~kris/hacks

spod

1255761b9e55a8fd037245e41c880e3446130cc0 — Kris Yotam 4 months ago
initial commit: spod - static podcast page generator

stagit-style static site generator for podcast directories.
Reads a parent directory of podcasts, generates plain HTML
with Log, Episodes, README, and LICENSE pages per podcast.
8 files changed, 1103 insertions(+), 0 deletions(-)

A .gitignore
A LICENSE
A Makefile
A README.md
A config.def.h
A config.h
A spod.1
A spod.c
A  => .gitignore +2 -0
@@ 1,2 @@
spod
*.o

A  => LICENSE +21 -0
@@ 1,21 @@
MIT License

Copyright (c) 2026 Kris Yotam

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

A  => Makefile +43 -0
@@ 1,43 @@
NAME = spod
VERSION = 0.1

PREFIX = /usr/local
MANPREFIX = ${PREFIX}/share/man

CPPFLAGS = -DVERSION=\"${VERSION}\"
CFLAGS = -std=c99 -pedantic -Wall -Wextra -Os ${CPPFLAGS}

SRC = spod.c
OBJ = ${SRC:.c=.o}

all: ${NAME}

.c.o:
	${CC} -c ${CFLAGS} $<

${NAME}: ${OBJ}
	${CC} -o $@ ${OBJ} ${LDFLAGS}

clean:
	rm -f ${NAME} ${OBJ} ${NAME}-${VERSION}.tar.gz

dist: clean
	mkdir -p ${NAME}-${VERSION}
	cp -R LICENSE Makefile README config.def.h config.h \
		${SRC} ${NAME}-${VERSION}
	tar -czf ${NAME}-${VERSION}.tar.gz ${NAME}-${VERSION}
	rm -rf ${NAME}-${VERSION}

install: all
	mkdir -p ${DESTDIR}${PREFIX}/bin
	cp -f ${NAME} ${DESTDIR}${PREFIX}/bin
	chmod 755 ${DESTDIR}${PREFIX}/bin/${NAME}
	mkdir -p ${DESTDIR}${MANPREFIX}/man1
	cp -f ${NAME}.1 ${DESTDIR}${MANPREFIX}/man1
	chmod 644 ${DESTDIR}${MANPREFIX}/man1/${NAME}.1

uninstall:
	rm -f ${DESTDIR}${PREFIX}/bin/${NAME}
	rm -f ${DESTDIR}${MANPREFIX}/man1/${NAME}.1

.PHONY: all clean dist install uninstall

A  => README.md +83 -0
@@ 1,83 @@
# spod

Simple Podcast. A static podcast page generator in the style of [stagit](https://codemadness.org/stagit.html).

Point it at a directory of podcast folders. It generates plain HTML you can serve with any web server. No JavaScript, no database, no login, no dependencies beyond a C compiler.

## How it works

Each subdirectory under your podcast root is treated as one podcast. Inside each podcast directory:

- Audio and video files (`.mp3`, `.ogg`, `.opus`, `.m4a`, `.flac`, `.wav`, `.mp4`, `.mkv`, `.webm`)
- `README` or `README.md` or `README.txt` (optional, displayed on the readme page; first line is the heading, second line becomes the description on the index)
- `COVER.jpg` or `cover.png` or similar (optional, displayed on the log page)
- `LICENSE` or `COPYING` (optional, displayed on the license page)

### Example layout

```
podcasts/
  my-show/
    COVER.jpg
    README.md
    LICENSE
    001-first-episode.mp3
    002-second-episode.mp3
  another-show/
    cover.png
    README
    intro.ogg
    bonus.mp4
```

### Generated output

For each podcast, spod generates four pages (just like stagit generates log, files, refs):

- **log.html** -- episode list sorted newest-first with date and size (the default landing page)
- **episodes.html** -- file listing with permissions, filenames, and sizes
- **readme.html** -- the README rendered as preformatted text
- **license.html** -- the LICENSE rendered as preformatted text

The index page lists all podcasts with their name, description, owner, and last update date. Navigation between pages uses the same `Log | Episodes | README | LICENSE` bar that stagit uses for `Log | Files | Refs`.

Media files are symlinked into the output directory, not copied.

