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/* SPDX-License-Identifier: GPL-3.0-or-later */
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/*
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* screen
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* - advanced telnet-based user interactive input / output features
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*
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* Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com>
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*/
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#include "bbs.h"
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#include "common.h"
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#include "editor.h"
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#include "file_loader.h"
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#include "io.h"
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#include "log.h"
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#include "login.h"
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#include "screen.h"
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#include "str_process.h"
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <wchar.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/shm.h>
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#include <sys/types.h>
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const char CTRL_SEQ_CLR_LINE[] = "\033[K";
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static const int ACTIVE_BOARD_HEIGHT = 8;
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static const int STR_TOP_LEFT_MAX_LEN = 80;
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static const int STR_TOP_MIDDLE_MAX_LEN = 40;
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static const int STR_TOP_RIGHT_MAX_LEN = 80;
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static size_t get_time_str(char *s, size_t len)
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{
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time_t curtime;
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struct tm local_tm;
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time(&curtime);
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localtime_r(&curtime, &local_tm);
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size_t j = strftime(s, len, "%m/%d %H:%M %Z", &local_tm);
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return j;
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}
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void moveto(int row, int col)
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{
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if (row >= 0)
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{
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prints("\033[%d;%dH", row, col);
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}
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else
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{
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prints("\r");
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}
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}
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void clrtoeol()
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{
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prints(CTRL_SEQ_CLR_LINE);
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}
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void clrline(int line_begin, int line_end)
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{
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int i;
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for (i = line_begin; i <= line_end; i++)
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{
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moveto(i, 0);
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prints(CTRL_SEQ_CLR_LINE);
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}
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}
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void clrtobot(int line_begin)
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{
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moveto(line_begin, 0);
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prints("\033[J");
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moveto(line_begin, 0);
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}
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void clearscr()
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{
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prints("\033[2J");
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moveto(0, 0);
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}
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inline int press_any_key()
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{
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return press_any_key_ex(" \033[1;33m按任意键继续...\033[m", 60);
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}
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int press_any_key_ex(const char *msg, int sec)
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{
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int ch = 0;
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int duration = 0;
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time_t t_begin = time(NULL);
