Rename src/gistatic.* src/lib.*

1 files changed, 0 insertions, 2181 deletions

diff --git a/src/gistatic.c b/src/gistatic.c
deleted file mode 100644
index 8f067b7..0000000
--- a/src/gistatic.c
+++ /dev/null
@@ -1,2181 +0,0 @@
-#include "config.h"
-#include "tar.h"
-#include "gistatic.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <stdbool.h>
-#include <libgen.h>
-#include <string.h>
-#include <assert.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <nl_types.h>
-#include <locale.h>
-
-#include <git2.h>
-
-
-#ifdef TEST
-#include "tests-lib.h"
-#endif
-
-
-static const int EXIT_ERROR = 1;
-static const int EXIT_USAGE = 2;
-
-
-#define PROGNAME "gistatic"
-static const char *const CATALOG_NAME = PROGNAME;
-static nl_catd catalog_descriptor = NULL;
-
-#define MSG_DEFAULT_TITLE        1
-#define MSG_LOGO_ALT_INDEX       2
-#define MSG_LOGO_ALT_REPOSITORY  3
-#define MSG_FOOTER_TEMPLATE      4
-#define MSG_LANG                 5
-#define MSG_NAME                 6
-#define MSG_DESCRIPTION          7
-#define MSG_LAST_COMMIT          8
-#define MSG_USAGE                9
-#define MSG_HELP                 10
-#define MSG_COMMIT_FEED          11
-#define MSG_TAGS_FEED            12
-#define MSG_NAV_FILES            13
-#define MSG_NAV_LOG              14
-#define MSG_NAV_REFS             15
-#define MSG_THEAD_BRANCH         16
-#define MSG_THEAD_COMMITMSG      17
-#define MSG_THEAD_AUTHOR         18
-#define MSG_THEAD_DATE           19
-#define MSG_THEAD_TAG            20
-#define MSG_MISSING_URL          21
-#define MSG_MISSING_ARGS         22
-#define MSG_INCOMPATIBLE_OPTIONS 23
-#define MSG_INDEX_DESCRIPTION    24
-
-static const char *const MSGS[] = {
-	"",
-	[MSG_DEFAULT_TITLE]="Repositories",
-	[MSG_LOGO_ALT_INDEX]="Logo image of the repository list",
-	[MSG_LOGO_ALT_REPOSITORY]="Logo image of the repository",
-	[MSG_FOOTER_TEMPLATE]="Generated with %s",
-	[MSG_LANG]="en",
-	[MSG_NAME]="Name",
-	[MSG_DESCRIPTION]="Description",
-	[MSG_LAST_COMMIT]="Last commit",
-	[MSG_USAGE]=""
-		"Usage:\n"
-		"  " PROGNAME " -i -o DIRECTORY REPOSITORY...\n"
-		"  " PROGNAME "    -o DIRECTORY -u CLONE_URL REPOSITORY\n"
-		"  " PROGNAME " [-hV]\n"
-		"",
-	[MSG_HELP]=""
-		"\n"
-		"Options:\n"
-		"  -i             build the index page of the repositories\n"
-		"  -u CLONE_URL   address to be shown alongside \"git clone\"\n"
-		"  -o DIRECTORY   output where to place the generated files\n"
-		"  -h, --help     show this help\n"
-		"  -V, --version  print the version number\n"
-		"\n"
-		"See \"man gistatic\" for more information.\n"
-		"",
-	[MSG_COMMIT_FEED]="commit feed",
-	[MSG_TAGS_FEED]="tags feed",
-	[MSG_NAV_FILES]="files",
-	[MSG_NAV_LOG]="log",
-	[MSG_NAV_REFS]="refs",
-	[MSG_THEAD_BRANCH]="Branch",
-	[MSG_THEAD_COMMITMSG]="Commit message",
-	[MSG_THEAD_AUTHOR]="Author",
-	[MSG_THEAD_DATE]="Date",
-	[MSG_THEAD_TAG]="Tag",
-	[MSG_MISSING_URL]="Missing '-u CLONE_URL'",
-	[MSG_MISSING_ARGS]="Missing [PATH | [PATHS]]",
-	[MSG_INCOMPATIBLE_OPTIONS]="Incompatible options -u and -i",
-	[MSG_INDEX_DESCRIPTION]="Index of repositories",
-	NULL
-};
-
-#ifdef TEST
-static void dump_translatable_strings(void) {
-	const size_t size =
-		strlen(__FILE__) - strlen(".c") + strlen(".msg") + sizeof('\0');
-	char *const catalog_path = malloc(size);
-	assert(catalog_path);
-
-	strcpy(catalog_path, __FILE__);
-	catalog_path[strlen(__FILE__) - strlen(".c")] = '\0';
-	strcat(catalog_path, ".msg");
-
-	FILE *const f = fopen(catalog_path, "w");
-	assert(f);
-	for (size_t i = 1; MSGS[i] != NULL; i++) {
-		assert(fprintf(f, "%ld %s\n\n", i, MSGS[i]) > 0);
-	}
-
-	assert(fclose(f) == 0);
-	free(catalog_path);
-}
-#endif
-
-static const char *const LOGO_STR = ""
-	"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n"
-	"<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 16 16\" width=\"16\" height=\"16\">\n"
-	"  <path d=\"M 0  8  L 1  8  L 1  9  L 0  9  L 0  8  Z\" />\n"
-	"  <path d=\"M 0  13 L 1  13 L 1  14 L 0  14 L 0  13 Z\" />\n"
-	"  <path d=\"M 1  8  L 2  8  L 2  9  L 1  9  L 1  8  Z\" />\n"
-	"  <path d=\"M 1  13 L 2  13 L 2  14 L 1  14 L 1  13 Z\" />\n"
-	"  <path d=\"M 2  8  L 3  8  L 3  9  L 2  9  L 2  8  Z\" />\n"
-	"  <path d=\"M 2  13 L 3  13 L 3  14 L 2  14 L 2  13 Z\" />\n"
-	"  <path d=\"M 3  8  L 4  8  L 4  9  L 3  9  L 3  8  Z\" />\n"
-	"  <path d=\"M 3  13 L 4  13 L 4  14 L 3  14 L 3  13 Z\" />\n"
-	"  <path d=\"M 4  7  L 5  7  L 5  8  L 4  8  L 4  7  Z\" />\n"
-	"  <path d=\"M 4  8  L 5  8  L 5  9  L 4  9  L 4  8  Z\" />\n"
-	"  <path d=\"M 4  13 L 5  13 L 5  14 L 4  14 L 4  13 Z\" />\n"
-	"  <path d=\"M 5  6  L 6  6  L 6  7  L 5  7  L 5  6  Z\" />\n"
-	"  <path d=\"M 5  7  L 6  7  L 6  8  L 5  8  L 5  7  Z\" />\n"
-	"  <path d=\"M 5  13 L 6  13 L 6  14 L 5  14 L 5  13 Z\" />\n"
-	"  <path d=\"M 6  5  L 7  5  L 7  6  L 6  6  L 6  5  Z\" />\n"
-	"  <path d=\"M 6  6  L 7  6  L 7  7  L 6  7  L 6  6  Z\" />\n"
-	"  <path d=\"M 6  14 L 7  14 L 7  15 L 6  15 L 6  14 Z\" />\n"
-	"  <path d=\"M 7  1  L 8  1  L 8  2  L 7  2  L 7  1  Z\" />\n"
-	"  <path d=\"M 7  14 L 8  14 L 8  15 L 7  15 L 7  14 Z\" />\n"
-	"  <path d=\"M 7  15 L 8  15 L 8  16 L 7  16 L 7  15 Z\" />\n"
-	"  <path d=\"M 7  2  L 8  2  L 8  3  L 7  3  L 7  2  Z\" />\n"
-	"  <path d=\"M 7  3  L 8  3  L 8  4  L 7  4  L 7  3  Z\" />\n"
-	"  <path d=\"M 7  4  L 8  4  L 8  5  L 7  5  L 7  4  Z\" />\n"
-	"  <path d=\"M 7  5  L 8  5  L 8  6  L 7  6  L 7  5  Z\" />\n"
-	"  <path d=\"M 8  1  L 9  1  L 9  2  L 8  2  L 8  1  Z\" />\n"
-	"  <path d=\"M 8  15 L 9  15 L 9  16 L 8  16 L 8  15 Z\" />\n"
-	"  <path d=\"M 9  1  L 10 1  L 10 2  L 9  2  L 9  1  Z\" />\n"
-	"  <path d=\"M 9  2  L 10 2  L 10 3  L 9  3  L 9  2  Z\" />\n"
-	"  <path d=\"M 9  6  L 10 6  L 10 7  L 9  7  L 9  6  Z\" />\n"
-	"  <path d=\"M 9  15 L 10 15 L 10 16 L 9  16 L 9  15 Z\" />\n"
-	"  <path d=\"M 10 2  L 11 2  L 11 3  L 10 3  L 10 2  Z\" />\n"
-	"  <path d=\"M 10 3  L 11 3  L 11 4  L 10 4  L 10 3  Z\" />\n"
-	"  <path d=\"M 10 4  L 11 4  L 11 5  L 10 5  L 10 4  Z\" />\n"
-	"  <path d=\"M 10 5  L 11 5  L 11 6  L 10 6  L 10 5  Z\" />\n"
-	"  <path d=\"M 10 6  L 11 6  L 11 7  L 10 7  L 10 6  Z\" />\n"
-	"  <path d=\"M 11 6  L 12 6  L 12 7  L 11 7  L 11 6  Z\" />\n"
-	"  <path d=\"M 11 8  L 12 8  L 12 9  L 11 9  L 11 8  Z\" />\n"
-	"  <path d=\"M 10 15 L 11 15 L 11 16 L 10 16 L 10 15 Z\" />\n"
-	"  <path d=\"M 11 10 L 12 10 L 12 11 L 11 11 L 11 10 Z\" />\n"
-	"  <path d=\"M 11 12 L 12 12 L 12 13 L 11 13 L 11 12 Z\" />\n"
-	"  <path d=\"M 11 14 L 12 14 L 12 15 L 11 15 L 11 14 Z\" />\n"
-	"  <path d=\"M 11 15 L 12 15 L 12 16 L 11 16 L 11 15 Z\" />\n"
