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#include <err.h>
#include <fcntl.h>
#include <fnmatch.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>
#include <unistd.h>
#define Q(...) #__VA_ARGS__
#define MANDOC_OPTIONS "fragment,man=%N.%S,includes=../tree/%I"
static int about(int argc, char *argv[]) {
if (argc < 2) return 1;
if (!fnmatch("README.[1-9]", argv[1], 0)) {
execlp("mandoc", "mandoc", "-T", "html", "-O", MANDOC_OPTIONS, NULL);
err(127, "mandoc");
} else if (!fnmatch("*.[1-9]", argv[1], 0)) {
execlp(
"mandoc", "mandoc", "-T", "html", "-O", "toc," MANDOC_OPTIONS, NULL
);
err(127, "mandoc");
} else {
execlp("hilex", "hilex", "-l", "text", "-f", "html", "-o", "pre", NULL);
err(127, "hilex");
}
}
static int email(void) {
size_t cap = 0;
char *buf = NULL;
if (getline(&buf, &cap, stdin) < 0) err(1, "getline");
if (buf[0] == 'C' && !strncmp(&buf[strcspn(buf, " ")], " McEnroe", 8)) {
printf("June%s", &buf[strcspn(buf, " ")]);
} else {
printf("%s", buf);
}
return 0;
}
static int owner(void) {
printf(Q(<a href="https://liberapay.com/june/donate"><img alt="Donate using Liberapay" src="https://liberapay.com/assets/widgets/donate.svg"></a>));
return 0;
}
#define CTAGS_PATTERN "*.[chlmy]"
#define TEMPLATE "/tmp/filter.XXXXXXXXXX"
static char tmp[PATH_MAX];
static char tags[] = TEMPLATE;
static void cleanup(void) {
unlink(tmp);
unlink(tags);
}
static int source(int argc, char *argv[]) {
if (argc < 2) return 1;
if (
strcmp("Makefile", argv[1]) &&
strcmp(".profile", argv[1]) &&
strcmp(".shrc", argv[1]) &&
fnmatch(CTAGS_PATTERN, argv[1], 0) &&
fnmatch("*.mk", argv[1], 0) &&
fnmatch("*.[1-9]", argv[1], 0) &&
fnmatch("*.sh", argv[1], 0)
) {
execlp("hilex", "hilex", "-t", "-n", argv[1], "-f", "html", NULL);
err(127, "hilex");
}
const char *ext = strrchr(argv[1], '.');
if (!strcmp(argv[1], ".profile") || !strcmp(argv[1], ".shrc")) {
ext = ".sh";
} else if (!strcmp(argv[1], "Makefile")) {
ext = ".mk";
} else if (!ext) {
ext = "";
}
snprintf(tmp, sizeof(tmp), TEMPLATE "%s", ext);
int fd = mkstemps(tmp, strlen(ext));
if (fd < 0) err(1, "%s", tmp);
atexit(cleanup);
char buf[4096];
for (ssize_t len; 0 < (len = read(STDIN_FILENO, buf, sizeof(buf)));) {
if (write(fd, buf, len) < 0) err(1, "%s", tmp);
}
if (close(fd) < 0) err(1, "%s", tmp);
fd = mkstemp(tags);
if (fd < 0) err(1, "%s", tags);
close(fd);
pid_t pid = fork();
if (pid < 0) err(1, "fork");
if (!pid) {
if (!fnmatch(CTAGS_PATTERN, argv[1], 0)) {
execlp("ctags", "ctags", "-w", "-f", tags, tmp, NULL);
warn("ctags");
} else {
execlp("mtags", "mtags", "-f", tags, tmp, NULL);
warn("mtags");
}
_exit(127);
}
int status;
if (wait(&status) < 0) err(1, "wait");
int rw[2];
if (pipe(rw) < 0) err(1, "pipe");
pid = fork();
if (pid < 0) err(1, "fork");
if (!pid) {
dup2(rw[1], STDOUT_FILENO);
close(rw[0]);
close(rw[1]);
execlp("hilex", "hilex", "-f", "html", tmp, NULL);
warn("hilex");
_exit(127);
}
pid = fork();
if (pid < 0) err(1, "fork");
if (!pid) {
dup2(rw[0], STDIN_FILENO);
close(rw[0]);
close(rw[1]);
execlp("htagml", "htagml", "-im", "-f", tags, tmp, NULL);
warn("htagml");
_exit(127);
}
close(rw[0]);
close(rw[1]);
if (wait(&status) < 0) err(1, "wait");
if (wait(&status) < 0) err(1, "wait");
return status;
}
int main(int argc, char *argv[]) {
#ifdef __OpenBSD__
int error;
switch (getprogname()[0]) {
break; case 'a': error = pledge("stdio exec", NULL);
break; case 's': error = pledge("stdio tmppath proc exec", NULL);
break; default: error = pledge("stdio", NULL);
}
if (error) err(1, "pledge");
#endif
switch (getprogname()[0]) {
case 'a': return about(argc, argv);
case 'e': return email();
case 'o': return owner();
case 's': return source(argc, argv);
default: return 1;
}
}
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