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/* SPDX-License-Identifier: GPL-3.0-or-later */
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/*
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* editor
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* - user interactive full-screen text editor
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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 "io.h"
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#include "log.h"
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#include "login.h"
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#include "memory_pool.h"
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#include "str_process.h"
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#include <stdlib.h>
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#include <string.h>
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#include <sys/param.h>
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enum _editor_constant_t
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{
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EDITOR_MEM_POOL_LINE_PER_CHUNK = 1000,
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EDITOR_MEM_POOL_CHUNK_LIMIT = (MAX_EDITOR_DATA_LINES / EDITOR_MEM_POOL_LINE_PER_CHUNK + 1),
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};
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static const char EDITOR_ESC_DISPLAY_STR[] = "\033[32m*\033[m";
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static MEMORY_POOL *p_mp_data_line;
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static MEMORY_POOL *p_mp_editor_data;
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int editor_memory_pool_init(void)
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{
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if (p_mp_data_line != NULL || p_mp_editor_data != NULL)
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{
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log_error("Editor mem pool already initialized\n");
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return -1;
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}
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p_mp_data_line = memory_pool_init(MAX_EDITOR_DATA_LINE_LENGTH, EDITOR_MEM_POOL_LINE_PER_CHUNK, EDITOR_MEM_POOL_CHUNK_LIMIT);
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if (p_mp_data_line == NULL)
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{
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log_error("Memory pool init error\n");
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return -2;
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}
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p_mp_editor_data = memory_pool_init(sizeof(EDITOR_DATA), 1, 1);
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if (p_mp_editor_data == NULL)
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{
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log_error("Memory pool init error\n");
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return -3;
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}
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return 0;
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}
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void editor_memory_pool_cleanup(void)
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{
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if (p_mp_data_line != NULL)
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{
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memory_pool_cleanup(p_mp_data_line);
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p_mp_data_line = NULL;
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}
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if (p_mp_editor_data != NULL)
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{
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memory_pool_cleanup(p_mp_editor_data);
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p_mp_editor_data = NULL;
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}
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}
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EDITOR_DATA *editor_data_load(const char *p_data)
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{
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EDITOR_DATA *p_editor_data;
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char *p_data_line = NULL;
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long line_offsets[MAX_EDITOR_DATA_LINES + 1];
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long current_data_line_length = 0;
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long i;
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if (p_data == NULL)
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{
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log_error("NULL pointer error\n");
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return NULL;
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}
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p_editor_data = memory_pool_alloc(p_mp_editor_data);
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if (p_editor_data == NULL)
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{
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log_error("memory_pool_alloc() error\n");
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return NULL;
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}
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p_editor_data->display_line_total = split_data_lines(p_data, SCREEN_COLS, line_offsets, MAX_EDITOR_DATA_LINES + 1,
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0, p_editor_data->display_line_widths);
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for (i = 0; i < p_editor_data->display_line_total; i++)
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{
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p_editor_data->display_line_lengths[i] = line_offsets[i + 1] - line_offsets[i];
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if (i == 0 ||
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current_data_line_length + p_editor_data->display_line_lengths[i] + 1 > MAX_EDITOR_DATA_LINE_LENGTH ||
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(p_editor_data->display_line_lengths[i - 1] > 0 && p_data[line_offsets[i - 1] + p_editor_data->display_line_lengths[i - 1] - 1] == '\n'))
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{
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// Allocate new data line
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p_data_line = memory_pool_alloc(p_mp_data_line);
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if (p_data_line == NULL)
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{
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log_error("memory_pool_alloc() error: i = %d\n", i);
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// Cleanup
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editor_data_cleanup(p_editor_data);
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return NULL;
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}
