--- lbbs/src/screen.c 2025/05/04 14:54:55 1.30 +++ lbbs/src/screen.c 2025/05/18 08:53:21 1.63 @@ -1,38 +1,39 @@ /*************************************************************************** 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. * * * ***************************************************************************/ +#include "screen.h" #include "bbs.h" #include "common.h" #include "str_process.h" #include "log.h" #include "io.h" -#include "screen.h" +#include "file_loader.h" +#include #include #include -#include -#include #include #include +#include +#include +#include +#include +#include #define ACTIVE_BOARD_HEIGHT 8 -int screen_rows = 24; -int screen_cols = 80; - void moveto(int row, int col) { if (row >= 0) @@ -47,7 +48,7 @@ void moveto(int row, int col) void clrtoeol() { - prints("\033[K"); + prints(CTRL_SEQ_CLR_LINE); } void clrline(int line_begin, int line_end) @@ -57,7 +58,7 @@ void clrline(int line_begin, int line_en for (i = line_begin; i <= line_end; i++) { moveto(i, 0); - prints("\033[K"); + prints(CTRL_SEQ_CLR_LINE); } } @@ -76,13 +77,13 @@ void clearscr() int press_any_key() { - moveto(screen_rows, 0); + 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) @@ -98,56 +99,86 @@ 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) { - int c, offset = 0, 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: @@ -163,24 +194,24 @@ 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; @@ -189,68 +220,41 @@ 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) -{ - char buffer[LINE_BUFFER_LEN]; - FILE *fin; - int i; - - if ((fin = fopen(filename, "r")) == NULL) - { - return -1; - } - - while (fgets(buffer, sizeof(buffer) - 1, fin)) - { - 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(); - } - fclose(fin); - - return 0; -} - int display_file_ex(const char *filename, int begin_line, int wait) { + static int show_help = 1; char buffer[LINE_BUFFER_LEN]; - int ch = 0; + int ch = KEY_NULL; int input_ok, line, max_lines; - long int c_line_current = 0, c_line_total = 0; - FILE *fin; - long *p_line_offsets; - int len; - int percentile; - int loop = 1; + long int line_current = 0; + const void *p_shm; + size_t data_len; + long line_total; + const void *p_data; + const long *p_line_offsets; + long int len; + long int percentile; + int loop; - if ((fin = fopen(filename, "r")) == NULL) + if ((p_shm = get_file_shm(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL) { - log_error("Unable to open file %s\n", filename); - return -1; + log_error("get_file_shm(%s) error\n", filename); + return KEY_NULL; } - 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); - - clrline(begin_line, screen_rows); + clrline(begin_line, SCREEN_ROWS); line = begin_line; - max_lines = screen_rows - 1; + max_lines = SCREEN_ROWS - 1; - while (loop) + loop = 1; + while (!SYS_server_exit && loop) { - if (c_line_current >= c_line_total && c_line_total <= screen_rows - 2) + if (line_current >= line_total && line_total <= SCREEN_ROWS - 2) { if (wait) { @@ -265,88 +269,102 @@ int display_file_ex(const char *filename break; } - if (c_line_current >= c_line_total || line >= max_lines) + if (line_current >= line_total || line >= max_lines) { - if (c_line_current - (line - 1) + (screen_rows - 2) < c_line_total) + if (line_current - (line - 1) + (SCREEN_ROWS - 2) < line_total) { - percentile = (c_line_current - (line - 1) + (screen_rows - 2)) * 100 / c_line_total; + percentile = (line_current - (line - 1) + (SCREEN_ROWS - 2)) * 100 / line_total; } else { percentile = 100; } - moveto(screen_rows, 0); - prints("\033[1;44;32m%s (%d%%)%s\033[33m │ 结束 ← │ ↑/↓/PgUp/PgDn 移动 │ ? 辅助说明 │ \033[m", + moveto(SCREEN_ROWS, 0); + 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: + line_current = 0; + line = begin_line; + max_lines = SCREEN_ROWS - 1; + clrline(begin_line, SCREEN_ROWS); + break; + case KEY_END: + line_current = 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 + if (line_current - line < 0) // Reach top { break; } - c_line_current -= line; + 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: - if (c_line_current + ((screen_rows - 2) - (line - 1)) >= c_line_total) // Reach bottom + igetch_reset(); + case KEY_DOWN: + if (line_current + ((SCREEN_ROWS - 2) - (line - 1)) >= line_total) // Reach bottom { break; } - c_line_current += ((screen_rows - 2) - (line - 1)); - line = screen_rows - 2; - max_lines = screen_rows - 1; - moveto(screen_rows, 0); + line_current += ((SCREEN_ROWS - 2) - (line - 1)); + line = SCREEN_ROWS - 2; + max_lines = SCREEN_ROWS - 1; + moveto(SCREEN_ROWS, 0); clrtoeol(); prints("\033[S"); // Scroll up 1 line break; case KEY_PGUP: case Ctrl('B'): - if (c_line_current - line < 0) // Reach top + if (line_current - line < 0) // Reach top { break; } - c_line_current -= ((screen_rows - 3) + (line - 1)); - if (c_line_current < 0) + line_current -= ((SCREEN_ROWS - 3) + (line - 1)); + if (line_current < 0) { - c_line_current = 0; + line_current = 0; } line = begin_line; - max_lines = screen_rows - 1; - clrline(begin_line, screen_rows); + max_lines = SCREEN_ROWS - 