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moveto(SCREEN_ROWS, 0);
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clrtoeol();
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prints(msg);
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iflush();
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igetch_reset();
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do
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{
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ch = igetch_t(sec - duration);
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duration = (int)(time(NULL) - t_begin);
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} while (!SYS_server_exit && ch == 0 && duration < 60);
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return ch;
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}
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void set_input_echo(int echo)
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{
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if (echo)
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{
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outc('\x83'); // ASCII code 131
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}
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else
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{
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// outc ('\x85'); // ASCII code 133
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prints("\xff\xfb\x01\xff\xfb\x03");
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}
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iflush();
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}
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static int _str_input(char *buffer, int buf_size, int max_display_len, enum io_echo_t echo_mode)
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{
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int ch;
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int offset = 0;
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int eol;
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int display_len;
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char input_str[5];
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int str_len = 0;
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wchar_t wcs[2];
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char c;
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buffer[buf_size - 1] = '\0';
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offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
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igetch_reset();
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while (!SYS_server_exit)
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{
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ch = igetch_t(MIN(BBS_max_user_idle_time, 60));
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if (ch == CR)
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{
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break;
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}
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else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
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{
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return -1;
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}
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else if (ch == LF || ch == '\0')
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{
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continue;
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}
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else if (ch == BACKSPACE)
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{
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if (offset > 0)
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{
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offset--;
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if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
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{
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while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
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{
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offset--;
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}
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display_len--;
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prints("\033[D \033[D");
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}
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buffer[offset] = '\0';
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display_len--;
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prints("\033[D \033[D");
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iflush();
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}
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continue;
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}
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else if (ch > 255 || iscntrl(ch))
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{
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continue;
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}
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else if ((ch & 0xff80) == 0x80) // head of multi-byte character
