/* 'mode' must be read */
FILE *nkf_open(const char *path, const char *mode) {
char buff[PATH_MAX * 2 + 20]; /* 20 is enough gaps */
char *name;
FILE *fp;
if (in_filter == NULL) {
in_filter = kpse_var_value("PTEX_IN_FILTER");
if (in_filter == NULL || strcasecmp(in_filter, "no") == 0) {
nkf_disable();
}
#ifdef NKF_TEST
atexit(nkf_check);
#endif /* NKF_TEST */
}
if (in_filter[0] == '\0') return fopen(path, mode);
name = xstrdup(path);
if (kpse_readable_file(name) == NULL) {
free(name);
return NULL; /* can't read */
}
sprintf(buff, "%.*s < '%.*s'", PATH_MAX, in_filter, PATH_MAX, path);
free(name);
/* fprintf(stderr, "\n`%s`", buff); */
fp = popen(buff , "r");
if (piped_num < NOFILE) piped_fp[piped_num++] = fp;
return fp;
}
static int readable_file(lua_State * L)
{
char *name = xstrdup(luaL_checkstring(L, 1));
TEST_PROGRAM_NAME_SET;
lua_pushstring(L, kpse_readable_file(name));
free(name);
return 1;
}
static str_list_type
dir_list_search P3C(str_llist_type *, dirs, const_string, name,
boolean, search_all)
{
str_llist_elt_type *elt;
str_list_type ret;
unsigned name_len = strlen (name);
unsigned allocated = INIT_ALLOC;
string potential = (string)xmalloc (allocated);
ret = str_list_init ();
for (elt = *dirs; elt; elt = STR_LLIST_NEXT (*elt))
{
const_string dir = STR_LLIST (*elt);
unsigned dir_len = strlen (dir);
while (dir_len + name_len + 1 > allocated)
{
allocated += allocated;
XRETALLOC (potential, allocated, char);
}
strcpy (potential, dir);
strcat (potential, name);
if (kpse_readable_file (potential))
{
str_list_add (&ret, potential);
/* Move this element towards the top of the list. */
str_llist_float (dirs, elt);
/* If caller only wanted one file returned, no need to
terminate the list with NULL; the caller knows to only look
at the first element. */
if (!search_all)
return ret;
/* Start new filename. */
allocated = INIT_ALLOC;
potential = (string)xmalloc (allocated);
}
}
/* If we get here, either we didn't find any files, or we were finding
all the files. But we're done with the last filename, anyway. */
free (potential);
return ret;
}
void getfname(const char *str)
{
int i;
i = strlen(str);
if (i == 0)
usage(ign);
strcpy(DVIfilename, str);
#ifdef KPATHSEA
if (!kpse_readable_file(DVIfilename))
#else
if ((i < 5) || strcmp(str+i-4, ".dvi"))
#endif
strcat(DVIfilename, ".dvi");
return;
} /* getfname */
static str_list_type
absolute_search P1C(string, name)
{
str_list_type ret_list;
string found = kpse_readable_file (name);
/* Some old compilers can't initialize structs. */
ret_list = str_list_init ();
/* If NAME wasn't found, free the expansion. */
if (name != found)
free (name);
/* Add `found' to the return list even if it's null; that tells
the caller we didn't find anything. */
str_list_add (&ret_list, found);
return ret_list;
}
search_list P4C(const_string, path, const_string*, names,
boolean, must_exist, boolean, all)
{
str_list_type ret_list;
const_string* namep;
string elt;
boolean done = false;
#ifdef __DJGPP__
/* We will use `stat' heavily, so let's request for
the fastest possible version of `stat', by telling
it what members of struct stat do we really need.
We need to set this on each call because this is a
library function; the caller might need other options
from `stat'. Thus save the flags and restore them
before exit.
This call tells `stat' that we do NOT need to recognize
executable files (neither by an extension nor by a magic
signature); that we do NOT need time stamp of root directories;
and that we do NOT need the write access bit in st_mode.
