| /* $Id$ */ |
| /************************************************************************** |
| * text.c * |
| * * |
| * Copyright (C) 1999-2004 Chris Allegretta * |
| * Copyright (C) 2005-2006 David Lawrence Ramsey * |
| * This program is free software; you can redistribute it and/or modify * |
| * it under the terms of the GNU General Public License as published by * |
| * the Free Software Foundation; either version 2, or (at your option) * |
| * any later version. * |
| * * |
| * This program is distributed in the hope that it will be useful, but * |
| * WITHOUT ANY WARRANTY; without even the implied warranty of * |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * |
| * General Public License for more details. * |
| * * |
| * You should have received a copy of the GNU General Public License * |
| * along with this program; if not, write to the Free Software * |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * |
| * 02110-1301, USA. * |
| * * |
| **************************************************************************/ |
| |
| #include "proto.h" |
| |
| #include <stdio.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <sys/wait.h> |
| #include <errno.h> |
| |
| #ifndef NANO_TINY |
| static pid_t pid = -1; |
| /* The PID of the forked process in execute_command(), for use |
| * with the cancel_command() signal handler. */ |
| #endif |
| #ifndef DISABLE_WRAPPING |
| static bool prepend_wrap = FALSE; |
| /* Should we prepend wrapped text to the next line? */ |
| #endif |
| #ifndef DISABLE_JUSTIFY |
| static filestruct *jusbottom = NULL; |
| /* Pointer to the end of the justify buffer. */ |
| #endif |
| |
| #ifndef NANO_TINY |
| /* Toggle the mark. */ |
| void do_mark(void) |
| { |
| openfile->mark_set = !openfile->mark_set; |
| if (openfile->mark_set) { |
| statusbar(_("Mark Set")); |
| openfile->mark_begin = openfile->current; |
| openfile->mark_begin_x = openfile->current_x; |
| } else { |
| statusbar(_("Mark Unset")); |
| openfile->mark_begin = NULL; |
| openfile->mark_begin_x = 0; |
| edit_refresh(); |
| } |
| } |
| #endif /* !NANO_TINY */ |
| |
| /* Delete one character. */ |
| void do_delete(void) |
| { |
| bool do_refresh = FALSE; |
| /* Do we have to call edit_refresh(), or can we get away with |
| * just update_line()? */ |
| |
| assert(openfile->current != NULL && openfile->current->data != NULL && openfile->current_x <= strlen(openfile->current->data)); |
| |
| openfile->placewewant = xplustabs(); |
| |
| if (openfile->current->data[openfile->current_x] != '\0') { |
| int char_buf_len = parse_mbchar(openfile->current->data + |
| openfile->current_x, NULL, NULL); |
| size_t line_len = strlen(openfile->current->data + |
| openfile->current_x); |
| |
| assert(openfile->current_x < strlen(openfile->current->data)); |
| |
| /* Let's get dangerous. */ |
| charmove(&openfile->current->data[openfile->current_x], |
| &openfile->current->data[openfile->current_x + |
| char_buf_len], line_len - char_buf_len + 1); |
| |
| null_at(&openfile->current->data, openfile->current_x + |
| line_len - char_buf_len); |
| #ifndef NANO_TINY |
| if (openfile->mark_set && openfile->mark_begin == |
| openfile->current && openfile->current_x < |
| openfile->mark_begin_x) |
| openfile->mark_begin_x -= char_buf_len; |
| #endif |
| openfile->totsize--; |
| } else if (openfile->current != openfile->filebot) { |
| filestruct *foo = openfile->current->next; |
| |
| assert(openfile->current_x == strlen(openfile->current->data)); |
| |
| /* If we're deleting at the end of a line, we need to call |
| * edit_refresh(). */ |
| if (openfile->current->data[openfile->current_x] == '\0') |
| do_refresh = TRUE; |
| |
| openfile->current->data = charealloc(openfile->current->data, |
| openfile->current_x + strlen(foo->data) + 1); |
| strcpy(openfile->current->data + openfile->current_x, |
| foo->data); |
| #ifndef NANO_TINY |
| if (openfile->mark_set && openfile->mark_begin == |
| openfile->current->next) { |
| openfile->mark_begin = openfile->current; |
| openfile->mark_begin_x += openfile->current_x; |
| } |
| #endif |
| if (openfile->filebot == foo) |
| openfile->filebot = openfile->current; |
| |
| unlink_node(foo); |
| delete_node(foo); |
| renumber(openfile->current); |
| openfile->totsize--; |
| |
| /* If the NO_NEWLINES flag isn't set, and text has been added to |
| * the magicline as a result of deleting at the end of the line |
| * before filebot, add a new magicline. */ |
| if (!ISSET(NO_NEWLINES) && openfile->current == |
| openfile->filebot && openfile->current->data[0] != '\0') |
| new_magicline(); |
| } else |
| return; |
| |
| set_modified(); |
| |
| #ifdef ENABLE_COLOR |
| /* If color syntaxes are available and turned on, we need to call |
| * edit_refresh(). */ |
| if (openfile->colorstrings != NULL && !ISSET(NO_COLOR_SYNTAX)) |
| do_refresh = TRUE; |
| #endif |
| |
| if (do_refresh) |
| edit_refresh(); |
| else |
| update_line(openfile->current, openfile->current_x); |
| } |
| |
| /* Backspace over one character. That is, move the cursor left one |
| * character, and then delete the character there. */ |
| void do_backspace(void) |
| { |
| if (openfile->current != openfile->fileage || |
| openfile->current_x > 0) { |
| do_left(); |
| do_delete(); |
| } |
| } |
| |
| /* Insert a tab. If the TABS_TO_SPACES flag is set, insert the number |
| * of spaces that a tab would normally take up. */ |
| void do_tab(void) |
| { |
| #ifndef NANO_TINY |
| if (ISSET(TABS_TO_SPACES)) { |
| char *output; |
| size_t output_len = 0, new_pww = xplustabs(); |
| |
| do { |
| new_pww++; |
| output_len++; |
| } while (new_pww % tabsize != 0); |
| |
| output = charalloc(output_len + 1); |
| |
| charset(output, ' ', output_len); |
| output[output_len] = '\0'; |
| |
| do_output(output, output_len, TRUE); |
| |
| free(output); |
| } else { |
| #endif |
| do_output("\t", 1, TRUE); |
| #ifndef NANO_TINY |
| } |
| #endif |
| } |
| |
| #ifndef NANO_TINY |
| /* Indent or unindent the current line (or all lines covered by the mark |
| * if the mark is on) len columns, depending on whether len is positive |
| * or negative. If the TABS_TO_SPACES flag is set, indent/unindent by |
| * len spaces. Otherwise, indent/unindent by (len / tabsize) tabs and |
| * (len % tabsize) spaces. */ |
| void do_indent(ssize_t cols) |
| { |
| bool indent_changed = FALSE; |
| /* Whether any indenting or unindenting was done. */ |
| bool unindent = FALSE; |
| /* Whether we're unindenting text. */ |
| char *line_indent = NULL; |
| /* The text added to each line in order to indent it. */ |
| size_t line_indent_len = 0; |
| /* The length of the text added to each line in order to indent |
| * it. */ |
| filestruct *top, *bot, *f; |
| size_t top_x, bot_x; |
| |
| assert(openfile->current != NULL && openfile->current->data != NULL); |
| |
| /* If cols is zero, get out. */ |
| if (cols == 0) |
| return; |
| |
| /* If cols is negative, make it positive and set unindent to |
| * TRUE. */ |
| if (cols < 0) { |
| cols = -cols; |
| unindent = TRUE; |
| /* Otherwise, we're indenting, in which case the file will always be |
| * modified, so set indent_changed to TRUE. */ |
| } else |
| indent_changed = TRUE; |
| |
| /* If the mark is on, use all lines covered by the mark. */ |
| if (openfile->mark_set) |
| mark_order((const filestruct **)&top, &top_x, |
| (const filestruct **)&bot, &bot_x, NULL); |
| /* Otherwise, use the current line. */ |
| else { |
| top = openfile->current; |
| bot = top; |
| } |
| |
| if (!unindent) { |
| /* Set up the text we'll be using as indentation. */ |
| line_indent = charalloc(cols + 1); |
| |
| if (ISSET(TABS_TO_SPACES)) { |
| /* Set the indentation to cols spaces. */ |
| charset(line_indent, ' ', cols); |
| line_indent_len = cols; |
| } else { |
| /* Set the indentation to (cols / tabsize) tabs and (cols % |
| * tabsize) spaces. */ |
| size_t num_tabs = cols / tabsize; |
| size_t num_spaces = cols % tabsize; |
| |
| charset(line_indent, '\t', num_tabs); |
| charset(line_indent + num_tabs, ' ', num_spaces); |
| |
| line_indent_len = num_tabs + num_spaces; |
| } |
| |
| line_indent[line_indent_len] = '\0'; |
| } |
| |
| /* Go through each line of the text. */ |
| for (f = top; f != bot->next; f = f->next) { |
| size_t line_len = strlen(f->data); |
| size_t indent_len = indent_length(f->data); |
| |
| if (!unindent) { |
| /* If we're indenting, add the characters in line_indent to |
| * the beginning of the non-whitespace text of this line. */ |
| f->data = charealloc(f->data, line_len + |
| line_indent_len + 1); |
| charmove(&f->data[indent_len + line_indent_len], |
| &f->data[indent_len], line_len - indent_len + 1); |
| strncpy(f->data + indent_len, line_indent, line_indent_len); |
| openfile->totsize += line_indent_len; |
| |
| /* Keep track of the change in the current line. */ |
| if (openfile->mark_set && f == openfile->mark_begin && |
| openfile->mark_begin_x >= indent_len) |
| openfile->mark_begin_x += line_indent_len; |
| |
| if (f == openfile->current && openfile->current_x >= |
| indent_len) |
| openfile->current_x += line_indent_len; |
| |
| /* If the NO_NEWLINES flag isn't set, and this is the |
| * magicline, add a new magicline. */ |
| if (!ISSET(NO_NEWLINES) && f == openfile->filebot) |
| new_magicline(); |
| } else { |
| size_t indent_col = strnlenpt(f->data, indent_len); |
| /* The length in columns of the indentation on this |
| * line. */ |
| |
| if (cols <= indent_col) { |
| size_t indent_new = actual_x(f->data, indent_col - |
| cols); |
| /* The length of the indentation remaining on |
| * this line after we unindent. */ |
| size_t indent_shift = indent_len - indent_new; |
| /* The change in the indentation on this line |
