| /* $Id$ */ |
| /************************************************************************** |
| * winio.c * |
| * * |
| * Copyright (C) 1999-2003 Chris Allegretta * |
| * This program is free software; you can redistribute it and/or modify * |
| * it under the terms of the GNU General Public License as published by * |
| * the Free Software Foundation; either version 2, or (at your option) * |
| * any later version. * |
| * * |
| * This program is distributed in the hope that it will be useful, * |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| * GNU General Public License for more details. * |
| * * |
| * You should have received a copy of the GNU General Public License * |
| * along with this program; if not, write to the Free Software * |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * |
| * * |
| **************************************************************************/ |
| |
| #include "config.h" |
| |
| #include <stdarg.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <ctype.h> |
| #include <assert.h> |
| #include "proto.h" |
| #include "nano.h" |
| |
| static int statblank = 0; /* Number of keystrokes left after |
| we call statusbar(), before we |
| actually blank the statusbar */ |
| |
| /* Read in a single input character. If it's ignored, swallow it and go |
| * on. Otherwise, try to translate it from ASCII and extended (keypad) |
| * input. Assume nodelay(win) is FALSE. */ |
| int get_kbinput(WINDOW *win, int *meta, int rebind_delete) |
| { |
| int kbinput, retval; |
| |
| kbinput = get_ignored_kbinput(win); |
| retval = get_accepted_kbinput(win, kbinput, meta, rebind_delete); |
| |
| return retval; |
| } |
| |
| /* Read in a string of input characters (e. g. an escape sequence) |
| * verbatim, and return the length of the string in kbinput_len. Assume |
| * nodelay(win) is FALSE. */ |
| char *get_verbatim_kbinput(WINDOW *win, int *kbinput_len) |
| { |
| char *verbatim_kbinput; |
| int kbinput = wgetch(win); |
| |
| verbatim_kbinput = charalloc(1); |
| verbatim_kbinput[0] = kbinput; |
| *kbinput_len = 1; |
| |
| if (kbinput >= '0' && kbinput <= '2') |
| /* Entering a three-digit decimal ASCII code from 000-255 in |
| * verbatim mode will produce the corresponding ASCII |
| * character. */ |
| verbatim_kbinput[0] = (char)get_ascii_kbinput(win, kbinput); |
| else { |
| nodelay(win, TRUE); |
| while ((kbinput = wgetch(win)) != ERR) { |
| (*kbinput_len)++; |
| verbatim_kbinput = charealloc(verbatim_kbinput, *kbinput_len); |
| verbatim_kbinput[*kbinput_len - 1] = (char)kbinput; |
| } |
| nodelay(win, FALSE); |
| } |
| |
| #ifdef DEBUG |
| fprintf(stderr, "get_verbatim_kbinput(): verbatim_kbinput = %s\n", verbatim_kbinput); |
| #endif |
| return verbatim_kbinput; |
| } |
| |
| /* Swallow input characters that should be quietly ignored, and return |
| * the first input character that shouldn't be. */ |
| int get_ignored_kbinput(WINDOW *win) |
| { |
| int kbinput; |
| |
| while (1) { |
| kbinput = wgetch(win); |
| switch (kbinput) { |
| case ERR: |
| case KEY_RESIZE: |
| #ifdef PDCURSES |
| case KEY_SHIFT_L: |
| case KEY_SHIFT_R: |
| case KEY_CONTROL_L: |
| case KEY_CONTROL_R: |
| case KEY_ALT_L: |
| case KEY_ALT_R: |
| #endif |
| #ifdef DEBUG |
| fprintf(stderr, "get_ignored_kbinput(): kbinput = %d\n", kbinput); |
| #endif |
| break; |
| default: |
| return kbinput; |
| } |
| } |
| } |
| |
| /* Translate acceptable ASCII and extended (keypad) input. Set meta to |
| * 1 if we get a Meta sequence. Assume nodelay(win) is FALSE. */ |
| int get_accepted_kbinput(WINDOW *win, int kbinput, int *meta, |
| int rebind_delete) |
| { |
| *meta = 0; |
| |
| switch (kbinput) { |
| case NANO_CONTROL_3: /* Escape */ |
| switch (kbinput = wgetch(win)) { |
| case NANO_CONTROL_3: /* Escape */ |
| kbinput = wgetch(win); |
| /* Esc Esc [three-digit decimal ASCII code from |
| * 000-255] == [corresponding ASCII character]; |
| Esc Esc 2 obviously can't be Ctrl-2 here */ |
| if (kbinput >= '0' && kbinput <= '2') |
| kbinput = get_ascii_kbinput(win, kbinput); |
| /* Esc Esc [character] == Ctrl-[character]; |
| * Ctrl-Space (Ctrl-2) == Ctrl-@ == Ctrl-` */ |
| else if (kbinput == ' ' || kbinput == '@' || kbinput == '`') |
| kbinput = NANO_CONTROL_SPACE; |
| /* Ctrl-3 (Ctrl-[, Esc) to Ctrl-7 (Ctrl-_) */ |
| else if (kbinput >= '3' && kbinput <= '7') |
| kbinput -= 24; |
| /* Ctrl-8 (Ctrl-?) */ |
| else if (kbinput == '8' || kbinput == '?') |
| kbinput = NANO_CONTROL_8; |
| /* Ctrl-A to Ctrl-_ */ |
| else if (kbinput >= 'A' && kbinput <= '_') |
| kbinput -= 64; |
| /* Ctrl-A to Ctrl-~ */ |
| else if (kbinput >= 'a' && kbinput <= '~') |
| kbinput -= 96; |
| break; |
| /* Terminal breakage, part 1: We shouldn't get an escape |
| * sequence here for terminals that support Delete, but |
| * we do sometimes on FreeBSD. Thank you, Wouter van |
| * Hemel. */ |
| case '[': |
| nodelay(win, TRUE); |
| kbinput = wgetch(win); |
| switch (kbinput) { |
| case ERR: |
| kbinput = '['; |
| *meta = 1; |
| break; |
| default: |
| kbinput = get_escape_seq_kbinput(win, kbinput); |
| } |
| nodelay(win, FALSE); |
| break; |
| default: |
| /* Esc [character] == Meta-[character] */ |
| kbinput = tolower(kbinput); |
| *meta = 1; |
| } |
| break; |
| case KEY_DOWN: |
| kbinput = NANO_DOWN_KEY; |
| break; |
| case KEY_UP: |
| kbinput = NANO_UP_KEY; |
| break; |
| case KEY_LEFT: |
| kbinput = NANO_BACK_KEY; |
| break; |
| case KEY_RIGHT: |
| kbinput = NANO_FORWARD_KEY; |
| break; |
| case KEY_HOME: |
| kbinput = NANO_HOME_KEY; |
| break; |
| case KEY_BACKSPACE: |
| kbinput = NANO_BACKSPACE_KEY; |
| break; |
| case KEY_DC: |
| /* Terminal breakage, part 2: We should only get KEY_DC when |
| * hitting Delete, but we get it when hitting Backspace |
| * sometimes on FreeBSD. Thank you, Lee Nelson. */ |
| kbinput = (rebind_delete) ? NANO_BACKSPACE_KEY : NANO_DELETE_KEY; |
| break; |
| case KEY_IC: |
| kbinput = NANO_INSERTFILE_KEY; |
| break; |
| case KEY_NPAGE: |
| kbinput = NANO_NEXTPAGE_KEY; |
| break; |
| case KEY_PPAGE: |
| kbinput = NANO_PREVPAGE_KEY; |
| break; |
| case KEY_ENTER: |
| kbinput = NANO_ENTER_KEY; |
| break; |
| case KEY_END: |
| kbinput = NANO_END_KEY; |
| break; |
| case KEY_SUSPEND: |
| kbinput = NANO_SUSPEND_KEY; |
| break; |
| } |
| #ifdef DEBUG |
| fprintf(stderr, "get_accepted_kbinput(): kbinput = %d, meta = %d\n", kbinput, *meta); |
| #endif |
| return kbinput; |
| } |
| |
| /* Translate a three-digit decimal ASCII code from 000-255 into the |
| * corresponding ASCII character. */ |
| int get_ascii_kbinput(WINDOW *win, int kbinput) |
| { |
| int retval; |
| |
| switch (kbinput) { |
| case '0': |
| case '1': |
| case '2': |
| retval = (kbinput - 48) * 100; |
| break; |
| default: |
| return kbinput; |
| } |
| |
| kbinput = wgetch(win); |
| switch (kbinput) { |
| case '0': |
| case '1': |
| case '2': |
| case '3': |
| case '4': |
| case '5': |
| retval += (kbinput - 48) * 10; |
| break; |
| case '6': |
| case '7': |
| case '8': |
| case '9': |
| if (retval < 200) { |
| retval += (kbinput - 48) * 10; |
| break; |
| } |
| default: |
| return kbinput; |
| } |
| |
| kbinput = wgetch(win); |
| switch (kbinput) { |
| case '0': |
| case '1': |
| case '2': |
| case '3': |
| case '4': |
| case '5': |
| retval += kbinput - 48; |
