2691 lines
76 KiB
C
2691 lines
76 KiB
C
/**************************************************************************
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* files.c -- This file is part of GNU nano. *
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* *
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* Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc. *
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* Copyright (C) 2015-2021 Benno Schulenberg *
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* *
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* GNU nano is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published *
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* by the Free Software Foundation, either version 3 of the License, *
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* or (at your option) any later version. *
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* *
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* GNU nano is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty *
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
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* See the GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see http://www.gnu.org/licenses/. *
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* *
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**************************************************************************/
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#include "prototypes.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <libgen.h>
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#ifdef HAVE_PWD_H
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#include <pwd.h>
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#endif
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#include <string.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#define RW_FOR_ALL (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
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/* Add an item to the circular list of openfile structs. */
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void make_new_buffer(void)
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{
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openfilestruct *newnode = nmalloc(sizeof(openfilestruct));
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#ifdef ENABLE_MULTIBUFFER
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if (openfile == NULL) {
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/* Make the first buffer the only element in the list. */
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newnode->prev = newnode;
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newnode->next = newnode;
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startfile = newnode;
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} else {
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/* Add the new buffer after the current one in the list. */
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newnode->prev = openfile;
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newnode->next = openfile->next;
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openfile->next->prev = newnode;
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openfile->next = newnode;
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/* There is more than one buffer: show "Close" in help lines. */
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exitfunc->desc = close_tag;
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more_than_one = !inhelp || more_than_one;
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}
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#endif
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/* Make the new buffer the current one, and start initializing it. */
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openfile = newnode;
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openfile->filename = copy_of("");
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openfile->filetop = make_new_node(NULL);
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openfile->filetop->data = copy_of("");
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openfile->filebot = openfile->filetop;
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openfile->current = openfile->filetop;
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openfile->current_x = 0;
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openfile->placewewant = 0;
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openfile->current_y = 0;
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openfile->edittop = openfile->filetop;
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openfile->firstcolumn = 0;
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openfile->totsize = 0;
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openfile->modified = FALSE;
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#ifdef ENABLE_WRAPPING
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openfile->spillage_line = NULL;
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#endif
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#ifndef NANO_TINY
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openfile->mark = NULL;
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openfile->softmark = FALSE;
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openfile->fmt = UNSPECIFIED;
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openfile->undotop = NULL;
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openfile->current_undo = NULL;
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openfile->last_saved = NULL;
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openfile->last_action = OTHER;
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openfile->statinfo = NULL;
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openfile->lock_filename = NULL;
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#endif
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#ifdef ENABLE_MULTIBUFFER
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openfile->errormessage = NULL;
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#endif
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#ifdef ENABLE_COLOR
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openfile->syntax = NULL;
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#endif
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}
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/* Return the given file name in a way that fits within the given space. */
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char *crop_to_fit(const char *name, int room)
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{
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char *clipped;
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if (breadth(name) <= room)
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return display_string(name, 0, room, FALSE, FALSE);
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if (room < 4)
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return copy_of("_");
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clipped = display_string(name, breadth(name) - room + 3, room, FALSE, FALSE);
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clipped = nrealloc(clipped, strlen(clipped) + 4);
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memmove(clipped + 3, clipped, strlen(clipped) + 1);
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clipped[0] = '.'; clipped[1] = '.'; clipped[2] = '.';
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return clipped;
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}
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#ifndef NANO_TINY
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/* Delete the lock file. Return TRUE on success, and FALSE otherwise. */
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bool delete_lockfile(const char *lockfilename)
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{
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if (unlink(lockfilename) < 0 && errno != ENOENT) {
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statusline(MILD, _("Error deleting lock file %s: %s"),
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lockfilename, strerror(errno));
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return FALSE;
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} else
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return TRUE;
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}
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#define LOCKSIZE 1024
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#define SKIPTHISFILE (char *)-1
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const char *locking_prefix = ".";
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const char *locking_suffix = ".swp";
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/* Write a lock file, under the given lockfilename. This always annihilates an
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* existing version of that file. Return TRUE on success; FALSE otherwise. */
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bool write_lockfile(const char *lockfilename, const char *filename, bool modified)
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{
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#ifdef HAVE_PWD_H
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pid_t mypid = getpid();
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uid_t myuid = geteuid();
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struct passwd *mypwuid = getpwuid(myuid);
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char myhostname[32];
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int fd;
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FILE *filestream = NULL;
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char *lockdata;
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size_t wroteamt;
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if (mypwuid == NULL) {
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/* TRANSLATORS: Keep the next seven messages at most 76 characters. */
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statusline(MILD, _("Couldn't determine my identity for lock file"));
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return FALSE;
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}
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if (gethostname(myhostname, 31) < 0 && errno != ENAMETOOLONG) {
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statusline(MILD, _("Couldn't determine hostname: %s"), strerror(errno));
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return FALSE;
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} else
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myhostname[31] = '\0';
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/* First make sure to remove an existing lock file. */
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if (!delete_lockfile(lockfilename))
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return FALSE;
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/* Create the lock file -- do not accept an existing one. */
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fd = open(lockfilename, O_WRONLY|O_CREAT|O_EXCL, RW_FOR_ALL);
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if (fd > 0)
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filestream = fdopen(fd, "wb");
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if (filestream == NULL) {
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statusline(MILD, _("Error writing lock file %s: %s"),
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lockfilename, strerror(errno));
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if (fd > 0)
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close(fd);
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return FALSE;
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}
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lockdata = nmalloc(LOCKSIZE);
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memset(lockdata, 0, LOCKSIZE);
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/* This is the lock data we will store (other bytes remain 0x00):
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*
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* bytes 0-1 - 0x62 0x30
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* bytes 2-11 - name of program that created the lock
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* bytes 24-27 - PID (little endian) of creator process
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* bytes 28-43 - username of the user who created the lock
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* bytes 68-99 - hostname of machine from where the lock was created
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* bytes 108-876 - filename that the lock is for
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* byte 1007 - 0x55 if file is modified
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*
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* Nano does not write the page size (bytes 12-15), nor the modification
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* time (bytes 16-19), nor the inode of the relevant file (bytes 20-23).
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* Nano also does not use all available space for user name (40 bytes),
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* host name (40 bytes), and file name (890 bytes). Nor does nano write
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* some byte-order-checking numbers (bytes 1008-1022). */
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lockdata[0] = 0x62;
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lockdata[1] = 0x30;
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/* It's fine to overwrite byte 12 with the \0 as it is 0x00 anyway. */
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snprintf(&lockdata[2], 11, "nano %s", VERSION);
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lockdata[24] = mypid % 256;
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lockdata[25] = (mypid / 256) % 256;
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lockdata[26] = (mypid / (256 * 256)) % 256;
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lockdata[27] = mypid / (256 * 256 * 256);
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strncpy(&lockdata[28], mypwuid->pw_name, 16);
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strncpy(&lockdata[68], myhostname, 32);
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strncpy(&lockdata[108], filename, 768);
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lockdata[1007] = (modified) ? 0x55 : 0x00;
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wroteamt = fwrite(lockdata, sizeof(char), LOCKSIZE, filestream);
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free(lockdata);
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if (fclose(filestream) == EOF || wroteamt < LOCKSIZE) {
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statusline(MILD, _("Error writing lock file %s: %s"),