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p_editor_data->p_display_lines[i] = p_data_line;
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current_data_line_length = 0;
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}
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else
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{
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p_editor_data->p_display_lines[i] = p_editor_data->p_display_lines[i - 1] + p_editor_data->display_line_lengths[i - 1];
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}
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memcpy(p_editor_data->p_display_lines[i], p_data + line_offsets[i], (size_t)p_editor_data->display_line_lengths[i]);
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current_data_line_length += p_editor_data->display_line_lengths[i];
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// Trim \n from last line
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if (i + 1 == p_editor_data->display_line_total &&
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p_editor_data->display_line_lengths[i] > 0 &&
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p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n')
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{
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p_editor_data->display_line_lengths[i]--;
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p_editor_data->display_line_widths[i]--;
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current_data_line_length--;
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}
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p_data_line[current_data_line_length] = '\0';
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}
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memset(p_editor_data->p_display_lines + p_editor_data->display_line_total, 0, MAX_EDITOR_DATA_LINES - (size_t)p_editor_data->display_line_total);
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return p_editor_data;
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}
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long editor_data_save(const EDITOR_DATA *p_editor_data, char *p_data, size_t buf_len)
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{
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long current_pos = 0;
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long i;
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if (p_editor_data == NULL || p_data == NULL)
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{
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log_error("NULL pointer error\n");
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return -1;
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}
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for (i = 0; i < p_editor_data->display_line_total; i++)
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{
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if (current_pos + p_editor_data->display_line_lengths[i] + 1 > buf_len)
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{
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log_error("Data buffer not longer enough %d > %d\n", current_pos + p_editor_data->display_line_lengths[i] + 1, buf_len);
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p_data[current_pos] = '\0';
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return -2;
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}
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memcpy(p_data + current_pos, p_editor_data->p_display_lines[i], (size_t)p_editor_data->display_line_lengths[i]);
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current_pos += p_editor_data->display_line_lengths[i];
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}
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p_data[current_pos] = '\0';
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return current_pos;
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}
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void editor_data_cleanup(EDITOR_DATA *p_editor_data)
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{
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char *p_data_line = NULL;
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long i;
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if (p_editor_data == NULL)
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{
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return;
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}
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for (i = 0; i < p_editor_data->display_line_total; i++)
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{
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if (p_data_line == NULL)
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{
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p_data_line = p_editor_data->p_display_lines[i];
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}
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if (p_editor_data->display_line_lengths[i] > 0 &&
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p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n')
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{
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memory_pool_free(p_mp_data_line, p_data_line);
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p_data_line = NULL;
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}
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}
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if (p_data_line != NULL)
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{
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memory_pool_free(p_mp_data_line, p_data_line);
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}
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memory_pool_free(p_mp_editor_data, p_editor_data);
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}
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int editor_data_insert(EDITOR_DATA *p_editor_data, long *p_display_line, long *p_offset,
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const char *str, int str_len, long *p_last_updated_line)
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{
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long display_line = *p_display_line;
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long offset = *p_offset;
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char *p_data_line = NULL;
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long len_data_line;
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long offset_data_line;
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long last_display_line; // of data line
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long line_offsets[MAX_EDITOR_DATA_LINE_LENGTH + 1];
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int line_widths[MAX_EDITOR_DATA_LINE_LENGTH + 1];
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long split_line_total;
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long i;
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int len;
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int eol;
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int display_len;