| break; |
| case '6': |
| case '7': |
| case '8': |
| case '9': |
| if (retval < 250) { |
| retval += kbinput - 48; |
| break; |
| } |
| default: |
| return kbinput; |
| } |
| |
| #ifdef DEBUG |
| fprintf(stderr, "get_ascii_kbinput(): kbinput = %d\n", kbinput); |
| #endif |
| return retval; |
| } |
| |
| /* Translate common escape sequences for some keys. These are generated |
| * when the terminal doesn't support those keys. Assume nodelay(win) is |
| * TRUE. */ |
| int get_escape_seq_kbinput(WINDOW *win, int kbinput) |
| { |
| switch (kbinput) { |
| case '3': |
| /* Esc [ 3 ~ == kdch1 on many terminals. */ |
| kbinput = get_skip_tilde_kbinput(win, kbinput, NANO_DELETE_KEY); |
| break; |
| } |
| return kbinput; |
| } |
| |
| /* If there is no next character, return the passed-in error value. If |
| * the next character's a tilde, eat it and return the passed-in |
| * return value. Otherwise, return the next character. Assume |
| * nodelay(win) is TRUE. */ |
| int get_skip_tilde_kbinput(WINDOW *win, int errval, int retval) |
| { |
| int kbinput = wgetch(win); |
| switch (kbinput) { |
| case ERR: |
| return errval; |
| case '~': |
| return retval; |
| default: |
| return kbinput; |
| } |
| } |
| |
| int do_first_line(void) |
| { |
| current = fileage; |
| placewewant = 0; |
| current_x = 0; |
| edit_update(current, TOP); |
| return 1; |
| } |
| |
| int do_last_line(void) |
| { |
| current = filebot; |
| placewewant = 0; |
| current_x = 0; |
| edit_update(current, CENTER); |
| return 1; |
| } |
| |
| /* Return the placewewant associated with current_x. That is, xplustabs |
| * is the zero-based column position of the cursor. Value is no smaller |
| * than current_x. */ |
| size_t xplustabs(void) |
| { |
| return strnlenpt(current->data, current_x); |
| } |
| |
| /* actual_x() gives the index in str of the character displayed at |
| * column xplus. That is, actual_x() is the largest value such that |
| * strnlenpt(str, actual_x(str, xplus)) <= xplus. */ |
| size_t actual_x(const char *str, size_t xplus) |
| { |
| size_t i = 0; |
| /* the position in str, returned */ |
| size_t length = 0; |
| /* the screen display width to str[i] */ |
| |
| assert(str != NULL); |
| |
| for (; length < xplus && *str != '\0'; i++, str++) { |
| if (*str == '\t') |
| length += tabsize - (length % tabsize); |
| else if (is_cntrl_char((int)*str)) |
| length += 2; |
| else |
| length++; |
| } |
| assert(length == strnlenpt(str - i, i)); |
| assert(i <= strlen(str - i)); |
| |
| if (length > xplus) |
| i--; |
| |
| return i; |
| } |
| |
| /* A strlen with tabs factored in, similar to xplustabs(). How many |
| * columns wide are the first size characters of buf? */ |
| size_t strnlenpt(const char *buf, size_t size) |
| { |
| size_t length = 0; |
| |
| assert(buf != NULL); |
| for (; *buf != '\0' && size != 0; size--, buf++) { |
| if (*buf == '\t') |
| length += tabsize - (length % tabsize); |
| else if (is_cntrl_char((int)*buf)) |
| length += 2; |
| else |
| length++; |
| } |
| return length; |
| } |
| |
| /* How many columns wide is buf? */ |
| size_t strlenpt(const char *buf) |
| { |
| return strnlenpt(buf, -1); |
| } |
| |
| void blank_bottombars(void) |
| { |
| if (!ISSET(NO_HELP)) { |
| mvwaddstr(bottomwin, 1, 0, hblank); |
| mvwaddstr(bottomwin, 2, 0, hblank); |
| } |
| } |
| |
| void blank_bottomwin(void) |
| { |
| if (ISSET(NO_HELP)) |
| return; |
| |
| mvwaddstr(bottomwin, 1, 0, hblank); |
| mvwaddstr(bottomwin, 2, 0, hblank); |
| } |
| |
| void blank_edit(void) |
| { |
| int i; |
| for (i = 0; i < editwinrows; i++) |
| mvwaddstr(edit, i, 0, hblank); |
| } |
| |
| void blank_statusbar(void) |
| { |
| mvwaddstr(bottomwin, 0, 0, hblank); |
| } |
| |
| void blank_statusbar_refresh(void) |
| { |
| blank_statusbar(); |
| wrefresh(bottomwin); |
| } |
| |
| void check_statblank(void) |
| { |
| if (statblank > 1) |
| statblank--; |
| else if (statblank == 1 && !ISSET(CONSTUPDATE)) { |
| statblank--; |
| blank_statusbar_refresh(); |
| } |
| } |
| |
| /* Convert buf into a string that can be displayed on screen. The |
| * caller wants to display buf starting with column start_col, and |
| * extending for at most len columns. start_col is zero-based. len is |
| * one-based, so len == 0 means you get "" returned. The returned |
| * string is dynamically allocated, and should be freed. */ |
| char *display_string(const char *buf, size_t start_col, int len) |
| { |
| size_t start_index; |
| /* Index in buf of first character shown in return value. */ |
| size_t column; |
| /* Screen column start_index corresponds to. */ |
| size_t end_index; |
| /* Index in buf of last character shown in return value. */ |
| size_t alloc_len; |
| /* The length of memory allocated for converted. */ |
| char *converted; |
| /* The string we return. */ |
| size_t index; |
| /* Current position in converted. */ |
| |
| if (len == 0) |
| return mallocstrcpy(NULL, ""); |
| |
| start_index = actual_x(buf, start_col); |
| column = strnlenpt(buf, start_index); |
| assert(column <= start_col); |
| end_index = actual_x(buf, start_col + len - 1); |
| alloc_len = strnlenpt(buf, end_index + 1) - column; |
| if (len > alloc_len + column - start_col) |
| len = alloc_len + column - start_col; |
| converted = charalloc(alloc_len + 1); |
| buf += start_index; |
| index = 0; |
| |
| for (; index < alloc_len; buf++) { |
| if (*buf == '\t') |
| do { |
| converted[index++] = ' '; |
| } while ((column + index) % tabsize); |
| else if (is_cntrl_char(*buf)) { |
| converted[index++] = '^'; |
| if (*buf == '\n') |
| /* Treat newlines embedded in a line as encoded nulls; |
| * the line in question should be run through unsunder() |
| * before reaching here. */ |
| converted[index++] = '@'; |
| else if (*buf == NANO_CONTROL_8) |
| converted[index++] = '?'; |
| else |
| converted[index++] = *buf + 64; |
| } else |
| converted[index++] = *buf; |
| } |
| assert(len <= alloc_len + column - start_col); |
| charmove(converted, converted + start_col - column, len); |
| null_at(&converted, len); |
| |
| return charealloc(converted, len + 1); |
| } |
| |
| /* Repaint the statusbar when getting a character in nanogetstr(). buf |
| * should be no longer than max(0, COLS - 4). |
| * |
| * Note that we must turn on A_REVERSE here, since do_help() turns it |
| * off! */ |
| void nanoget_repaint(const char *buf, const char *inputbuf, size_t x) |
| { |
| size_t x_real = strnlenpt(inputbuf, x); |
| int wid = COLS - strlen(buf) - 2; |
| |
| assert(0 <= x && x <= strlen(inputbuf)); |
| |
| wattron(bottomwin, A_REVERSE); |
| blank_statusbar(); |
| |
| mvwaddstr(bottomwin, 0, 0, buf); |
| waddch(bottomwin, ':'); |
| |
| if (COLS > 1) |
| waddch(bottomwin, x_real < wid ? ' ' : '$'); |
| if (COLS > 2) { |
| size_t page_start = x_real - x_real % wid; |
| char *expanded = display_string(inputbuf, page_start, wid); |
| |
| assert(wid > 0); |
| assert(strlen(expanded) <= wid); |
| waddstr(bottomwin, expanded); |
| free(expanded); |
| wmove(bottomwin, 0, COLS - wid + x_real - page_start); |
| } else |
| wmove(bottomwin, 0, COLS - 1); |
| wattroff(bottomwin, A_REVERSE); |
| } |
| |
| /* Get the input from the kb; this should only be called from |
| * statusq(). */ |
| int nanogetstr(int allowtabs, const char *buf, const char *def, |