## Usage

```
$ spod podcasts/              # output to out/
$ spod podcasts/ /var/www     # output to /var/www
```

Serve the output with nginx, quark, or `python3 -m http.server`.

## Build

```
$ make
$ sudo make install
```

## Configuration

Copy `config.def.h` to `config.h` and edit before building:

```c
static char sitetitle[] = "podcasts";
static char sitedesc[]  = "my podcast collection";
static char siteowner[] = "kris";
static char favicon[]   = "";
```

## Design

- C99, POSIX.1-2008. No external libraries.
- Single file, around 600 lines.
- Produces a ~22KB static binary.
- Dark mode support via `prefers-color-scheme`.
- Same CSS and HTML structure as stagit. If you know what stagit looks like, you know what spod looks like.

## License

MIT

A  => config.def.h +6 -0
@@ 1,6 @@
/* spod configuration */

static char sitetitle[] = "podcasts";
static char sitedesc[]  = "";
static char siteowner[] = "";
static char favicon[]   = ""; /* path to favicon, empty to disable */

A  => config.h +6 -0
@@ 1,6 @@
/* spod configuration */

static char sitetitle[] = "podcasts";
static char sitedesc[]  = "";
static char siteowner[] = "";
static char favicon[]   = ""; /* path to favicon, empty to disable */

A  => spod.1 +58 -0
@@ 1,58 @@
.Dd 2026-04-29
.Dt SPOD 1
.Os
.Sh NAME
.Nm spod
.Nd static podcast page generator
.Sh SYNOPSIS
.Nm
.Ar podcastdir
.Op Ar outputdir
.Sh DESCRIPTION
.Nm
generates static HTML pages for podcasts, similar to
.Xr stagit 1
for git repositories.
.Pp
.Ar podcastdir
is a parent directory containing one subdirectory per podcast.
Each podcast directory should contain:
.Bl -bullet
.It
Audio files (.mp3, .ogg, .opus, .m4a, .flac, .wav)
.It
A README, README.md, or README.txt file (optional)
.It
A cover image named COVER.* or cover.* (optional)
.El
.Pp
If
.Ar outputdir
is not specified, output is written to
.Pa out/
in the current directory.
.Sh EXAMPLE LAYOUT
.Bd -literal
podcasts/
  my-show/
    COVER.jpg
    README.md
    001-first-episode.mp3
    002-second-episode.mp3
  another-show/
    cover.png
    README
    intro.ogg
.Ed
.Pp
Running
.Nm
.Pa podcasts/
generates a static site with an index page listing all shows
and per-show pages with episode tables, cover art, and descriptions.
.Pp
Audio files are symlinked into the output directory, not copied.
.Sh SEE ALSO
.Xr stagit 1
.Sh AUTHORS
Kris Yotam

A  => spod.c +884 -0
@@ 1,884 @@
/* spod - static podcast page generator */
/* like stagit, but for podcasts */

#define _XOPEN_SOURCE 700

#include <sys/stat.h>
#include <sys/types.h>

#include <dirent.h>
#include <errno.h>
#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <time.h>
#include <unistd.h>

#include "config.h"

#define LEN(s) (sizeof(s)/sizeof(*(s)))

struct episode {
	char   name[PATH_MAX];    /* filename without extension */
	char   path[PATH_MAX];    /* relative path to file */
	off_t  size;              /* file size in bytes */
	time_t mtime;             /* modification time */
};

struct podcast {
	char           name[PATH_MAX];
	char           dir[PATH_MAX];
	char           desc[4096];       /* description (2nd line+ of README) */
	char           readme[65536];
	char           license[65536];
	char           cover[PATH_MAX];  /* relative path to cover image */
	char           coverext[16];     /* image extension */
	int            hasreadme;
	int            haslicense;
	struct episode *eps;
	size_t         neps;
	size_t         capsz;
};

static char outdir[PATH_MAX];

static void
die(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	vfprintf(stderr, fmt, ap);
	va_end(ap);
	fputc('\n', stderr);
	exit(1);
}

static void
checkfileerror(FILE *fp, const char *name, int mode)
{
	if (mode == 'r' && ferror(fp))
		die("read error: %s", name);
	else if (mode == 'w' && (fflush(fp) || ferror(fp)))
		die("write error: %s", name);
}