| * after we unindent. */ |
| |
| /* If we're unindenting, and there's at least cols |
| * columns' worth of indentation at the beginning of the |
| * non-whitespace text of this line, remove it. */ |
| charmove(&f->data[indent_new], &f->data[indent_len], |
| line_len - indent_shift - indent_new + 1); |
| null_at(&f->data, line_len - indent_shift + 1); |
| openfile->totsize -= indent_shift; |
| |
| /* Keep track of the change in the current line. */ |
| if (openfile->mark_set && f == openfile->mark_begin && |
| openfile->mark_begin_x > indent_new) { |
| if (openfile->mark_begin_x <= indent_len) |
| openfile->mark_begin_x = indent_new; |
| else |
| openfile->mark_begin_x -= indent_shift; |
| } |
| |
| if (f == openfile->current && openfile->current_x > |
| indent_new) { |
| if (openfile->current_x <= indent_len) |
| openfile->current_x = indent_new; |
| else |
| openfile->current_x -= indent_shift; |
| } |
| |
| /* We've unindented, so set indent_changed to TRUE. */ |
| if (!indent_changed) |
| indent_changed = TRUE; |
| } |
| } |
| } |
| |
| if (!unindent) |
| /* Clean up. */ |
| free(line_indent); |
| |
| if (indent_changed) { |
| /* Mark the file as modified. */ |
| set_modified(); |
| |
| /* Update the screen. */ |
| edit_refresh(); |
| } |
| } |
| |
| /* Indent the current line, or all lines covered by the mark if the mark |
| * is on, tabsize columns. */ |
| void do_indent_void(void) |
| { |
| do_indent(tabsize); |
| } |
| |
| /* Unindent the current line, or all lines covered by the mark if the |
| * mark is on, tabsize columns. */ |
| void do_unindent(void) |
| { |
| do_indent(-tabsize); |
| } |
| #endif /* !NANO_TINY */ |
| |
| /* Someone hits Enter *gasp!* */ |
| void do_enter(void) |
| { |
| filestruct *newnode = make_new_node(openfile->current); |
| size_t extra = 0; |
| |
| assert(openfile->current != NULL && openfile->current->data != NULL); |
| |
| #ifndef NANO_TINY |
| /* Do auto-indenting, like the neolithic Turbo Pascal editor. */ |
| if (ISSET(AUTOINDENT)) { |
| /* If we are breaking the line in the indentation, the new |
| * indentation should have only current_x characters, and |
| * current_x should not change. */ |
| extra = indent_length(openfile->current->data); |
| if (extra > openfile->current_x) |
| extra = openfile->current_x; |
| } |
| #endif |
| newnode->data = charalloc(strlen(openfile->current->data + |
| openfile->current_x) + extra + 1); |
| strcpy(&newnode->data[extra], openfile->current->data + |
| openfile->current_x); |
| #ifndef NANO_TINY |
| if (ISSET(AUTOINDENT)) { |
| strncpy(newnode->data, openfile->current->data, extra); |
| openfile->totsize += mbstrlen(newnode->data); |
| } |
| #endif |
| null_at(&openfile->current->data, openfile->current_x); |
| #ifndef NANO_TINY |
| if (openfile->mark_set && openfile->current == |
| openfile->mark_begin && openfile->current_x < |
| openfile->mark_begin_x) { |
| openfile->mark_begin = newnode; |
| openfile->mark_begin_x += extra - openfile->current_x; |
| } |
| #endif |
| openfile->current_x = extra; |
| |
| if (openfile->current == openfile->filebot) |
| openfile->filebot = newnode; |
| splice_node(openfile->current, newnode, |
| openfile->current->next); |
| |
| renumber(openfile->current); |
| openfile->current = newnode; |
| |
| openfile->totsize++; |
| set_modified(); |
| |
| openfile->placewewant = xplustabs(); |
| |
| edit_refresh(); |
| } |
| |
| #ifndef NANO_TINY |
| /* Send a SIGKILL (unconditional kill) to the forked process in |
| * execute_command(). */ |
| RETSIGTYPE cancel_command(int signal) |
| { |
| if (kill(pid, SIGKILL) == -1) |
| nperror("kill"); |
| } |
| |
| /* Execute command in a shell. Return TRUE on success. */ |
| bool execute_command(const char *command) |
| { |
| int fd[2]; |
| FILE *f; |
| char *shellenv; |
| struct sigaction oldaction, newaction; |
| /* Original and temporary handlers for SIGINT. */ |
| bool sig_failed = FALSE; |
| /* Did sigaction() fail without changing the signal handlers? */ |
| |
| /* Make our pipes. */ |
| if (pipe(fd) == -1) { |
| statusbar(_("Could not pipe")); |
| return FALSE; |
| } |
| |
| /* Check $SHELL for the shell to use. If it isn't set, use |
| * /bin/sh. Note that $SHELL should contain only a path, with no |
| * arguments. */ |
| shellenv = getenv("SHELL"); |
| if (shellenv == NULL) |
| shellenv = "/bin/sh"; |
| |
| /* Fork a child. */ |
| if ((pid = fork()) == 0) { |
| close(fd[0]); |
| dup2(fd[1], fileno(stdout)); |
| dup2(fd[1], fileno(stderr)); |
| |
| /* If execl() returns at all, there was an error. */ |
| execl(shellenv, tail(shellenv), "-c", command, NULL); |
| exit(0); |
| } |
| |
| /* Continue as parent. */ |
| close(fd[1]); |
| |
| if (pid == -1) { |
| close(fd[0]); |
| statusbar(_("Could not fork")); |
| return FALSE; |
| } |
| |
| /* Before we start reading the forked command's output, we set |
| * things up so that Ctrl-C will cancel the new process. */ |
| |
| /* Enable interpretation of the special control keys so that we get |
| * SIGINT when Ctrl-C is pressed. */ |
| enable_signals(); |
| |
| if (sigaction(SIGINT, NULL, &newaction) == -1) { |
| sig_failed = TRUE; |
| nperror("sigaction"); |
| } else { |
| newaction.sa_handler = cancel_command; |
| if (sigaction(SIGINT, &newaction, &oldaction) == -1) { |
| sig_failed = TRUE; |
| nperror("sigaction"); |
| } |
| } |
| |
| /* Note that now oldaction is the previous SIGINT signal handler, |
| * to be restored later. */ |
| |
| f = fdopen(fd[0], "rb"); |
| if (f == NULL) |
| nperror("fdopen"); |
| |
| read_file(f, "stdin"); |
| |
| if (wait(NULL) == -1) |
| nperror("wait"); |
| |
| if (!sig_failed && sigaction(SIGINT, &oldaction, NULL) == -1) |
| nperror("sigaction"); |
| |
| /* Disable interpretation of the special control keys so that we can |
| * use Ctrl-C for other things. */ |
| disable_signals(); |
| |
| return TRUE; |
| } |
| #endif /* !NANO_TINY */ |
| |
| #ifndef DISABLE_WRAPPING |
| /* Unset the prepend_wrap flag. We need to do this as soon as we do |
| * something other than type text. */ |
| void wrap_reset(void) |
| { |
| prepend_wrap = FALSE; |
| } |
| |
| /* We wrap the given line. Precondition: we assume the cursor has been |
| * moved forward since the last typed character. Return TRUE if we |
| * wrapped, and FALSE otherwise. */ |
| bool do_wrap(filestruct *line) |
| { |
| size_t line_len; |
| /* The length of the line we wrap. */ |
| ssize_t wrap_loc; |
| /* The index of line->data where we wrap. */ |
| #ifndef NANO_TINY |
| const char *indent_string = NULL; |
| /* Indentation to prepend to the new line. */ |
| size_t indent_len = 0; |
| /* The length of indent_string. */ |
| #endif |
| const char *after_break; |
| /* The text after the wrap point. */ |
| size_t after_break_len; |
| /* The length of after_break. */ |
| bool prepending = FALSE; |
| /* Do we prepend to the next line? */ |
| const char *next_line = NULL; |
| /* The next line, minus indentation. */ |
| size_t next_line_len = 0; |
| /* The length of next_line. */ |
| char *new_line = NULL; |
| /* The line we create. */ |
| size_t new_line_len = 0; |
| /* The eventual length of new_line. */ |
| |
| /* There are three steps. First, we decide where to wrap. Then, we |
| * create the new wrap line. Finally, we clean up. */ |
| |
| /* Step 1, finding where to wrap. We are going to add a new line |
| * after a blank character. In this step, we call break_line() to |
| * get the location of the last blank we can break the line at, and |
| * set wrap_loc to the location of the character after it, so that |
| * the blank is preserved at the end of the line. |
| * |
| * If there is no legal wrap point, or we reach the last character |
| * of the line while trying to find one, we should return without |
| * wrapping. Note that if autoindent is turned on, we don't break |
| * at the end of it! */ |
| assert(line != NULL && line->data != NULL); |
| |
| /* Save the length of the line. */ |
| line_len = strlen(line->data); |
| |
| /* Find the last blank where we can break the line. */ |
| wrap_loc = break_line(line->data, fill |
| #ifndef DISABLE_HELP |
| , FALSE |
| #endif |
| ); |
| |
| /* If we couldn't break the line, or we've reached the end of it, we |
| * don't wrap. */ |
| if (wrap_loc == -1 || line->data[wrap_loc] == '\0') |
| return FALSE; |
| |
| /* Otherwise, move forward to the character just after the blank. */ |
| wrap_loc += move_mbright(line->data + wrap_loc, 0); |
| |
| /* If we've reached the end of the line, we don't wrap. */ |
| if (line->data[wrap_loc] == '\0') |
| return FALSE; |
| |
| #ifndef NANO_TINY |
| /* If autoindent is turned on, and we're on the character just after |
| * the indentation, we don't wrap. */ |
| if (ISSET(AUTOINDENT)) { |
| /* Get the indentation of this line. */ |
| indent_string = line->data; |
| indent_len = indent_length(indent_string); |
| |
| if (wrap_loc == indent_len) |
| return FALSE; |
| } |
| #endif |
| |
| /* Step 2, making the new wrap line. It will consist of indentation |
| * followed by the text after the wrap point, optionally followed by |
| * a space (if the text after the wrap point doesn't end in a blank) |
| * and the text of the next line, if they can fit without wrapping, |
| * the next line exists, and the prepend_wrap flag is set. */ |
| |
| /* after_break is the text that will be wrapped to the next line. */ |
| after_break = line->data + wrap_loc; |
| after_break_len = line_len - wrap_loc; |
| |
| assert(strlen(after_break) == after_break_len); |
| |
| /* We prepend the wrapped text to the next line, if the prepend_wrap |
| * flag is set, there is a next line, and prepending would not make |
| * the line too long. */ |
