AskaEth
dc9bfdbdaf
字体：find_font_rec/resolve_font 从 reader.c 抽到 app/font_resolve.c 并加进程内记忆化。 只缓存成功路径；命中后仍做一次 access() 校验（字库被删即重扫）；没找到不缓存， 用户之后拷入的字库下次开书即可找到。顶栏「刷新」额外调 font_cache_invalidate()， 给「新拷入字库、旧字库仍在」一条显式失效路径。宿主实测：35 目录树 walk 0.026~0.54ms （=300+ 次系统调用）vs 命中 0.001ms（1 次 access）；开书路径每次省一次完整 walk。 徽标：副题格式化抽成 shelf_fmt_sub()（扫描与「刚读完置顶」共用一份实现）， promote_just_read() 改 ts 后立即重算这本的 sub/sub_folder，「· 读」不再等下次全量刷新。 回归：test_reader_core 6846、shelf_group_smoke 63（+8）、font_resolve_smoke 14 全绿； build_reader.sh 0 warning；扫描缓存/进度语义未改。app.json 0.1.3/code4 → 0.1.4/code5。
303 lines
11 KiB
C
303 lines
11 KiB
C
/* app/shelf_model.c — 书架数据模型实现（见 app/shelf_model.h）。 */
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#include "shelf_model.h"
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#include <dirent.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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int shelf_fmt_from_ext(const char *name)
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{
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const char *d = strrchr(name, '.');
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if (!d) return -1;
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if (strcasecmp(d, ".txt") == 0) return 0;
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if (strcasecmp(d, ".fb2") == 0) return 1;
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if (strcasecmp(d, ".epub") == 0) return 2;
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if (strcasecmp(d, ".mobi") == 0) return 3;
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if (strcasecmp(d, ".cbz") == 0) return 4;
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return -1;
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}
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const char *shelf_fmt_name(int f)
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{
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switch (f) {
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case 0: return "TXT";
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case 1: return "FB2";
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case 2: return "EPUB";
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case 3: return "MOBI";
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case 4: return "CBZ";
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default: return "?";
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}
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}
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void shelf_fmt_size(char *out, int outsz, long size)
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{
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if (!out || outsz <= 0) return;
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if (size >= 1 << 20) snprintf(out, (size_t)outsz, "%.1fMB", (double)size / (1 << 20));
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else if (size >= 1 << 10) snprintf(out, (size_t)outsz, "%.0fKB", (double)size / (1 << 10));
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else snprintf(out, (size_t)outsz, "%ldB", size);
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}
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int shelf_copy_utf8(char *dst, int cap, const char *src)
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{
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if (!dst || cap <= 0) return 0;
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if (!src) { dst[0] = 0; return 0; }
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int limit = cap - 1;
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int n = 0;
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while (src[n] && n < limit) n++;
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if (src[n]) {
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/* 截断：若 src[n] 是续字节（10xxxxxx），回退到该字符首字节之前，整段丢弃。 */
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while (n > 0 && ((unsigned char)src[n] & 0xC0) == 0x80) n--;
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}
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memcpy(dst, src, (size_t)n);
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dst[n] = 0;
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return n;
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}
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static int cmp_recent_then_name(const void *a, const void *b)
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{
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const shelf_book *x = (const shelf_book *)a, *y = (const shelf_book *)b;
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if (x->ts != y->ts) return (x->ts < y->ts) ? 1 : -1; /* 最近在前 */
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return strcasecmp(x->title, y->title);
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}
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/* 最近阅读排序（扫描后 / 刚读完置顶共用同一口径）。 */
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void shelf_sort_recent(shelf_book *books, int nbooks)
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{
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if (!books || nbooks < 2) return;
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qsort(books, (size_t)nbooks, sizeof(shelf_book), cmp_recent_then_name);
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}
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/* 重建一本书的两种副题（扫描后与「刚读完置顶」共用同一份格式化逻辑）。
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* sub = 格式 · 大小 [· 读]（format 模式/宫格）
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* sub_folder = 相对 book.group 第一级之后的子路径 · sub（folder 模式）
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*/
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void shelf_fmt_sub(shelf_book *b)
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{
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if (!b) return;
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char sz[24];
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shelf_fmt_size(sz, sizeof sz, b->size);
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/* 默认副题：与 M27 前逐字一致（format 模式/宫格都用它）。 */
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snprintf(b->sub, sizeof b->sub, "%s · %s%s", shelf_fmt_name(b->fmt), sz,
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b->ts ? " · 读" : "");
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/* folder 副题：第一级之后的子路径（分类/作品）前置，其余同默认副题。 */
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const char *rest = strchr(b->group, '/');
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if (rest) rest++;
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if (rest && rest[0]) {
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char pre[100];
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shelf_copy_utf8(pre, (int)sizeof pre, rest);
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snprintf(b->sub_folder, sizeof b->sub_folder, "%s · %s", pre, b->sub);
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} else {
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snprintf(b->sub_folder, sizeof b->sub_folder, "%s", b->sub);
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}
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}
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typedef struct scan_ctx {
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shelf_book *books;
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int cap;
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int n;
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int truncated;
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int depth_skipped;
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shelf_ts_fn ts_fn;
