--- lbbs/src/screen.c 2025/05/03 06:24:54 1.26 +++ lbbs/src/screen.c 2025/05/11 11:33:44 1.45 @@ -1,16 +1,15 @@ /*************************************************************************** screen.c - description ------------------- - begin : Mon Oct 18 2004 - copyright : (C) 2004 by Leaflet - email : leaflet@leafok.com + 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. * * * ***************************************************************************/ @@ -23,10 +22,11 @@ #include "screen.h" #include #include -#include -#include #include #include +#include +#include +#include #define ACTIVE_BOARD_HEIGHT 8 @@ -76,15 +76,13 @@ void clearscr() int press_any_key() { - igetch(1); - moveto(screen_rows, 0); clrtoeol(); prints(" \033[1;33m按任意键继续...\033[0;37m"); iflush(); - return igetch_t(60); + return igetch_t(MIN(MAX_DELAY_TIME, 60)); } void set_input_echo(int echo) @@ -104,54 +102,78 @@ void set_input_echo(int echo) } } -static int _str_input(char *buffer, int buffer_length, int echo_mode) +static int _str_input(char *buffer, int buf_size, int echo_mode) { - char buf[256], ch; - int c, offset = 0, len, loop = 1, i, hz = 0; + int c; + int offset = 0; + int hz = 0; - for (i = 0; i < buffer_length && buffer[i] != '\0'; i++) - { - offset++; - } + buffer[buf_size - 1] = '\0'; + for (offset = 0; offset < buf_size - 1 && buffer[offset] != '\0'; offset++) + ; - igetch(1); - - while (c = igetch_t(60)) + while (!SYS_server_exit && (c = igetch_t(MIN(MAX_DELAY_TIME, 60)))) { - if (c == KEY_NULL || c == KEY_TIMEOUT || c == CR) + if (c == CR) { + igetch(1); // Cleanup remaining '\n' in the buffer break; } - if (c == LF) + else if (c == KEY_TIMEOUT || c == KEY_NULL) // timeout or broken pipe + { + return -1; + } + else if (c == LF || c == '\0') { continue; } - if (c == BACKSPACE) + else if (c == BACKSPACE) { if (offset > 0) { - buffer[--offset] = '\0'; - prints("\b \b"); - // clrtoeol (); + offset--; + if (buffer[offset] < 0 || buffer[offset] > 127) + { + prints("\033[D \033[D"); + offset--; + if (offset < 0) // should not happen + { + log_error("Offset of buffer is negative\n"); + offset = 0; + } + } + buffer[offset] = '\0'; + prints("\033[D \033[D"); iflush(); } continue; } - if (c > 255 || iscntrl(c)) + else if (c > 255 || iscntrl(c)) { continue; } - if (c > 127 && c <= 255) + else if (c > 127 && c <= 255) { + if (!hz && offset + 2 > buf_size - 1) // No enough space for Chinese character + { + igetch(1); // Cleanup remaining input + outc('\a'); + iflush(); + continue; + } hz = (!hz); } - if (offset >= buffer_length) + + if (offset + 1 > buf_size - 1) { outc('\a'); + iflush(); continue; } + buffer[offset++] = (char)c; buffer[offset] = '\0'; + switch (echo_mode) { case DOECHO: @@ -167,33 +189,35 @@ static int _str_input(char *buffer, int } } - prints("\r\n"); - iflush(); - return offset; } -int str_input(char *buffer, int buffer_length, int echo_mode) +int str_input(char *buffer, int buf_size, int echo_mode) { - int offset; + int len; - memset(buffer, '\0', buffer_length); + buffer[0] = '\0'; - offset = _str_input(buffer, buffer_length, echo_mode); + len = _str_input(buffer, buf_size, echo_mode); - return offset; + prints("\r\n"); + iflush(); + + return len; }; -int get_data(int row, int col, char *prompt, char *buffer, int buffer_length, int echo_mode) +int get_data(int row, int