| #ifndef NANO_SMALL |
| historyheadtype *history_list, |
| #endif |
| const shortcut *s |
| #ifndef DISABLE_TABCOMP |
| , int *list |
| #endif |
| ) |
| { |
| int kbinput; |
| int meta; |
| static int x = -1; |
| /* the cursor position in 'answer' */ |
| int xend; |
| /* length of 'answer', the status bar text */ |
| int tabbed = 0; |
| /* used by input_tab() */ |
| const shortcut *t; |
| |
| #ifndef NANO_SMALL |
| /* for history */ |
| char *history = NULL; |
| char *currentbuf = NULL; |
| char *complete = NULL; |
| int last_kbinput = 0; |
| |
| /* This variable is used in the search history code. use_cb == 0 |
| means that we're using the existing history and ignoring |
| currentbuf. use_cb == 1 means that the entry in answer should be |
| moved to currentbuf or restored from currentbuf to answer. |
| use_cb == 2 means that the entry in currentbuf should be moved to |
| answer or restored from answer to currentbuf. */ |
| int use_cb = 0; |
| #endif |
| xend = strlen(def); |
| |
| /* Only put x at the end of the string if it's uninitialized or if |
| it would be past the end of the string as it is. Otherwise, |
| leave it alone. This is so the cursor position stays at the same |
| place if a prompt-changing toggle is pressed. */ |
| if (x == -1 || x > xend || resetstatuspos) |
| x = xend; |
| |
| answer = charealloc(answer, xend + 1); |
| if (xend > 0) |
| strcpy(answer, def); |
| else |
| answer[0] = '\0'; |
| |
| #if !defined(DISABLE_HELP) || !defined(DISABLE_MOUSE) |
| currshortcut = s; |
| #endif |
| |
| /* Get the input! */ |
| |
| nanoget_repaint(buf, answer, x); |
| |
| /* Make sure any editor screen updates are displayed before getting |
| input */ |
| wrefresh(edit); |
| |
| while ((kbinput = get_kbinput(bottomwin, &meta, ISSET(REBIND_DELETE))) != NANO_ENTER_KEY) { |
| for (t = s; t != NULL; t = t->next) { |
| #ifdef DEBUG |
| fprintf(stderr, "Aha! \'%c\' (%d)\n", kbinput, kbinput); |
| #endif |
| |
| if (kbinput == t->val && (kbinput < 32 || kbinput == 127)) { |
| |
| #ifndef DISABLE_HELP |
| /* Have to do this here, it would be too late to do it |
| in statusq() */ |
| if (kbinput == NANO_HELP_KEY || kbinput == NANO_HELP_FKEY) { |
| do_help(); |
| break; |
| } |
| #endif |
| |
| return t->val; |
| } |
| } |
| assert(0 <= x && x <= xend && xend == strlen(answer)); |
| |
| if (kbinput != '\t') |
| tabbed = 0; |
| |
| switch (kbinput) { |
| #ifndef DISABLE_MOUSE |
| case KEY_MOUSE: |
| do_mouse(); |
| break; |
| #endif |
| case NANO_HOME_KEY: |
| x = 0; |
| break; |
| case NANO_END_KEY: |
| x = xend; |
| break; |
| case NANO_FORWARD_KEY: |
| if (x < xend) |
| x++; |
| break; |
| case NANO_DELETE_KEY: |
| if (x < xend) { |
| charmove(answer + x, answer + x + 1, xend - x); |
| xend--; |
| } |
| break; |
| case NANO_CUT_KEY: |
| case NANO_UNCUT_KEY: |
| null_at(&answer, 0); |
| xend = 0; |
| x = 0; |
| break; |
| case NANO_BACKSPACE_KEY: |
| if (x > 0) { |
| charmove(answer + x - 1, answer + x, xend - x + 1); |
| x--; |
| xend--; |
| } |
| break; |
| case NANO_TAB_KEY: |
| #ifndef NANO_SMALL |
| /* tab history completion */ |
| if (history_list != NULL) { |
| if (!complete || last_kbinput != NANO_TAB_KEY) { |
| history_list->current = (historytype *)history_list; |
| history_list->len = strlen(answer); |
| } |
| |
| if (history_list->len > 0) { |
| complete = get_history_completion(history_list, answer); |
| xend = strlen(complete); |
| x = xend; |
| answer = mallocstrcpy(answer, complete); |
| } |
| } |
| #ifndef DISABLE_TABCOMP |
| else |
| #endif |
| #endif |
| #ifndef DISABLE_TABCOMP |
| if (allowtabs) { |
| int shift = 0; |
| |
| answer = input_tab(answer, x, &tabbed, &shift, list); |
| xend = strlen(answer); |
| x += shift; |
| if (x > xend) |
| x = xend; |
| } |
| #endif |
| break; |
| case NANO_BACK_KEY: |
| if (x > 0) |
| x--; |
| break; |
| case NANO_UP_KEY: |
| #ifndef NANO_SMALL |
| if (history_list != NULL) { |
| |
| /* if currentbuf is NULL, or if use_cb is 1, currentbuf |
| isn't NULL, and currentbuf is different from answer, |
| it means that we're scrolling up at the top of the |
| search history, and we need to save the current |
| answer in currentbuf; do this and reset use_cb to |
| 0 */ |
| if (currentbuf == NULL || (use_cb == 1 && strcmp(currentbuf, answer))) { |
| currentbuf = mallocstrcpy(currentbuf, answer); |
| use_cb = 0; |
| } |
| |
| /* if currentbuf isn't NULL, use_cb is 2, and currentbuf |
| is different from answer, it means that we're |
| scrolling up at the bottom of the search history, and |
| we need to make the string in currentbuf the current |
| answer; do this, blow away currentbuf since we don't |
| need it anymore, and reset use_cb to 0 */ |
| if (currentbuf != NULL && use_cb == 2 && strcmp(currentbuf, answer)) { |
| answer = mallocstrcpy(answer, currentbuf); |
| free(currentbuf); |
| currentbuf = NULL; |
| xend = strlen(answer); |
| use_cb = 0; |
| |
| /* else get older search from the history list and save |
| it in answer; if there is no older search, blank out |
| answer */ |
| } else if ((history = get_history_older(history_list)) != NULL) { |
| answer = mallocstrcpy(answer, history); |
| xend = strlen(history); |
| } else { |
| answer = mallocstrcpy(answer, ""); |
| xend = 0; |
| } |
| x = xend; |
| } |
| #endif |
| break; |
| case NANO_DOWN_KEY: |
| #ifndef NANO_SMALL |
| if (history_list != NULL) { |
| |
| /* get newer search from the history list and save it |
| in answer */ |
| if ((history = get_history_newer(history_list)) != NULL) { |
| answer = mallocstrcpy(answer, history); |
| xend = strlen(history); |
| |
| /* if there is no newer search, we're here */ |
| |
| /* if currentbuf isn't NULL and use_cb isn't 2, it means |
| that we're scrolling down at the bottom of the search |
| history and we need to make the string in currentbuf |
| the current answer; do this, blow away currentbuf |
| since we don't need it anymore, and set use_cb to |
| 1 */ |
| } else if (currentbuf != NULL && use_cb != 2) { |
| answer = mallocstrcpy(answer, currentbuf); |
| free(currentbuf); |
| currentbuf = NULL; |
| xend = strlen(answer); |
| use_cb = 1; |
| |
| /* otherwise, if currentbuf is NULL and use_cb isn't 2, |
| it means that we're scrolling down at the bottom of |
| the search history and the current answer (if it's |
| not blank) needs to be saved in currentbuf; do this, |
| blank out answer (if necessary), and set use_cb to |
| 2 */ |
| } else if (use_cb != 2) { |
| if (answer[0] != '\0') { |
| currentbuf = mallocstrcpy(currentbuf, answer); |
| answer = mallocstrcpy(answer, ""); |
| } |
| xend = 0; |
| use_cb = 2; |
| } |
| x = xend; |
| } |
| #endif |
| break; |
| default: |
| |
| for (t = s; t != NULL; t = t->next) { |
| #ifdef DEBUG |
| fprintf(stderr, "Aha! \'%c\' (%d)\n", kbinput, |
| kbinput); |
| #endif |
| if (meta == 1 && (kbinput == t->val || kbinput == t->val - 32)) |
| /* We hit an Alt key. Do like above. We don't |
| just ungetch() the letter and let it get |
| caught above cause that screws the |
| keypad... */ |
| return t->val; |
| } |
| |
| if (kbinput < 32 || kbinput == 127) |
| break; |
| answer = charealloc(answer, xend + 2); |
| charmove(answer + x + 1, answer + x, xend - x + 1); |
| xend++; |
