| /* $Id$ */ |
| /************************************************************************** |
| * files.c * |
| * * |
| * Copyright (C) 1999-2005 Chris Allegretta * |
| * This program is free software; you can redistribute it and/or modify * |
| * it under the terms of the GNU General Public License as published by * |
| * the Free Software Foundation; either version 2, or (at your option) * |
| * any later version. * |
| * * |
| * This program is distributed in the hope that it will be useful, but * |
| * WITHOUT ANY WARRANTY; without even the implied warranty of * |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * |
| * General Public License for more details. * |
| * * |
| * You should have received a copy of the GNU General Public License * |
| * along with this program; if not, write to the Free Software * |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * |
| * 02110-1301, USA. * |
| * * |
| **************************************************************************/ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <sys/wait.h> |
| #include <utime.h> |
| #include <fcntl.h> |
| #include <errno.h> |
| #include <ctype.h> |
| #include <pwd.h> |
| #include <assert.h> |
| #include "proto.h" |
| |
| static file_format fmt = NIX_FILE; |
| /* The format of the current file. */ |
| |
| /* What happens when there is no file to open? aiee! */ |
| void new_file(void) |
| { |
| fileage = make_new_node(NULL); |
| fileage->data = mallocstrcpy(NULL, ""); |
| filebot = fileage; |
| edittop = fileage; |
| current = fileage; |
| current_x = 0; |
| totlines = 1; |
| totsize = 0; |
| |
| #ifdef ENABLE_COLOR |
| update_color(); |
| if (!ISSET(NO_COLOR_SYNTAX)) |
| edit_refresh(); |
| #endif |
| } |
| |
| /* We make a new line of text from buf. buf is length len. If |
| * first_line_ins is TRUE, then we put the new line at the top of the |
| * file. Otherwise, we assume prevnode is the last line of the file, |
| * and put our line after prevnode. */ |
| filestruct *read_line(char *buf, filestruct *prevnode, bool |
| *first_line_ins, size_t len) |
| { |
| filestruct *fileptr = (filestruct *)nmalloc(sizeof(filestruct)); |
| |
| /* Convert nulls to newlines. len is the string's real length |
| * here. */ |
| unsunder(buf, len); |
| |
| assert(strlen(buf) == len); |
| |
| fileptr->data = mallocstrcpy(NULL, buf); |
| |
| #ifndef NANO_SMALL |
| /* If it's a DOS file ("\r\n"), and file conversion isn't disabled, |
| * strip the '\r' part from fileptr->data. */ |
| if (!ISSET(NO_CONVERT) && len > 0 && buf[len - 1] == '\r') |
| fileptr->data[len - 1] = '\0'; |
| #endif |
| |
| if (*first_line_ins == TRUE || fileage == NULL) { |
| /* Special case: We're inserting with the cursor on the first |
| * line. */ |
| fileptr->prev = NULL; |
| fileptr->next = fileage; |
| fileptr->lineno = 1; |
| if (*first_line_ins == TRUE) { |
| *first_line_ins = FALSE; |
| /* If we're inserting into the first line of the file, then |
| * we want to make sure that our edit buffer stays on the |
| * first line and that fileage stays up to date. */ |
| edittop = fileptr; |
| } else |
| filebot = fileptr; |
| fileage = fileptr; |
| } else { |
| assert(prevnode != NULL); |
| |
| fileptr->prev = prevnode; |
| fileptr->next = NULL; |
| fileptr->lineno = prevnode->lineno + 1; |
| prevnode->next = fileptr; |
| } |
| |
| return fileptr; |
| } |
| |
| /* Load a file into the edit buffer. This takes data from the file |
| * struct. */ |
| void load_file(void) |
| { |
| current = fileage; |
| |
| #ifdef ENABLE_MULTIBUFFER |
| /* Add a new entry to the open_files structure. */ |
| add_open_file(FALSE); |
| |
| /* Reinitialize the shortcut list. */ |
| shortcut_init(FALSE); |
| #endif |
| } |
| |
| void read_file(FILE *f, const char *filename) |
| { |
| size_t num_lines = 0; |
| /* The number of lines in the file. */ |
| size_t num_chars; |
| /* The number of characters in the file. */ |
| size_t len = 0; |
| /* The length of the current line of the file. */ |
| size_t i = 0; |
| /* The position in the current line of the file. */ |
| size_t bufx = MAX_BUF_SIZE; |
| /* The size of each chunk of the file that we read. */ |
| char input = '\0'; |
| /* The current input character. */ |
| char *buf; |
| /* The buffer where we store chunks of the file. */ |
| filestruct *fileptr = current; |
| /* The current line of the file. */ |
| bool first_line_ins = FALSE; |
| /* Whether we're inserting with the cursor on the first line. */ |
| int input_int; |
| /* The current value we read from the file, whether an input |
| * character or EOF. */ |
| #ifndef NANO_SMALL |
| int format = 0; |
| /* 0 = *nix, 1 = DOS, 2 = Mac, 3 = both DOS and Mac. */ |
| #endif |
| |
| buf = charalloc(bufx); |
| buf[0] = '\0'; |
| |
| if (current != NULL) { |
| if (current == fileage) |
| first_line_ins = TRUE; |
| else |
| fileptr = current->prev; |
| } |
| |
| /* For the assertion in read_line(), it must be true that if current |
| * is NULL, then so is fileage. */ |
| assert(current != NULL || fileage == NULL); |
| |
| #ifndef NANO_SMALL |
| /* We don't know which file format we have yet, so assume it's a |
| * *nix file for now. */ |
| fmt = NIX_FILE; |
| #endif |
| |
| /* Read the entire file into the file struct. */ |
| while ((input_int = getc(f)) != EOF) { |
| input = (char)input_int; |
| |
| /* If it's a *nix file ("\n") or a DOS file ("\r\n"), and file |
| * conversion isn't disabled, handle it! */ |
| if (input == '\n') { |
| #ifndef NANO_SMALL |
| /* If there's a '\r' before the '\n', set format to DOS if |
| * we currently think this is a *nix file, or to both if we |
| * currently think it's a Mac file. */ |
| if (!ISSET(NO_CONVERT) && i > 0 && buf[i - 1] == '\r' && |
| (format == 0 || format == 2)) |
| format++; |
| #endif |
| |
| /* Read in the line properly. */ |
| fileptr = read_line(buf, fileptr, &first_line_ins, len); |
| |
| /* Reset the line length in preparation for the next |
| * line. */ |
| len = 0; |
| |
| num_lines++; |
| buf[0] = '\0'; |
| i = 0; |
| #ifndef NANO_SMALL |
| /* If it's a Mac file ('\r' without '\n'), and file conversion |
| * isn't disabled, handle it! */ |
| } else if (!ISSET(NO_CONVERT) && i > 0 && buf[i - 1] == '\r') { |
| |
| /* If we currently think the file is a *nix file, set format |
| * to Mac. If we currently think the file is a DOS file, |
| * set format to both DOS and Mac. */ |
| if (format == 0 || format == 1) |
| format += 2; |
| |
| /* Read in the line properly. */ |
| fileptr = read_line(buf, fileptr, &first_line_ins, len); |
| |
| /* Reset the line length in preparation for the next line. |
| * Since we've already read in the next character, reset it |
| * to 1 instead of 0. */ |
| len = 1; |
| |
| num_lines++; |
| buf[0] = input; |
| buf[1] = '\0'; |
| i = 1; |
| #endif |
| } else { |
| /* Calculate the total length of the line. It might have |
| * nulls in it, so we can't just use strlen() here. */ |
| len++; |
| |
| /* Now we allocate a bigger buffer MAX_BUF_SIZE characters |
| * at a time. If we allocate a lot of space for one line, |
| * we may indeed have to use a buffer this big later on, so |
| * we don't decrease it at all. We do free it at the end, |
| * though. */ |
| if (i >= bufx - 1) { |
| bufx += MAX_BUF_SIZE; |
| buf = charealloc(buf, bufx); |
| } |
| |
| buf[i] = input; |
| buf[i + 1] = '\0'; |
| i++; |
| } |
| } |
| |
| /* Perhaps this could use some better handling. */ |
| if (ferror(f)) |
| nperror(filename); |
| fclose(f); |
| |
| #ifndef NANO_SMALL |
| /* If file conversion isn't disabled and the last character in this |
| * file is '\r', read it in properly as a Mac format line. */ |
| if (len == 0 && !ISSET(NO_CONVERT) && input == '\r') { |
| len = 1; |
| |
| buf[0] = input; |
| buf[1] = '\0'; |
| } |
| #endif |
| |
| /* Did we not get a newline and still have stuff to do? */ |
| if (len > 0) { |
| #ifndef NANO_SMALL |
| /* If file conversion isn't disabled and the last character in |
| * this file is '\r', set format to Mac if we currently think |
| * the file is a *nix file, or to both DOS and Mac if we |
| * currently think the file is a DOS file. */ |
| if (!ISSET(NO_CONVERT) && buf[len - 1] == '\r' && |
| (format == 0 || format == 1)) |
| format += 2; |
| #endif |
| |
| /* Read in the last line properly. */ |
| fileptr = read_line(buf, fileptr, &first_line_ins, len); |
| num_lines++; |
| } |
| |
| free(buf); |
| |
| /* If we didn't get a file and we don't already have one, make a new |
| * file. */ |
| if (fileptr == NULL) |
| new_file(); |
| |
| /* Did we try to insert a file of 0 bytes? */ |
| if (num_lines != 0) { |
| if (current != NULL) { |
| fileptr->next = current; |
| current->prev = fileptr; |
| renumber(current); |
| current_x = 0; |
| placewewant = 0; |
| } else if (fileptr->next == NULL) { |
| filebot = fileptr; |
| new_magicline(); |
| totsize--; |
| } |
| } |
| |
| get_totals(fileage, filebot, NULL, &num_chars); |
| totsize += num_chars; |
| |
| #ifndef NANO_SMALL |
| if (format == 3) |
| statusbar( |
| P_("Read %lu line (Converted from DOS and Mac format)", |
| "Read %lu lines (Converted from DOS and Mac format)", |
| (unsigned long)num_lines), (unsigned long)num_lines); |
| else if (format == 2) { |
| fmt = MAC_FILE; |
| statusbar(P_("Read %lu line (Converted from Mac format)", |
| "Read %lu lines (Converted from Mac format)", |
| (unsigned long)num_lines), (unsigned long)num_lines); |
| } else if (format == 1) { |
| fmt = DOS_FILE; |
| statusbar(P_("Read %lu line (Converted from DOS format)", |
| "Read %lu lines (Converted from DOS format)", |
| (unsigned long)num_lines), (unsigned long)num_lines); |
| } else |
| #endif |
| statusbar(P_("Read %lu line", "Read %lu lines", |
| (unsigned long)num_lines), (unsigned long)num_lines); |
| |
| totlines += num_lines; |
| } |
| |
| /* Open the file (and decide if it exists). If newfie is TRUE, display |
| * "New File" if the file is missing. Otherwise, say "[filename] not |
| * found". |
| * |
| * Return -2 if we say "New File". Otherwise, -1 if the file isn't |
| * opened, 0 otherwise. The file might still have an error while |
| * reading with a 0 return value. *f is set to the opened file. */ |
| int open_file(const char *filename, bool newfie, FILE **f) |
| { |
| int fd; |
| struct stat fileinfo; |
| |
| assert(f != NULL); |
| |
| if (filename == NULL || filename[0] == '\0' || |
| stat(filename, &fileinfo) == -1) { |
| if (newfie) { |
| statusbar(_("New File")); |