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} scan_ctx;
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/* 统计 dir 子树里还能识别的书籍文件数（只数不收集）。自身留 8 层硬上限，
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* 防符号链接/异常深目录把计数也拖死。返回书籍文件数。 */
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static int count_books_under(const char *dir, int depth)
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{
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if (depth > SHELF_SCAN_MAX_DEPTH + 8) return 0;
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int n = 0;
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DIR *dp = opendir(dir);
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if (!dp) return 0;
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struct dirent *de;
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while ((de = readdir(dp))) {
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if (de->d_name[0] == '.') continue;
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char path[400];
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if (snprintf(path, sizeof path, "%s/%s", dir, de->d_name) >= (int)sizeof path) continue;
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struct stat st;
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if (stat(path, &st) != 0) continue;
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if (S_ISDIR(st.st_mode)) { n += count_books_under(path, depth + 1); continue; }
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if (shelf_fmt_from_ext(de->d_name) >= 0) n++;
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}
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closedir(dp);
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return n;
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}
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/* 递归收集。rel = 相对 root 的完整目录路径（root 自身为 ""），
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* top = 第一级目录名（root 自身/根下文件为 ""）。 */
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static void scan_dir(scan_ctx *c, const char *dir, int depth, const char *rel, const char *top)
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{
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if (depth > SHELF_SCAN_MAX_DEPTH) return; /* 防深嵌套/循环 */
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if (c->n >= c->cap) return; /* 已满：不再进新目录 */
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DIR *dp = opendir(dir);
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if (!dp) return;
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struct dirent *de;
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while ((de = readdir(dp))) {
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if (de->d_name[0] == '.') continue;
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char path[400];
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if (snprintf(path, sizeof path, "%s/%s", dir, de->d_name) >= (int)sizeof path) continue;
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struct stat st;
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if (stat(path, &st) != 0) continue;
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if (S_ISDIR(st.st_mode)) {
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if (depth + 1 > SHELF_SCAN_MAX_DEPTH) {
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c->depth_skipped += count_books_under(path, depth + 1); /* 超深：计数→可见提示 */
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continue;
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}
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if (c->n >= c->cap) {
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/* 上限卡在目录边界：探一下这个子树是否真有书，有书才算被截断。
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* 只探空目录不置位，避免“正好装满且后面全是空目录”误报。 */
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if (!c->truncated && count_books_under(path, depth + 1) > 0) c->truncated = 1;
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if (c->truncated) break; /* 已确认丢书，后面的目录/文件不必再跑 */
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continue;
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}
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char subrel[SHELF_GROUP_MAX * 16];
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snprintf(subrel, sizeof subrel, "%s%s%s", rel, rel[0] ? "/" : "", de->d_name);
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/* 第一级目录名 = top；更深层沿用。de->d_name 在递归返回前有效。 */
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scan_dir(c, path, depth + 1, subrel, depth == 0 ? de->d_name : top);
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continue;
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}
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int f = shelf_fmt_from_ext(de->d_name);
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if (f < 0) continue;
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if (c->n >= c->cap) { c->truncated = 1; break; } /* 超限：可见提示，不静默 */
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shelf_book *b = &c->books[c->n];
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shelf_copy_utf8(b->path, (int)sizeof b->path, path);
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shelf_copy_utf8(b->title, (int)sizeof b->title, de->d_name);
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char *dot = strrchr(b->title, '.');
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if (dot) *dot = 0; /* 标题去扩展名 */
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shelf_copy_utf8(b->group, (int)sizeof b->group, rel);
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shelf_copy_utf8(b->top, (int)sizeof b->top, top);
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b->fmt = f;
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b->size = (long)st.st_size;
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b->ts = c->ts_fn ? c->ts_fn(b->path) : 0;
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shelf_fmt_sub(b); /* 副题：格式 · 大小 [· 读]（+ folder 子路径） */
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c->n++;
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}
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closedir(dp);
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}
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int shelf_scan_books(const char *root, shelf_book *books, int cap,
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shelf_ts_fn ts_fn, shelf_scan_report *rep)
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{
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if (rep) { rep->nbooks = 0; rep->truncated = 0; rep->depth_skipped = 0; rep->root_missing = 0; }
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if (!root || !books || cap <= 0) {
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if (rep) rep->root_missing = 1;
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return 0;
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}
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DIR *dp = opendir(root);
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if (!dp) {
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if (rep) rep->root_missing = 1;
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return 0;
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}
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closedir(dp);
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scan_ctx c;
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c.books = books; c.cap = cap; c.n = 0; c.truncated = 0; c.depth_skipped = 0; c.ts_fn = ts_fn;
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scan_dir(&c, root, 0, "", "");
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shelf_sort_recent(books, c.n);
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if (rep) {
