--- lbbs/src/screen.c 2025/05/03 13:41:21 1.28 +++ lbbs/src/screen.c 2025/05/15 14:17:53 1.52 @@ -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. * * * ***************************************************************************/ @@ -21,12 +20,16 @@ #include "log.h" #include "io.h" #include "screen.h" +#include #include #include -#include -#include #include #include +#include +#include +#include +#include +#include #define ACTIVE_BOARD_HEIGHT 8 @@ -82,7 +85,7 @@ int press_any_key() 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) @@ -98,57 +101,86 @@ void set_input_echo(int echo) prints("\xff\xfb\x01\xff\xfb\x03"); iflush(); igetch(0); - igetch(1); + igetch_reset(); } } -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++) + ; - while (c = igetch_t(60)) + igetch_reset(); + + while (!SYS_server_exit) { - if (c == KEY_NULL || c == KEY_TIMEOUT || c == CR) + c = igetch_t(MIN(MAX_DELAY_TIME, 60)); + + if (c == CR) { - igetch(1); // Cleanup remaining '\n' in the buffer + igetch_reset(); 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(0); // Ignore 1 character + 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: @@ -164,24 +196,24 @@ 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; @@ -190,70 +222,63 @@ int get_data(int row, int col, char *pro prints(buffer); iflush(); - len = _str_input(buffer, buffer_length, echo_mode); + len = _str_input(buffer, buf_size, echo_mode); return len; } -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]; - FILE *fin; - int i; + void *p_data; + int ch = 0; + int input_ok, line, max_lines; + long int c_line_current = 0; + long int c_line_total = 0; + int fd; + struct stat sb; + long *p_line_offsets; + long int len; + long int percentile; + int loop = 1; - if ((fin = fopen(filename, "r")) == NULL) + if ((fd = open(filename, O_RDONLY)) < 0) { + log_error("open(%s) error (%d)\n", filename, errno); return -1; } - while (fgets(buffer, sizeof(buffer) - 1, fin)) + if (fstat(fd, &sb) < 0) { - i = strnlen(buffer, sizeof(buffer) - 1); - if (buffer[i - 1] == '\n' && buffer[i - 2] != '\r') - { - buffer[i - 1] = '\r'; - buffer[i] = '\n'; - buffer[i + 1] = '\0'; - } - prints(buffer); - iflush(); + log_error("fstat(fd) error (%d)\n", errno); + return -1; } - fclose(fin); - return 0; -} - -int display_file_ex(const char *filename, int begin_line, int wait) -{ - 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; - FILE *fin; - struct stat f_stat; - long *p_line_offsets; - int len; - int percentile; - int loop = 1; + p_data = mmap(NULL, (size_t)sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0L); + if (p_data == MAP_FAILED) + { + log_error("mmap() error (%d)\n", errno); + return -2; + } - if ((fin = fopen(filename, "r")) == NULL) + if (close(fd) < 0) { - log_error("Unable to open file %s\n", filename); + log_error("close(fd) error (%d)\n", errno); return -1; } p_line_offsets = (long *)malloc(sizeof(long) * MAX_FILE_LINES); - c_line_total = split_file_lines(fin, screen_cols, p_line_offsets, MAX_FILE_LINES); + c_line_total = split_data_lines(p_data, screen_cols, p_line_offsets, MAX_FILE_LINES); clrline(begin_line, screen_rows); line = begin_line; max_lines = screen_rows - 1; - while (loop) + while (!SYS_server_exit && loop) { - if (c_line_current >= c_line_total) + if (c_line_current >= c_line_total && c_line_total <= screen_rows - 2) { if (wait) { @@ -268,7 +293,7 @@ int display_file_ex(const char *filename break; } - if (line >= max_lines) + if (c_line_current >= c_line_total || line >= max_lines) { if (c_line_current - (line - 1) + (screen_rows - 2) < c_line_total) { @@ -276,22 +301,37 @@ int display_file_ex(const char *filename } else { - log_error("P100 reached\n"); 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_NULL: + case KEY_TIMEOUT: + goto cleanup; + case KEY_HOME: + c_line_current = 0; + line = begin_line; + max_lines = screen_rows - 1; + clrline(begin_line, screen_rows); + break; + case KEY_END: + c_line_current = c_line_total - (screen_rows - 2); + line = begin_line; + max_lines = screen_rows - 1; + clrline(begin_line, screen_rows); + break; case KEY_UP: if (c_line_current - line < 0) // Reach top { @@ -299,12 +339,13 @@ int display_file_ex(const char *filename } c_line_current -= line; line = begin_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 + // 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: + igetch_reset(); + case KEY_DOWN: if (c_line_current + ((screen_rows - 2) - (line - 1)) >= c_line_total) // Reach bottom { break; @@ -348,8 +389,6 @@ 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': @@ -358,10 +397,15 @@ int display_file_ex(const char *filename 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); @@ -370,26 +414,27 @@ int display_file_ex(const char *filename clrline(begin_line, screen_rows); break; default: + log_std("Input: %d\n", ch); input_ok = 0; break; } + + BBS_last_access_tm = time(0); } continue; } - fseek(fin, p_line_offsets[c_line_current], SEEK_SET); len = p_line_offsets[c_line_current + 1] - p_line_offsets[c_line_current]; if (len >= LINE_BUFFER_LEN) { log_error("Error length exceeds buffer size: %d\n", len); len = LINE_BUFFER_LEN - 1; } - if (fgets(buffer, len + 1, fin) == NULL) - { - log_error("Reach EOF\n"); - break; - } + + memcpy(buffer, (const char *)p_data + p_line_offsets[c_line_current], (size_t)len); + buffer[len] = '\0'; + moveto(line, 0); clrtoeol(); prints("%s", buffer); @@ -397,23 +442,44 @@ int display_file_ex(const char *filename line++; } +cleanup: + if (munmap(p_data, (size_t)sb.st_size) < 0) + { + log_error("munmap() error (%d)\n", errno); + } + free(p_line_offsets); - fclose(fin); return ch; } int show_top(char *status) { - char buffer[LINE_BUFFER_LEN]; + int end_of_line; + int display_len; + 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; @@ -422,23 +488,21 @@ 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(); @@ -453,12 +517,11 @@ int show_active_board() static int line; 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; @@ -482,7 +545,7 @@ 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);