Note that `kpse_set_progname' needs the EXEC bits,
but it was already called by the time we get here. */
unsigned short save_djgpp_flags = _djstat_flags;
_djstat_flags = _STAT_EXEC_MAGIC | _STAT_EXEC_EXT
| _STAT_ROOT_TIME | _STAT_WRITEBIT;
#endif
ret_list = str_list_init();
if (KPSE_DEBUG_P (KPSE_DEBUG_SEARCH)) {
DEBUGF1 ("start search(files=[%s", *names);
for (namep = names+1; *namep != NULL; namep++) {
fputc(' ', stderr);
fputs(*namep, stderr);
}
fprintf (stderr, "], must_exist=%d, find_all=%d, path=%s).\n",
must_exist, all, path);
}
/* No need to do any expansion on names. */
for (namep = names; *namep; namep++) {
if (kpse_absolute_p(*namep, true) && kpse_readable_file(*namep)) {
str_list_add(&ret_list, xstrdup(*namep));
/* I know, I know... */
goto out;
}
}
/* Look at each path element in turn. */
for (elt = kpse_path_element (path); !done && elt;
elt = kpse_path_element (NULL))
{
str_list_type *found;
boolean allow_disk_search = true;
if (elt[0] == '!' && elt[1] == '!') {
/* !! magic -> disallow disk searches. */
allow_disk_search = false;
elt += 2;
}
/* See elt-dirs.c for side effects of this function. */
kpse_normalize_path(elt);
/* Try ls-R, unless we're searching for texmf.cnf. */
found = first_search ? NULL : kpse_db_search_list(names, elt, all);
/* Search the filesystem if (1) the path spec allows it, and either
(2a) we are searching for texmf.cnf ; or
(2b) no db exists; or
(2c) no db's are relevant to this elt; or
(3) MUST_EXIST && NAME was not in the db.
In (2*), `found' will be NULL.
In (3), `found' will be an empty list. */
if (allow_disk_search && (!found || (must_exist && !STR_LIST(*found)))) {
str_llist_type *dirs = kpse_element_dirs (elt);
if (dirs && *dirs) {
if (!found)
found = XTALLOC1 (str_list_type);
*found = dir_list_search_list (dirs, names, all);
}
}
/* Did we find anything? */
if (found && STR_LIST (*found)) {
if (all) {
str_list_concat (&ret_list, *found);
} else {
str_list_add (&ret_list, STR_LIST_ELT (*found, 0));
done = true;
}
}
}
out:
if (STR_LIST_LENGTH (ret_list) == 0
|| (all && STR_LIST_LAST_ELT (ret_list) != NULL))
str_list_add (&ret_list, NULL);
if (first_search) {
first_search = false;
} else {
/* Record the filenames we found, if desired. And wrap them in a
debugging line if we're doing that. */
if (KPSE_DEBUG_P (KPSE_DEBUG_SEARCH)) {
DEBUGF1 ("search([%s", *names);
for (namep = names+1; *namep != NULL; namep++) {
fputc(' ', stderr);
fputs(*namep, stderr);
}
fputs ("]) =>", stderr);
}
log_search (ret_list);
if (KPSE_DEBUG_P (KPSE_DEBUG_SEARCH))
putc ('\n', stderr);
}
#ifdef __DJGPP__
/* Undo any side effects. */
_djstat_flags = save_djgpp_flags;
#endif
return STR_LIST (ret_list);
}
static string
maketex P2C(kpse_file_format_type, format, string*, args)
{
/* New implementation, use fork/exec pair instead of popen, since
* the latter is virtually impossible to make safe.
*/
unsigned len;
string *s;
string ret;
string fn;
if (!kpse_make_tex_discard_errors) {
fprintf (stderr, "kpathsea: Running");
for (s = &args[0]; *s != NULL; s++)
fprintf (stderr, " %s", *s);
fputc('\n', stderr);
}
#if defined (AMIGA)
/* Amiga has a different interface. */
{
string cmd;
string newcmd;
cmd = xstrdup(args[0]);
for (s = &args[1]; *s != NULL; s++) {
newcmd = concat(cmd, *s);
free (cmd);
cmd = newcmd;
}
ret = system(cmd) == 0 ? getenv ("LAST_FONT_CREATED"): NULL;
free (cmd);
}
#elif defined (MSDOS)
#error Implement new MSDOS mktex call interface here
#elif defined (WIN32)
/* We would vastly prefer to link directly with mktex.c here.
