464 lines
16 KiB
C
464 lines
16 KiB
C
/* Deshab File Manager — 全屏文件管理器
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* 接入 fat32_io.h 共享头，支持：
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* - 子目录遍历（路径栈，Enter 进入 / Backspace 返回）
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* - FAT 链跟随（多簇文件/目录）
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* - 文件查看（Enter 打开文本文件，只读浏览，Esc 返回列表）
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* - 鼠标点击选择 + 键盘导航
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* Esc 退出返回 DSK/desktop。
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*/
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#include "../../firstInit/ascii_bitmaps.c"
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#include "../desktop_app.h"
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#include "../fat32_io.h"
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#define CHAR_STEP 12
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#define CHAR_H 18
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#define MAX_FILES 256
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#define MAX_DEPTH 16
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#define VIEW_BUF 24576 /* 文件查看器缓冲 24KB */
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static da_app_context g_ac;
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static da_cursor g_cursor;
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static da_mouse g_mouse;
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typedef struct {
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char name[13];
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u32 clus;
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u32 size;
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u8 is_dir;
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} fm_entry;
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static fm_entry files[MAX_FILES];
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static int file_count = 0;
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static int selected = 0;
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static int scroll_off = 0;
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/* 路径栈：每层记录目录首簇（0=根）与显示名 */
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static u32 path_clus[MAX_DEPTH];
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static char path_name[MAX_DEPTH][13];
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static int path_depth = 0; /* 0 = 根目录 */
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/* 文件查看器状态 */
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static int view_mode = 0;
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static u8 view_buf[VIEW_BUF];
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static u32 view_size = 0;
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static int view_scroll = 0;
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/* ---- 目录列举回调 ---- */
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static int fm_collect_cb(const f32_entry *e, void *user_data) {
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(void)user_data;
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if (file_count >= MAX_FILES) return 1;
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fm_entry *f = &files[file_count];
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for (int i = 0; i < 13; i++) f->name[i] = e->name[i];
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f->clus = e->clus;
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f->size = e->size;
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f->is_dir = e->is_dir;
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file_count++;
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return 0;
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}
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static void load_current_dir(void) {
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file_count = 0;
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selected = 0;
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scroll_off = 0;
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u32 dir_clus = (path_depth == 0) ? 0 : path_clus[path_depth - 1];
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f32_list_dir(dir_clus, fm_collect_cb, 0);
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/* 如果不是根目录，在开头添加 ".." 返回上级条目 */
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if (path_depth > 0 && file_count < MAX_FILES) {
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/* 将现有文件向后移动 */
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for (int i = file_count; i > 0; i--) {
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files[i] = files[i - 1];
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}
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/* 在开头插入 ".." 条目 */
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files[0].name[0] = '.';
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files[0].name[1] = '.';
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files[0].name[2] = 0;
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files[0].clus = 0; /* 特殊标记 */
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files[0].size = 0;
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files[0].is_dir = 1;
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file_count++;
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}
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}
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/* ---- 路径显示 ---- */
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static void build_path_str(char *out, int cap) {
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int p = 0;
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out[p++] = '/';
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for (int i = 0; i < path_depth && p < cap - 13; i++) {
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const char *n = path_name[i];
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while (*n && p < cap - 2) out[p++] = *n++;
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out[p++] = '/';
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}
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out[p] = 0;