| return -2; |
| } |
| statusbar(_("\"%s\" not found"), filename); |
| return -1; |
| } else if (S_ISDIR(fileinfo.st_mode) || S_ISCHR(fileinfo.st_mode) || |
| S_ISBLK(fileinfo.st_mode)) { |
| /* Don't open character or block files. Sorry, /dev/sndstat! */ |
| statusbar(S_ISDIR(fileinfo.st_mode) ? _("\"%s\" is a directory") |
| : _("File \"%s\" is a device file"), filename); |
| return -1; |
| } else if ((fd = open(filename, O_RDONLY)) == -1) { |
| statusbar(_("Error reading %s: %s"), filename, strerror(errno)); |
| return -1; |
| } else { |
| /* File is A-OK. Open it in binary mode for our own end-of-line |
| * character munging. */ |
| *f = fdopen(fd, "rb"); |
| |
| if (*f == NULL) { |
| statusbar(_("Error reading %s: %s"), filename, |
| strerror(errno)); |
| close(fd); |
| } else |
| statusbar(_("Reading File")); |
| } |
| return 0; |
| } |
| |
| /* This function will return the name of the first available extension |
| * of a filename (starting with [name][suffix], then [name][suffix].1, |
| * etc.). Memory is allocated for the return value. If no writable |
| * extension exists, we return "". */ |
| char *get_next_filename(const char *name, const char *suffix) |
| { |
| unsigned long i = 0; |
| char *buf; |
| size_t namelen, suffixlen; |
| |
| assert(name != NULL && suffix != NULL); |
| |
| namelen = strlen(name); |
| suffixlen = strlen(suffix); |
| |
| buf = charalloc(namelen + suffixlen + digits(ULONG_MAX) + 2); |
| sprintf(buf, "%s%s", name, suffix); |
| |
| while (TRUE) { |
| struct stat fs; |
| |
| if (stat(buf, &fs) == -1) |
| return buf; |
| if (i == ULONG_MAX) |
| break; |
| |
| i++; |
| sprintf(buf + namelen + suffixlen, ".%lu", i); |
| } |
| |
| /* We get here only if there is no possible save file. Blank out |
| * the filename to indicate this. */ |
| null_at(&buf, 0); |
| |
| return buf; |
| } |
| |
| #ifndef NANO_SMALL |
| void execute_command(const char *command) |
| { |
| #ifdef ENABLE_MULTIBUFFER |
| if (ISSET(MULTIBUFFER)) { |
| /* Update the current entry in the open_files structure. */ |
| add_open_file(TRUE); |
| new_file(); |
| UNSET(MODIFIED); |
| UNSET(MARK_ISSET); |
| } |
| #endif /* ENABLE_MULTIBUFFER */ |
| open_pipe(command); |
| #ifdef ENABLE_MULTIBUFFER |
| /* Add this new entry to the open_files structure. */ |
| if (ISSET(MULTIBUFFER)) |
| load_file(); |
| #endif /* ENABLE_MULTIBUFFER */ |
| } |
| #endif /* !NANO_SMALL */ |
| |
| /* name is a file name to open. We make a new buffer if necessary, then |
| * open and read the file. */ |
| void load_buffer(const char *name) |
| { |
| bool new_buffer = (fileage == NULL |
| #ifdef ENABLE_MULTIBUFFER |
| || ISSET(MULTIBUFFER) |
| #endif |
| ); |
| /* new_buffer says whether we load into this buffer or a new |
| * one. If new_buffer is TRUE, we display "New File" if the |
| * file is not found, and if it is found we set filename and add |
| * a new open_files entry. */ |
| FILE *f; |
| int rc; |
| /* rc == -2 means that the statusbar displayed "New File". -1 |
| * means that the open failed. 0 means success. */ |
| |
| #ifndef DISABLE_OPERATINGDIR |
| if (check_operating_dir(name, FALSE)) { |
| statusbar(_("Can't insert file from outside of %s"), |
| operating_dir); |
| return; |
| } |
| #endif |
| |
| #ifdef ENABLE_MULTIBUFFER |
| /* Update the current entry in the open_files structure. */ |
| add_open_file(TRUE); |
| #endif |
| |
| rc = open_file(name, new_buffer, &f); |
| |
| #ifdef ENABLE_MULTIBUFFER |
| if (rc != -1 && ISSET(MULTIBUFFER)) { |
| UNSET(MODIFIED); |
| #ifndef NANO_SMALL |
| UNSET(MARK_ISSET); |
| #endif |
| } |
| #endif |
| |
| if (rc != -1 && new_buffer) { |
| filename = mallocstrcpy(filename, name); |
| new_file(); |
| } |
| |
| if (rc == 0) { |
| file_format fmt_save = fmt; |
| |
| read_file(f, filename); |
| |
| /* If we're not loading into a new buffer, preserve the file |
| * format. */ |
| if (!new_buffer) |
| fmt = fmt_save; |
| |
| #ifndef NANO_SMALL |
| stat(filename, &originalfilestat); |
| #endif |
| } |
| |
| /* Add this new entry to the open_files structure if we have |
| * multibuffer support, or to the main filestruct if we don't. */ |
| if (rc != -1 && new_buffer) |
| load_file(); |
| } |
| |
| void do_insertfile( |
| #ifndef NANO_SMALL |
| bool execute |
| #else |
| void |
| #endif |
| ) |
| { |
| int i; |
| const char *msg; |
| char *ans = mallocstrcpy(NULL, ""); |
| /* The last answer the user typed on the statusbar. */ |
| filestruct *edittop_save = edittop; |
| int current_y_save = current_y; |
| bool at_edittop = FALSE; |
| /* Whether we're at the top of the edit window. */ |
| |
| #ifndef DISABLE_WRAPPING |
| wrap_reset(); |
| #endif |
| |
| while (TRUE) { |
| #ifndef NANO_SMALL |
| if (execute) { |
| #ifdef ENABLE_MULTIBUFFER |
| if (ISSET(MULTIBUFFER)) |
| msg = N_("Command to execute in new buffer [from %s] "); |
| else |
| #endif |
| msg = N_("Command to execute [from %s] "); |
| } else { |
| #endif |
| #ifdef ENABLE_MULTIBUFFER |
| if (ISSET(MULTIBUFFER)) { |
| msg = N_("File to insert into new buffer [from %s] "); |
| } else |
| #endif |
| msg = N_("File to insert [from %s] "); |
| #ifndef NANO_SMALL |
| } |
| #endif |
| |
| i = statusq(TRUE, |
| #ifndef NANO_SMALL |
| execute ? extcmd_list : |
| #endif |
| insertfile_list, ans, |
| #ifndef NANO_SMALL |
| NULL, |
| #endif |
| _(msg), |
| #ifndef DISABLE_OPERATINGDIR |
| operating_dir != NULL && strcmp(operating_dir, ".") != 0 ? |
| operating_dir : |
| #endif |
| "./"); |
| |
| /* If we're in multibuffer mode and the filename or command is |
| * blank, open a new buffer instead of canceling. */ |
| if (i == -1 || (i == -2 |
| #ifdef ENABLE_MULTIBUFFER |
| && !ISSET(MULTIBUFFER) |
| #endif |
| )) { |
| statusbar(_("Cancelled")); |
| break; |
| } else { |
| size_t pww_save = placewewant; |
| |
| ans = mallocstrcpy(ans, answer); |
| |
| #ifndef NANO_SMALL |
| #ifdef ENABLE_MULTIBUFFER |
| if (i == TOGGLE_MULTIBUFFER_KEY) { |
| /* Don't allow toggling if we're in view mode. */ |
| if (!ISSET(VIEW_MODE)) |
| TOGGLE(MULTIBUFFER); |
| continue; |
| } else |
| #endif |
| if (i == NANO_TOOTHERINSERT_KEY) { |
| execute = !execute; |
| continue; |
| } |
| #ifndef DISABLE_BROWSER |
| else |
| #endif |
| #endif /* !NANO_SMALL */ |
| |
| #ifndef DISABLE_BROWSER |
| if (i == NANO_TOFILES_KEY) { |
| char *tmp = do_browse_from(answer); |
| |
| if (tmp == NULL) |
| continue; |
| |
| free(answer); |
| answer = tmp; |
| |
| /* We have a file now. Indicate this and get out of the |
| * statusbar prompt cleanly. */ |
| i = 0; |
| statusq_abort(); |
| } |
| #endif |
| |
| /* If we don't have a file yet, go back to the statusbar |
| * prompt. */ |
| if (i != 0 |
| #ifdef ENABLE_MULTIBUFFER |
| && (i != -2 || !ISSET(MULTIBUFFER)) |
| #endif |
| ) |
| continue; |
| |
| #ifdef ENABLE_MULTIBUFFER |
| if (!ISSET(MULTIBUFFER)) { |
| #endif |
| /* If we're not inserting into a new buffer, partition |
| * the filestruct so that it contains no text and hence |
| * looks like a new buffer, and keep track of whether |
| * the top of the partition is the top of the edit |
| * window. */ |
| filepart = partition_filestruct(current, current_x, |
| current, current_x); |
| at_edittop = (fileage == edittop); |
| #ifdef ENABLE_MULTIBUFFER |
| } |
| #endif |
| |
| #ifndef NANO_SMALL |
| if (execute) |
| execute_command(answer); |
| else { |
| #endif |
| answer = mallocstrassn(answer, |
| real_dir_from_tilde(answer)); |
| load_buffer(answer); |
| #ifndef NANO_SMALL |
| } |
| #endif |
| |
| #ifdef ENABLE_MULTIBUFFER |
| if (!ISSET(MULTIBUFFER)) |
| #endif |
| { |
| filestruct *top_save = fileage; |
| |
| /* If we didn't insert into a new buffer, and we were at |
| * the top of the edit window before, set the saved |
| * value of edittop to the new top of the edit window, |
| * and update the current y-coordinate to account for |
| * the number of lines inserted. */ |
| if (at_edittop) |
| edittop_save = fileage; |
| current_y += current_y_save; |
| |
| /* If we didn't insert into a new buffer, unpartition |
| * the filestruct so that it contains all the text |
| * again. Note that we've replaced the non-text |
| * originally in the partition with the text in the |
| * inserted file/executed command output. */ |
| unpartition_filestruct(&filepart); |
| |
| /* Renumber starting with the beginning line of the old |
| * partition. */ |
| renumber(top_save); |
| |
| /* Set edittop back to what it was before. */ |
| edittop = edittop_save; |
| } |
| |
| #ifdef ENABLE_MULTIBUFFER |
| if (ISSET(MULTIBUFFER)) { |
| /* Update the titlebar. */ |
| titlebar(NULL); |
| |
| /* Reinitialize the shortcut list. */ |
| shortcut_init(FALSE); |
| } else { |
| #endif |
| /* Mark the file as modified. */ |
| set_modified(); |
| |
| /* Restore the old place we want. */ |
| placewewant = pww_save; |
| #ifdef ENABLE_MULTIBUFFER |
| } |
| #endif |
| |
| /* Refresh the screen. */ |
| edit_refresh(); |
| |
| break; |
| } |
| } |
| |
| free(ans); |
| } |
| |
| void do_insertfile_void(void) |
| { |
| #ifdef ENABLE_MULTIBUFFER |
| if (ISSET(VIEW_MODE) && !ISSET(MULTIBUFFER)) |
| statusbar(_("Key illegal in non-multibuffer mode")); |
| else |
| #endif |
| do_insertfile( |
| #ifndef NANO_SMALL |
| FALSE |
| #endif |
| ); |
| |
| display_main_list(); |
| } |
| |
| #ifdef ENABLE_MULTIBUFFER |
| /* Create a new openfilestruct node. */ |
| openfilestruct *make_new_opennode(void) |
| { |
| openfilestruct *newnode = |
| (openfilestruct *)nmalloc(sizeof(openfilestruct)); |
| newnode->filename = NULL; |
| |
| return newnode; |
| } |
| |
| /* Splice a node into an existing openfilestruct. */ |
| void splice_opennode(openfilestruct *begin, openfilestruct *newnode, |
| openfilestruct *end) |
| { |
| assert(newnode != NULL && begin != NULL); |
| |
| newnode->next = end; |
| newnode->prev = begin; |
| begin->next = newnode; |
| if (end != NULL) |
| end->prev = newnode; |
| } |
| |
| /* Unlink a node from the rest of the openfilestruct, and delete it. */ |
| void unlink_opennode(openfilestruct *fileptr) |
| { |
| assert(fileptr != NULL && fileptr->prev != NULL && fileptr->next != NULL && fileptr != fileptr->prev && fileptr != fileptr->next); |
| |
| fileptr->prev->next = fileptr->next; |
| fileptr->next->prev = fileptr->prev; |
| delete_opennode(fileptr); |
| } |
| |
| /* Delete a node from the openfilestruct. */ |
| void delete_opennode(openfilestruct *fileptr) |
| { |
| assert(fileptr != NULL && fileptr->filename != NULL && fileptr->fileage != NULL); |
