--- lbbs/src/screen.c 2004/11/30 07:10:32 1.7 +++ lbbs/src/screen.c 2025/10/09 12:20:31 1.108 @@ -1,361 +1,993 @@ /*************************************************************************** - screen.c - description - ------------------- - begin : Mon Oct 18 2004 - copyright : (C) 2004 by Leaflet - email : leaflet@leafok.com + screen.c - description + ------------------- + Copyright : (C) 2004-2025 by Leaflet + Email : leaflet@leafok.com ***************************************************************************/ /*************************************************************************** * * * 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 of the License, or * + * the Free Software Foundation; either version 3 of the License, or * * (at your option) any later version. * * * ***************************************************************************/ +#include "bbs.h" #include "common.h" +#include "editor.h" +#include "file_loader.h" #include "io.h" -#include -#include +#include "log.h" +#include "login.h" +#include "screen.h" +#include "str_process.h" +#include +#include +#include +#include +#include #include +#include +#include +#include +#include -int screen_lines = 24; +#define ACTIVE_BOARD_HEIGHT 8 -void -moveto (int row, int col) -{ - if (row >= 0) - { - prints ("\033[%d;%dH", row, col); - } - else - { - prints ("\r"); - } - iflush (); -} +#define STR_TOP_LEFT_MAX_LEN 80 +#define STR_TOP_MIDDLE_MAX_LEN 40 +#define STR_TOP_RIGHT_MAX_LEN 40 -void -clrtoeol () +static const char *get_time_str(char *s, size_t len) { - prints ("\033[K"); - iflush (); -} + static const char *weekday[] = { + "天", "一", "二", "三", "四", "五", "六"}; + time_t curtime; + struct tm local_tm; -void -clrline (int line_begin, int line_end) -{ - int i; + time(&curtime); + localtime_r(&curtime, &local_tm); + size_t j = strftime(s, len, "%b %d %H:%M 星期", &local_tm); + + if (j == 0 || j + strlen(weekday[local_tm.tm_wday]) + 1 > len) + { + return NULL; + } - for (i = line_begin; i <= line_end; i++) - { - moveto (i, 0); - prints ("\033[K"); - } + strncat(s, weekday[local_tm.tm_wday], len - 1 - j); - iflush (); + return s; } -void -clearscr () +void moveto(int row, int col) { - prints ("\33[2J"); - moveto (0, 0); - iflush (); + if (row >= 0) + { + prints("\033[%d;%dH", row, col); + } + else + { + prints("\r"); + } } -int -press_any_key () +void clrtoeol() { - moveto (screen_lines, 0); - clrtoeol (); + prints(CTRL_SEQ_CLR_LINE); +} - prints (" \033[1;33m...\033[0;37m"); - iflush (); +void clrline(int line_begin, int line_end) +{ + int i; - return igetch (); + for (i = line_begin; i <= line_end; i++) + { + moveto(i, 0); + prints(CTRL_SEQ_CLR_LINE); + } } -void -set_input_echo(int echo) +void clrtobot(int line_begin) { - char temp[256]; + moveto(line_begin, 0); + prints("\033[J"); + moveto(line_begin, 0); +} - if (echo) - { - outc ('\x83'); // ASCII code 131 - iflush (); - } - else - { -// outc ('\x85'); // ASCII code 133 - prints ("\xff\xfb\x01\xff\xfb\x03"); - iflush (); - igetch (); - igetch (); - } +void clearscr() +{ + prints("\033[2J"); + moveto(0, 0); } -int -str_input (char *buffer, int buffer_length, int echo_mode) +int press_any_key() { - char buf[256], ch; - int c, offset = 0, len, loop = 1, i, hz = 0; + moveto(SCREEN_ROWS, 0); + clrtoeol(); - memset (buffer, '\0', buffer_length); + prints(" \033[1;33m按任意键继续...