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{
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str_len = 0;
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c = (char)(ch & 0xf0);
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while (c & 0x80)
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{
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input_str[str_len] = (char)(ch - 256);
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str_len++;
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c = (c & 0x7f) << 1;
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if ((c & 0x80) == 0) // Input completed
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{
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break;
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}
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// Expect additional bytes of input
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ch = igetch(100); // 0.1 second
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if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
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{
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#ifdef _DEBUG
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log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
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#endif
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str_len = 0;
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break;
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}
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}
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input_str[str_len] = '\0';
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if (str_len == 0) // Incomplete input
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{
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continue;
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}
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if (mbstowcs(wcs, input_str, 1) == (size_t)-1)
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{
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log_error("mbstowcs() error\n");
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}
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if (offset + str_len > buf_size - 1 || display_len + (UTF8_fixed_width ? 2 : wcwidth(wcs[0])) > max_display_len) // No enough space for Chinese character
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{
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outc('\a');
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iflush();
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continue;
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}
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memcpy(buffer + offset, input_str, (size_t)str_len);
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offset += str_len;
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buffer[offset] = '\0';
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display_len += 2;
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switch (echo_mode)
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{
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case DOECHO:
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prints(input_str);
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break;
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case NOECHO:
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prints("**");
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break;
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}
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}
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else if (ch >= 32 && ch < 127) // Printable character
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{
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if (offset + 1 > buf_size - 1 || display_len + 1 > max_display_len)
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{
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outc('\a');
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iflush();
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continue;
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}
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buffer[offset++] = (char)ch;
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buffer[offset] = '\0';
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display_len++;
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switch (echo_mode)
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{
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case DOECHO:
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outc((char)ch);
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break;
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case NOECHO:
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outc('*');
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break;
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}
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}
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else // Invalid character
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{
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continue;
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}
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iflush();
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}
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return offset;