| if (prepend_wrap && line != openfile->filebot) { |
| const char *end = after_break + move_mbleft(after_break, |
| after_break_len); |
| |
| /* If after_break doesn't end in a blank, make sure it ends in a |
| * space. */ |
| if (!is_blank_mbchar(end)) { |
| line_len++; |
| line->data = charealloc(line->data, line_len + 1); |
| line->data[line_len - 1] = ' '; |
| line->data[line_len] = '\0'; |
| after_break = line->data + wrap_loc; |
| after_break_len++; |
| openfile->totsize++; |
| } |
| |
| next_line = line->next->data; |
| next_line_len = strlen(next_line); |
| |
| if (after_break_len + next_line_len <= fill) { |
| prepending = TRUE; |
| new_line_len += next_line_len; |
| } |
| } |
| |
| /* new_line_len is now the length of the text that will be wrapped |
| * to the next line, plus (if we're prepending to it) the length of |
| * the text of the next line. */ |
| new_line_len += after_break_len; |
| |
| #ifndef NANO_TINY |
| if (ISSET(AUTOINDENT)) { |
| if (prepending) { |
| /* If we're prepending, the indentation will come from the |
| * next line. */ |
| indent_string = next_line; |
| indent_len = indent_length(indent_string); |
| next_line += indent_len; |
| } else { |
| /* Otherwise, it will come from this line, in which case |
| * we should increase new_line_len to make room for it. */ |
| new_line_len += indent_len; |
| openfile->totsize += mbstrnlen(indent_string, indent_len); |
| } |
| } |
| #endif |
| |
| /* Now we allocate the new line and copy the text into it. */ |
| new_line = charalloc(new_line_len + 1); |
| new_line[0] = '\0'; |
| |
| #ifndef NANO_TINY |
| if (ISSET(AUTOINDENT)) { |
| /* Copy the indentation. */ |
| strncpy(new_line, indent_string, indent_len); |
| new_line[indent_len] = '\0'; |
| new_line_len += indent_len; |
| } |
| #endif |
| |
| /* Copy all the text after the wrap point of the current line. */ |
| strcat(new_line, after_break); |
| |
| /* Break the current line at the wrap point. */ |
| null_at(&line->data, wrap_loc); |
| |
| if (prepending) { |
| /* If we're prepending, copy the text from the next line, minus |
| * the indentation that we already copied above. */ |
| strcat(new_line, next_line); |
| |
| free(line->next->data); |
| line->next->data = new_line; |
| |
| /* If the NO_NEWLINES flag isn't set, and text has been added to |
| * the magicline, make a new magicline. */ |
| if (!ISSET(NO_NEWLINES) && openfile->filebot->data[0] != '\0') |
| new_magicline(); |
| } else { |
| /* Otherwise, make a new line and copy the text after where we |
| * broke this line to the beginning of the new line. */ |
| splice_node(openfile->current, make_new_node(openfile->current), |
| openfile->current->next); |
| |
| /* If the current line is the last line of the file, move the |
| * last line of the file down to the next line. */ |
| if (openfile->filebot == openfile->current) |
| openfile->filebot = openfile->current->next; |
| |
| openfile->current->next->data = new_line; |
| |
| openfile->totsize++; |
| } |
| |
| /* Step 3, clean up. Reposition the cursor and mark, and do some |
| * other sundry things. */ |
| |
| /* Set the prepend_wrap flag, so that later wraps of this line will |
| * be prepended to the next line. */ |
| prepend_wrap = TRUE; |
| |
| /* Each line knows its number. We recalculate these if we inserted |
| * a new line. */ |
| if (!prepending) |
| renumber(line); |
| |
| /* If the cursor was after the break point, we must move it. We |
| * also clear the prepend_wrap flag in this case. */ |
| if (openfile->current_x > wrap_loc) { |
| prepend_wrap = FALSE; |
| |
| openfile->current = openfile->current->next; |
| openfile->current_x -= wrap_loc |
| #ifndef NANO_TINY |
| - indent_len |
| #endif |
| ; |
| openfile->placewewant = xplustabs(); |
| } |
| |
| #ifndef NANO_TINY |
| /* If the mark was on this line after the wrap point, we move it |
| * down. If it was on the next line and we prepended to that line, |
| * we move it right. */ |
| if (openfile->mark_set) { |
| if (openfile->mark_begin == line && openfile->mark_begin_x > |
| wrap_loc) { |
| openfile->mark_begin = line->next; |
| openfile->mark_begin_x -= wrap_loc - indent_len + 1; |
| } else if (prepending && openfile->mark_begin == line->next) |
| openfile->mark_begin_x += after_break_len; |
| } |
| #endif |
| |
| return TRUE; |
| } |
| #endif /* !DISABLE_WRAPPING */ |
| |
| #if !defined(DISABLE_HELP) || !defined(DISABLE_WRAPJUSTIFY) |
| /* We are trying to break a chunk off line. We find the last blank such |
| * that the display length to there is at most (goal + 1). If there is |
| * no such blank, then we find the first blank. We then take the last |
| * blank in that group of blanks. The terminating '\0' counts as a |
| * blank, as does a '\n' if newline is TRUE. */ |
| ssize_t break_line(const char *line, ssize_t goal |
| #ifndef DISABLE_HELP |
| , bool newline |
| #endif |
| ) |
| { |
| ssize_t blank_loc = -1; |
| /* Current tentative return value. Index of the last blank we |
| * found with short enough display width. */ |
| ssize_t cur_loc = 0; |
| /* Current index in line. */ |
| size_t cur_pos = 0; |
| /* Current column position in line. */ |
| int line_len; |
| |
| assert(line != NULL); |
| |
| while (*line != '\0' && goal >= cur_pos) { |
| line_len = parse_mbchar(line, NULL, &cur_pos); |
| |
| if (is_blank_mbchar(line) |
| #ifndef DISABLE_HELP |
| || (newline && *line == '\n') |
| #endif |
| ) { |
| blank_loc = cur_loc; |
| |
| #ifndef DISABLE_HELP |
| if (newline && *line == '\n') |
| break; |
| #endif |
| } |
| |
| line += line_len; |
| cur_loc += line_len; |
| } |
| |
| if (goal >= cur_pos) |
| /* In fact, the whole line displays shorter than goal. */ |
| return cur_loc; |
| |
| if (blank_loc == -1) { |
| /* No blank was found that was short enough. */ |
| bool found_blank = FALSE; |
| ssize_t found_blank_loc = 0; |
| |
| while (*line != '\0') { |
| line_len = parse_mbchar(line, NULL, NULL); |
| |
| if (is_blank_mbchar(line) |
| #ifndef DISABLE_HELP |
| || (newline && *line == '\n') |
| #endif |
| ) { |
| if (!found_blank) |
| found_blank = TRUE; |
| found_blank_loc = cur_loc; |
| } else if (found_blank) |
| return found_blank_loc; |
| |
| line += line_len; |
| cur_loc += line_len; |
| } |
| |
| return -1; |
| } |
| |
| /* Move to the last blank after blank_loc, if there is one. */ |
| line -= cur_loc; |
| line += blank_loc; |
| line_len = parse_mbchar(line, NULL, NULL); |
| line += line_len; |
| |
| while (*line != '\0' && (is_blank_mbchar(line) |
| #ifndef DISABLE_HELP |
| || (newline && *line == '\n') |
| #endif |
| )) { |
| #ifndef DISABLE_HELP |
| if (newline && *line == '\n') |
| break; |
| #endif |
| |
| line_len = parse_mbchar(line, NULL, NULL); |
| |
| line += line_len; |
| blank_loc += line_len; |
| } |
| |
| return blank_loc; |
| } |
| #endif /* !DISABLE_HELP || !DISABLE_WRAPJUSTIFY */ |
| |
| #if !defined(NANO_TINY) || !defined(DISABLE_JUSTIFY) |
| /* The "indentation" of a line is the whitespace between the quote part |
| * and the non-whitespace of the line. */ |
| size_t indent_length(const char *line) |
| { |
| size_t len = 0; |
| char *blank_mb; |
| int blank_mb_len; |
| |
| assert(line != NULL); |
| |
| blank_mb = charalloc(mb_cur_max()); |
| |
| while (*line != '\0') { |
| blank_mb_len = parse_mbchar(line, blank_mb, NULL); |
| |
| if (!is_blank_mbchar(blank_mb)) |
| break; |
| |
| line += blank_mb_len; |
| len += blank_mb_len; |
| } |
| |
| free(blank_mb); |
| |
| return len; |
| } |
| #endif /* !NANO_TINY || !DISABLE_JUSTIFY */ |
| |
| #ifndef DISABLE_JUSTIFY |
| /* justify_format() replaces blanks with spaces and multiple spaces by 1 |
| * (except it maintains up to 2 after a character in punct optionally |
| * followed by a character in brackets, and removes all from the end). |
| * |
| * justify_format() might make paragraph->data shorter, and change the |
| * actual pointer with null_at(). |
| * |
| * justify_format() will not look at the first skip characters of |
| * paragraph. skip should be at most strlen(paragraph->data). The |
| * character at paragraph[skip + 1] must not be blank. */ |
| void justify_format(filestruct *paragraph, size_t skip) |
| { |
| char *end, *new_end, *new_paragraph_data; |
| size_t shift = 0; |
| #ifndef NANO_TINY |
| size_t mark_shift = 0; |
| #endif |
| |
| /* These four asserts are assumptions about the input data. */ |
| assert(paragraph != NULL); |
| assert(paragraph->data != NULL); |
| assert(skip < strlen(paragraph->data)); |
| assert(!is_blank_mbchar(paragraph->data + skip)); |
| |
| end = paragraph->data + skip; |
| new_paragraph_data = charalloc(strlen(paragraph->data) + 1); |
| strncpy(new_paragraph_data, paragraph->data, skip); |
| new_end = new_paragraph_data + skip; |
| |
| while (*end != '\0') { |
| int end_len; |
| |
| /* If this character is blank, change it to a space if |
| * necessary, and skip over all blanks after it. */ |
| if (is_blank_mbchar(end)) { |
| end_len = parse_mbchar(end, NULL, NULL); |
| |
| *new_end = ' '; |
| new_end++; |
| end += end_len; |
| |
| while (*end != '\0' && is_blank_mbchar(end)) { |
| end_len = parse_mbchar(end, NULL, NULL); |
| |
| end += end_len; |
| shift += end_len; |
| |
| #ifndef NANO_TINY |
| /* Keep track of the change in the current line. */ |
| if (openfile->mark_set && openfile->mark_begin == |
| paragraph && openfile->mark_begin_x >= end - |
| paragraph->data) |
| mark_shift += end_len; |
| #endif |
| } |
| /* If this character is punctuation optionally followed by a |
| * bracket and then followed by blanks, change no more than two |
| * of the blanks to spaces if necessary, and skip over all |
| * blanks after them. */ |
| } else if (mbstrchr(punct, end) != NULL) { |
| end_len = parse_mbchar(end, NULL, NULL); |