static void
xmlencode(FILE *fp, const char *s)
{
	for (; *s; s++) {
		switch (*s) {
		case '<':  fputs("&lt;",   fp); break;
		case '>':  fputs("&gt;",   fp); break;
		case '\'': fputs("&#39;",  fp); break;
		case '&':  fputs("&amp;",  fp); break;
		case '"':  fputs("&quot;", fp); break;
		default:   fputc(*s, fp);
		}
	}
}

static const char *
humansize(off_t bytes)
{
	static char buf[32];
	double s = bytes;

	if (s < 1024.0)
		snprintf(buf, sizeof(buf), "%.0fB", s);
	else if (s < 1048576.0)
		snprintf(buf, sizeof(buf), "%.1fKB", s / 1024.0);
	else if (s < 1073741824.0)
		snprintf(buf, sizeof(buf), "%.1fMB", s / 1048576.0);
	else
		snprintf(buf, sizeof(buf), "%.1fGB", s / 1073741824.0);

	return buf;
}

static void
formattime(char *buf, size_t bufsz, time_t t)
{
	struct tm *tm;

	tm = localtime(&t);
	if (tm)
		strftime(buf, bufsz, "%Y-%m-%d %H:%M", tm);
	else
		buf[0] = '\0';
}

static void
formattimeshort(char *buf, size_t bufsz, time_t t)
{
	struct tm *tm;

	tm = localtime(&t);
	if (tm)
		strftime(buf, bufsz, "%Y-%m-%d", tm);
	else
		buf[0] = '\0';
}

static int
mkdirp(const char *path)
{
	char tmp[PATH_MAX];
	char *p;
	size_t len;

	snprintf(tmp, sizeof(tmp), "%s", path);
	len = strlen(tmp);
	if (len > 0 && tmp[len - 1] == '/')
		tmp[len - 1] = '\0';

	for (p = tmp + 1; *p; p++) {
		if (*p == '/') {
			*p = '\0';
			if (mkdir(tmp, 0755) < 0 && errno != EEXIST)
				return -1;
			*p = '/';
		}
	}
	if (mkdir(tmp, 0755) < 0 && errno != EEXIST)
		return -1;

	return 0;
}

static int
isimgext(const char *ext)
{
	return (!strcmp(ext, ".jpg") || !strcmp(ext, ".jpeg") ||
	        !strcmp(ext, ".png") || !strcmp(ext, ".gif") ||
	        !strcmp(ext, ".webp") || !strcmp(ext, ".svg") ||
	        !strcmp(ext, ".bmp") || !strcmp(ext, ".ico"));
}

static int
ismediaext(const char *ext)
{
	return (!strcmp(ext, ".mp3") || !strcmp(ext, ".ogg") ||
	        !strcmp(ext, ".opus") || !strcmp(ext, ".m4a") ||
	        !strcmp(ext, ".flac") || !strcmp(ext, ".wav") ||
	        !strcmp(ext, ".mp4") || !strcmp(ext, ".mkv") ||
	        !strcmp(ext, ".webm"));
}

static int
epcmp(const void *a, const void *b)
{
	const struct episode *ea = a, *eb = b;

	/* newest first */
	if (ea->mtime > eb->mtime)
		return -1;
	if (ea->mtime < eb->mtime)
		return 1;
	return strcmp(ea->name, eb->name);
}

static void
ep_add(struct podcast *p, const char *fname, const char *relpath,
       off_t size, time_t mtime)
{
	char *dot;

	if (p->neps >= p->capsz) {
		p->capsz = p->capsz ? p->capsz * 2 : 16;
		p->eps = realloc(p->eps, p->capsz * sizeof(*p->eps));
		if (!p->eps)
			die("realloc");
	}
	snprintf(p->eps[p->neps].path, sizeof(p->eps[p->neps].path),
	         "%s", relpath);
	snprintf(p->eps[p->neps].name, sizeof(p->eps[p->neps].name),
	         "%s", fname);
	dot = strrchr(p->eps[p->neps].name, '.');
	if (dot)
		*dot = '\0';
	p->eps[p->neps].size = size;
	p->eps[p->neps].mtime = mtime;
	p->neps++;
}

static void
readfile(const char *path, char *buf, size_t bufsz)
{
	FILE *fp;
	size_t n;

	fp = fopen(path, "r");
	if (!fp) {
		buf[0] = '\0';
		return;
	}
	n = fread(buf, 1, bufsz - 1, fp);
	buf[n] = '\0';
	fclose(fp);
}