| answer[x] = kbinput; |
| x++; |
| |
| #ifdef DEBUG |
| fprintf(stderr, "input \'%c\' (%d)\n", kbinput, kbinput); |
| #endif |
| } /* switch (kbinput) */ |
| #ifndef NANO_SMALL |
| last_kbinput = kbinput; |
| #endif |
| nanoget_repaint(buf, answer, x); |
| wrefresh(bottomwin); |
| } /* while (kbinput ...) */ |
| |
| /* We finished putting in an answer; reset x */ |
| x = -1; |
| |
| /* Just check for a blank answer here */ |
| if (answer[0] == '\0') |
| return -2; |
| else |
| return 0; |
| } |
| |
| /* If modified is not already set, set it and update titlebar. */ |
| void set_modified(void) |
| { |
| if (!ISSET(MODIFIED)) { |
| SET(MODIFIED); |
| titlebar(NULL); |
| wrefresh(topwin); |
| } |
| } |
| |
| void titlebar(const char *path) |
| { |
| int namelen, space; |
| const char *what = path; |
| |
| if (path == NULL) |
| what = filename; |
| |
| wattron(topwin, A_REVERSE); |
| |
| mvwaddstr(topwin, 0, 0, hblank); |
| mvwaddnstr(topwin, 0, 2, VERMSG, COLS - 3); |
| |
| space = COLS - sizeof(VERMSG) - 23; |
| |
| namelen = strlen(what); |
| |
| if (space > 0) { |
| if (what[0] == '\0') |
| mvwaddnstr(topwin, 0, COLS / 2 - 6, _("New Buffer"), |
| COLS / 2 + COLS % 2 - 6); |
| else if (namelen > space) { |
| if (path == NULL) |
| waddstr(topwin, _(" File: ...")); |
| else |
| waddstr(topwin, _(" DIR: ...")); |
| waddstr(topwin, &what[namelen - space]); |
| } else { |
| if (path == NULL) |
| mvwaddstr(topwin, 0, COLS / 2 - (namelen / 2 + 1), |
| _("File: ")); |
| else |
| mvwaddstr(topwin, 0, COLS / 2 - (namelen / 2 + 1), |
| _(" DIR: ")); |
| waddstr(topwin, what); |
| } |
| } /* If we don't have space, we shouldn't bother */ |
| if (ISSET(MODIFIED)) |
| mvwaddnstr(topwin, 0, COLS - 11, _(" Modified "), 11); |
| else if (ISSET(VIEW_MODE)) |
| mvwaddnstr(topwin, 0, COLS - 11, _(" View "), 11); |
| |
| wattroff(topwin, A_REVERSE); |
| |
| wrefresh(topwin); |
| reset_cursor(); |
| } |
| |
| void bottombars(const shortcut *s) |
| { |
| int i, j, numcols; |
| char keystr[9]; |
| int slen; |
| |
| if (ISSET(NO_HELP)) |
| return; |
| |
| if (s == main_list) { |
| slen = MAIN_VISIBLE; |
| assert(MAIN_VISIBLE <= length_of_list(s)); |
| } else |
| slen = length_of_list(s); |
| |
| /* There will be this many columns of shortcuts */ |
| numcols = (slen + (slen % 2)) / 2; |
| |
| blank_bottomwin(); |
| |
| for (i = 0; i < numcols; i++) { |
| for (j = 0; j <= 1; j++) { |
| |
| wmove(bottomwin, 1 + j, i * (COLS / numcols)); |
| |
| /* Yucky sentinel values we can't handle a better way */ |
| if (s->val == NANO_CONTROL_SPACE) |
| strcpy(keystr, "^ "); |
| #ifndef NANO_SMALL |
| else if (s->val == KEY_UP) |
| strncpy(keystr, _("Up"), 8); |
| #endif /* NANO_SMALL */ |
| else if (s->val > 0) { |
| if (s->val < 64) |
| sprintf(keystr, "^%c", s->val + 64); |
| else |
| sprintf(keystr, "M-%c", s->val - 32); |
| } else if (s->altval > 0) |
| sprintf(keystr, "M-%c", s->altval); |
| |
| onekey(keystr, s->desc, COLS / numcols); |
| |
| s = s->next; |
| if (s == NULL) |
| goto break_completely_out; |
| } |
| } |
| |
| break_completely_out: |
| wrefresh(bottomwin); |
| } |
| |
| /* Write a shortcut key to the help area at the bottom of the window. |
| * keystroke is e.g. "^G" and desc is e.g. "Get Help". |
| * We are careful to write exactly len characters, even if len is |
| * very small and keystroke and desc are long. */ |
| void onekey(const char *keystroke, const char *desc, int len) |
| { |
| wattron(bottomwin, A_REVERSE); |
| waddnstr(bottomwin, keystroke, len); |
| wattroff(bottomwin, A_REVERSE); |
| len -= strlen(keystroke); |
| if (len > 0) { |
| waddch(bottomwin, ' '); |
| len--; |
| waddnstr(bottomwin, desc, len); |
| len -= strlen(desc); |
| for (; len > 0; len--) |
| waddch(bottomwin, ' '); |
| } |
| } |
| |
| /* And so start the display update routines. */ |
| |
| #ifndef NDEBUG |
| int check_linenumbers(const filestruct *fileptr) |
| { |
| int check_line = 0; |
| const filestruct *filetmp; |
| |
| for (filetmp = edittop; filetmp != fileptr; filetmp = filetmp->next) |
| check_line++; |
| return check_line; |
| } |
| #endif |
| |
| /* nano scrolls horizontally within a line in chunks. This function |
| * returns the column number of the first character displayed in the |
| * window when the cursor is at the given column. Note that |
| * 0 <= column - get_page_start(column) < COLS. */ |
| size_t get_page_start(size_t column) |
| { |
| assert(COLS > 0); |
| if (column == 0 || column < COLS - 1) |
| return 0; |
| else if (COLS > 9) |
| return column - 7 - (column - 8) % (COLS - 9); |
| else if (COLS > 2) |
| return column - (COLS - 2); |
| else |
| return column - (COLS - 1); |
| /* The parentheses are necessary to avoid overflow. */ |
| } |
| |
| /* Resets current_y, based on the position of current, and puts the |
| * cursor at (current_y, current_x). */ |
| void reset_cursor(void) |
| { |
| const filestruct *ptr = edittop; |
| size_t x; |
| |
| /* Yuck. This condition can be true after open_file() when opening |
| * the first file. */ |
| if (edittop == NULL) |
| return; |
| |
| current_y = 0; |
| |
| while (ptr != current && ptr != editbot && ptr->next != NULL) { |
| ptr = ptr->next; |
| current_y++; |
| } |
| |
| x = xplustabs(); |
| wmove(edit, current_y, x - get_page_start(x)); |
| } |
| |
| /* edit_add() takes care of the job of actually painting a line into the |
| * edit window. fileptr is the line to be painted, at row yval of the |
| * window. converted is the actual string to be written to the window, |
| * with tabs and control characters replaced by strings of regular |
| * characters. start is the column number of the first character |
| * of this page. That is, the first character of converted corresponds to |
| * character number actual_x(fileptr->data, start) of the line. */ |
| void edit_add(const filestruct *fileptr, const char *converted, |
| int yval, size_t start) |
| { |
| #if defined(ENABLE_COLOR) || !defined(NANO_SMALL) |
| size_t startpos = actual_x(fileptr->data, start); |
| /* The position in fileptr->data of the leftmost character |
| * that displays at least partially on the window. */ |
| size_t endpos = actual_x(fileptr->data, start + COLS - 1) + 1; |
| /* The position in fileptr->data of the first character that is |
| * completely off the window to the right. |
| * |
| * Note that endpos might be beyond the null terminator of the |
| * string. */ |
| #endif |
| |
| assert(fileptr != NULL && converted != NULL); |
| assert(strlen(converted) <= COLS); |
| |
| /* Just paint the string in any case (we'll add color or reverse on |
| * just the text that needs it). */ |
| mvwaddstr(edit, yval, 0, converted); |
| |
| #ifdef ENABLE_COLOR |
| if (colorstrings != NULL && ISSET(COLOR_SYNTAX)) { |
| const colortype *tmpcolor = colorstrings; |
| |
| for (; tmpcolor != NULL; tmpcolor = tmpcolor->next) { |
| int x_start; |
| /* Starting column for mvwaddnstr. Zero-based. */ |
| int paintlen; |
| /* Number of chars to paint on this line. There are COLS |
| * characters on a whole line. */ |
| regmatch_t startmatch; /* match position for start_regexp */ |
| regmatch_t endmatch; /* match position for end_regexp */ |
| |
| if (tmpcolor->bright) |
| wattron(edit, A_BOLD); |
| wattron(edit, COLOR_PAIR(tmpcolor->pairnum)); |