| |
| while (end_len > 0) { |
| *new_end = *end; |
| new_end++; |
| end++; |
| end_len--; |
| } |
| |
| if (*end != '\0' && mbstrchr(brackets, end) != NULL) { |
| end_len = parse_mbchar(end, NULL, NULL); |
| |
| while (end_len > 0) { |
| *new_end = *end; |
| new_end++; |
| end++; |
| end_len--; |
| } |
| } |
| |
| if (*end != '\0' && is_blank_mbchar(end)) { |
| end_len = parse_mbchar(end, NULL, NULL); |
| |
| *new_end = ' '; |
| new_end++; |
| end += end_len; |
| } |
| |
| if (*end != '\0' && is_blank_mbchar(end)) { |
| end_len = parse_mbchar(end, NULL, NULL); |
| |
| *new_end = ' '; |
| new_end++; |
| end += end_len; |
| } |
| |
| while (*end != '\0' && is_blank_mbchar(end)) { |
| end_len = parse_mbchar(end, NULL, NULL); |
| |
| end += end_len; |
| shift += end_len; |
| |
| #ifndef NANO_TINY |
| /* Keep track of the change in the current line. */ |
| if (openfile->mark_set && openfile->mark_begin == |
| paragraph && openfile->mark_begin_x >= end - |
| paragraph->data) |
| mark_shift += end_len; |
| #endif |
| } |
| /* If this character is neither blank nor punctuation, leave it |
| * unchanged. */ |
| } else { |
| end_len = parse_mbchar(end, NULL, NULL); |
| |
| while (end_len > 0) { |
| *new_end = *end; |
| new_end++; |
| end++; |
| end_len--; |
| } |
| } |
| } |
| |
| assert(*end == '\0'); |
| |
| *new_end = *end; |
| |
| /* If there are spaces at the end of the line, remove them. */ |
| while (new_end > new_paragraph_data + skip && |
| *(new_end - 1) == ' ') { |
| new_end--; |
| shift++; |
| } |
| |
| if (shift > 0) { |
| openfile->totsize -= shift; |
| null_at(&new_paragraph_data, new_end - new_paragraph_data); |
| free(paragraph->data); |
| paragraph->data = new_paragraph_data; |
| |
| #ifndef NANO_TINY |
| /* Adjust the mark coordinates to compensate for the change in |
| * the current line. */ |
| if (openfile->mark_set && openfile->mark_begin == paragraph) { |
| openfile->mark_begin_x -= mark_shift; |
| if (openfile->mark_begin_x > new_end - new_paragraph_data) |
| openfile->mark_begin_x = new_end - new_paragraph_data; |
| } |
| #endif |
| } else |
| free(new_paragraph_data); |
| } |
| |
| /* The "quote part" of a line is the largest initial substring matching |
| * the quote string. This function returns the length of the quote part |
| * of the given line. |
| * |
| * Note that if !HAVE_REGEX_H then we match concatenated copies of |
| * quotestr. */ |
| size_t quote_length(const char *line) |
| { |
| #ifdef HAVE_REGEX_H |
| regmatch_t matches; |
| int rc = regexec("ereg, line, 1, &matches, 0); |
| |
| if (rc == REG_NOMATCH || matches.rm_so == (regoff_t)-1) |
| return 0; |
| /* matches.rm_so should be 0, since the quote string should start |
| * with the caret ^. */ |
| return matches.rm_eo; |
| #else /* !HAVE_REGEX_H */ |
| size_t qdepth = 0; |
| |
| /* Compute quote depth level. */ |
| while (strncmp(line + qdepth, quotestr, quotelen) == 0) |
| qdepth += quotelen; |
| return qdepth; |
| #endif /* !HAVE_REGEX_H */ |
| } |
| |
| /* a_line and b_line are lines of text. The quotation part of a_line is |
| * the first a_quote characters. Check that the quotation part of |
| * b_line is the same. */ |
| bool quotes_match(const char *a_line, size_t a_quote, const char |
| *b_line) |
| { |
| /* Here is the assumption about a_quote. */ |
| assert(a_quote == quote_length(a_line)); |
| |
| return (a_quote == quote_length(b_line) && |
| strncmp(a_line, b_line, a_quote) == 0); |
| } |
| |
| /* We assume a_line and b_line have no quote part. Then, we return |
| * whether b_line could follow a_line in a paragraph. */ |
| bool indents_match(const char *a_line, size_t a_indent, const char |
| *b_line, size_t b_indent) |
| { |
| assert(a_indent == indent_length(a_line)); |
| assert(b_indent == indent_length(b_line)); |
| |
| return (b_indent <= a_indent && |
| strncmp(a_line, b_line, b_indent) == 0); |
| } |
| |
| /* Is foo the beginning of a paragraph? |
| * |
| * A line of text consists of a "quote part", followed by an |
| * "indentation part", followed by text. The functions quote_length() |
| * and indent_length() calculate these parts. |
| * |
| * A line is "part of a paragraph" if it has a part not in the quote |
| * part or the indentation. |
| * |
| * A line is "the beginning of a paragraph" if it is part of a |
| * paragraph and |
| * 1) it is the top line of the file, or |
| * 2) the line above it is not part of a paragraph, or |
| * 3) the line above it does not have precisely the same quote |
| * part, or |
| * 4) the indentation of this line is not an initial substring of |
| * the indentation of the previous line, or |
| * 5) this line has no quote part and some indentation, and |
| * autoindent isn't turned on. |
| * The reason for number 5) is that if autoindent isn't turned on, |
| * then an indented line is expected to start a paragraph, as in |
| * books. Thus, nano can justify an indented paragraph only if |
| * autoindent is turned on. */ |
| bool begpar(const filestruct *const foo) |
| { |
| size_t quote_len, indent_len, temp_id_len; |
| |
| if (foo == NULL) |
| return FALSE; |
| |
| /* Case 1). */ |
| if (foo == openfile->fileage) |
| return TRUE; |
| |
| quote_len = quote_length(foo->data); |
| indent_len = indent_length(foo->data + quote_len); |
| |
| /* Not part of a paragraph. */ |
| if (foo->data[quote_len + indent_len] == '\0') |
| return FALSE; |
| |
| /* Case 3). */ |
| if (!quotes_match(foo->data, quote_len, foo->prev->data)) |
| return TRUE; |
| |
| temp_id_len = indent_length(foo->prev->data + quote_len); |
| |
| /* Case 2) or 5) or 4). */ |
| if (foo->prev->data[quote_len + temp_id_len] == '\0' || |
| (quote_len == 0 && indent_len > 0 |
| #ifndef NANO_TINY |
| && !ISSET(AUTOINDENT) |
| #endif |
| ) || !indents_match(foo->prev->data + quote_len, temp_id_len, |
| foo->data + quote_len, indent_len)) |
| return TRUE; |
| |
| return FALSE; |
| } |
| |
| /* Is foo inside a paragraph? */ |
| bool inpar(const filestruct *const foo) |
| { |
| size_t quote_len; |
| |
| if (foo == NULL) |
| return FALSE; |
| |
| quote_len = quote_length(foo->data); |
| |
| return (foo->data[quote_len + indent_length(foo->data + |
| quote_len)] != '\0'); |
| } |
| |
| /* Move the next par_len lines, starting with first_line, into the |
| * justify buffer, leaving copies of those lines in place. Assume that |
| * par_len is greater than zero, and that there are enough lines after |
| * first_line. */ |
| void backup_lines(filestruct *first_line, size_t par_len) |
| { |
| filestruct *top = first_line; |
| /* The top of the paragraph we're backing up. */ |
| filestruct *bot = first_line; |
| /* The bottom of the paragraph we're backing up. */ |
| size_t i; |
| /* Generic loop variable. */ |
| size_t current_x_save = openfile->current_x; |
| ssize_t fl_lineno_save = first_line->lineno; |
| ssize_t edittop_lineno_save = openfile->edittop->lineno; |
| ssize_t current_lineno_save = openfile->current->lineno; |
| #ifndef NANO_TINY |
| bool old_mark_set = openfile->mark_set; |
| ssize_t mb_lineno_save = 0; |
| size_t mark_begin_x_save = 0; |
| |
| if (old_mark_set) { |
| mb_lineno_save = openfile->mark_begin->lineno; |
| mark_begin_x_save = openfile->mark_begin_x; |
| } |
| #endif |
| |
| /* par_len will be one greater than the number of lines between |
| * current and filebot if filebot is the last line in the |
| * paragraph. */ |
| assert(par_len > 0 && openfile->current->lineno + par_len <= |
| openfile->filebot->lineno + 1); |
| |
| /* Move bot down par_len lines to the line after the last line of |
| * the paragraph, if there is one. */ |
| for (i = par_len; i > 0 && bot != openfile->filebot; i--) |
| bot = bot->next; |
| |
| /* Move the paragraph from the current buffer's filestruct to the |
| * justify buffer. */ |
| move_to_filestruct(&jusbuffer, &jusbottom, top, 0, bot, |
| (i == 1 && bot == openfile->filebot) ? strlen(bot->data) : 0); |
| |
| /* Copy the paragraph back to the current buffer's filestruct from |
| * the justify buffer. */ |
| copy_from_filestruct(jusbuffer, jusbottom); |
| |
| /* Move upward from the last line of the paragraph to the first |
| * line, putting first_line, edittop, current, and mark_begin at the |
| * same lines in the copied paragraph that they had in the original |
| * paragraph. */ |
| if (openfile->current != openfile->fileage) |
| top = openfile->current->prev; |
| else |
| top = openfile->current; |
| for (i = par_len; i > 0 && top != NULL; i--) { |
| if (top->lineno == fl_lineno_save) |
| first_line = top; |
| if (top->lineno == edittop_lineno_save) |
| openfile->edittop = top; |
| if (top->lineno == current_lineno_save) |
| openfile->current = top; |
| #ifndef NANO_TINY |
| if (old_mark_set && top->lineno == mb_lineno_save) { |
| openfile->mark_begin = top; |
| openfile->mark_begin_x = mark_begin_x_save; |
| } |
| #endif |
| top = top->prev; |
| } |
| |
| /* Put current_x at the same place in the copied paragraph that it |
| * had in the original paragraph. */ |
| openfile->current_x = current_x_save; |
| |
| set_modified(); |
| } |
| |
| /* Find the beginning of the current paragraph if we're in one, or the |
| * beginning of the next paragraph if we're not. Afterwards, save the |
| * quote length and paragraph length in *quote and *par. Return TRUE if |
| * we found a paragraph, and FALSE if there was an error or we didn't |
| * find a paragraph. |
| * |
| * See the comment at begpar() for more about when a line is the |
| * beginning of a paragraph. */ |
| bool find_paragraph(size_t *const quote, size_t *const par) |
| { |
| size_t quote_len; |
| /* Length of the initial quotation of the paragraph we search |
| * for. */ |
| size_t par_len; |