| |
| free(fileptr->filename); |
| free_filestruct(fileptr->fileage); |
| free(fileptr); |
| } |
| |
| #ifdef DEBUG |
| /* Deallocate all memory associated with this and later files, including |
| * the lines of text. */ |
| void free_openfilestruct(openfilestruct *src) |
| { |
| assert(src != NULL); |
| |
| while (src != src->next) { |
| src = src->next; |
| delete_opennode(src->prev); |
| } |
| delete_opennode(src); |
| } |
| #endif |
| |
| /* Add/update an entry to the open_files openfilestruct. If update is |
| * FALSE, a new entry is created; otherwise, the current entry is |
| * updated. */ |
| void add_open_file(bool update) |
| { |
| if (update && open_files == NULL) |
| return; |
| |
| /* If there are no entries in open_files, make the first one. */ |
| if (open_files == NULL) { |
| open_files = make_new_opennode(); |
| splice_opennode(open_files, open_files, open_files); |
| /* Otherwise, if we're not updating, make a new entry for |
| * open_files and splice it in after the current entry. */ |
| } else if (!update) { |
| splice_opennode(open_files, make_new_opennode(), |
| open_files->next); |
| open_files = open_files->next; |
| } |
| |
| /* Save the current filename. */ |
| open_files->filename = mallocstrcpy(open_files->filename, filename); |
| |
| #ifndef NANO_SMALL |
| /* Save the current file's stat. */ |
| open_files->originalfilestat = originalfilestat; |
| #endif |
| |
| /* Save the current file buffer. */ |
| open_files->fileage = fileage; |
| open_files->filebot = filebot; |
| |
| /* Save the current top of the edit window. */ |
| open_files->edittop = edittop; |
| |
| /* Save the current line. */ |
| open_files->current = current; |
| |
| /* Save the current cursor position. */ |
| open_files->current_x = current_x; |
| |
| /* Save the current place we want. */ |
| open_files->placewewant = placewewant; |
| |
| /* Save the current total number of lines. */ |
| open_files->totlines = totlines; |
| |
| /* Save the current total size. */ |
| open_files->totsize = totsize; |
| |
| /* Start with no flags saved. */ |
| open_files->flags = 0; |
| |
| /* Save the current modification status. */ |
| if (ISSET(MODIFIED)) |
| open_files->flags |= MODIFIED; |
| |
| #ifndef NANO_SMALL |
| /* Save the current marking status and mark, if applicable. */ |
| if (ISSET(MARK_ISSET)) { |
| open_files->flags |= MARK_ISSET; |
| open_files->mark_beginbuf = mark_beginbuf; |
| open_files->mark_beginx = mark_beginx; |
| } |
| |
| /* Save the current file format. */ |
| open_files->fmt = fmt; |
| #endif |
| |
| #ifdef DEBUG |
| fprintf(stderr, "filename is %s\n", open_files->filename); |
| #endif |
| } |
| |
| /* Read the current entry in the open_files structure and set up the |
| * currently open file buffer using that entry's information. */ |
| void load_open_file(void) |
| { |
| assert(open_files != NULL); |
| |
| /* Restore the current filename. */ |
| filename = mallocstrcpy(filename, open_files->filename); |
| |
| #ifndef NANO_SMALL |
| /* Restore the current file's stat. */ |
| originalfilestat = open_files->originalfilestat; |
| #endif |
| |
| /* Restore the current file buffer. */ |
| fileage = open_files->fileage; |
| filebot = open_files->filebot; |
| |
| /* Restore the current top of the edit window. */ |
| edittop = open_files->edittop; |
| |
| /* Restore the current line. */ |
| current = open_files->current; |
| |
| /* Restore the current cursor position. */ |
| current_x = open_files->current_x; |
| |
| /* Restore the current place we want. */ |
| placewewant = open_files->placewewant; |
| |
| /* Restore the current total number of lines. */ |
| totlines = open_files->totlines; |
| |
| /* Restore the current total size. */ |
| totsize = open_files->totsize; |
| |
| /* Restore the current modification status. */ |
| if (open_files->flags & MODIFIED) |
| SET(MODIFIED); |
| else |
| UNSET(MODIFIED); |
| |
| #ifndef NANO_SMALL |
| /* Restore the current marking status and mark, if applicable. */ |
| if (open_files->flags & MARK_ISSET) { |
| mark_beginbuf = open_files->mark_beginbuf; |
| mark_beginx = open_files->mark_beginx; |
| SET(MARK_ISSET); |
| } else |
| UNSET(MARK_ISSET); |
| |
| /* Restore the current file format. */ |
| fmt = open_files->fmt; |
| #endif |
| |
| #ifdef ENABLE_COLOR |
| update_color(); |
| #endif |
| edit_refresh(); |
| |
| /* Update the titlebar. */ |
| titlebar(NULL); |
| } |
| |
| /* Open either the next or previous file buffer. */ |
| void open_prevnext_file(bool next_file) |
| { |
| assert(open_files != NULL); |
| |
| add_open_file(TRUE); |
| |
| /* If only one file buffer is open, indicate it on the statusbar and |
| * get out. */ |
| if (open_files == open_files->next) { |
| statusbar(_("No more open file buffers")); |
| return; |
| } |
| |
| /* Switch to the next or previous file, depending on the value of |
| * next. */ |
| open_files = next_file ? open_files->next : open_files->prev; |
| |
| #ifdef DEBUG |
| fprintf(stderr, "filename is %s\n", open_files->filename); |
| #endif |
| |
| /* Load the file we switched to. */ |
| load_open_file(); |
| |
| /* And indicate the switch on the statusbar. */ |
| statusbar(_("Switched to %s"), |
| ((open_files->filename[0] == '\0') ? _("New Buffer") : |
| open_files->filename)); |
| |
| #ifdef DEBUG |
| dump_buffer(current); |
| #endif |
| } |
| |
| /* Open the previous entry in the open_files structure. This function |
| * is used by the shortcut list. */ |
| void open_prevfile_void(void) |
| { |
| open_prevnext_file(FALSE); |
| } |
| |
| /* Open the next entry in the open_files structure. This function is |
| * used by the shortcut list. */ |
| void open_nextfile_void(void) |
| { |
| open_prevnext_file(TRUE); |
| } |
| |
| /* Delete an entry from the open_files filestruct. After deletion of an |
| * entry, the next entry is opened. Return TRUE on success or FALSE if |
| * there are no more open file buffers. */ |
| bool close_open_file(void) |
| { |
| assert(open_files != NULL); |
| |
| /* If only one file is open, get out. */ |
| if (open_files == open_files->next) |
| return FALSE; |
| |
| /* Open the next file. */ |
| open_nextfile_void(); |
| |
| /* Close the file we had open before. */ |
| unlink_opennode(open_files->prev); |
| |
| /* Reinitialize the shortcut list. */ |
| shortcut_init(FALSE); |
| display_main_list(); |
| |
| return TRUE; |
| } |
| #endif /* ENABLE_MULTIBUFFER */ |
| |
| /* When passed "[relative path]" or "[relative path][filename]" in |
| * origpath, return "[full path]" or "[full path][filename]" on success, |
| * or NULL on error. Do this if the file doesn't exist but the relative |
| * path does, since the file could exist in memory but not yet on disk). |
| * Don't do this if the relative path doesn't exist, since we won't be |
| * able to go there. */ |
| char *get_full_path(const char *origpath) |
| { |
| char *d_here, *d_there = NULL; |
| |
| if (origpath == NULL) |
| return NULL; |
| |
| /* Get the current directory. */ |
| d_here = charalloc(PATH_MAX + 1); |
| d_here = getcwd(d_here, PATH_MAX + 1); |
| |
| if (d_here != NULL) { |
| const char *last_slash; |
| char *d_there_file = NULL; |
| bool path_only; |
| struct stat fileinfo; |
| |
| align(&d_here); |
| |
| /* If the current directory isn't "/", tack a slash onto the end |
| * of it. */ |
| if (strcmp(d_here, "/") != 0) { |
| d_here = charealloc(d_here, strlen(d_here) + 2); |
| strcat(d_here, "/"); |
| } |
| |
| d_there = real_dir_from_tilde(origpath); |
| |
| assert(d_there != NULL); |
| |
| /* Stat d_there. If stat() fails, assume that d_there refers to |
| * a new file that hasn't been saved to disk yet. Set path_only |
| * to TRUE if d_there refers to a directory, and FALSE if |
| * d_there refers to a file. */ |
| path_only = !stat(d_there, &fileinfo) && |
| S_ISDIR(fileinfo.st_mode); |
| |
| /* If path_only is TRUE, make sure d_there ends in a slash. */ |
| if (path_only) { |
| size_t d_there_len = strlen(d_there); |
| |
| if (d_there[d_there_len - 1] != '/') { |
| d_there = charealloc(d_there, d_there_len + 2); |
| strcat(d_there, "/"); |
| } |
| } |
| |
| /* Search for the last slash in d_there. */ |
| last_slash = strrchr(d_there, '/'); |
| |
| /* If we didn't find one, then make sure the answer is in the |
| * format "d_here/d_there". */ |
| if (last_slash == NULL) { |
| assert(!path_only); |
| |
| d_there_file = d_there; |
| d_there = d_here; |
| } else { |
| /* If path_only is FALSE, then save the filename portion of |
| * the answer, everything after the last slash, in |
| * d_there_file. */ |
| if (!path_only) |
| d_there_file = mallocstrcpy(NULL, last_slash + 1); |
| |
| /* And remove the filename portion of the answer from |
| * d_there. */ |
| null_at(&d_there, last_slash - d_there + 1); |
| |
| /* Go to the path specified in d_there. */ |
| if (chdir(d_there) == -1) { |
| free(d_there); |
| d_there = NULL; |
| } else { |
| /* Get the full path and save it in d_there. */ |
| free(d_there); |
| |
| d_there = charalloc(PATH_MAX + 1); |
| d_there = getcwd(d_there, PATH_MAX + 1); |
| |
| if (d_there != NULL) { |
| align(&d_there); |
| |
| if (strcmp(d_there, "/") != 0) { |
| /* Make sure d_there ends in a slash. */ |
| d_there = charealloc(d_there, |
| strlen(d_there) + 2); |
| strcat(d_there, "/"); |
| } |
| } else |
| /* If we couldn't get the full path, set path_only |
| * to TRUE so that we clean up correctly, free all |
| * allocated memory, and return NULL. */ |
| path_only = TRUE; |
| |
| /* Finally, go back to the path specified in d_here, |
| * where we were before. */ |
| chdir(d_here); |
| } |
| |
| /* Free d_here, since we're done using it. */ |
| free(d_here); |
| } |
| |
| /* At this point, if path_only is FALSE and d_there exists, |
| * d_there contains the path portion of the answer and |
| * d_there_file contains the filename portion of the answer. If |
| * this is the case, tack d_there_file onto the end of |
| * d_there, so that d_there contains the complete answer. */ |
| if (!path_only && d_there != NULL) { |
| d_there = charealloc(d_there, strlen(d_there) + |
| strlen(d_there_file) + 1); |
| strcat(d_there, d_there_file); |
| } |
| |
| /* Free d_there_file, since we're done using it. */ |
| free(d_there_file); |
| } |
| |
| return d_there; |
| } |
| |
| /* Return the full version of path, as returned by get_full_path(). On |
| * error, if path doesn't reference a directory, or if the directory |