\033[0;37m"); + iflush(); - while (c = igetch ()) - { - if (c == CR) - break; - if (c == LF) - continue; - if (c == BACKSPACE) - { - if (offset > 0) - { - buffer[--offset] = '\0'; - prints ("\b \b"); -// clrtoeol (); - iflush (); - } - continue; - } - if (c > 255 || iscntrl (c)) - { - continue; - } - if (c > 127 && c <= 255) - { - hz = (!hz); - } - if (offset >= buffer_length) + return igetch_t(MIN(MAX_DELAY_TIME, 60)); +} + +void set_input_echo(int echo) +{ + if (echo) { - outc ('\a'); - continue; + outc('\x83'); // ASCII code 131 + iflush(); } - buffer[offset++] = (char) c; - buffer[offset] = '\0'; - switch (echo_mode) + else { - case 0: - outc ((char) c); - break; - case 1: - outc ('*'); - break; + // outc ('\x85'); // ASCII code 133 + prints("\xff\xfb\x01\xff\xfb\x03"); + iflush(); + igetch(0); + igetch_reset(); } - if (!hz) +} + +static int _str_input(char *buffer, int buf_size, int max_display_len, int echo_mode) +{ + int ch; + int offset = 0; + int eol; + int display_len; + char input_str[4]; + int str_len = 0; + char c; + + buffer[buf_size - 1] = '\0'; + offset = split_line(buffer, max_display_len, &eol, &display_len, 0); + + igetch_reset(); + + while (!SYS_server_exit) { - iflush (); - } - } + ch = igetch_t(MIN(MAX_DELAY_TIME, 60)); - prints ("\r\n"); - iflush (); + if (ch == CR) + { + igetch_reset(); + break; + } + else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe + { + return -1; + } + else if (ch == LF || ch == '\0') + { + continue; + } + else if (ch == BACKSPACE) + { + if (offset > 0) + { + offset--; + if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8 + { + while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000) + { + offset--; + } + display_len--; + prints("\033[D \033[D"); + } + buffer[offset] = '\0'; + display_len--; + prints("\033[D \033[D"); + iflush(); + } + continue; + } + else if (ch > 255 || iscntrl(ch)) + { + continue; + } + else if ((ch & 0xff80) == 0x80) // head of multi-byte character + { + str_len = 0; + c = (char)(ch & 0b11110000); + while (c & 0b10000000) + { + input_str[str_len] = (char)(ch - 256); + str_len++; + c = (c & 0b01111111) << 1; + + if ((c & 0b10000000) == 0) // Input completed + { + break; + } + + // Expect additional bytes of input + ch = igetch(100); // 0.1 second + if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input + { +#ifdef _DEBUG + log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len); +#endif + str_len = 0; + break; + } + } + + if (str_len == 0) // Incomplete input + { + continue; + } - return offset; + if (offset + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character + { + outc('\a'); + iflush(); + continue; + } + + memcpy(buffer + offset, input_str, (size_t)str_len); + offset += str_len; + buffer[offset] = '\0'; + display_len += 2; + + switch (echo_mode) + { + case DOECHO: + prints(input_str); + break; + case NOECHO: + prints("**"); + break; + } + } + else if (ch >= 32 && ch < 127) // Printable character + { + if (offset + 1 > buf_size - 1 || display_len + 1 > max_display_len) + { + outc('\a'); + iflush(); + continue; + } + + buffer[offset++] = (char)ch; + buffer[offset] = '\0'; + display_len++; + + switch (echo_mode) + { + case DOECHO: + outc((char)ch); + break; + case NOECHO: + outc('*'); + break; + } + } + else // Invalid character + { + continue; + } + + iflush(); + } + + return offset; } -int -display_file (const char *filename) +int str_input(char *buffer, int buf_size, int echo_mode) { - char buffer[260]; - FILE *fin; - int i; + int len; - if ((fin = fopen (filename, "r")) != NULL) - { - while (fgets (buffer, 255, fin)) - { - i = strlen (buffer); - if (buffer[i - 1] == '\n' && buffer[i - 2] != '\r') - { - buffer[i - 1] = '\r'; - buffer[i] = '\n'; - buffer[i + 1] = '\0'; - } - prints (buffer); - iflush (); - } - fclose(fin); - return 0; - } - - return -1; -} + buffer[0] = '\0'; -int -display_file_ex (const char *filename, int begin_line, int wait) + len = _str_input(buffer, buf_size, buf_size, echo_mode); + + prints("\r\n"); + iflush(); + + return