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}
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int str_input(char *buffer, int buf_size, enum io_echo_t echo_mode)
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{
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int len;
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buffer[0] = '\0';
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len = _str_input(buffer, buf_size, buf_size, echo_mode);
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prints("\r\n");
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iflush();
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return len;
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}
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int get_data(int row, int col, char *prompt, char *buffer, int buf_size, int max_display_len)
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{
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int len = 0;
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int col_cur = 0;
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int ch;
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int offset = 0;
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int eol;
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int display_len;
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char input_str[5];
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int str_len = 0;
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wchar_t wcs[2];
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int wc_len;
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char c;
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buffer[buf_size - 1] = '\0';
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offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
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buffer[offset] = '\0';
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len = offset;
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col_cur = col + str_length(prompt, 1) + display_len;
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moveto(row, col);
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prints("%s", prompt);
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prints("%s", buffer);
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prints("%*s", max_display_len - display_len, "");
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moveto(row, col_cur);
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iflush();
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igetch_reset();
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while (!SYS_server_exit)
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{
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ch = igetch_t(MIN(BBS_max_user_idle_time, 60));
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if (ch == CR)
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{
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break;
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}
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else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
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{
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return -1;
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}
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else if (ch == LF || ch == '\0')
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{
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continue;
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}
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else if (ch == BACKSPACE)
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{
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if (offset > 0)
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{
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str_len = 1;
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offset--;
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if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
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{
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while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
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{
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str_len++;
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offset--;
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}
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if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
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| 357 |
{
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| 358 |
log_error("mbstowcs() error\n");
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}
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wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
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| 362 |
if (wc_len == 2)
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{
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display_len--;
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col_cur--;
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}
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}
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memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
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len -= str_len;