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lockfilename, strerror(errno));
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return FALSE;
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}
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#endif
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return TRUE;
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}
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/* First check if a lock file already exists. If so, and ask_the_user is TRUE,
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* then ask whether to open the corresponding file anyway. Return SKIPTHISFILE
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* when the user answers "No", return the name of the lock file on success, and
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* return NULL on failure. */
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char *do_lockfile(const char *filename, bool ask_the_user)
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{
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char *namecopy = copy_of(filename);
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char *secondcopy = copy_of(filename);
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size_t locknamesize = strlen(filename) + strlen(locking_prefix) +
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strlen(locking_suffix) + 3;
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char *lockfilename = nmalloc(locknamesize);
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struct stat fileinfo;
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snprintf(lockfilename, locknamesize, "%s/%s%s%s", dirname(namecopy),
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locking_prefix, basename(secondcopy), locking_suffix);
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free(secondcopy);
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free(namecopy);
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if (!ask_the_user && stat(lockfilename, &fileinfo) != -1) {
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blank_bottombars();
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statusline(ALERT, _("Someone else is also editing this file"));
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napms(1200);
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} else if (stat(lockfilename, &fileinfo) != -1) {
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char *lockbuf, *question, *pidstring, *postedname, *promptstr;
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static char lockprog[11], lockuser[17];
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int lockfd, lockpid, choice;
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ssize_t readamt;
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if ((lockfd = open(lockfilename, O_RDONLY)) < 0) {
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statusline(ALERT, _("Error opening lock file %s: %s"),
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lockfilename, strerror(errno));
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free(lockfilename);
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return NULL;
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}
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lockbuf = nmalloc(LOCKSIZE);
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readamt = read(lockfd, lockbuf, LOCKSIZE);
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close(lockfd);
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/* If not enough data has been read to show the needed things,
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* or the two magic bytes are not there, skip the lock file. */
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if (readamt < 68 || lockbuf[0] != 0x62 || lockbuf[1] != 0x30) {
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statusline(ALERT, _("Bad lock file is ignored: %s"), lockfilename);
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free(lockfilename);
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free(lockbuf);
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return NULL;
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}
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strncpy(lockprog, &lockbuf[2], 10);
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lockprog[10] = '\0';
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lockpid = (((unsigned char)lockbuf[27] * 256 + (unsigned char)lockbuf[26]) * 256 +
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(unsigned char)lockbuf[25]) * 256 + (unsigned char)lockbuf[24];
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strncpy(lockuser, &lockbuf[28], 16);
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lockuser[16] = '\0';
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free(lockbuf);
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pidstring = nmalloc(11);
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sprintf (pidstring, "%u", (unsigned int)lockpid);
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/* Display newlines in filenames as ^J. */
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as_an_at = FALSE;
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/* TRANSLATORS: The second %s is the name of the user, the third that of the editor. */
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question = _("File %s is being edited by %s (with %s, PID %s); open anyway?");
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postedname = crop_to_fit(filename, COLS - breadth(question) - breadth(lockuser) -
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breadth(lockprog) - breadth(pidstring) + 7);
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/* Allow extra space for username (14), program name (8), PID (8),
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* and terminating \0 (1), minus the %s (2) for the file name. */
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promptstr = nmalloc(strlen(question) + 29 + strlen(postedname));
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sprintf(promptstr, question, postedname, lockuser, lockprog, pidstring);
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free(postedname);
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free(pidstring);
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choice = do_yesno_prompt(FALSE, promptstr);
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free(promptstr);
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/* When the user cancelled while we're still starting up, quit. */
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if (choice < 0 && !we_are_running)
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finish();
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if (choice < 1) {
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free(lockfilename);
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wipe_statusbar();
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return SKIPTHISFILE;
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}
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}
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if (write_lockfile(lockfilename, filename, FALSE))
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return lockfilename;
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free(lockfilename);
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return NULL;
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}
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/* Perform a stat call on the given filename, allocating a stat struct
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* if necessary. On success, *pstat points to the stat's result. On
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* failure, *pstat is freed and made NULL. */
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void stat_with_alloc(const char *filename, struct stat **pstat)
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{
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if (*pstat == NULL)
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*pstat = nmalloc(sizeof(struct stat));
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if (stat(filename, *pstat) != 0) {
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free(*pstat);
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*pstat = NULL;
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}
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}
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#endif /* !NANO_TINY */
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/* Verify that the containing directory of the given filename exists. */
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bool has_valid_path(const char *filename)
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{
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char *namecopy = copy_of(filename);
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char *parentdir = dirname(namecopy);
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struct stat parentinfo;
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bool validity = FALSE;
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if (stat(parentdir, &parentinfo) == -1) {
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if (errno == ENOENT)
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/* TRANSLATORS: Keep the next ten messages at most 76 characters. */
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statusline(ALERT, _("Directory '%s' does not exist"), parentdir);
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else
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statusline(ALERT, _("Path '%s': %s"), parentdir, strerror(errno));
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} else if (!S_ISDIR(parentinfo.st_mode))
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statusline(ALERT, _("Path '%s' is not a directory"), parentdir);
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else if (access(parentdir, X_OK) == -1)
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statusline(ALERT, _("Path '%s' is not accessible"), parentdir);
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#ifndef NANO_TINY
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else if (ISSET(LOCKING) && !ISSET(VIEW_MODE) && access(parentdir, W_OK) < 0)
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statusline(MILD, _("Directory '%s' is not writable"), parentdir);
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#endif
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else
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validity = TRUE;
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free(namecopy);
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return validity;
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}
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/* This does one of three things. If the filename is "", it just creates
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* a new empty buffer. When the filename is not empty, it reads that file
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* into a new buffer when requested, otherwise into the existing buffer. */
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bool open_buffer(const char *filename, bool new_one)
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{
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char *realname;
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/* The filename after tilde expansion. */
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struct stat fileinfo;
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int descriptor = 0;
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/* Code 0 means new file, -1 means failure, and else it's the fd. */
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FILE *f;
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/* Display newlines in filenames as ^J. */
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as_an_at = FALSE;
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#ifdef ENABLE_OPERATINGDIR
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if (outside_of_confinement(filename, FALSE)) {
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statusline(ALERT, _("Can't read file from outside of %s"), operating_dir);
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return FALSE;
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}
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#endif
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realname = real_dir_from_tilde(filename);
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/* Don't try to open directories, character files, or block files. */
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if (*filename != '\0' && stat(realname, &fileinfo) == 0) {
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if (S_ISDIR(fileinfo.st_mode)) {
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statusline(ALERT, _("\"%s\" is a directory"), realname);
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free(realname);
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return FALSE;
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}
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if (S_ISCHR(fileinfo.st_mode) || S_ISBLK(fileinfo.st_mode)) {
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statusline(ALERT, _("\"%s\" is a device file"), realname);
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free(realname);
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return FALSE;
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}
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#ifdef NANO_TINY
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if (S_ISFIFO(fileinfo.st_mode)) {
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statusline(ALERT, _("\"%s\" is a FIFO"), realname);
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free(realname);
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return FALSE;
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}
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#else
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if (new_one && !(fileinfo.st_mode & (S_IWUSR|S_IWGRP|S_IWOTH)) &&
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geteuid() == ROOT_UID)
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statusline(ALERT, _("%s is meant to be read-only"), realname);
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#endif
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}
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/* When loading into a new buffer, first check the file's path is valid,
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* and then (if requested and possible) create a lock file for it. */
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if (new_one) {
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make_new_buffer();
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if (has_valid_path(realname)) {
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#ifndef NANO_TINY
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if (ISSET(LOCKING) && !ISSET(VIEW_MODE) && filename[0] != '\0') {