col, char *prompt, char *buffer, int buf_size, int echo_mode) { int len; + igetch(1); // Cleanup input buffer + moveto(row, col); prints(prompt); prints(buffer); iflush(); - len = _str_input(buffer, buffer_length, echo_mode); + len = _str_input(buffer, buf_size, echo_mode); return len; } @@ -202,7 +226,7 @@ int display_file(const char *filename) { char buffer[LINE_BUFFER_LEN]; FILE *fin; - int i; + size_t i; if ((fin = fopen(filename, "r")) == NULL) { @@ -228,16 +252,17 @@ int display_file(const char *filename) int display_file_ex(const char *filename, int begin_line, int wait) { + static int show_help = 1; char buffer[LINE_BUFFER_LEN]; - char temp[LINE_BUFFER_LEN]; int ch = 0; int input_ok, line, max_lines; - long int c_line_current = 0, c_line_total = 0; + long int c_line_current = 0; + long int c_line_total = 0; FILE *fin; - struct stat f_stat; long *p_line_offsets; - int len; - int percentile; + long int len; + long int percentile; + int loop = 1; if ((fin = fopen(filename, "r")) == NULL) { @@ -253,24 +278,49 @@ int display_file_ex(const char *filename line = begin_line; max_lines = screen_rows - 1; - while (c_line_current < c_line_total) + while (!SYS_server_exit && loop) { - if (line >= max_lines) + if (c_line_current >= c_line_total && c_line_total <= screen_rows - 2) { - percentile = (c_line_current - (line - 1) + (screen_rows - 2)) * 100 / c_line_total; + if (wait) + { + ch = press_any_key(); + } + else + { + iflush(); + } + + loop = 0; + break; + } + + if (c_line_current >= c_line_total || line >= max_lines) + { + if (c_line_current - (line - 1) + (screen_rows - 2) < c_line_total) + { + percentile = (c_line_current - (line - 1) + (screen_rows - 2)) * 100 / c_line_total; + } + else + { + percentile = 100; + } moveto(screen_rows, 0); - prints("\033[1;44;32m下面还有喔 (%d%%)\033[33m │ 结束 ← │ ↑/↓/PgUp/PgDn 移动 │ ? 辅助说明 │ \033[m", - percentile); + prints("\033[1;44;32m%s (%d%%)%s\033[33m │ 结束 ← │ ↑/↓/PgUp/PgDn 移动 │ ? 辅助说明 │ \033[m", + (percentile < 100 ? "下面还有喔" : "没有更多了"), percentile, + (percentile < 10 ? " " : (percentile < 100 ? " " : ""))); iflush(); input_ok = 0; - while (!input_ok) + while (!SYS_server_exit && !input_ok) { ch = igetch_t(MAX_DELAY_TIME); input_ok = 1; switch (ch) { + case KEY_TIMEOUT: + goto cleanup; case KEY_UP: if (c_line_current - line < 0) // Reach top { @@ -278,8 +328,9 @@ int display_file_ex(const char *filename } c_line_current -= line; line = begin_line; - max_lines = begin_line + 1; - prints("\033[1T"); // Scroll down 1 line + // max_lines = begin_line + 1; + // prints("\033[T"); // Scroll down 1 line + max_lines = screen_rows - 1; // Legacy Fterm only works with this line break; case KEY_DOWN: case CR: @@ -292,7 +343,7 @@ int display_file_ex(const char *filename max_lines = screen_rows - 1; moveto(screen_rows, 0); clrtoeol(); - prints("\033[1S"); // Scroll up 1 line + prints("\033[S"); // Scroll up 1 line break; case KEY_PGUP: case Ctrl('B'): @@ -326,21 +377,23 @@ int display_file_ex(const char *filename max_lines = screen_rows - 1; clrline(begin_line, screen_rows); break; - case KEY_NULL: - case KEY_TIMEOUT: case KEY_LEFT: case 'q': case 'Q': - c_line_current = c_line_total; - wait = 0; + loop = 0; break; case '?': case 'h': case 'H': + if (!show_help) + { + break; + } + // Display help information - strcpy(temp, app_home_dir); - strcat(temp, "data/read_help.txt"); - display_file_ex(temp, begin_line, 1); + show_help = 0; + display_file_ex(DATA_READ_HELP, begin_line, 1); + show_help = 1; // Refresh after display help information c_line_current -= (line - 1); @@ -352,6 +405,8 @@ int display_file_ex(const char *filename input_ok = 0; break; } + + BBS_last_access_tm = time(0); } continue; @@ -364,7 +419,7 @@ int display_file_ex(const char *filename log_error("Error length exceeds buffer size: %d\n", len); len = LINE_BUFFER_LEN - 1; } - if (fgets(buffer, len + 1, fin) == NULL) + if (fgets(buffer, (int)len + 1, fin) == NULL) { log_error("Reach EOF\n"); break; @@ -376,13 +431,7 @@ int display_file_ex(const char *filename line++; } - iflush(); - - if (wait) - { - ch = press_any_key(); - } - +cleanup: free(p_line_offsets); fclose(fin); @@ -391,15 +440,31 @@ int display_file_ex(const char *filename int show_top(char *status) { - char buffer[LINE_BUFFER_LEN]; + int end_of_line; + int display_len; + unsigned int len; - str_space(buffer, 20 - strlen(BBS_current_section_name)); + char space1[LINE_BUFFER_LEN]; + char space2[LINE_BUFFER_LEN]; + + len = split_line(status, 20, &end_of_line, &display_len); + if (end_of_line) + { + status[len] = '\0'; + } + str_space(space1, 31 - display_len); + + len = split_line(BBS_current_section_name, 20, &end_of_line, &display_len); + if (end_of_line) + { + status[len] = '\0'; + } + str_space(space2, 30 - display_len); moveto(1, 0); clrtoeol(); - prints("\033[1;44;33m%-20s \033[37m%20s" - " %s\033[33m讨论区 [%s]\033[m", - status, BBS_name, buffer, BBS_current_section_name); + prints("\033[1;44;33m%s \033[37m%s%s%s\033[33m 讨论区 [%s]\033[m", + status, space1, BBS_name, space2, BBS_current_section_name); iflush(); return 0; @@ -408,23 +473,21 @@ int show_top(char *status) int show_bottom(char *msg) { char str_time[LINE_BUFFER_LEN]; - char str_time_onine[20]; - char buffer[LINE_BUFFER_LEN]; + char space[LINE_BUFFER_LEN]; time_t time_online; struct tm *tm_online; get_time_str(str_time, sizeof(str_time)); - str_space(buffer, 33 - strlen(BBS_username)); + str_space(space, 34 - (int)strnlen(BBS_username, sizeof(BBS_username))); time_online = time(0) - BBS_login_tm; tm_online = gmtime(&time_online); moveto(screen_rows, 0); clrtoeol(); - prints("\033[1;44;33m[\033[36m%s\033[33m]" - "%s帐号[\033[36m%s\033[33m]" + prints("\033[1;44;33m[\033[36m%s\033[33m]%s帐号[\033[36m%s\033[33m]" "[\033[36m%1d\033[33m:\033[36m%2d\033[33m:\033[36m%2d\033[33m]\033[m", - str_time, buffer, BBS_username, tm_online->tm_mday - 1, + str_time, space, BBS_username, tm_online->tm_mday - 1, tm_online->tm_hour, tm_online->tm_min); iflush(); @@ -437,14 +500,13 @@ int show_active_board() char buffer[LINE_BUFFER_LEN]; FILE *fin; static int line; - int len; + unsigned int len; int end_of_line; - - sprintf(filename, "%sdata/active_board.txt", app_home_dir); + int display_len; clrline(3, 2 + ACTIVE_BOARD_HEIGHT); - if ((fin = fopen(filename, "r")) == NULL) + if ((fin = fopen(DATA_ACTIVE_BOARD, "r")) == NULL) { log_error("Unable to open file %s\n", filename); return -1; @@ -468,7 +530,7 @@ int show_active_board() break; } line++; - len = split_line(buffer, screen_cols, &end_of_line); + len = split_line(buffer, screen_cols, &end_of_line, &display_len); buffer[len] = '\0'; // Truncate over-length line moveto(3 + i, 0); prints("%s", buffer);