init
This commit is contained in:
pluv committed
commit
e54390a9f8
85 files changed
+29923
No files matched your search
+305
@@ -0,0 +1,305 @@
|
||||
/* md_demo.c - Markdown 渲染效果演示
|
||||
*
|
||||
* 一个独立的小程序：把内置示例（或你指定的文件 / stdin）喂进 ligent 的
|
||||
* 流式 Markdown 渲染器，直观看到每种语法的渲染结果。
|
||||
*
|
||||
* 编译： make md_demo
|
||||
* 运行： ./build/md_demo
|
||||
*/
|
||||
#include "markdown.h"
|
||||
#include "util.h"
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <time.h>
|
||||
#include <unistd.h>
|
||||
|
||||
/* ------------------------------------------------------------------ */
|
||||
/* 内置示例：把支持的语法和边界情况都覆盖一遍 */
|
||||
/* ------------------------------------------------------------------ */
|
||||
|
||||
static const char *SAMPLE =
|
||||
"# ligent 渲染演示\n"
|
||||
"\n"
|
||||
"## 行内样式\n"
|
||||
"\n"
|
||||
"这是 **粗体**、*斜体*、_下划线斜体_ 和 `行内代码` 的混排效果。\n"
|
||||
"标识符不会被误伤：foo_bar_baz、__init__、arr[i]、a_b_c 都保持原样。\n"
|
||||
"链接只高亮方括号：[官方文档](https://example.com/doc) 后面还有普通文字。\n"
|
||||
"图片保留原文：\n"
|
||||
"\n"
|
||||
"## 列表与引用\n"
|
||||
"\n"
|
||||
"- 减号列表项\n"
|
||||
"- 第二项\n"
|
||||
"* 星号也能当列表\n"
|
||||
"+ 加号也可以\n"
|
||||
"\n"
|
||||
"> 这是一段引用，前缀是暗色的竖线。\n"
|
||||
"> 引用可以有多行。\n"
|
||||
"\n"
|
||||
"---\n"
|
||||
"\n"
|
||||
"## 代码块（整块不渲染）\n"
|
||||
"\n"
|
||||
"```c\n"
|
||||
"#include <stdio.h>\n"
|
||||
"int main(void) {\n"
|
||||
" // **这里不会加粗**，[方括号] 也不会高亮\n"
|
||||
" printf(\"hello %s\\n\", \"world\");\n"
|
||||
" return 0;\n"
|
||||
"}\n"
|
||||
"```\n"
|
||||
"\n"
|
||||
"行内代码同理：`a ** b` 里的星号不会被当成粗体标记。\n"
|
||||
"\n"
|
||||
"## 表格\n"
|
||||
"\n"
|
||||
"| 语言 | 类型系统 | 典型用途 | 份额 |\n"
|
||||
"|:-----|:--------:|----------|-----:|\n"
|
||||
"| C | 静态弱类型 | 系统编程 | 11.4% |\n"
|
||||
"| Rust | 静态强类型 | 系统编程 | 3.2% |\n"
|
||||
"| Python | 动态强类型 | 脚本 / AI | 23.1% |\n"
|
||||
"\n"
|
||||
"| 单列表格 |\n"
|
||||
"|---|\n"
|
||||
"| 也能渲染 |\n"
|
||||
"\n"
|
||||
"## 边界情况\n"
|
||||
"\n"
|
||||
"乘法星号原样保留：2 * 3 * 4 = 24\n"
|
||||
"管道命令不会被误判成表格：ls -la | grep foo\n"
|
||||
"未闭合的 **粗体标记 会在行尾被复位\n"
|
||||
"#井号后没有空格就不是标题\n"
|
||||
"####### 七个井号也不是标题\n"
|
||||
"\n";
|
||||
|
||||
/* ------------------------------------------------------------------ */
|
||||
/* 渲染到内存（用于 --compare 自检） */
|
||||
/* ------------------------------------------------------------------ */
|
||||
|
||||
static char *render_to_mem(const char *src, int enabled, size_t chunk)
|
||||
{
|
||||
char *buf = NULL;
|
||||
size_t size = 0;
|
||||
FILE *f = open_memstream(&buf, &size);
|
||||
if (!f) return NULL;
|
||||
|
||||
MdRenderer *r = md_new(enabled);
|
||||
md_set_out(r, f);
|
||||
|
||||
if (chunk == 0) {
|
||||
md_feed(r, src);
|
||||
} else {
|
||||
size_t len = strlen(src);
|
||||
for (size_t i = 0; i < len; i += chunk) {
|
||||
size_t n = len - i < chunk ? len - i : chunk;
|
||||
char *tmp = xstrndup(src + i, n);
|
||||
md_feed(r, tmp);
|
||||
free(tmp);
|
||||
}
|
||||
}
|
||||
md_finish(r);
|
||||
md_free(r);
|
||||
fclose(f);
|
||||
return buf;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------ */
|
||||
/* 渲染到终端（可带分片与延时，模拟 SSE 流式） */