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char *thelocksname = do_lockfile(realname, TRUE);
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/* When not overriding an existing lock, discard the buffer. */
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if (thelocksname == SKIPTHISFILE) {
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#ifdef ENABLE_MULTIBUFFER
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close_buffer();
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#endif
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free(realname);
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return FALSE;
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} else
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openfile->lock_filename = thelocksname;
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}
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#endif /* NANO_TINY */
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}
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}
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/* If we have a filename and are not in NOREAD mode, open the file. */
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if (filename[0] != '\0' && !ISSET(NOREAD_MODE))
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descriptor = open_file(realname, new_one, &f);
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/* If we've successfully opened an existing file, read it in. */
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if (descriptor > 0) {
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install_handler_for_Ctrl_C();
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read_file(f, descriptor, realname, !new_one);
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restore_handler_for_Ctrl_C();
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#ifndef NANO_TINY
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if (openfile->statinfo == NULL)
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stat_with_alloc(realname, &openfile->statinfo);
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#endif
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}
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/* For a new buffer, store filename and put cursor at start of buffer. */
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if (descriptor >= 0 && new_one) {
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openfile->filename = mallocstrcpy(openfile->filename, realname);
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openfile->current = openfile->filetop;
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openfile->current_x = 0;
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openfile->placewewant = 0;
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}
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|
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#ifdef ENABLE_COLOR
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/* If a new buffer was opened, check whether a syntax can be applied. */
|
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if (new_one)
|
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find_and_prime_applicable_syntax();
|
|
#endif
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|
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free(realname);
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return TRUE;
|
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}
|
|
|
|
/* Mark the current buffer as modified if it isn't already, and
|
|
* then update the title bar to display the buffer's new status. */
|
|
void set_modified(void)
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|
{
|
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if (openfile->modified)
|
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return;
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|
|
openfile->modified = TRUE;
|
|
titlebar(NULL);
|
|
|
|
#ifndef NANO_TINY
|
|
if (openfile->lock_filename != NULL)
|
|
write_lockfile(openfile->lock_filename, openfile->filename, TRUE);
|
|
#endif
|
|
}
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|
|
/* Update the title bar and the multiline cache to match the current buffer. */
|
|
void prepare_for_display(void)
|
|
{
|
|
/* Update the title bar, since the filename may have changed. */
|
|
if (!inhelp)
|
|
titlebar(NULL);
|
|
|
|
#ifdef ENABLE_COLOR
|
|
/* Precalculate the data for any multiline coloring regexes. */
|
|
if (!openfile->filetop->multidata)
|
|
precalc_multicolorinfo();
|
|
have_palette = FALSE;
|
|
#endif
|
|
refresh_needed = TRUE;
|
|
}
|
|
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
/* Show name of current buffer and its number of lines on the status bar. */
|
|
void mention_name_and_linecount(void)
|
|
{
|
|
size_t count = openfile->filebot->lineno -
|
|
(openfile->filebot->data[0] == '\0' ? 1 : 0);
|
|
|
|
#ifndef NANO_TINY
|
|
if (ISSET(MINIBAR)) {
|
|
report_size = TRUE;
|
|
return;
|
|
}
|
|
|
|
if (openfile->fmt > NIX_FILE)
|
|
/* TRANSLATORS: First %s is file name, second %s is file format. */
|
|
statusline(HUSH, P_("%s -- %zu line (%s)", "%s -- %zu lines (%s)", count),
|
|
openfile->filename[0] == '\0' ?
|
|
_("New Buffer") : tail(openfile->filename), count,
|
|
openfile->fmt == DOS_FILE ? _("DOS") : _("Mac"));
|
|
else
|
|
#endif
|
|
statusline(HUSH, P_("%s -- %zu line", "%s -- %zu lines", count),
|
|
openfile->filename[0] == '\0' ?
|
|
_("New Buffer") : tail(openfile->filename), count);
|
|
}
|
|
|
|
/* Update title bar and such after switching to another buffer.*/
|
|
void redecorate_after_switch(void)
|
|
{
|
|
/* If only one file buffer is open, there is nothing to update. */
|
|
if (openfile == openfile->next) {
|
|
statusline(AHEM, _("No more open file buffers"));
|
|
return;
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
/* While in a different buffer, the width of the screen may have changed,
|
|
* so make sure that the starting column for the first row is fitting. */
|
|
ensure_firstcolumn_is_aligned();
|
|
#endif
|
|
|
|
/* Update title bar and multiline info to match the current buffer. */
|
|
prepare_for_display();
|
|
|
|
/* Ensure that the main loop will redraw the help lines. */
|
|
currmenu = MMOST;
|
|
|
|
/* Prevent a possible Shift selection from getting cancelled. */
|
|
shift_held = TRUE;
|
|
|
|
if (openfile->errormessage) {
|
|
statusline(ALERT, openfile->errormessage);
|
|
free(openfile->errormessage);
|
|
openfile->errormessage = NULL;
|
|
} else
|
|
/* Indicate on the status bar where we switched to. */
|
|
mention_name_and_linecount();
|
|
}
|
|
|
|
/* Switch to the previous entry in the circular list of buffers. */
|
|
void switch_to_prev_buffer(void)
|
|
{
|
|
openfile = openfile->prev;
|
|
redecorate_after_switch();
|
|
}
|
|
|
|
/* Switch to the next entry in the circular list of buffers. */
|
|
void switch_to_next_buffer(void)
|
|
{
|
|
openfile = openfile->next;
|
|
redecorate_after_switch();
|
|
}
|
|
|
|
/* Remove the current buffer from the circular list of buffers. */
|
|
void close_buffer(void)
|
|
{
|
|
openfilestruct *orphan = openfile;
|
|
|
|
if (orphan == startfile)
|
|
startfile = startfile->next;
|
|
|
|
orphan->prev->next = orphan->next;
|
|
orphan->next->prev = orphan->prev;
|
|
|
|
free(orphan->filename);
|
|
free_lines(orphan->filetop);
|
|
#ifndef NANO_TINY
|
|
free(orphan->statinfo);
|
|
free(orphan->lock_filename);
|
|
/* Free the undo stack. */
|
|
discard_until(NULL);
|
|
#endif
|
|
free(orphan->errormessage);
|
|
|
|
openfile = orphan->prev;
|
|
if (openfile == orphan)
|
|
openfile = NULL;
|
|
|
|
free(orphan);
|
|
|
|
/* When just one buffer remains open, show "Exit" in the help lines. */
|
|
if (openfile && openfile == openfile->next)
|
|
exitfunc->desc = exit_tag;
|
|
}
|
|
#endif /* ENABLE_MULTIBUFFER */
|
|
|
|
/* Encode any NUL bytes in the given line of text (of the given length),
|
|
* and return a dynamically allocated copy of the resultant string. */
|
|
char *encode_data(char *text, size_t length)
|
|
{
|
|
recode_NUL_to_LF(text, length);
|
|
text[length] = '\0';
|
|
|
|
return copy_of(text);
|
|
}
|
|
|
|
/* The number of bytes by which we expand the line buffer while reading. */
|
|
#define LUMPSIZE 120
|
|
|
|
/* Read the given open file f into the current buffer. filename should be
|
|
* set to the name of the file. undoable means that undo records should be
|
|
* created and that the file does not need to be checked for writability. */
|
|
void read_file(FILE *f, int fd, const char *filename, bool undoable)
|
|
{
|
|
ssize_t was_lineno = openfile->current->lineno;
|
|
/* The line number where we start the insertion. */
|
|
size_t was_leftedge = 0;
|
|
/* The leftedge where we start the insertion. */
|
|
size_t num_lines = 0;
|
|
/* The number of lines in the file. */
|
|
size_t len = 0;
|
|
/* The length of the current line of the file. */
|
|
size_t bufsize = LUMPSIZE;
|
|
/* The size of the line buffer; increased as needed. */
|
|
char *buf = nmalloc(bufsize);
|
|
/* The buffer in which we assemble each line of the file. */
|
|
linestruct *topline;
|
|
/* The top of the new buffer where we store the read file. */
|
|
linestruct *bottomline;
|
|
/* The bottom of the new buffer. */
|
|
int onevalue;
|
|
/* The current value we read from the file, either a byte or EOF. */
|
|
int errornumber;
|
|
/* The error code, in case an error occurred during reading. */
|
|
bool writable = TRUE;
|
|
/* Whether the file is writable (in case we care). */
|
|
#ifndef NANO_TINY
|
|
format_type format = NIX_FILE;
|
|
/* The type of line ending the file uses: Unix, DOS, or Mac. */
|
|
|
|
if (undoable)
|
|
add_undo(INSERT, NULL);
|
|
|
|
if (ISSET(SOFTWRAP))
|
|
was_leftedge = leftedge_for(xplustabs(), openfile->current);
|
|
#endif
|
|
|
|
/* Create an empty buffer. */
|
|
topline = make_new_node(NULL);
|
|
bottomline = topline;
|
|
|
|
#ifndef NANO_TINY
|
|
block_sigwinch(TRUE);
|
|
#endif
|
|
|
|
/* Lock the file before starting to read it, to avoid the overhead
|
|
* of locking it for each single byte that we read from it. */
|
|
flockfile(f);
|
|
|
|
control_C_was_pressed = FALSE;
|
|
|
|
/* Read in the entire file, byte by byte, line by line. */
|
|
while ((onevalue = getc_unlocked(f)) != EOF) {
|
|
char input = (char)onevalue;
|
|
|
|
if (control_C_was_pressed)
|
|
break;
|
|
|
|
/* When the byte before the current one is a CR and automatic format
|
|
* conversion has not been switched off, then strip this CR when it's
|
|
* before a LF OR when the file is in Mac format. Also, when this is
|
|
* the first line break, make a note of the format. */
|
|
if (input == '\n') {
|
|
#ifndef NANO_TINY
|
|
if (len > 0 && buf[len - 1] == '\r' && !ISSET(NO_CONVERT)) {
|
|
if (num_lines == 0)
|
|
format = DOS_FILE;
|
|
len--;
|
|
}
|
|
} else if ((num_lines == 0 || format == MAC_FILE) &&
|
|
len > 0 && buf[len - 1] == '\r' && !ISSET(NO_CONVERT)) {
|
|
format = MAC_FILE;
|
|
len--;
|
|
#endif
|
|
} else {
|
|
/* Store the byte. */
|
|
buf[len] = input;
|
|
|
|
/* Keep track of the total length of the line. It might have
|
|
* NUL bytes in it, so we can't just use strlen() later. */
|
|
len++;
|
|
|
|
/* When needed, increase the line-buffer size. Don't bother
|
|
* decreasing it -- it gets freed when reading is finished. */
|
|
if (len == bufsize) {
|
|
bufsize += LUMPSIZE;
|
|
buf = nrealloc(buf, bufsize);
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
/* Store the data and make a new line. */
|
|
bottomline->data = encode_data(buf, len);
|
|
bottomline->next = make_new_node(bottomline);
|
|
bottomline = bottomline->next;
|
|
num_lines++;
|
|
|
|
/* Reset the length in preparation for the next line. */
|
|
len = 0;
|
|
|
|
#ifndef NANO_TINY
|
|
/* If it was a Mac line, then store the byte after the \r
|
|
* as the first byte of the next line. */
|
|
if (input != '\n')
|
|
buf[len++] = input;
|
|
#endif
|
|
}
|
|
|
|
errornumber = errno;
|
|
|
|
/* We are done with the file, unlock it. */
|
|
funlockfile(f);
|
|
|
|
#ifndef NANO_TINY
|
|
block_sigwinch(FALSE);
|
|
|
|
/* When reading from stdin, restore the terminal and reenter curses mode. */
|
|
if (isendwin()) {
|
|
if (!isatty(STDIN_FILENO))
|
|
reconnect_and_store_state();
|
|
terminal_init();
|
|
doupdate();
|
|
}
|
|
#endif
|
|
|
|
/* If there was a real error during the reading, let the user know. */
|
|
if (ferror(f) && errornumber != EINTR && errornumber != 0)
|
|
statusline(ALERT, strerror(errornumber));
|
|
|
|
if (control_C_was_pressed)
|
|
statusline(ALERT, _("Interrupted"));
|
|
|
|
fclose(f);
|
|
|
|
if (fd > 0 && !undoable && !ISSET(VIEW_MODE))
|
|
writable = (access(filename, W_OK) == 0);
|
|
|
|
/* If the file ended with a newline, or it was entirely empty, make the
|
|
* last line blank. Otherwise, put the last read data in. */
|
|
if (len == 0)
|
|
bottomline->data = copy_of("");
|
|
else {
|
|
#ifndef NANO_TINY
|
|
bool mac_line_needs_newline = FALSE;
|
|
|
|
/* If the final character is a CR and file conversion isn't disabled,
|
|
* strip this CR and indicate that an extra blank line is needed. */
|
|
if (buf[len - 1] == '\r' && !ISSET(NO_CONVERT)) {
|
|
if (num_lines == 0)
|
|
format = MAC_FILE;
|
|
buf[--len] = '\0';
|
|
mac_line_needs_newline = TRUE;
|
|
}
|
|
#endif
|
|
/* Store the data of the final line. */
|
|
bottomline->data = encode_data(buf, len);
|
|
num_lines++;
|
|
|
|
#ifndef NANO_TINY
|
|
if (mac_line_needs_newline) {
|
|
bottomline->next = make_new_node(bottomline);
|
|
bottomline = bottomline->next;
|
|
bottomline->data = copy_of("");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
free(buf);
|
|
|
|
/* Insert the just read buffer into the current one. */
|
|
ingraft_buffer(topline);
|
|
|
|
/* Set the desired x position at the end of what was inserted. */
|
|
openfile->placewewant = xplustabs();
|
|
|
|
if (!writable)
|
|
statusline(ALERT, _("File '%s' is unwritable"), filename);
|
|
#ifndef NANO_TINY
|
|
else if (format == MAC_FILE)
|
|
/* TRANSLATORS: Keep the next three messages at most 78 characters. */
|
|
statusline(HUSH, P_("Read %zu line (Converted from Mac format)",
|
|
"Read %zu lines (Converted from Mac format)",
|
|
num_lines), num_lines);
|
|
else if (format == DOS_FILE)
|
|
statusline(HUSH, P_("Read %zu line (Converted from DOS format)",
|
|
"Read %zu lines (Converted from DOS format)",
|
|
num_lines), num_lines);
|
|
#endif
|
|
else if (!ISSET(ZERO))
|
|
statusline(HUSH, P_("Read %zu line", "Read %zu lines",
|
|
num_lines), num_lines);
|
|
|
|
/* If we inserted less than a screenful, don't center the cursor. */
|
|
if (undoable && less_than_a_screenful(was_lineno, was_leftedge))
|
|
focusing = FALSE;
|
|
#ifdef ENABLE_COLOR
|
|
else if (undoable)
|
|
precalc_multicolorinfo();
|
|
#endif
|
|
|
|
#ifndef NANO_TINY
|
|
if (undoable)
|
|
update_undo(INSERT);
|
|
|
|
if (ISSET(MAKE_IT_UNIX))
|
|
openfile->fmt = NIX_FILE;
|
|
else if (openfile->fmt == UNSPECIFIED)
|
|
openfile->fmt = format;
|
|
#endif
|
|
}
|
|
|
|
/* Open the file with the given name. If the file does not exist, display
|
|
* "New File" if new_one is TRUE, and say "File not found" otherwise.
|
|
* Return 0 if we say "New File", -1 upon failure, and the obtained file
|
|
* descriptor otherwise. The opened filestream is returned in *f. */
|
|
int open_file(const char *filename, bool new_one, FILE **f)
|
|
{
|
|
char *full_filename = get_full_path(filename);