| /* Two notes about regexec(). Return value 0 means there is |
| * a match. Also, rm_eo is the first non-matching character |
| * after the match. */ |
| |
| /* First case, tmpcolor is a single-line expression. */ |
| if (tmpcolor->end == NULL) { |
| size_t k = 0; |
| |
| /* We increment k by rm_eo, to move past the end of the |
| * last match. Even though two matches may overlap, we |
| * want to ignore them, so that we can highlight |
| * C-strings correctly. */ |
| while (k < endpos) { |
| /* Note the fifth parameter to regexec(). It says |
| * not to match the beginning-of-line character |
| * unless k is 0. If regexec() returns REG_NOMATCH, |
| * there are no more matches in the line. */ |
| if (regexec(&tmpcolor->start, &fileptr->data[k], 1, |
| &startmatch, k == 0 ? 0 : REG_NOTBOL) == REG_NOMATCH) |
| break; |
| /* Translate the match to the beginning of the line. */ |
| startmatch.rm_so += k; |
| startmatch.rm_eo += k; |
| if (startmatch.rm_so == startmatch.rm_eo) { |
| startmatch.rm_eo++; |
| statusbar(_("Refusing 0 length regex match")); |
| } else if (startmatch.rm_so < endpos && |
| startmatch.rm_eo > startpos) { |
| if (startmatch.rm_so <= startpos) |
| x_start = 0; |
| else |
| x_start = strnlenpt(fileptr->data, startmatch.rm_so) |
| - start; |
| paintlen = strnlenpt(fileptr->data, startmatch.rm_eo) |
| - start - x_start; |
| if (paintlen > COLS - x_start) |
| paintlen = COLS - x_start; |
| |
| assert(0 <= x_start && 0 < paintlen && |
| x_start + paintlen <= COLS); |
| mvwaddnstr(edit, yval, x_start, |
| converted + x_start, paintlen); |
| } |
| k = startmatch.rm_eo; |
| } |
| } else { |
| /* This is a multi-line regexp. There are two steps. |
| * First, we have to see if the beginning of the line is |
| * colored by a start on an earlier line, and an end on |
| * this line or later. |
| * |
| * We find the first line before fileptr matching the |
| * start. If every match on that line is followed by an |
| * end, then go to step two. Otherwise, find the next line |
| * after start_line matching the end. If that line is not |
| * before fileptr, then paint the beginning of this line. */ |
| |
| const filestruct *start_line = fileptr->prev; |
| /* the first line before fileptr matching start */ |
| regoff_t start_col; |
| /* where it starts in that line */ |
| const filestruct *end_line; |
| int searched_later_lines = 0; |
| /* Used in step 2. Have we looked for an end on |
| * lines after fileptr? */ |
| |
| while (start_line != NULL && |
| regexec(&tmpcolor->start, start_line->data, 1, |
| &startmatch, 0) == REG_NOMATCH) { |
| /* If there is an end on this line, there is no need |
| * to look for starts on earlier lines. */ |
| if (regexec(tmpcolor->end, start_line->data, 0, NULL, 0) |
| == 0) |
| goto step_two; |
| start_line = start_line->prev; |
| } |
| /* No start found, so skip to the next step. */ |
| if (start_line == NULL) |
| goto step_two; |
| /* Now start_line is the first line before fileptr |
| * containing a start match. Is there a start on this |
| * line not followed by an end on this line? */ |
| |
| start_col = 0; |
| while (1) { |
| start_col += startmatch.rm_so; |
| startmatch.rm_eo -= startmatch.rm_so; |
| if (regexec(tmpcolor->end, |
| start_line->data + start_col + startmatch.rm_eo, |
| 0, NULL, start_col + startmatch.rm_eo == 0 ? 0 : |
| REG_NOTBOL) == REG_NOMATCH) |
| /* No end found after this start. */ |
| break; |
| start_col++; |
| if (regexec(&tmpcolor->start, |
| start_line->data + start_col, 1, &startmatch, |
| REG_NOTBOL) == REG_NOMATCH) |
| /* No later start on this line. */ |
| goto step_two; |
| } |
| /* Indeed, there is a start not followed on this line by |
| * an end. */ |
| |
| /* We have already checked that there is no end before |
| * fileptr and after the start. Is there an end after |
| * the start at all? We don't paint unterminated |
| * starts. */ |
| end_line = fileptr; |
| while (end_line != NULL && |
| regexec(tmpcolor->end, end_line->data, 1, &endmatch, 0)) |
| end_line = end_line->next; |
| |
| /* No end found, or it is too early. */ |
| if (end_line == NULL || |
| (end_line == fileptr && endmatch.rm_eo <= startpos)) |
| goto step_two; |
| |
| /* Now paint the start of fileptr. */ |
| paintlen = end_line != fileptr ? COLS : |
| strnlenpt(fileptr->data, endmatch.rm_eo) - start; |
| if (paintlen > COLS) |
| paintlen = COLS; |
| |
| assert(0 < paintlen && paintlen <= COLS); |
| mvwaddnstr(edit, yval, 0, converted, paintlen); |
| |
| /* We have already painted the whole line. */ |
| if (paintlen == COLS) |
| goto skip_step_two; |
| |
| step_two: /* Second step, we look for starts on this line. */ |
| start_col = 0; |
| while (start_col < endpos) { |
| if (regexec(&tmpcolor->start, fileptr->data + start_col, 1, |
| &startmatch, start_col == 0 ? 0 : REG_NOTBOL) |
| == REG_NOMATCH || start_col + startmatch.rm_so >= |
| endpos) |
| /* No more starts on this line. */ |
| break; |
| /* Translate the match to be relative to the |
| * beginning of the line. */ |
| startmatch.rm_so += start_col; |
| startmatch.rm_eo += start_col; |
| |
| if (startmatch.rm_so <= startpos) |
| x_start = 0; |
| else |
| x_start = strnlenpt(fileptr->data, startmatch.rm_so) |
| - start; |
| if (regexec(tmpcolor->end, fileptr->data + startmatch.rm_eo, |
| 1, &endmatch, startmatch.rm_eo == 0 ? 0 : |
| REG_NOTBOL) == 0) { |
| /* Translate the end match to be relative to the |
| * beginning of the line. */ |
| endmatch.rm_so += startmatch.rm_eo; |
| endmatch.rm_eo += startmatch.rm_eo; |
| /* There is an end on this line. But does it |
| * appear on this page, and is the match more than |
| * zero characters long? */ |
| if (endmatch.rm_eo > startpos && |
| endmatch.rm_eo > startmatch.rm_so) { |
| paintlen = strnlenpt(fileptr->data, endmatch.rm_eo) |
| - start - x_start; |
| if (x_start + paintlen > COLS) |
| paintlen = COLS - x_start; |
| |
| assert(0 <= x_start && 0 < paintlen && |
| x_start + paintlen <= COLS); |
| mvwaddnstr(edit, yval, x_start, |
| converted + x_start, paintlen); |
| } |
| } else if (!searched_later_lines) { |
| searched_later_lines = 1; |
| /* There is no end on this line. But we haven't |
| * yet looked for one on later lines. */ |
| end_line = fileptr->next; |
| while (end_line != NULL && |
| regexec(tmpcolor->end, end_line->data, 0, |
| NULL, 0) == REG_NOMATCH) |
| end_line = end_line->next; |
| if (end_line != NULL) { |
| assert(0 <= x_start && x_start < COLS); |
| mvwaddnstr(edit, yval, x_start, |
| converted + x_start, |
| COLS - x_start); |
| /* We painted to the end of the line, so |
| * don't bother checking any more starts. */ |
| break; |
| } |
| } |
| start_col = startmatch.rm_so + 1; |
| } /* while start_col < endpos */ |
| } /* if (tmp_color->end != NULL) */ |
| |
| skip_step_two: |
| wattroff(edit, A_BOLD); |
| wattroff(edit, COLOR_PAIR(tmpcolor->pairnum)); |
| } /* for tmpcolor in colorstrings */ |
| } |
| #endif /* ENABLE_COLOR */ |
| |
| #ifndef NANO_SMALL |
| if (ISSET(MARK_ISSET) |
| && (fileptr->lineno <= mark_beginbuf->lineno |
| || fileptr->lineno <= current->lineno) |
| && (fileptr->lineno >= mark_beginbuf->lineno |
| || fileptr->lineno >= current->lineno)) { |
| /* fileptr is at least partially selected. */ |