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if (p_editor_data == NULL || p_last_updated_line == NULL)
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{
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log_error("NULL pointer error\n");
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return -1;
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}
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// Get length of current data line
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len_data_line = 0;
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p_data_line = p_editor_data->p_display_lines[display_line];
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for (i = display_line - 1; i >= 0; i--)
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{
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if (p_editor_data->display_line_lengths[i] > 0 &&
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p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of prior data line
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{
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break;
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}
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len_data_line += p_editor_data->display_line_lengths[i];
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p_data_line = p_editor_data->p_display_lines[i];
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}
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offset_data_line = len_data_line + offset;
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last_display_line = p_editor_data->display_line_total - 1;
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for (i = display_line; i < p_editor_data->display_line_total; i++)
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{
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len_data_line += p_editor_data->display_line_lengths[i];
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if (p_editor_data->display_line_lengths[i] > 0 &&
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p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
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{
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last_display_line = i;
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break;
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}
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}
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// Split current data line if over-length
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if (len_data_line + str_len + 2 > MAX_EDITOR_DATA_LINE_LENGTH || str[0] == CR)
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{
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if (p_editor_data->display_line_total >= MAX_EDITOR_DATA_LINES)
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{
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#ifdef _DEBUG
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log_error("Split line error, display_line_total(%ld) reach limit(%d)\n",
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p_editor_data->display_line_total, MAX_EDITOR_DATA_LINES);
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#endif
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return -2;
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}
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// Allocate new data line
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p_data_line = memory_pool_alloc(p_mp_data_line);
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if (p_data_line == NULL)
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{
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log_error("memory_pool_alloc() error\n");
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return -2;
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}
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if (offset_data_line + str_len + 2 >= MAX_EDITOR_DATA_LINE_LENGTH || str[0] == CR)
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{
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if (str[0] == CR)
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{
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str_len = 0;
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}
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// Copy str to new data line
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memcpy(p_data_line, str, (size_t)str_len);
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// Copy rest part of current data line to new data line
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memcpy(p_data_line + str_len,
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p_editor_data->p_display_lines[display_line] + offset,
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(size_t)(len_data_line - offset_data_line));
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p_data_line[str_len + len_data_line - offset_data_line] = '\0';
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// Add line ending to current display line (data line)
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p_editor_data->p_display_lines[display_line][offset] = '\n';
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p_editor_data->p_display_lines[display_line][offset + 1] = '\0';
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p_editor_data->display_line_lengths[display_line] = offset + 1;
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*p_display_line = display_line + 1;
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*p_offset = str_len;
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}
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else
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{
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// Copy rest part of current data line to new data line
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memcpy(p_data_line,
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p_editor_data->p_display_lines[display_line] + offset,
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(size_t)(len_data_line - offset_data_line));
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p_data_line[len_data_line - offset_data_line] = '\0';
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// Append str to current display line
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memcpy(p_editor_data->p_display_lines[display_line] + offset, str, (size_t)str_len);
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// Add line ending to current display line (data line)
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p_editor_data->p_display_lines[display_line][offset + str_len] = '\n';
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p_editor_data->p_display_lines[display_line][offset + str_len + 1] = '\0';
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p_editor_data->display_line_lengths[display_line] = offset + str_len + 1;
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*p_display_line = display_line;
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*p_offset = offset + str_len;
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}