len; +}; + +int get_data(int row, int col, char *prompt, char *buffer, int buf_size, int max_display_len) { - char buffer[260], temp[256]; - int i, ch, input_ok; - long int line, c_line_begin = 0, c_line_total=0; - long int f_line, f_size, f_offset; - FILE *fin; - struct stat f_stat; + int len = 0; + int col_cur = 0; + int ch; + int offset = 0; + int eol; + int display_len; + char input_str[4]; + int str_len = 0; + char c; - clrline (begin_line, screen_lines); - line = begin_line; - moveto (line, 0); + buffer[buf_size - 1] = '\0'; + offset = split_line(buffer, max_display_len, &eol, &display_len, 0); + buffer[offset] = '\0'; + len = offset; + col_cur = col + str_length(prompt, 1) + display_len; - if ((fin = fopen (filename, "r")) != NULL) - { - if (fstat (fileno (fin), &f_stat) != 0) + moveto(row, col); + prints("%s", prompt); + prints("%s", buffer); + prints("%*s", max_display_len - display_len, ""); + moveto(row, col_cur); + iflush(); + + igetch_reset(); + + while (!SYS_server_exit) { - log_error ("Get file stat failed\n"); - return -1; + ch = igetch_t(MIN(MAX_DELAY_TIME, 60)); + + if (ch == CR) + { + igetch_reset(); + break; + } + else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe + { + return -1; + } + else if (ch == LF || ch == '\0') + { + continue; + } + else if (ch == BACKSPACE) + { + if (offset > 0) + { + str_len = 1; + offset--; + if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8 + { + while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000) + { + str_len++; + offset--; + } + display_len--; + col_cur--; + } + + memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len)); + len -= str_len; + buffer[len] = '\0'; + display_len--; + col_cur--; + + moveto(row, col_cur); + prints("%s", buffer + offset); + prints("%*s", max_display_len - display_len, ""); + moveto(row, col_cur); + iflush(); + } + continue; + } + else if (ch == KEY_DEL) + { + if (offset < len) + { + if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character + { + str_len = 0; + c = (char)(buffer[offset] & 0b11110000); + while (c & 0b10000000) + { + str_len++; + c = (c & 0b01111111) << 1; + } + display_len--; + } + else + { + str_len = 1; + } + + memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len)); + len -= str_len; + buffer[len] = '\0'; + display_len--; + + moveto(row, col_cur); + prints("%s", buffer + offset); + prints("%*s", max_display_len - display_len, ""); + moveto(row, col_cur); + iflush(); + } + continue; + } + else if (ch == KEY_LEFT) + { + if (offset > 0) + { + str_len = 1; + offset--; + if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8 + { + while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000) + { + str_len++; + offset--; + } + col_cur--; + } + col_cur--; + + moveto(row, col_cur); + iflush(); + } + continue; + } + else if (ch == KEY_RIGHT) + { + if (offset < len) + { + str_len = 0; + if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character + { + c = (char)(buffer[offset] & 0b11110000); + while (c & 0b10000000) + { + str_len++; + c = (c & 0b01111111) << 1; + } + col_cur++; + } + else + { + str_len = 1; + } + + col_cur++; + offset += str_len; + + moveto(row, col_cur); + iflush(); + } + continue; + } + else if (ch == KEY_HOME || ch == KEY_UP) + { + if (offset > 0) + { + offset = 0; + col_cur = col + str_length(prompt, 1); + + moveto(row, col_cur); + iflush(); + } + continue; + } + else if (ch == KEY_END || ch == KEY_DOWN) + { + if (offset < len) + { + offset = len; + col_cur = col + str_length(prompt, 1) + display_len; + + moveto(row, col_cur); + iflush(); + } + continue; + } + else if (ch > 255 || iscntrl(ch)) + { + continue; + } + else