| |
| const filestruct *top; |
| /* Either current or mark_beginbuf, whichever is first. */ |
| size_t top_x; |
| /* current_x or mark_beginx, corresponding to top. */ |
| const filestruct *bot; |
| size_t bot_x; |
| int x_start; |
| /* Starting column for mvwaddnstr. Zero-based. */ |
| int paintlen; |
| /* Number of chars to paint on this line. There are COLS |
| * characters on a whole line. */ |
| |
| mark_order(&top, &top_x, &bot, &bot_x); |
| |
| if (top->lineno < fileptr->lineno || top_x < startpos) |
| top_x = startpos; |
| if (bot->lineno > fileptr->lineno || bot_x > endpos) |
| bot_x = endpos; |
| |
| /* The selected bit of fileptr is on this page. */ |
| if (top_x < endpos && bot_x > startpos) { |
| assert(startpos <= top_x); |
| |
| /* x_start is the expanded location of the beginning of the |
| * mark minus the beginning of the page. */ |
| x_start = strnlenpt(fileptr->data, top_x) - start; |
| |
| if (bot_x >= endpos) |
| /* If the end of the mark is off the page, paintlen is |
| * -1, meaning that everything on the line gets |
| * painted. */ |
| paintlen = -1; |
| else |
| /* Otherwise, paintlen is the expanded location of the |
| * end of the mark minus the expanded location of the |
| * beginning of the mark. */ |
| paintlen = strnlenpt(fileptr->data, bot_x) - (x_start + |
| start); |
| |
| /* If x_start is before the beginning of the page, shift |
| * paintlen x_start characters to compensate, and put |
| * x_start at the beginning of the page. */ |
| if (x_start < 0) { |
| paintlen += x_start; |
| x_start = 0; |
| } |
| |
| assert(x_start >= 0 && x_start <= strlen(converted)); |
| |
| wattron(edit, A_REVERSE); |
| mvwaddnstr(edit, yval, x_start, converted + x_start, paintlen); |
| wattroff(edit, A_REVERSE); |
| } |
| } |
| #endif /* !NANO_SMALL */ |
| } |
| |
| /* Just update one line in the edit buffer. Basically a wrapper for |
| * edit_add(). |
| * |
| * If fileptr != current, then index is considered 0. |
| * The line will be displayed starting with fileptr->data[index]. |
| * Likely args are current_x or 0. */ |
| void update_line(const filestruct *fileptr, size_t index) |
| { |
| int line; |
| /* line in the edit window for CURSES calls */ |
| char *converted; |
| /* fileptr->data converted to have tabs and control characters |
| * expanded. */ |
| size_t page_start; |
| |
| assert(fileptr != NULL); |
| |
| line = fileptr->lineno - edittop->lineno; |
| |
| /* We assume the line numbers are valid. Is that really true? */ |
| assert(line < 0 || line == check_linenumbers(fileptr)); |
| |
| if (line < 0 || line >= editwinrows) |
| return; |
| |
| /* First, blank out the line (at a minimum) */ |
| mvwaddstr(edit, line, 0, hblank); |
| |
| /* Next, convert variables that index the line to their equivalent |
| * positions in the expanded line. */ |
| index = (fileptr == current) ? strnlenpt(fileptr->data, index) : 0; |
| page_start = get_page_start(index); |
| |
| /* Expand the line, replacing Tab by spaces, and control characters |
| * by their display form. */ |
| converted = display_string(fileptr->data, page_start, COLS); |
| |
| /* Now, paint the line */ |
| edit_add(fileptr, converted, line, page_start); |
| free(converted); |
| |
| if (page_start > 0) |
| mvwaddch(edit, line, 0, '$'); |
| if (strlenpt(fileptr->data) > page_start + COLS) |
| mvwaddch(edit, line, COLS - 1, '$'); |
| } |
| |
| /* This function updates current, based on where current_y is; |
| * reset_cursor() does the opposite. */ |
| void update_cursor(void) |
| { |
| int i = 0; |
| |
| #ifdef DEBUG |
| fprintf(stderr, "Moved to (%d, %d) in edit buffer\n", current_y, |
| current_x); |
| #endif |
| |
| current = edittop; |
| while (i < current_y && current->next != NULL) { |
| current = current->next; |
| i++; |
| } |
| |
| #ifdef DEBUG |
| fprintf(stderr, "current->data = \"%s\"\n", current->data); |
| #endif |
| } |
| |
| void center_cursor(void) |
| { |
| current_y = editwinrows / 2; |
| wmove(edit, current_y, current_x); |
| } |
| |
| /* Refresh the screen without changing the position of lines. */ |
| void edit_refresh(void) |
| { |
| /* Neither of these conditions should occur, but they do. edittop |
| * is NULL when you open an existing file on the command line, and |
| * ENABLE_COLOR is defined. Yuck. */ |
| if (current == NULL) |
| return; |
| if (edittop == NULL) |
| edittop = current; |
| |
| if (current->lineno < edittop->lineno || |
| current->lineno >= edittop->lineno + editwinrows) |
| /* Note that edit_update() changes edittop so that |
| * current->lineno = edittop->lineno + editwinrows / 2. Thus |
| * when it then calls edit_refresh(), there is no danger of |
| * getting an infinite loop. */ |
| edit_update(current, CENTER); |
| else { |
| int nlines = 0; |
| |
| /* Don't make the cursor jump around the screen whilst |
| * updating. */ |
| leaveok(edit, TRUE); |
| |
| editbot = edittop; |
| while (nlines < editwinrows) { |
| update_line(editbot, current_x); |
| nlines++; |
| if (editbot->next == NULL) |
| break; |
| editbot = editbot->next; |
| } |
| while (nlines < editwinrows) { |
| mvwaddstr(edit, nlines, 0, hblank); |
| nlines++; |
| } |
| /* What the hell are we expecting to update the screen if this |
| * isn't here? Luck? */ |
| wrefresh(edit); |
| leaveok(edit, FALSE); |
| } |
| } |
| |
| /* Same as above, but touch the window first, so everything is |
| * redrawn. */ |
| void edit_refresh_clearok(void) |
| { |
| clearok(edit, TRUE); |
| edit_refresh(); |
| clearok(edit, FALSE); |
| } |
| |
| /* Nice generic routine to update the edit buffer, given a pointer to the |
| * file struct =) */ |
| void edit_update(filestruct *fileptr, topmidnone location) |
| { |
| if (fileptr == NULL) |
| return; |
| |
| if (location != TOP) { |
| int goal = location == NONE ? current_y : editwinrows / 2; |
| |
| for (; goal > 0 && fileptr->prev != NULL; goal--) |
| fileptr = fileptr->prev; |
| } |
| edittop = fileptr; |
| edit_refresh(); |
| } |
| |
| /* Ask a question on the statusbar. Answer will be stored in answer |
| * global. Returns -1 on aborted enter, -2 on a blank string, and 0 |
| * otherwise, the valid shortcut key caught. Def is any editable text we |
| * want to put up by default. |
| * |
| * New arg tabs tells whether or not to allow tab completion. */ |
| int statusq(int tabs, const shortcut *s, const char *def, |
| #ifndef NANO_SMALL |
| historyheadtype *which_history, |
| #endif |
| const char *msg, ...) |
| { |
| va_list ap; |
| char *foo = charalloc(COLS - 3); |
| int ret; |
| #ifndef DISABLE_TABCOMP |
| int list = 0; |
| #endif |
| |
| bottombars(s); |
| |
| va_start(ap, msg); |
| vsnprintf(foo, COLS - 4, msg, ap); |
| va_end(ap); |
| foo[COLS - 4] = '\0'; |
| |
| ret = nanogetstr(tabs, foo, def, |
| #ifndef NANO_SMALL |
| which_history, |
| #endif |
| s |
| #ifndef DISABLE_TABCOMP |
| , &list |
| #endif |
| ); |
| free(foo); |
| resetstatuspos = 0; |
| |
| switch (ret) { |
| case NANO_FIRSTLINE_KEY: |
| do_first_line(); |
| resetstatuspos = 1; |
| break; |
| case NANO_LASTLINE_KEY: |
| do_last_line(); |
| resetstatuspos = 1; |
| break; |
| #ifndef DISABLE_JUSTIFY |
| case NANO_PARABEGIN_KEY: |
| do_para_begin(); |
| resetstatuspos = 1; |
| break; |
| case NANO_PARAEND_KEY: |
| do_para_end(); |