|
||||
/* ------------------------------------------------------------------ */
|
||||
|
||||
static void render_to_tty(const char *src, int enabled,
|
||||
size_t chunk, long delay_ms)
|
||||
{
|
||||
MdRenderer *r = md_new(enabled);
|
||||
md_set_out(r, stdout);
|
||||
|
||||
size_t len = strlen(src);
|
||||
if (chunk == 0) chunk = len ? len : 1;
|
||||
|
||||
struct timespec ts;
|
||||
ts.tv_sec = delay_ms / 1000;
|
||||
ts.tv_nsec = (delay_ms % 1000) * 1000000L;
|
||||
|
||||
for (size_t i = 0; i < len; i += chunk) {
|
||||
size_t n = len - i < chunk ? len - i : chunk;
|
||||
char *tmp = xstrndup(src + i, n);
|
||||
md_feed(r, tmp);
|
||||
free(tmp);
|
||||
fflush(stdout);
|
||||
if (delay_ms > 0) nanosleep(&ts, NULL);
|
||||
}
|
||||
md_finish(r);
|
||||
md_free(r);
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------ */
|
||||
/* 参数 */
|
||||
/* ------------------------------------------------------------------ */
|
||||
|
||||
static void usage(FILE *out)
|
||||
{
|
||||
fputs(
|
||||
"md_demo - 演示 ligent 的流式 Markdown 渲染效果\n"
|
||||
"\n"
|
||||
"用法： md_demo [选项] [文件...]\n"
|
||||
"\n"
|
||||
"不指定文件时使用内置示例；文件名为 - 或 stdin 不是终端时从标准输入读取。\n"
|
||||
"\n"
|
||||
"选项：\n"
|
||||
" -p, --plain 关闭渲染，输出原始 Markdown（对照用）\n"
|
||||
" --color 强制开启渲染（默认仅在输出到终端时开启）\n"
|
||||
" -c, --chunk N 按每 N 字节一片喂入（默认 0 = 一次性喂完）\n"
|
||||
" -d, --delay MS 每片之间延时毫秒（默认 0）\n"
|
||||
" -s, --stream 流式预设：等价于 -c 5 -d 12\n"
|
||||
" --compare 自检：把同一段文本按多种分片方式渲染，比对结果是否一致\n"
|
||||
" -h, --help 显示本帮助\n"
|
||||
"\n"
|
||||
"例子：\n"
|
||||
" md_demo 看渲染效果\n"
|
||||
" md_demo --plain 看原始 Markdown，对照差异\n"
|
||||
" md_demo -c 5 -d 12 模拟 SSE 流式（标记会被随机切断）\n"
|
||||
" md_demo --compare 验证分片不变性\n"
|
||||
" md_demo README.md 渲染任意 Markdown 文件\n"
|
||||
" echo '# hi **there**' | md_demo\n",
|
||||
out);
|
||||
}
|
||||
|
||||
static char *read_stream(FILE *f)
|
||||
{
|
||||
StrBuf sb;
|
||||
sb_init(&sb);
|
||||
char buf[8192];
|
||||
size_t n;
|
||||
while ((n = fread(buf, 1, sizeof buf, f)) > 0)
|
||||
sb_append(&sb, buf, n);
|
||||
return sb_detach(&sb);
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int plain = 0, force_color = 0, compare = 0;
|
||||
long delay_ms = 0;
|
||||
size_t chunk = 0;
|
||||
const char *file = NULL;
|
||||
|
||||
for (int i = 1; i < argc; i++) {
|
||||
const char *a = argv[i];
|
||||
if (strcmp(a, "-h") == 0 || strcmp(a, "--help") == 0) {
|
||||
usage(stdout);
|
||||
return 0;
|
||||
} else if (strcmp(a, "-p") == 0 || strcmp(a, "--plain") == 0) {
|
||||
plain = 1;
|
||||
} else if (strcmp(a, "--color") == 0) {
|
||||
force_color = 1;
|
||||
} else if (strcmp(a, "-c") == 0 || strcmp(a, "--chunk") == 0) {
|
||||
if (++i >= argc) { fputs("缺少 -c 的参数\n", stderr); return 2; }
|
||||
chunk = (size_t)strtoul(argv[i], NULL, 10);
|
||||
} else if (strcmp(a, "-d") == 0 || strcmp(a, "--delay") == 0) {
|
||||
if (++i >= argc) { fputs("缺少 -d 的参数\n", stderr); return 2; }
|
||||
delay_ms = strtol(argv[i], NULL, 10);
|
||||
} else if (strcmp(a, "-s") == 0 || strcmp(a, "--stream") == 0) {
|
||||
chunk = 5;
|
||||