Unfortunately, it is not quite possible because kpathsea
is not reentrant. The progname is expected to be set in mktex.c
and various initialisations occur. So to be safe, we implement
a call sequence equivalent to the Unix one. */
{
STARTUPINFO si;
PROCESS_INFORMATION pi;
HANDLE child_in, child_out, child_err;
HANDLE father_in, father_out_dup;
HANDLE current_pid;
SECURITY_ATTRIBUTES sa = { sizeof(SECURITY_ATTRIBUTES), NULL, TRUE};
string new_cmd = NULL, app_name = NULL;
char buf[1024+1];
int num;
extern char *quote_args(char **argv);
if (look_for_cmd(args[0], &app_name) == FALSE) {
ret = NULL;
goto error_exit;
}
/* Compute the command line */
new_cmd = quote_args(args);
/* We need this handle to duplicate other handles */
current_pid = GetCurrentProcess();
ZeroMemory( &si, sizeof(STARTUPINFO) );
si.cb = sizeof(STARTUPINFO);
si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW ;
si.wShowWindow = /* 0 */ SW_HIDE ;
/* Child stdin */
child_in = CreateFile("nul",
GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
&sa, /* non inheritable */
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
si.hStdInput = child_in;
if (CreatePipe(&father_in, &child_out, NULL, 0) == FALSE) {
fprintf(stderr, "popen: error CreatePipe\n");
goto error_exit;
}
if (DuplicateHandle(current_pid, child_out,
current_pid, &father_out_dup,
0, TRUE, DUPLICATE_SAME_ACCESS) == FALSE) {
fprintf(stderr, "popen: error DuplicateHandle father_in\n");
CloseHandle(father_in);
CloseHandle(child_out);
goto error_exit;
}
CloseHandle(child_out);
si.hStdOutput = father_out_dup;
/* Child stderr */
if (kpse_make_tex_discard_errors) {
child_err = CreateFile("nul",
GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
&sa, /* non inheritable */
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
}
else {
DuplicateHandle(current_pid, GetStdHandle(STD_ERROR_HANDLE),
current_pid, &child_err,
0, TRUE,
DUPLICATE_SAME_ACCESS);
}
si.hStdError = child_err;
/* creating child process */
if (CreateProcess(app_name, /* pointer to name of executable module */
new_cmd, /* pointer to command line string */
NULL, /* pointer to process security attributes */
NULL, /* pointer to thread security attributes */
TRUE, /* handle inheritance flag */
0, /* creation flags */
NULL, /* pointer to environment */
NULL, /* pointer to current directory */
&si, /* pointer to STARTUPINFO */
&pi /* pointer to PROCESS_INFORMATION */
) == 0) {
FATAL2("kpathsea: CreateProcess() failed for `%s' (Error %x)\n", new_cmd, GetLastError());
}
CloseHandle(child_in);
CloseHandle(father_out_dup);
CloseHandle(child_err);
/* Only the process handle is needed */
CloseHandle(pi.hThread);
/* Get stdout of child from the pipe. */
fn = xstrdup("");
while (ReadFile(father_in,buf,sizeof(buf)-1, &num, NULL) != 0
&& num > 0) {
if (num <= 0) {
if (GetLastError() != ERROR_BROKEN_PIPE) {
FATAL1("kpathsea: read() error code for `%s' (Error %d)", GetLastError());
break;
}
} else {
string newfn;
buf[num] = '\0';
newfn = concat(fn, buf);
free(fn);
fn = newfn;
}
}
/* End of file on pipe, child should have exited at this point. */
CloseHandle(father_in);
if (WaitForSingleObject(pi.hProcess, INFINITE) != WAIT_OBJECT_0) {
WARNING2("kpathsea: failed to wait for process termination: %s (Error %d)\n",
new_cmd, GetLastError());
}
CloseHandle(pi.hProcess);
if (new_cmd) free(new_cmd);
if (app_name) free(app_name);