|
|
struct stat fileinfo;
|
|
int fd;
|
|
|
|
/* If the absolute path is unusable (due to some component's permissions),
|
|
* try the given path instead (as it is probably relative). */
|
|
if (full_filename == NULL || stat(full_filename, &fileinfo) == -1)
|
|
full_filename = mallocstrcpy(full_filename, filename);
|
|
|
|
if (stat(full_filename, &fileinfo) == -1) {
|
|
free(full_filename);
|
|
|
|
if (new_one) {
|
|
statusline(REMARK, _("New File"));
|
|
return 0;
|
|
} else {
|
|
statusline(ALERT, _("File \"%s\" not found"), filename);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
if (S_ISFIFO(fileinfo.st_mode))
|
|
statusbar(_("Reading from FIFO..."));
|
|
|
|
block_sigwinch(TRUE);
|
|
install_handler_for_Ctrl_C();
|
|
#endif
|
|
|
|
/* Try opening the file. */
|
|
fd = open(full_filename, O_RDONLY);
|
|
|
|
#ifndef NANO_TINY
|
|
restore_handler_for_Ctrl_C();
|
|
block_sigwinch(FALSE);
|
|
#endif
|
|
|
|
if (fd == -1) {
|
|
if (errno == EINTR || errno == 0)
|
|
statusline(ALERT, _("Interrupted"));
|
|
else
|
|
statusline(ALERT, _("Error reading %s: %s"), filename, strerror(errno));
|
|
} else {
|
|
/* The file is A-OK. Associate a stream with it. */
|
|
*f = fdopen(fd, "rb");
|
|
|
|
if (*f == NULL) {
|
|
statusline(ALERT, _("Error reading %s: %s"), filename, strerror(errno));
|
|
close(fd);
|
|
fd = -1;
|
|
} else if (!ISSET(ZERO))
|
|
statusbar(_("Reading..."));
|
|
}
|
|
|
|
free(full_filename);
|
|
|
|
return fd;
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
size_t wholenamelen= strlen(name) + strlen(suffix);
|
|
unsigned long i = 0;
|
|
char *buf;
|
|
|
|
/* Reserve space for: the name plus the suffix plus a dot plus
|
|
* possibly five digits plus a null byte. */
|
|
buf = nmalloc(wholenamelen + 7);
|
|
sprintf(buf, "%s%s", name, suffix);
|
|
|
|
while (TRUE) {
|
|
struct stat fs;
|
|
|
|
if (stat(buf, &fs) == -1)
|
|
return buf;
|
|
|
|
/* Limit the number of backup files to a hundred thousand. */
|
|
if (++i == 100000)
|
|
break;
|
|
|
|
sprintf(buf + wholenamelen, ".%lu", i);
|
|
}
|
|
|
|
/* There is no possible save file: blank out the filename. */
|
|
*buf = '\0';
|
|
|
|
return buf;
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
static pid_t pid_of_command = -1;
|
|
/* The PID of a forked process -- needed when wanting to abort it. */
|
|
|
|
/* Send an unconditional kill signal to the running external command. */
|
|
void cancel_the_command(int signal)
|
|
{
|
|
kill(pid_of_command, SIGKILL);
|
|
}
|
|
|
|
/* Send the text that starts at the given line to file descriptor fd. */
|
|
void send_data(const linestruct *line, int fd)
|
|
{
|
|
FILE *tube = fdopen(fd, "w");
|
|
|
|
if (tube == NULL)
|
|
exit(4);
|
|
|
|
/* Send each line, except a final empty line. */
|
|
while (line != NULL && (line->next != NULL || line->data[0] != '\0')) {
|
|
fprintf(tube, "%s%s", line->data, line->next == NULL ? "" : "\n");
|
|
line = line->next;
|
|
}
|
|
|
|
fclose(tube);
|
|
}
|
|
|
|
/* Execute the given command in a shell. Return TRUE on success. */
|
|
bool execute_command(const char *command)
|
|
{
|
|
int from_fd[2], to_fd[2];
|
|
/* The pipes through which text will be written and read. */
|
|
struct sigaction oldaction, newaction = {{0}};
|
|
/* Original and temporary handlers for SIGINT. */
|
|
const bool should_pipe = (command[0] == '|');
|
|
FILE *stream;
|
|
|
|
/* Create a pipe to read the command's output from, and, if needed,
|
|
* a pipe to feed the command's input through. */
|
|
if (pipe(from_fd) == -1 || (should_pipe && pipe(to_fd) == -1)) {
|
|
statusline(ALERT, _("Could not create pipe: %s"), strerror(errno));
|
|
return FALSE;
|
|
}
|
|
|
|
/* Fork a child process to run the command in. */
|
|
if ((pid_of_command = fork()) == 0) {
|
|
const char *theshell = getenv("SHELL");
|
|
|
|
if (theshell == NULL)
|
|
theshell = (char *)"/bin/sh";
|
|
|
|
/* Child: close the unused read end of the output pipe. */
|
|
close(from_fd[0]);
|
|
|
|
/* Connect the write end of the output pipe to the process' output streams. */
|
|
if (dup2(from_fd[1], STDOUT_FILENO) < 0)
|
|
exit(3);
|
|
if (dup2(from_fd[1], STDERR_FILENO) < 0)
|
|
exit(4);
|
|
|
|
/* If the parent sends text, connect the read end of the
|
|
* feeding pipe to the child's input stream. */
|
|
if (should_pipe) {
|
|
if (dup2(to_fd[0], STDIN_FILENO) < 0)
|
|
exit(5);
|
|
close(to_fd[1]);
|
|
}
|
|
|
|
/* Run the given command inside the preferred shell. */
|
|
execl(theshell, tail(theshell), "-c", should_pipe ? &command[1] : command, NULL);
|
|
|
|
/* If the exec call returns, there was an error. */
|
|
exit(6);
|
|
}
|
|
|
|
/* Parent: close the unused write end of the pipe. */
|
|
close(from_fd[1]);
|
|
|
|
if (pid_of_command == -1) {
|
|
statusline(ALERT, _("Could not fork: %s"), strerror(errno));
|
|
close(from_fd[0]);
|
|
return FALSE;
|
|
}
|
|
|
|
statusbar(_("Executing..."));
|
|
|
|
/* If the command starts with "|", pipe buffer or region to the command. */
|
|
if (should_pipe) {
|
|
linestruct *was_cutbuffer = cutbuffer;
|
|
bool whole_buffer = FALSE;
|
|
|
|
cutbuffer = NULL;
|
|
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
if (ISSET(MULTIBUFFER)) {
|
|
openfile = openfile->prev;
|
|
if (openfile->mark)
|
|
copy_marked_region();
|
|
else
|
|
whole_buffer = TRUE;
|
|
} else
|
|
#endif
|
|
{
|
|
/* TRANSLATORS: This one goes with Undid/Redid messages. */
|
|
add_undo(COUPLE_BEGIN, N_("filtering"));
|
|
if (openfile->mark == NULL) {
|
|
openfile->current = openfile->filetop;
|
|
openfile->current_x = 0;
|
|
}
|
|
add_undo(CUT, NULL);
|
|
do_snip(openfile->mark != NULL, openfile->mark == NULL, FALSE);
|
|
openfile->filetop->has_anchor = FALSE;
|
|
update_undo(CUT);
|
|
}
|
|
|
|
/* Create a separate process for piping the data to the command. */
|
|
if (fork() == 0) {
|
|
send_data(whole_buffer ? openfile->filetop : cutbuffer, to_fd[1]);
|
|
exit(0);
|
|
}
|
|
|
|
close(to_fd[0]);
|
|
close(to_fd[1]);
|
|
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
if (ISSET(MULTIBUFFER))
|
|
openfile = openfile->next;
|
|
#endif
|
|
free_lines(cutbuffer);
|
|
cutbuffer = was_cutbuffer;
|
|
}
|
|
|
|
/* Re-enable interpretation of the special control keys so that we get
|
|
* SIGINT when Ctrl-C is pressed. */
|
|
enable_kb_interrupt();
|
|
|
|
/* Set up a signal handler so that ^C will terminate the forked process. */
|
|
newaction.sa_handler = cancel_the_command;
|
|
newaction.sa_flags = 0;
|
|
sigaction(SIGINT, &newaction, &oldaction);
|
|
|
|
stream = fdopen(from_fd[0], "rb");
|
|
if (stream == NULL)
|
|
statusline(ALERT, _("Failed to open pipe: %s"), strerror(errno));
|
|
else
|
|
read_file(stream, 0, "pipe", TRUE);
|
|
|
|
if (should_pipe && !ISSET(MULTIBUFFER))
|
|
add_undo(COUPLE_END, N_("filtering"));
|
|
|
|
/* Wait for the external command (and possibly data sender) to terminate. */
|
|
wait(NULL);
|
|
if (should_pipe)
|
|
wait(NULL);
|
|
|
|
/* Restore the original handler for SIGINT. */
|
|
sigaction(SIGINT, &oldaction, NULL);
|
|
|
|
/* Restore the terminal to its desired state, and disable
|
|
* interpretation of the special control keys again. */
|
|
terminal_init();
|
|
|
|
return TRUE;
|
|
}
|
|
#endif /* NANO_TINY */
|
|
|
|
/* Insert a file into the current buffer (or into a new buffer). But when
|
|
* execute is TRUE, run a command in the shell and insert its output into
|
|
* the buffer, or just run one of the tools listed in the help lines. */
|
|
void insert_a_file_or(bool execute)
|
|
{
|
|
int response;
|
|
const char *msg;
|
|
char *given = copy_of("");
|
|
/* The last answer the user typed at the status-bar prompt. */
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
bool was_multibuffer = ISSET(MULTIBUFFER);
|
|
#endif
|
|
|
|
/* Display newlines in filenames as ^J. */
|
|
as_an_at = FALSE;
|
|
|
|
/* Reset the flag that is set by the Spell Checker and Linter and such. */
|
|
ran_a_tool = FALSE;
|
|
|
|
while (TRUE) {
|
|
#ifndef NANO_TINY
|
|
if (execute) {
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
if (ISSET(MULTIBUFFER))
|
|
/* TRANSLATORS: The next six messages are prompts. */
|
|
msg = _("Command to execute in new buffer");
|
|
else
|
|
#endif
|
|
msg = _("Command to execute");
|
|
} else
|
|
#endif
|
|
{
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
if (ISSET(MULTIBUFFER))
|
|
#ifndef NANO_TINY
|
|
if ISSET(NO_CONVERT)
|
|
msg = _("File to read unconverted into new buffer [from %s]");
|
|
else
|
|
#endif
|
|
msg = _("File to read into new buffer [from %s]");
|
|
else
|
|
#endif
|
|
#ifndef NANO_TINY
|
|
if ISSET(NO_CONVERT)
|
|
msg = _("File to insert unconverted [from %s]");
|
|
else
|
|
#endif
|
|
msg = _("File to insert [from %s]");
|
|
}
|
|
|
|
present_path = mallocstrcpy(present_path, "./");
|
|
|
|
response = do_prompt(execute ? MEXECUTE : MINSERTFILE, given,
|
|
execute ? &execute_history : NULL,
|
|
edit_refresh, msg,
|
|
#ifdef ENABLE_OPERATINGDIR
|
|
operating_dir != NULL ? operating_dir :
|
|
#endif
|
|
"./");
|
|
|
|
/* If we're in multibuffer mode and the filename or command is
|
|
* blank, open a new buffer instead of canceling. */
|
|
if (response == -1 || (response == -2 && !ISSET(MULTIBUFFER))) {
|
|
statusbar(_("Cancelled"));
|
|
break;
|
|
} else {
|
|
ssize_t was_current_lineno = openfile->current->lineno;
|
|
size_t was_current_x = openfile->current_x;
|
|
#if !defined(NANO_TINY) || defined(ENABLE_BROWSER) || defined(ENABLE_MULTIBUFFER)
|
|
functionptrtype func = func_from_key(&response);
|
|
#endif
|
|
given = mallocstrcpy(given, answer);
|
|
|
|
if (ran_a_tool)
|
|
break;
|
|
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
if (func == flip_newbuffer) {
|
|
/* Allow toggling only when not in view mode. */
|
|
if (!ISSET(VIEW_MODE))
|
|
TOGGLE(MULTIBUFFER);
|
|
else
|
|
beep();
|
|
continue;
|
|
}
|
|
#endif
|
|
#ifndef NANO_TINY
|
|
if (func == flip_convert) {
|
|
TOGGLE(NO_CONVERT);
|
|
continue;
|
|
}
|
|
if (func == flip_execute) {
|
|
execute = !execute;
|
|
continue;
|
|
}
|
|
if (func == flip_pipe) {
|
|
add_or_remove_pipe_symbol_from_answer();
|
|
given = mallocstrcpy(given, answer);
|
|
continue;
|
|
}
|
|
#endif
|
|
#ifdef ENABLE_BROWSER
|
|
if (func == to_files) {
|
|
char *chosen = browse_in(answer);
|
|
|
|
/* If no file was chosen, go back to the prompt. */
|
|
if (chosen == NULL)
|
|
continue;
|
|
|
|
free(answer);
|
|
answer = chosen;
|
|
response = 0;
|
|
}
|
|
#endif
|
|
/* If we don't have a file yet, go back to the prompt. */
|
|
if (response != 0 && (!ISSET(MULTIBUFFER) || response != -2))
|
|
continue;
|
|
|
|
#ifndef NANO_TINY
|
|
if (execute) {
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
/* When in multibuffer mode, first open a blank buffer. */
|
|
if (ISSET(MULTIBUFFER))
|
|
open_buffer("", TRUE);
|
|
#endif
|
|
/* If the command is not empty, execute it and read its output
|
|
* into the buffer, and add the command to the history list. */
|
|
if (*answer != '\0') {
|
|
execute_command(answer);
|
|
#ifdef ENABLE_HISTORIES
|
|
update_history(&execute_history, answer, PRUNE_DUPLICATE);
|
|
#endif
|
|
}
|
|
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
/* If this is a new buffer, put the cursor at the top. */
|
|
if (ISSET(MULTIBUFFER)) {
|
|
openfile->current = openfile->filetop;
|
|
openfile->current_x = 0;
|
|
openfile->placewewant = 0;
|
|
|
|
set_modified();
|
|
}
|
|
#endif
|
|
} else
|
|
#endif /* !NANO_TINY */
|
|
{
|
|
/* Make sure the specified path is tilde-expanded. */
|
|
answer = free_and_assign(answer, real_dir_from_tilde(answer));
|
|
|
|
/* Read the file into a new buffer or into current buffer. */
|
|
open_buffer(answer, ISSET(MULTIBUFFER));
|
|
}
|
|
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
if (ISSET(MULTIBUFFER)) {
|
|
#ifdef ENABLE_HISTORIES
|
|
if (ISSET(POSITIONLOG)) {
|
|
ssize_t priorline, priorcol;
|
|
#ifndef NANO_TINY
|
|
if (!execute)
|
|
#endif
|
|
if (has_old_position(answer, &priorline, &priorcol))
|
|
goto_line_and_column(priorline, priorcol, FALSE, FALSE);
|
|
}
|
|
#endif
|
|
/* Update title bar and color info for this new buffer. */
|
|
prepare_for_display();
|
|
} else
|
|
#endif /* ENABLE_MULTIBUFFER */
|
|
{
|
|
/* If the buffer actually changed, mark it as modified. */
|
|
if (openfile->current->lineno != was_current_lineno ||
|
|
openfile->current_x != was_current_x)
|
|
set_modified();
|
|
|
|
refresh_needed = TRUE;
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
free(given);
|
|
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
if (was_multibuffer)
|
|
SET(MULTIBUFFER);
|
|
else
|
|
UNSET(MULTIBUFFER);
|
|
#endif
|
|
}
|
|
|
|
/* If the current mode of operation allows it, go insert a file. */
|
|
void do_insertfile(void)
|
|
{
|
|
if (!in_restricted_mode())
|
|
insert_a_file_or(FALSE);
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
/* If the current mode of operation allows it, go prompt for a command. */
|
|
void do_execute(void)
|
|
{
|
|
if (!in_restricted_mode())
|
|
insert_a_file_or(TRUE);
|
|
}
|
|
#endif
|
|
|
|
/* For the given bare path (or path plus filename), return the canonical,
|
|
* absolute path (plus filename) when the path exists, and NULL when not. */
|
|
char *get_full_path(const char *origpath)
|
|
{
|
|
char *allocation, *here, *target, *last_slash;
|
|
char *just_filename = NULL;
|
|
int attempts = 0;
|
|
struct stat fileinfo;
|
|
bool path_only;
|
|
|
|
if (origpath == NULL)
|
|
return NULL;
|
|
|
|
allocation = nmalloc(PATH_MAX + 1);
|
|
here = getcwd(allocation, PATH_MAX + 1);
|
|
|
|
/* If getting the current directory failed, go up one level and try again,
|
|
* until we find an existing directory, and use that as the current one. */
|
|
while (here == NULL && attempts < 20) {
|
|
IGNORE_CALL_RESULT(chdir(".."));
|
|
here = getcwd(allocation, PATH_MAX + 1);
|
|
attempts++;
|
|
}
|
|
|
|
/* If we found a directory, make sure its path ends in a slash. */
|
|
if (here != NULL) {
|
|
if (strcmp(here, "/") != 0) {
|
|
here = nrealloc(here, strlen(here) + 2);
|
|
strcat(here, "/");
|
|
}
|
|
} else {
|
|
here = copy_of("");
|
|
free(allocation);
|
|
}
|
|
|
|
target = real_dir_from_tilde(origpath);
|
|
|
|
/* Determine whether the target path refers to a directory. If statting
|
|
* target fails, however, assume that it refers to a new, unsaved buffer. */
|
|
path_only = (stat(target, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode));
|
|
|
|
/* If the target is a directory, make sure its path ends in a slash. */
|
|
if (path_only) {
|
|
size_t length = strlen(target);
|
|
|
|
if (target[length - 1] != '/') {
|
|
target = nrealloc(target, length + 2);
|
|
strcat(target, "/");
|
|
}
|
|
}
|
|
|
|
last_slash = strrchr(target, '/');
|
|
|
|
/* If the target path does not contain a slash, then it is a bare filename
|
|
* and must therefore be located in the working directory. */
|
|
if (last_slash == NULL) {
|
|
just_filename = target;
|
|
target = here;
|
|
} else {
|
|
/* If target contains a filename, separate the two. */
|
|
if (!path_only) {
|
|
just_filename = copy_of(last_slash + 1);
|
|
*(last_slash + 1) = '\0';
|
|
}
|
|
|
|
/* If we can't change to the target directory, give up. Otherwise,
|
|
* get the canonical path to this target directory. */
|
|
if (chdir(target) == -1) {
|
|
free(target);
|
|
target = NULL;
|
|
} else {
|
|
free(target);
|
|
|
|
allocation = nmalloc(PATH_MAX + 1);
|
|
target = getcwd(allocation, PATH_MAX + 1);
|
|
|
|
/* If we got a result, make sure it ends in a slash.