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buffer[len] = '\0';
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display_len--;
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| 373 |
col_cur--;
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| 374 |
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| 375 |
moveto(row, col_cur);
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| 376 |
prints("%s", buffer + offset);
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| 377 |
prints("%*s", max_display_len - display_len, "");
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| 378 |
moveto(row, col_cur);
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iflush();
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| 380 |
}
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| 381 |
continue;
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| 382 |
}
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| 383 |
else if (ch == KEY_DEL)
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{
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| 385 |
if (offset < len)
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| 386 |
{
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| 387 |
if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
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| 388 |
{
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| 389 |
str_len = 0;
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| 390 |
c = (char)(buffer[offset] & 0xf0);
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| 391 |
while (c & 0x80)
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| 392 |
{
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| 393 |
str_len++;
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| 394 |
c = (c & 0x7f) << 1;
|
| 395 |
}
|
| 396 |
display_len--;
|
| 397 |
}
|
| 398 |
else
|
| 399 |
{
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| 400 |
str_len = 1;
|
| 401 |
}
|
| 402 |
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| 403 |
memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
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| 404 |
len -= str_len;
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| 405 |
buffer[len] = '\0';
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| 406 |
display_len--;
|
| 407 |
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| 408 |
moveto(row, col_cur);
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| 409 |
prints("%s", buffer + offset);
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| 410 |
prints("%*s", max_display_len - display_len, "");
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| 411 |
moveto(row, col_cur);
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| 412 |
iflush();
|
| 413 |
}
|
| 414 |
continue;
|
| 415 |
}
|
| 416 |
else if (ch == KEY_LEFT)
|
| 417 |
{
|
| 418 |
if (offset > 0)
|
| 419 |
{
|
| 420 |
str_len = 1;
|
| 421 |
offset--;
|
| 422 |
if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
|
| 423 |
{
|
| 424 |
while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
|
| 425 |
{
|
| 426 |
str_len++;
|
| 427 |
offset--;
|
| 428 |
}
|
| 429 |
|
| 430 |
if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
|
| 431 |
{
|
| 432 |
log_error("mbstowcs() error\n");
|
| 433 |
}
|
| 434 |
wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
|
| 435 |
|
| 436 |
if (wc_len == 2)
|
| 437 |
{
|
| 438 |
col_cur--;
|
| 439 |
}
|
| 440 |
}
|
| 441 |
col_cur--;
|
| 442 |
|
| 443 |
moveto(row, col_cur);
|
| 444 |
iflush();
|
| 445 |
}
|
| 446 |
continue;
|
| 447 |
}
|
| 448 |
else if (ch == KEY_RIGHT)
|
| 449 |
{
|
| 450 |
if (offset < len)
|
| 451 |
{
|
| 452 |
str_len = 0;
|
| 453 |
if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
|
| 454 |
{
|
| 455 |
c = (char)(buffer[offset] & 0xf0);
|
| 456 |
while (c & 0x80)
|
| 457 |
{
|
| 458 |
str_len++;
|
| 459 |
c = (c & 0x7f) << 1;
|
| 460 |
}
|
| 461 |
|
| 462 |
if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
|
| 463 |
{
|
| 464 |
log_error("mbstowcs() error\n");
|
| 465 |
}
|
| 466 |
wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
|
| 467 |
|
| 468 |
if (wc_len == 2)
|
| 469 |
{
|
| 470 |
col_cur++;
|
| 471 |
}
|
| 472 |
}
|
| 473 |
else
|
| 474 |
{
|
| 475 |
str_len = 1;
|
| 476 |
}
|
| 477 |
|
| 478 |
col_cur++;
|
| 479 |
offset += str_len;
|
| 480 |
|
| 481 |
moveto(row, col_cur);
|
| 482 |
iflush();
|
| 483 |
}
|
| 484 |
continue;
|
| 485 |
}
|
| 486 |
else if (ch == KEY_HOME || ch == KEY_UP)
|
| 487 |
{
|
| 488 |
if (offset > 0)
|
| 489 |
{
|
| 490 |
offset = 0;
|
| 491 |
col_cur = col + str_length(prompt, 1);
|
| 492 |
|
| 493 |
moveto(row, col_cur);
|
| 494 |
iflush();
|
| 495 |
}
|
| 496 |
continue;
|
| 497 |
}
|
| 498 |
else if (ch == KEY_END || ch == KEY_DOWN)
|
| 499 |
{
|
| 500 |
if (offset < len)
|
| 501 |
{
|
| 502 |
offset = len;
|
| 503 |
col_cur = col + str_length(prompt, 1) + display_len;
|
| 504 |
|
| 505 |
moveto(row, col_cur);
|
| 506 |
iflush();
|
| 507 |
}
|
| 508 |
continue;
|
| 509 |
}
|
| 510 |
else if (ch > 255 || iscntrl(ch))
|
| 511 |
{
|
| 512 |
continue;
|
| 513 |
}
|
| 514 |
else if ((ch & 0xff80) == 0x80) // head of multi-byte character
|
| 515 |
{
|
| 516 |
str_len = 0;
|
| 517 |
c = (char)(ch & 0xf0);
|
| 518 |
while (c & 0x80)
|
| 519 |
{
|
| 520 |
input_str[str_len] = (char)(ch - 256);
|
| 521 |
str_len++;
|
| 522 |
c = (c & 0x7f) << 1;
|
| 523 |
|
| 524 |
if ((c & 0x80) == 0) // Input completed
|
| 525 |
{
|
| 526 |
break;
|
| 527 |
}
|
| 528 |
|
| 529 |