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rep->nbooks = c.n;
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rep->truncated = c.truncated;
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rep->depth_skipped = c.depth_skipped;
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}
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return c.n;
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}
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/* ---- 行序列 ---- */
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/* 分组键 = top（Books 第一级目录名）。长度截到第一个 '/'，排序时忽略大小写。 */
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static int top_len(const char *s)
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{
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const char *p = strchr(s, '/');
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return p ? (int)(p - s) : (int)strlen(s);
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}
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static int top_cmp(const char *a, const char *b)
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{
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int la = top_len(a), lb = top_len(b);
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if (!la != !lb) return la ? 1 : -1; /* 根组 "" 恒置顶 */
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int m = la < lb ? la : lb;
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int c = strncasecmp(a, b, (size_t)m);
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if (c) return c;
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return la - lb;
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}
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static int top_eq(const char *a, const char *b) { return top_cmp(a, b) == 0; }
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/* 段头排序：根组（top==""）恒置顶，其余按第一级目录名不区分大小写排序。 */
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static int cmp_group_key(const void *pa, const void *pb)
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{
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return top_cmp(*(const char *const *)pa, *(const char *const *)pb);
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}
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static int build_rows_format(const shelf_book *books, int nbooks,
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shelf_row *rows, int rowcap)
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{
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static const int fmts[] = { 0, 1, 2, 3, 4 };
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int nrows = 0;
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for (size_t fi = 0; fi < sizeof fmts / sizeof fmts[0]; fi++) {
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int fmt = fmts[fi];
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int have = 0;
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if (nrows >= rowcap) break;
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for (int i = 0; i < nbooks; i++) {
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if (books[i].fmt != fmt) continue;
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if (!have) {
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if (nrows >= rowcap) break;
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rows[nrows].section = 1; rows[nrows].fmt = fmt;
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rows[nrows].book = -1; rows[nrows].label = NULL;
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nrows++;
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have = 1;
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}
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if (nrows >= rowcap) break;
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rows[nrows].section = 0; rows[nrows].fmt = fmt;
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rows[nrows].book = i; rows[nrows].label = NULL;
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nrows++;
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}
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}
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return nrows;
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}
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static int build_rows_folder(const shelf_book *books, int nbooks,
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shelf_row *rows, int rowcap)
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{
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/* 去重分组键（books[].top，""=根组）。键指向 books 内字符串，生存期覆盖 rows。 */
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static const char *keys[SHELF_MAX_BOOKS];
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int nkeys = 0;
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for (int i = 0; i < nbooks; i++) {
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const char *k = books[i].top;
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int seen = 0;
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for (int j = 0; j < nkeys; j++) {
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if (top_eq(keys[j], k)) { seen = 1; break; }
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}
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if (!seen) keys[nkeys++] = k;
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}
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qsort(keys, (size_t)nkeys, sizeof keys[0], cmp_group_key);
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int nrows = 0;
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for (int ki = 0; ki < nkeys; ki++) {
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if (nrows >= rowcap) break;
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rows[nrows].section = 1;
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rows[nrows].fmt = -1;
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rows[nrows].book = -1;
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rows[nrows].label = keys[ki][0] ? keys[ki] : SHELF_GROUP_ROOT;
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nrows++;
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for (int i = 0; i < nbooks; i++) {
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if (!top_eq(books[i].top, keys[ki])) continue;
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if (nrows >= rowcap) break;
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rows[nrows].section = 0;
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rows[nrows].fmt = books[i].fmt;
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rows[nrows].book = i;
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rows[nrows].label = NULL;
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nrows++;
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}
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}
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return nrows;
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}
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int shelf_build_rows(const shelf_book *books, int nbooks, int folder_mode,
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shelf_row *rows, int rowcap)
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{
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if (!books || !rows || nbooks <= 0 || rowcap <= 0) return 0;
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if (nbooks > SHELF_MAX_BOOKS) nbooks = SHELF_MAX_BOOKS;
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return folder_mode ? build_rows_folder(books, nbooks, rows, rowcap)
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: build_rows_format(books, nbooks, rows, rowcap);
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}
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