|
|
* Otherwise, ensure that we return NULL. */
|
|
if (target != NULL) {
|
|
if (strcmp(target, "/") != 0) {
|
|
target = nrealloc(target, strlen(target) + 2);
|
|
strcat(target, "/");
|
|
}
|
|
} else {
|
|
path_only = TRUE;
|
|
free(allocation);
|
|
}
|
|
|
|
/* Finally, go back to where we were before. We don't check
|
|
* for an error, since we can't do anything if we get one. */
|
|
IGNORE_CALL_RESULT(chdir(here));
|
|
}
|
|
|
|
free(here);
|
|
}
|
|
|
|
/* If we were given more than a bare path, concatenate the target path
|
|
* with the filename portion to get the full, absolute file path. */
|
|
if (!path_only && target != NULL) {
|
|
target = nrealloc(target, strlen(target) + strlen(just_filename) + 1);
|
|
strcat(target, just_filename);
|
|
}
|
|
|
|
free(just_filename);
|
|
|
|
return target;
|
|
}
|
|
|
|
/* Check whether the given path refers to a directory that is writable.
|
|
* Return the absolute form of the path on success, and NULL on failure. */
|
|
char *check_writable_directory(const char *path)
|
|
{
|
|
char *full_path = get_full_path(path);
|
|
|
|
if (full_path == NULL)
|
|
return NULL;
|
|
|
|
if (full_path[strlen(full_path) - 1] != '/' || access(full_path, W_OK) != 0) {
|
|
free(full_path);
|
|
return NULL;
|
|
}
|
|
|
|
return full_path;
|
|
}
|
|
|
|
/* Create, safely, a temporary file in the standard temp directory.
|
|
* On success, return the malloc()ed filename, plus the corresponding
|
|
* file stream opened in read-write mode. On error, return NULL. */
|
|
char *safe_tempfile(FILE **stream)
|
|
{
|
|
const char *env_dir = getenv("TMPDIR");
|
|
char *tempdir = NULL, *tempfile_name = NULL;
|
|
char *extension;
|
|
int descriptor;
|
|
|
|
/* Get the absolute path for the first directory among $TMPDIR
|
|
* and P_tmpdir that is writable, otherwise use /tmp/. */
|
|
if (env_dir != NULL)
|
|
tempdir = check_writable_directory(env_dir);
|
|
|
|
if (tempdir == NULL)
|
|
tempdir = check_writable_directory(P_tmpdir);
|
|
|
|
if (tempdir == NULL)
|
|
tempdir = copy_of("/tmp/");
|
|
|
|
extension = strrchr(openfile->filename, '.');
|
|
|
|
if (!extension || strchr(extension, '/'))
|
|
extension = openfile->filename + strlen(openfile->filename);
|
|
|
|
tempfile_name = nrealloc(tempdir, strlen(tempdir) + 12 + strlen(extension));
|
|
strcat(tempfile_name, "nano.XXXXXX");
|
|
strcat(tempfile_name, extension);
|
|
|
|
descriptor = mkstemps(tempfile_name, strlen(extension));
|
|
|
|
*stream = (descriptor > 0) ? fdopen(descriptor, "r+b") : NULL;
|
|
|
|
if (*stream == NULL) {
|
|
if (descriptor > 0)
|
|
close(descriptor);
|
|
free(tempfile_name);
|
|
return NULL;
|
|
}
|
|
|
|
return tempfile_name;
|
|
}
|
|
|
|
#ifdef ENABLE_OPERATINGDIR
|
|
/* Change to the specified operating directory, when it's valid. */
|
|
void init_operating_dir(void)
|
|
{
|
|
char *target = get_full_path(operating_dir);
|
|
|
|
/* If the operating directory is inaccessible, fail. */
|
|
if (target == NULL || chdir(target) == -1)
|
|
die(_("Invalid operating directory: %s\n"), operating_dir);
|
|
|
|
free(operating_dir);
|
|
operating_dir = nrealloc(target, strlen(target) + 1);
|
|
}
|
|
|
|
/* Check whether the given path is outside of the operating directory.
|
|
* Return TRUE if it is, and FALSE otherwise. If tabbing is TRUE,
|
|
* incomplete names that can grow into matches for the operating directory
|
|
* are considered to be inside, so that tab completion will work. */
|
|
bool outside_of_confinement(const char *somepath, bool tabbing)
|
|
{
|
|
bool is_inside, begins_to_be;
|
|
char *fullpath;
|
|
|
|
/* If no operating directory is set, there is nothing to check. */
|
|
if (operating_dir == NULL)
|
|
return FALSE;
|
|
|
|
fullpath = get_full_path(somepath);
|
|
|
|
/* When we can't get an absolute path, it means some directory in the path
|
|
* doesn't exist or is unreadable. When not doing tab completion, somepath
|
|
* 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.
|
|
* When the user is doing tab completion, then somepath exists but is not
|
|
* executable. So we say it is outside the operating directory. */
|
|
if (fullpath == NULL)
|
|
return tabbing;
|
|
|
|
is_inside = (strstr(fullpath, operating_dir) == fullpath);
|
|
begins_to_be = (tabbing && strstr(operating_dir, fullpath) == operating_dir);
|
|
|
|
free(fullpath);
|
|
|
|
return (!is_inside && !begins_to_be);
|
|
}
|
|
#endif
|
|
|
|
#ifndef NANO_TINY
|
|
/* Transform the specified backup directory to an absolute path,
|
|
* and verify that it is usable. */
|
|
void init_backup_dir(void)
|
|
{
|
|
char *target = get_full_path(backup_dir);
|
|
|
|
/* If we can't get an absolute path (which means it doesn't exist or
|
|
* isn't accessible), or it's not a directory, fail. */
|
|
if (target == NULL || target[strlen(target) - 1] != '/')
|
|
die(_("Invalid backup directory: %s\n"), backup_dir);
|
|
|
|
free(backup_dir);
|
|
backup_dir = nrealloc(target, strlen(target) + 1);
|
|
}
|
|
#endif
|
|
|
|
/* Read all data from inn, and write it to out. File inn must be open for
|
|
* reading, and out for writing. Return 0 on success, a negative number on
|
|
* read error, and a positive number on write error. File inn is always
|
|
* closed by this function, out is closed only if close_out is true. */
|
|
int copy_file(FILE *inn, FILE *out, bool close_out)
|
|
{
|
|
int retval = 0;
|
|
char buf[BUFSIZ];
|
|
size_t charsread;
|
|
int (*flush_out_fnc)(FILE *) = (close_out) ? fclose : fflush;
|
|
|
|
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 = -3;
|
|
if (flush_out_fnc(out) == EOF)
|
|
retval = 4;
|
|
|
|
return retval;
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
/* Create a backup of an existing file. If the user did not request backups,
|
|
* make a temporary one (trying first in the directory of the original file,
|
|
* then in the user's home directory). Return TRUE if the save can proceed. */
|
|
bool make_backup_of(char *realname)
|
|
{
|
|
FILE *original = NULL, *backup_file = NULL;
|
|
static struct timespec filetime[2];
|
|
int creation_flags, descriptor;
|
|
bool second_attempt = FALSE;
|
|
char *backupname = NULL;
|
|
int verdict = 0;
|
|
|
|
/* Remember the original file's access and modification times. */
|
|
filetime[0].tv_sec = openfile->statinfo->st_atime;
|
|
filetime[1].tv_sec = openfile->statinfo->st_mtime;
|
|
|
|
statusbar(_("Making backup..."));
|
|
|
|
/* If no backup directory was specified, we make a simple backup
|
|
* by appending a tilde to the original file name. Otherwise,
|
|
* we create a numbered backup in the specified directory. */
|
|
if (backup_dir == NULL) {
|
|
backupname = nmalloc(strlen(realname) + 2);
|
|
sprintf(backupname, "%s~", realname);
|
|
} else {
|
|
char *thename = get_full_path(realname);
|
|
|
|
/* If we have a valid absolute path, replace each slash
|
|
* in this full path with an exclamation mark. Otherwise,
|
|
* just use the file-name portion of the given path. */
|
|
if (thename) {
|
|
for (int i = 0; thename[i] != '\0'; i++)
|
|
if (thename[i] == '/')
|
|
thename[i] = '!';
|
|
} else
|
|
thename = copy_of(tail(realname));
|
|
|
|
backupname = nmalloc(strlen(backup_dir) + strlen(thename) + 1);
|
|
sprintf(backupname, "%s%s", backup_dir, thename);
|
|
free(thename);
|
|
|
|
thename = get_next_filename(backupname, "~");
|
|
free(backupname);
|
|
backupname = thename;
|
|
|
|
/* If all numbered backup names are taken, the user must
|
|
* be fond of backups. Thus, without one, do not go on. */
|
|
if (*backupname == '\0') {
|
|
statusline(ALERT, _("Too many existing backup files"));
|
|
free(backupname);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* Now first try to delete an existing backup file. */
|
|
if (unlink(backupname) < 0 && errno != ENOENT && !ISSET(INSECURE_BACKUP))
|
|
goto problem;
|
|
|
|
creation_flags = O_WRONLY|O_CREAT|(ISSET(INSECURE_BACKUP) ? O_TRUNC : O_EXCL);
|
|
|
|
/* Create the backup file (or truncate the existing one). */
|
|
descriptor = open(backupname, creation_flags, S_IRUSR|S_IWUSR);
|
|
|
|
retry:
|
|
if (descriptor >= 0)
|
|
backup_file = fdopen(descriptor, "wb");
|
|
|
|
if (backup_file == NULL)
|
|
goto problem;
|
|
|
|
/* Try to change owner and group to those of the original file;
|
|
* ignore permission errors, as a normal user cannot change the owner. */
|
|
if (fchown(descriptor, openfile->statinfo->st_uid,
|
|
openfile->statinfo->st_gid) < 0 && errno != EPERM) {
|
|
fclose(backup_file);
|
|
goto problem;
|
|
}
|
|
|
|
/* Set the backup's permissions to those of the original file.
|
|
* It is not a security issue if this fails, as we have created
|
|
* the file with just read and write permission for the owner. */
|
|
if (fchmod(descriptor, openfile->statinfo->st_mode) < 0 && errno != EPERM) {
|
|
fclose(backup_file);
|
|
goto problem;
|
|
}
|
|
|
|
original = fopen(realname, "rb");
|
|
|
|
/* If opening succeeded, copy the existing file to the backup. */
|
|
if (original != NULL)
|
|
verdict = copy_file(original, backup_file, FALSE);
|
|
|
|
if (original == NULL || verdict < 0) {
|
|
warn_and_briefly_pause(_("Cannot read original file"));
|
|
fclose(backup_file);
|
|
goto failure;
|
|
} else if (verdict > 0) {
|
|
fclose(backup_file);
|
|
goto problem;
|
|
}
|
|
|
|
/* Since this backup is a newly created file, explicitly sync it to
|
|
* permanent storage before starting to write out the actual file. */
|
|
if (fflush(backup_file) != 0 || fsync(fileno(backup_file)) != 0) {
|
|
fclose(backup_file);
|
|
goto problem;
|
|
}
|
|
|
|
/* Set the backup's timestamps to those of the original file.