if ((ch & 0xff80) == 0x80) // head of multi-byte character + { + str_len = 0; + c = (char)(ch & 0b11110000); + while (c & 0b10000000) + { + input_str[str_len] = (char)(ch - 256); + str_len++; + c = (c & 0b01111111) << 1; + + if ((c & 0b10000000) == 0) // Input completed + { + break; + } + + // Expect additional bytes of input + ch = igetch(100); // 0.1 second + if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input + { +#ifdef _DEBUG + log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len); +#endif + str_len = 0; + break; + } + } + + if (str_len == 0) // Incomplete input + { + continue; + } + + if (len + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character + { + outc('\a'); + iflush(); + continue; + } + + memmove(buffer + offset + str_len, buffer + offset, (size_t)(len - offset)); + memcpy(buffer + offset, input_str, (size_t)str_len); + len += str_len; + buffer[len] = '\0'; + display_len += 2; + + moveto(row, col_cur); + prints("%s", buffer + offset); + prints("%*s", max_display_len - display_len, ""); + + col_cur += 2; + + moveto(row, col_cur); + iflush(); + + offset += str_len; + } + else if (ch >= 32 && ch < 127) // Printable character + { + if (len + 1 > buf_size - 1 || display_len + 1 > max_display_len) + { + outc('\a'); + iflush(); + continue; + } + + memmove(buffer + offset + 1, buffer + offset, (size_t)(len - offset)); + buffer[offset] = (char)ch; + len++; + buffer[len] = '\0'; + display_len++; + + moveto(row, col_cur); + prints("%s", buffer + offset); + prints("%*s", max_display_len - display_len, ""); + + col_cur++; + + moveto(row, col_cur); + iflush(); + + offset++; + } + else // Invalid character + { + continue; + } } - f_size = f_stat.st_size; - while (fgets (buffer, 255, fin)) - c_line_total ++; - rewind (fin); + return len; +} - while (fgets (buffer, 255, fin)) - { - if (line >= screen_lines) - { - f_offset = ftell (fin); +int display_data(const void *p_data, long display_line_total, const long *p_line_offsets, int eof_exit, + display_data_key_handler key_handler, const char *help_filename) +{ + static int show_help = 1; + char buffer[LINE_BUFFER_LEN]; + DISPLAY_CTX ctx; + int ch = 0; + int input_ok; + const int screen_begin_row = 1; + const int screen_row_total = SCREEN_ROWS - screen_begin_row; + int output_current_row = screen_begin_row; + int output_end_row = SCREEN_ROWS - 1; + long int line_current = 0; + long int len; + long int percentile; + int loop; + int eol, display_len; - moveto (screen_lines, 0); - prints - ("\033[1;44;32m滹 (%d%%)\033[33m //PgUp/PgDn ƶ ? ˵ \033[m", - (f_offset-strlen(buffer)) * 100 / f_size); - iflush (); + clrline(output_current_row, SCREEN_ROWS); - input_ok = 0; - while (!input_ok) + // update msg_ext with extended key handler + if (key_handler(&ch, &ctx) != 0) + { + return ch; + } + + loop = 1; + while (!SYS_server_exit && loop) + { + if (eof_exit > 0 && line_current >= display_line_total && display_line_total <= screen_row_total) { - ch = igetch (); - input_ok = 1; - switch (ch) - { - case KEY_UP: - c_line_begin--; - if (c_line_begin >= 0) + if (eof_exit == 1) { - rewind (fin); - for (f_line = 0; f_line < c_line_begin; f_line++) - { - if (fgets (buffer, 255, fin) == NULL) - goto exit; - } + ch = press_any_key(); } - else + else // if (eof_exit == 2) { - goto exit; + iflush(); } - break; - case KEY_DOWN: - case CR: - c_line_begin++; - rewind (fin); - for (f_line = 0; f_line < c_line_begin; f_line++) + + loop = 0; + break; + } + + if (line_current >= display_line_total || output_current_row > output_end_row) + { + ctx.reach_begin = (line_current < output_current_row ? 