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// Update display width of current display line
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len = split_line(p_editor_data->p_display_lines[display_line], SCREEN_COLS, &eol, &display_len, 0);
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p_editor_data->display_line_widths[display_line] = display_len;
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split_line_total = last_display_line - display_line + 3;
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// Set start display_line for spliting new data line
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display_line++;
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*p_last_updated_line = p_editor_data->display_line_total;
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}
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else // insert str into current data line at offset_data_line
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{
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memmove(p_data_line + offset_data_line + str_len, p_data_line + offset_data_line, (size_t)(len_data_line - offset_data_line));
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memcpy(p_data_line + offset_data_line, str, (size_t)str_len);
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p_data_line[len_data_line + str_len] = '\0';
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// Set p_data_line to head of current display line
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p_data_line = p_editor_data->p_display_lines[display_line];
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split_line_total = last_display_line - display_line + 3;
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*p_display_line = display_line;
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*p_offset = offset + str_len;
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}
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// Split current data line since beginning of current display line
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split_line_total = split_data_lines(p_data_line, SCREEN_COLS, line_offsets, split_line_total, 0, line_widths);
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for (i = 0; i < split_line_total; i++)
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{
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if (display_line + i > last_display_line)
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{
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// Insert blank display line after last_display_line
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if (p_editor_data->display_line_total >= MAX_EDITOR_DATA_LINES)
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{
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#ifdef _DEBUG
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log_error("display_line_total over limit %d >= %d\n", p_editor_data->display_line_total, MAX_EDITOR_DATA_LINES);
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#endif
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// Terminate prior display line with \n, to avoid error on cleanup
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if (display_line + i - 1 >= 0 && p_editor_data->display_line_lengths[display_line + i - 1] > 0)
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{
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len = split_line(p_editor_data->p_display_lines[display_line + i - 1], SCREEN_COLS - 1, &eol, &display_len, 0);
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p_editor_data->p_display_lines[display_line + i - 1][len] = '\n';
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p_editor_data->p_display_lines[display_line + i - 1][len + 1] = '\0';
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p_editor_data->display_line_lengths[display_line + i - 1] = len + 1;
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p_editor_data->display_line_widths[display_line + i - 1] = display_len;
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}
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if (*p_offset >= p_editor_data->display_line_lengths[*p_display_line])
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{
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*p_offset = p_editor_data->display_line_lengths[*p_display_line] - 1;
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}
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break;
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}
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| 376 |
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// for (j = p_editor_data->display_line_total; j > last_display_line + 1; j--)
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// {
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// p_editor_data->p_display_lines[j] = p_editor_data->p_display_lines[j - 1];
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// p_editor_data->display_line_lengths[j] = p_editor_data->display_line_lengths[j - 1];
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// p_editor_data->display_line_widths[j] = p_editor_data->display_line_widths[j - 1];
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// }
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memmove(p_editor_data->p_display_lines + last_display_line + 2,
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p_editor_data->p_display_lines + last_display_line + 1,
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| 385 |
(size_t)(p_editor_data->display_line_total - last_display_line - 1) *
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| 386 |
sizeof(p_editor_data->p_display_lines[last_display_line + 1]));
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memmove(p_editor_data->display_line_lengths + last_display_line + 2,
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p_editor_data->display_line_lengths + last_display_line + 1,
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| 389 |
(size_t)(p_editor_data->display_line_total - last_display_line - 1) *
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| 390 |
sizeof(p_editor_data->display_line_lengths[last_display_line + 1]));
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memmove(p_editor_data->display_line_widths + last_display_line + 2,
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p_editor_data->display_line_widths + last_display_line + 1,
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| 393 |
(size_t)(p_editor_data->display_line_total - last_display_line - 1) *
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| 394 |
sizeof(p_editor_data->display_line_widths[last_display_line + 1]));
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| 395 |
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last_display_line++;
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*p_last_updated_line = p_editor_data->display_line_total;
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(p_editor_data->display_line_total)++;
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}
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| 401 |
p_editor_data->display_line_lengths[display_line + i] = line_offsets[i + 1] - line_offsets[i];
|
| 402 |
p_editor_data->display_line_widths[display_line + i] = line_widths[i];