-	"  <path d=\"M 12 6  L 13 6  L 13 7  L 12 7  L 12 6  Z\" />\n"
-	"  <path d=\"M 12 8  L 13 8  L 13 9  L 12 9  L 12 8  Z\" />\n"
-	"  <path d=\"M 12 10 L 13 10 L 13 11 L 12 11 L 12 10 Z\" />\n"
-	"  <path d=\"M 12 12 L 13 12 L 13 13 L 12 13 L 12 12 Z\" />\n"
-	"  <path d=\"M 12 14 L 13 14 L 13 15 L 12 15 L 12 14 Z\" />\n"
-	"  <path d=\"M 13 6  L 14 6  L 14 7  L 13 7  L 13 6  Z\" />\n"
-	"  <path d=\"M 13 8  L 14 8  L 14 9  L 13 9  L 13 8  Z\" />\n"
-	"  <path d=\"M 13 10 L 14 10 L 14 11 L 13 11 L 13 10 Z\" />\n"
-	"  <path d=\"M 13 12 L 14 12 L 14 13 L 13 13 L 13 12 Z\" />\n"
-	"  <path d=\"M 13 13 L 14 13 L 14 14 L 13 14 L 13 13 Z\" />\n"
-	"  <path d=\"M 13 14 L 14 14 L 14 15 L 13 15 L 13 14 Z\" />\n"
-	"  <path d=\"M 14 7  L 15 7  L 15 8  L 14 8  L 14 7  Z\" />\n"
-	"  <path d=\"M 14 8  L 15 8  L 15 9  L 14 9  L 14 8  Z\" />\n"
-	"  <path d=\"M 14 9  L 15 9  L 15 10 L 14 10 L 14 9  Z\" />\n"
-	"  <path d=\"M 14 10 L 15 10 L 15 11 L 14 11 L 14 10 Z\" />\n"
-	"  <path d=\"M 14 11 L 15 11 L 15 12 L 14 12 L 14 11 Z\" />\n"
-	"  <path d=\"M 14 12 L 15 12 L 15 13 L 14 13 L 14 12 Z\" />\n"
-	"</svg>\n";
-
-static const char *const STYLE_STR = ""
-	":root {\n"
-	"  --color: black;\n"
-	"  --background-color: white;\n"
-	"  --hover-color: hsl(0, 0%, 93%);\n"
-	"  --nav-color: hsl(0, 0%, 87%);\n"
-	"}\n"
-	"\n"
-	"@media(prefers-color-scheme: dark) {\n"
-	"  :root {\n"
-	"    --color: white;\n"
-	"    --background-color: black;\n"
-	"    --hover-color: hsl(0, 0%, 7%);\n"
-	"    --nav-color: hsl(0, 0%, 13%);\n"
-	"  }\n"
-	"\n"
-	"  body {\n"
-	"    color: var(--color);\n"
-	"    background-color: var(--background-color);\n"
-	"  }\n"
-	"\n"
-	"  a {\n"
-	"    color: hsl(211, 100%, 60%);\n"
-	"  }\n"
-	"\n"
-	"  a:visited {\n"
-	"    color: hsl(242, 100%, 80%);\n"
-	"  }\n"
-	"}\n"
-	"\n"
-	"body {\n"
-	"  font-family: monospace;\n"
-	"  max-width: 1100px;\n"
-	"  margin: 0 auto 0 auto;\n"
-	"}\n"
-	"\n"
-	".logo {\n"
-	"  height: 6em;\n"
-	"  width: 6em;\n"
-	"}\n"
-	"\n"
-	".header-horizontal-grouping {\n"
-	"  display: flex;\n"
-	"  align-items: center;\n"
-	"  margin-top: 1em;\n"
-	"  margin-bottom: 1em;\n"
-	"}\n"
-	"\n"
-	".header-description {\n"
-	"  margin-left: 2em;\n"
-	"}\n"
-	"\n"
-	"nav {\n"
-	"  margin-top: 2em;\n"
-	"}\n"
-	"\n"
-	"nav ul {\n"
-	"  display: flex;\n"
-	"  list-style-type: none;\n"
-	"  margin-bottom: 0;\n"
-	"}\n"
-	"\n"
-	"nav li {\n"
-	"  margin-left: 10px;\n"
-	"}\n"
-	"\n"
-	"nav a, nav a:visited {\n"
-	"  padding: 2px 8px 0px 8px;\n"
-	"  color: var(--color);\n"
-	"}\n"
-	"\n"
-	".selected-nav-item {\n"
-	"  background-color: var(--nav-color);\n"
-	"}\n"
-	"\n"
-	"hr {\n"
-	"  margin-top: 0;\n"
-	"  border: 0;\n"
-	"  border-top: 3px solid var(--nav-color);\n"
-	"}\n"
-	"\n"
-	"table {\n"
-	"  margin: 2em auto;\n"
-	"}\n"
-	"\n"
-	"th {\n"
-	"  padding-bottom: 1em;\n"
-	"}\n"
-	"\n"
-	"tbody tr:hover {\n"
-	"  background-color: var(--hover-color);\n"
-	"}\n"
-	"\n"
-	"td {\n"
-	"  padding-left: 1em;\n"
-	"  padding-right: 1em;\n"
-	"}\n"
-	"\n"
-	"footer {\n"
-	"  text-align: center;\n"
-	"}\n"
-	"";
-
-
-#define DESCRIPTION_MAXLENGTH 81
-static bool verbose = false;
-static const char *const GIT_SUFFIX = ".git";
-static const char *const PROJECT_HOMEPAGE_LINK =
-	"<a href=\"https://euandreh.xyz/" PROGNAME "\">" PROGNAME "</a>.";
-
-
-static void logerr(const char *const s, const char *const msg, int lineno) {
-	fprintf(
-		stderr,
-		"%s:%s:%d: %s: %s\n",
-		PROGNAME,
-		__FILE__,
-		lineno,
-		s,
-		msg
-	);
-}
-
-static void logerrs(
-	const char *const pre,
-	const char *const mid,
-	const char *const post,
-	const char *const msg,
-	int lineno
-) {
-	fprintf(
-		stderr,
-		"%s:%s:%d: %s%s%s: %s\n",
-		PROGNAME,
-		__FILE__,
-		lineno,
-		pre,
-		mid,
-		post,
-		msg
-	);
-}
-
-static void logerrl(
-	const char *const pre,
-	const size_t mid,
-	const char *const post,
-	const char *const msg,
-	int lineno
-) {
-	fprintf(
-		stderr,
-		"%s:%s:%d: %s%ld%s: %s\n",
-		PROGNAME,
-		__FILE__,
-		lineno,
-		pre,
-		mid,
-		post,
-		msg
-	);
-}
-
-static const char *_(int msg_id) {
-	if (!catalog_descriptor || catalog_descriptor == (nl_catd)-1) {
-		return MSGS[msg_id];
-	}
-	errno = 0;
-	const char *const ret =
-		catgets(catalog_descriptor, NL_SETD, msg_id, MSGS[msg_id]);
-	if (errno && verbose) {
-		logerrl("catgets(", msg_id, ")", strerror(errno), __LINE__);
-	}
-	return ret;
-}
-
-#ifdef TEST
-static void test_underscore(void) {
-	test_start("test_underscore");
-	const char *const original_locale = setlocale(LC_ALL, NULL);
-	setlocale(LC_ALL, "");
-	setenv("NLSPATH", "", 1);
-	{
-		testing("a NULL value for catalog_descriptor");
-		test_ok();
-	}
-	setlocale(LC_ALL, original_locale);
-}
-#endif
-
-static int print_msg(FILE *const fd, const char *const msg) {
-	if (fprintf(fd, "%s", msg) < 0) {
-		logerr("fprintf()", strerror(errno), __LINE__);
-		return -1;
-	}
-	return 0;
-}
-
-static int print_help(FILE *const fd) {
-	return print_msg(fd, _(MSG_HELP));
-}
-
-static int print_version(FILE *const fd) {
-	return print_msg(fd, PROGNAME "-" VERSION " " DATE "\n");
-}
-
-static int print_usage(FILE *const fd) {
-	return print_msg(fd, _(MSG_USAGE));
-}
-
-
-static char *remove_suffix(char *const s, const char *const suffix) {
-	if (!s || !suffix) {
-		return NULL;
-	}
-
-	char *const name = strdup(s);
-	if (!name) {
-		logerrs("strdup(\"", s, "\")", strerror(errno), __LINE__);
-		return NULL;
-	}
-
-	const char *const match_suffix = strrchr(name, suffix[0]);
-	if (match_suffix && (strcmp(match_suffix, suffix) == 0)) {
-		const size_t suffix_idx = strlen(name) - strlen(suffix);
-		name[suffix_idx] = '\0';
-	}
-	return name;
-}
-
-#ifdef TEST
-static void test_remove_suffix(void) {
-	test_start("test_remove_suffix");
-	{
-		testing("empty string");
-		char *const s = remove_suffix("", "suffix");
-		assert(s);
-		assert(strcmp(s, "") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("empty suffix");
-		char *const s = remove_suffix("a string", "");
-		assert(s);
-		assert(strcmp(s, "a string") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("with no suffix match");
-		char *const s = remove_suffix("another string", "NO MATCH!");
-		assert(s);
-		assert(strcmp(s, "another string") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("with suffix bigger than string");
-		char *const s = remove_suffix("str", "a string");
-		assert(s);
-		assert(strcmp(s, "str") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("with a NULL string");
-		char *const s = remove_suffix(NULL, "a non-null suffix");