| resetstatuspos = 1; |
| break; |
| #endif |
| case NANO_CANCEL_KEY: |
| ret = -1; |
| resetstatuspos = 1; |
| break; |
| } |
| blank_statusbar(); |
| |
| #ifdef DEBUG |
| fprintf(stderr, "I got \"%s\"\n", answer); |
| #endif |
| |
| #ifndef DISABLE_TABCOMP |
| /* if we've done tab completion, there might be a list of |
| filename matches on the edit window at this point; make sure |
| they're cleared off. */ |
| if (list) |
| edit_refresh(); |
| #endif |
| |
| return ret; |
| } |
| |
| /* Ask a simple yes/no question on the statusbar. Returns 1 for Y, 0 |
| * for N, 2 for All (if all is nonzero when passed in) and -1 for abort |
| * (^C). */ |
| int do_yesno(int all, int leavecursor, const char *msg, ...) |
| { |
| va_list ap; |
| char *foo; |
| int ok = -2; |
| const char *yesstr; /* String of yes characters accepted */ |
| const char *nostr; /* Same for no */ |
| const char *allstr; /* And all, surprise! */ |
| |
| /* Yes, no and all are strings of any length. Each string consists |
| * of all characters accepted as a valid character for that value. |
| * The first value will be the one displayed in the shortcuts. */ |
| yesstr = _("Yy"); |
| nostr = _("Nn"); |
| allstr = _("Aa"); |
| |
| /* Remove gettext call for keybindings until we clear the thing |
| * up. */ |
| if (!ISSET(NO_HELP)) { |
| char shortstr[3]; /* Temp string for Y, N, A. */ |
| |
| /* Write the bottom of the screen. */ |
| blank_bottombars(); |
| |
| sprintf(shortstr, " %c", yesstr[0]); |
| wmove(bottomwin, 1, 0); |
| onekey(shortstr, _("Yes"), 16); |
| |
| if (all) { |
| wmove(bottomwin, 1, 16); |
| shortstr[1] = allstr[0]; |
| onekey(shortstr, _("All"), 16); |
| } |
| |
| wmove(bottomwin, 2, 0); |
| shortstr[1] = nostr[0]; |
| onekey(shortstr, _("No"), 16); |
| |
| wmove(bottomwin, 2, 16); |
| onekey("^C", _("Cancel"), 16); |
| } |
| |
| foo = charalloc(COLS); |
| va_start(ap, msg); |
| vsnprintf(foo, COLS, msg, ap); |
| va_end(ap); |
| foo[COLS - 1] = '\0'; |
| |
| wattron(bottomwin, A_REVERSE); |
| |
| blank_statusbar(); |
| mvwaddstr(bottomwin, 0, 0, foo); |
| free(foo); |
| |
| wattroff(bottomwin, A_REVERSE); |
| |
| wrefresh(bottomwin); |
| |
| do { |
| int kbinput = wgetch(edit); |
| #ifndef DISABLE_MOUSE |
| MEVENT mevent; |
| #endif |
| |
| if (kbinput == NANO_CONTROL_C) |
| ok = -1; |
| #ifndef DISABLE_MOUSE |
| /* Look ma! We get to duplicate lots of code from do_mouse!! */ |
| else if (kbinput == KEY_MOUSE && getmouse(&mevent) != ERR && |
| wenclose(bottomwin, mevent.y, mevent.x) && |
| !ISSET(NO_HELP) && mevent.x < 32 && |
| mevent.y >= editwinrows + 3) { |
| int x = mevent.x /= 16; |
| /* Did we click in the first column of shortcuts, or the |
| * second? */ |
| int y = mevent.y - editwinrows - 3; |
| /* Did we click in the first row of shortcuts? */ |
| |
| assert(0 <= x && x <= 1 && 0 <= y && y <= 1); |
| /* x = 0 means they clicked Yes or No. |
| * y = 0 means Yes or All. */ |
| ok = -2 * x * y + x - y + 1; |
| |
| if (ok == 2 && !all) |
| ok = -2; |
| } |
| #endif |
| /* Look for the kbinput in the yes, no and (optionally) all |
| * str. */ |
| else if (strchr(yesstr, kbinput) != NULL) |
| ok = 1; |
| else if (strchr(nostr, kbinput) != NULL) |
| ok = 0; |
| else if (all && strchr(allstr, kbinput) != NULL) |
| ok = 2; |
| } while (ok == -2); |
| |
| /* Then blank the statusbar. */ |
| blank_statusbar_refresh(); |
| |
| return ok; |
| } |
| |
| int total_refresh(void) |
| { |
| clearok(edit, TRUE); |
| clearok(topwin, TRUE); |
| clearok(bottomwin, TRUE); |
| wnoutrefresh(edit); |
| wnoutrefresh(topwin); |
| wnoutrefresh(bottomwin); |
| doupdate(); |
| clearok(edit, FALSE); |
| clearok(topwin, FALSE); |
| clearok(bottomwin, FALSE); |
| edit_refresh(); |
| titlebar(NULL); |
| return 1; |
| } |
| |
| void display_main_list(void) |
| { |
| bottombars(main_list); |
| } |
| |
| void statusbar(const char *msg, ...) |
| { |
| va_list ap; |
| |
| va_start(ap, msg); |
| |
| /* Curses mode is turned off. If we use wmove() now, it will muck |
| * up the terminal settings. So we just use vfprintf(). */ |
| if (curses_ended) { |
| vfprintf(stderr, msg, ap); |
| va_end(ap); |
| return; |
| } |
| |
| /* Blank out the line. */ |
| blank_statusbar(); |
| |
| if (COLS >= 4) { |
| char *bar; |
| char *foo; |
| int start_x = 0; |
| size_t foo_len; |
| bar = charalloc(COLS - 3); |
| vsnprintf(bar, COLS - 3, msg, ap); |
| va_end(ap); |
| foo = display_string(bar, 0, COLS - 4); |
| free(bar); |
| foo_len = strlen(foo); |
| start_x = (COLS - foo_len - 4) / 2; |
| |
| wmove(bottomwin, 0, start_x); |
| wattron(bottomwin, A_REVERSE); |
| |
| waddstr(bottomwin, "[ "); |
| waddstr(bottomwin, foo); |
| free(foo); |
| waddstr(bottomwin, " ]"); |
| wattroff(bottomwin, A_REVERSE); |
| wnoutrefresh(bottomwin); |
| wrefresh(edit); |
| /* Leave the cursor at its position in the edit window, not |
| * in the statusbar. */ |
| } |
| |
| SET(DISABLE_CURPOS); |
| statblank = 26; |
| } |
| |
| /* If constant is false, the user typed ^C so we unconditionally display |
| * the cursor position. Otherwise, we display it only if the character |
| * position changed, and DISABLE_CURPOS is not set. |
| * |
| * If constant and DISABLE_CURPOS is set, we unset it and update old_i and |
| * old_totsize. That way, we leave the current statusbar alone, but next |
| * time we will display. */ |
| int do_cursorpos(int constant) |
| { |
| const filestruct *fileptr; |
| unsigned long i = 0; |
| static unsigned long old_i = 0; |
| static long old_totsize = -1; |
| |
| assert(current != NULL && fileage != NULL && totlines != 0); |
| |
| if (old_totsize == -1) |
| old_totsize = totsize; |
| |
| for (fileptr = fileage; fileptr != current; fileptr = fileptr->next) { |
| assert(fileptr != NULL); |
| i += strlen(fileptr->data) + 1; |
| } |
| i += current_x; |
| |
| if (constant && ISSET(DISABLE_CURPOS)) { |
| UNSET(DISABLE_CURPOS); |
| old_i = i; |
| old_totsize = totsize; |
| return 0; |
| } |
| |
| /* If constant is false, display the position on the statusbar |
| * unconditionally; otherwise, only display the position when the |
| * character values have changed. */ |
| if (!constant || old_i != i || old_totsize != totsize) { |
| unsigned long xpt = xplustabs() + 1; |
| unsigned long cur_len = strlenpt(current->data) + 1; |
| int linepct = 100 * current->lineno / totlines; |
| int colpct = 100 * xpt / cur_len; |
| int bytepct = totsize == 0 ? 0 : 100 * i / totsize; |
| |
| statusbar( |
| _("line %ld/%ld (%d%%), col %lu/%lu (%d%%), char %lu/%ld (%d%%)"), |
| current->lineno, totlines, linepct, |
| xpt, cur_len, colpct, |
| i, totsize, bytepct); |
| UNSET(DISABLE_CURPOS); |
| } |
| |
| old_i = i; |
| old_totsize = totsize; |
| |
| reset_cursor(); |
| return 0; |
| } |
| |
| int do_cursorpos_void(void) |
| { |
| return do_cursorpos(0); |
| } |
| |
| /* Calculate the next line of help_text, starting at ptr. */ |
| int line_len(const char *ptr) |
| { |
| int j = 0; |
| |
| while (*ptr != '\n' && *ptr != '\0' && j < COLS - 5) { |
| ptr++; |
| j++; |
| } |
| if (j == COLS - 5) { |
| /* Don't wrap at the first of two spaces following a period. */ |
| if (*ptr == ' ' && *(ptr + 1) == ' ') |
| j++; |
| /* Don't print half a word if we've run out of space. */ |