/* extract description: skip first line (heading), take rest */
static void
extractdesc(const char *readme, char *desc, size_t descsz)
{
	const char *p;

	desc[0] = '\0';
	if (!readme[0])
		return;

	/* skip first line */
	p = strchr(readme, '\n');
	if (!p || !*(p + 1))
		return;
	p++;

	/* skip blank lines after heading */
	while (*p == '\n' || *p == '\r')
		p++;

	if (!*p)
		return;

	snprintf(desc, descsz, "%s", p);

	/* truncate at first newline for index use */
	{
		char *nl = strchr(desc, '\n');
		if (nl)
			*nl = '\0';
	}
}

static void
podcast_scan(struct podcast *p, const char *dir)
{
	DIR *dp;
	struct dirent *de;
	struct stat st;
	char path[PATH_MAX], *ext;

	snprintf(p->dir, sizeof(p->dir), "%s", dir);

	/* extract podcast name from directory basename */
	{
		const char *base = strrchr(dir, '/');
		base = base ? base + 1 : dir;
		snprintf(p->name, sizeof(p->name), "%s", base);
	}

	dp = opendir(dir);
	if (!dp)
		die("opendir: %s: %s", dir, strerror(errno));

	p->readme[0] = '\0';
	p->license[0] = '\0';
	p->desc[0] = '\0';
	p->cover[0] = '\0';
	p->coverext[0] = '\0';
	p->hasreadme = 0;
	p->haslicense = 0;
	p->eps = NULL;
	p->neps = 0;
	p->capsz = 0;

	while ((de = readdir(dp))) {
		if (de->d_name[0] == '.')
			continue;

		snprintf(path, sizeof(path), "%s/%s", dir, de->d_name);
		if (stat(path, &st) < 0)
			continue;
		if (!S_ISREG(st.st_mode))
			continue;

		/* README */
		if (!strcmp(de->d_name, "README") ||
		    !strcmp(de->d_name, "README.md") ||
		    !strcmp(de->d_name, "README.txt")) {
			readfile(path, p->readme, sizeof(p->readme));
			p->hasreadme = 1;
			extractdesc(p->readme, p->desc, sizeof(p->desc));
			continue;
		}

		/* LICENSE */
		if (!strcmp(de->d_name, "LICENSE") ||
		    !strcmp(de->d_name, "LICENSE.md") ||
		    !strcmp(de->d_name, "LICENSE.txt") ||
		    !strcmp(de->d_name, "COPYING")) {
			readfile(path, p->license, sizeof(p->license));
			p->haslicense = 1;
			continue;
		}

		ext = strrchr(de->d_name, '.');
		if (!ext)
			continue;

		/* cover image */
		if (isimgext(ext) &&
		    (!strncasecmp(de->d_name, "COVER", 5) ||
		     !strncasecmp(de->d_name, "cover", 5) ||
		     !strncasecmp(de->d_name, "artwork", 7) ||
		     !strncasecmp(de->d_name, "poster", 6) ||
		     !strncasecmp(de->d_name, "logo", 4))) {
			snprintf(p->cover, sizeof(p->cover), "%s", de->d_name);
			snprintf(p->coverext, sizeof(p->coverext), "%s", ext);
			continue;
		}

		/* media files (audio + video) */
		if (ismediaext(ext))
			ep_add(p, de->d_name, de->d_name, st.st_size,
			       st.st_mtime);
	}

	closedir(dp);
	qsort(p->eps, p->neps, sizeof(*p->eps), epcmp);
}

/* write header exactly like stagit */
static void
writeheader(FILE *fp, const struct podcast *p, const char *page)
{
	fputs("<!DOCTYPE html>\n<html>\n<head>\n"
	      "<meta http-equiv=\"Content-Type\""
	      " content=\"text/html; charset=UTF-8\" />\n"
	      "<meta name=\"viewport\""
	      " content=\"width=device-width, initial-scale=1\" />\n"
	      "<title>", fp);
	xmlencode(fp, p->name);
	if (p->desc[0]) {
		fputs(" - ", fp);
		xmlencode(fp, p->desc);
	}
	fputs("</title>\n"
	      "<link rel=\"stylesheet\" type=\"text/css\""
	      " href=\"style.css\" />\n"
	      "</head>\n<body>\n", fp);