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}
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/* ---- 数字转字符串 ---- */
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static void fm_u32_dec(char *buf, u32 v) {
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char tmp[12]; int n = 0;
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if (!v) { buf[0] = '0'; buf[1] = 0; return; }
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while (v && n < 11) { tmp[n++] = '0' + (v % 10); v /= 10; }
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for (int i = 0; i < n; i++) buf[i] = tmp[n - 1 - i];
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buf[n] = 0;
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}
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/* ---- 列表视图绘制 ---- */
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static void redraw_list(void) {
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da_fill_bg(&g_ac, DA_BG_PRIMARY);
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da_draw_titlebar(&g_ac, "Files", (i64)g_ac.fb_w);
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/* 当前路径 */
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char path_str[200];
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build_path_str(path_str, sizeof(path_str));
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da_draw_string(&g_ac, path_str, 12, DA_TITLEBAR_H + 4, DA_ACCENT, DA_BG_PRIMARY, CHAR_STEP);
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int margin = 12;
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int top_y = DA_TITLEBAR_H + 4 + CHAR_H + 4;
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int row_h = CHAR_H + 6;
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int visible_rows = ((int)g_ac.fb_h - top_y - DA_STATUSBAR_H - 8) / row_h;
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int col_name_x = margin + 32;
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int col_size_x = (int)g_ac.fb_w - 160;
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int col_type_x = (int)g_ac.fb_w - 60;
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/* 列标题 */
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da_draw_string(&g_ac, "Name", col_name_x, top_y, DA_TEXT_DIM, DA_BG_PRIMARY, CHAR_STEP);
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da_draw_string(&g_ac, "Size", col_size_x, top_y, DA_TEXT_DIM, DA_BG_PRIMARY, CHAR_STEP);
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da_draw_string(&g_ac, "Type", col_type_x, top_y, DA_TEXT_DIM, DA_BG_PRIMARY, CHAR_STEP);
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da_fill_rect(&g_ac, margin, top_y + CHAR_H, (i64)g_ac.fb_w - margin * 2, 1, DA_BORDER);
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/* 滚动范围调整 */
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if (scroll_off < 0) scroll_off = 0;
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if (file_count > visible_rows && scroll_off > file_count - visible_rows)
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scroll_off = file_count - visible_rows;
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if (scroll_off < 0) scroll_off = 0;
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for (int i = 0; i < visible_rows; i++) {
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int idx = scroll_off + i;
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if (idx >= file_count) break;
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int y = top_y + CHAR_H + 6 + i * row_h;
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if (idx == selected) {
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da_fill_rect(&g_ac, margin, y - 2, (i64)g_ac.fb_w - margin * 2, row_h, DA_BG_TERTIARY);
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da_rect_outline(&g_ac, margin, y - 2, (i64)g_ac.fb_w - margin * 2, row_h, DA_ACCENT, 4);
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}
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u32 icon_color = files[idx].is_dir ? DA_WARNING : DA_ACCENT;
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da_fill_rounded_rect(&g_ac, margin + 4, y, 24, 16, icon_color, 3);
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u32 name_color = (idx == selected) ? DA_ACCENT_LIGHT : DA_TEXT_PRIMARY;
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da_draw_string(&g_ac, files[idx].name, col_name_x, y, name_color,
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(idx == selected) ? DA_BG_TERTIARY : DA_BG_PRIMARY, CHAR_STEP);
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if (!files[idx].is_dir) {
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char sz[16];
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fm_u32_dec(sz, files[idx].size);
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int sl = 0; while (sz[sl]) sl++;
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sz[sl++] = ' '; sz[sl++] = 'B'; sz[sl] = 0;
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da_draw_string(&g_ac, sz, col_size_x, y, DA_TEXT_DIM,
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(idx == selected) ? DA_BG_TERTIARY : DA_BG_PRIMARY, CHAR_STEP);
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} else {
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da_draw_string(&g_ac, "--", col_size_x, y, DA_TEXT_DIM,
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(idx == selected) ? DA_BG_TERTIARY : DA_BG_PRIMARY, CHAR_STEP);
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}
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const char *type = files[idx].is_dir ? "DIR" : "FILE";
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da_draw_string(&g_ac, type, col_type_x, y, DA_TEXT_DIM,
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(idx == selected) ? DA_BG_TERTIARY : DA_BG_PRIMARY, CHAR_STEP);
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}
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if (file_count == 0) {
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da_draw_string(&g_ac, "No files found (empty or no block device)",
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margin + 20, top_y + 60, DA_TEXT_DIM, DA_BG_PRIMARY, CHAR_STEP);
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}
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/* 状态栏 */