| while (*ptr != ' ' && j > 0) { |
| ptr--; |
| j--; |
| } |
| /* Word longer than COLS - 5 chars just gets broken. */ |
| if (j == 0) |
| j = COLS - 5; |
| } |
| assert(j >= 0 && j <= COLS - 4 && (j > 0 || *ptr == '\n')); |
| return j; |
| } |
| |
| /* Our shortcut-list-compliant help function, which is better than |
| * nothing, and dynamic! */ |
| int do_help(void) |
| { |
| #ifndef DISABLE_HELP |
| int i, page = 0, kbinput = -1, meta, no_more = 0; |
| int no_help_flag = 0; |
| const shortcut *oldshortcut; |
| |
| blank_edit(); |
| curs_set(0); |
| wattroff(bottomwin, A_REVERSE); |
| blank_statusbar(); |
| |
| /* Set help_text as the string to display. */ |
| help_init(); |
| assert(help_text != NULL); |
| |
| oldshortcut = currshortcut; |
| |
| currshortcut = help_list; |
| |
| if (ISSET(NO_HELP)) { |
| |
| /* Well, if we're going to do this, we should at least do it the |
| * right way. */ |
| no_help_flag = 1; |
| UNSET(NO_HELP); |
| window_init(); |
| bottombars(help_list); |
| |
| } else |
| bottombars(help_list); |
| |
| do { |
| const char *ptr = help_text; |
| |
| switch (kbinput) { |
| #ifndef DISABLE_MOUSE |
| case KEY_MOUSE: |
| do_mouse(); |
| break; |
| #endif |
| case NANO_NEXTPAGE_KEY: |
| case NANO_NEXTPAGE_FKEY: |
| if (!no_more) { |
| blank_edit(); |
| page++; |
| } |
| break; |
| case NANO_PREVPAGE_KEY: |
| case NANO_PREVPAGE_FKEY: |
| if (page > 0) { |
| no_more = 0; |
| blank_edit(); |
| page--; |
| } |
| break; |
| } |
| |
| /* Calculate where in the text we should be, based on the |
| * page. */ |
| for (i = 1; i < page * (editwinrows - 1); i++) { |
| ptr += line_len(ptr); |
| if (*ptr == '\n') |
| ptr++; |
| } |
| |
| for (i = 0; i < editwinrows && *ptr != '\0'; i++) { |
| int j = line_len(ptr); |
| |
| mvwaddnstr(edit, i, 0, ptr, j); |
| ptr += j; |
| if (*ptr == '\n') |
| ptr++; |
| } |
| |
| if (*ptr == '\0') { |
| no_more = 1; |
| continue; |
| } |
| } while ((kbinput = get_kbinput(edit, &meta, ISSET(REBIND_DELETE))) != NANO_EXIT_KEY && kbinput != NANO_EXIT_FKEY); |
| |
| currshortcut = oldshortcut; |
| |
| if (no_help_flag) { |
| blank_bottombars(); |
| wrefresh(bottomwin); |
| SET(NO_HELP); |
| window_init(); |
| } else |
| bottombars(currshortcut); |
| |
| curs_set(1); |
| edit_refresh(); |
| |
| /* The help_init() at the beginning allocated help_text, which has |
| * now been written to the screen. */ |
| free(help_text); |
| help_text = NULL; |
| |
| #elif defined(DISABLE_HELP) |
| nano_disabled_msg(); |
| #endif |
| |
| return 1; |
| } |
| |
| /* Highlight the current word being replaced or spell checked. We |
| * expect word to have tabs and control characters expanded. */ |
| void do_replace_highlight(int highlight_flag, const char *word) |
| { |
| int y = xplustabs(); |
| size_t word_len = strlen(word); |
| |
| y = get_page_start(y) + COLS - y; |
| /* Now y is the number of characters we can display on this |
| * line. */ |
| |
| reset_cursor(); |
| |
| if (highlight_flag) |
| wattron(edit, A_REVERSE); |
| |
| waddnstr(edit, word, y - 1); |
| |
| if (word_len > y) |
| waddch(edit, '$'); |
| else if (word_len == y) |
| waddch(edit, word[word_len - 1]); |
| |
| if (highlight_flag) |
| wattroff(edit, A_REVERSE); |
| } |
| |
| /* Fix editbot, based on the assumption that edittop is correct. */ |
| void fix_editbot(void) |
| { |
| int i; |
| |
| editbot = edittop; |
| for (i = 0; i < editwinrows && editbot->next != NULL; i++) |
| editbot = editbot->next; |
| } |
| |
| #ifdef DEBUG |
| /* Dump the passed-in file structure to stderr. */ |
| void dump_buffer(const filestruct *inptr) |
| { |
| if (inptr == fileage) |
| fprintf(stderr, "Dumping file buffer to stderr...\n"); |
| else if (inptr == cutbuffer) |
| fprintf(stderr, "Dumping cutbuffer to stderr...\n"); |
| else |
| fprintf(stderr, "Dumping a buffer to stderr...\n"); |
| |
| while (inptr != NULL) { |
| fprintf(stderr, "(%d) %s\n", inptr->lineno, inptr->data); |
| inptr = inptr->next; |
| } |
| } |
| |
| /* Dump the file structure to stderr in reverse. */ |
| void dump_buffer_reverse(void) |
| { |
| const filestruct *fileptr = filebot; |
| |
| while (fileptr != NULL) { |
| fprintf(stderr, "(%d) %s\n", fileptr->lineno, fileptr->data); |
| fileptr = fileptr->prev; |
| } |
| } |
| #endif /* DEBUG */ |
| |
| #ifdef NANO_EXTRA |
| #define CREDIT_LEN 53 |
| #define XLCREDIT_LEN 8 |
| |
| void do_credits(void) |
| { |
| int i, j = 0, k, place = 0, start_x; |
| |
| const char *what; |
| const char *xlcredits[XLCREDIT_LEN]; |
| |
| const char *credits[CREDIT_LEN] = { |
| "0", /* "The nano text editor" */ |
| "1", /* "version" */ |
| VERSION, |
| "", |
| "2", /* "Brought to you by:" */ |
| "Chris Allegretta", |
| "Jordi Mallach", |
| "Adam Rogoyski", |
| "Rob Siemborski", |
| "Rocco Corsi", |
| "David Lawrence Ramsey", |
| "David Benbennick", |
| "Ken Tyler", |
| "Sven Guckes", |
| "Florian König", |
| "Pauli Virtanen", |
| "Daniele Medri", |
| "Clement Laforet", |
| "Tedi Heriyanto", |
| "Bill Soudan", |
| "Christian Weisgerber", |
| "Erik Andersen", |
| "Big Gaute", |
| "Joshua Jensen", |
| "Ryan Krebs", |
| "Albert Chin", |
| "", |
| "3", /* "Special thanks to:" */ |
| "Plattsburgh State University", |
| "Benet Laboratories", |
| "Amy Allegretta", |
| "Linda Young", |
| "Jeremy Robichaud", |
| "Richard Kolb II", |
| "4", /* "The Free Software Foundation" */ |
| "Linus Torvalds", |
| "5", /* "For ncurses:" */ |
| "Thomas Dickey", |
| "Pavel Curtis", |
| "Zeyd Ben-Halim", |
| "Eric S. Raymond", |
| "6", /* "and anyone else we forgot..." */ |
| "7", /* "Thank you for using nano!\n" */ |
| "", "", "", "", |
| "(c) 1999-2003 Chris Allegretta", |
| "", "", "", "", |
| "http://www.nano-editor.org/" |
| }; |
| |
| xlcredits[0] = _("The nano text editor"); |
| xlcredits[1] = _("version "); |
| xlcredits[2] = _("Brought to you by:"); |
| xlcredits[3] = _("Special thanks to:"); |
| xlcredits[4] = _("The Free Software Foundation"); |
| xlcredits[5] = _("For ncurses:"); |
| xlcredits[6] = _("and anyone else we forgot..."); |
| xlcredits[7] = _("Thank you for using nano!\n"); |
| |
| curs_set(0); |
| nodelay(edit, TRUE); |
| blank_bottombars(); |
| mvwaddstr(topwin, 0, 0, hblank); |
| blank_edit(); |
| wrefresh(edit); |
| wrefresh(bottomwin); |
| wrefresh(topwin); |
| |
| while (wgetch(edit) == ERR) { |
| for (k = 0; k <= 1; k++) { |
| blank_edit(); |
| for (i = editwinrows / 2 - 1; i >= (editwinrows / 2 - 1 - j); |
| i--) { |
| mvwaddstr(edit, i * 2 - k, 0, hblank); |
| |
| if (place - (editwinrows / 2 - 1 - i) < CREDIT_LEN) { |
| what = credits[place - (editwinrows / 2 - 1 - i)]; |
| |
| /* God I've missed hacking. If what is exactly |
| 1 char long, it's a sentinel for a translated |
| string, so use that instead. This means no |
| thanking people with 1 character long names ;-) */ |
| if (strlen(what) == 1) |
| what = xlcredits[atoi(what)]; |
| } else |
| what = ""; |
| |
| start_x = COLS / 2 - strlen(what) / 2 - 1; |
| mvwaddstr(edit, i * 2 - k, start_x, what); |
| } |
| usleep(700000); |
| wrefresh(edit); |
| } |
| if (j < editwinrows / 2 - 1) |
| j++; |
| |
| place++; |
| |
| if (place >= CREDIT_LEN + editwinrows / 2) |
| break; |
| } |
| |
| nodelay(edit, FALSE); |
| curs_set(1); |
| display_main_list(); |
| total_refresh(); |
| } |
| #endif |