| /* Number of lines in the paragraph we search for. */ |
| filestruct *current_save; |
| /* The line at the beginning of the paragraph we search for. */ |
| ssize_t current_y_save; |
| /* The y-coordinate at the beginning of the paragraph we search |
| * for. */ |
| |
| #ifdef HAVE_REGEX_H |
| if (quoterc != 0) { |
| statusbar(_("Bad quote string %s: %s"), quotestr, quoteerr); |
| return FALSE; |
| } |
| #endif |
| |
| assert(openfile->current != NULL); |
| |
| /* If we're at the end of the last line of the file, it means that |
| * there aren't any paragraphs left, so get out. */ |
| if (openfile->current == openfile->filebot && openfile->current_x == |
| strlen(openfile->filebot->data)) |
| return FALSE; |
| |
| /* If the current line isn't in a paragraph, move forward to the |
| * last line of the next paragraph, if any. */ |
| if (!inpar(openfile->current)) { |
| do_para_end(FALSE); |
| |
| /* If we end up past the beginning of the line, it means that |
| * we're at the end of the last line of the file, and the line |
| * isn't blank, in which case the last line of the file is the |
| * last line of the next paragraph. |
| * |
| * Otherwise, if we end up on a line that's in a paragraph, it |
| * means that we're on the line after the last line of the next |
| * paragraph, in which case we should move back to the last line |
| * of the next paragraph. */ |
| if (openfile->current_x == 0) { |
| if (!inpar(openfile->current->prev)) |
| return FALSE; |
| if (openfile->current != openfile->fileage) |
| openfile->current = openfile->current->prev; |
| } |
| } |
| |
| /* If the current line isn't the first line of the paragraph, move |
| * back to the first line of the paragraph. */ |
| if (!begpar(openfile->current)) |
| do_para_begin(FALSE); |
| |
| /* Now current is the first line of the paragraph. Set quote_len to |
| * the quotation length of that line, and set par_len to the number |
| * of lines in this paragraph. */ |
| quote_len = quote_length(openfile->current->data); |
| current_save = openfile->current; |
| current_y_save = openfile->current_y; |
| do_para_end(FALSE); |
| par_len = openfile->current->lineno - current_save->lineno; |
| |
| /* If we end up past the beginning of the line, it means that we're |
| * at the end of the last line of the file, and the line isn't |
| * blank, in which case the last line of the file is part of the |
| * paragraph. */ |
| if (openfile->current_x > 0) |
| par_len++; |
| openfile->current = current_save; |
| openfile->current_y = current_y_save; |
| |
| /* Save the values of quote_len and par_len. */ |
| assert(quote != NULL && par != NULL); |
| |
| *quote = quote_len; |
| *par = par_len; |
| |
| return TRUE; |
| } |
| |
| /* If full_justify is TRUE, justify the entire file. Otherwise, justify |
| * the current paragraph. */ |
| void do_justify(bool full_justify) |
| { |
| filestruct *first_par_line = NULL; |
| /* Will be the first line of the justified paragraph(s), if any. |
| * For restoring after unjustify. */ |
| filestruct *last_par_line = NULL; |
| /* Will be the line after the last line of the justified |
| * paragraph(s), if any. Also for restoring after unjustify. */ |
| bool filebot_inpar = FALSE; |
| /* Whether the text at filebot is part of the current |
| * paragraph. */ |
| |
| /* We save these variables to be restored if the user |
| * unjustifies. */ |
| filestruct *edittop_save = openfile->edittop; |
| filestruct *current_save = openfile->current; |
| size_t current_x_save = openfile->current_x; |
| size_t pww_save = openfile->placewewant; |
| size_t totsize_save = openfile->totsize; |
| #ifndef NANO_TINY |
| filestruct *mark_begin_save = openfile->mark_begin; |
| size_t mark_begin_x_save = openfile->mark_begin_x; |
| #endif |
| bool modified_save = openfile->modified; |
| |
| int kbinput; |
| bool meta_key, func_key, s_or_t, ran_func, finished; |
| |
| /* Move to the beginning of the current line, so that justifying at |
| * the end of the last line of the file, if that line isn't blank, |
| * will work the first time through. */ |
| openfile->current_x = 0; |
| |
| /* If we're justifying the entire file, start at the beginning. */ |
| if (full_justify) |
| openfile->current = openfile->fileage; |
| |
| while (TRUE) { |
| size_t i; |
| /* Generic loop variable. */ |
| filestruct *curr_first_par_line; |
| /* The first line of the current paragraph. */ |
| size_t quote_len; |
| /* Length of the initial quotation of the current |
| * paragraph. */ |
| size_t indent_len; |
| /* Length of the initial indentation of the current |
| * paragraph. */ |
| size_t par_len; |
| /* Number of lines in the current paragraph. */ |
| ssize_t break_pos; |
| /* Where we will break lines. */ |
| char *indent_string; |
| /* The first indentation that doesn't match the initial |
| * indentation of the current paragraph. This is put at the |
| * beginning of every line broken off the first justified |
| * line of the paragraph. Note that this works because a |
| * paragraph can only contain two indentations at most: the |
| * initial one, and a different one starting on a line after |
| * the first. See the comment at begpar() for more about |
| * when a line is part of a paragraph. */ |
| |
| /* Find the first line of the paragraph to be justified. That |
| * is the start of this paragraph if we're in one, or the start |
| * of the next otherwise. Save the quote length and paragraph |
| * length (number of lines). Don't refresh the screen yet, |
| * since we'll do that after we justify. |
| * |
| * If the search failed, we do one of two things. If we're |
| * justifying the whole file, and we've found at least one |
| * paragraph, it means that we should justify all the way to the |
| * last line of the file, so set the last line of the text to be |
| * justified to the last line of the file and break out of the |
| * loop. Otherwise, it means that there are no paragraph(s) to |
| * justify, so refresh the screen and get out. */ |
| if (!find_paragraph("e_len, &par_len)) { |
| if (full_justify && first_par_line != NULL) { |
| last_par_line = openfile->filebot; |
| break; |
| } else { |
| edit_refresh(); |
| return; |
| } |
| } |
| |
| /* par_len will be one greater than the number of lines between |
| * current and filebot if filebot is the last line in the |
| * paragraph. Set filebot_inpar to TRUE if this is the case. */ |
| filebot_inpar = (openfile->current->lineno + par_len == |
| openfile->filebot->lineno + 1); |
| |
| /* If we haven't already done it, move the original paragraph(s) |
| * to the justify buffer, splice a copy of the original |
| * paragraph(s) into the file in the same place, and set |
| * first_par_line to the first line of the copy. */ |
| if (first_par_line == NULL) { |
| backup_lines(openfile->current, full_justify ? |
| openfile->filebot->lineno - openfile->current->lineno + |
| ((openfile->filebot->data[0] != '\0') ? 1 : 0) : |
| par_len); |
| first_par_line = openfile->current; |
| } |
| |
| /* Set curr_first_par_line to the first line of the current |
| * paragraph. */ |
| curr_first_par_line = openfile->current; |
| |
| /* Initialize indent_string to a blank string. */ |
| indent_string = mallocstrcpy(NULL, ""); |
| |
| /* Find the first indentation in the paragraph that doesn't |
| * match the indentation of the first line, and save it in |
| * indent_string. If all the indentations are the same, save |
| * the indentation of the first line in indent_string. */ |
| { |
| const filestruct *indent_line = openfile->current; |
| bool past_first_line = FALSE; |
| |
| for (i = 0; i < par_len; i++) { |
| indent_len = quote_len + |
| indent_length(indent_line->data + quote_len); |
| |
| if (indent_len != strlen(indent_string)) { |
| indent_string = mallocstrncpy(indent_string, |
| indent_line->data, indent_len + 1); |
| indent_string[indent_len] = '\0'; |
| |
| if (past_first_line) |
| break; |
| } |
| |
| if (indent_line == openfile->current) |
| past_first_line = TRUE; |
| |
| indent_line = indent_line->next; |
| } |
| } |
| |
| /* Now tack all the lines of the paragraph together, skipping |
| * the quoting and indentation on all lines after the first. */ |
| for (i = 0; i < par_len - 1; i++) { |
| filestruct *next_line = openfile->current->next; |
| size_t line_len = strlen(openfile->current->data); |
| size_t next_line_len = |
| strlen(openfile->current->next->data); |
| |
| indent_len = quote_len + |
| indent_length(openfile->current->next->data + |
| quote_len); |
| |
| next_line_len -= indent_len; |
| openfile->totsize -= indent_len; |
| |
| /* We're just about to tack the next line onto this one. If |
| * this line isn't empty, make sure it ends in a space. */ |
| if (line_len > 0 && |
| openfile->current->data[line_len - 1] != ' ') { |
| line_len++; |
| openfile->current->data = |
| charealloc(openfile->current->data, |
| line_len + 1); |
| openfile->current->data[line_len - 1] = ' '; |
| openfile->current->data[line_len] = '\0'; |
| openfile->totsize++; |
| } |
| |
| openfile->current->data = |
| charealloc(openfile->current->data, line_len + |
| next_line_len + 1); |
| strcat(openfile->current->data, next_line->data + |
| indent_len); |
| |
| /* Don't destroy edittop or filebot! */ |
| if (next_line == openfile->edittop) |
| openfile->edittop = openfile->current; |
| if (next_line == openfile->filebot) |
| openfile->filebot = openfile->current; |
| |
| #ifndef NANO_TINY |
| /* Adjust the mark coordinates to compensate for the change |
| * in the next line. */ |
| if (openfile->mark_set && openfile->mark_begin == |
| next_line) { |
| openfile->mark_begin = openfile->current; |
| openfile->mark_begin_x += line_len - indent_len; |
