示例#1
0
/**
 * Insert 'ch' at position 'pos'
 *
 * Returns 1 if the line needs to be refreshed, 2 if not
 * and 0 if nothing was inserted (no room)
 */
static int insert_char(struct current *current, int pos, int ch)
{
    char buf[3];
    int n = utf8_getchars(buf, ch);

    if (has_room(current, n) && pos >= 0 && pos <= current->chars) {
        int p1, p2;
        int ret = 1;
        p1 = utf8_index(current->buf, pos);
        p2 = p1 + n;

#ifdef USE_TERMIOS
        /* optimise the case where adding a single char to the end and no scrolling is needed */
        if (current->pos == pos && current->chars == pos) {
            if (ch >= ' ' && utf8_strlen(current->prompt, -1) + utf8_strlen(current->buf, current->len) < current->cols - 1) {
                IGNORE_RC(write(current->fd, buf, n));
                ret = 2;
            }
        }
#endif

        memmove(current->buf + p2, current->buf + p1, current->len - p1);
        memcpy(current->buf + p1, buf, n);
        current->len += n;

        current->chars++;
        if (current->pos >= pos) {
            current->pos++;
        }
        return ret;
    }
    return 0;
}
示例#2
0
文件: fjoin.cpp 项目: Adam-/inspircd
void FwdFJoinBuilder::add(Membership* memb, std::string::const_iterator mbegin, std::string::const_iterator mend)
{
	// Pseudoserver compatibility:
	// Some pseudoservers do not handle lines longer than 512 so we split long FJOINs into multiple messages.
	// The forwarded FJOIN can end up being longer than the original one if we have more modes set and won, for example.

	// Check if the member fits into the current message. If not, send it and prepare a new one.
	if (!has_room(std::distance(mbegin, mend)))
	{
		finalize();
		Forward(sourceserver);
		clear();
	}
	// Add the member and their modes exactly as they sent them
	CommandFJoin::Builder::add(memb, mbegin, mend);
}
示例#3
0
static int linenoiseEdit(struct current *current) {
    int history_index = 0;

    /* The latest history entry is always our current buffer, that
     * initially is just an empty string. */
    linenoiseHistoryAdd("");

    set_current(current, "");
    refreshLine(current->prompt, current);

    while(1) {
        int dir = -1;
        int c = fd_read(current);

#ifndef NO_COMPLETION
        /* Only autocomplete when the callback is set. It returns < 0 when
         * there was an error reading from fd. Otherwise it will return the
         * character that should be handled next. */
        if (c == '\t' && current->pos == current->chars && completionCallback != NULL) {
            c = completeLine(current);
            /* Return on errors */
            if (c < 0) return current->len;
            /* Read next character when 0 */
            if (c == 0) continue;
        }
#endif

process_char:
        if (c == -1) return current->len;
#ifdef USE_TERMIOS
        if (c == 27) {   /* escape sequence */
            c = check_special(current->fd);
        }
#endif
        switch(c) {
        case '\r':    /* enter */
            history_len--;
            free(history[history_len]);
            return current->len;
        case ctrl('C'):     /* ctrl-c */
            errno = EAGAIN;
            return -1;
        case 127:   /* backspace */
        case ctrl('H'):
            if (remove_char(current, current->pos - 1) == 1) {
                refreshLine(current->prompt, current);
            }
            break;
        case ctrl('D'):     /* ctrl-d */
            if (current->len == 0) {
                /* Empty line, so EOF */
                history_len--;
                free(history[history_len]);
                return -1;
            }
            /* Otherwise fall through to delete char to right of cursor */
        case SPECIAL_DELETE:
            if (remove_char(current, current->pos) == 1) {
                refreshLine(current->prompt, current);
            }
            break;
        case SPECIAL_INSERT:
            /* Ignore. Expansion Hook.
             * Future possibility: Toggle Insert/Overwrite Modes
             */
            break;
        case ctrl('W'):    /* ctrl-w, delete word at left. save deleted chars */
            /* eat any spaces on the left */
            {
                int pos = current->pos;
                while (pos > 0 && get_char(current, pos - 1) == ' ') {
                    pos--;
                }

                /* now eat any non-spaces on the left */
                while (pos > 0 && get_char(current, pos - 1) != ' ') {
                    pos--;
                }

                if (remove_chars(current, pos, current->pos - pos)) {
                    refreshLine(current->prompt, current);
                }
            }
            break;
        case ctrl('R'):    /* ctrl-r */
            {
                /* Display the reverse-i-search prompt and process chars */
                char rbuf[50];
                char rprompt[80];
                int rchars = 0;
                int rlen = 0;
                int searchpos = history_len - 1;

                rbuf[0] = 0;
                while (1) {
                    int n = 0;
                    const char *p = NULL;
                    int skipsame = 0;
                    int searchdir = -1;

                    snprintf(rprompt, sizeof(rprompt), "(reverse-i-search)'%s': ", rbuf);
                    refreshLine(rprompt, current);
                    c = fd_read(current);
                    if (c == ctrl('H') || c == 127) {
                        if (rchars) {
                            int p = utf8_index(rbuf, --rchars);
                            rbuf[p] = 0;
                            rlen = strlen(rbuf);
                        }
                        continue;
                    }
#ifdef USE_TERMIOS
                    if (c == 27) {
                        c = check_special(current->fd);
                    }
#endif
                    if (c == ctrl('P') || c == SPECIAL_UP) {
                        /* Search for the previous (earlier) match */
                        if (searchpos > 0) {
                            searchpos--;
                        }
                        skipsame = 1;
                    }
                    else if (c == ctrl('N') || c == SPECIAL_DOWN) {
                        /* Search for the next (later) match */
                        if (searchpos < history_len) {
                            searchpos++;
                        }
                        searchdir = 1;
                        skipsame = 1;
                    }
                    else if (c >= ' ') {
                        if (rlen >= (int)sizeof(rbuf) + 3) {
                            continue;
                        }