|
| 403 |
p_editor_data->p_display_lines[display_line + i] =
|
| 404 |
(i == 0
|
| 405 |
? p_data_line
|
| 406 |
: (p_editor_data->p_display_lines[display_line + i - 1] + p_editor_data->display_line_lengths[display_line + i - 1]));
|
| 407 |
|
| 408 |
if (p_editor_data->display_line_lengths[display_line + i] > 0 &&
|
| 409 |
p_editor_data->p_display_lines[display_line + i][p_editor_data->display_line_lengths[display_line + i] - 1] == '\n')
|
| 410 |
{
|
| 411 |
break;
|
| 412 |
}
|
| 413 |
}
|
| 414 |
|
| 415 |
*p_last_updated_line = MAX(display_line + MIN(i, split_line_total - 1), *p_last_updated_line);
|
| 416 |
|
| 417 |
if (*p_offset >= p_editor_data->display_line_lengths[*p_display_line])
|
| 418 |
{
|
| 419 |
if (*p_display_line + 1 < p_editor_data->display_line_total)
|
| 420 |
{
|
| 421 |
*p_offset -= p_editor_data->display_line_lengths[*p_display_line];
|
| 422 |
(*p_display_line)++;
|
| 423 |
}
|
| 424 |
}
|
| 425 |
|
| 426 |
// Prevent the last display line from being over-length
|
| 427 |
if (p_editor_data->display_line_total == MAX_EDITOR_DATA_LINES)
|
| 428 |
{
|
| 429 |
len = split_line(p_editor_data->p_display_lines[p_editor_data->display_line_total - 1], SCREEN_COLS - 1, &eol, &display_len, 0);
|
| 430 |
p_editor_data->p_display_lines[p_editor_data->display_line_total - 1][len] = '\0';
|
| 431 |
p_editor_data->display_line_lengths[p_editor_data->display_line_total - 1] = len;
|
| 432 |
p_editor_data->display_line_widths[p_editor_data->display_line_total - 1] = display_len;
|
| 433 |
if (*p_display_line + 1 >= p_editor_data->display_line_total)
|
| 434 |
{
|
| 435 |
*p_offset = MIN(*p_offset, len);
|
| 436 |
*p_display_line = p_editor_data->display_line_total - 1;
|
| 437 |
}
|
| 438 |
}
|
| 439 |
|
| 440 |
return 0;
|
| 441 |
}
|
| 442 |
|
| 443 |
int editor_data_delete(EDITOR_DATA *p_editor_data, long *p_display_line, long *p_offset,
|
| 444 |
long *p_last_updated_line, int del_line)
|
| 445 |
{
|
| 446 |
long display_line = *p_display_line;
|
| 447 |
long offset = *p_offset;
|
| 448 |
char *p_data_line = NULL;
|
| 449 |
long len_data_line;
|
| 450 |
long offset_data_line;
|
| 451 |
long last_display_line; // of data line
|
| 452 |
long line_offsets[MAX_EDITOR_DATA_LINE_LENGTH + 1];
|
| 453 |
int line_widths[MAX_EDITOR_DATA_LINE_LENGTH + 1];
|
| 454 |
long split_line_total;
|
| 455 |
long i, j;
|
| 456 |
int str_len = 0;
|
| 457 |
char c;
|
| 458 |
|
| 459 |
if (p_editor_data == NULL || p_last_updated_line == NULL)
|
| 460 |
{
|
| 461 |
log_error("NULL pointer error\n");
|
| 462 |
return -1;
|
| 463 |
}
|
| 464 |
|
| 465 |
// Get length of current data line
|
| 466 |
len_data_line = 0;
|
| 467 |
p_data_line = p_editor_data->p_display_lines[display_line];
|
| 468 |
for (i = display_line - 1; i >= 0; i--)
|
| 469 |
{
|
| 470 |
if (p_editor_data->display_line_lengths[i] > 0 &&
|
| 471 |
p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of prior data line
|
| 472 |
{
|
| 473 |
break;
|
| 474 |
}
|
| 475 |
|
| 476 |
len_data_line += p_editor_data->display_line_lengths[i];
|
| 477 |
p_data_line = p_editor_data->p_display_lines[i];
|
| 478 |
}
|
| 479 |
offset_data_line = len_data_line + offset;
|
| 480 |
last_display_line = p_editor_data->display_line_total - 1;
|
| 481 |
for (i = display_line; i < p_editor_data->display_line_total; i++)
|
| 482 |
{
|
| 483 |
len_data_line += p_editor_data->display_line_lengths[i];
|
| 484 |
|
| 485 |
if (p_editor_data->display_line_lengths[i] > 0 &&
|
| 486 |
p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
|
| 487 |
{
|
| 488 |
last_display_line = i;
|
| 489 |
break;
|
| 490 |
}
|
| 491 |
}
|
| 492 |
|
| 493 |
if (offset_data_line >= len_data_line) // end-of-line
|
| 494 |
{
|
| 495 |
return 0;
|
| 496 |
}
|
| 497 |
|
| 498 |
// Check str to be deleted
|
| 499 |
if (del_line)
|
| 500 |
{
|
| 501 |
str_len = (int)(p_editor_data->display_line_lengths[display_line] - offset);
|
| 502 |
}
|
| 503 |
else if (p_data_line[offset_data_line] > 0 && p_data_line[offset_data_line] < 127)
|
| 504 |
{
|
| 505 |
str_len = 1;
|
| 506 |
}
|
| 507 |
else if (p_data_line[offset_data_line] & 0x80) // head of multi-byte character
|
| 508 |
{
|
| 509 |
str_len = 1;
|
| 510 |
c = (p_data_line[offset_data_line] & 0x70) << 1;
|
| 511 |
while (c & 0x80)
|
| 512 |
{
|
| 513 |
str_len++;
|
| 514 |
c = (c & 0x7f) << 1;
|
| 515 |
}
|
| 516 |
}
|
| 517 |
else
|
| 518 |
{
|
| 519 |
log_error("Some strange character at display_line %ld, offset %ld: %d %d\n",
|
| 520 |
display_line, offset, p_data_line[offset_data_line], p_data_line[offset_data_line + 1]);
|
| 521 |
str_len = 1;
|
| 522 |
}
|
| 523 |
|
| 524 |
// Current display line is (almost) empty
|
| 525 |
if (offset_data_line + str_len > len_data_line ||
|
| 526 |
(offset_data_line + str_len == len_data_line &&
|
| 527 |
p_data_line[del_line ? len_data_line - 1 : offset_data_line] == '\n'))
|
| 528 |
{
|
| 529 |
if (display_line + 1 >= p_editor_data->display_line_total) // No additional display line (data line)
|
| 530 |
{
|
| 531 |
return 0;
|
| 532 |
}
|
| 533 |
|
| 534 |
len_data_line = 0; // Next data line
|
| 535 |
last_display_line = p_editor_data->display_line_total - 1;
|
| 536 |
for (i = display_line + 1; i < p_editor_data->display_line_total; i++)
|
| 537 |
{
|
| 538 |
len_data_line += p_editor_data->display_line_lengths[i];
|
| 539 |
|
| 540 |
if (p_editor_data->display_line_lengths[i] > 0 &&
|
| 541 |
p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
|
| 542 |
{
|
| 543 |
last_display_line = i;
|
| 544 |
break;
|
| 545 |
}
|
| 546 |
}
|
| 547 |
|
| 548 |
if (offset_data_line + len_data_line + 1 > MAX_EDITOR_DATA_LINE_LENGTH) // No enough buffer to merge current data line with next data line
|
| 549 |
{
|
| 550 |
return 0;
|
| 551 |
}
|
| 552 |
|
| 553 |
// Append next data line to current one
|
| 554 |
memcpy(p_data_line + offset_data_line, p_editor_data->p_display_lines[display_line + 1], (size_t)len_data_line);
|
| 555 |
p_data_line[offset_data_line + len_data_line] = '\0';
|
| 556 |
|
| 557 |
// Recycle next data line
|
| 558 |
memory_pool_free(p_mp_data_line, p_editor_data->p_display_lines[display_line + 1]);
|
| 559 |
}
|
| 560 |
else
|
| 561 |
{
|
| 562 |
memmove(p_data_line + offset_data_line, p_data_line + offset_data_line + str_len, (size_t)(len_data_line - offset_data_line - str_len));
|
| 563 |
p_data_line[len_data_line - str_len] = '\0';
|
| 564 |
len_data_line -= str_len;
|
| 565 |
}
|
| 566 |
|
| 567 |
// Set p_data_line to head of current display line
|
| 568 |
p_data_line = p_editor_data->p_display_lines[display_line];
|
| 569 |
split_line_total = last_display_line - display_line + 2;
|
| 570 |
|
| 571 |
// Split current data line since beginning of current display line
|
| 572 |
split_line_total = split_data_lines(p_data_line, SCREEN_COLS, line_offsets, split_line_total, 0, line_widths);
|
| 573 |
|
| 574 |
for (i = 0; i < split_line_total; i++)
|
| 575 |
{
|
| 576 |
p_editor_data->display_line_lengths[display_line + i] = line_offsets[i + 1] - line_offsets[i];
|
| 577 |
p_editor_data->display_line_widths[display_line + i] = line_widths[i];
|
| 578 |
p_editor_data->p_display_lines[display_line + i] =
|
| 579 |
(i == 0
|
| 580 |
? p_data_line
|
| 581 |
: (p_editor_data->p_display_lines[display_line + i - 1] + p_editor_data->display_line_lengths[display_line + i - 1]));
|
| 582 |