| } |
| #endif |
| |
| unlink_node(next_line); |
| delete_node(next_line); |
| |
| /* If we've removed the next line, we need to go through |
| * this line again. */ |
| i--; |
| |
| par_len--; |
| openfile->totsize--; |
| } |
| |
| /* Call justify_format() on the paragraph, which will remove |
| * excess spaces from it and change all blank characters to |
| * spaces. */ |
| justify_format(openfile->current, quote_len + |
| indent_length(openfile->current->data + quote_len)); |
| |
| while (par_len > 0 && strlenpt(openfile->current->data) > |
| fill) { |
| size_t line_len = strlen(openfile->current->data); |
| |
| indent_len = strlen(indent_string); |
| |
| /* If this line is too long, try to wrap it to the next line |
| * to make it short enough. */ |
| break_pos = break_line(openfile->current->data + indent_len, |
| fill - strnlenpt(openfile->current->data, indent_len) |
| #ifndef DISABLE_HELP |
| , FALSE |
| #endif |
| ); |
| |
| /* We can't break the line, or don't need to, so get out. */ |
| if (break_pos == -1 || break_pos + indent_len == line_len) |
| break; |
| |
| /* Move forward to the character after the indentation and |
| * just after the space. */ |
| break_pos += indent_len + 1; |
| |
| assert(break_pos <= line_len); |
| |
| /* Make a new line, and copy the text after where we're |
| * going to break this line to the beginning of the new |
| * line. */ |
| splice_node(openfile->current, |
| make_new_node(openfile->current), |
| openfile->current->next); |
| |
| /* If this paragraph is non-quoted, and autoindent isn't |
| * turned on, set the indentation length to zero so that the |
| * indentation is treated as part of the line. */ |
| if (quote_len == 0 |
| #ifndef NANO_TINY |
| && !ISSET(AUTOINDENT) |
| #endif |
| ) |
| indent_len = 0; |
| |
| /* Copy the text after where we're going to break the |
| * current line to the next line. */ |
| openfile->current->next->data = charalloc(indent_len + 1 + |
| line_len - break_pos); |
| strncpy(openfile->current->next->data, indent_string, |
| indent_len); |
| strcpy(openfile->current->next->data + indent_len, |
| openfile->current->data + break_pos); |
| |
| par_len++; |
| openfile->totsize += indent_len + 1; |
| |
| #ifndef NANO_TINY |
| /* Adjust the mark coordinates to compensate for the change |
| * in the current line. */ |
| if (openfile->mark_set && openfile->mark_begin == |
| openfile->current && openfile->mark_begin_x > |
| break_pos) { |
| openfile->mark_begin = openfile->current->next; |
| openfile->mark_begin_x -= break_pos - indent_len; |
| } |
| #endif |
| |
| /* Break the current line. */ |
| null_at(&openfile->current->data, break_pos); |
| |
| /* If the current line is the last line of the file, move |
| * the last line of the file down to the next line. */ |
| if (openfile->filebot == openfile->current) |
| openfile->filebot = openfile->filebot->next; |
| |
| /* Go to the next line. */ |
| par_len--; |
| openfile->current_y++; |
| openfile->current = openfile->current->next; |
| } |
| |
| /* We're done breaking lines, so we don't need indent_string |
| * anymore. */ |
| free(indent_string); |
| |
| /* Go to the next line, if possible. If there is no next line, |
| * move to the end of the current line. */ |
| if (openfile->current != openfile->filebot) { |
| openfile->current_y++; |
| openfile->current = openfile->current->next; |
| } else |
| openfile->current_x = strlen(openfile->current->data); |
| |
| /* Renumber the lines of the now-justified current paragraph, |
| * since both find_paragraph() and edit_refresh() need the line |
| * numbers to be right. */ |
| renumber(curr_first_par_line); |
| |
| /* We've just finished justifying the paragraph. If we're not |
| * justifying the entire file, break out of the loop. |
| * Otherwise, continue the loop so that we justify all the |
| * paragraphs in the file. */ |
| if (!full_justify) |
| break; |
| } |
| |
| /* We are now done justifying the paragraph or the file, so clean |
| * up. current_y and totsize have been maintained above. If we |
| * actually justified something, set last_par_line to the new end of |
| * the paragraph. */ |
| if (first_par_line != NULL) |
| last_par_line = openfile->current; |
| |
| edit_refresh(); |
| |
| #ifndef NANO_TINY |
| /* We're going to set jump_buf so that we return here after a |
| * SIGWINCH instead of to main(). Indicate this. */ |
| jump_buf_main = FALSE; |
| |
| /* Return here after a SIGWINCH. */ |
| sigsetjmp(jump_buf, 1); |
| #endif |
| |
| statusbar(_("Can now UnJustify!")); |
| |
| /* If constant cursor position display is on, make sure the current |
| * cursor position will be properly displayed on the statusbar. */ |
| if (ISSET(CONST_UPDATE)) |
| do_cursorpos(TRUE); |
| |
| /* Display the shortcut list with UnJustify. */ |
| shortcut_init(TRUE); |
| display_main_list(); |
| |
| /* Now get a keystroke and see if it's unjustify. If not, put back |
| * the keystroke and return. */ |
| kbinput = do_input(&meta_key, &func_key, &s_or_t, &ran_func, |
| &finished, FALSE); |
| |
| if (s_or_t && kbinput == NANO_UNJUSTIFY_KEY) { |
| /* Splice the justify buffer back into the file, but only if we |
| * actually justified something. */ |
| if (first_par_line != NULL) { |
| filestruct *top_save; |
| |
| /* Partition the filestruct so that it contains only the |
| * text of the justified paragraph. */ |
| filepart = partition_filestruct(first_par_line, 0, |
| last_par_line, filebot_inpar ? |
| strlen(last_par_line->data) : 0); |
| |
| /* Remove the text of the justified paragraph, and |
| * replace it with the text in the justify buffer. */ |
| free_filestruct(openfile->fileage); |
| openfile->fileage = jusbuffer; |
| openfile->filebot = jusbottom; |
| |
| top_save = openfile->fileage; |
| |
| /* Unpartition the filestruct so that it contains all the |
| * text again. Note that the justified paragraph has been |
| * replaced with the unjustified paragraph. */ |
| unpartition_filestruct(&filepart); |
| |
| /* Renumber starting with the beginning line of the old |
| * partition. */ |
| renumber(top_save); |
| |
| /* Restore the justify we just did (ungrateful user!). */ |
| openfile->edittop = edittop_save; |
| openfile->current = current_save; |
| openfile->current_x = current_x_save; |
| openfile->placewewant = pww_save; |
| openfile->totsize = totsize_save; |
| #ifndef NANO_TINY |
| if (openfile->mark_set) { |
| openfile->mark_begin = mark_begin_save; |
| openfile->mark_begin_x = mark_begin_x_save; |
| } |
| #endif |
| openfile->modified = modified_save; |
| |
| /* Clear the justify buffer. */ |
| jusbuffer = NULL; |
| |
| if (!openfile->modified) |
| titlebar(NULL); |
| edit_refresh(); |
| } |
| } else { |
| unget_kbinput(kbinput, meta_key, func_key); |
| |
| /* Blow away the text in the justify buffer. */ |
| free_filestruct(jusbuffer); |
| jusbuffer = NULL; |
| } |
| |
| blank_statusbar(); |
| |
| /* Display the shortcut list with UnCut. */ |
| shortcut_init(FALSE); |
| display_main_list(); |
| } |
| |
| /* Justify the current paragraph. */ |
| void do_justify_void(void) |
| { |
| do_justify(FALSE); |
| } |
| |
| /* Justify the entire file. */ |
| void do_full_justify(void) |
| { |
| do_justify(TRUE); |
| } |
| #endif /* !DISABLE_JUSTIFY */ |
| |
| #ifndef DISABLE_SPELLER |
| /* A word is misspelled in the file. Let the user replace it. We |
| * return FALSE if the user cancels. */ |
| bool do_int_spell_fix(const char *word) |
| { |
| char *save_search, *save_replace; |
| size_t match_len, current_x_save = openfile->current_x; |
| size_t pww_save = openfile->placewewant; |
| filestruct *edittop_save = openfile->edittop; |
| filestruct *current_save = openfile->current; |
| /* Save where we are. */ |
| bool canceled = FALSE; |
| /* The return value. */ |
| bool case_sens_set = ISSET(CASE_SENSITIVE); |
| #ifndef NANO_TINY |
| bool backwards_search_set = ISSET(BACKWARDS_SEARCH); |
| #endif |
| #ifdef HAVE_REGEX_H |
| bool regexp_set = ISSET(USE_REGEXP); |
| #endif |
| #ifndef NANO_TINY |
| bool old_mark_set = openfile->mark_set; |
| bool added_magicline = FALSE; |
| /* Whether we added a magicline after filebot. */ |
| bool right_side_up = FALSE; |
| /* TRUE if (mark_begin, mark_begin_x) is the top of the mark, |
| * FALSE if (current, current_x) is. */ |
| filestruct *top, *bot; |
| size_t top_x, bot_x; |
| #endif |
| |
| /* Make sure spell-check is case sensitive. */ |
| SET(CASE_SENSITIVE); |
| |
| #ifndef NANO_TINY |
| /* Make sure spell-check goes forward only. */ |
| UNSET(BACKWARDS_SEARCH); |
| #endif |
| #ifdef HAVE_REGEX_H |
| /* Make sure spell-check doesn't use regular expressions. */ |
| UNSET(USE_REGEXP); |
| #endif |
| |
| /* Save the current search/replace strings. */ |
| search_init_globals(); |
| save_search = last_search; |
| save_replace = last_replace; |
| |
| /* Set the search/replace strings to the misspelled word. */ |
| last_search = mallocstrcpy(NULL, word); |
| last_replace = mallocstrcpy(NULL, word); |
| |
| #ifndef NANO_TINY |
| if (old_mark_set) { |
| /* If the mark is on, partition the filestruct so that it |
| * contains only the marked text; if the NO_NEWLINES flag isn't |
| * set, keep track of whether the text will have a magicline |
| * added when we're done correcting misspelled words; and |
| * turn the mark off. */ |
| mark_order((const filestruct **)&top, &top_x, |
| (const filestruct **)&bot, &bot_x, &right_side_up); |
| filepart = partition_filestruct(top, top_x, bot, bot_x); |
| if (!ISSET(NO_NEWLINES)) |
| added_magicline = (openfile->filebot->data[0] != '\0'); |
| openfile->mark_set = FALSE; |
| } |
| #endif |
| |
| /* Start from the top of the file. */ |
| openfile->edittop = openfile->fileage; |