                        n = utf8_getchars(rbuf + rlen, c);
                        rlen += n;
                        rchars++;
                        rbuf[rlen] = 0;

                        /* Adding a new char resets the search location */
                        searchpos = history_len - 1;
                    }
                    else {
                        /* Exit from incremental search mode */
                        break;
                    }

                    /* Now search through the history for a match */
                    for (; searchpos >= 0 && searchpos < history_len; searchpos += searchdir) {
                        p = strstr(history[searchpos], rbuf);
                        if (p) {
                            /* Found a match */
                            if (skipsame && strcmp(history[searchpos], current->buf) == 0) {
                                /* But it is identical, so skip it */
                                continue;
                            }
                            /* Copy the matching line and set the cursor position */
                            set_current(current,history[searchpos]);
                            current->pos = utf8_strlen(history[searchpos], p - history[searchpos]);
                            break;
                        }
                    }
                    if (!p && n) {
                        /* No match, so don't add it */
                        rchars--;
                        rlen -= n;
                        rbuf[rlen] = 0;
                    }
                }
                if (c == ctrl('G') || c == ctrl('C')) {
                    /* ctrl-g terminates the search with no effect */
                    set_current(current, "");
                    c = 0;
                }
                else if (c == ctrl('J')) {
                    /* ctrl-j terminates the search leaving the buffer in place */
                    c = 0;
                }
                /* Go process the char normally */
                refreshLine(current->prompt, current);
                goto process_char;
            }
            break;
        case ctrl('T'):    /* ctrl-t */
            if (current->pos > 0 && current->pos <= current->chars) {
                /* If cursor is at end, transpose the previous two chars */
                int fixer = (current->pos == current->chars);
                c = get_char(current, current->pos - fixer);
                remove_char(current, current->pos - fixer);
                insert_char(current, current->pos - 1, c);
                refreshLine(current->prompt, current);
            }
            break;
        case ctrl('V'):    /* ctrl-v */
            if (has_room(current, 3)) {
                /* Insert the ^V first */
                if (insert_char(current, current->pos, c)) {
                    refreshLine(current->prompt, current);
                    /* Now wait for the next char. Can insert anything except \0 */
                    c = fd_read(current);

                    /* Remove the ^V first */
                    remove_char(current, current->pos - 1);
                    if (c != -1) {
                        /* Insert the actual char */
                        insert_char(current, current->pos, c);
                    }
                    refreshLine(current->prompt, current);
                }
            }
            break;
        case ctrl('B'):
        case SPECIAL_LEFT:
            if (current->pos > 0) {
                current->pos--;
                refreshLine(current->prompt, current);
            }
            break;
        case ctrl('F'):
        case SPECIAL_RIGHT:
            if (current->pos < current->chars) {
                current->pos++;
                refreshLine(current->prompt, current);
            }
            break;
        case SPECIAL_PAGE_UP:
          dir = history_len - history_index - 1; /* move to start of history */
          goto history_navigation;
        case SPECIAL_PAGE_DOWN:
          dir = -history_index; /* move to 0 == end of history, i.e. current */
          goto history_navigation;
        case ctrl('P'):
        case SPECIAL_UP:
            dir = 1;
          goto history_navigation;
        case ctrl('N'):
        case SPECIAL_DOWN:
history_navigation:
            if (history_len > 1) {
                /* Update the current history entry before to
                 * overwrite it with tne next one. */
                free(history[history_len - 1 - history_index]);
                history[history_len - 1 - history_index] = strdup(current->buf);
                /* Show the new entry */
                history_index += dir;
                if (history_index < 0) {
                    history_index = 0;
                    break;
                } else if (history_index >= history_len) {
                    history_index = history_len - 1;
                    break;
                }
                set_current(current, history[history_len - 1 - history_index]);
                refreshLine(current->prompt, current);
            }
            break;
        case ctrl('A'): /* Ctrl+a, go to the start of the line */
        case SPECIAL_HOME:
            current->pos = 0;
            refreshLine(current->prompt, current);
            break;
        case ctrl('E'): /* ctrl+e, go to the end of the line */
        case SPECIAL_END:
            current->pos = current->chars;
            refreshLine(current->prompt, current);
            break;
        case ctrl('U'): /* Ctrl+u, delete to beginning of line, save deleted chars. */
            if (remove_chars(current, 0, current->pos)) {
                refreshLine(current->prompt, current);
            }
            break;
        case ctrl('K'): /* Ctrl+k, delete from current to end of line, save deleted chars. */
            if (remove_chars(current, current->pos, current->chars - current->pos)) {
                refreshLine(current->prompt, current);
            }
            break;
        case ctrl('Y'): /* Ctrl+y, insert saved chars at current position */
            if (current->capture && insert_chars(current, current->pos, current->capture)) {
                refreshLine(current->prompt, current);
            }
            break;
        case ctrl('L'): /* Ctrl+L, clear screen */
            linenoiseClearScreen();
            /* Force recalc of window size for serial terminals */
            current->cols = 0;
            refreshLine(current->prompt, current);
            break;
        default:
            /* Only tab is allowed without ^V */
            if (c == '\t' || c >= ' ') {
                if (insert_char(current, current->pos, c) == 1) {
                    refreshLine(current->prompt, current);
                }
            }
            break;
        }
    }
    return current->len;
}
示例#4
0
文件: info.cpp 项目: N4tr0n/wesnoth
void lobby_info::open_room(const std::string& name)
{
	if(!has_room(name)) {
		rooms_.push_back(room_info(name));
	}
}