|
| 583 |
if (p_editor_data->display_line_lengths[display_line + i] > 0 &&
|
| 584 |
p_editor_data->p_display_lines[display_line + i][p_editor_data->display_line_lengths[display_line + i] - 1] == '\n')
|
| 585 |
{
|
| 586 |
break;
|
| 587 |
}
|
| 588 |
}
|
| 589 |
|
| 590 |
*p_last_updated_line = display_line + MIN(i, split_line_total - 1);
|
| 591 |
|
| 592 |
if (*p_last_updated_line < last_display_line)
|
| 593 |
{
|
| 594 |
// Remove redundant display line after last_display_line
|
| 595 |
// for (j = last_display_line + 1; j < p_editor_data->display_line_total; j++)
|
| 596 |
// {
|
| 597 |
// p_editor_data->p_display_lines[j - (last_display_line - *p_last_updated_line)] = p_editor_data->p_display_lines[j];
|
| 598 |
// p_editor_data->display_line_lengths[j - (last_display_line - *p_last_updated_line)] = p_editor_data->display_line_lengths[j];
|
| 599 |
// p_editor_data->display_line_widths[j - (last_display_line - *p_last_updated_line)] = p_editor_data->display_line_widths[j];
|
| 600 |
// }
|
| 601 |
memmove(p_editor_data->p_display_lines + *p_last_updated_line + 1,
|
| 602 |
p_editor_data->p_display_lines + last_display_line + 1,
|
| 603 |
(size_t)(p_editor_data->display_line_total - last_display_line - 1) *
|
| 604 |
sizeof(p_editor_data->p_display_lines[last_display_line + 1]));
|
| 605 |
memmove(p_editor_data->display_line_lengths + *p_last_updated_line + 1,
|
| 606 |
p_editor_data->display_line_lengths + last_display_line + 1,
|
| 607 |
(size_t)(p_editor_data->display_line_total - last_display_line - 1) *
|
| 608 |
sizeof(p_editor_data->display_line_lengths[last_display_line + 1]));
|
| 609 |
memmove(p_editor_data->display_line_widths + *p_last_updated_line + 1,
|
| 610 |
p_editor_data->display_line_widths + last_display_line + 1,
|
| 611 |
(size_t)(p_editor_data->display_line_total - last_display_line - 1) *
|
| 612 |
sizeof(p_editor_data->display_line_widths[last_display_line + 1]));
|
| 613 |
|
| 614 |
j = p_editor_data->display_line_total;
|
| 615 |
(p_editor_data->display_line_total) -= (last_display_line - *p_last_updated_line);
|
| 616 |
*p_last_updated_line = MAX(j - 1, *p_last_updated_line);
|
| 617 |
}
|
| 618 |
|
| 619 |
// Return real offset
|
| 620 |
*p_offset = offset;
|
| 621 |
|
| 622 |
return str_len;
|
| 623 |
}
|
| 624 |
|
| 625 |
static int editor_display_key_handler(int *p_key, EDITOR_CTX *p_ctx)
|
| 626 |
{
|
| 627 |
switch (*p_key)
|
| 628 |
{
|
| 629 |
case 0: // Set msg
|
| 630 |
snprintf(p_ctx->msg, sizeof(p_ctx->msg),
|
| 631 |
"| 退出[\033[32mCtrl-W\033[33m] |");
|
| 632 |
break;
|
| 633 |
case KEY_CSI:
|
| 634 |
*p_key = KEY_ESC;
|
| 635 |
break;
|
| 636 |
}
|
| 637 |
|
| 638 |
return 0;
|
| 639 |
}
|
| 640 |
|
| 641 |
int editor_display(EDITOR_DATA *p_editor_data)
|
| 642 |
{
|
| 643 |
static int show_help = 1;
|
| 644 |
char buffer[MAX_EDITOR_DATA_LINE_LENGTH];
|
| 645 |
EDITOR_CTX ctx;
|
| 646 |
int ch = 0;
|
| 647 |
char input_str[4];
|
| 648 |
char c;
|
| 649 |
int str_len = 0;
|
| 650 |
int input_ok;
|
| 651 |
const int screen_begin_row = 1;
|
| 652 |
const int screen_row_total = SCREEN_ROWS - screen_begin_row;
|
| 653 |
int output_current_row = screen_begin_row;
|
| 654 |
int output_end_row = SCREEN_ROWS - 1;
|
| 655 |
long int line_current = 0;
|
| 656 |
long int len;
|
| 657 |
int loop;
|
| 658 |
int eol, display_len;
|
| 659 |
long row_pos = 1, col_pos = 1;
|
| 660 |
long display_line_in, offset_in;
|
| 661 |
long display_line_out, offset_out;
|
| 662 |
int scroll_rows;
|
| 663 |
long last_updated_line = 0;
|
| 664 |
int key_insert = 1;
|
| 665 |
int i, j;
|
| 666 |
char *p_str;
|
| 667 |
int del_line;
|
| 668 |
|
| 669 |
clrline(output_current_row, SCREEN_ROWS);
|
| 670 |
|
| 671 |
// update msg_ext with extended key handler
|
| 672 |
if (editor_display_key_handler(&ch, &ctx) != 0)
|
| 673 |
{
|
| 674 |
return ch;
|
| 675 |
}
|
| 676 |
|
| 677 |
for (loop = 1; !SYS_server_exit && loop;)
|
| 678 |
{
|
| 679 |
if (line_current >= p_editor_data->display_line_total || output_current_row > output_end_row)
|
| 680 |
{
|
| 681 |
ctx.line_cursor = line_current - output_current_row + row_pos + 1;
|
| 682 |
|
| 683 |
snprintf(buffer, sizeof(buffer),
|
| 684 |
"\033[1;44;33m[\033[32m%ld\033[33m;\033[32m%ld\033[33m] "
|
| 685 |
"第\033[32m%ld\033[33m/\033[32m%ld\033[33m行 [\033[32m%s\033[33m] "
|
| 686 |
"%s",
|
| 687 |
row_pos, col_pos,
|
| 688 |
ctx.line_cursor, p_editor_data->display_line_total,
|
| 689 |
key_insert ? "插入" : "替换",
|
| 690 |
ctx.msg);
|
| 691 |
|
| 692 |
len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
|
| 693 |
for (; display_len < SCREEN_COLS; display_len++)
|
| 694 |
{
|
| 695 |
buffer[len++] = ' ';
|
| 696 |
}
|
| 697 |
buffer[len] = '\0';
|
| 698 |
strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
|
| 699 |
|
| 700 |
moveto(SCREEN_ROWS, 0);
|
| 701 |
prints("%s", buffer);
|
| 702 |
|
| 703 |
moveto((int)row_pos, (int)col_pos);
|
| 704 |
iflush();
|
| 705 |
|
| 706 |
str_len = 0;
|
| 707 |
ch = igetch_t(BBS_max_user_idle_time);
|
| 708 |
while (!SYS_server_exit)
|
| 709 |
{
|
| 710 |
if (ch != KEY_NULL && ch != KEY_TIMEOUT)
|
| 711 |
{
|
| 712 |
BBS_last_access_tm = time(NULL);
|
| 713 |
}
|
| 714 |
|
| 715 |
// extended key handler
|
| 716 |
if (editor_display_key_handler(&ch, &ctx) != 0)
|
| 717 |
{
|
| 718 |
goto cleanup;
|
| 719 |
}
|
| 720 |
|
| 721 |
if (ch < 256 && (ch & 0x80)) // head of multi-byte character
|
| 722 |
{
|
| 723 |
str_len = 0;
|
| 724 |
c = (char)(ch & 0xf0);
|
| 725 |
while (c & 0x80)
|
| 726 |
{
|
| 727 |
input_str[str_len] = (char)(ch - 256);
|
| 728 |
str_len++;
|
| 729 |
c = (c & 0x7f) << 1;
|
| 730 |
|
| 731 |
if ((c & 0x80) == 0) // Input completed
|
| 732 |
{
|
| 733 |
break;
|
| 734 |
}
|
| 735 |
|
| 736 |
// Expect additional bytes of input
|
| 737 |
ch = igetch(100); // 0.1 second
|
| 738 |
if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
|
| 739 |
{
|
| 740 |
#ifdef _DEBUG
|
| 741 |
log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
|
| 742 |
#endif
|
| 743 |
str_len = 0;
|
| 744 |
break;
|
| 745 |
}
|
| 746 |
}
|
| 747 |
}
|
| 748 |
|
| 749 |
if ((ch >= 32 && ch < 127) || str_len >= 2 || // Printable character or multi-byte character
|
| 750 |
ch == CR || ch == KEY_ESC) // Special character
|
| 751 |
{
|
| 752 |
// Refresh current action while user input
|
| 753 |
if (user_online_update(NULL) < 0)
|
| 754 |
{
|
| 755 |
log_error("user_online_update(NULL) error\n");
|
| 756 |
}
|
| 757 |
|
| 758 |
if (str_len == 0) // ch >= 32 && ch < 127
|
| 759 |
{
|
| 760 |
input_str[0] = (char)ch;
|
| 761 |
str_len = 1;
|
| 762 |
}
|
| 763 |
|
| 764 |
display_line_in = line_current - output_current_row + row_pos;
|
| 765 |
offset_in = split_line(p_editor_data->p_display_lines[display_line_in], (int)col_pos - 1, &eol, &display_len, 0);
|
| 766 |
display_line_out = display_line_in;
|
| 767 |
offset_out = offset_in;
|
| 768 |
|
| 769 |
last_updated_line = display_line_in;
|
| 770 |
|
| 771 |
if (!key_insert) // overwrite
|
| 772 |
{
|
| 773 |
if (editor_data_delete(p_editor_data, &display_line_out, &offset_out,
|
| 774 |
&last_updated_line, 0) < 0)
|
| 775 |
{
|
| 776 |
log_error("editor_data_delete() error\n");
|
| 777 |
}
|
| 778 |
}
|
| 779 |
|
| 780 |
if (editor_data_insert(p_editor_data, &display_line_out, &offset_out,
|
| 781 |
input_str, str_len, &last_updated_line) < 0)
|
| 782 |
{
|
| 783 |