|
|
* Failure is unimportant: saving the file apparently worked. */
|
|
IGNORE_CALL_RESULT(futimens(descriptor, filetime));
|
|
|
|
if (fclose(backup_file) == 0) {
|
|
free(backupname);
|
|
return TRUE;
|
|
}
|
|
|
|
problem:
|
|
get_homedir();
|
|
|
|
/* If the first attempt of copying the file failed, try again to HOME. */
|
|
if (!second_attempt && homedir) {
|
|
unlink(backupname);
|
|
free(backupname);
|
|
|
|
warn_and_briefly_pause(_("Cannot make regular backup"));
|
|
warn_and_briefly_pause(_("Trying again in your home directory"));
|
|
currmenu = MMOST;
|
|
|
|
backupname = nmalloc(strlen(homedir) + strlen(tail(realname)) + 9);
|
|
sprintf(backupname, "%s/%s~XXXXXX", homedir, tail(realname));
|
|
|
|
descriptor = mkstemp(backupname);
|
|
backup_file = NULL;
|
|
|
|
second_attempt = TRUE;
|
|
goto retry;
|
|
} else
|
|
warn_and_briefly_pause(_("Cannot make backup"));
|
|
|
|
failure:
|
|
warn_and_briefly_pause(strerror(errno));
|
|
currmenu = MMOST;
|
|
free(backupname);
|
|
|
|
/* If both attempts failed, and it isn't because of lack of disk space,
|
|
* ask the user what to do, because if something goes wrong during the
|
|
* save of the file itself, its contents may be lost. */
|
|
/* TRANSLATORS: Try to keep this message at most 76 characters. */
|
|
if (errno != ENOSPC && do_yesno_prompt(FALSE, _("Cannot make backup; "
|
|
"continue and save actual file? ")) == 1)
|
|
return TRUE;
|
|
|
|
/* TRANSLATORS: The %s is the reason of failure. */
|
|
statusline(HUSH, _("Cannot make backup: %s"), strerror(errno));
|
|
return FALSE;
|
|
}
|
|
#endif /* !NANO_TINY */
|
|
|
|
/* Write the current buffer to disk. If thefile isn't NULL, we write to a
|
|
* temporary file that is already open. If normal is FALSE (for a spellcheck
|
|
* or an emergency save, for example), we don't make a backup and don't give
|
|
* feedback. If method is APPEND or PREPEND, it means we will be appending
|
|
* or prepending instead of overwriting the given file. If annotate is TRUE
|
|
* and when writing a normal file, we set the current filename and stat info.
|
|
* Return TRUE on success, and FALSE otherwise. */
|
|
bool write_file(const char *name, FILE *thefile, bool normal,
|
|
kind_of_writing_type method, bool annotate)
|
|
{
|
|
#ifndef NANO_TINY
|
|
bool is_existing_file;
|
|
/* Becomes TRUE when the file is non-temporary and exists. */
|
|
struct stat fileinfo;
|
|
/* The status fields filled in by statting the file. */
|
|
#endif
|
|
char *realname = real_dir_from_tilde(name);
|
|
/* The filename after tilde expansion. */
|
|
char *tempname = NULL;
|
|
/* The name of the temporary file we use when prepending. */
|
|
linestruct *line = openfile->filetop;
|
|
/* An iterator for moving through the lines of the buffer. */
|
|
size_t lineswritten = 0;
|
|
/* The number of lines written, for feedback on the status bar. */
|
|
|
|
#ifdef ENABLE_OPERATINGDIR
|
|
/* If we're writing a temporary file, we're probably going outside
|
|
* the operating directory, so skip the operating directory test. */
|
|
if (normal && outside_of_confinement(realname, FALSE)) {
|
|
statusline(ALERT, _("Can't write outside of %s"), operating_dir);
|
|
goto cleanup_and_exit;
|
|
}
|
|
#endif
|
|
#ifndef NANO_TINY
|
|
/* Check whether the file (at the end of the symlink) exists. */
|
|
is_existing_file = normal && (stat(realname, &fileinfo) != -1);
|
|
|
|
/* If we haven't statted this file before (say, the user just specified
|
|
* it interactively), stat and save the value now, or else we will chase
|
|
* null pointers when we do modtime checks and such during backup. */
|
|
if (openfile->statinfo == NULL && is_existing_file)
|
|
stat_with_alloc(realname, &openfile->statinfo);
|
|
|
|
/* When the user requested a backup, we do this only if the file exists and
|
|
* isn't temporary AND the file has not been modified by someone else since
|
|
* we opened it (or we are appending/prepending or writing a selection). */
|
|
if (ISSET(MAKE_BACKUP) && is_existing_file && !S_ISFIFO(fileinfo.st_mode) &&
|
|
openfile->statinfo &&
|
|
(openfile->statinfo->st_mtime == fileinfo.st_mtime ||
|
|
method != OVERWRITE || openfile->mark)) {
|
|
if (!make_backup_of(realname))
|
|
goto cleanup_and_exit;
|
|
}
|
|
|
|
/* When prepending, first copy the existing file to a temporary file. */
|
|
if (method == PREPEND) {
|
|
FILE *source = NULL;
|
|
FILE *target = NULL;
|
|
int verdict;
|
|
|
|
if (is_existing_file && S_ISFIFO(fileinfo.st_mode)) {
|
|
statusline(ALERT, _("Error writing %s: %s"), realname, "FIFO");
|
|
goto cleanup_and_exit;
|
|
}
|
|
|
|
source = fopen(realname, "rb");
|
|
|
|
if (source == NULL) {
|
|
statusline(ALERT, _("Error reading %s: %s"), realname, strerror(errno));
|
|
goto cleanup_and_exit;
|
|
}
|
|
|
|
tempname = safe_tempfile(&target);
|
|
|
|
if (tempname == NULL) {
|
|
statusline(ALERT, _("Error writing temp file: %s"), strerror(errno));
|
|
fclose(source);
|
|
goto cleanup_and_exit;
|
|
}
|
|
|
|
verdict = copy_file(source, target, TRUE);
|
|
|
|
if (verdict < 0) {
|
|
statusline(ALERT, _("Error reading %s: %s"), realname, strerror(errno));
|
|
unlink(tempname);
|
|
goto cleanup_and_exit;
|
|
} else if (verdict > 0) {
|
|
statusline(ALERT, _("Error writing temp file: %s"), strerror(errno));
|
|
unlink(tempname);
|
|
goto cleanup_and_exit;
|
|
}
|
|
}
|
|
|
|
if (is_existing_file && S_ISFIFO(fileinfo.st_mode))
|
|
statusbar(_("Writing to FIFO..."));
|
|
#endif /* !NANO_TINY */
|
|
|
|
/* When it's not a temporary file, this is where we open or create it.
|
|
* For an emergency file, access is restricted to just the owner. */
|
|
if (thefile == NULL) {
|
|
mode_t permissions = (normal ? RW_FOR_ALL : S_IRUSR|S_IWUSR);
|
|
int fd;
|
|
|
|
#ifndef NANO_TINY
|
|
block_sigwinch(TRUE);
|
|
if (normal)
|
|
install_handler_for_Ctrl_C();
|
|
#endif
|
|
|
|
/* Now open the file. Use O_EXCL for an emergency file. */
|
|
fd = open(realname, O_WRONLY | O_CREAT | ((method == APPEND) ?
|
|
O_APPEND : (normal ? O_TRUNC : O_EXCL)), permissions);
|
|
|
|
#ifndef NANO_TINY
|
|
if (normal)
|
|
restore_handler_for_Ctrl_C();
|
|
block_sigwinch(FALSE);
|
|
#endif
|
|
|
|
/* If we couldn't open the file, give up. */
|
|
if (fd == -1) {
|
|
if (errno == EINTR || errno == 0)
|
|
statusline(ALERT, _("Interrupted"));
|
|
else
|
|
statusline(ALERT, _("Error writing %s: %s"), realname, strerror(errno));
|
|
#ifndef NANO_TINY
|
|
if (tempname != NULL)
|
|
unlink(tempname);
|
|
#endif
|
|
goto cleanup_and_exit;
|
|
}
|
|
|
|
thefile = fdopen(fd, (method == APPEND) ? "ab" : "wb");
|
|
|
|
if (thefile == NULL) {
|
|
statusline(ALERT, _("Error writing %s: %s"), realname, strerror(errno));
|
|
close(fd);
|
|
goto cleanup_and_exit;
|
|
}
|
|
}
|
|
|
|
if (normal)
|
|
statusbar(_("Writing..."));
|
|
|
|
while (TRUE) {
|
|
size_t data_len = strlen(line->data);
|
|
size_t wrote;
|
|
|
|
/* Decode LFs as the NULs that they are, before writing to disk. */
|
|
recode_LF_to_NUL(line->data);
|
|
|
|
wrote = fwrite(line->data, sizeof(char), data_len, thefile);
|
|
|
|
/* Re-encode any embedded NULs as LFs. */
|
|
recode_NUL_to_LF(line->data, data_len);
|
|
|
|
if (wrote < data_len) {
|
|
statusline(ALERT, _("Error writing %s: %s"), realname, strerror(errno));
|
|
fclose(thefile);
|
|
goto cleanup_and_exit;
|
|
}
|
|
|
|
/* If we've reached the last line of the buffer, don't write a newline
|
|
* character after it. If this last line is empty, it means zero bytes
|
|
* are written for it, and we don't count it in the number of lines. */
|
|
if (line->next == NULL) {
|
|
if (line->data[0] != '\0')
|
|
lineswritten++;
|
|
break;
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
if (openfile->fmt == DOS_FILE || openfile->fmt == MAC_FILE) {
|
|
if (putc('\r', thefile) == EOF) {
|
|
statusline(ALERT, _("Error writing %s: %s"), realname, strerror(errno));
|
|
fclose(thefile);
|
|
goto cleanup_and_exit;
|
|
}
|
|
}
|
|
|
|
if (openfile->fmt != MAC_FILE)
|
|
#endif
|
|
if (putc('\n', thefile) == EOF) {
|
|
statusline(ALERT, _("Error writing %s: %s"), realname, strerror(errno));
|
|
fclose(thefile);
|
|
goto cleanup_and_exit;
|
|
}
|
|
|
|
line = line->next;
|
|
lineswritten++;
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
/* When prepending, append the temporary file to what we wrote above. */
|
|
if (method == PREPEND) {
|
|
FILE *source = fopen(tempname, "rb");
|
|
int verdict;
|
|
|
|
if (source == NULL) {
|
|
statusline(ALERT, _("Error reading temp file: %s"), strerror(errno));
|
|
fclose(thefile);
|
|
goto cleanup_and_exit;
|
|
}
|
|
|
|
verdict = copy_file(source, thefile, FALSE);
|
|
|
|
if (verdict < 0) {
|
|
statusline(ALERT, _("Error reading temp file: %s"), strerror(errno));
|
|
fclose(thefile);
|
|
goto cleanup_and_exit;
|
|
} else if (verdict > 0) {
|
|
statusline(ALERT, _("Error writing %s: %s"), realname, strerror(errno));
|
|
fclose(thefile);
|
|
goto cleanup_and_exit;
|
|
}
|
|
|
|
unlink(tempname);
|
|
}
|
|
|
|
if (!is_existing_file || !S_ISFIFO(fileinfo.st_mode))
|
|
/* Ensure the data has reached the disk before reporting it as written. */
|
|
if (fflush(thefile) != 0 || fsync(fileno(thefile)) != 0) {
|
|
statusline(ALERT, _("Error writing %s: %s"), realname, strerror(errno));
|
|
fclose(thefile);
|
|
goto cleanup_and_exit;
|
|
}
|
|
#endif
|
|
|
|
if (fclose(thefile) != 0) {
|
|
statusline(ALERT, _("Error writing %s: %s"), realname, strerror(errno));
|
|
|
|
cleanup_and_exit:
|
|
free(tempname);
|
|
free(realname);
|
|
return FALSE;
|
|
}
|
|
|
|
/* When having written an entire buffer, update some administrivia. */
|
|
if (annotate && method == OVERWRITE) {
|
|
/* If the filename was changed, write a new lockfile when needed,
|
|
* and check whether it means a different syntax gets used. */
|
|
if (strcmp(openfile->filename, realname) != 0) {
|
|
#ifndef NANO_TINY
|
|
if (openfile->lock_filename != NULL) {
|
|
delete_lockfile(openfile->lock_filename);
|
|
free(openfile->lock_filename);
|
|
}
|
|
|
|
if (ISSET(LOCKING))
|
|
openfile->lock_filename = do_lockfile(realname, FALSE);
|
|
#endif
|
|
openfile->filename = mallocstrcpy(openfile->filename, realname);
|
|
#ifdef ENABLE_COLOR
|
|
const char *oldname, *newname;
|
|
|
|
oldname = openfile->syntax ? openfile->syntax->name : "";
|
|
find_and_prime_applicable_syntax();
|
|
newname = openfile->syntax ? openfile->syntax->name : "";
|
|
|
|
/* If the syntax changed, discard and recompute the multidata. */
|
|
if (strcmp(oldname, newname) != 0) {
|
|
for (line = openfile->filetop; line != NULL; line = line->next) {
|
|
free(line->multidata);
|
|
line->multidata = NULL;
|
|
}
|
|
|
|
precalc_multicolorinfo();
|
|
have_palette = FALSE;
|
|
refresh_needed = TRUE;
|
|
}
|
|
#endif
|
|
}
|
|
#ifndef NANO_TINY
|
|
/* Get or update the stat info to reflect the current state. */
|
|
stat_with_alloc(realname, &openfile->statinfo);
|
|
|
|
/* Record at which point in the undo stack the buffer was saved. */
|
|
openfile->last_saved = openfile->current_undo;
|
|
openfile->last_action = OTHER;
|
|
#endif
|
|
openfile->modified = FALSE;
|
|
titlebar(NULL);
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
if (ISSET(MINIBAR) && !ISSET(ZERO) && LINES > 1 && annotate)
|
|
report_size = TRUE;
|
|
else
|
|
#endif
|
|
if (normal)
|
|
statusline(REMARK, P_("Wrote %zu line", "Wrote %zu lines",
|
|
lineswritten), lineswritten);
|
|
|
|
free(tempname);
|
|
free(realname);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
/* Write the marked region of the current buffer out to disk.