| * isn't writable, return NULL. */ |
| char *check_writable_directory(const char *path) |
| { |
| char *full_path = get_full_path(path); |
| |
| /* If get_full_path() fails, return NULL. */ |
| if (full_path == NULL) |
| return NULL; |
| |
| /* If we can't write to path or path isn't a directory, return |
| * NULL. */ |
| if (access(full_path, W_OK) != 0 || |
| full_path[strlen(full_path) - 1] != '/') { |
| free(full_path); |
| return NULL; |
| } |
| |
| /* Otherwise, return the full path. */ |
| return full_path; |
| } |
| |
| /* This function calls mkstemp(($TMPDIR|P_tmpdir|/tmp/)"nano.XXXXXX"). |
| * On success, it returns the malloc()ed filename and corresponding FILE |
| * stream, opened in "r+b" mode. On error, it returns NULL for the |
| * filename and leaves the FILE stream unchanged. */ |
| char *safe_tempfile(FILE **f) |
| { |
| char *full_tempdir = NULL; |
| const char *tmpdir_env; |
| int fd; |
| mode_t original_umask = 0; |
| |
| assert(f != NULL); |
| |
| /* If $TMPDIR is set and non-empty, set tempdir to it, run it |
| * through get_full_path(), and save the result in full_tempdir. |
| * Otherwise, leave full_tempdir set to NULL. */ |
| tmpdir_env = getenv("TMPDIR"); |
| if (tmpdir_env != NULL && tmpdir_env[0] != '\0') |
| full_tempdir = check_writable_directory(tmpdir_env); |
| |
| /* If $TMPDIR is unset, empty, or not a writable directory, and |
| * full_tempdir is NULL, try P_tmpdir instead. */ |
| if (full_tempdir == NULL) |
| full_tempdir = check_writable_directory(P_tmpdir); |
| |
| /* if P_tmpdir is NULL, use /tmp. */ |
| if (full_tempdir == NULL) |
| full_tempdir = mallocstrcpy(NULL, "/tmp/"); |
| |
| full_tempdir = charealloc(full_tempdir, strlen(full_tempdir) + 12); |
| strcat(full_tempdir, "nano.XXXXXX"); |
| |
| original_umask = umask(0); |
| umask(S_IRWXG | S_IRWXO); |
| |
| fd = mkstemp(full_tempdir); |
| |
| if (fd != -1) |
| *f = fdopen(fd, "r+b"); |
| else { |
| free(full_tempdir); |
| full_tempdir = NULL; |
| } |
| |
| umask(original_umask); |
| |
| return full_tempdir; |
| } |
| |
| #ifndef DISABLE_OPERATINGDIR |
| /* Initialize full_operating_dir based on operating_dir. */ |
| void init_operating_dir(void) |
| { |
| assert(full_operating_dir == NULL); |
| |
| if (operating_dir == NULL) |
| return; |
| |
| full_operating_dir = get_full_path(operating_dir); |
| |
| /* If get_full_path() failed or the operating directory is |
| * inaccessible, unset operating_dir. */ |
| if (full_operating_dir == NULL || chdir(full_operating_dir) == -1) { |
| free(full_operating_dir); |
| full_operating_dir = NULL; |
| free(operating_dir); |
| operating_dir = NULL; |
| } |
| } |
| |
| /* Check to see if we're inside the operating directory. Return FALSE |
| * if we are, or TRUE otherwise. If allow_tabcomp is TRUE, allow |
| * incomplete names that would be matches for the operating directory, |
| * so that tab completion will work. */ |
| bool check_operating_dir(const char *currpath, bool allow_tabcomp) |
| { |
| /* The char *full_operating_dir is global for mem cleanup. It |
| * should have already been initialized by init_operating_dir(). |
| * Also, a relative operating directory path will only be handled |
| * properly if this is done. */ |
| |
| char *fullpath; |
| bool retval = FALSE; |
| const char *whereami1, *whereami2 = NULL; |
| |
| /* If no operating directory is set, don't bother doing anything. */ |
| if (operating_dir == NULL) |
| return FALSE; |
| |
| assert(full_operating_dir != NULL); |
| |
| fullpath = get_full_path(currpath); |
| |
| /* fullpath == NULL means some directory in the path doesn't exist |
| * or is unreadable. If allow_tabcomp is FALSE, then currpath is |
| * what the user typed somewhere. We don't want to report a |
| * non-existent directory as being outside the operating directory, |
| * so we return FALSE. If allow_tabcomp is TRUE, then currpath |
| * exists, but is not executable. So we say it isn't in the |
| * operating directory. */ |
| if (fullpath == NULL) |
| return allow_tabcomp; |
| |
| whereami1 = strstr(fullpath, full_operating_dir); |
| if (allow_tabcomp) |
| whereami2 = strstr(full_operating_dir, fullpath); |
| |
| /* If both searches failed, we're outside the operating directory. |
| * Otherwise, check the search results; if the full operating |
| * directory path is not at the beginning of the full current path |
| * (for normal usage) and vice versa (for tab completion, if we're |
| * allowing it), we're outside the operating directory. */ |
| if (whereami1 != fullpath && whereami2 != full_operating_dir) |
| retval = TRUE; |
| free(fullpath); |
| |
| /* Otherwise, we're still inside it. */ |
| return retval; |
| } |
| #endif |
| |
| #ifndef NANO_SMALL |
| void init_backup_dir(void) |
| { |
| char *full_backup_dir; |
| |
| if (backup_dir == NULL) |
| return; |
| |
| full_backup_dir = get_full_path(backup_dir); |
| |
| /* If get_full_path() failed or the backup directory is |
| * inaccessible, unset backup_dir. */ |
| if (full_backup_dir == NULL || |
| full_backup_dir[strlen(full_backup_dir) - 1] != '/') { |
| free(full_backup_dir); |
| free(backup_dir); |
| backup_dir = NULL; |
| } else { |
| free(backup_dir); |
| backup_dir = full_backup_dir; |
| } |
| } |
| #endif |
| |
| /* Read from inn, write to out. We assume inn is opened for reading, |
| * and out for writing. We return 0 on success, -1 on read error, -2 on |
| * write error. */ |
| int copy_file(FILE *inn, FILE *out) |
| { |
| char buf[BUFSIZ]; |
| size_t charsread; |
| int retval = 0; |
| |
| assert(inn != NULL && out != NULL); |
| |
| do { |
| charsread = fread(buf, sizeof(char), BUFSIZ, inn); |
| if (charsread == 0 && ferror(inn)) { |
| retval = -1; |
| break; |
| } |
| if (fwrite(buf, sizeof(char), charsread, out) < charsread) { |
| retval = -2; |
| break; |
| } |
| } while (charsread > 0); |
| |
| if (fclose(inn) == EOF) |
| retval = -1; |
| if (fclose(out) == EOF) |
| retval = -2; |
| |
| return retval; |
| } |
| |
| /* Write a file out. If f_open isn't NULL, we assume that it is a |
| * stream associated with the file, and we don't try to open it |
| * ourselves. If tmp is TRUE, we set the umask to disallow anyone else |
| * from accessing the file, we don't set the global variable filename to |
| * its name, and we don't print out how many lines we wrote on the |
| * statusbar. |
| * |
| * tmp means we are writing a temporary file in a secure fashion. We |
| * use it when spell checking or dumping the file on an error. |
| * |
| * append == 1 means we are appending instead of overwriting. |
| * append == 2 means we are prepending instead of overwriting. |
| * |
| * nonamechange means don't change the current filename. It is ignored |
| * if tmp is FALSE or if we're appending/prepending. |
| * |
| * Return 0 on success or -1 on error. */ |
| int write_file(const char *name, FILE *f_open, bool tmp, int append, |
| bool nonamechange) |
| { |
| int retval = -1; |
| /* Instead of returning in this function, you should always |
| * merely set retval and then goto cleanup_and_exit. */ |
| size_t lineswritten = 0; |
| const filestruct *fileptr = fileage; |
| int fd; |
| /* The file descriptor we use. */ |
| mode_t original_umask = 0; |
| /* Our umask, from when nano started. */ |
| bool realexists; |
| /* The result of stat(). TRUE if the file exists, FALSE |
| * otherwise. If name is a link that points nowhere, realexists |
| * is FALSE. */ |
| struct stat st; |
| /* The status fields filled in by stat(). */ |
| bool anyexists; |
| /* The result of lstat(). Same as realexists unless name is a |
| * link. */ |
| struct stat lst; |
| /* The status fields filled in by lstat(). */ |
| char *realname; |
| /* name after tilde expansion. */ |
| FILE *f = NULL; |
| /* The actual file, realname, we are writing to. */ |
| char *tempname = NULL; |
| /* The temp file name we write to on prepend. */ |
| |
| assert(name != NULL); |
| |
| if (name[0] == '\0') |
| return -1; |
| |
| if (f_open != NULL) |
| f = f_open; |
| |
| if (!tmp) |
| titlebar(NULL); |
| |
| realname = real_dir_from_tilde(name); |
| |
| #ifndef DISABLE_OPERATINGDIR |
| /* If we're writing a temporary file, we're probably going outside |
| * the operating directory, so skip the operating directory test. */ |
| if (!tmp && check_operating_dir(realname, FALSE)) { |
| statusbar(_("Can't write outside of %s"), operating_dir); |
| goto cleanup_and_exit; |
| } |
| #endif |
| |
| anyexists = (lstat(realname, &lst) != -1); |
| |
| /* If the temp file exists and isn't already open, give up. */ |
| if (tmp && anyexists && f_open == NULL) |
| goto cleanup_and_exit; |
| |
| /* If NOFOLLOW_SYMLINKS is set, it doesn't make sense to prepend or |
| * append to a symlink. Here we warn about the contradiction. */ |
| if (ISSET(NOFOLLOW_SYMLINKS) && anyexists && S_ISLNK(lst.st_mode)) { |
| statusbar( |
| _("Cannot prepend or append to a symlink with --nofollow set")); |
| goto cleanup_and_exit; |
| } |
| |
| /* Save the state of file at the end of the symlink (if there is |
| * one). */ |
| realexists = (stat(realname, &st) != -1); |
| |
| #ifndef NANO_SMALL |
| /* We backup only if the backup toggle is set, the file isn't |
| * temporary, and the file already exists. Furthermore, if we |
| * aren't appending, prepending, or writing a selection, we backup |
| * only if the file has not been modified by someone else since nano |
| * opened it. */ |
| if (ISSET(BACKUP_FILE) && !tmp && realexists && |
| (append != 0 || ISSET(MARK_ISSET) || |
| originalfilestat.st_mtime == st.st_mtime)) { |
| FILE *backup_file; |
| char *backupname; |
| struct utimbuf filetime; |
| int copy_status; |
| |
| /* Save the original file's access and modification times. */ |
| filetime.actime = originalfilestat.st_atime; |
| filetime.modtime = originalfilestat.st_mtime; |
| |
| if (f_open == NULL) { |
| /* Open the original file to copy to the backup. */ |
| f = fopen(realname, "rb"); |
| |
| if (f == NULL) { |
| statusbar(_("Error reading %s: %s"), realname, |
| strerror(errno)); |
| goto cleanup_and_exit; |
| } |
| } |
| |
| /* If backup_dir is set, we set backupname to |
| * backup_dir/backupname~[.number], where backupname is the |
| * canonicalized absolute pathname of realname with every '/' |
| * replaced with a '!'. This means that /home/foo/file is |
| * backed up in backup_dir/!home!foo!file~[.number]. */ |
| if (backup_dir != NULL) { |