| openfile->current = openfile->fileage; |
| openfile->current_x = (size_t)-1; |
| openfile->placewewant = 0; |
| |
| /* Find the first whole occurrence of word. */ |
| findnextstr_wrap_reset(); |
| while (findnextstr(TRUE, FALSE, openfile->fileage, 0, word, |
| &match_len)) { |
| if (is_whole_word(openfile->current_x, openfile->current->data, |
| word)) { |
| size_t xpt = xplustabs(); |
| char *exp_word = display_string(openfile->current->data, |
| xpt, strnlenpt(openfile->current->data, |
| openfile->current_x + match_len) - xpt, FALSE); |
| |
| edit_refresh(); |
| |
| do_replace_highlight(TRUE, exp_word); |
| |
| /* Allow all instances of the word to be corrected. */ |
| canceled = (do_prompt(FALSE, |
| #ifndef DISABLE_TABCOMP |
| TRUE, |
| #endif |
| spell_list, word, |
| #ifndef NANO_TINY |
| NULL, |
| #endif |
| edit_refresh, _("Edit a replacement")) == -1); |
| |
| do_replace_highlight(FALSE, exp_word); |
| |
| free(exp_word); |
| |
| if (!canceled && strcmp(word, answer) != 0) { |
| openfile->current_x--; |
| do_replace_loop(TRUE, &canceled, openfile->current, |
| &openfile->current_x, word); |
| } |
| |
| break; |
| } |
| } |
| |
| #ifndef NANO_TINY |
| if (old_mark_set) { |
| /* If the mark was on, the NO_NEWLINES flag isn't set, and we |
| * added a magicline, remove it now. */ |
| if (!ISSET(NO_NEWLINES) && added_magicline) |
| remove_magicline(); |
| |
| /* Put the beginning and the end of the mark at the beginning |
| * and the end of the spell-checked text. */ |
| if (openfile->fileage == openfile->filebot) |
| bot_x += top_x; |
| if (right_side_up) { |
| openfile->mark_begin_x = top_x; |
| current_x_save = bot_x; |
| } else { |
| current_x_save = top_x; |
| openfile->mark_begin_x = bot_x; |
| } |
| |
| /* Unpartition the filestruct so that it contains all the text |
| * again, and turn the mark back on. */ |
| unpartition_filestruct(&filepart); |
| openfile->mark_set = TRUE; |
| } |
| #endif |
| |
| /* Restore the search/replace strings. */ |
| free(last_search); |
| last_search = save_search; |
| free(last_replace); |
| last_replace = save_replace; |
| |
| /* Restore where we were. */ |
| openfile->edittop = edittop_save; |
| openfile->current = current_save; |
| openfile->current_x = current_x_save; |
| openfile->placewewant = pww_save; |
| |
| /* Restore case sensitivity setting. */ |
| if (!case_sens_set) |
| UNSET(CASE_SENSITIVE); |
| |
| #ifndef NANO_TINY |
| /* Restore search/replace direction. */ |
| if (backwards_search_set) |
| SET(BACKWARDS_SEARCH); |
| #endif |
| #ifdef HAVE_REGEX_H |
| /* Restore regular expression usage setting. */ |
| if (regexp_set) |
| SET(USE_REGEXP); |
| #endif |
| |
| return !canceled; |
| } |
| |
| /* Internal (integrated) spell checking using the spell program, |
| * filtered through the sort and uniq programs. Return NULL for normal |
| * termination, and the error string otherwise. */ |
| const char *do_int_speller(const char *tempfile_name) |
| { |
| char *read_buff, *read_buff_ptr, *read_buff_word; |
| size_t pipe_buff_size, read_buff_size, read_buff_read, bytesread; |
| int spell_fd[2], sort_fd[2], uniq_fd[2], tempfile_fd = -1; |
| pid_t pid_spell, pid_sort, pid_uniq; |
| int spell_status, sort_status, uniq_status; |
| |
| /* Create all three pipes up front. */ |
| if (pipe(spell_fd) == -1 || pipe(sort_fd) == -1 || |
| pipe(uniq_fd) == -1) |
| return _("Could not create pipe"); |
| |
| statusbar(_("Creating misspelled word list, please wait...")); |
| |
| /* A new process to run spell in. */ |
| if ((pid_spell = fork()) == 0) { |
| /* Child continues (i.e. future spell process). */ |
| close(spell_fd[0]); |
| |
| /* Replace the standard input with the temp file. */ |
| if ((tempfile_fd = open(tempfile_name, O_RDONLY)) == -1) |
| goto close_pipes_and_exit; |
| |
| if (dup2(tempfile_fd, STDIN_FILENO) != STDIN_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(tempfile_fd); |
| |
| /* Send spell's standard output to the pipe. */ |
| if (dup2(spell_fd[1], STDOUT_FILENO) != STDOUT_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(spell_fd[1]); |
| |
| /* Start the spell program; we are using $PATH. */ |
| execlp("spell", "spell", NULL); |
| |
| /* This should not be reached if spell is found. */ |
| exit(1); |
| } |
| |
| /* Parent continues here. */ |
| close(spell_fd[1]); |
| |
| /* A new process to run sort in. */ |
| if ((pid_sort = fork()) == 0) { |
| /* Child continues (i.e. future spell process). Replace the |
| * standard input with the standard output of the old pipe. */ |
| if (dup2(spell_fd[0], STDIN_FILENO) != STDIN_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(spell_fd[0]); |
| |
| /* Send sort's standard output to the new pipe. */ |
| if (dup2(sort_fd[1], STDOUT_FILENO) != STDOUT_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(sort_fd[1]); |
| |
| /* Start the sort program. Use -f to remove mixed case. If |
| * this isn't portable, let me know. */ |
| execlp("sort", "sort", "-f", NULL); |
| |
| /* This should not be reached if sort is found. */ |
| exit(1); |
| } |
| |
| close(spell_fd[0]); |
| close(sort_fd[1]); |
| |
| /* A new process to run uniq in. */ |
| if ((pid_uniq = fork()) == 0) { |
| /* Child continues (i.e. future uniq process). Replace the |
| * standard input with the standard output of the old pipe. */ |
| if (dup2(sort_fd[0], STDIN_FILENO) != STDIN_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(sort_fd[0]); |
| |
| /* Send uniq's standard output to the new pipe. */ |
| if (dup2(uniq_fd[1], STDOUT_FILENO) != STDOUT_FILENO) |
| goto close_pipes_and_exit; |
| |
| close(uniq_fd[1]); |
| |
| /* Start the uniq program; we are using PATH. */ |
| execlp("uniq", "uniq", NULL); |
| |
| /* This should not be reached if uniq is found. */ |
| exit(1); |
| } |
| |
| close(sort_fd[0]); |
| close(uniq_fd[1]); |
| |
| /* The child process was not forked successfully. */ |
| if (pid_spell < 0 || pid_sort < 0 || pid_uniq < 0) { |
| close(uniq_fd[0]); |
| return _("Could not fork"); |
| } |
| |
| /* Get the system pipe buffer size. */ |
| if ((pipe_buff_size = fpathconf(uniq_fd[0], _PC_PIPE_BUF)) < 1) { |
| close(uniq_fd[0]); |
| return _("Could not get size of pipe buffer"); |
| } |
| |
| /* Read in the returned spelling errors. */ |
| read_buff_read = 0; |
| read_buff_size = pipe_buff_size + 1; |
| read_buff = read_buff_ptr = charalloc(read_buff_size); |
| |
| while ((bytesread = read(uniq_fd[0], read_buff_ptr, |
| pipe_buff_size)) > 0) { |
| read_buff_read += bytesread; |
| read_buff_size += pipe_buff_size; |
| read_buff = read_buff_ptr = charealloc(read_buff, |
| read_buff_size); |
| read_buff_ptr += read_buff_read; |
| } |
| |
| *read_buff_ptr = '\0'; |
| close(uniq_fd[0]); |
| |
| /* Process the spelling errors. */ |
| read_buff_word = read_buff_ptr = read_buff; |
| |
| while (*read_buff_ptr != '\0') { |
| if ((*read_buff_ptr == '\r') || (*read_buff_ptr == '\n')) { |
| *read_buff_ptr = '\0'; |
| if (read_buff_word != read_buff_ptr) { |
| if (!do_int_spell_fix(read_buff_word)) { |
| read_buff_word = read_buff_ptr; |
| break; |
| } |
| } |
| read_buff_word = read_buff_ptr + 1; |
| } |
| read_buff_ptr++; |
| } |
| |
| /* Special case: the last word doesn't end with '\r' or '\n'. */ |
| if (read_buff_word != read_buff_ptr) |
| do_int_spell_fix(read_buff_word); |
| |
| free(read_buff); |
| search_replace_abort(); |
| edit_refresh(); |
| |
| /* Process the end of the spell process. */ |
| waitpid(pid_spell, &spell_status, 0); |
| waitpid(pid_sort, &sort_status, 0); |
| waitpid(pid_uniq, &uniq_status, 0); |
| |
| if (WIFEXITED(spell_status) == 0 || WEXITSTATUS(spell_status)) |
| return _("Error invoking \"spell\""); |
| |
| if (WIFEXITED(sort_status) == 0 || WEXITSTATUS(sort_status)) |
| return _("Error invoking \"sort -f\""); |
| |
| if (WIFEXITED(uniq_status) == 0 || WEXITSTATUS(uniq_status)) |
| return _("Error invoking \"uniq\""); |
| |
| /* Otherwise... */ |
| return NULL; |
| |
| close_pipes_and_exit: |
| /* Don't leak any handles. */ |
| close(tempfile_fd); |
| close(spell_fd[0]); |
| close(spell_fd[1]); |
| close(sort_fd[0]); |
| close(sort_fd[1]); |
| close(uniq_fd[0]); |
| close(uniq_fd[1]); |
| exit(1); |
| } |
| |
| /* External (alternate) spell checking. Return NULL for normal |
| * termination, and the error string otherwise. */ |
| const char *do_alt_speller(char *tempfile_name) |
| { |
| int alt_spell_status; |
| size_t current_x_save = openfile->current_x; |
| size_t pww_save = openfile->placewewant; |
| ssize_t current_y_save = openfile->current_y; |
| ssize_t lineno_save = openfile->current->lineno; |
| pid_t pid_spell; |
| char *ptr; |
| static int arglen = 3; |
| static char **spellargs = NULL; |
| #ifndef NANO_TINY |
| bool old_mark_set = openfile->mark_set; |
| bool added_magicline = FALSE; |
| /* Whether we added a magicline after filebot. */ |
| bool right_side_up = FALSE; |
| /* TRUE if (mark_begin, mark_begin_x) is the top of the mark, |
| * FALSE if (current, current_x) is. */ |
| filestruct *top, *bot; |
| size_t top_x, bot_x; |
| ssize_t mb_lineno_save = 0; |
| /* We're going to close the current file, and open the output of |
| * the alternate spell command. The line that mark_begin points |
| * to will be freed, so we save the line number and restore it |
| * afterwards. */ |
| size_t totsize_save = openfile->totsize; |
| /* Our saved value of totsize, used when we spell-check a marked |
| * selection. */ |
| |
| if (old_mark_set) { |
| /* If the mark is on, save the number of the line it starts on, |
| * and then turn the mark off. */ |
| mb_lineno_save = openfile->mark_begin->lineno; |
| openfile->mark_set = FALSE; |
| } |
| #endif |
| |
| endwin(); |
| |