|
|
* Return TRUE on success and FALSE on error. */
|
|
bool write_region_to_file(const char *name, FILE *stream, bool normal,
|
|
kind_of_writing_type method)
|
|
{
|
|
linestruct *birthline, *topline, *botline, *stopper, *afterline;
|
|
char *was_datastart, saved_byte;
|
|
size_t top_x, bot_x;
|
|
bool retval;
|
|
|
|
get_region(&topline, &top_x, &botline, &bot_x);
|
|
|
|
/* When needed, prepare a magic end line for the region. */
|
|
if (bot_x > 0 && !ISSET(NO_NEWLINES)) {
|
|
stopper = make_new_node(botline);
|
|
stopper->data = copy_of("");
|
|
} else
|
|
stopper = NULL;
|
|
|
|
/* Make the marked area look like a separate buffer. */
|
|
afterline = botline->next;
|
|
botline->next = stopper;
|
|
saved_byte = botline->data[bot_x];
|
|
botline->data[bot_x] = '\0';
|
|
was_datastart = topline->data;
|
|
topline->data += top_x;
|
|
birthline = openfile->filetop;
|
|
openfile->filetop = topline;
|
|
|
|
retval = write_file(name, stream, normal, method, NONOTES);
|
|
|
|
/* Restore the proper state of the buffer. */
|
|
openfile->filetop = birthline;
|
|
topline->data = was_datastart;
|
|
botline->data[bot_x] = saved_byte;
|
|
botline->next = afterline;
|
|
|
|
if (stopper)
|
|
delete_node(stopper);
|
|
|
|
return retval;
|
|
}
|
|
#endif /* !NANO_TINY */
|
|
|
|
/* Write the current buffer (or marked region) to disk. If exiting is TRUE,
|
|
* write the entire buffer regardless of whether the mark is on. Do not ask
|
|
* for a name when withprompt is FALSE (nor when doing save-on-exit and the
|
|
* buffer already has a name). Return 0 on error, 1 on success, and 2 when
|
|
* the buffer is to be discarded. */
|
|
int write_it_out(bool exiting, bool withprompt)
|
|
{
|
|
char *given;
|
|
/* The filename we offer, or what the user typed so far. */
|
|
bool maychange = (openfile->filename[0] == '\0');
|
|
/* Whether it's okay to save the buffer under a different name. */
|
|
kind_of_writing_type method = OVERWRITE;
|
|
#ifdef ENABLE_EXTRA
|
|
static bool did_credits = FALSE;
|
|
#endif
|
|
|
|
/* Display newlines in filenames as ^J. */
|
|
as_an_at = FALSE;
|
|
|
|
#ifndef NANO_TINY
|
|
given = copy_of((openfile->mark && !exiting) ? "" : openfile->filename);
|
|
#else
|
|
given = copy_of(openfile->filename);
|
|
#endif
|
|
|
|
while (TRUE) {
|
|
functionptrtype func;
|
|
const char *msg;
|
|
int response = 0;
|
|
int choice = 0;
|
|
#ifndef NANO_TINY
|
|
const char *formatstr = (openfile->fmt == DOS_FILE) ? _(" [DOS Format]") :
|
|
(openfile->fmt == MAC_FILE) ? _(" [Mac Format]") : "";
|
|
const char *backupstr = ISSET(MAKE_BACKUP) ? _(" [Backup]") : "";
|
|
|
|
/* When the mark is on, offer to write the selection to disk, but
|
|
* not when in restricted mode, because it would allow writing to
|
|
* a file not specified on the command line. */
|
|
if (openfile->mark && !exiting && !ISSET(RESTRICTED))
|
|
/* TRANSLATORS: The next six strings are prompts. */
|
|
msg = (method == PREPEND) ? _("Prepend Selection to File") :
|
|
(method == APPEND) ? _("Append Selection to File") :
|
|
_("Write Selection to File");
|
|
else if (method != OVERWRITE)
|
|
msg = (method == PREPEND) ? _("File Name to Prepend to") :
|
|
_("File Name to Append to");
|
|
else
|
|
#endif
|
|
msg = _("File Name to Write");
|
|
|
|
present_path = mallocstrcpy(present_path, "./");
|
|
|
|
/* When we shouldn't prompt, use the existing filename.
|
|
* Otherwise, ask for (confirmation of) the filename. */
|
|
if ((!withprompt || (ISSET(SAVE_ON_EXIT) && exiting)) &&
|
|
openfile->filename[0] != '\0')
|
|
answer = mallocstrcpy(answer, openfile->filename);
|
|
else
|
|
response = do_prompt(MWRITEFILE, given, NULL,
|
|
edit_refresh, "%s%s%s", msg,
|
|
#ifndef NANO_TINY
|
|
formatstr, backupstr
|
|
#else
|
|
"", ""
|
|
#endif
|
|
);
|
|
|
|
if (response < 0) {
|
|
statusbar(_("Cancelled"));
|
|
free(given);
|
|
return 0;
|
|
}
|
|
|
|
func = func_from_key(&response);
|
|
|
|
/* Upon request, abandon the buffer. */
|
|
if (func == discard_buffer) {
|
|
free(given);
|
|
return 2;
|
|
}
|
|
|
|
given = mallocstrcpy(given, answer);
|
|
|
|
#ifdef ENABLE_BROWSER
|
|
if (func == to_files) {
|
|
char *chosen = browse_in(answer);
|
|
|
|
if (chosen == NULL)
|
|
continue;
|
|
|
|
free(answer);
|
|
answer = chosen;
|
|
} else
|
|
#endif
|
|
#ifndef NANO_TINY
|
|
if (func == dos_format) {
|
|
openfile->fmt = (openfile->fmt == DOS_FILE) ? NIX_FILE : DOS_FILE;
|
|
continue;
|
|
} else if (func == mac_format) {
|
|
openfile->fmt = (openfile->fmt == MAC_FILE) ? NIX_FILE : MAC_FILE;
|
|
continue;
|
|
} else if (func == back_it_up) {
|
|
TOGGLE(MAKE_BACKUP);
|
|
continue;
|
|
} else if (func == prepend_it || func == append_it) {
|
|
if (func == prepend_it)
|
|
method = (method == PREPEND) ? OVERWRITE : PREPEND;
|
|
else
|
|
method = (method == APPEND) ? OVERWRITE : APPEND;
|
|
if (strcmp(answer, openfile->filename) == 0)
|
|
given[0] = '\0';
|
|
continue;
|
|
} else
|
|
#endif
|
|
if (func == do_help)
|
|
continue;
|
|
|
|
#ifdef ENABLE_EXTRA
|
|
/* If the user pressed Ctrl-X in the edit window, and answered "Y" at
|
|
* the "Save modified buffer?" prompt, and entered "zzy" as filename,
|
|
* and this is the first time around, show an Easter egg. */
|
|
if (exiting && !ISSET(SAVE_ON_EXIT) && openfile->filename[0] == '\0' &&
|
|
strcmp(answer, "zzy") == 0 && !did_credits) {
|
|
if (LINES > 5 && COLS > 31) {
|
|
do_credits();
|
|
did_credits = TRUE;
|
|
} else
|
|
/* TRANSLATORS: Concisely say the screen is too small. */
|
|
statusline(AHEM, _("Too tiny"));
|
|
|
|
free(given);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
if (method == OVERWRITE) {
|
|
bool name_exists, do_warning;
|
|
char *full_answer, *full_filename;
|
|
struct stat fileinfo;
|
|
|
|
full_answer = get_full_path(answer);
|
|
full_filename = get_full_path(openfile->filename);
|
|
name_exists = (stat((full_answer == NULL) ?
|
|
answer : full_answer, &fileinfo) != -1);
|
|
|
|
if (openfile->filename[0] == '\0')
|
|
do_warning = name_exists;
|
|
else
|
|
do_warning = (strcmp((full_answer == NULL) ?
|
|
answer : full_answer, (full_filename == NULL) ?
|
|
openfile->filename : full_filename) != 0);
|
|
|
|
free(full_filename);
|
|
free(full_answer);
|
|
|
|
if (do_warning) {
|
|
/* When in restricted mode, we aren't allowed to overwrite
|
|
* an existing file with the current buffer, nor to change
|
|
* the name of the current buffer if it already has one. */
|
|
if (ISSET(RESTRICTED)) {
|
|
/* TRANSLATORS: Restricted mode forbids overwriting. */
|
|
warn_and_briefly_pause(_("File exists -- cannot overwrite"));
|
|
continue;
|
|
}
|
|
|
|
if (!maychange) {
|
|
#ifndef NANO_TINY
|
|
if (exiting || !openfile->mark)
|
|
#endif
|
|
{
|
|
if (do_yesno_prompt(FALSE, _("Save file under "
|
|
"DIFFERENT NAME? ")) < 1)
|
|
continue;
|
|
maychange = TRUE;
|
|
}
|
|
}
|
|
|
|
if (name_exists) {
|
|
char *question = _("File \"%s\" exists; OVERWRITE? ");
|
|
char *name = crop_to_fit(answer, COLS - breadth(question) + 1);
|
|
char *message = nmalloc(strlen(question) + strlen(name) + 1);
|
|
|
|
sprintf(message, question, name);
|
|
|
|
choice = do_yesno_prompt(FALSE, message);
|
|
|
|
free(message);
|
|
free(name);
|
|
|
|
if (choice < 1)
|
|
continue;
|
|
}
|
|
}
|
|
#ifndef NANO_TINY
|
|
/* Complain if the file exists, the name hasn't changed,
|
|
* and the stat information we had before does not match
|
|
* what we have now. */
|
|
else if (name_exists && openfile->statinfo &&
|
|
(openfile->statinfo->st_mtime < fileinfo.st_mtime ||
|
|
openfile->statinfo->st_dev != fileinfo.st_dev ||
|
|
openfile->statinfo->st_ino != fileinfo.st_ino)) {
|
|
|
|
warn_and_briefly_pause(_("File on disk has changed"));
|
|
|
|
/* TRANSLATORS: Try to keep this at most 76 characters. */
|
|
choice = do_yesno_prompt(FALSE, _("File was modified "
|
|
"since you opened it; continue saving? "));
|
|
wipe_statusbar();
|
|
|
|
/* When in tool mode and not called by 'savefile',
|
|
* overwrite the file right here when requested. */
|
|
if (ISSET(SAVE_ON_EXIT) && withprompt) {
|
|
free(given);
|
|
if (choice == 1)
|
|
return write_file(openfile->filename, NULL,
|
|
NORMAL, OVERWRITE, NONOTES);
|
|
else if (choice == 0)
|
|
return 2;
|
|
else
|
|
return 0;
|
|
} else if (choice != 1) {
|
|
free(given);
|
|
return 1;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
free(given);
|
|
break;
|
|
}
|
|
|
|
/* When the mark is on (and we've prompted for a name and we're
|
|
* not exiting and we're not in restricted mode), then write out
|
|
* the marked region; otherwise, write out the whole buffer. */
|
|
#ifndef NANO_TINY
|
|
if (openfile->mark && withprompt && !exiting && !ISSET(RESTRICTED))
|
|
return write_region_to_file(answer, NULL, NORMAL, method);
|
|
else
|
|
#endif
|
|
return write_file(answer, NULL, NORMAL, method, ANNOTATE);
|
|
}
|
|
|
|
/* Write the current buffer to disk, or discard it. */
|
|
void do_writeout(void)
|
|
{
|
|
/* If the user chose to discard the buffer, close it. */
|
|
if (write_it_out(FALSE, TRUE) == 2)
|
|
close_and_go();
|
|
}
|
|
|
|
/* If it has a name, write the current buffer to disk without prompting. */
|
|
void do_savefile(void)
|
|
{
|
|
if (write_it_out(FALSE, FALSE) == 2)
|
|
close_and_go();
|
|
}
|
|
|
|
/* Convert the tilde notation when the given path begins with ~/ or ~user/.
