. */
} else if (func == do_search) {
curs_set(1);
do_filesearch();
curs_set(0);
/* Search for another filename. */
} else if (func == do_research) {
do_fileresearch();
} else if (func == do_page_up) {
if (selected >= (editwinrows + fileline % editwinrows) * width) {
selected -= (editwinrows + fileline % editwinrows) * width;
} else {
selected = 0;
}
} else if (func == do_page_down) {
selected += (editwinrows - fileline % editwinrows) * width;
if (selected > filelist.size() - 1) {
selected = filelist.size() - 1;
}
} else if (func == do_first_file) {
selected = 0;
} else if (func == do_last_file) {
selected = filelist.size() - 1;
} else if (func == goto_dir_void) {
/* Go to a specific directory. */
curs_set(1);
std::shared_ptr<Key> key;
PromptResult i = do_prompt(true,
false,
MGOTODIR, key, ans.c_str(),
NULL,
browser_refresh, _("Go To Directory"));
curs_set(0);
bottombars(MBROWSER);
/* If the directory begins with a newline (i.e. an
* encoded null), treat it as though it's blank. */
if (i == PROMPT_ABORTED || i == PROMPT_BLANK_STRING || answer.front() == '\n') {
/* We canceled. Indicate that on the statusbar, and
* blank out ans, since we're done with it. */
statusbar(_("Cancelled"));
ans = "";
func = nullptr;
continue;
} else if (i != PROMPT_ENTER_PRESSED) {
/* Put back the "Go to Directory" key and save
* answer in ans, so that the file list is displayed
* again, the prompt is displayed again, and what we
* typed before at the prompt is displayed again. */
ans = answer;
func = goto_dir_void;
continue;
}
/* We have a directory. Blank out ans, since we're done with it. */
ans = "";
/* Convert newlines to nulls, just before we go to the directory. */
sunder(answer);
new_path = real_dir_from_tilde(answer);
if (new_path == "") {
new_path = path + answer;
}
dir = opendir(new_path);
if (dir == NULL) {
/* We can't open this directory for some reason. Complain. */
statusbar(_("Error reading %s: %s"), answer.c_str(), strerror(errno));
beep();
func = nullptr;
continue;
}
/* Start over again with the new path value. */
path = new_path;
goto change_browser_directory;
} else if (func == do_up_void) {
if (selected >= width) {
selected -= width;
}
} else if (func == do_left) {
if (selected > 0) {
selected--;
}
} else if (func == do_down_void) {
if (selected + width <= filelist.size() - 1) {
selected += width;
}
} else if (func == do_right) {
if (selected < filelist.size() - 1) {
selected++;
}
} else if (func == do_enter_void) {
/* We can't move up from "/". */
if (filelist[selected] == "/..") {
statusbar(_("Can't move up a directory"));
beep();
func = nullptr;
continue;
}
if (stat(filelist[selected], &st) == -1) {
/* We can't open this file for some reason. Complain. */
statusbar(_("Error reading %s: %s"), filelist[selected].c_str(), strerror(errno));
beep();
func = nullptr;
continue;
}
if (!S_ISDIR(st.st_mode)) {
/* We've successfully opened a file, we're done, so get out. */
retval = filelist[selected];
func = nullptr;
break;
} else if (tail(filelist[selected]) == "..") {
/* We've successfully opened the parent directory,
* save the current directory in prev_dir, so that
* we can easily return to it by hitting Enter. */
prev_dir = striponedir(filelist[selected]);
}
dir = opendir(filelist[selected].c_str());
if (dir == NULL) {
/* We can't open this directory for some reason. Complain. */
statusbar(_("Error reading %s: %s"), filelist[selected].c_str(), strerror(errno));
beep();
func = nullptr;
continue;
}
path = filelist[selected];
/* Start over again with the new path value. */
goto change_browser_directory;
} else if (func == do_exit) {
/* Exit from the file browser. */
break;
}
func = nullptr;
}
if (kbinput) {
delete kbinput;
}
titlebar(NULL);
edit_refresh();
curs_set(1);
if (old_const_update) {
SET(CONST_UPDATE);
}
filelist.clear();
return retval;
}