| char *backuptemp = get_full_path(realname); |
| |
| if (backuptemp == NULL) |
| /* If get_full_path() failed, we don't have a |
| * canonicalized absolute pathname, so just use the |
| * filename portion of the pathname. We use tail() so |
| * that e.g. ../backupname will be backed up in |
| * backupdir/backupname~ instead of |
| * backupdir/../backupname~. */ |
| backuptemp = mallocstrcpy(NULL, tail(realname)); |
| else { |
| size_t i = 0; |
| |
| for (; backuptemp[i] != '\0'; i++) { |
| if (backuptemp[i] == '/') |
| backuptemp[i] = '!'; |
| } |
| } |
| |
| backupname = charalloc(strlen(backup_dir) + |
| strlen(backuptemp) + 1); |
| sprintf(backupname, "%s%s", backup_dir, backuptemp); |
| free(backuptemp); |
| backuptemp = get_next_filename(backupname, "~"); |
| if (backuptemp[0] == '\0') { |
| statusbar(_("Error writing %s: %s"), backupname, |
| _("Too many backup files?")); |
| free(backuptemp); |
| free(backupname); |
| fclose(f); |
| goto cleanup_and_exit; |
| } else { |
| free(backupname); |
| backupname = backuptemp; |
| } |
| } else { |
| backupname = charalloc(strlen(realname) + 2); |
| sprintf(backupname, "%s~", realname); |
| } |
| |
| /* Open the destination backup file. Before we write to it, we |
| * set its permissions, so no unauthorized person can read it as |
| * we write. */ |
| backup_file = fopen(backupname, "wb"); |
| |
| if (backup_file == NULL || |
| chmod(backupname, originalfilestat.st_mode) == -1) { |
| statusbar(_("Error writing %s: %s"), backupname, |
| strerror(errno)); |
| free(backupname); |
| if (backup_file != NULL) |
| fclose(backup_file); |
| fclose(f); |
| goto cleanup_and_exit; |
| } |
| |
| #ifdef DEBUG |
| fprintf(stderr, "Backing up %s to %s\n", realname, backupname); |
| #endif |
| |
| /* Copy the file. */ |
| copy_status = copy_file(f, backup_file); |
| |
| /* And set metadata. */ |
| if (copy_status != 0 || |
| chown(backupname, originalfilestat.st_uid, |
| originalfilestat.st_gid) == -1 || |
| utime(backupname, &filetime) == -1) { |
| free(backupname); |
| if (copy_status == -1) |
| statusbar(_("Error reading %s: %s"), realname, |
| strerror(errno)); |
| else |
| statusbar(_("Error writing %s: %s"), backupname, |
| strerror(errno)); |
| goto cleanup_and_exit; |
| } |
| |
| free(backupname); |
| } |
| #endif /* !NANO_SMALL */ |
| |
| /* If NOFOLLOW_SYMLINKS is set and the file is a link, we aren't |
| * doing prepend or append. So we delete the link first, and just |
| * overwrite. */ |
| if (ISSET(NOFOLLOW_SYMLINKS) && anyexists && S_ISLNK(lst.st_mode) && |
| unlink(realname) == -1) { |
| statusbar(_("Error writing %s: %s"), realname, strerror(errno)); |
| goto cleanup_and_exit; |
| } |
| |
| if (f_open == NULL) { |
| original_umask = umask(0); |
| |
| /* If we create a temp file, we don't let anyone else access it. |
| * We create a temp file if tmp is TRUE. */ |
| if (tmp) |
| umask(S_IRWXG | S_IRWXO); |
| else |
| umask(original_umask); |
| } |
| |
| /* If we're prepending, copy the file to a temp file. */ |
| if (append == 2) { |
| int fd_source; |
| FILE *f_source = NULL; |
| |
| tempname = safe_tempfile(&f); |
| |
| if (tempname == NULL) { |
| statusbar(_("Prepending to %s failed: %s"), realname, |
| strerror(errno)); |
| goto cleanup_and_exit; |
| } |
| |
| if (f_open == NULL) { |
| fd_source = open(realname, O_RDONLY | O_CREAT); |
| |
| if (fd_source != -1) { |
| f_source = fdopen(fd_source, "rb"); |
| if (f_source == NULL) { |
| statusbar(_("Error reading %s: %s"), realname, |
| strerror(errno)); |
| close(fd_source); |
| fclose(f); |
| unlink(tempname); |
| goto cleanup_and_exit; |
| } |
| } |
| } |
| |
| if (copy_file(f_source, f) != 0) { |
| statusbar(_("Error writing %s: %s"), tempname, |
| strerror(errno)); |
| unlink(tempname); |
| goto cleanup_and_exit; |
| } |
| } |
| |
| if (f_open == NULL) { |
| /* Now open the file in place. Use O_EXCL if tmp is TRUE. This |
| * is copied from joe, because wiggy says so *shrug*. */ |
| fd = open(realname, O_WRONLY | O_CREAT | |
| ((append == 1) ? O_APPEND : (tmp ? O_EXCL : O_TRUNC)), |
| S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | |
| S_IWOTH); |
| |
| /* Set the umask back to the user's original value. */ |
| umask(original_umask); |
| |
| /* If we couldn't open the file, give up. */ |
| if (fd == -1) { |
| statusbar(_("Error writing %s: %s"), realname, |
| strerror(errno)); |
| |
| /* tempname has been set only if we're prepending. */ |
| if (tempname != NULL) |
| unlink(tempname); |
| goto cleanup_and_exit; |
| } |
| |
| f = fdopen(fd, (append == 1) ? "ab" : "wb"); |
| |
| if (f == NULL) { |
| statusbar(_("Error writing %s: %s"), realname, |
| strerror(errno)); |
| close(fd); |
| goto cleanup_and_exit; |
| } |
| } |
| |
| /* There might not be a magicline. There won't be when writing out |
| * a selection. */ |
| assert(fileage != NULL && filebot != NULL); |
| |
| while (fileptr != filebot) { |
| size_t data_len = strlen(fileptr->data), size; |
| |
| /* Newlines to nulls, just before we write to disk. */ |
| sunder(fileptr->data); |
| |
| size = fwrite(fileptr->data, sizeof(char), data_len, f); |
| |
| /* Nulls to newlines; data_len is the string's real length. */ |
| unsunder(fileptr->data, data_len); |
| |
| if (size < data_len) { |
| statusbar(_("Error writing %s: %s"), realname, |
| strerror(errno)); |
| fclose(f); |
| goto cleanup_and_exit; |
| } |
| |
| #ifndef NANO_SMALL |
| if (fmt == DOS_FILE || fmt == MAC_FILE) { |
| if (putc('\r', f) == EOF) { |
| statusbar(_("Error writing %s: %s"), realname, |
| strerror(errno)); |
| fclose(f); |
| goto cleanup_and_exit; |
| } |
| } |
| |
| if (fmt != MAC_FILE) { |
| #endif |
| if (putc('\n', f) == EOF) { |
| statusbar(_("Error writing %s: %s"), realname, |
| strerror(errno)); |
| fclose(f); |
| goto cleanup_and_exit; |
| } |
| #ifndef NANO_SMALL |
| } |
| #endif |
| |
| fileptr = fileptr->next; |
| lineswritten++; |
| } |
| |
| /* If we're prepending, open the temp file, and append it to f. */ |
| if (append == 2) { |
| int fd_source; |
| FILE *f_source = NULL; |
| |
| fd_source = open(tempname, O_RDONLY | O_CREAT); |
| |
| if (fd_source != -1) { |
| f_source = fdopen(fd_source, "rb"); |
| if (f_source == NULL) |
| close(fd_source); |
| } |
| |
| if (f_source == NULL) { |
| statusbar(_("Error reading %s: %s"), tempname, |
| strerror(errno)); |
| fclose(f); |
| goto cleanup_and_exit; |
| } |
| |
| if (copy_file(f_source, f) == -1 || unlink(tempname) == -1) { |
| statusbar(_("Error writing %s: %s"), realname, |
| strerror(errno)); |
| goto cleanup_and_exit; |
| } |
| } else if (fclose(f) == EOF) { |
| statusbar(_("Error writing %s: %s"), realname, strerror(errno)); |
| unlink(tempname); |
| goto cleanup_and_exit; |
| } |
| |
| if (!tmp && append == 0) { |
| if (!nonamechange) { |
| filename = mallocstrcpy(filename, realname); |
| #ifdef ENABLE_COLOR |
| update_color(); |
| if (!ISSET(NO_COLOR_SYNTAX)) |
| edit_refresh(); |
| #endif |
| } |
| |
| #ifndef NANO_SMALL |
| /* Update originalfilestat to reference the file as it is now. */ |
| stat(filename, &originalfilestat); |
| #endif |
| statusbar(P_("Wrote %lu line", "Wrote %lu lines", |
| (unsigned long)lineswritten), |
| (unsigned long)lineswritten); |
| UNSET(MODIFIED); |
| titlebar(NULL); |
| } |
| |
| retval = 0; |
| |
| cleanup_and_exit: |
| free(realname); |
| free(tempname); |
| |
| return retval; |
| } |
| |
| #ifndef NANO_SMALL |
| /* Write a marked selection from a file out. First, set fileage and |
| * filebot as the top and bottom of the mark, respectively. Then call |
| * write_file() with the values of name, f_open, temp, and append, and |
| * with nonamechange set to TRUE so that we don't change the current |
| * filename. Finally, set fileage and filebot back to their old values |
| * and return. */ |
| int write_marked(const char *name, FILE *f_open, bool tmp, int append) |
| { |
| int retval = -1; |
| bool old_modified = ISSET(MODIFIED); |
| /* write_file() unsets the MODIFIED flag. */ |
| bool added_magicline; |
| /* Whether we added a magicline after filebot. */ |
| filestruct *top, *bot; |
| size_t top_x, bot_x; |
| |
| /* Partition the filestruct so that it contains only the marked |
| * text. */ |
| mark_order((const filestruct **)&top, &top_x, |
| (const filestruct **)&bot, &bot_x, NULL); |
| filepart = partition_filestruct(top, top_x, bot, bot_x); |
| |
| /* If the line at filebot is blank, treat it as the magicline and |
| * hence the end of the file. Otherwise, add a magicline and treat |
| * it as the end of the file. */ |
| added_magicline = (filebot->data[0] != '\0'); |
| if (added_magicline) |
| new_magicline(); |
| |
| retval = write_file(name, f_open, tmp, append, TRUE); |
| |
| /* If we added a magicline, remove it now. */ |
| if (added_magicline) |
| remove_magicline(); |
| |
| /* Unpartition the filestruct so that it contains all the text |
| * again. */ |
| unpartition_filestruct(&filepart); |
| |
| if (old_modified) |
| set_modified(); |
| |
| return retval; |
| } |
| #endif /* !NANO_SMALL */ |
| |
| int do_writeout(bool exiting) |
| { |
| int i; |
| int retval = 0, append = 0; |
| char *ans; |
| /* The last answer the user typed on the statusbar. */ |
| #ifdef NANO_EXTRA |
| static bool did_cred = FALSE; |
| #endif |
| |
| currshortcut = writefile_list; |
| |
| if (exiting && filename[0] != '\0' && ISSET(TEMP_FILE)) { |
| retval = write_file(filename, NULL, FALSE, 0, FALSE); |
| |
| /* Write succeeded. */ |
| if (retval == 0) |
| return retval; |
| } |
| |
| #ifndef NANO_SMALL |
| if (ISSET(MARK_ISSET) && !exiting) |
| ans = mallocstrcpy(NULL, ""); |
| else |
| #endif |
| ans = mallocstrcpy(NULL, filename); |
| |
| while (TRUE) { |
| const char *msg; |
| #ifndef NANO_SMALL |
| const char *formatstr, *backupstr; |
| |
| if (fmt == DOS_FILE) |
| formatstr = N_(" [DOS Format]"); |
| else if (fmt == MAC_FILE) |
| formatstr = N_(" [Mac Format]"); |
| else |
| formatstr = ""; |
| |
| if (ISSET(BACKUP_FILE)) |
| backupstr = N_(" [Backup]"); |
| else |
| backupstr = ""; |
| |
| /* Be nice to the translation folks. */ |
| if (ISSET(MARK_ISSET) && !exiting) { |
| if (append == 2) |
| msg = N_("Prepend Selection to File"); |
| else if (append == 1) |
| msg = N_("Append Selection to File"); |
| else |
| msg = N_("Write Selection to File"); |
| } else |
| #endif /* !NANO_SMALL */ |
| if (append == 2) |
| msg = N_("File Name to Prepend to"); |
| else if (append == 1) |
| msg = N_("File Name to Append to"); |