-		assert(s == NULL);
-		test_ok();
-	}
-	{
-		testing("with a NULL suffix");
-		char *const s = remove_suffix("not null", NULL);
-		assert(s == NULL);;
-		test_ok();
-	}
-	{
-		testing("both are NULL");
-		char *const s = remove_suffix(NULL, NULL);
-		assert(s == NULL);
-		test_ok();
-	}
-	{
-		testing("matching prefix");
-		char *const s = remove_suffix("aaa bbb ccc", "aaa");
-		assert(s);
-		assert(strcmp(s, "aaa bbb ccc") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("matching infix");
-		char *const s = remove_suffix("aaa bbb ccc", "bbb");
-		assert(s);
-		assert(strcmp(s, "aaa bbb ccc") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("with suffix equal to string");
-		char *const s = remove_suffix("string", "string");
-		assert(s);
-		assert(strcmp(s, "") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("with matching suffix");
-		char *const s = remove_suffix("string", "ing");
-		assert(s);
-		assert(strcmp(s, "str") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("example usage: with .git suffix");
-		char *const s = remove_suffix("reponame.git", GIT_SUFFIX);
-		assert(s);
-		assert(strcmp(s, "reponame") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("example usage: with full path");
-		char *const s = remove_suffix("an/example/path", "ath");
-		assert(s);
-		assert(strcmp(s, "an/example/p") == 0);
-		free(s);
-		test_ok();
-	}
-}
-#endif
-
-static char *strjoin(const char *const s1, const char *const s2) {
-	if (!s1 || !s2) {
-		return NULL;
-	}
-
-	const size_t size1 = strnlen(s1, SIZE_MAX);
-	const size_t size2 = strnlen(s2, SIZE_MAX - sizeof('\0'))
-		+ sizeof('\0');
-	if (SIZE_MAX - size1 < size2) {
-		errno = EOVERFLOW;
-		logerr("strjoin()", strerror(errno), __LINE__);
-		return NULL;
-	}
-	const size_t size = size1 + size2;
-	char *const s = malloc(size);
-	if (!s) {
-		logerrl("malloc(", size, ")", strerror(errno), __LINE__);
-		return NULL;
-	}
-
-	strcpy(s, s1);
-	strcat(s, s2);
-	return s;
-}
-
-#ifdef TEST
-static void test_strjoin(void) {
-	test_start("test_strjoin");
-	{
-		testing("joining empty strings");
-		char *const s = strjoin("", "");
-		assert(s);
-		assert(strcmp(s, "") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("joining NULL strings");
-		assert(strjoin(NULL, NULL) == NULL);
-		assert(strjoin("", NULL) == NULL);
-		assert(strjoin(NULL, "") == NULL);
-		test_ok();
-	}
-	{
-		testing("first string is empty");
-		char *const s = strjoin("", "second not empty");
-		assert(s);
-		assert(strcmp(s, "second not empty") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("second string is empty");
-		char *const s = strjoin("first not empty", "");
-		assert(s);
-		assert(strcmp(s, "first not empty") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("two non-empty strings");
-		char *const s = strjoin("abc", "def");
-		assert(s);
-		assert(strcmp(s, "abcdef") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("example usage: with file names");
-		char *const s = strjoin("../repository.git", "/description");
-		assert(s);
-		assert(strcmp(s, "../repository.git/description") == 0);
-		free(s);
-		test_ok();
-	}
-}
-#endif
-
-static char *formatted_date(const time_t time_sec) {
-	const struct tm *const time_utc = gmtime(&time_sec);
-	if (!time_utc) {
-		logerrl("gmtime(", time_sec, ")", strerror(errno), __LINE__);
-		return NULL;
-	}
-
-	/* Expected size, plus breathing room for date format variations */
-	const size_t size = (strlen("XXX-XX-XX XX:XX") + sizeof('\0')) * 2;
-	char *const formatted = malloc(size);
-	if (!formatted) {
-		logerrl("malloc(", size, ")", strerror(errno), __LINE__);
-		return NULL;
-	}
-
-	strftime(formatted, size, "%Y-%m-%d %H:%M", time_utc);
-	return formatted;
-}
-
-#ifdef TEST
-static void test_formatted_date(void) {
-	test_start("test_formatted_date");
-	{
-		testing("when given 0");
-		char *const s = formatted_date(0);
-		assert(s);
-		assert(strcmp(s, "1970-01-01 00:00") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("when given negative values");
-		char *s;
-
-		s = formatted_date(-1);
-		assert(s);
-		assert(strcmp(s, "1969-12-31 23:59") == 0);
-		free(s);
-
-		s = formatted_date(-123456789);
-		assert(s);
-		assert(strcmp(s, "1966-02-02 02:26") == 0);
-		free(s);
-
-		s = formatted_date(-999999999);
-		assert(s);
-		assert(strcmp(s, "1938-04-24 22:13") == 0);
-		free(s);
-
-		test_ok();
-	}
-	{
-		testing("when given recent date values");
-		char *s;
-
-		s = formatted_date(1627645522);
-		assert(s);
-		assert(strcmp(s, "2021-07-30 11:45") == 0);
-		free(s);
-
-		s = formatted_date(1500000000);
-		assert(s);
-		assert(strcmp(s, "2017-07-14 02:40") == 0);
-		free(s);
-
-		s = formatted_date(1000000000);
-		assert(s);
-		assert(strcmp(s, "2001-09-09 01:46") == 0);
-		free(s);
-
-		test_ok();
-	}
-}
-#endif
-
-static size_t max(const size_t size1, const size_t size2) {
-	return size1 > size2 ? size1 : size2;
-}
-
-#ifdef TEST
-static void test_max(void) {
-	test_start("max()");
-	{
-		testing("equal values");
-		assert(max(1, 1) == 1);
-		assert(max(3, 3) == 3);
-		assert(max(0, 0) == 0);
-		assert(max(999, 999) == 999);
-		assert(max(SIZE_MAX, SIZE_MAX) == SIZE_MAX);
-		test_ok();
-	}
-	{
-		testing("first is bigger");
-		assert(max(SIZE_MAX, SIZE_MAX - 1) == SIZE_MAX);
-		assert(max(SIZE_MAX - 1, SIZE_MAX - 2) == SIZE_MAX - 1);
-		assert(max(1, 0) == 1);
-		assert(max(999, 3) == 999);
-		test_ok();
-	}
-	{
-		testing("second is bigger");
-		assert(max(123, 321) == 321);
-		assert(max(1, 999) == 999);
-		test_ok();
-	}
-}
-#endif
-
-static char *escape_html(const char *s) {
-	if (!s) {
-		return NULL;
-	}
-
-	#define AMPCHAR   '&'
-	#define LTCHAR    '<'
-	#define GTCHAR    '>'
-	#define DQUOTCHAR '"'
-	#define SQUOTCHAR '\''
-
-	static const char *const AMP   = "&amp;";
-	static const char *const LT    = "&lt;";
-	static const char *const GT    = "&gt;";
-	static const char *const DQUOT = "&quot;";
-	static const char *const SQUOT = "&#39;";
-
-	const size_t AMP_SIZE   = strlen(AMP);
-	const size_t LT_SIZE    = strlen(LT);
-	const size_t GT_SIZE    = strlen(GT);
-	const size_t DQUOT_SIZE = strlen(DQUOT);
-	const size_t SQUOT_SIZE = strlen(SQUOT);
-
-	const size_t BIGGEST = max(AMP_SIZE, max(LT_SIZE, max(GT_SIZE,
-		max(DQUOT_SIZE, SQUOT_SIZE))));
-
-	const size_t input_size = strnlen(s, SIZE_MAX);
-	size_t escaped_size = 0;
-	for (size_t i = 0; i < input_size; i++) {
-		if (SIZE_MAX - escaped_size < BIGGEST) {
-			errno = EOVERFLOW;
-			logerr("escape_html()", strerror(errno), __LINE__);
-			return NULL;
-		}
-		switch (s[i]) {