// Expect additional bytes of input
|
| 530 |
ch = igetch(100); // 0.1 second
|
| 531 |
if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
|
| 532 |
{
|
| 533 |
#ifdef _DEBUG
|
| 534 |
log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
|
| 535 |
#endif
|
| 536 |
str_len = 0;
|
| 537 |
break;
|
| 538 |
}
|
| 539 |
}
|
| 540 |
input_str[str_len] = '\0';
|
| 541 |
|
| 542 |
if (str_len == 0) // Incomplete input
|
| 543 |
{
|
| 544 |
continue;
|
| 545 |
}
|
| 546 |
|
| 547 |
if (mbstowcs(wcs, input_str, 1) == (size_t)-1)
|
| 548 |
{
|
| 549 |
log_error("mbstowcs() error\n");
|
| 550 |
}
|
| 551 |
wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
|
| 552 |
|
| 553 |
if (len + str_len > buf_size - 1 ||
|
| 554 |
display_len + wc_len > max_display_len) // No enough space for Chinese character
|
| 555 |
{
|
| 556 |
outc('\a');
|
| 557 |
iflush();
|
| 558 |
continue;
|
| 559 |
}
|
| 560 |
|
| 561 |
memmove(buffer + offset + str_len, buffer + offset, (size_t)(len - offset));
|
| 562 |
memcpy(buffer + offset, input_str, (size_t)str_len);
|
| 563 |
len += str_len;
|
| 564 |
buffer[len] = '\0';
|
| 565 |
display_len += wc_len;
|
| 566 |
|
| 567 |
moveto(row, col_cur);
|
| 568 |
prints("%s", buffer + offset);
|
| 569 |
prints("%*s", max_display_len - display_len, "");
|
| 570 |
|
| 571 |
col_cur += wc_len;
|
| 572 |
|
| 573 |
moveto(row, col_cur);
|
| 574 |
iflush();
|
| 575 |
|
| 576 |
offset += str_len;
|
| 577 |
}
|
| 578 |
else if (ch >= 32 && ch < 127) // Printable character
|
| 579 |
{
|
| 580 |
if (len + 1 > buf_size - 1 || display_len + 1 > max_display_len)
|
| 581 |
{
|
| 582 |
outc('\a');
|
| 583 |
iflush();
|
| 584 |
continue;
|
| 585 |
}
|
| 586 |
|
| 587 |
memmove(buffer + offset + 1, buffer + offset, (size_t)(len - offset));
|
| 588 |
buffer[offset] = (char)ch;
|
| 589 |
len++;
|
| 590 |
buffer[len] = '\0';
|
| 591 |
display_len++;
|
| 592 |
|
| 593 |
moveto(row, col_cur);
|
| 594 |
prints("%s", buffer + offset);
|
| 595 |
prints("%*s", max_display_len - display_len, "");
|
| 596 |
|
| 597 |
col_cur++;
|
| 598 |
|
| 599 |
moveto(row, col_cur);
|
| 600 |
iflush();
|
| 601 |
|
| 602 |
offset++;
|
| 603 |
}
|
| 604 |
else // Invalid character
|
| 605 |
{
|
| 606 |
continue;
|
| 607 |
}
|
| 608 |
}
|
| 609 |
|
| 610 |
return len;
|
| 611 |
}
|
| 612 |
|
| 613 |
int display_data(const void *p_data, long display_line_total, const long *p_line_offsets, int eof_exit,
|
| 614 |
display_data_key_handler key_handler, const char *help_filename)
|
| 615 |
{
|
| 616 |
static int show_help = 1;
|
| 617 |
char buffer[LINE_BUFFER_LEN];
|
| 618 |
DISPLAY_CTX ctx;
|
| 619 |
int ch = 0;
|
| 620 |
int input_ok;
|
| 621 |
const int screen_begin_row = 1;
|
| 622 |
const int screen_row_total = SCREEN_ROWS - screen_begin_row;
|
| 623 |
int output_current_row = screen_begin_row;
|
| 624 |
int output_end_row = SCREEN_ROWS - 1;
|
| 625 |
long int line_current = 0;
|
| 626 |
long int len;
|
| 627 |
long int percentile;
|
| 628 |
int loop;
|
| 629 |
int eol, display_len;
|
| 630 |
|
| 631 |
clrline(output_current_row, SCREEN_ROWS);
|
| 632 |
|
| 633 |
// update msg_ext with extended key handler
|
| 634 |
if (key_handler(&ch, &ctx) != 0)
|
| 635 |
{
|
| 636 |
return ch;
|
| 637 |
}
|
| 638 |
|
| 639 |
loop = 1;
|
| 640 |
while (!SYS_server_exit && loop)
|
| 641 |
{
|
| 642 |
if (eof_exit > 0 && line_current >= display_line_total)
|
| 643 |
{
|
| 644 |
if (eof_exit == 1)
|
| 645 |
{
|
| 646 |
ch = press_any_key();
|
| 647 |
}
|
| 648 |
else // if (eof_exit == 2)
|
| 649 |
{
|
| 650 |
iflush();
|
| 651 |
}
|
| 652 |
|
| 653 |
loop = 0;
|
| 654 |
break;
|
| 655 |
}
|
| 656 |
|
| 657 |
if (line_current >= display_line_total || output_current_row > output_end_row)
|
| 658 |
{
|
| 659 |
ctx.reach_begin = (line_current < output_current_row ? 1 : 0);
|
| 660 |
|
| 661 |
if (line_current - (output_current_row - screen_begin_row) + screen_row_total < display_line_total)
|
| 662 |
{
|
| 663 |
percentile = (line_current - (output_current_row - screen_begin_row) + screen_row_total) * 100 / display_line_total;
|
| 664 |
ctx.reach_end = 0;
|
| 665 |
}
|
| 666 |
else
|
| 667 |
{
|
| 668 |
percentile = 100;
|
| 669 |
ctx.reach_end = 1;
|
| 670 |
}
|
| 671 |
|
| 672 |
ctx.line_top = line_current - (output_current_row - screen_begin_row) + 1;
|
| 673 |
ctx.line_bottom = MIN(line_current - (output_current_row - screen_begin_row) + screen_row_total, display_line_total);
|
| 674 |
|
| 675 |
snprintf(buffer, sizeof(buffer),
|
| 676 |
"\033[1;44;33m第\033[32m%ld\033[33m-\033[32m%ld\033[33m行 (\033[32m%ld%%\033[33m) %s",
|
| 677 |
ctx.line_top,
|
| 678 |
ctx.line_bottom,
|
| 679 |
percentile,
|
| 680 |
ctx.msg);
|
| 681 |
|
| 682 |
len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
|
| 683 |
for (; display_len < SCREEN_COLS; display_len++)
|
| 684 |
{
|
| 685 |
buffer[len++] = ' ';
|
| 686 |
}
|
| 687 |
buffer[len] = '\0';
|
| 688 |
strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
|
| 689 |
|
| 690 |
moveto(SCREEN_ROWS, 0);
|
| 691 |
prints("%s", buffer);
|
| 692 |
iflush();
|
| 693 |
|
| 694 |
input_ok = 0;
|
| 695 |
while (!SYS_server_exit && !input_ok)
|
| 696 |
{
|
| 697 |
ch = igetch_t(BBS_max_user_idle_time);
|
| 698 |
input_ok = 1;
|
| 699 |
|
| 700 |
if (ch != KEY_NULL && ch != KEY_TIMEOUT)
|
| 701 |
{
|
| 702 |
BBS_last_access_tm = time(NULL);
|
| 703 |
}
|
| 704 |
|
| 705 |
// extended key handler
|
| 706 |
if (key_handler(&ch, &ctx) != 0)
|
| 707 |
{
|
| 708 |
goto cleanup;
|
| 709 |
}
|
| 710 |
|
| 711 |
switch (ch)
|
| 712 |
{
|
| 713 |
case KEY_NULL:
|
| 714 |