| /* Set up an argument list to pass execvp(). */ |
| if (spellargs == NULL) { |
| spellargs = (char **)nmalloc(arglen * sizeof(char *)); |
| |
| spellargs[0] = strtok(alt_speller, " "); |
| while ((ptr = strtok(NULL, " ")) != NULL) { |
| arglen++; |
| spellargs = (char **)nrealloc(spellargs, arglen * |
| sizeof(char *)); |
| spellargs[arglen - 3] = ptr; |
| } |
| spellargs[arglen - 1] = NULL; |
| } |
| spellargs[arglen - 2] = tempfile_name; |
| |
| /* Start a new process for the alternate speller. */ |
| if ((pid_spell = fork()) == 0) { |
| /* Start alternate spell program; we are using $PATH. */ |
| execvp(spellargs[0], spellargs); |
| |
| /* Should not be reached, if alternate speller is found!!! */ |
| exit(1); |
| } |
| |
| /* If we couldn't fork, get out. */ |
| if (pid_spell < 0) |
| return _("Could not fork"); |
| |
| #ifndef NANO_TINY |
| /* Don't handle a pending SIGWINCH until the alternate spell checker |
| * is finished and we've loaded the spell-checked file back in. */ |
| allow_pending_sigwinch(FALSE); |
| #endif |
| |
| /* Wait for the alternate spell checker to finish. */ |
| wait(&alt_spell_status); |
| |
| /* Reenter curses mode. */ |
| doupdate(); |
| |
| /* Restore the terminal to its previous state. */ |
| terminal_init(); |
| |
| /* Turn the cursor back on for sure. */ |
| curs_set(1); |
| |
| /* The screen might have been resized. If it has, reinitialize all |
| * the windows based on the new screen dimensions. */ |
| window_init(); |
| |
| if (!WIFEXITED(alt_spell_status) || |
| WEXITSTATUS(alt_spell_status) != 0) { |
| char *altspell_error; |
| char *invoke_error = _("Error invoking \"%s\""); |
| |
| #ifndef NANO_TINY |
| /* Turn the mark back on if it was on before. */ |
| openfile->mark_set = old_mark_set; |
| #endif |
| |
| altspell_error = |
| charalloc(strlen(invoke_error) + |
| strlen(alt_speller) + 1); |
| sprintf(altspell_error, invoke_error, alt_speller); |
| return altspell_error; |
| } |
| |
| #ifndef NANO_TINY |
| if (old_mark_set) { |
| /* If the mark is on, partition the filestruct so that it |
| * contains only the marked text; if the NO_NEWLINES flag isn't |
| * set, keep track of whether the text will have a magicline |
| * added when we're done correcting misspelled words; and |
| * turn the mark off. */ |
| mark_order((const filestruct **)&top, &top_x, |
| (const filestruct **)&bot, &bot_x, &right_side_up); |
| filepart = partition_filestruct(top, top_x, bot, bot_x); |
| if (!ISSET(NO_NEWLINES)) |
| added_magicline = (openfile->filebot->data[0] != '\0'); |
| |
| /* Get the number of characters in the marked text, and subtract |
| * it from the saved value of totsize. */ |
| totsize_save -= get_totsize(top, bot); |
| } |
| #endif |
| |
| /* Replace the text of the current buffer with the spell-checked |
| * text. */ |
| replace_buffer(tempfile_name); |
| |
| #ifndef NANO_TINY |
| if (old_mark_set) { |
| filestruct *top_save = openfile->fileage; |
| |
| /* If the mark was on, the NO_NEWLINES flag isn't set, and we |
| * added a magicline, remove it now. */ |
| if (!ISSET(NO_NEWLINES) && added_magicline) |
| remove_magicline(); |
| |
| /* Put the beginning and the end of the mark at the beginning |
| * and the end of the spell-checked text. */ |
| if (openfile->fileage == openfile->filebot) |
| bot_x += top_x; |
| if (right_side_up) { |
| openfile->mark_begin_x = top_x; |
| current_x_save = bot_x; |
| } else { |
| current_x_save = top_x; |
| openfile->mark_begin_x = bot_x; |
| } |
| |
| /* Unpartition the filestruct so that it contains all the text |
| * again. Note that we've replaced the marked text originally |
| * in the partition with the spell-checked marked text in the |
| * temp file. */ |
| unpartition_filestruct(&filepart); |
| |
| /* Renumber starting with the beginning line of the old |
| * partition. Also add the number of characters in the |
| * spell-checked marked text to the saved value of totsize, and |
| * then make that saved value the actual value. */ |
| renumber(top_save); |
| totsize_save += openfile->totsize; |
| openfile->totsize = totsize_save; |
| |
| /* Assign mark_begin to the line where the mark began before. */ |
| do_gotopos(mb_lineno_save, openfile->mark_begin_x, |
| current_y_save, 0); |
| openfile->mark_begin = openfile->current; |
| |
| /* Assign mark_begin_x to the location in mark_begin where the |
| * mark began before, adjusted for any shortening of the |
| * line. */ |
| openfile->mark_begin_x = openfile->current_x; |
| |
| /* Turn the mark back on. */ |
| openfile->mark_set = TRUE; |
| } |
| #endif |
| |
| /* Go back to the old position, and mark the file as modified. */ |
| do_gotopos(lineno_save, current_x_save, current_y_save, pww_save); |
| set_modified(); |
| |
| #ifndef NANO_TINY |
| /* Handle a pending SIGWINCH again. */ |
| allow_pending_sigwinch(TRUE); |
| #endif |
| |
| return NULL; |
| } |
| |
| /* Spell check the current file. If an alternate spell checker is |
| * specified, use it. Otherwise, use the internal spell checker. */ |
| void do_spell(void) |
| { |
| int i; |
| FILE *temp_file; |
| char *temp = safe_tempfile(&temp_file); |
| const char *spell_msg; |
| |
| if (temp == NULL) { |
| statusbar(_("Error writing temp file: %s"), strerror(errno)); |
| return; |
| } |
| |
| #ifndef NANO_TINY |
| if (openfile->mark_set) |
| i = write_marked_file(temp, temp_file, TRUE, OVERWRITE); |
| else |
| #endif |
| i = write_file(temp, temp_file, TRUE, OVERWRITE, FALSE); |
| |
| if (i == -1) { |
| statusbar(_("Error writing temp file: %s"), strerror(errno)); |
| free(temp); |
| return; |
| } |
| |
| spell_msg = (alt_speller != NULL) ? do_alt_speller(temp) : |
| do_int_speller(temp); |
| unlink(temp); |
| free(temp); |
| |
| currshortcut = main_list; |
| |
| /* If the spell-checker printed any error messages onscreen, make |
| * sure that they're cleared off. */ |
| total_refresh(); |
| |
| if (spell_msg != NULL) { |
| if (errno == 0) |
| /* Don't display an error message of "Success". */ |
| statusbar(_("Spell checking failed: %s"), spell_msg); |
| else |
| statusbar(_("Spell checking failed: %s: %s"), spell_msg, |
| strerror(errno)); |
| } else |
| statusbar(_("Finished checking spelling")); |
| } |
| #endif /* !DISABLE_SPELLER */ |
| |
| #ifndef NANO_TINY |
| /* Our own version of "wc". Note that its character counts are in |
| * multibyte characters instead of single-byte characters. */ |
| void do_wordlinechar_count(void) |
| { |
| size_t words = 0, chars = 0; |
| ssize_t lines = 0; |
| size_t current_x_save = openfile->current_x; |
| size_t pww_save = openfile->placewewant; |
| filestruct *current_save = openfile->current; |
| bool old_mark_set = openfile->mark_set; |
| filestruct *top, *bot; |
| size_t top_x, bot_x; |
| |
| if (old_mark_set) { |
| /* If the mark is on, partition the filestruct so that it |
| * contains only the marked text, and turn the mark off. */ |
| mark_order((const filestruct **)&top, &top_x, |
| (const filestruct **)&bot, &bot_x, NULL); |
| filepart = partition_filestruct(top, top_x, bot, bot_x); |
| openfile->mark_set = FALSE; |
| } |
| |
| /* Start at the top of the file. */ |
| openfile->current = openfile->fileage; |
| openfile->current_x = 0; |
| openfile->placewewant = 0; |
| |
| /* Keep moving to the next word (counting punctuation characters as |
| * part of a word, as "wc -w" does), without updating the screen, |
| * until we reach the end of the file, incrementing the total word |
| * count whenever we're on a word just before moving. */ |
| while (openfile->current != openfile->filebot || |
| openfile->current->data[openfile->current_x] != '\0') { |
| if (do_next_word(TRUE, FALSE)) |
| words++; |
| } |
| |
| /* Get the total line and character counts, as "wc -l" and "wc -c" |
| * do, but get the latter in multibyte characters. */ |
| if (old_mark_set) { |
| lines = openfile->filebot->lineno - |
| openfile->fileage->lineno + 1; |
| chars = get_totsize(openfile->fileage, openfile->filebot); |
| |
| /* Unpartition the filestruct so that it contains all the text |
| * again, and turn the mark back on. */ |
| unpartition_filestruct(&filepart); |
| openfile->mark_set = TRUE; |
| } else { |
| lines = openfile->filebot->lineno; |
| chars = openfile->totsize; |
| } |
| |
| /* Restore where we were. */ |
| openfile->current = current_save; |
| openfile->current_x = current_x_save; |
| openfile->placewewant = pww_save; |
| |
| /* Display the total word, line, and character counts on the |
| * statusbar. */ |
| statusbar(_("%sWords: %lu Lines: %ld Chars: %lu"), old_mark_set ? |
| _("In Selection: ") : "", (unsigned long)words, (long)lines, |
| (unsigned long)chars); |
| } |
| #endif /* !NANO_TINY */ |
| |
| /* Get verbatim input. */ |
| void do_verbatim_input(void) |
| { |
| int *kbinput; |
| size_t kbinput_len, i; |
| char *output; |
| |
| /* TRANSLATORS: This is displayed when the next keystroke will be |
| * inserted verbatim. */ |
| statusbar(_("Verbatim Input")); |
| |
| /* Read in all the verbatim characters. */ |
| kbinput = get_verbatim_kbinput(edit, &kbinput_len); |
| |
| /* If constant cursor position display is on, make sure the current |
| * cursor position will be properly displayed on the statusbar. |
| * Otherwise, blank the statusbar. */ |
| if (ISSET(CONST_UPDATE)) |
| do_cursorpos(TRUE); |
| else { |
| blank_statusbar(); |
| wnoutrefresh(bottomwin); |
| } |
| |
| /* Display all the verbatim characters at once, not filtering out |
| * control characters. */ |
| output = charalloc(kbinput_len + 1); |
| |
| for (i = 0; i < kbinput_len; i++) |
| output[i] = (char)kbinput[i]; |
| output[i] = '\0'; |
| |
| do_output(output, kbinput_len, TRUE); |
| |
| free(output); |
| } |