	/* top bar: logo + name + desc */
	fputs("<table><tr><td>", fp);
	if (favicon[0]) {
		fputs("<a href=\"../index.html\">"
		      "<img src=\"", fp);
		xmlencode(fp, favicon);
		fputs("\" alt=\"\" width=\"32\" height=\"32\" />"
		      "</a>", fp);
	}
	fputs("</td><td><h1>", fp);
	xmlencode(fp, p->name);
	fputs("</h1><span class=\"desc\">", fp);
	xmlencode(fp, p->desc);
	fputs("</span></td></tr><tr><td></td><td>\n", fp);

	/* nav links: Log | Episodes | README | LICENSE */
	fputs("<a href=\"log.html\">Log</a> | \n", fp);
	fputs("<a href=\"episodes.html\">Episodes</a>", fp);
	if (p->hasreadme)
		fputs(" | \n<a href=\"readme.html\">README</a>", fp);
	if (p->haslicense)
		fputs(" | \n<a href=\"license.html\">LICENSE</a>", fp);

	fputs("\n</td></tr></table>\n<hr/>\n<div id=\"content\">\n", fp);

	(void)page;
}

static void
writefooter(FILE *fp)
{
	fputs("</div>\n</body>\n</html>\n", fp);
}

/* index page: like stagit-index */
static void
writeindexheader(FILE *fp)
{
	fputs("<!DOCTYPE html>\n<html>\n<head>\n"
	      "<meta http-equiv=\"Content-Type\""
	      " content=\"text/html; charset=UTF-8\" />\n"
	      "<meta name=\"viewport\""
	      " content=\"width=device-width, initial-scale=1\" />\n"
	      "<title>", fp);
	xmlencode(fp, sitetitle);
	fputs("</title>\n"
	      "<link rel=\"stylesheet\" type=\"text/css\""
	      " href=\"style.css\" />\n"
	      "</head>\n<body>\n", fp);

	fputs("<table><tr><td>", fp);
	if (favicon[0]) {
		fputs("<img src=\"", fp);
		xmlencode(fp, favicon);
		fputs("\" alt=\"\" width=\"32\" height=\"32\" />", fp);
	}
	fputs("</td><td><span class=\"desc\">", fp);
	xmlencode(fp, sitetitle);
	if (sitedesc[0]) {
		fputs(" - ", fp);
		xmlencode(fp, sitedesc);
	}
	fputs("</span></td></tr>\n"
	      "<tr><td></td><td></td></tr>\n"
	      "</table>\n<hr/>\n<div id=\"content\">\n", fp);
}

static void
writeindex(struct podcast *pods, size_t npods)
{
	FILE *fp;
	char path[PATH_MAX], timebuf[64];
	size_t i;
	time_t latest;

	snprintf(path, sizeof(path), "%s/index.html", outdir);
	fp = fopen(path, "w");
	if (!fp)
		die("fopen: %s: %s", path, strerror(errno));

	writeindexheader(fp);

	fputs("<table id=\"index\"><thead>\n<tr>"
	      "<td><b>Name</b></td>"
	      "<td><b>Description</b></td>"
	      "<td><b>Owner</b></td>"
	      "<td><b>Last commit</b></td>"
	      "</tr>\n</thead><tbody>\n", fp);

	for (i = 0; i < npods; i++) {
		latest = 0;
		if (pods[i].neps > 0)
			latest = pods[i].eps[0].mtime;

		formattimeshort(timebuf, sizeof(timebuf), latest);

		fputs("<tr><td><a href=\"", fp);
		xmlencode(fp, pods[i].name);
		fputs("/log.html\">", fp);
		xmlencode(fp, pods[i].name);
		fputs("</a></td><td>", fp);
		xmlencode(fp, pods[i].desc);
		fputs("</td><td>", fp);
		if (siteowner[0])
			xmlencode(fp, siteowner);
		fputs("</td><td>", fp);
		if (latest)
			xmlencode(fp, timebuf);
		fputs("</td></tr>\n", fp);
	}