delay_ms = 12;
|
||||
} else if (strcmp(a, "--compare") == 0) {
|
||||
compare = 1;
|
||||
} else if (a[0] == '-' && a[1] != '\0' && strcmp(a, "-") != 0) {
|
||||
fprintf(stderr, "未知选项 %s（--help 查看用法）\n", a);
|
||||
return 2;
|
||||
} else {
|
||||
file = a;
|
||||
}
|
||||
}
|
||||
|
||||
/* 取输入 */
|
||||
char *src = NULL;
|
||||
const char *source_name = "内置示例";
|
||||
if (file && strcmp(file, "-") != 0) {
|
||||
size_t len = 0;
|
||||
src = read_entire_file(file, &len);
|
||||
if (!src) {
|
||||
fprintf(stderr, "无法读取文件 %s\n", file);
|
||||
return 1;
|
||||
}
|
||||
source_name = file;
|
||||
} else if (file || !isatty(fileno(stdin))) {
|
||||
src = read_stream(stdin);
|
||||
source_name = "标准输入";
|
||||
if (src[0] == '\0') {
|
||||
/* stdin 是空管道（例如被 CI / make 调用）时退回内置示例 */
|
||||
free(src);
|
||||
src = xstrdup(SAMPLE);
|
||||
source_name = "内置示例（stdin 为空）";
|
||||
}
|
||||
} else {
|
||||
src = xstrdup(SAMPLE);
|
||||
}
|
||||
|
||||
int enabled = plain ? 0 : (force_color ? 1 : (isatty(fileno(stdout)) ? 1 : 0));
|
||||
|
||||
if (compare) {
|
||||
/* 分片不变性自检：不同分片大小必须得到完全相同的结果 */
|
||||
puts("分片不变性自检（同一段文本，不同分片方式，输出必须逐字节一致）");
|
||||
printf("输入：%s（%zu 字节）\n\n", source_name, strlen(src));
|
||||
|
||||
char *whole = render_to_mem(src, 1, 0);
|
||||
size_t sizes[] = { 1, 2, 3, 5, 7, 13, 64 };
|
||||
int all_ok = 1;
|
||||
for (size_t k = 0; k < sizeof sizes / sizeof sizes[0]; k++) {
|
||||
char *part = render_to_mem(src, 1, sizes[k]);
|
||||
int ok = part && whole && strcmp(whole, part) == 0;
|
||||
printf(" %-5zu 字节/片 %s\n", sizes[k], ok ? "一致 ✓" : "不一致 ✗");
|
||||
if (!ok) all_ok = 0;
|
||||
free(part);
|
||||
}
|
||||
/* 随机分片（模拟真实 SSE 的抖动） */
|
||||
srand(12345);
|
||||
char *buf = NULL;
|
||||
size_t bsize = 0;
|
||||
FILE *f = open_memstream(&buf, &bsize);
|
||||
MdRenderer *r = md_new(1);
|
||||
md_set_out(r, f);
|
||||
size_t len = strlen(src), i = 0;
|
||||
while (i < len) {
|
||||
size_t n = (size_t)(rand() % 11) + 1;
|
||||
if (i + n > len) n = len - i;
|
||||
char *tmp = xstrndup(src + i, n);
|
||||
md_feed(r, tmp);
|
||||
free(tmp);
|
||||
i += n;
|
||||
}
|
||||
md_finish(r);
|
||||
md_free(r);
|
||||
fclose(f);
|
||||
int ok = buf && whole && strcmp(whole, buf) == 0;
|
||||
printf(" %-5s %s\n", "随机", ok ? "一致 ✓" : "不一致 ✗");
|
||||
if (!ok) all_ok = 0;
|
||||
free(buf);
|
||||
free(whole);
|
||||
|
||||
printf("\n结论：%s\n", all_ok ? "全部一致，标记跨分片处理正确。"
|
||||
: "存在不一致，渲染器有 bug。");
|
||||
free(src);
|
||||
return all_ok ? 0 : 1;
|
||||
}
|
||||
|
||||
if (isatty(fileno(stdout))) {
|
||||
fprintf(stderr, "── 输入：%s 渲染：%s%s ──\n\n",
|
||||
source_name, enabled ? "开" : "关",
|
||||
chunk ? "（分片模式）" : "");
|
||||
}
|
||||
|
||||
render_to_tty(src, enabled, chunk, delay_ms);
|
||||
|
||||
if (isatty(fileno(stdout))) {
|
||||
fprintf(stderr, "\n── 演示结束 ──\n");
|
||||
if (enabled && chunk == 0)
|
||||
fprintf(stderr, "试试 `md_demo -s` 看流式分片下标记被切断时的表现，"
|
||||
"或 `md_demo -p` 对照原始 Markdown。\n");
|
||||
}
|
||||
|
||||
free(src);
|
||||
return 0;
|
||||
}
|
||||
Reference in new issue
Block a user