if (fn) {
len = strlen(fn);
/* Remove trailing newlines and returns. */
while (len && (fn[len - 1] == '\n' || fn[len - 1] == '\r')) {
fn[len - 1] = '\0';
len--;
}
ret = len == 0 ? NULL : kpse_readable_file (fn);
if (!ret && len > 1) {
WARNING1 ("kpathsea: mktexpk output `%s' instead of a filename", fn);
}
/* Free the name if we're not returning it. */
if (fn != ret)
free (fn);
}
error_exit:
;
}
#else
{
/* Standard input for the child. Set to /dev/null */
int childin;
/* Standard output for the child, what we're interested in. */
int childout[2];
/* Standard error for the child, same as parent or /dev/null */
int childerr;
/* Child pid. */
pid_t childpid;
/* Open the channels that the child will use. */
/* A fairly horrible uses of gotos for here for the error case. */
if ((childin = open("/dev/null", O_RDONLY)) < 0) {
perror("kpathsea: open(\"/dev/null\", O_RDONLY)");
goto error_childin;
}
if (pipe(childout) < 0) {
perror("kpathsea: pipe()");
goto error_childout;
}
if ((childerr = open("/dev/null", O_WRONLY)) < 0) {
perror("kpathsea: open(\"/dev/null\", O_WRONLY)");
goto error_childerr;
}
if ((childpid = fork()) < 0) {
perror("kpathsea: fork()");
close(childerr);
error_childerr:
close(childout[0]);
close(childout[1]);
error_childout:
close(childin);
error_childin:
fn = NULL;
} else if (childpid == 0) {
/* Child
*
* We can use vfork, provided we're careful about what we
* do here: do not return from this function, do not modify
* variables, call _exit if there is a problem.
*
* Complete setting up the file descriptors.
* We use dup(2) so the order in which we do this matters.
*/
close(childout[0]);
/* stdin -- the child will not receive input from this */
if (childin != 0) {
close(0);
dup(childin);
close(childin);
}
/* stdout -- the output of the child's action */
if (childout[1] != 1) {
close(1);
dup(childout[1]);
close(childout[1]);
}
/* stderr -- use /dev/null if we discard errors */
if (childerr != 2) {
if (kpse_make_tex_discard_errors) {
close(2);
dup(childerr);
}
close(childerr);
}
/* FIXME: We could/should close all other file descriptors as well. */
/* exec -- on failure a call of _exit(2) it is the only option */
if (execvp(args[0], args))
perror(args[0]);
_exit(1);
} else {
/* Parent */
char buf[1024+1];
int num;
int status;
/* Clean up child file descriptors that we won't use anyway. */
close(childin);
close(childout[1]);
close(childerr);
/* Get stdout of child from the pipe. */
fn = xstrdup("");
while ((num = read(childout[0],buf,sizeof(buf)-1)) != 0) {
if (num == -1) {
if (errno != EINTR) {
perror("kpathsea: read()");
break;
}
} else {
string newfn;
buf[num] = '\0';
newfn = concat(fn, buf);
free(fn);
fn = newfn;
}
}
/* End of file on pipe, child should have exited at this point. */
close(childout[0]);
/* We don't really care about the exit status at this point. */
wait(NULL);
}
if (fn) {
len = strlen(fn);
/* Remove trailing newlines and returns. */
while (len && (fn[len - 1] == '\n' || fn[len - 1] == '\r')) {
fn[len - 1] = '\0';
len--;
}
ret = len == 0 ? NULL : kpse_readable_file (fn);
if (!ret && len > 1) {
WARNING1 ("kpathsea: mktexpk output `%s' instead of a filename", fn);
}
/* Free the name if we're not returning it. */
if (fn != ret)
free (fn);
} else {
ret = NULL;
}
}
#endif
if (ret == NULL)
misstex (format, args);
else
kpse_db_insert (ret);
return ret;
}