1 : 0); + + if (line_current - (output_current_row - screen_begin_row) + screen_row_total < display_line_total) { - if (fgets (buffer, 255, fin) == NULL) - goto exit; + percentile = (line_current - (output_current_row - screen_begin_row) + screen_row_total) * 100 / display_line_total; + ctx.reach_end = 0; } - break; - case KEY_PGUP: - case Ctrl ('B'): - if (c_line_begin > 0) - c_line_begin -= (screen_lines - begin_line - 1); - else - goto exit; - if (c_line_begin < 0) - c_line_begin = 0; - rewind (fin); - for (f_line = 0; f_line < c_line_begin; f_line++) + else { - if (fgets (buffer, 255, fin) == NULL) - goto exit; + percentile = 100; + ctx.reach_end = 1; } - break; - case KEY_RIGHT: - case KEY_PGDOWN: - case Ctrl ('F'): - case KEY_SPACE: - c_line_begin += (screen_lines - begin_line - 1); - if (c_line_begin + (screen_lines - begin_line) > c_line_total) - c_line_begin = c_line_total - (screen_lines - begin_line); - rewind (fin); - for (f_line = 0; f_line < c_line_begin; f_line++) + + ctx.line_top = line_current - (output_current_row - screen_begin_row) + 1; + ctx.line_bottom = MIN(line_current - (output_current_row - screen_begin_row) + screen_row_total, display_line_total); + + snprintf(buffer, sizeof(buffer), + "\033[1;44;33m第\033[32m%ld\033[33m-\033[32m%ld\033[33m行 (\033[32m%ld%%\033[33m) %s", + ctx.line_top, + ctx.line_bottom, + percentile, + ctx.msg); + + len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1); + for (; display_len < SCREEN_COLS; display_len++) { - if (fgets (buffer, 255, fin) == NULL) - goto exit; + buffer[len++] = ' '; } - break; - case KEY_LEFT: - case 'q': - case 'Q': - goto exit; - break; - case '?': - case 'h': - case 'H': - //Display help information - strcpy (temp, app_home_dir); - strcat (temp, "data/read_help.txt"); - display_file_ex (temp, begin_line, 1); + buffer[len] = '\0'; + strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer))); + + moveto(SCREEN_ROWS, 0); + prints("%s", buffer); + iflush(); - //Refresh after display help information - rewind (fin); - for (f_line = 0; f_line < c_line_begin; f_line++) + input_ok = 0; + while (!SYS_server_exit && !input_ok) { - if (fgets (buffer, 255, fin) == NULL) - goto exit; + ch = igetch_t(MAX_DELAY_TIME); + input_ok = 1; + + // extended key handler + if (key_handler(&ch, &ctx) != 0) + { + goto cleanup; + } + + switch (ch) + { + case KEY_NULL: + case KEY_TIMEOUT: + goto cleanup; + case KEY_HOME: + if (line_current - output_current_row < 0) // Reach begin + { + break; + } + line_current = 0; + output_current_row = screen_begin_row; + output_end_row = SCREEN_ROWS - 1; + clrline(output_current_row, SCREEN_ROWS); + break; + case KEY_END: + if (display_line_total < screen_row_total) + { + break; + } + line_current = display_line_total - screen_row_total; + output_current_row = screen_begin_row; + output_end_row = SCREEN_ROWS - 1; + clrline(output_current_row, SCREEN_ROWS); + break; + case KEY_UP: + if (line_current - output_current_row < 0) // Reach begin + { + break; + } + line_current -= output_current_row; + output_current_row = screen_begin_row; + // screen_end_line = screen_begin_line; + // prints("\033[T"); // Scroll down 1 line + output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line + break; + case CR: + igetch_reset(); + case KEY_SPACE: + case KEY_DOWN: + if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= display_line_total) // Reach end + { + break; + } + line_current += (screen_row_total - (output_current_row - screen_begin_row)); + output_current_row = screen_row_total; + output_end_row = SCREEN_ROWS - 1; + moveto(SCREEN_ROWS, 0); + clrtoeol(); + // prints("\033[S"); // Scroll up 1 line + prints("\n"); // Legacy Cterm only works with this line + break; + case