	fputs("</tbody>\n</table>\n", fp);
	writefooter(fp);
	checkfileerror(fp, path, 'w');
	fclose(fp);
}

static void
copyfile(const char *src, const char *dst)
{
	FILE *in, *out;
	char buf[8192];
	size_t n;

	in = fopen(src, "rb");
	if (!in)
		return;

	out = fopen(dst, "wb");
	if (!out) {
		fclose(in);
		return;
	}

	while ((n = fread(buf, 1, sizeof(buf), in)) > 0)
		fwrite(buf, 1, n, out);

	fclose(in);
	fclose(out);
}

/* log.html — like stagit's log page */
static void
writelog(const struct podcast *p, const char *poddir)
{
	FILE *fp;
	char path[PATH_MAX], timebuf[64];
	size_t i;

	snprintf(path, sizeof(path), "%s/log.html", poddir);
	fp = fopen(path, "w");
	if (!fp)
		die("fopen: %s: %s", path, strerror(errno));

	writeheader(fp, p, "log");

	/* cover image at top */
	if (p->cover[0]) {
		fputs("<div id=\"cover\">\n<img src=\"", fp);
		xmlencode(fp, p->cover);
		fputs("\" alt=\"cover\" />\n</div>\n", fp);
	}

	fputs("<table id=\"log\"><thead>\n<tr>"
	      "<td><b>Date</b></td>"
	      "<td><b>Episode</b></td>"
	      "<td class=\"num\" align=\"right\"><b>Size</b></td>"
	      "</tr>\n</thead><tbody>\n", fp);

	for (i = 0; i < p->neps; i++) {
		formattime(timebuf, sizeof(timebuf), p->eps[i].mtime);
		fputs("<tr><td>", fp);
		xmlencode(fp, timebuf);
		fputs("</td><td><a href=\"", fp);
		xmlencode(fp, p->eps[i].path);
		fputs("\">", fp);
		xmlencode(fp, p->eps[i].name);
		fputs("</a></td><td class=\"num\" align=\"right\">", fp);
		fputs(humansize(p->eps[i].size), fp);
		fputs("</td></tr>\n", fp);
	}

	fputs("</tbody>\n</table>\n", fp);
	writefooter(fp);
	checkfileerror(fp, path, 'w');
	fclose(fp);
}

/* episodes.html — like stagit's files page */
static void
writeepisodes(const struct podcast *p, const char *poddir)
{
	FILE *fp;
	char path[PATH_MAX], timebuf[64];
	size_t i;

	snprintf(path, sizeof(path), "%s/episodes.html", poddir);
	fp = fopen(path, "w");
	if (!fp)
		die("fopen: %s: %s", path, strerror(errno));

	writeheader(fp, p, "episodes");

	fputs("<table id=\"files\"><thead>\n<tr>"
	      "<td><b>Mode</b></td>"
	      "<td><b>Name</b></td>"
	      "<td class=\"num\" align=\"right\"><b>Size</b></td>"
	      "</tr>\n</thead><tbody>\n", fp);

	for (i = 0; i < p->neps; i++) {
		formattime(timebuf, sizeof(timebuf), p->eps[i].mtime);
		fputs("<tr><td>-rw-r--r--</td><td><a href=\"", fp);
		xmlencode(fp, p->eps[i].path);
		fputs("\">", fp);
		xmlencode(fp, p->eps[i].path);
		fputs("</a></td><td class=\"num\" align=\"right\">", fp);
		fputs(humansize(p->eps[i].size), fp);
		fputs("</td></tr>\n", fp);
	}

	/* also list README and LICENSE as files */
	if (p->hasreadme) {
		fputs("<tr><td>-rw-r--r--</td>"
		      "<td><a href=\"readme.html\">README</a></td>"
		      "<td class=\"num\" align=\"right\"></td></tr>\n", fp);
	}
	if (p->haslicense) {
		fputs("<tr><td>-rw-r--r--</td>"
		      "<td><a href=\"license.html\">LICENSE</a></td>"
		      "<td class=\"num\" align=\"right\"></td></tr>\n", fp);
	}
	if (p->cover[0]) {
		fputs("<tr><td>-rw-r--r--</td><td>", fp);
		xmlencode(fp, p->cover);
		fputs("</td><td class=\"num\" align=\"right\"></td>"
		      "</tr>\n", fp);
	}

	fputs("</tbody>\n</table>\n", fp);
	writefooter(fp);
	checkfileerror(fp, path, 'w');
	fclose(fp);
}