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char status[80]; int p = 0;
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char nc[12]; fm_u32_dec(nc, (u32)file_count);
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const char *s1 = "items: "; while (*s1) status[p++] = *s1++;
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for (int i = 0; nc[i]; i++) status[p++] = nc[i];
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const char *s2 = " | Enter:open Backspace:up Esc:exit";
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while (*s2) status[p++] = *s2++;
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status[p] = 0;
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da_draw_statusbar(&g_ac, status, (i64)g_ac.fb_w, (i64)g_ac.fb_h);
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da_cursor_save(&g_ac, &g_cursor);
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da_cursor_draw(&g_ac, &g_cursor, DA_CURSOR_COLOR);
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}
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/* ---- 文件查看器绘制 ---- */
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static void redraw_view(void) {
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da_fill_bg(&g_ac, DA_BG_PRIMARY);
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/* 标题栏显示文件名 */
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char title[32]; int p = 0;
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const char *t = "View: ";
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while (*t && p < 30) title[p++] = *t++;
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if (selected >= 0 && selected < file_count) {
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const char *fn = files[selected].name;
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while (*fn && p < 30) title[p++] = *fn++;
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}
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title[p] = 0;
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da_draw_titlebar(&g_ac, title, (i64)g_ac.fb_w);
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int margin = 12;
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int top_y = DA_TITLEBAR_H + 4;
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int row_h = CHAR_H + 2;
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int visible_rows = ((int)g_ac.fb_h - top_y - DA_STATUSBAR_H - 8) / row_h;
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/* 按行显示文本内容 */
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int y = top_y;
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u32 pos = 0;
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int line = 0;
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/* 跳过 view_scroll 行 */
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int skip = view_scroll;
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while (pos < view_size && skip > 0) {
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if (view_buf[pos] == '\n') { skip--; }
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pos++;
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}
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while (pos < view_size && line < visible_rows) {
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/* 提取一行 */
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int line_start = pos;
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while (pos < view_size && view_buf[pos] != '\n' && pos - line_start < 80) pos++;
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int line_len = pos - line_start;
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/* 绘制字符 */
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for (int i = 0; i < line_len && i < 80; i++) {
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char c = (char)view_buf[line_start + i];
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if (c == '\r') continue;
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if (c < ' ' || c > '~') c = '.';
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char buf[2]; buf[0] = c; buf[1] = 0;
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da_draw_string(&g_ac, buf, margin + i * CHAR_STEP, y, DA_TEXT_PRIMARY, DA_BG_PRIMARY, CHAR_STEP);
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}
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y += row_h;
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line++;
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if (pos < view_size && view_buf[pos] == '\n') pos++;
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/* 处理 \r\n */
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if (pos < view_size && view_buf[pos] == '\r') pos++;
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}
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/* 状态栏 */
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char status[80]; p = 0;
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char sz[12]; fm_u32_dec(sz, view_size);
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const char *s1 = "size: "; while (*s1) status[p++] = *s1++;
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for (int i = 0; sz[i]; i++) status[p++] = sz[i];
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const char *s2 = "B | Up/Down:scroll Esc:back";
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while (*s2) status[p++] = *s2++;
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status[p] = 0;
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da_draw_statusbar(&g_ac, status, (i64)g_ac.fb_w, (i64)g_ac.fb_h);
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da_cursor_save(&g_ac, &g_cursor);
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da_cursor_draw(&g_ac, &g_cursor, DA_CURSOR_COLOR);
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}
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static void redraw_all(void) {
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if (view_mode) redraw_view();
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else redraw_list();
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}
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/* ---- 打开文件/目录 ---- */
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static void open_selected(void) {