KEY_PGUP: + if (line_current - output_current_row < 0) // Reach begin + { + break; + } + line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row)); + if (line_current < 0) + { + line_current = 0; + } + output_current_row = screen_begin_row; + output_end_row = SCREEN_ROWS - 1; + clrline(output_current_row, SCREEN_ROWS); + break; + case KEY_PGDN: + if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= display_line_total) // Reach end + { + break; + } + line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row); + if (line_current + screen_row_total > display_line_total) // No enough lines to display + { + line_current = display_line_total - screen_row_total; + } + output_current_row = screen_begin_row; + output_end_row = SCREEN_ROWS - 1; + clrline(output_current_row, SCREEN_ROWS); + break; + case KEY_ESC: + case KEY_LEFT: + loop = 0; + break; + case 'h': + if (!show_help) // Not reentrant + { + break; + } + // Display help information + show_help = 0; + display_file(help_filename, 1); + show_help = 1; + case KEY_F5: + // Refresh after display help information + line_current -= (output_current_row - screen_begin_row); + output_current_row = screen_begin_row; + output_end_row = SCREEN_ROWS - 1; + clrline(output_current_row, SCREEN_ROWS); + break; + case 0: // Refresh bottom line + break; + default: + input_ok = 0; + break; + } + + BBS_last_access_tm = time(NULL); } - break; - default: - input_ok = 0; - break; - } + + continue; + } + + len = p_line_offsets[line_current + 1] - p_line_offsets[line_current]; + if (len >= sizeof(buffer)) + { + log_error("Buffer overflow: len=%ld(%ld - %ld) line=%ld \n", + len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current); + len = sizeof(buffer) - 1; + } + else if (len < 0) + { + log_error("Incorrect line offsets: len=%ld(%ld - %ld) line=%ld \n", + len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current); + len = 0; } - clrline (begin_line, screen_lines); - line = begin_line; - moveto (line, 0); + memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len); + buffer[len] = '\0'; - continue; - } + moveto(output_current_row, 0); + clrtoeol(); + prints("%s", buffer); + line_current++; + output_current_row++; + } - i = strlen (buffer); - if (buffer[i - 1] == '\n' && buffer[i - 2] != '\r') - { - buffer[i - 1] = '\r'; - buffer[i] = '\n'; - buffer[i + 1] = '\0'; - } - prints (buffer); - iflush (); +cleanup: + return ch; +} - line++; +static int display_file_key_handler(int *p_key, DISPLAY_CTX *p_ctx) +{ + switch (*p_key) + { + case 0: // Set msg + snprintf(p_ctx->msg, sizeof(p_ctx->msg), + "| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] | " + "移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] | " + "帮助[\033[32mh\033[33m] |"); + break; } - if (wait) - ch = press_any_key(); - else - ch = 0; - exit: - fclose (fin); + return 0; +} - return ch; - } +int display_file(const char *filename, int eof_exit) +{ + int ret; + const void *p_shm; + size_t data_len; + long line_total; + const void *p_data; + const long *p_line_offsets; - return -1; + if ((p_shm = get_file_shm_readonly(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL) + { + log_error("get_file_shm(%s) error\n", filename); + return KEY_NULL; + } + + if (user_online_update("VIEW_FILE") < 0) + { + log_error("user_online_update(VIEW_FILE) error\n"); + } + + ret = display_data(p_data, line_total, p_line_offsets, eof_exit, display_file_key_handler, DATA_READ_HELP); + + if (detach_file_shm(p_shm) < 0) + { + log_error("detach_file_shm(%s) error\n", filename); + } + + return ret; } -int -show_top () +int show_top(const char *str_left, const char *str_middle, const char *str_right) { - return 