log_error("editor_data_insert(str_len=%d) error\n", str_len);
|
| 784 |
}
|
| 785 |
else
|
| 786 |
{
|
| 787 |
output_end_row = MIN(SCREEN_ROWS - 1, output_current_row + (int)(last_updated_line - line_current));
|
| 788 |
line_current -= (output_current_row - row_pos);
|
| 789 |
output_current_row = (int)row_pos;
|
| 790 |
|
| 791 |
scroll_rows = MAX(0, (int)(display_line_out - display_line_in) - (output_end_row - output_current_row));
|
| 792 |
|
| 793 |
if (scroll_rows > 0)
|
| 794 |
{
|
| 795 |
moveto(SCREEN_ROWS, 0);
|
| 796 |
clrtoeol();
|
| 797 |
for (i = 0; i < scroll_rows; i++)
|
| 798 |
{
|
| 799 |
// prints("\033[S"); // Scroll up 1 line
|
| 800 |
prints("\n"); // Legacy Cterm only works with this line
|
| 801 |
}
|
| 802 |
|
| 803 |
output_current_row -= scroll_rows;
|
| 804 |
if (output_current_row < screen_begin_row)
|
| 805 |
{
|
| 806 |
line_current += (screen_begin_row - output_current_row);
|
| 807 |
output_current_row = screen_begin_row;
|
| 808 |
}
|
| 809 |
row_pos = output_end_row;
|
| 810 |
}
|
| 811 |
else // if (scroll_lines == 0)
|
| 812 |
{
|
| 813 |
row_pos += (display_line_out - display_line_in);
|
| 814 |
}
|
| 815 |
|
| 816 |
if (offset_out != offset_in)
|
| 817 |
{
|
| 818 |
if (display_line_out != display_line_in)
|
| 819 |
{
|
| 820 |
col_pos = 1;
|
| 821 |
}
|
| 822 |
if (offset_out > 0)
|
| 823 |
{
|
| 824 |
col_pos += (str_len == 1 ? 1 : 2);
|
| 825 |
}
|
| 826 |
}
|
| 827 |
}
|
| 828 |
|
| 829 |
if (display_line_out != display_line_in) // Output on line change
|
| 830 |
{
|
| 831 |
break;
|
| 832 |
}
|
| 833 |
|
| 834 |
ch = igetch(0);
|
| 835 |
if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Output if no futher input
|
| 836 |
{
|
| 837 |
break;
|
| 838 |
}
|
| 839 |
|
| 840 |
str_len = 0;
|
| 841 |
continue;
|
| 842 |
}
|
| 843 |
else if (ch == KEY_DEL || ch == BACKSPACE || ch == Ctrl('K') || ch == Ctrl('Y')) // Del
|
| 844 |
{
|
| 845 |
// Refresh current action while user input
|
| 846 |
if (user_online_update(NULL) < 0)
|
| 847 |
{
|
| 848 |
log_error("user_online_update(NULL) error\n");
|
| 849 |
}
|
| 850 |
|
| 851 |
del_line = 0;
|
| 852 |
|
| 853 |
if (ch == BACKSPACE)
|
| 854 |
{
|
| 855 |
if (line_current - output_current_row + row_pos <= 0 && col_pos <= 1) // Forbidden
|
| 856 |
{
|
| 857 |
break; // force output prior operation result if any
|
| 858 |
}
|
| 859 |
|
| 860 |
offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
|
| 861 |
(int)col_pos - 1, &eol, &display_len, 0);
|
| 862 |
if (offset_in >= 1 && p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in - 1] < 0) // UTF8
|
| 863 |
{
|
| 864 |
col_pos = display_len - 1;
|
| 865 |
}
|
| 866 |
else
|
| 867 |
{
|
| 868 |
col_pos = display_len;
|
| 869 |
}
|
| 870 |
|
| 871 |
if (col_pos < 1 && line_current - output_current_row + row_pos >= 0)
|
| 872 |
{
|
| 873 |
row_pos--;
|
| 874 |
col_pos = MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]);
|
| 875 |
}
|
| 876 |
}
|
| 877 |
else if (ch == Ctrl('K'))
|
| 878 |
{
|
| 879 |
del_line = 1;
|
| 880 |
}
|
| 881 |
else if (ch == Ctrl('Y'))
|
| 882 |
{
|
| 883 |
col_pos = 1;
|
| 884 |
del_line = 1;
|
| 885 |
}
|
| 886 |
|
| 887 |
display_line_in = line_current - output_current_row + row_pos;
|
| 888 |
offset_in = split_line(p_editor_data->p_display_lines[display_line_in], (int)col_pos - 1, &eol, &display_len, 0);
|
| 889 |
display_line_out = display_line_in;
|
| 890 |
offset_out = offset_in;
|
| 891 |
|
| 892 |
if ((str_len = editor_data_delete(p_editor_data, &display_line_out, &offset_out,
|
| 893 |
&last_updated_line, del_line)) < 0)
|
| 894 |
{
|
| 895 |
log_error("editor_data_delete() error: %d\n", str_len);
|
| 896 |
}
|
| 897 |
else
|
| 898 |
{
|
| 899 |
col_pos = display_len + 1; // Set col_pos to accurate pos
|
| 900 |
|
| 901 |
output_end_row = MIN(SCREEN_ROWS - 1, output_current_row + (int)(last_updated_line - line_current));
|
| 902 |
line_current -= (output_current_row - row_pos);
|
| 903 |
output_current_row = (int)row_pos;
|
| 904 |
|
| 905 |
if (output_current_row < screen_begin_row) // row_pos <= 0
|
| 906 |
{
|
| 907 |
output_current_row = screen_begin_row;
|
| 908 |
row_pos = screen_begin_row;
|
| 909 |
output_end_row = SCREEN_ROWS - 1;
|
| 910 |
}
|
| 911 |
|
| 912 |
// Exceed end
|
| 913 |
if (line_current + (screen_row_total - output_current_row) >= p_editor_data->display_line_total &&
|
| 914 |
p_editor_data->display_line_total > screen_row_total)
|
| 915 |
{
|
| 916 |
scroll_rows = (int)((line_current - (output_current_row - screen_begin_row)) -
|
| 917 |
(p_editor_data->display_line_total - screen_row_total));
|
| 918 |
|
| 919 |
line_current = p_editor_data->display_line_total - screen_row_total;
|
| 920 |
row_pos += scroll_rows;
|
| 921 |
output_current_row = screen_begin_row;
|
| 922 |
output_end_row = SCREEN_ROWS - 1;
|
| 923 |
}
|
| 924 |
|
| 925 |
clrline(output_current_row, output_end_row);
|
| 926 |
}
|
| 927 |
|
| 928 |
if (display_line_out != display_line_in) // Output on line change
|
| 929 |
{
|
| 930 |
break;
|
| 931 |
}
|
| 932 |
|
| 933 |
ch = igetch(0);
|
| 934 |
if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Output if no futher input
|
| 935 |
{
|
| 936 |
break;
|
| 937 |
}
|
| 938 |
|
| 939 |
str_len = 0;
|
| 940 |
continue;
|
| 941 |
}
|
| 942 |
|
| 943 |
input_ok = 1;
|
| 944 |
switch (ch)
|
| 945 |
{
|
| 946 |
case KEY_NULL:
|
| 947 |
log_error("KEY_NULL\n");
|
| 948 |
goto cleanup;
|
| 949 |
case KEY_TIMEOUT:
|
| 950 |
log_error("User input timeout\n");
|
| 951 |
goto cleanup;
|
| 952 |
case Ctrl('W'):
|
| 953 |
case Ctrl('X'):
|
| 954 |
loop = 0;
|
| 955 |
break;
|
| 956 |
case Ctrl('S'): // Start of line
|
| 957 |
case KEY_CTRL_LEFT:
|
| 958 |
col_pos = 1;
|
| 959 |
break;
|
| 960 |
case Ctrl('E'): // End of line
|
| 961 |
case KEY_CTRL_RIGHT:
|
| 962 |
if (line_current - output_current_row + row_pos == p_editor_data->display_line_total - 1) // row_pos at end line
|
| 963 |
{
|
| 964 |
// last display line does NOT have \n in the end
|
| 965 |
col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
|
| 966 |
break;
|
| 967 |
}
|
| 968 |
col_pos = MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]);
|
| 969 |
break;
|
| 970 |
case Ctrl('T'): // Top of screen
|
| 971 |
case KEY_CTRL_UP:
|
| 972 |
row_pos = screen_begin_row;
|
| 973 |
col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
|
| 974 |
break;
|
| 975 |
case Ctrl('B'): // Bottom of screen
|
| 976 |
case KEY_CTRL_DOWN:
|
| 977 |
if (p_editor_data->display_line_total < screen_row_total)
|
| 978 |
{
|
| 979 |
row_pos = p_editor_data->display_line_total;
|
| 980 |
}
|
| 981 |
else
|
| 982 |
{
|
| 983 |
row_pos = SCREEN_ROWS - 1;
|
| 984 |
}
|
| 985 |
if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= p_editor_data->display_line_total) // Reach end
|
| 986 |
{
|
| 987 |
// last display line does NOT have \n in the end
|
| 988 |
col_pos = MIN(col_pos, p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1);
|
| 989 |
}
|
| 990 |
else
|
| 991 |
{
|
| 992 |
col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
|
| 993 |
}
|
| 994 |
break;
|
| 995 |
case KEY_INS:
|
| 996 |
key_insert = !key_insert;
|
| 997 |
break;
|
| 998 |
case KEY_HOME:
|
| 999 |
row_pos = 1;
|
| 1000 |
col_pos = 1;
|
| 1001 |
if (line_current - output_current_row < 0) // Reach begin
|
| 1002 |
{
|
| 1003 |
break;
|
| 1004 |
}
|
| 1005 |
line_current = 0;