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if (selected < 0 || selected >= file_count) return;
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fm_entry *f = &files[selected];
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/* 特殊处理 ".." 条目 */
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if (path_depth > 0 && selected == 0 && f->name[0] == '.' && f->name[1] == '.' && f->name[2] == 0) {
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go_up();
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return;
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}
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if (f->is_dir) {
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/* 进入子目录 */
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if (path_depth < MAX_DEPTH - 1) {
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path_clus[path_depth] = f->clus;
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for (int i = 0; i < 13; i++) path_name[path_depth][i] = f->name[i];
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path_name[path_depth][12] = 0;
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path_depth++;
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load_current_dir();
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}
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return;
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}
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/* 文件：读取内容进查看器 */
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if (f->size == 0) {
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view_size = 0;
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} else {
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u32 rd = f->size;
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if (rd > VIEW_BUF) rd = VIEW_BUF;
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if (f32_read_file_by_clus(f->clus, f->size, view_buf, VIEW_BUF) != 0) {
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da_slog("fileman", "read file failed");
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return;
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}
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view_size = rd;
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}
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view_mode = 1;
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view_scroll = 0;
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}
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/* ---- 返回上级目录 ---- */
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static void go_up(void) {
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if (path_depth > 0) {
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path_depth--;
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load_current_dir();
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}
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}
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/* 查找并进入 SYSTEM/user 目录 */
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static void find_user_dir(void) {
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/* 先查找 SYSTEM 目录 */
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file_count = 0;
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f32_list_dir(0, fm_collect_cb, 0);
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u32 system_clus = 0;
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for (int i = 0; i < file_count; i++) {
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if (files[i].is_dir && files[i].name[0] == 'S' && files[i].name[1] == 'Y' &&
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files[i].name[2] == 'S' && files[i].name[3] == 'T' &&
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files[i].name[4] == 'E' && files[i].name[5] == 'M') {
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system_clus = files[i].clus;
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break;
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}
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}
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if (!system_clus) return; /* SYSTEM 目录不存在，保持根目录 */
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/* 在 SYSTEM 中查找 user 目录 */
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file_count = 0;
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f32_list_dir(system_clus, fm_collect_cb, 0);
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for (int i = 0; i < file_count; i++) {
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if (files[i].is_dir && files[i].name[0] == 'U' && files[i].name[1] == 'S' &&
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files[i].name[2] == 'E' && files[i].name[3] == 'R') {
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/* 找到了 SYSTEM/user，设置路径栈 */
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path_clus[0] = system_clus;
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path_name[0][0] = 'S'; path_name[0][1] = 'Y'; path_name[0][2] = 'S';
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path_name[0][3] = 'T'; path_name[0][4] = 'E'; path_name[0][5] = 'M';
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path_name[0][6] = 0;
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path_clus[1] = files[i].clus;
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path_name[1][0] = 'U'; path_name[1][1] = 'S'; path_name[1][2] = 'E';
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path_name[1][3] = 'R'; path_name[1][4] = 0;
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path_depth = 2;
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return;
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}
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}
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}
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__attribute__((visibility("default")))
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void dsk_entry(const da_boot_context *ctx) {
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__asm__ volatile("cli");
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da_slog("fileman", "boot");
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if (!ctx || ctx->magic != DA_BOOT_MAGIC) {
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da_slog("fileman", "bad context");