/* readme.html */
static void
writereadme(const struct podcast *p, const char *poddir)
{
	FILE *fp;
	char path[PATH_MAX];

	if (!p->hasreadme)
		return;

	snprintf(path, sizeof(path), "%s/readme.html", poddir);
	fp = fopen(path, "w");
	if (!fp)
		die("fopen: %s: %s", path, strerror(errno));

	writeheader(fp, p, "readme");
	fputs("<pre id=\"readme\">", fp);
	xmlencode(fp, p->readme);
	fputs("</pre>\n", fp);
	writefooter(fp);
	checkfileerror(fp, path, 'w');
	fclose(fp);
}

/* license.html */
static void
writelicense(const struct podcast *p, const char *poddir)
{
	FILE *fp;
	char path[PATH_MAX];

	if (!p->haslicense)
		return;

	snprintf(path, sizeof(path), "%s/license.html", poddir);
	fp = fopen(path, "w");
	if (!fp)
		die("fopen: %s: %s", path, strerror(errno));

	writeheader(fp, p, "license");
	fputs("<pre id=\"license\">", fp);
	xmlencode(fp, p->license);
	fputs("</pre>\n", fp);
	writefooter(fp);
	checkfileerror(fp, path, 'w');
	fclose(fp);
}

static void
writepodcast(const struct podcast *p)
{
	char poddir[PATH_MAX];
	size_t i;

	snprintf(poddir, sizeof(poddir), "%s/%s", outdir, p->name);
	if (mkdirp(poddir) < 0)
		die("mkdirp: %s: %s", poddir, strerror(errno));

	/* symlink media files instead of copying */
	for (i = 0; i < p->neps; i++) {
		char src[PATH_MAX], dst[PATH_MAX], abssrc[PATH_MAX];

		snprintf(src, sizeof(src), "%s/%s",
		         p->dir, p->eps[i].path);
		snprintf(dst, sizeof(dst), "%s/%s",
		         poddir, p->eps[i].path);

		if (!realpath(src, abssrc))
			die("realpath: %s: %s", src, strerror(errno));

		unlink(dst);
		if (symlink(abssrc, dst) < 0)
			die("symlink: %s -> %s: %s", dst, abssrc,
			    strerror(errno));
	}

	/* copy cover image */
	if (p->cover[0]) {
		char src[PATH_MAX], dst[PATH_MAX];
		snprintf(src, sizeof(src), "%s/%s", p->dir, p->cover);
		snprintf(dst, sizeof(dst), "%s/%s", poddir, p->cover);
		copyfile(src, dst);
	}

	/* generate pages */
	writelog(p, poddir);
	writeepisodes(p, poddir);
	writereadme(p, poddir);
	writelicense(p, poddir);
}

static void
writestyle(void)
{
	FILE *fp;
	char path[PATH_MAX];

	snprintf(path, sizeof(path), "%s/style.css", outdir);
	fp = fopen(path, "w");
	if (!fp)
		die("fopen: %s: %s", path, strerror(errno));