|
| 1006 |
output_current_row = screen_begin_row;
|
| 1007 |
output_end_row = SCREEN_ROWS - 1;
|
| 1008 |
clrline(output_current_row, SCREEN_ROWS);
|
| 1009 |
break;
|
| 1010 |
case KEY_END:
|
| 1011 |
if (p_editor_data->display_line_total < screen_row_total)
|
| 1012 |
{
|
| 1013 |
row_pos = p_editor_data->display_line_total;
|
| 1014 |
col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
|
| 1015 |
break;
|
| 1016 |
}
|
| 1017 |
line_current = p_editor_data->display_line_total - screen_row_total;
|
| 1018 |
output_current_row = screen_begin_row;
|
| 1019 |
output_end_row = SCREEN_ROWS - 1;
|
| 1020 |
row_pos = SCREEN_ROWS - 1;
|
| 1021 |
col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
|
| 1022 |
clrline(output_current_row, SCREEN_ROWS);
|
| 1023 |
break;
|
| 1024 |
case KEY_LEFT:
|
| 1025 |
offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
|
| 1026 |
(int)col_pos - 1, &eol, &display_len, 0);
|
| 1027 |
if (offset_in >= 1 && p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in - 1] < 0) // UTF8
|
| 1028 |
{
|
| 1029 |
col_pos = display_len - 1;
|
| 1030 |
}
|
| 1031 |
else
|
| 1032 |
{
|
| 1033 |
col_pos = display_len;
|
| 1034 |
}
|
| 1035 |
if (col_pos >= 1)
|
| 1036 |
{
|
| 1037 |
break;
|
| 1038 |
}
|
| 1039 |
col_pos = SCREEN_COLS; // continue to KEY_UP
|
| 1040 |
case KEY_UP:
|
| 1041 |
if (row_pos > screen_begin_row)
|
| 1042 |
{
|
| 1043 |
row_pos--;
|
| 1044 |
col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
|
| 1045 |
break;
|
| 1046 |
}
|
| 1047 |
if (line_current - output_current_row < 0) // Reach begin
|
| 1048 |
{
|
| 1049 |
col_pos = 1;
|
| 1050 |
break;
|
| 1051 |
}
|
| 1052 |
line_current -= output_current_row;
|
| 1053 |
output_current_row = screen_begin_row;
|
| 1054 |
// screen_end_line = begin_line;
|
| 1055 |
// prints("\033[T"); // Scroll down 1 line
|
| 1056 |
output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
|
| 1057 |
col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
|
| 1058 |
break;
|
| 1059 |
case KEY_RIGHT:
|
| 1060 |
offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
|
| 1061 |
(int)col_pos - 1, &eol, &display_len, 0);
|
| 1062 |
if (offset_in < p_editor_data->display_line_lengths[line_current - output_current_row + row_pos] &&
|
| 1063 |
p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] < 0) // UTF8
|
| 1064 |
{
|
| 1065 |
col_pos = display_len + 3;
|
| 1066 |
}
|
| 1067 |
else
|
| 1068 |
{
|
| 1069 |
col_pos = display_len + 2;
|
| 1070 |
}
|
| 1071 |
if (col_pos <= p_editor_data->display_line_widths[line_current - output_current_row + row_pos])
|
| 1072 |
{
|
| 1073 |
break;
|
| 1074 |
}
|
| 1075 |
col_pos = 1; // continue to KEY_DOWN
|
| 1076 |
case KEY_DOWN:
|
| 1077 |
if (row_pos < MIN(screen_row_total, p_editor_data->display_line_total))
|
| 1078 |
{
|
| 1079 |
row_pos++;
|
| 1080 |
col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
|
| 1081 |
break;
|
| 1082 |
}
|
| 1083 |
if (line_current - output_current_row + row_pos == p_editor_data->display_line_total - 1) // row_pos at end line
|
| 1084 |
{
|
| 1085 |
// last display line does NOT have \n in the end
|
| 1086 |
col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
|
| 1087 |
break;
|
| 1088 |
}
|
| 1089 |
line_current += (screen_row_total - (output_current_row - screen_begin_row));
|
| 1090 |
output_current_row = screen_row_total;
|
| 1091 |
output_end_row = SCREEN_ROWS - 1;
|
| 1092 |
col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
|
| 1093 |
moveto(SCREEN_ROWS, 0);
|
| 1094 |
clrtoeol();
|
| 1095 |
// prints("\033[S"); // Scroll up 1 line
|
| 1096 |
prints("\n"); // Legacy Cterm only works with this line
|
| 1097 |
break;
|
| 1098 |
case KEY_PGUP:
|
| 1099 |
if (line_current - output_current_row < 0) // Reach begin
|
| 1100 |
{
|
| 1101 |
break;
|
| 1102 |
}
|
| 1103 |
line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
|
| 1104 |
if (line_current < 0)
|
| 1105 |
{
|
| 1106 |
line_current = 0;
|
| 1107 |
}
|
| 1108 |
output_current_row = screen_begin_row;
|
| 1109 |
output_end_row = SCREEN_ROWS - 1;
|
| 1110 |
col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
|
| 1111 |
clrline(output_current_row, SCREEN_ROWS);
|
| 1112 |
break;
|
| 1113 |
case KEY_PGDN:
|
| 1114 |
if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= p_editor_data->display_line_total) // Reach end
|
| 1115 |
{
|
| 1116 |
break;
|
| 1117 |
}
|
| 1118 |
line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
|
| 1119 |
if (line_current + screen_row_total > p_editor_data->display_line_total) // No enough lines to display
|
| 1120 |
{
|
| 1121 |
line_current = p_editor_data->display_line_total - screen_row_total;
|
| 1122 |
}
|
| 1123 |
output_current_row = screen_begin_row;
|
| 1124 |
output_end_row = SCREEN_ROWS - 1;
|
| 1125 |
col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
|
| 1126 |
clrline(output_current_row, SCREEN_ROWS);
|
| 1127 |
break;
|
| 1128 |
case Ctrl('Q'):
|
| 1129 |
case KEY_F1:
|
| 1130 |
if (!show_help) // Not re-entrant
|
| 1131 |
{
|
| 1132 |
break;
|
| 1133 |
}
|
| 1134 |
// Display help information
|
| 1135 |
show_help = 0;
|
| 1136 |
display_file(DATA_EDITOR_HELP, 1);
|
| 1137 |
show_help = 1;
|
| 1138 |
case KEY_F5:
|
| 1139 |
// Refresh after display help information
|
| 1140 |
line_current -= (output_current_row - screen_begin_row);
|
| 1141 |
output_current_row = screen_begin_row;
|
| 1142 |
output_end_row = SCREEN_ROWS - 1;
|
| 1143 |
clrline(output_current_row, SCREEN_ROWS);
|
| 1144 |
break;
|
| 1145 |
case 0: // Refresh bottom line
|
| 1146 |
break;
|
| 1147 |
default:
|
| 1148 |
input_ok = 0;
|
| 1149 |
break;
|
| 1150 |
}
|
| 1151 |
|
| 1152 |
// Refresh current action while user input
|
| 1153 |
if (user_online_update(NULL) < 0)
|
| 1154 |
{
|
| 1155 |
log_error("user_online_update(NULL) error\n");
|
| 1156 |
}
|
| 1157 |
|
| 1158 |
if (input_ok)
|
| 1159 |
{
|
| 1160 |
break;
|
| 1161 |
}
|
| 1162 |
|
| 1163 |
ch = igetch_t(BBS_max_user_idle_time);
|
| 1164 |
}
|
| 1165 |
|
| 1166 |
continue;
|
| 1167 |
}
|
| 1168 |
|
| 1169 |
len = p_editor_data->display_line_lengths[line_current];
|
| 1170 |
if (len >= sizeof(buffer))
|
| 1171 |
{
|
| 1172 |
log_error("Buffer overflow: len=%ld line=%ld \n", len, line_current);
|
| 1173 |
len = sizeof(buffer) - 1;
|
| 1174 |
}
|
| 1175 |
else if (len < 0)
|
| 1176 |
{
|
| 1177 |
log_error("Incorrect line offsets: len=%ld line=%ld \n", len, line_current);
|
| 1178 |
len = 0;
|
| 1179 |
}
|
| 1180 |
|
| 1181 |
// memcpy(buffer, p_editor_data->p_display_lines[line_current], (size_t)len);
|
| 1182 |
// Replace '\033' with '*'
|
| 1183 |
p_str = p_editor_data->p_display_lines[line_current];
|
| 1184 |
for (i = 0, j = 0; i < len; i++)
|
| 1185 |
{
|
| 1186 |
if (p_str[i] == '\033')
|
| 1187 |
{
|
| 1188 |
memcpy(buffer + j, EDITOR_ESC_DISPLAY_STR, sizeof(EDITOR_ESC_DISPLAY_STR) - 1);
|
| 1189 |
j += (int)(sizeof(EDITOR_ESC_DISPLAY_STR) - 1);
|
| 1190 |
}
|
| 1191 |
else
|
| 1192 |
{
|
| 1193 |
buffer[j] = p_str[i];
|
| 1194 |
j++;
|
| 1195 |
}
|
| 1196 |
}
|
| 1197 |
buffer[j] = '\0';
|
| 1198 |
|
| 1199 |
moveto(output_current_row, 0);
|
| 1200 |
clrtoeol();
|
| 1201 |
prints("%s", buffer);
|
| 1202 |
line_current++;
|
| 1203 |
output_current_row++;
|
| 1204 |
}
|
| 1205 |
|
| 1206 |
cleanup:
|
| 1207 |
return ch;
|
| 1208 |
}
|
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