1; + clrline(begin_line, SCREEN_ROWS); break; case KEY_RIGHT: case KEY_PGDN: case Ctrl('F'): case KEY_SPACE: - if (c_line_current + (screen_rows - 2) - (line - 1) >= c_line_total) // Reach bottom + if (line_current + (SCREEN_ROWS - 2) - (line - 1) >= line_total) // Reach bottom { break; } - c_line_current += (screen_rows - 3) - (line - 1); - if (c_line_current + screen_rows - 2 > c_line_total) // No enough lines to display + line_current += (SCREEN_ROWS - 3) - (line - 1); + if (line_current + SCREEN_ROWS - 2 > line_total) // No enough lines to display { - c_line_current = c_line_total - (screen_rows - 2); + line_current = line_total - (SCREEN_ROWS - 2); } line = begin_line; - max_lines = screen_rows - 1; - clrline(begin_line, screen_rows); + max_lines = SCREEN_ROWS - 1; + clrline(begin_line, SCREEN_ROWS); break; - case KEY_NULL: - case KEY_TIMEOUT: case KEY_LEFT: case 'q': case 'Q': @@ -355,85 +373,122 @@ int display_file_ex(const char *filename case '?': case 'h': case 'H': + if (!show_help) + { + break; + } + // Display help information + 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); + line_current -= (line - 1); line = begin_line; - max_lines = screen_rows - 1; - clrline(begin_line, screen_rows); + max_lines = SCREEN_ROWS - 1; + clrline(begin_line, SCREEN_ROWS); break; default: 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]; + len = p_line_offsets[line_current + 1] - p_line_offsets[line_current]; if (len >= LINE_BUFFER_LEN) { - log_error("Error length exceeds buffer size: %d\n", 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; } - if (fgets(buffer, len + 1, fin) == NULL) - { - log_error("Reach EOF\n"); - break; - } + + memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len); + buffer[len] = '\0'; + moveto(line, 0); clrtoeol(); prints("%s", buffer); - c_line_current++; + line_current++; line++; } - free(p_line_offsets); - fclose(fin); - +cleanup: return ch; } -int show_top(char *status) +int show_top(const char *status) { - char buffer[LINE_BUFFER_LEN]; + char status_f[21]; + int truncate; + int status_len; + int section_name_len; + int len; - str_space(buffer, 20 - strlen(BBS_current_section_name)); + strncpy(status_f, status, sizeof(status_f) - 1); + status_f[sizeof(status_f) - 1] = '\0'; + + len = split_line(status_f, 20, &truncate, &status_len); + if (truncate) + { + log_error("Status string is truncated\n"); + status_f[len] = '\0'; + } + + len = split_line(BBS_current_section_name, 20, &truncate, §ion_name_len); + if (truncate) + { + log_error("Section name is truncated\n"); + } 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\033[33m 讨论区 [%s]\033[m", + status_f, 32, BBS_name, 26, "", BBS_current_section_name); iflush(); return 0; } -int show_bottom(char *msg) +int show_bottom(const char *msg) { char str_time[LINE_BUFFER_LEN]; - char buffer[LINE_BUFFER_LEN]; time_t time_online; struct tm *tm_online; + char msg_f[21]; + int truncate; + int msg_len; + int len; + int len_username; get_time_str(str_time, sizeof(str_time)); - str_space(buffer, 33 - strlen(BBS_username)); + + strncpy(msg_f, msg, sizeof(msg_f) - 1); + msg_f[sizeof(msg_f) - 1] = '\0'; + + len = split_line(msg_f, 20, &truncate, &msg_len); + if (truncate) + { + log_error("Status string is truncated\n"); + msg_f[len] = '\0'; + } + + len_username = (int)strnlen(BBS_username, sizeof(BBS_username)); time_online = time(0) - BBS_login_tm; tm_online = gmtime(&time_online); - moveto(screen_rows, 0); + 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%*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, - tm_online->tm_hour, tm_online->tm_min); + str_time, 21, msg_f, 13 - len_username, "", BBS_username, + tm_online->tm_mday - 1, tm_online->tm_hour, tm_online->tm_min); iflush(); return 0; @@ -441,47 +496,51 @@ int show_bottom(char *msg) int show_active_board() { - char filename[FILE_PATH_LEN]; - char buffer[LINE_BUFFER_LEN]; - FILE *fin; - static int line; - int len; - int end_of_line; + 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; - clrline(3, 2 + ACTIVE_BOARD_HEIGHT); - - if ((fin = fopen(DATA_ACTIVE_BOARD, "r")) == NULL) - { - log_error("Unable to open file %s\n", filename); - return -1; - } + char buffer[LINE_BUFFER_LEN]; + long int len; - for (int i = 0; i < line; i++) + if (p_shm == NULL) { - if (fgets(buffer, sizeof(buffer), fin) == NULL) + if ((p_shm = get_file_shm(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL) { - line = 0; - rewind(fin); - break; + log_error("get_file_shm(%s) error\n", DATA_ACTIVE_BOARD); + return KEY_NULL; } } + clrline(3, 2 + ACTIVE_BOARD_HEIGHT); + for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++) { - if (fgets(buffer, sizeof(buffer), fin) == NULL) + len = p_line_offsets[line_current + 1] - p_line_offsets[line_current]; + if (len >= LINE_BUFFER_LEN) { - line = 0; - break; + 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; } - line++; - len = split_line(buffer, screen_cols, &end_of_line); - buffer[len] = '\0'; // Truncate over-length line + + 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; + } } iflush(); - fclose(fin); - return 0; }