log_error("KEY_NULL\n");
|
| 715 |
goto cleanup;
|
| 716 |
case KEY_TIMEOUT:
|
| 717 |
log_error("User input timeout\n");
|
| 718 |
goto cleanup;
|
| 719 |
case KEY_HOME:
|
| 720 |
if (line_current - output_current_row < 0) // Reach begin
|
| 721 |
{
|
| 722 |
break;
|
| 723 |
}
|
| 724 |
line_current = 0;
|
| 725 |
output_current_row = screen_begin_row;
|
| 726 |
output_end_row = SCREEN_ROWS - 1;
|
| 727 |
clrline(output_current_row, SCREEN_ROWS);
|
| 728 |
break;
|
| 729 |
case KEY_END:
|
| 730 |
if (display_line_total < screen_row_total)
|
| 731 |
{
|
| 732 |
break;
|
| 733 |
}
|
| 734 |
line_current = display_line_total - screen_row_total;
|
| 735 |
output_current_row = screen_begin_row;
|
| 736 |
output_end_row = SCREEN_ROWS - 1;
|
| 737 |
clrline(output_current_row, SCREEN_ROWS);
|
| 738 |
break;
|
| 739 |
case KEY_UP:
|
| 740 |
if (line_current - output_current_row < 0) // Reach begin
|
| 741 |
{
|
| 742 |
break;
|
| 743 |
}
|
| 744 |
line_current -= output_current_row;
|
| 745 |
output_current_row = screen_begin_row;
|
| 746 |
// screen_end_line = screen_begin_line;
|
| 747 |
// prints("\033[T"); // Scroll down 1 line
|
| 748 |
output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
|
| 749 |
break;
|
| 750 |
case CR:
|
| 751 |
case KEY_DOWN:
|
| 752 |
if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= display_line_total) // Reach end
|
| 753 |
{
|
| 754 |
break;
|
| 755 |
}
|
| 756 |
line_current += (screen_row_total - (output_current_row - screen_begin_row));
|
| 757 |
output_current_row = screen_row_total;
|
| 758 |
output_end_row = SCREEN_ROWS - 1;
|
| 759 |
moveto(SCREEN_ROWS, 0);
|
| 760 |
clrtoeol();
|
| 761 |
// prints("\033[S"); // Scroll up 1 line
|
| 762 |
prints("\n"); // Legacy Cterm only works with this line
|
| 763 |
break;
|
| 764 |
case KEY_PGUP:
|
| 765 |
if (line_current - output_current_row < 0) // Reach begin
|
| 766 |
{
|
| 767 |
break;
|
| 768 |
}
|
| 769 |
line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
|
| 770 |
if (line_current < 0)
|
| 771 |
{
|
| 772 |
line_current = 0;
|
| 773 |
}
|
| 774 |
output_current_row = screen_begin_row;
|
| 775 |
output_end_row = SCREEN_ROWS - 1;
|
| 776 |
clrline(output_current_row, SCREEN_ROWS);
|
| 777 |
break;
|
| 778 |
case KEY_SPACE:
|
| 779 |
case KEY_PGDN:
|
| 780 |
if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= display_line_total) // Reach end
|
| 781 |
{
|
| 782 |
break;
|
| 783 |
}
|
| 784 |
line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
|
| 785 |
if (line_current + screen_row_total > display_line_total) // No enough lines to display
|
| 786 |
{
|
| 787 |
line_current = display_line_total - screen_row_total;
|
| 788 |
}
|
| 789 |
output_current_row = screen_begin_row;
|
| 790 |
output_end_row = SCREEN_ROWS - 1;
|
| 791 |
clrline(output_current_row, SCREEN_ROWS);
|
| 792 |
break;
|
| 793 |
case KEY_ESC:
|
| 794 |
case KEY_LEFT:
|
| 795 |
loop = 0;
|
| 796 |
break;
|
| 797 |
case 'h':
|
| 798 |
if (!show_help) // Not reentrant
|
| 799 |
{
|
| 800 |
break;
|
| 801 |
}
|
| 802 |
// Display help information
|
| 803 |
show_help = 0;
|
| 804 |
display_file(help_filename, 1);
|
| 805 |
show_help = 1;
|
| 806 |
case KEY_F5:
|
| 807 |
// Refresh after display help information
|
| 808 |
line_current -= (output_current_row - screen_begin_row);
|
| 809 |
output_current_row = screen_begin_row;
|
| 810 |
output_end_row = SCREEN_ROWS - 1;
|
| 811 |
clrline(output_current_row, SCREEN_ROWS);
|
| 812 |
break;
|
| 813 |
case 0: // Refresh bottom line
|
| 814 |
break;
|
| 815 |
default:
|
| 816 |
input_ok = 0;
|
| 817 |
break;
|
| 818 |
}
|
| 819 |
}
|
| 820 |
|
| 821 |
continue;
|
| 822 |
}
|
| 823 |
|
| 824 |
len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
|
| 825 |
if (len >= sizeof(buffer))
|
| 826 |
{
|
| 827 |
log_error("Buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
|
| 828 |
len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
|
| 829 |
len = sizeof(buffer) - 1;
|
| 830 |
}
|
| 831 |
else if (len < 0)
|
| 832 |
{
|
| 833 |
log_error("Incorrect line offsets: len=%ld(%ld - %ld) line=%ld \n",
|
| 834 |
len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
|
| 835 |
len = 0;
|
| 836 |
}
|
| 837 |
|
| 838 |
memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
|
| 839 |
buffer[len] = '\0';
|
| 840 |
|
| 841 |
moveto(output_current_row, 0);
|
| 842 |
clrtoeol();
|
| 843 |
prints("%s", buffer);
|
| 844 |
line_current++;
|
| 845 |
output_current_row++;
|
| 846 |
}
|
| 847 |
|
| 848 |
cleanup:
|
| 849 |
return ch;
|
| 850 |
}
|
| 851 |
|
| 852 |
int display_file_key_handler(int *p_key, DISPLAY_CTX *p_ctx)
|
| 853 |
{
|
| 854 |
switch (*p_key)
|
| 855 |
{
|
| 856 |
case 0: // Set msg
|
| 857 |
snprintf(p_ctx->msg, sizeof(p_ctx->msg),
|
| 858 |
"| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] | "
|
| 859 |
"移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] | "
|
| 860 |
"帮助[\033[32mh\033[33m] |");
|
| 861 |
break;
|
| 862 |
}
|
| 863 |
|
| 864 |
return 0;
|
| 865 |
}
|
| 866 |
|
| 867 |
int display_file(const char *filename, int eof_exit)
|
| 868 |
{
|
| 869 |
int ret;
|
| 870 |
const void *p_shm;
|
| 871 |
size_t data_len;
|
| 872 |
long line_total;
|
| 873 |
const void *p_data;
|
| 874 |
const long *p_line_offsets;
|
| 875 |
|
| 876 |
if ((p_shm = get_file_shm_readonly(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
|
| 877 |
{
|
| 878 |
log_error("get_file_shm(%s) error\n", filename);
|
| 879 |
return KEY_NULL;
|
| 880 |
}
|
| 881 |
|
| 882 |
if (user_online_update("VIEW_FILE") < 0)
|
| 883 |
{
|
| 884 |