-			case AMPCHAR:
-				escaped_size += AMP_SIZE;
-				break;
-			case LTCHAR:
-				escaped_size += LT_SIZE;
-				break;
-			case GTCHAR:
-				escaped_size += GT_SIZE;
-				break;
-			case DQUOTCHAR:
-				escaped_size += DQUOT_SIZE;
-				break;
-			case SQUOTCHAR:
-				escaped_size += SQUOT_SIZE;
-				break;
-			default:
-				escaped_size += sizeof(s[i]);
-				break;
-		}
-	}
-
-	const size_t size = escaped_size + sizeof('\0');
-	char *const escaped = malloc(size);
-	if (!escaped) {
-		logerrl("malloc(", size, ")", strerror(errno), __LINE__);
-		return NULL;
-	}
-	escaped[0] = '\0';
-
-	char c;
-	size_t escaped_idx = 0;
-	while ((c = *s++)) {
-		switch (c) {
-			case AMPCHAR:
-				strcat(escaped, AMP);
-				escaped_idx += AMP_SIZE;
-				break;
-			case LTCHAR:
-				strcat(escaped, LT);
-				escaped_idx += LT_SIZE;
-				break;
-			case GTCHAR:
-				strcat(escaped, GT);
-				escaped_idx += GT_SIZE;
-				break;
-			case DQUOTCHAR:
-				strcat(escaped, DQUOT);
-				escaped_idx += DQUOT_SIZE;
-				break;
-			case SQUOTCHAR:
-				strcat(escaped, SQUOT);
-				escaped_idx += SQUOT_SIZE;
-				break;
-			default:
-				escaped[escaped_idx] = c;
-				escaped[escaped_idx + 1] = '\0';
-				escaped_idx += sizeof(c);
-				break;
-		}
-	}
-
-	return escaped;
-}
-
-#ifdef TEST
-static void test_escape_html(void) {
-	test_start("test_escape_html");
-	{
-		testing("string with no escapable chars");
-		char *const s = escape_html("a plain string");
-		assert(s);
-		assert(strcmp(s, "a plain string") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("an empty string");
-		char *const s = escape_html("");
-		assert(s);
-		assert(strcmp(s, "") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("a NULL value");
-		char *const s = escape_html(NULL);
-		assert(s == NULL);
-		test_ok();
-	}
-	{
-		testing("string with a single & character");
-		char *const s = escape_html("&");
-		assert(s);
-		assert(strcmp(s, "&amp;") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("a string with many escapable characters in sequence");
-		char *const s = escape_html("&& >> text <<");
-		assert(s);
-		assert(strcmp(s, "&amp;&amp; &gt;&gt; text &lt;&lt;") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("all escapable characters");
-		char *const s = escape_html("&<>\"'");
-		assert(s);
-		assert(strcmp(s, "&amp;&lt;&gt;&quot;&#39;") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("example usage: /path/edn->json.git/");
-		char *const s = escape_html("/path/edn->json.git/");
-		assert(s);
-		assert(strcmp(s, "/path/edn-&gt;json.git/") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("example usage: Description"
-			" with \"quotes\" && 'quotes'");
-		char *const s = escape_html(
-			"Description with \"quotes\" && 'quotes'"
-		);
-		assert(s);
-		const char *const expected = "Description with"
-			" &quot;quotes&quot; &amp;&amp; &#39;quotes&#39;";
-		assert(strcmp(s, expected) == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("example usage: plain HTML");
-		char *const s = escape_html("<a href=\"#\">link</a>");
-		assert(s);
-		const char *const expected = "&lt;a"
-			" href=&quot;#&quot;&gt;link&lt;/a&gt;";
-		assert(strcmp(s, expected) == 0);
-		free(s);
-		test_ok();
-	}
-}
-#endif
-
-static bool should_trim(const char c) {
-	return c == '\n' || c == '\t' || c == '\r' || c == ' ';
-}
-
-#ifdef TEST
-static void test_should_trim(void) {
-	test_start("test_should_trim");
-	{
-		testing("the \\0 null character");
-		assert(should_trim('\0') == false);
-		test_ok();
-	}
-	{
-		testing("the \\b character");
-		assert(should_trim('\b') == false);
-		test_ok();
-	}
-	{
-		testing("the space character");
-		assert(should_trim(' ') == true);
-		test_ok();
-	}
-}
-#endif
-
-static void strtrim(char *const s) {
-	if (s == NULL) {
-		return;
-	}
-
-	if (s[0] == '\0') {
-		return;
-	}
-
-	size_t len = strnlen(s, SIZE_MAX);
-	while (len != 0 && should_trim(s[len - 1])) {
-		s[len - 1] = '\0';
-		len--;
-	}
-
-	size_t offset_count = 0;
-	while (should_trim(s[offset_count])) {
-		offset_count++;
-	};
-
-	if (offset_count == 0) {
-		return;
-	}
-
-	for (size_t i = 0; s[i]; i++) {
-		s[i] = s[i + offset_count];
-	}
-}
-
-#ifdef TEST
-static void test_strtrim(void) {
-	test_start("test_strtrim");
-	{
-		testing("empty string");
-		char *const s = "";
-		strtrim(s);
-		assert(strcmp(s, "") == 0);
-		test_ok();
-	}
-	{
-		testing("NULL string");
-		char *const s = NULL;
-		strtrim(s);
-		assert(s == NULL);
-		test_ok();
-	}
-	{
-		testing("string without a newline");
-		char *const s = "a string without a newline";
-		strtrim(s);
-		assert(strcmp(s, "a string without a newline") == 0);
-		test_ok();
-	}
-	{
-		testing("string with a newline");
-		char *const s = strdup("a string with an ending newline\n");
-		assert(s);
-		strtrim(s);
-		assert(strcmp(s, "a string with an ending newline") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("a single newline");
-		char *const s = strdup("\n");
-		assert(s);
-		strtrim(s);
-		assert(strcmp(s, "") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("multiple newlines at the end");
-		char *const s = strdup("a string\n\n\n\n\n");
-		assert(s);
-		strtrim(s);
-		assert(strcmp(s, "a string") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("a single space at the end");
-		char *const s = strdup("a string ");
-		assert(s);
-		strtrim(s);
-		assert(strcmp(s, "a string") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("a single space at the beginning");
-		char *const s = strdup(" a string");
-		assert(s);
-		strtrim(s);
-		assert(strcmp(s, "a string") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("multiple newlines");
-		char *const s = strdup("\n\na string\n\n");
-		assert(s);
-		strtrim(s);
-		assert(strcmp(s, "a string") == 0);
-		free(s);
-		test_ok();
-	}
-	{
-		testing("newline on the middle of the string");
-		char *const s = "a\nstring";
-		strtrim(s);
-		assert(strcmp(s, "a\nstring") == 0);
-		test_ok();
-	}
-	{
-		testing("multiple trimmable characters");
-		char *const s = strdup(" \t \n \r a string \n \t \r ");
-		assert(s);
-		strtrim(s);
-		assert(strcmp(s, "a string") == 0);
-		free(s);
-		test_ok();
-	}
-}
-#endif
-
-static int index_header_write(FILE *const fd, const char *const idx_title) {
-	const int e = fprintf(
-		fd,
-		""
-			"<!DOCTYPE html>\n"
-			"<html lang=\"%s\">\n"
-			"  <head>\n"
-			"    <meta charset=\"UTF-8\" />\n"
-			"    <meta name=\"viewport\"    content=\"width=device-width, initial-scale=1\" />\n"
-			"    <meta name=\"description\" content=\"%s\" />\n"