	fputs(
	"body {\n"
	"\tcolor: #000;\n"
	"\tbackground-color: #fff;\n"
	"\tfont-family: monospace;\n"
	"}\n"
	"h1, h2, h3, h4, h5, h6 {\n"
	"\tfont-size: 1em;\n"
	"\tmargin: 0;\n"
	"}\n"
	"img, h1, h2 {\n"
	"\tvertical-align: middle;\n"
	"}\n"
	"img {\n"
	"\tborder: 0;\n"
	"}\n"
	"#cover img {\n"
	"\tmax-width: 200px;\n"
	"\tmax-height: 200px;\n"
	"\tmargin: 0.5em 0;\n"
	"}\n"
	"a {\n"
	"\tcolor: #00e;\n"
	"\ttext-decoration: none;\n"
	"}\n"
	"a:hover {\n"
	"\ttext-decoration: underline;\n"
	"}\n"
	"table thead td {\n"
	"\tfont-weight: bold;\n"
	"}\n"
	"table td {\n"
	"\tpadding: 0 0.4em;\n"
	"}\n"
	"#content table td {\n"
	"\tvertical-align: top;\n"
	"\twhite-space: nowrap;\n"
	"}\n"
	"#index tr:hover td,\n"
	"#log tr:hover td,\n"
	"#files tr:hover td {\n"
	"\tbackground-color: #eee;\n"
	"}\n"
	"#index tr td:nth-child(2),\n"
	"#log tr td:nth-child(2) {\n"
	"\twhite-space: normal;\n"
	"}\n"
	"td.num {\n"
	"\ttext-align: right;\n"
	"}\n"
	".desc {\n"
	"\tcolor: #555;\n"
	"}\n"
	"hr {\n"
	"\tborder: 0;\n"
	"\tborder-top: 1px solid #555;\n"
	"\theight: 1px;\n"
	"}\n"
	"pre {\n"
	"\tfont-family: monospace;\n"
	"}\n"
	"pre#readme,\n"
	"pre#license {\n"
	"\twhite-space: pre-wrap;\n"
	"\tword-wrap: break-word;\n"
	"\tline-height: 1.5;\n"
	"}\n"
	"@media (prefers-color-scheme: dark) {\n"
	"\tbody {\n"
	"\t\tbackground-color: #000;\n"
	"\t\tcolor: #bdbdbd;\n"
	"\t}\n"
	"\thr {\n"
	"\t\tborder-color: #222;\n"
	"\t}\n"
	"\ta {\n"
	"\t\tcolor: #56c8ff;\n"
	"\t}\n"
	"\t.desc {\n"
	"\t\tcolor: #aaa;\n"
	"\t}\n"
	"\t#index tr:hover td,\n"
	"\t#log tr:hover td,\n"
	"\t#files tr:hover td {\n"
	"\t\tbackground-color: #111;\n"
	"\t}\n"
	"}\n", fp);

	checkfileerror(fp, path, 'w');
	fclose(fp);
}

static int
podcmp(const void *a, const void *b)
{
	const struct podcast *pa = a, *pb = b;

	return strcmp(pa->name, pb->name);
}

int
main(int argc, char *argv[])
{
	DIR *dp;
	struct dirent *de;
	struct stat st;
	struct podcast *pods;
	size_t npods, capsz;
	char path[PATH_MAX];

	if (argc < 2 || argc > 3) {
		fprintf(stderr, "usage: %s <podcastdir> [outputdir]\n",
		        argv[0]);
		return 1;
	}

	if (argc == 3)
		snprintf(outdir, sizeof(outdir), "%s", argv[2]);
	else
		snprintf(outdir, sizeof(outdir), "out");

	if (mkdirp(outdir) < 0)
		die("mkdirp: %s: %s", outdir, strerror(errno));

	dp = opendir(argv[1]);
	if (!dp)
		die("opendir: %s: %s", argv[1], strerror(errno));

	pods = NULL;
	npods = 0;
	capsz = 0;

	while ((de = readdir(dp))) {
		if (de->d_name[0] == '.')
			continue;

		snprintf(path, sizeof(path), "%s/%s", argv[1], de->d_name);
		if (stat(path, &st) < 0)
			continue;
		if (!S_ISDIR(st.st_mode))
			continue;

		if (npods >= capsz) {
			capsz = capsz ? capsz * 2 : 8;
			pods = realloc(pods, capsz * sizeof(*pods));
			if (!pods)
				die("realloc");
		}

		podcast_scan(&pods[npods], path);
		npods++;
	}

	closedir(dp);

	if (npods == 0)
		die("no podcast directories found in %s", argv[1]);

	qsort(pods, npods, sizeof(*pods), podcmp);

	/* generate output */
	writestyle();
	writeindex(pods, npods);

	for (size_t i = 0; i < npods; i++)
		writepodcast(&pods[i]);

	/* cleanup */
	for (size_t i = 0; i < npods; i++)
		free(pods[i].eps);
	free(pods);

	return 0;
}