0; + char str_left_f[STR_TOP_LEFT_MAX_LEN + 1]; + char str_middle_f[STR_TOP_MIDDLE_MAX_LEN + 1]; + char str_right_f[STR_TOP_RIGHT_MAX_LEN + 1]; + int str_left_len; + int str_middle_len; + int str_right_len; + int eol; + int len; + + strncpy(str_left_f, str_left, sizeof(str_left_f) - 1); + str_left_f[sizeof(str_left_f) - 1] = '\0'; + len = split_line(str_left_f, STR_TOP_LEFT_MAX_LEN / 2, &eol, &str_left_len, 1); + str_left_f[len] = '\0'; + + strncpy(str_middle_f, str_middle, sizeof(str_middle_f) - 1); + str_middle_f[sizeof(str_middle_f) - 1] = '\0'; + len = split_line(str_middle, STR_TOP_MIDDLE_MAX_LEN / 2, &eol, &str_middle_len, 1); + str_middle_f[len] = '\0'; + + strncpy(str_right_f, str_right, sizeof(str_right_f) - 1); + str_right_f[sizeof(str_right_f) - 1] = '\0'; + len = split_line(str_right, STR_TOP_RIGHT_MAX_LEN / 2, &eol, &str_right_len, 1); + str_right_f[len] = '\0'; + + moveto(1, 0); + clrtoeol(); + prints("\033[1;44;33m%s\033[37m%*s%s\033[33m%*s%s\033[m", + str_left_f, 44 - str_left_len - str_middle_len, "", + str_middle_f, 36 - str_right_len, "", str_right_f); + + return 0; +} + +int show_bottom(const char *msg) +{ + char str_time[LINE_BUFFER_LEN]; + time_t time_online; + struct tm *tm_online; + char msg_f[LINE_BUFFER_LEN]; + int eol; + int msg_len; + int len; + int len_username; + char str_tm_online[LINE_BUFFER_LEN]; + + get_time_str(str_time, sizeof(str_time)); + + msg_f[0] = '\0'; + msg_len = 0; + if (msg != NULL) + { + strncpy(msg_f, msg, sizeof(msg_f) - 1); + msg_f[sizeof(msg_f) - 1] = '\0'; + len = split_line(msg_f, 23, &eol, &msg_len, 1); + msg_f[len] = '\0'; + } + + len_username = (int)strnlen(BBS_username, sizeof(BBS_username)); + + time_online = time(NULL) - BBS_login_tm; + tm_online = gmtime(&time_online); + if (tm_online->tm_mday > 1) + { + snprintf(str_tm_online, sizeof(str_tm_online), + "\033[36m%2d\033[33m天\033[36m%2d\033[33m时", + tm_online->tm_mday - 1, tm_online->tm_hour); + } + else + { + snprintf(str_tm_online, sizeof(str_tm_online), + "\033[36m%2d\033[33m时\033[36m%2d\033[33m分", + tm_online->tm_hour, tm_online->tm_min); + } + + moveto(SCREEN_ROWS, 0); + clrtoeol(); + prints("\033[1;44;33m时间[\033[36m%s\033[33m]%s%*s \033[33m帐号[\033[36m%s\033[33m][%s\033[33m]\033[m", + str_time, msg_f, 38 - msg_len - len_username, "", BBS_username, str_tm_online); + + return 0; } -int -show_bottom () +int show_active_board() { - return 0; + static int line_current = 0; + static const void *p_shm = NULL; + static size_t data_len; + static long line_total; + static const void *p_data; + static const long *p_line_offsets; + + static time_t t_last_show = 0; + static int line_last = 0; + + char buffer[LINE_BUFFER_LEN]; + long int len; + + if (p_shm == NULL) + { + if ((p_shm = get_file_shm_readonly(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL) + { + log_error("get_file_shm(%s) error\n", DATA_ACTIVE_BOARD); + return KEY_NULL; + } + } + + if (time(NULL) - t_last_show >= 10) + { + line_last = line_current; + t_last_show = time(NULL); + } + else + { + line_current = line_last; + } + + clrline(2, 2 + ACTIVE_BOARD_HEIGHT); + + for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++) + { + len = p_line_offsets[line_current + 1] - p_line_offsets[line_current]; + if (len >= LINE_BUFFER_LEN) + { + log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n", + len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current); + len = LINE_BUFFER_LEN - 1; + } + + memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len); + buffer[len] = '\0'; + + moveto(3 + i, 0); + prints("%s", buffer); + + line_current++; + if (line_current >= line_total) + { + line_current = 0; + break; + } + } + + return 0; }