-			"    <link rel=\"icon\"       type=\"image/svg+xml\" href=\"logo.svg\" />\n"
-			"    <link rel=\"stylesheet\" type=\"text/css\"      href=\"style.css\" />\n"
-			"    <title>%s</title>\n"
-			"  </head>\n"
-			"  <body>\n"
-			"    <header>\n"
-			"      <div class=\"header-horizontal-grouping\">\n"
-			"        <img alt=\"%s\" class=\"logo\" src=\"logo.svg\" />\n"
-			"        <h1 class=\"header-description\">\n"
-			"          %s\n"
-			"        </h1>\n"
-			"      </div>\n"
-			"      <hr />\n"
-			"    </header>\n"
-			"    <main>\n"
-			"      <table>\n"
-			"        <thead>\n"
-			"          <tr>\n"
-			"            <th>\n"
-			"              %s\n"
-			"            </th>\n"
-			"            <th>\n"
-			"              %s\n"
-			"            </th>\n"
-			"            <th>\n"
-			"              %s\n"
-			"            </th>\n"
-			"          </tr>\n"
-			"        </thead>\n"
-			"        <tbody>\n",
-		_(MSG_LANG),
-		_(MSG_INDEX_DESCRIPTION),
-		idx_title,
-		_(MSG_LOGO_ALT_INDEX),
-		idx_title,
-		_(MSG_NAME),
-		_(MSG_DESCRIPTION),
-		_(MSG_LAST_COMMIT)
-	);
-	if (e < 0) {
-		logerr("fprintf()", strerror(errno), __LINE__);
-		return -1;
-	}
-	return 0;
-}
-
-static char *footer_signature_string(void) {
-	const size_t template_size = strnlen(
-		_(MSG_FOOTER_TEMPLATE),
-		SIZE_MAX
-	) - strlen("%s");
-	const size_t link_size = strnlen(
-		PROJECT_HOMEPAGE_LINK,
-		SIZE_MAX - sizeof('\0')
-	) + sizeof('\0');
-	if (SIZE_MAX - template_size < link_size) {
-		errno = EOVERFLOW;
-		logerr("footer_signature_string()", strerror(errno), __LINE__);
-		return NULL;
-	}
-	const size_t signature_size = template_size + link_size;
-
-	char *const signature_text = malloc(signature_size);
-	if (!signature_text) {
-		logerrl("malloc(", signature_size, ")", strerror(errno),
-			__LINE__);
-		return NULL;
-	}
-
-	snprintf(
-		signature_text,
-		signature_size,
-		_(MSG_FOOTER_TEMPLATE),
-		PROJECT_HOMEPAGE_LINK
-	);
-	return signature_text;
-}
-
-static int index_footer_write(FILE *const fd) {
-	char *const signature_text = footer_signature_string();
-	if (!signature_text) {
-		return -1;
-	}
-
-	const int e = fprintf(
-		fd,
-		""
-			"        </tbody>\n"
-			"      </table>\n"
-			"    </main>\n"
-			"    <footer>\n"
-			"      <hr />\n"
-			"      <p>\n"
-			"        %s\n"
-			"      </p>\n"
-			"    </footer>\n"
-			"  </body>\n"
-			"</html>\n",
-		signature_text
-	);
-	free(signature_text);
-	if (e < 0) {
-		logerr("fprintf()", strerror(errno), __LINE__);
-		return -1;
-	}
-
-	return 0;
-}
-
-static char *last_commit_date(struct git_repository *const repo) {
-	struct git_commit *commit = NULL;
-	struct git_revwalk *walker = NULL;
-	struct git_oid oid;
-	char *ret;
-
-	if (
-		   git_revwalk_new(&walker, repo)
-		|| git_revwalk_push_head(walker)
-		|| git_revwalk_next(&oid, walker)
-		|| git_commit_lookup(&commit, repo, &oid)
-	) {
-		char *const default_return = strdup("");
-		if (!default_return) {
-			logerr("strdup(\"\")", strerror(errno), __LINE__);
-		}
-		ret = default_return;
-		goto cleanup;
-	}
-
-	const struct git_signature *const author = git_commit_author(commit);
-	assert(author);
-	ret = formatted_date(author->when.time);
-
-cleanup:
-	git_commit_free(commit);
-	git_revwalk_free(walker);
-	return ret;
-}
-
-#ifdef TEST
-static void test_last_commit_date(void) {
-	test_start("test_last_commit_date");
-	{
-		testing("embedded Git repository"
-			" tests/resources/repositories/repo-1");
-		struct git_repository *repo;
-		const int e = git_repository_open_ext(
-			&repo,
-			"tests/resources/repositories/repo-1",
-			GIT_REPOSITORY_OPEN_NO_SEARCH,
-			NULL
-		);
-		assert(e == 0);
-		char *const date = last_commit_date(repo);
-		assert(date);
-		assert(strcmp(date, "2021-07-31 19:29") == 0);
-		free(date);
-		git_repository_free(repo);
-		test_ok();
-	}
-	{
-		testing("embedded Git repository"
-			" tests/resources/repositories/repo-2");
-		struct git_repository *repo;
-		const int e = git_repository_open_ext(
-			&repo,
-			"tests/resources/repositories/repo-2",
-			GIT_REPOSITORY_OPEN_NO_SEARCH,
-			NULL
-		);
-		assert(e == 0);
-		char *const date = last_commit_date(repo);
-		assert(date);
-		assert(strcmp(date, "2021-07-31 19:27") == 0);
-		free(date);
-		git_repository_free(repo);
-		test_ok();
-	}
-}
-#endif
-
-static int logo_write(FILE *const fd) {
-	if (fprintf(fd, "%s", LOGO_STR) < 0) {
-		logerr("fprintf()", strerror(errno), __LINE__);
-		return -1;
-	}
-	return 0;
-}
-
-static int style_write(FILE *const fd) {
-	if (fprintf(fd, "%s", STYLE_STR) < 0) {
-		logerr("fprintf()", strerror(errno), __LINE__);
-		return -1;
-	}
-	return 0;
-}
-
-static int index_row_write(FILE *const fd, char *const repopath) {
-	int ret = 0;
-	int e;
-
-	struct git_repository *repo = NULL;
-	char *name = NULL;
-	char *description_path = NULL;
-	char *date = NULL;
-	char *encoded_name = NULL;
-	char *encoded_description = NULL;
-	char *encoded_date = NULL;
-
-	e = git_repository_open_ext(
-		&repo,
-		repopath,
-		GIT_REPOSITORY_OPEN_NO_SEARCH,
-		NULL
-	);
-	if (e) {
-		fprintf(stderr, "%s: cannot open repository\n", repopath);
-		ret = 1;
-		goto cleanup;
-	}
-
-	if (
-		   !(name = remove_suffix(basename(repopath), GIT_SUFFIX))
-		|| !(description_path = strjoin(repopath, "/description"))
-		|| !(date = last_commit_date(repo))
-	) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	char description[DESCRIPTION_MAXLENGTH] = "";
-	FILE *const f = fopen(description_path, "r");
-	if (f) {
-		if (!fgets(description, sizeof(description), f)) {
-			logerrs("fgets(\"", description_path, "\")",
-				strerror(errno), __LINE__);
-		} else {
-			strtrim(description);
-		}
-		if (fclose(f)) {
-			logerrs("fclose(\"", description_path, "\")",
-				strerror(errno), __LINE__);
-			ret = -1;
-			goto cleanup;
-		}
-	}
-
-	if (
-		   !(encoded_name        = escape_html(name))
-		|| !(encoded_description = escape_html(description))
-		|| !(encoded_date        = escape_html(date))
-	) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	e = fprintf(
-		fd,
-		""
-			"          <tr>\n"
-			"            <td>\n"
-			"              <a href=\"%s/\">\n"
-			"                %s\n"
-			"              </a>\n"
-			"            </td>\n"
-			"            <td>\n"
-			"              %s\n"
-			"            </td>\n"
-			"            <td>\n"
-			"              %s\n"
-			"            </td>\n"
-			"          </tr>\n",
-		encoded_name,
-		encoded_name,
-		encoded_description,
-		encoded_date
-	);
-	if (e < 0) {
-		logerr("fprintf()", strerror(errno), __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-cleanup:
-	free(encoded_date);
-	free(encoded_description);
-	free(encoded_name);
-	free(date);
-	free(description_path);
-	free(name);
-	git_repository_free(repo);
-	return ret;
-}
-
-static int index_write(
-	const char *const outdir,
-	const char *const title,
-	const int repoc,
-	char *const repov[]
-) {
-	int ret = 0;
-	char *index_path = NULL;
-	char *logo_path  = NULL;
-	char *style_path = NULL;
-	FILE *index_fd = NULL;
-	FILE *logo_fd  = NULL;
-	FILE *style_fd = NULL;
-
-	if (
-		   !(index_path = strjoin(outdir, "/index.html"))
-		|| !(logo_path  = strjoin(outdir, "/logo.svg"))
-		|| !(style_path = strjoin(outdir, "/style.css"))
-	) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	if (!(index_fd = fopen(index_path, "w"))) {
-		logerrs("fopen(\"", index_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-	if (!(logo_fd = fopen(logo_path, "w"))) {
-		logerrs("fopen(\"", logo_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-	if (!(style_fd = fopen(style_path, "w"))) {
-		logerrs("fopen(\"", style_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	if (index_header_write(index_fd, title)) {
-		ret = -1;
-		goto cleanup;
-	}
-	for (int i = 0; i < repoc; i++) {
-		const int e = index_row_write(index_fd, repov[i]);
-		if (e == -1) {
-			ret = -1;
-			goto cleanup;
-		}
-		if (e) {
-			ret = 1;
-		}
-	}
-
-	if (
-		   index_footer_write(index_fd)
-		|| logo_write(logo_fd)
-		|| style_write(style_fd)
-	) {
-		ret = -1;
-		goto cleanup;
-	}
-
-cleanup:
-	if (style_fd && fclose(style_fd)) {
-		logerrs("fclose(\"", style_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-	}
-	if (logo_fd && fclose(logo_fd)) {
-		logerrs("fclose(\"", logo_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-	}
-	if (index_fd && fclose(index_fd)) {
-		logerrs("fclose(\"", index_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-	}
-	free(style_path);
-	free(logo_path);
-	free(index_path);
-	return ret;
-}
-
-static int repo_refs_branches_each(
-	FILE *const refs_fd,
-	struct git_repository *const repo,
-	struct git_reference *const ref
-) {
-	int ret = 0;
-	struct git_commit *commit = NULL;
-	char *encoded_name    = NULL;
-	char *encoded_summary = NULL;
-	char *encoded_author  = NULL;
-	char *date = NULL;
-	int e;
-
-	const char *const name = git_reference_shorthand(ref);
-	assert(name);
-	const struct git_oid *const oid = git_reference_target(ref);
-	assert(oid);
-
-	if (git_commit_lookup(&commit, repo, oid)) {
-		const git_error *const error = git_error_last();
-		assert(error);
-		logerrs("git_commit_lookup(", name, ")", error->message,
-			__LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	const char *const sha = git_oid_tostr_s(oid);
-	assert(sha);
-	const char *const summary = git_commit_summary(commit);
-	assert(summary);
-	const struct git_signature *const author = git_commit_author(commit);
-	assert(author);
-
-	if (
-		   !(encoded_name    = escape_html(name))
-		|| !(encoded_summary = escape_html(summary))
-		|| !(encoded_author  = escape_html(author->name))
-		|| !(date = formatted_date(author->when.time))
-	) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	e = fprintf(
-		refs_fd,
-		""
-			"          <tr>\n"
-			"            <td>\n"
-			"              <a href=\"log/%s.html\">\n"
-			"                %s\n"
-			"              </a>\n"
-			"            </td>\n"
-			"            <td>\n"
-			"              <a href=\"commit/%s.html\">\n"
-			"                %s\n"
-			"              </a>\n"
-			"            </td>\n"
-			"            <td>\n"
-			"              %s\n"
-			"            </td>\n"
-			"            <td>\n"
-			"              %s\n"
-			"            </td>\n"
-			"          </tr>\n"
-			"",
-		encoded_name,
-		encoded_name,
-		sha,
-		encoded_summary,
-		encoded_author,
-		date
-	);
-	if (e < 0) {
-		logerr("fprintf()", strerror(errno), __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-cleanup:
-	free(date);
-	free(encoded_author);
-	free(encoded_summary);
-	free(encoded_name);
-	git_commit_free(commit);
-	return ret;
-}
-
-static int repo_refs_tags_each(
-	FILE *const refs_fd,
-	struct git_repository *const repo,
-	struct git_reference *const ref,
-	const char *const project_name
-) {
-	int ret = 0;
-	struct git_commit *commit = NULL;
-	char *encoded_name    = NULL;
-	char *encoded_author  = NULL;
-	char *date = NULL;
-	int e;
-
-	if (!git_reference_is_tag(ref)) {
-		goto cleanup;
-	}
-
-	const char *const name = git_reference_shorthand(ref);
-	assert(name);
-	const struct git_oid *const oid = git_reference_target(ref);
-	assert(oid);
-
-	if (git_commit_lookup(&commit, repo, oid)) {
-		const git_error *const error = git_error_last();
-		assert(error);
-		logerrs("git_commit_lookup(", name, ")", error->message, __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	const char *const summary = git_commit_summary(commit);
-	assert(summary);
-	const struct git_signature *const author = git_commit_author(commit);
-	assert(author);
-
-	if (
-		   !(encoded_name    = escape_html(name))
-		|| !(encoded_author  = escape_html(author->name))
-		|| !(date = formatted_date(author->when.time))
-	) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	e = fprintf(
-		refs_fd,
-		""
-			"          <tr>\n"
-			"            <td>\n"
-			"              <a href=\"tag/%s.html\">\n"
-			"                %s\n"
-			"              </a>\n"
-			"              (<a href=\"tarballs/%s-%s.tar.gz\">tarball</a>, <a href=\"tarballs/%s-%s.tar.gz.asc\">sig</a>)\n"
-			"            </td>\n"
-			"            <td>\n"
-			"              %s\n"
-			"            </td>\n"
-			"            <td>\n"
-			"              %s\n"
-			"            </td>\n"
-			"          </tr>\n"
-			"",
-		encoded_name,
-		encoded_name,
-		project_name,
-		encoded_name,
-		project_name,
-		encoded_name,
-		encoded_author,
-		date
-	);
-	if (e < 0) {
-		logerr("fprintf()", strerror(errno), __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-cleanup:
-	free(date);
-	free(encoded_author);
-	free(encoded_name);
-	git_commit_free(commit);
-	return ret;
-}
-
-static int repo_refs_write(
-	const char *const outdir,
-	struct git_repository *const repo,
-	const char *const project_name,
-	const char *const description,
-	const char *const clone_url
-) {
-	int ret = 0;
-	char *signature_text = NULL;
-	char *refs_path = NULL;
-	FILE *refs_fd = NULL;
-	struct git_branch_iterator    *branch_iter = NULL;
-	struct git_reference_iterator *ref_iter    = NULL;
-	int e;
-
-
-	if (
-		   !(signature_text = footer_signature_string())
-		|| !(refs_path = strjoin(outdir, "/refs.html"))