| else |
| msg = N_("File Name to Write"); |
| |
| /* If we're using restricted mode, the filename isn't blank, |
| * and we're at the "Write File" prompt, disable tab |
| * completion. */ |
| i = statusq(!ISSET(RESTRICTED) || filename[0] == '\0', |
| writefile_list, ans, |
| #ifndef NANO_SMALL |
| NULL, "%s%s%s", _(msg), formatstr, backupstr |
| #else |
| "%s", _(msg) |
| #endif |
| ); |
| |
| if (i < 0) { |
| statusbar(_("Cancelled")); |
| retval = -1; |
| break; |
| } else { |
| ans = mallocstrcpy(ans, answer); |
| |
| #ifndef DISABLE_BROWSER |
| if (i == NANO_TOFILES_KEY) { |
| char *tmp = do_browse_from(answer); |
| |
| currshortcut = writefile_list; |
| |
| if (tmp == NULL) |
| continue; |
| free(answer); |
| answer = tmp; |
| |
| /* We have a file now. Get out of the statusbar prompt |
| * cleanly. */ |
| statusq_abort(); |
| } else |
| #endif /* !DISABLE_BROWSER */ |
| #ifndef NANO_SMALL |
| if (i == TOGGLE_DOS_KEY) { |
| fmt = (fmt == DOS_FILE) ? NIX_FILE : DOS_FILE; |
| continue; |
| } else if (i == TOGGLE_MAC_KEY) { |
| fmt = (fmt == MAC_FILE) ? NIX_FILE : MAC_FILE; |
| continue; |
| } else if (i == TOGGLE_BACKUP_KEY) { |
| TOGGLE(BACKUP_FILE); |
| continue; |
| } else |
| #endif /* !NANO_SMALL */ |
| if (i == NANO_PREPEND_KEY) { |
| append = (append == 2) ? 0 : 2; |
| continue; |
| } else if (i == NANO_APPEND_KEY) { |
| append = (append == 1) ? 0 : 1; |
| continue; |
| } |
| |
| #ifdef DEBUG |
| fprintf(stderr, "filename is %s\n", answer); |
| #endif |
| |
| #ifdef NANO_EXTRA |
| if (exiting && !ISSET(TEMP_FILE) && |
| strcasecmp(answer, "zzy") == 0 && !did_cred) { |
| do_credits(); |
| did_cred = TRUE; |
| retval = -1; |
| break; |
| } |
| #endif |
| if (append == 0 && strcmp(answer, filename) != 0) { |
| struct stat st; |
| |
| if (!stat(answer, &st)) { |
| i = do_yesno(FALSE, _("File exists, OVERWRITE ? ")); |
| if (i == 0 || i == -1) |
| continue; |
| /* If we're using restricted mode, we aren't allowed to |
| * change the name of a file once it has one because |
| * that would allow reading from or writing to files not |
| * specified on the command line. In this case, don't |
| * bother showing the "Different Name" prompt. */ |
| } else if (!ISSET(RESTRICTED) && filename[0] != '\0' |
| #ifndef NANO_SMALL |
| && (exiting || !ISSET(MARK_ISSET)) |
| #endif |
| ) { |
| i = do_yesno(FALSE, |
| _("Save file under DIFFERENT NAME ? ")); |
| if (i == 0 || i == -1) |
| continue; |
| } |
| } |
| |
| #ifndef NANO_SMALL |
| /* Here's where we allow the selected text to be written to |
| * a separate file. If we're using restricted mode, this is |
| * disabled since it allows reading from or writing to files |
| * not specified on the command line. */ |
| if (!ISSET(RESTRICTED) && !exiting && ISSET(MARK_ISSET)) |
| retval = write_marked(answer, NULL, FALSE, append); |
| else |
| #endif /* !NANO_SMALL */ |
| retval = write_file(answer, NULL, FALSE, append, FALSE); |
| |
| #ifdef ENABLE_MULTIBUFFER |
| /* If we're not about to exit, update the current entry in |
| * the open_files structure. */ |
| if (!exiting) |
| add_open_file(TRUE); |
| #endif |
| |
| break; |
| } |
| } /* while (TRUE) */ |
| |
| free(ans); |
| |
| return retval; |
| } |
| |
| void do_writeout_void(void) |
| { |
| do_writeout(FALSE); |
| display_main_list(); |
| } |
| |
| /* Return a malloc()ed string containing the actual directory, used to |
| * convert ~user/ and ~/ notation. */ |
| char *real_dir_from_tilde(const char *buf) |
| { |
| char *dirtmp = NULL; |
| |
| if (buf == NULL) |
| return NULL; |
| |
| if (buf[0] == '~') { |
| size_t i; |
| const char *tilde_dir; |
| |
| /* Figure out how much of the str we need to compare. */ |
| for (i = 1; buf[i] != '/' && buf[i] != '\0'; i++) |
| ; |
| |
| /* Get the home directory. */ |
| if (i == 1) { |
| get_homedir(); |
| tilde_dir = homedir; |
| } else { |
| const struct passwd *userdata; |
| |
| do { |
| userdata = getpwent(); |
| } while (userdata != NULL && |
| strncmp(userdata->pw_name, buf + 1, i - 1) != 0); |
| endpwent(); |
| tilde_dir = userdata->pw_dir; |
| } |
| |
| if (tilde_dir != NULL) { |
| dirtmp = charalloc(strlen(tilde_dir) + strlen(buf + i) + 1); |
| sprintf(dirtmp, "%s%s", tilde_dir, buf + i); |
| } |
| } |
| |
| /* Set a default value for dirtmp, in case the user's home directory |
| * isn't found. */ |
| if (dirtmp == NULL) |
| dirtmp = mallocstrcpy(NULL, buf); |
| |
| return dirtmp; |
| } |
| |
| #if !defined(DISABLE_TABCOMP) || !defined(DISABLE_BROWSER) |
| /* Our sort routine for file listings. Sort alphabetically and |
| * case-insensitively, and sort directories before filenames. */ |
| int diralphasort(const void *va, const void *vb) |
| { |
| struct stat fileinfo; |
| const char *a = *(const char *const *)va; |
| const char *b = *(const char *const *)vb; |
| bool aisdir = stat(a, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode); |
| bool bisdir = stat(b, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode); |
| |
| if (aisdir && !bisdir) |
| return -1; |
| if (!aisdir && bisdir) |
| return 1; |
| |
| return strcasecmp(a, b); |
| } |
| |
| /* Free the memory allocated for array, which should contain len |
| * elements. */ |
| void free_chararray(char **array, size_t len) |
| { |
| for (; len > 0; len--) |
| free(array[len - 1]); |
| free(array); |
| } |
| #endif |
| |
| #ifndef DISABLE_TABCOMP |
| /* Is the given file a directory? */ |
| int is_dir(const char *buf) |
| { |
| char *dirptr = real_dir_from_tilde(buf); |
| struct stat fileinfo; |
| |
| int ret = (stat(dirptr, &fileinfo) != -1 && |
| S_ISDIR(fileinfo.st_mode)); |
| |
| assert(buf != NULL && dirptr != buf); |
| |
| free(dirptr); |
| |
| return ret; |
| } |
| |
| /* These functions (username_tab_completion(), cwd_tab_completion(), and |
| * input_tab()) were taken from busybox 0.46 (cmdedit.c). Here is the |
| * notice from that file: |
| * |
| * Termios command line History and Editting, originally |
| * intended for NetBSD sh (ash) |
| * Copyright (c) 1999 |
| * Main code: Adam Rogoyski <rogoyski@cs.utexas.edu> |
| * Etc: Dave Cinege <dcinege@psychosis.com> |
| * Majorly adjusted/re-written for busybox: |
| * Erik Andersen <andersee@debian.org> |
| * |
| * You may use this code as you wish, so long as the original author(s) |
| * are attributed in any redistributions of the source code. |
| * This code is 'as is' with no warranty. |
| * This code may safely be consumed by a BSD or GPL license. */ |
| |
| /* We consider the first buflen characters of buf for ~username tab |
| * completion. */ |
| char **username_tab_completion(const char *buf, size_t *num_matches, |
| size_t buflen) |
| { |
| char **matches = NULL; |
| const struct passwd *userdata; |
| |
| assert(buf != NULL && num_matches != NULL && buflen > 0); |
| |
| *num_matches = 0; |
| |
| while ((userdata = getpwent()) != NULL) { |
| if (strncmp(userdata->pw_name, buf + 1, buflen - 1) == 0) { |
| /* Cool, found a match. Add it to the list. This makes a |
| * lot more sense to me (Chris) this way... */ |
| |
| #ifndef DISABLE_OPERATINGDIR |
| /* ...unless the match exists outside the operating |
| * directory, in which case just go to the next match. */ |
| if (check_operating_dir(userdata->pw_dir, TRUE)) |
| continue; |
| #endif |
| |
| matches = (char **)nrealloc(matches, |
| (*num_matches + 1) * sizeof(char *)); |
| matches[*num_matches] = |
| charalloc(strlen(userdata->pw_name) + 2); |
| sprintf(matches[*num_matches], "~%s", userdata->pw_name); |
| ++(*num_matches); |
| } |
| } |
| endpwent(); |
| |
| return matches; |
| } |
| |
| /* This was originally called exe_n_cwd_tab_completion(), but we're not |
| * worried about executables, only filenames :> */ |
| char **cwd_tab_completion(const char *buf, size_t *num_matches, size_t |
| buflen) |
| { |
| char *dirname = mallocstrcpy(NULL, buf); |
| char *filename; |
| #ifndef DISABLE_OPERATINGDIR |
| size_t dirnamelen; |
| #endif |
| size_t filenamelen; |
| char **matches = NULL; |
| DIR *dir; |
| const struct dirent *nextdir; |
| |
| assert(dirname != NULL && num_matches != NULL && buflen >= 0); |
| |
| *num_matches = 0; |
| null_at(&dirname, buflen); |
| |
| /* Okie, if there's a / in the buffer, strip out the directory |
| * part. */ |
| filename = strrchr(dirname, '/'); |
| if (filename != NULL) { |
| char *tmpdirname = filename + 1; |
| |
| filename = mallocstrcpy(NULL, tmpdirname); |
| *tmpdirname = '\0'; |
| tmpdirname = dirname; |
| dirname = real_dir_from_tilde(dirname); |
| free(tmpdirname); |
| } else { |
| filename = dirname; |
| dirname = mallocstrcpy(NULL, "./"); |
| } |
| |
| assert(dirname[strlen(dirname) - 1] == '/'); |
| |
| dir = opendir(dirname); |
| |
| if (dir == NULL) { |
| /* Don't print an error, just shut up and return. */ |
| beep(); |
| free(filename); |
| free(dirname); |
| return NULL; |
| } |
| |
| #ifndef DISABLE_OPERATINGDIR |
| dirnamelen = strlen(dirname); |
| #endif |
| filenamelen = strlen(filename); |
| |
| while ((nextdir = readdir(dir)) != NULL) { |
| |
| #ifdef DEBUG |
| fprintf(stderr, "Comparing \'%s\'\n", nextdir->d_name); |
| #endif |
| /* See if this matches. */ |
| if (strncmp(nextdir->d_name, filename, filenamelen) == 0 && |
| (*filename == '.' || |
| (strcmp(nextdir->d_name, ".") != 0 && |
| strcmp(nextdir->d_name, "..") != 0))) { |
| /* Cool, found a match. Add it to the list. This makes a |
| * lot more sense to me (Chris) this way... */ |
| |
| #ifndef DISABLE_OPERATINGDIR |
| /* ...unless the match exists outside the operating |
| * directory, in which case just go to the next match. To |
| * properly do operating directory checking, we have to add |
| * the directory name to the beginning of the proposed match |
| * before we check it. */ |
| char *tmp2 = charalloc(strlen(dirname) + |
| strlen(nextdir->d_name) + 1); |
| |
| sprintf(tmp2, "%s%s", dirname, nextdir->d_name); |
| if (check_operating_dir(tmp2, TRUE)) { |
| free(tmp2); |
| continue; |
| } |
| free(tmp2); |
| #endif |
| |
| matches = (char **)nrealloc(matches, |
| (*num_matches + 1) * sizeof(char *)); |
| matches[*num_matches] = mallocstrcpy(NULL, nextdir->d_name); |
| ++(*num_matches); |
| } |
| } |
| closedir(dir); |
| free(dirname); |
| free(filename); |
| |
| return matches; |
| } |
| |
| /* Do tab completion. place refers to how much the statusbar cursor |
| * position should be advanced. */ |
| char *input_tab(char *buf, size_t *place, bool *lastwastab, bool *list) |
| { |