log_error("user_online_update(VIEW_FILE) error\n");
|
| 885 |
}
|
| 886 |
|
| 887 |
ret = display_data(p_data, line_total, p_line_offsets, eof_exit, display_file_key_handler, DATA_READ_HELP);
|
| 888 |
|
| 889 |
if (detach_file_shm(p_shm) < 0)
|
| 890 |
{
|
| 891 |
log_error("detach_file_shm(%s) error\n", filename);
|
| 892 |
}
|
| 893 |
|
| 894 |
return ret;
|
| 895 |
}
|
| 896 |
|
| 897 |
int show_top(const char *str_left, const char *str_middle, const char *str_right)
|
| 898 |
{
|
| 899 |
char str_left_f[STR_TOP_LEFT_MAX_LEN + 1];
|
| 900 |
char str_middle_f[STR_TOP_MIDDLE_MAX_LEN + 1];
|
| 901 |
char str_right_f[STR_TOP_RIGHT_MAX_LEN + 1];
|
| 902 |
int str_left_len;
|
| 903 |
int str_middle_len;
|
| 904 |
int str_right_len;
|
| 905 |
int eol;
|
| 906 |
int len;
|
| 907 |
|
| 908 |
strncpy(str_left_f, str_left, sizeof(str_left_f) - 1);
|
| 909 |
str_left_f[sizeof(str_left_f) - 1] = '\0';
|
| 910 |
len = split_line(str_left_f, STR_TOP_LEFT_MAX_LEN / 2, &eol, &str_left_len, 1);
|
| 911 |
str_left_f[len] = '\0';
|
| 912 |
|
| 913 |
strncpy(str_middle_f, str_middle, sizeof(str_middle_f) - 1);
|
| 914 |
str_middle_f[sizeof(str_middle_f) - 1] = '\0';
|
| 915 |
len = split_line(str_middle, STR_TOP_MIDDLE_MAX_LEN / 2, &eol, &str_middle_len, 1);
|
| 916 |
str_middle_f[len] = '\0';
|
| 917 |
|
| 918 |
strncpy(str_right_f, str_right, sizeof(str_right_f) - 1);
|
| 919 |
str_right_f[sizeof(str_right_f) - 1] = '\0';
|
| 920 |
len = split_line(str_right, STR_TOP_RIGHT_MAX_LEN / 2, &eol, &str_right_len, 1);
|
| 921 |
str_right_f[len] = '\0';
|
| 922 |
|
| 923 |
moveto(1, 0);
|
| 924 |
clrtoeol();
|
| 925 |
prints("\033[1;44;33m%s\033[37m%*s%s\033[33m%*s%s\033[m",
|
| 926 |
str_left_f, 44 - str_left_len - str_middle_len, "",
|
| 927 |
str_middle_f, 36 - str_right_len, "", str_right_f);
|
| 928 |
|
| 929 |
return 0;
|
| 930 |
}
|
| 931 |
|
| 932 |
int show_bottom(const char *msg)
|
| 933 |
{
|
| 934 |
char str_time[LINE_BUFFER_LEN];
|
| 935 |
int len_str_time;
|
| 936 |
time_t time_online;
|
| 937 |
struct tm *tm_online;
|
| 938 |
char msg_f[LINE_BUFFER_LEN];
|
| 939 |
int eol;
|
| 940 |
int len_msg;
|
| 941 |
int len;
|
| 942 |
int len_username;
|
| 943 |
char str_tm_online[LINE_BUFFER_LEN];
|
| 944 |
int len_str_tm_online;
|
| 945 |
|
| 946 |
len_str_time = (int)get_time_str(str_time, sizeof(str_time));
|
| 947 |
|
| 948 |
msg_f[0] = '\0';
|
| 949 |
len_msg = 0;
|
| 950 |
if (msg != NULL)
|
| 951 |
{
|
| 952 |
strncpy(msg_f, msg, sizeof(msg_f) - 1);
|
| 953 |
msg_f[sizeof(msg_f) - 1] = '\0';
|
| 954 |
len = split_line(msg_f, 23, &eol, &len_msg, 1);
|
| 955 |
msg_f[len] = '\0';
|
| 956 |
}
|
| 957 |
|
| 958 |
len_username = (int)strnlen(BBS_username, sizeof(BBS_username));
|
| 959 |
|
| 960 |
time_online = time(NULL) - BBS_login_tm;
|
| 961 |
tm_online = gmtime(&time_online);
|
| 962 |
if (tm_online->tm_mday > 1)
|
| 963 |
{
|
| 964 |
snprintf(str_tm_online, sizeof(str_tm_online),
|
| 965 |
"\033[36m%d\033[33md \033[36m%d\033[33m:\033[36m%.2d",
|
| 966 |
tm_online->tm_mday - 1, tm_online->tm_hour, tm_online->tm_min);
|
| 967 |
}
|
| 968 |
else
|
| 969 |
{
|
| 970 |
snprintf(str_tm_online, sizeof(str_tm_online),
|
| 971 |
"\033[36m%d\033[33m:\033[36m%.2d",
|
| 972 |
tm_online->tm_hour, tm_online->tm_min);
|
| 973 |
}
|
| 974 |
len_str_tm_online = str_length(str_tm_online, 1);
|
| 975 |
|
| 976 |
moveto(SCREEN_ROWS, 0);
|
| 977 |
clrtoeol();
|
| 978 |
prints("\033[1;44;33m时间[\033[36m%s\033[33m]%s%*s \033[33m用户[\033[36m%s\033[33m][%s\033[33m]\033[m",
|
| 979 |
str_time, msg_f, 65 - len_str_time - len_msg - len_username - len_str_tm_online,
|
| 980 |
"", BBS_username, str_tm_online);
|
| 981 |
|
| 982 |
return 0;
|
| 983 |
}
|
| 984 |
|
| 985 |
int show_active_board()
|
| 986 |
{
|
| 987 |
static int line_current = 0;
|
| 988 |
static const void *p_shm = NULL;
|
| 989 |
static size_t data_len;
|
| 990 |
static long line_total;
|
| 991 |
static const void *p_data;
|
| 992 |
static const long *p_line_offsets;
|
| 993 |
|
| 994 |
static time_t t_last_show = 0;
|
| 995 |
static int line_last = 0;
|
| 996 |
|
| 997 |
char buffer[LINE_BUFFER_LEN];
|
| 998 |
long int len;
|
| 999 |
|
| 1000 |
if (p_shm == NULL)
|
| 1001 |
{
|
| 1002 |
if ((p_shm = get_file_shm_readonly(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
|
| 1003 |
{
|
| 1004 |
log_error("get_file_shm(%s) error\n", DATA_ACTIVE_BOARD);
|
| 1005 |
return KEY_NULL;
|
| 1006 |
}
|
| 1007 |
}
|
| 1008 |
|
| 1009 |
if (time(NULL) - t_last_show >= 10)
|
| 1010 |
{
|
| 1011 |
line_last = line_current;
|
| 1012 |
t_last_show = time(NULL);
|
| 1013 |
}
|
| 1014 |
else
|
| 1015 |
{
|
| 1016 |
line_current = line_last;
|
| 1017 |
}
|
| 1018 |
|
| 1019 |
clrline(2, 2 + ACTIVE_BOARD_HEIGHT);
|
| 1020 |
|
| 1021 |
for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++)
|
| 1022 |
{
|
| 1023 |
len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
|
| 1024 |
if (len >= LINE_BUFFER_LEN)
|
| 1025 |
{
|
| 1026 |
log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
|
| 1027 |
len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
|
| 1028 |
len = LINE_BUFFER_LEN - 1;
|
| 1029 |
}
|
| 1030 |
|
| 1031 |
memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
|
| 1032 |
buffer[len] = '\0';
|
| 1033 |
|
| 1034 |
moveto(3 + i, 0);
|
| 1035 |
prints("%s", buffer);
|
| 1036 |
|
| 1037 |
line_current++;
|
| 1038 |
if (line_current >= line_total)
|
| 1039 |
{
|
| 1040 |
line_current = 0;
|
| 1041 |
break;
|
| 1042 |
}
|
| 1043 |
}
|
| 1044 |
|
| 1045 |
return 0;
|
| 1046 |
}
|
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