|
|
* Return an allocated string containing the expanded path. */
|
|
char *real_dir_from_tilde(const char *path)
|
|
{
|
|
char *tilded, *retval;
|
|
size_t i = 1;
|
|
|
|
if (*path != '~')
|
|
return copy_of(path);
|
|
|
|
/* Figure out how much of the string we need to compare. */
|
|
while (path[i] != '/' && path[i] != '\0')
|
|
i++;
|
|
|
|
if (i == 1) {
|
|
get_homedir();
|
|
tilded = copy_of(homedir);
|
|
} else {
|
|
#ifdef HAVE_PWD_H
|
|
const struct passwd *userdata;
|
|
|
|
tilded = measured_copy(path, i);
|
|
|
|
do {
|
|
userdata = getpwent();
|
|
} while (userdata && strcmp(userdata->pw_name, tilded + 1) != 0);
|
|
endpwent();
|
|
|
|
if (userdata != NULL)
|
|
tilded = mallocstrcpy(tilded, userdata->pw_dir);
|
|
#else
|
|
tilded = copy_of("");
|
|
#endif
|
|
}
|
|
|
|
retval = nmalloc(strlen(tilded) + strlen(path + i) + 1);
|
|
sprintf(retval, "%s%s", tilded, path + i);
|
|
|
|
free(tilded);
|
|
|
|
return retval;
|
|
}
|
|
|
|
#if defined(ENABLE_TABCOMP) || defined(ENABLE_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;
|
|
|
|
int difference = mbstrcasecmp(a, b);
|
|
|
|
/* If two names are equivalent when ignoring case, compare them bytewise. */
|
|
if (difference == 0)
|
|
return strcmp(a, b);
|
|
else
|
|
return difference;
|
|
}
|
|
#endif
|
|
|
|
#ifdef ENABLE_TABCOMP
|
|
/* Return TRUE when the given path is a directory. */
|
|
bool is_dir(const char *path)
|
|
{
|
|
char *realpath = real_dir_from_tilde(path);
|
|
struct stat fileinfo;
|
|
bool retval;
|
|
|
|
retval = (stat(realpath, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode));
|
|
|
|
free(realpath);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* Try to complete the given fragment of given length to a username. */
|
|
char **username_completion(const char *morsel, size_t length, size_t *num_matches)
|
|
{
|
|
char **matches = NULL;
|
|
#ifdef HAVE_PWD_H
|
|
const struct passwd *userdata;
|
|
|
|
/* Iterate through the entries in the passwd file, and
|
|
* add each fitting username to the list of matches. */
|
|
while ((userdata = getpwent()) != NULL) {
|
|
if (strncmp(userdata->pw_name, morsel + 1, length - 1) == 0) {
|
|
#ifdef ENABLE_OPERATINGDIR
|
|
/* Skip directories that are outside of the allowed area. */
|
|
if (outside_of_confinement(userdata->pw_dir, TRUE))
|
|
continue;
|
|
#endif
|
|
matches = nrealloc(matches, (*num_matches + 1) * sizeof(char *));
|
|
matches[*num_matches] = nmalloc(strlen(userdata->pw_name) + 2);
|
|
sprintf(matches[*num_matches], "~%s", userdata->pw_name);
|
|
++(*num_matches);
|
|
}
|
|
}
|
|
|
|
endpwent();
|
|
#endif
|
|
|
|
return matches;
|
|
}
|
|
|
|
/* The next two functions were adapted from busybox 0.46 (cmdedit.c).
|
|
* Here is the tweaked notice from that file:
|
|
*
|
|
* Termios command-line History and Editing, originally intended for NetBSD.
|
|
* Copyright (C) 1999, 2000
|
|
* Main code: Adam Rogoyski <rogoyski@cs.utexas.edu>
|
|
* Etc: Dave Cinege <dcinege@psychosis.com>
|
|
* Adjusted/rewritten: 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. */
|
|
|
|
/* Try to complete the given fragment of given length to a filename. */
|
|
char **filename_completion(const char *morsel, size_t length, size_t *num_matches)
|
|
{
|
|
char *dirname = copy_of(morsel);
|
|
char *slash, *filename;
|
|
size_t filenamelen;
|
|
char *fullname = NULL;
|
|
char **matches = NULL;
|
|
const struct dirent *entry;
|
|
DIR *dir;
|
|
|
|
/* If there's a / in the name, split out filename and directory parts. */
|
|
slash = strrchr(dirname, '/');
|
|
if (slash != NULL) {
|
|
char *wasdirname = dirname;
|
|
|
|
filename = copy_of(++slash);
|
|
/* Cut off the filename part after the slash. */
|
|
*slash = '\0';
|
|
dirname = real_dir_from_tilde(dirname);
|
|
/* A non-absolute path is relative to the current browser directory. */
|
|
if (dirname[0] != '/') {
|
|
dirname = nrealloc(dirname, strlen(present_path) + strlen(wasdirname) + 1);
|
|
sprintf(dirname, "%s%s", present_path, wasdirname);
|
|
}
|
|
free(wasdirname);
|
|
} else {
|
|
filename = dirname;
|
|
dirname = copy_of(present_path);
|
|
}
|
|
|
|
dir = opendir(dirname);
|
|
|
|
if (dir == NULL) {
|
|
beep();
|
|
free(filename);
|
|
free(dirname);
|
|
return NULL;
|
|
}
|
|
|
|
filenamelen = strlen(filename);
|
|
|
|
/* Iterate through the filenames in the directory,
|
|
* and add each fitting one to the list of matches. */
|
|
while ((entry = readdir(dir)) != NULL) {
|
|
if (strncmp(entry->d_name, filename, filenamelen) == 0 &&
|
|
strcmp(entry->d_name, ".") != 0 &&
|
|
strcmp(entry->d_name, "..") != 0) {
|
|
fullname = nrealloc(fullname, strlen(dirname) +
|
|
strlen(entry->d_name) + 1);
|
|
|
|
sprintf(fullname, "%s%s", dirname, entry->d_name);
|
|
|
|
#ifdef ENABLE_OPERATINGDIR
|
|
if (outside_of_confinement(fullname, TRUE))
|
|
continue;
|
|
#endif
|
|
if (currmenu == MGOTODIR && !is_dir(fullname))
|
|
continue;
|
|
|
|
matches = nrealloc(matches, (*num_matches + 1) * sizeof(char *));
|
|
matches[*num_matches] = copy_of(entry->d_name);
|
|
++(*num_matches);
|
|
}
|
|
}
|
|
|
|
closedir(dir);
|
|
free(dirname);
|
|
free(filename);
|
|
free(fullname);
|
|
|
|
return matches;
|
|
}
|
|
|
|
/* Do tab completion. 'place' is the position of the status-bar cursor, and
|
|
* 'refresh_func' is the function to be called to refresh the edit window. */
|
|
char *input_tab(char *morsel, size_t *place, void (*refresh_func)(void), bool *listed)
|
|
{
|
|
size_t num_matches = 0;
|
|
char **matches = NULL;
|
|
|
|
/* If the cursor is not at the end of the fragment, do nothing. */
|
|
if (morsel[*place] != '\0') {
|
|
beep();
|
|
return morsel;
|
|
}
|
|
|
|
/* If the fragment starts with a tilde and contains no slash,
|
|
* then try completing it as a username. */
|
|
if (morsel[0] == '~' && strchr(morsel, '/') == NULL)
|
|
matches = username_completion(morsel, *place, &num_matches);
|
|
|
|
/* If there are no matches yet, try matching against filenames. */
|
|
if (matches == NULL)
|
|
matches = filename_completion(morsel, *place, &num_matches);
|
|
|
|
/* If possible completions were listed before but none will be listed now... */
|
|
if (*listed && num_matches < 2) {
|
|
refresh_func();
|
|
*listed = FALSE;
|
|
}
|
|
|
|
if (matches == NULL) {
|
|
beep();
|
|
return morsel;
|
|
}
|
|
|
|
const char *lastslash = revstrstr(morsel, "/", morsel + *place);
|
|
size_t length_of_path = (lastslash == NULL) ? 0 : lastslash - morsel + 1;
|
|
size_t match, common_len = 0;
|
|
char *shared, *glued;
|
|
char char1[MAXCHARLEN], char2[MAXCHARLEN];
|
|
int len1, len2;
|
|
|
|
/* Determine the number of characters that all matches have in common. */
|
|
while (TRUE) {
|
|
len1 = collect_char(matches[0] + common_len, char1);
|
|
|
|
for (match = 1; match < num_matches; match++) {
|
|
len2 = collect_char(matches[match] + common_len, char2);
|
|
|
|
if (len1 != len2 || strncmp(char1, char2, len2) != 0)
|
|
break;
|
|
}
|
|
|
|
if (match < num_matches || matches[0][common_len] == '\0')
|
|
break;
|
|
|
|
common_len += len1;
|
|
}
|
|
|
|
shared = nmalloc(length_of_path + common_len + 1);
|
|
|
|
strncpy(shared, morsel, length_of_path);
|
|
strncpy(shared + length_of_path, matches[0], common_len);
|
|
|
|
common_len += length_of_path;
|
|
shared[common_len] = '\0';
|
|
|
|
/* Cover also the case of the user specifying a relative path. */
|
|
glued = nmalloc(strlen(present_path) + common_len + 1);
|
|
sprintf(glued, "%s%s", present_path, shared);
|
|
|
|
if (num_matches == 1 && (is_dir(shared) || is_dir(glued)))
|
|
shared[common_len++] = '/';
|
|
|
|
/* If the matches have something in common, copy that part. */
|
|
if (common_len != *place) {
|
|
morsel = nrealloc(morsel, common_len + 1);
|
|
strncpy(morsel, shared, common_len);
|
|
morsel[common_len] = '\0';
|
|
*place = common_len;
|
|
} else if (num_matches == 1)
|
|
beep();
|
|
|
|
/* If there is more than one possible completion, show a sorted list. */
|
|
if (num_matches > 1) {
|
|
size_t longest_name = 0;
|
|
size_t nrows, ncols;
|
|
int row;
|
|
|
|
if (!*listed)
|
|
beep();
|
|
|
|
qsort(matches, num_matches, sizeof(char *), diralphasort);
|
|
|
|
/* Find the length of the longest name among the matches. */
|
|
for (match = 0; match < num_matches; match++) {
|
|
size_t namelen = breadth(matches[match]);
|
|
|
|
if (namelen > longest_name)
|
|
longest_name = namelen;
|
|
}
|
|
|
|
if (longest_name > COLS - 1)
|
|
longest_name = COLS - 1;
|
|
|
|
/* The columns of names will be separated by two spaces,
|
|
* but the last column will have just one space after it. */
|
|
ncols = (COLS + 1) / (longest_name + 2);
|
|
nrows = (num_matches + ncols - 1) / ncols;
|
|
|
|
row = (nrows < editwinrows - 1) ? editwinrows - nrows - 1 : 0;
|
|
|
|
/* Blank the edit window and hide the cursor. */
|
|
blank_edit();
|
|
curs_set(0);
|
|
|
|
/* Now print the list of matches out there. */
|
|
for (match = 0; match < num_matches; match++) {
|
|
char *disp;
|
|
|
|
wmove(edit, row, (longest_name + 2) * (match % ncols));
|
|
|
|
if (row == editwinrows - 1 && (match + 1) % ncols == 0 &&
|
|
match + 1 < num_matches) {
|
|
waddstr(edit, _("(more)"));
|
|
break;
|
|
}
|
|
|
|
disp = display_string(matches[match], 0, longest_name, FALSE, FALSE);
|
|
waddstr(edit, disp);
|
|
free(disp);
|
|
|
|
if ((match + 1) % ncols == 0)
|
|
row++;
|
|
}
|
|
|
|
wnoutrefresh(edit);
|
|
*listed = TRUE;
|
|
}
|
|
|
|
free_chararray(matches, num_matches);
|
|
free(glued);
|
|
free(shared);
|
|
|
|
return morsel;
|
|
}
|
|
#endif /* ENABLE_TABCOMP */
|