| size_t num_matches = 0; |
| char **matches = NULL; |
| |
| assert(buf != NULL && place != NULL && *place <= strlen(buf) && lastwastab != NULL && list != NULL); |
| |
| *list = FALSE; |
| |
| /* If the word starts with `~' and there is no slash in the word, |
| * then try completing this word as a username. */ |
| if (*place > 0 && *buf == '~') { |
| const char *bob = strchr(buf, '/'); |
| |
| if (bob == NULL || bob >= buf + *place) |
| matches = username_tab_completion(buf, &num_matches, |
| *place); |
| } |
| |
| /* Match against files relative to the current working directory. */ |
| if (matches == NULL) |
| matches = cwd_tab_completion(buf, &num_matches, *place); |
| |
| if (num_matches <= 0) |
| beep(); |
| else { |
| size_t match, common_len = 0; |
| char *mzero; |
| const char *lastslash = revstrstr(buf, "/", buf + *place); |
| size_t lastslash_len = (lastslash == NULL) ? 0 : |
| lastslash - buf + 1; |
| char *match1_mb = charalloc(mb_cur_max() + 1); |
| char *match2_mb = charalloc(mb_cur_max() + 1); |
| int match1_mb_len, match2_mb_len; |
| |
| while (TRUE) { |
| for (match = 1; match < num_matches; match++) { |
| match1_mb_len = parse_mbchar(matches[0] + common_len, |
| match1_mb, NULL, NULL); |
| match2_mb_len = parse_mbchar(matches[match] + |
| common_len, match2_mb, NULL, NULL); |
| match1_mb[match1_mb_len] = '\0'; |
| match2_mb[match2_mb_len] = '\0'; |
| if (strcmp(match1_mb, match2_mb) != 0) |
| break; |
| } |
| |
| if (match < num_matches || matches[0][common_len] == '\0') |
| break; |
| |
| common_len += parse_mbchar(buf + common_len, NULL, NULL, |
| NULL); |
| } |
| |
| free(match1_mb); |
| free(match2_mb); |
| |
| mzero = charalloc(lastslash_len + common_len + 1); |
| sprintf(mzero, "%.*s%.*s", lastslash_len, buf, common_len, |
| matches[0]); |
| |
| common_len += lastslash_len; |
| |
| assert(common_len >= *place); |
| |
| if (num_matches == 1 && is_dir(mzero)) { |
| mzero[common_len] = '/'; |
| common_len++; |
| |
| assert(common_len > *place); |
| } |
| |
| if (num_matches > 1 && (common_len != *place || |
| *lastwastab == FALSE)) |
| beep(); |
| |
| /* If there is more of a match to display on the statusbar, show |
| * it. We reset lastwastab to FALSE: it requires hitting Tab |
| * twice in succession with no statusbar changes to see a match |
| * list. */ |
| if (common_len != *place) { |
| size_t buflen = strlen(buf); |
| |
| *lastwastab = FALSE; |
| buf = charealloc(buf, common_len + buflen - *place + 1); |
| charmove(buf + common_len, buf + *place, |
| buflen - *place + 1); |
| charcpy(buf, mzero, common_len); |
| *place = common_len; |
| } else if (*lastwastab == FALSE || num_matches < 2) |
| *lastwastab = TRUE; |
| else { |
| int longest_name = 0, editline = 0; |
| size_t columns; |
| |
| /* Now we show a list of the available choices. */ |
| assert(num_matches > 1); |
| |
| /* Sort the list. */ |
| qsort(matches, num_matches, sizeof(char *), diralphasort); |
| |
| for (match = 0; match < num_matches; match++) { |
| common_len = strnlenpt(matches[match], COLS - 1); |
| |
| if (common_len > COLS - 1) { |
| longest_name = COLS - 1; |
| break; |
| } |
| |
| if (common_len > longest_name) |
| longest_name = common_len; |
| } |
| |
| assert(longest_name <= COLS - 1); |
| |
| /* Each column will be longest_name + 2 characters wide, |
| * i.e, two spaces between columns, except that there will |
| * be only one space after the last column. */ |
| columns = (COLS + 1) / (longest_name + 2); |
| |
| /* Blank the edit window, and print the matches out |
| * there. */ |
| blank_edit(); |
| wmove(edit, 0, 0); |
| |
| /* Disable el cursor. */ |
| curs_set(0); |
| |
| for (match = 0; match < num_matches; match++) { |
| char *disp; |
| |
| wmove(edit, editline, (longest_name + 2) * |
| (match % columns)); |
| |
| if (match % columns == 0 && |
| editline == editwinrows - 1 && |
| num_matches - match > columns) { |
| waddstr(edit, _("(more)")); |
| break; |
| } |
| |
| disp = display_string(matches[match], 0, longest_name, |
| FALSE); |
| waddstr(edit, disp); |
| free(disp); |
| |
| if ((match + 1) % columns == 0) |
| editline++; |
| } |
| wrefresh(edit); |
| *list = TRUE; |
| } |
| |
| free(mzero); |
| } |
| |
| free_chararray(matches, num_matches); |
| |
| /* Only refresh the edit window if we don't have a list of filename |
| * matches on it. */ |
| if (*list == FALSE) |
| edit_refresh(); |
| |
| /* Enable el cursor. */ |
| curs_set(1); |
| |
| return buf; |
| } |
| #endif /* !DISABLE_TABCOMP */ |
| |
| /* Only print the last part of a path. Isn't there a shell command for |
| * this? */ |
| const char *tail(const char *foo) |
| { |
| const char *tmp = strrchr(foo, '/'); |
| |
| if (tmp == NULL) |
| tmp = foo; |
| else if (*tmp == '/') |
| tmp++; |
| |
| return tmp; |
| } |
| |
| #ifndef DISABLE_BROWSER |
| /* Strip one directory from the end of path. */ |
| void striponedir(char *path) |
| { |
| char *tmp; |
| |
| assert(path != NULL); |
| |
| tmp = strrchr(path, '/'); |
| |
| if (tmp != NULL) |
| *tmp = '\0'; |
| } |
| |
| /* Return a list of files contained in the directory path. *longest is |
| * the maximum display length of a file, up to COLS - 1 (but at least |
| * 7). *numents is the number of files. We assume path exists and is a |
| * directory. If neither is true, we return NULL. */ |
| char **browser_init(const char *path, int *longest, size_t *numents, DIR |
| *dir) |
| { |
| const struct dirent *nextdir; |
| char **filelist; |
| size_t i = 0, path_len; |
| |
| assert(dir != NULL); |
| |
| *longest = 0; |
| |
| while ((nextdir = readdir(dir)) != NULL) { |
| size_t dlen; |
| |
| /* Don't show the "." entry. */ |
| if (strcmp(nextdir->d_name, ".") == 0) |
| continue; |
| i++; |
| |
| dlen = strlenpt(nextdir->d_name); |
| if (dlen > *longest) |
| *longest = (dlen > COLS - 1) ? COLS - 1 : dlen; |
| } |
| |
| *numents = i; |
| rewinddir(dir); |
| *longest += 10; |
| |
| filelist = (char **)nmalloc(*numents * sizeof(char *)); |
| |
| path_len = strlen(path); |
| |
| i = 0; |
| |
| while ((nextdir = readdir(dir)) != NULL && i < *numents) { |
| /* Don't show the "." entry. */ |
| if (strcmp(nextdir->d_name, ".") == 0) |
| continue; |
| |
| filelist[i] = charalloc(path_len + strlen(nextdir->d_name) + 1); |
| sprintf(filelist[i], "%s%s", path, nextdir->d_name); |
| i++; |
| } |
| |
| /* Maybe the number of files in the directory changed between the |
| * first time we scanned and the second. i is the actual length of |
| * filelist, so record it. */ |
| *numents = i; |
| closedir(dir); |
| |
| if (*longest > COLS - 1) |
| *longest = COLS - 1; |
| if (*longest < 7) |
| *longest = 7; |
| |
| return filelist; |
| } |
| |
| /* Our browser function. path is the path to start browsing from. |
| * Assume path has already been tilde-expanded. */ |
| char *do_browser(char *path, DIR *dir) |
| { |
| int kbinput, longest, selected, width; |
| bool meta_key, func_key, old_const_update = ISSET(CONST_UPDATE); |
| size_t numents; |
| char **filelist, *retval = NULL; |
| |
| curs_set(0); |
| blank_statusbar(); |
| bottombars(browser_list); |
| wrefresh(bottomwin); |
| |
| #if !defined(DISABLE_HELP) || !defined(DISABLE_MOUSE) |
| /* Set currshortcut so the user can click in the shortcut area, and |
| * so the browser help screen will come up. */ |
| currshortcut = browser_list; |
| #endif |
| |
| UNSET(CONST_UPDATE); |
| |
| change_browser_directory: |
| /* We go here after the user selects a new directory. */ |
| |
| kbinput = ERR; |
| selected = 0; |
| width = 0; |
| |
| path = mallocstrassn(path, get_full_path(path)); |
| |
| /* Assume that path exists and ends with a slash. */ |
| assert(path != NULL && path[strlen(path) - 1] == '/'); |
| |
| /* Get the list of files. */ |
| filelist = browser_init(path, &longest, &numents, dir); |
| |
| assert(filelist != NULL); |
| |
| /* Sort the list. */ |
| qsort(filelist, numents, sizeof(char *), diralphasort); |
| |
| titlebar(path); |
| |
| /* Loop invariant: Microsoft sucks. */ |
| do { |
| bool abort = FALSE; |
| int j, col = 0, editline = 0, fileline; |
| int filecols = 0; |
| /* Used only if width == 0, to calculate the number of files |
| * per row below. */ |
| struct stat st; |
| char *new_path; |
| /* Used by the Go To Directory prompt. */ |
| #ifndef DISABLE_MOUSE |
| MEVENT mevent; |
| #endif |
| |
| check_statusblank(); |
| |
| /* Compute the line number we're on now, so that we don't divide |
| * by zero later. */ |
| fileline = selected; |
| if (width != 0) |
| fileline /= width; |
| |
| switch (kbinput) { |
| #ifndef DISABLE_MOUSE |
| case KEY_MOUSE: |
| if (getmouse(&mevent) == ERR) |
| break; |
| |
| /* If we clicked in the edit window, we probably clicked |
| * on a file. */ |
| if (wenclose(edit, mevent.y, mevent.x)) { |
| int old_selected = selected; |
| |
| /* Subtract out the size of topwin. */ |
| mevent.y -= 2 - no_more_space(); |
| |
| /* longest is the width of each column. There are |
| * two spaces between each column. */ |
| selected = (fileline / editwinrows) * editwinrows * |
| width + mevent.y * width + mevent.x / |
| (longest + 2); |
| |
| /* If they clicked beyond the end of a row, select |
| * the end of that row. */ |
| if (mevent.x > width * (longest + 2)) |
| selected--; |
| |
| /* If we're off the screen, reset to the last item. |
| * If we clicked the same place as last time, select |
| * this name! */ |
| if (selected > numents - 1) |
| selected = numents - 1; |
| else if (old_selected == selected) |
| /* Put back the 'select' key. */ |
| unget_kbinput('s', FALSE, FALSE); |
| } else { |
| /* We must have clicked a shortcut. Put back the |
| * equivalent shortcut key. */ |
| int mouse_x, mouse_y; |
| get_mouseinput(&mouse_x, &mouse_y, TRUE); |
| } |
| |
| break; |
| #endif |
| case NANO_PREVLINE_KEY: |
| if (selected >= width) |
| selected -= width; |
| break; |
| case NANO_BACK_KEY: |
| if (selected > 0) |
| selected--; |
| break; |
| case NANO_NEXTLINE_KEY: |
| if (selected + width <= numents - 1) |
| selected += width; |
| break; |
| case NANO_FORWARD_KEY: |
| if (selected < numents - 1) |
| selected++; |
| break; |
| case NANO_PREVPAGE_KEY: |
| case NANO_PREVPAGE_FKEY: |
| case '-': /* Pico compatibility. */ |
| if (selected >= (editwinrows + fileline % editwinrows) * |
| width) |
| selected -= (editwinrows + fileline % editwinrows) * |
| width; |
| else |
| selected = 0; |
| break; |
| case NANO_NEXTPAGE_KEY: |
| case NANO_NEXTPAGE_FKEY: |