-	) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	if (!(refs_fd = fopen(refs_path, "w"))) {
-		logerrs("fopen(\"", refs_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	if (
-		   git_branch_iterator_new(&branch_iter, repo, GIT_BRANCH_LOCAL)
-		|| git_reference_iterator_new(&ref_iter, repo)
-	) {
-		const git_error *const error = git_error_last();
-		assert(error);
-		const char *const fn = branch_iter == NULL
-			? "git_branch_iterator_new()"
-			: "git_reference_iterator_new()";
-		logerr(fn, error->message, __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-
-	e = fprintf(
-		refs_fd,
-		""
-			"<!DOCTYPE html>\n"
-			"<html lang=\"%s\">\n"
-			"  <head>\n"
-			"    <meta charset=\"UTF-8\" />\n"
-			"    <meta name=\"viewport\"    content=\"width=device-width, initial-scale=1\" />\n"
-			"    <meta name=\"description\" content=\"%s\" />\n"
-			"    <link rel=\"icon\"       type=\"image/svg+xml\"        href=\"logo.svg\" />\n"
-			"    <link rel=\"stylesheet\" type=\"text/css\"             href=\"style.css\" />\n"
-			"    <link rel=\"alternate\"  type=\"application/atom+xml\" href=\"commits.xml\" title=\"%s - %s\" hreflang=\"%s\" />\n"
-			"    <link rel=\"alternate\"  type=\"application/atom+xml\" href=\"tags.xml\"    title=\"%s - %s\" hreflang=\"%s\" />\n"
-			"    <title>%s</title>\n"
-			"  </head>\n"
-			"  <body>\n"
-			"    <header>\n"
-			"      <div class=\"header-horizontal-grouping\">\n"
-			"        <a href=\"../\">\n"
-			"          <img alt=\"%s\" class=\"logo\" src=\"logo.svg\" />\n"
-			"        </a>\n"
-			"        <div class=\"header-description\">\n"
-			"          <h1>\n"
-			"            %s\n"
-			"          </h1>\n"
-			"          <h2>\n"
-			"            %s\n"
-			"          </h2>\n"
-			"          <code>\n"
-			"            git clone %s\n"
-			"          </code>\n"
-			"        </div>\n"
-			"      </div>\n"
-			"      <nav>\n"
-			"        <ul>\n"
-			"          <li>\n"
-			"            <a href=\"files.html\">\n"
-			"              %s\n"
-			"            </a>\n"
-			"          </li>\n"
-			"          <li>\n"
-			"            <a href=\"log.html\">\n"
-			"              %s\n"
-			"            </a>\n"
-			"          </li>\n"
-			"          <li class=\"selected-nav-item\">\n"
-			"            <a href=\"refs.html\">\n"
-			"              %s\n"
-			"            </a>\n"
-			"          </li>\n"
-			"        </ul>\n"
-			"      </nav>\n"
-			"      <hr />\n"
-			"    </header>\n"
-			"    <main>\n"
-			"      <table>\n"
-			"        <thead>\n"
-			"          <tr>\n"
-			"            <th>\n"
-			"              %s\n"
-			"            </th>\n"
-			"            <th>\n"
-			"              %s\n"
-			"            </th>\n"
-			"            <th>\n"
-			"              %s\n"
-			"            </th>\n"
-			"            <th>\n"
-			"              %s\n"
-			"            </th>\n"
-			"          </tr>\n"
-			"        </thead>\n"
-			"        <tbody>\n",
-		_(MSG_LANG),
-		description,
-		project_name,
-		_(MSG_COMMIT_FEED),
-		_(MSG_LANG),
-		project_name,
-		_(MSG_TAGS_FEED),
-		_(MSG_LANG),
-		project_name,
-		_(MSG_LOGO_ALT_REPOSITORY),
-		project_name,
-		description,
-		clone_url,
-		_(MSG_NAV_FILES),
-		_(MSG_NAV_LOG),
-		_(MSG_NAV_REFS),
-		_(MSG_THEAD_BRANCH),
-		_(MSG_THEAD_COMMITMSG),
-		_(MSG_THEAD_AUTHOR),
-		_(MSG_THEAD_DATE)
-	);
-	if (e < 0) {
-		logerr("fprintf()", strerror(errno), __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	struct git_reference *ref;
-	git_branch_t _btype;
-	while (!(e = git_branch_next(&ref, &_btype, branch_iter))) {
-		e = repo_refs_branches_each(refs_fd, repo, ref);
-		git_reference_free(ref);
-		if (e) {
-			goto cleanup;
-		}
-	}
-	if (e != GIT_ITEROVER) {
-		const git_error *const error = git_error_last();
-		assert(error);
-		logerr("git_branch_next()", error->message, __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	e = fprintf(
-		refs_fd,
-		""
-			"        </tbody>\n"
-			"      </table>\n"
-			"      <table>\n"
-			"        <thead>\n"
-			"          <tr>\n"
-			"            <th>\n"
-			"              %s\n"
-			"            </th>\n"
-			"            <th>\n"
-			"              %s\n"
-			"            </th>\n"
-			"            <th>\n"
-			"              %s\n"
-			"            </th>\n"
-			"          </tr>\n"
-			"        </thead>\n"
-			"        <tbody>\n",
-		_(MSG_THEAD_TAG),
-		_(MSG_THEAD_AUTHOR),
-		_(MSG_THEAD_DATE)
-	);
-	if (e < 0) {
-		logerr("fprintf()", strerror(errno), __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	while (!(e = git_reference_next(&ref, ref_iter))) {
-		e = repo_refs_tags_each(refs_fd, repo, ref, project_name);
-		git_reference_free(ref);
-		if (e) {
-			goto cleanup;
-		}
-	}
-	if (e != GIT_ITEROVER) {
-		const git_error *const error = git_error_last();
-		assert(error);
-		logerr("git_reference_next()", error->message, __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	e = fprintf(
-		refs_fd,
-		""
-			"        </tbody>\n"
-			"      </table>\n"
-			"    </main>\n"
-			"    <footer>\n"
-			"      <hr />\n"
-			"      <p>\n"
-			"        %s\n"
-			"      </p>\n"
-			"    </footer>\n"
-			"  </body>\n"
-			"</html>\n",
-		signature_text
-	);
-	if (e < 0) {
-		logerr("fprintf()", strerror(errno), __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-cleanup:
-	git_branch_iterator_free(branch_iter);
-	git_reference_iterator_free(ref_iter);
-	if (refs_fd && fclose(refs_fd)) {
-		logerrs("fclose(\"", refs_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-	}
-	free(refs_path);
-	free(signature_text);
-	return ret;
-}
-
-static int repo_tarballs_write(
-	const char *const outdir,
-	struct git_repository *const repo,
-	const char *const project_name
-) {
-	int ret = 0;
-	int e;
-	char *tarballs_dir = NULL;
-	struct git_reference_iterator *ref_iter = NULL;
-
-	if (!(tarballs_dir = strjoin(outdir, "/tarballs"))) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	errno = 0;
-	if (mkdir(tarballs_dir, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH)
-			&& errno != EEXIST) {
-		logerrs("mkdir(\"", tarballs_dir, "\")", strerror(errno),
-			__LINE__);
-		ret = EXIT_ERROR;
-		goto cleanup;
-	}
-
-	if (git_reference_iterator_new(&ref_iter, repo)) {
-		const git_error *const error = git_error_last();
-		assert(error);
-		logerr("git_reference_iterator_new()", error->message,
-			__LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	struct git_reference *ref;
-	while (!(e = git_reference_next(&ref, ref_iter))) {
-		const char *const name = git_reference_shorthand(ref);
-		assert(name);
-		const bool is_tag    = git_reference_is_tag(ref);