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for(;;) __asm__("hlt");
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}
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da_init(&g_ac, ctx);
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da_cursor_init(&g_cursor, (i64)g_ac.fb_w, (i64)g_ac.fb_h);
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da_mouse_init();
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/* 初始化 fat32_io：注入 block_read/block_write */
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f32_init((f32_block_read_fn)g_ac.block_read, (f32_block_write_fn)g_ac.block_write);
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path_depth = 0;
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/* 尝试进入 SYSTEM/user 目录 */
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find_user_dir();
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load_current_dir();
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redraw_all();
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int e0 = 0, shift = 0; (void)shift;
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for (;;) {
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int need_redraw = 0;
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/* 鼠标轮询 */
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if (da_mouse_poll(&g_mouse, &g_cursor, (i64)g_ac.fb_w, (i64)g_ac.fb_h)) {
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need_redraw = 1;
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if (g_cursor.btn) {
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/* 检查关闭按钮点击（右上角：w-28, 4, 24, 20） */
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if (g_cursor.mx >= (i64)g_ac.fb_w - 28 && g_cursor.mx < (i64)g_ac.fb_w - 4 &&
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g_cursor.my >= 4 && g_cursor.my < 24) {
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da_slog("fileman", "close button clicked");
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return;
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}
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if (!view_mode) {
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int top_y = DA_TITLEBAR_H + 4 + CHAR_H + 4;
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int row_h = CHAR_H + 6;
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int click_y = g_cursor.my - top_y - CHAR_H - 6;
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if (click_y >= 0) {
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int idx = click_y / row_h + scroll_off;
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if (idx >= 0 && idx < file_count) {
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selected = idx;
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need_redraw = 1;
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}
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}
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}
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}
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}
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/* 键盘轮询 */
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u8 st = inb(0x64);
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if ((st & 1) && !(st & 0x20)) {
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u8 data = inb(0x60);
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u8 sc = data;
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if (sc == 0xE0) { e0 = 1; goto skip; }
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if (sc == 0x2A || sc == 0x36) { shift = 1; goto skip; }
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if (sc == 0xAA || sc == 0xB6) { shift = 0; goto skip; }
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if (sc & 0x80) { e0 = 0; goto skip; }
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if (sc == 0x01) { /* Esc */
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if (view_mode) {
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view_mode = 0;
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need_redraw = 1;
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} else {
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da_slog("fileman", "exit");
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return;
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}
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goto skip;
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}
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if (view_mode) {
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/* 查看器模式：Up/Down 滚动 */
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if (e0) {
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if (sc == 0x48) { if (view_scroll > 0) view_scroll--; need_redraw = 1; }
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else if (sc == 0x50) { view_scroll++; need_redraw = 1; }
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e0 = 0;
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goto skip;
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}
|
||
/* PageUp/PageDown */
|
||
if (sc == 0x49) { view_scroll -= 10; if (view_scroll < 0) view_scroll = 0; need_redraw = 1; }
|
||
else if (sc == 0x51) { view_scroll += 10; need_redraw = 1; }
|
||
goto skip;
|
||
}
|
||
|
||
/* 列表模式 */
|
||
if (e0) {
|
||
if (sc == 0x48) { /* Up */
|
||
if (selected > 0) selected--;
|
||
if (selected < scroll_off) scroll_off = selected;
|
||
need_redraw = 1;
|
||
} else if (sc == 0x50) { /* Down */
|
||
if (selected < file_count - 1) selected++;
|
||
need_redraw = 1;
|
||
}
|
||
e0 = 0;
|
||
goto skip;
|
||
}
|
||
|
||
if (sc == 0x1C) { /* Enter - 打开 */
|
||
open_selected();
|
||
need_redraw = 1;
|
||
} else if (sc == 0x0E) { /* Backspace - 返回上级 */
|
||
go_up();
|
||
need_redraw = 1;
|
||
} else if (sc == 0x49) { /* PageUp */
|
||
selected -= 10; if (selected < 0) selected = 0;
|
||
if (selected < scroll_off) scroll_off = selected;
|
||
need_redraw = 1;
|
||
} else if (sc == 0x51) { /* PageDown */
|
||
selected += 10; if (selected >= file_count) selected = file_count - 1;
|
||
need_redraw = 1;
|
||
}
|
||
}
|
||
skip:
|
||
if (need_redraw) {
|
||
da_cursor_restore(&g_ac, &g_cursor);
|
||
redraw_all();
|
||
}
|
||
__asm__("pause");
|
||
}
|
||
}
|