| case ' ': /* Pico compatibility. */ |
| selected += (editwinrows - fileline % editwinrows) * |
| width; |
| if (selected >= numents) |
| selected = numents - 1; |
| break; |
| case NANO_HELP_KEY: |
| case NANO_HELP_FKEY: |
| case '?': /* Pico compatibility. */ |
| #ifndef DISABLE_HELP |
| do_help(); |
| curs_set(0); |
| #else |
| nano_disabled_msg(); |
| #endif |
| break; |
| case NANO_ENTER_KEY: |
| case 'S': /* Pico compatibility. */ |
| case 's': |
| /* You can't move up from "/". */ |
| if (strcmp(filelist[selected], "/..") == 0) { |
| statusbar(_("Can't move up a directory")); |
| beep(); |
| break; |
| } |
| |
| #ifndef DISABLE_OPERATINGDIR |
| /* Note: the selected file can be outside the operating |
| * directory if it's ".." or if it's a symlink to a |
| * directory outside the operating directory. */ |
| if (check_operating_dir(filelist[selected], FALSE)) { |
| statusbar( |
| _("Can't go outside of %s in restricted mode"), |
| operating_dir); |
| beep(); |
| break; |
| } |
| #endif |
| |
| if (stat(filelist[selected], &st) == -1) { |
| statusbar(_("Error reading %s: %s"), |
| filelist[selected], strerror(errno)); |
| beep(); |
| break; |
| } |
| |
| if (!S_ISDIR(st.st_mode)) { |
| retval = mallocstrcpy(retval, filelist[selected]); |
| abort = TRUE; |
| break; |
| } |
| |
| dir = opendir(filelist[selected]); |
| if (dir == NULL) { |
| /* We can't open this dir for some reason. |
| * Complain. */ |
| statusbar(_("Error reading %s: %s"), |
| filelist[selected], strerror(errno)); |
| break; |
| } |
| |
| path = mallocstrcpy(path, filelist[selected]); |
| |
| /* Start over again with the new path value. */ |
| free_chararray(filelist, numents); |
| goto change_browser_directory; |
| |
| /* Refresh the screen. */ |
| case NANO_REFRESH_KEY: |
| total_redraw(); |
| break; |
| |
| /* Go to a specific directory. */ |
| case NANO_GOTOLINE_KEY: |
| case NANO_GOTOLINE_FKEY: |
| case 'G': /* Pico compatibility. */ |
| case 'g': |
| curs_set(1); |
| |
| j = statusq(FALSE, gotodir_list, "", |
| #ifndef NANO_SMALL |
| NULL, |
| #endif |
| _("Go To Directory")); |
| |
| curs_set(0); |
| bottombars(browser_list); |
| |
| if (j < 0) { |
| statusbar(_("Cancelled")); |
| break; |
| } |
| |
| new_path = real_dir_from_tilde(answer); |
| |
| if (new_path[0] != '/') { |
| new_path = charealloc(new_path, strlen(path) + |
| strlen(answer) + 1); |
| sprintf(new_path, "%s%s", path, answer); |
| } |
| |
| #ifndef DISABLE_OPERATINGDIR |
| if (check_operating_dir(new_path, FALSE)) { |
| statusbar( |
| _("Can't go outside of %s in restricted mode"), |
| operating_dir); |
| free(new_path); |
| break; |
| } |
| #endif |
| |
| dir = opendir(new_path); |
| if (dir == NULL) { |
| /* We can't open this dir for some reason. |
| * Complain. */ |
| statusbar(_("Error reading %s: %s"), answer, |
| strerror(errno)); |
| free(new_path); |
| break; |
| } |
| |
| /* Start over again with the new path value. */ |
| free(path); |
| path = new_path; |
| free_chararray(filelist, numents); |
| goto change_browser_directory; |
| |
| /* Abort the browser. */ |
| case NANO_EXIT_KEY: |
| case NANO_EXIT_FKEY: |
| case 'E': /* Pico compatibility. */ |
| case 'e': |
| abort = TRUE; |
| break; |
| } |
| |
| if (abort) |
| break; |
| |
| blank_edit(); |
| |
| if (width != 0) |
| j = width * editwinrows * |
| ((selected / width) / editwinrows); |
| else |
| j = 0; |
| |
| wmove(edit, 0, 0); |
| |
| { |
| int foo_len = mb_cur_max() * 7; |
| char *foo = charalloc(foo_len + 1); |
| |
| for (; j < numents && editline <= editwinrows - 1; j++) { |
| char *disp = display_string(tail(filelist[j]), 0, |
| longest, FALSE); |
| |
| /* Highlight the currently selected file/dir. */ |
| if (j == selected) |
| wattron(edit, A_REVERSE); |
| |
| mvwaddnstr(edit, editline, col, hblank, longest); |
| mvwaddstr(edit, editline, col, disp); |
| free(disp); |
| |
| col += longest; |
| filecols++; |
| |
| /* Show file info also. We don't want to report file |
| * sizes for links, so we use lstat(). Also, stat() and |
| * lstat() return an error if, for example, the file is |
| * deleted while the file browser is open. In that |
| * case, we report "--" as the file info. */ |
| if (lstat(filelist[j], &st) == -1 || |
| S_ISLNK(st.st_mode)) { |
| /* Aha! It's a symlink! Now, is it a dir? If so, |
| * mark it as such. */ |
| if (stat(filelist[j], &st) == 0 && |
| S_ISDIR(st.st_mode)) { |
| charcpy(foo, _("(dir)"), foo_len); |
| foo[foo_len] = '\0'; |
| } else |
| strcpy(foo, "--"); |
| } else if (S_ISDIR(st.st_mode)) { |
| charcpy(foo, _("(dir)"), foo_len); |
| foo[foo_len] = '\0'; |
| } else if (st.st_size < (1 << 10)) /* less than 1 k. */ |
| sprintf(foo, "%4u B", (unsigned int)st.st_size); |
| else if (st.st_size < (1 << 20)) /* less than 1 meg. */ |
| sprintf(foo, "%4u KB", |
| (unsigned int)(st.st_size >> 10)); |
| else if (st.st_size < (1 << 30)) /* less than 1 gig. */ |
| sprintf(foo, "%4u MB", |
| (unsigned int)(st.st_size >> 20)); |
| else |
| sprintf(foo, "%4u GB", |
| (unsigned int)(st.st_size >> 30)); |
| |
| mvwaddnstr(edit, editline, col - strlen(foo), foo, |
| foo_len); |
| |
| if (j == selected) |
| wattroff(edit, A_REVERSE); |
| |
| /* Add some space between the columns. */ |
| col += 2; |
| |
| /* If the next entry isn't going to fit on the line, |
| * move to the next line. */ |
| if (col > COLS - longest) { |
| editline++; |
| col = 0; |
| if (width == 0) |
| width = filecols; |
| } |
| |
| wmove(edit, editline, col); |
| } |
| |
| free(foo); |
| } |
| |
| wrefresh(edit); |
| } while ((kbinput = get_kbinput(edit, &meta_key, &func_key)) != |
| NANO_EXIT_KEY && kbinput != NANO_EXIT_FKEY); |
| |
| blank_edit(); |
| titlebar(NULL); |
| edit_refresh(); |
| curs_set(1); |
| if (old_const_update) |
| SET(CONST_UPDATE); |
| |
| /* Clean up. */ |
| free_chararray(filelist, numents); |
| free(path); |
| |
| return retval; |
| } |
| |
| /* The file browser front end. We check to see if inpath has a dir in |
| * it. If it does, we start do_browser() from there. Otherwise, we |
| * start do_browser() from the current directory. */ |
| char *do_browse_from(const char *inpath) |
| { |
| struct stat st; |
| char *path; |
| /* This holds the tilde-expanded version of inpath. */ |
| DIR *dir = NULL; |
| |
| assert(inpath != NULL); |
| |
| path = real_dir_from_tilde(inpath); |
| |
| /* Perhaps path is a directory. If so, we'll pass it to |
| * do_browser(). Or perhaps path is a directory / a file. If so, |
| * we'll try stripping off the last path element and passing it to |
| * do_browser(). Or perhaps path doesn't have a directory portion |
| * at all. If so, we'll just pass the current directory to |
| * do_browser(). */ |
| if (stat(path, &st) == -1 || !S_ISDIR(st.st_mode)) { |
| striponedir(path); |
| if (stat(path, &st) == -1 || !S_ISDIR(st.st_mode)) { |
| free(path); |
| |
| path = charalloc(PATH_MAX + 1); |
| path = getcwd(path, PATH_MAX + 1); |
| |
| if (path != NULL) |
| align(&path); |
| } |
| } |
| |
| #ifndef DISABLE_OPERATINGDIR |
| /* If the resulting path isn't in the operating directory, use |
| * the operating directory instead. */ |
| if (check_operating_dir(path, FALSE)) { |
| if (path != NULL) |
| free(path); |
| path = mallocstrcpy(NULL, operating_dir); |
| } |
| #endif |
| |
| if (path != NULL) |
| dir = opendir(path); |
| |
| if (dir == NULL) { |
| beep(); |
| free(path); |
| return NULL; |
| } |
| |
| return do_browser(path, dir); |
| } |
| #endif /* !DISABLE_BROWSER */ |
| |
| #if !defined(NANO_SMALL) && defined(ENABLE_NANORC) |
| /* Return $HOME/.nano_history, or NULL if we can't find the homedir. |
| * The string is dynamically allocated, and should be freed. */ |
| char *histfilename(void) |
| { |
| char *nanohist = NULL; |
| |
| if (homedir != NULL) { |
| size_t homelen = strlen(homedir); |
| |
| nanohist = charalloc(homelen + 15); |
| strcpy(nanohist, homedir); |
| strcpy(nanohist + homelen, "/.nano_history"); |
| } |
| return nanohist; |
| } |
| |
| void load_history(void) |
| { |
| char *nanohist = histfilename(); |
| |
| /* Assume do_rcfile() has reported a missing home directory. */ |
| if (nanohist != NULL) { |
| FILE *hist = fopen(nanohist, "r"); |
| |
| if (hist == NULL) { |
| if (errno != ENOENT) { |
| /* Don't save history when we quit. */ |
| UNSET(HISTORYLOG); |
| rcfile_error(N_("Error reading %s: %s"), nanohist, |
| strerror(errno)); |
| fprintf(stderr, |
| _("\nPress Return to continue starting nano\n")); |
| while (getchar() != '\n') |
| ; |
| } |
| } else { |
| /* Load a history (first the search history, then the |
| * replace history) from oldest to newest. Assume the last |
| * history entry is a blank line. */ |
| filestruct **history = &search_history; |
| char *line = NULL; |
| size_t buflen = 0; |
| ssize_t read; |
| |
| while ((read = getline(&line, &buflen, hist)) >= 0) { |
| if (read > 0 && line[read - 1] == '\n') { |
| read--; |
| line[read] = '\0'; |
| } |
| if (read > 0) { |
| unsunder(line, read); |
| update_history(history, line); |
| } else |
| history = &replace_history; |
| } |
| |
| fclose(hist); |
| free(line); |
| } |
| free(nanohist); |
| } |
| } |
| |
| bool writehist(FILE *hist, filestruct *h) |
| { |
| filestruct *p; |
| |
| /* Write history from oldest to newest. Assume the last history |
| * entry is a blank line. */ |
| for (p = h; p != NULL; p = p->next) { |
| size_t p_len = strlen(p->data); |
| |
| sunder(p->data); |
| |
| if (fwrite(p->data, sizeof(char), p_len, hist) < p_len || |
| putc('\n', hist) == EOF) |
| return FALSE; |
| } |
| |
| return TRUE; |
| } |
| |
| /* Save histories to ~/.nano_history. */ |
| void save_history(void) |
| { |
| char *nanohist; |
| |
| /* Don't save unchanged or empty histories. */ |
| if (!history_has_changed() || (searchbot->lineno == 1 && |
| replacebot->lineno == 1)) |
| return; |
| |
| nanohist = histfilename(); |
| |
| if (nanohist != NULL) { |
| FILE *hist = fopen(nanohist, "wb"); |
| |
| if (hist == NULL) |
| rcfile_error(N_("Error writing %s: %s"), nanohist, |
| strerror(errno)); |
| else { |
| /* Make sure no one else can read from or write to the |
| * history file. */ |
| chmod(nanohist, S_IRUSR | S_IWUSR); |
| |
| if (!writehist(hist, searchage) || !writehist(hist, |
| replaceage)) |
| rcfile_error(N_("Error writing %s: %s"), nanohist, |
| strerror(errno)); |
| |
| fclose(hist); |
| } |
| |
| free(nanohist); |
| } |
| } |
| #endif /* !NANO_SMALL && ENABLE_NANORC */ |