-		const bool is_branch = git_reference_is_branch(ref);
-		const bool is_note   = git_reference_is_note(ref);
-
-		if (!is_tag && !is_branch && !is_note) {
-			goto loop_cleanup;
-		}
-		if (is_note && strcmp(name, "notes/signatures/tar.xz") != 0) {
-			goto loop_cleanup;
-		}
-
-		// printf("reference name: %s\n", git_reference_shorthand(ref));
-
-		// https://github.com/ionescu007/minlzma
-		// https://git.tukaani.org/?p=xz.git;a=tree;f=src;h=665b39e6439f1bb5afd9181ec0890c2ed26d047e;hb=HEAD
-		// git archive --format tar.xz --prefix "$PROJECT-$tag/" "$tag"
-	loop_cleanup:
-		git_reference_free(ref);
-	}
-	if (e != GIT_ITEROVER) {
-		const git_error *const error = git_error_last();
-		assert(error);
-		logerr("git_reference_next()", error->message, __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-cleanup:
-	git_reference_iterator_free(ref_iter);
-	free(tarballs_dir);
-	return ret;
-}
-
-static int repo_write(
-	const char *const outdir,
-	char *const reporelpath,
-	const char *const clone_url
-) {
-	int ret = 0;
-	int e;
-
-	char *repopath            = NULL;
-	char *description_path    = NULL;
-	char *logo_path           = NULL;
-	char *style_path          = NULL;
-	char *name                = NULL;
-	char *encoded_name        = NULL;
-	char *encoded_description = NULL;
-	FILE *logo_fd  = NULL;
-	FILE *style_fd = NULL;
-	struct git_repository *repo = NULL;
-
-	if (!(repopath = realpath(reporelpath, NULL))) {
-		logerrs("realpath(\"", reporelpath, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	if (
-		   !(description_path = strjoin(repopath, "/description"))
-		|| !(logo_path        = strjoin(outdir, "/logo.svg"))
-		|| !(style_path       = strjoin(outdir, "/style.css"))
-		|| !(name = remove_suffix(basename(repopath), GIT_SUFFIX))
-	) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	if (!(logo_fd = fopen(logo_path, "w"))) {
-		logerrs("fopen(\"", logo_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-	if (!(style_fd = fopen(style_path, "w"))) {
-		logerrs("fopen(\"", style_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	if (logo_write(logo_fd) || style_write(style_fd)) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	e = git_repository_open_ext(
-		&repo,
-		repopath,
-		GIT_REPOSITORY_OPEN_NO_SEARCH,
-		NULL
-	);
-	if (e) {
-		const git_error *const error = git_error_last();
-		assert(error);
-		logerr("git_repository_open_ext()", error->message, __LINE__);
-		ret = -1;
-		goto cleanup;
-	}
-
-	char description[DESCRIPTION_MAXLENGTH] = "";
-	FILE *f = fopen(description_path, "r");
-	if (f) {
-		if (!fgets(description, sizeof(description), f)) {
-			logerrs("fget(\"", description_path, "\")",
-				strerror(errno), __LINE__);
-		} else {
-			strtrim(description);
-		}
-		if (fclose(f)) {
-			logerrs("fclose(\"", description_path, "\")",
-				strerror(errno), __LINE__);
-			ret = -1;
-			goto cleanup;
-		}
-	}
-
-	if (
-		   !(encoded_name        = escape_html(name))
-		|| !(encoded_description = escape_html(description))
-	) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	if (
-		repo_refs_write(outdir, repo, encoded_name,
-			encoded_description, clone_url)
-		|| repo_tarballs_write(outdir, repo, encoded_name)
-	) {
-		ret = -1;
-		goto cleanup;
-	}
-
-cleanup:
-	free(encoded_description);
-	free(encoded_name);
-	if (repo) {
-		git_repository_free(repo);
-	}
-	if (style_fd && fclose(style_fd)) {
-		logerrs("fclose(\"", style_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-	}
-	if (logo_fd && fclose(logo_fd)) {
-		logerrs("fclose(\"", style_path, "\")", strerror(errno),
-			__LINE__);
-		ret = -1;
-	}
-	free(name);
-	free(style_path);
-	free(logo_path);
-	free(description_path);
-	free(repopath);
-	return ret;
-}
-
-#ifdef TEST
-void unit_tests_gistatic(void) {
-	dump_translatable_strings();
-
-	git_libgit2_init();
-	test_underscore();
-	test_remove_suffix();
-	test_strjoin();
-	test_formatted_date();
-	test_max();
-	test_escape_html();
-	test_should_trim();
-	test_strtrim();
-	test_last_commit_date();
-	git_libgit2_shutdown();
-}
-#endif
-
-int gistatic_main(int argc, char *argv[]) {
-	int ret = EXIT_SUCCESS;
-	bool cleanup_libgit = false;
-	catalog_descriptor = catopen(CATALOG_NAME, NL_CAT_LOCALE);
-
-	if (argc < 2) {
-		if (print_usage(stderr)) {
-			ret = EXIT_ERROR;
-			goto cleanup;
-		}
-		ret = EXIT_USAGE;
-		goto cleanup;
-	}
-
-	int flag;
-	bool index = false;
-	const char *idx_title = _(MSG_DEFAULT_TITLE);
-	const char *outdir = ".";
-	const char *clone_url = NULL;
-	while ((flag = getopt(argc, argv, "o:t:u:ivhV")) != -1) {
-		switch (flag) {
-			case 'i':
-				index = true;
-				break;
-			case 't':
-				idx_title = optarg;
-				break;
-			case 'o':
-				outdir = optarg;
-				break;
-			case 'v':
-				verbose = true;
-				break;
-			case 'u':
-				clone_url = optarg;
-				break;
-			case 'h':
-				if (print_usage(stdout) || print_help(stdout)) {
-					ret = EXIT_ERROR;
-				}
-				goto cleanup;
-			case 'V':
-				if (print_version(stdout)) {
-					ret = EXIT_ERROR;
-				}
-				goto cleanup;
-			default:
-				if (print_usage(stderr)) {
-					ret = EXIT_ERROR;
-				}
-				goto cleanup;
-		}
-	}
-
-	if (!index && !clone_url) {
-		if (fprintf(stderr, "%s\n", _(MSG_MISSING_URL)) < 0
-				|| print_usage(stderr)) {
-			ret = EXIT_ERROR;
-			goto cleanup;
-		}
-		ret = EXIT_USAGE;
-		goto cleanup;
-	}
-	if (index && clone_url) {
-		if (fprintf(stderr, "%s\n", _(MSG_INCOMPATIBLE_OPTIONS)) < 0
-				|| print_usage(stderr)) {
-			ret = EXIT_ERROR;
-			goto cleanup;
-		}
-		ret = EXIT_USAGE;
-		goto cleanup;
-	}
-	if (optind == argc) {
-		if (fprintf(stderr, "%s\n", _(MSG_MISSING_ARGS)) < 0
-				|| print_usage(stderr)) {
-			ret = EXIT_ERROR;
-			goto cleanup;
-		}
-		ret = EXIT_USAGE;
-		goto cleanup;
-	}
-
-
-	errno = 0;
-	if (mkdir(outdir, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH)
-			&& errno != EEXIST) {
-		logerrs("mkdir(\"", outdir, "\")", strerror(errno), __LINE__);
-		ret = EXIT_ERROR;
-		goto cleanup;
-	}
-
-	git_libgit2_init();
-	cleanup_libgit = true;
-
-	if (index) {
-		if (index_write(outdir, idx_title,
-				argc - optind, argv + optind)) {
-			ret = EXIT_ERROR;
-			goto cleanup;
-		}
-	} else {
-		if (repo_write(outdir, argv[optind], clone_url)) {
-			ret = EXIT_ERROR;
-			goto cleanup;
-		}
-	}
-
-cleanup:
-	if (cleanup_libgit) {
-		git_libgit2_shutdown();
-	}
-	if (catalog_descriptor && catalog_descriptor != (nl_catd)-1) {
-		if (catclose(catalog_descriptor)) {
-			logerr("catclose()", strerror(errno), __LINE__);
-			ret = EXIT_ERROR;
-		}
-	}
-	return ret;
-}