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/* Copyright 2015-2022
* Kaz Kylheku <kaz@kylheku.com>
* Vancouver, Canada
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <wchar.h>
#include <signal.h>
#include <stdlib.h>
#include <glob.h>
#include "config.h"
#include "lib.h"
#include "gc.h"
#include "utf8.h"
#include "eval.h"
#include "signal.h"
#include "unwind.h"
#include "glob.h"
static val s_errfunc;
static uw_frame_t *s_exit_point;
static int errfunc_thunk(const char *errpath, int errcode)
{
val result = t;
uw_frame_t cont_guard;
uw_push_guard(&cont_guard, 0);
uw_simple_catch_begin;
result = funcall2(s_errfunc, string_utf8(errpath), num(errcode));
uw_unwind {
s_exit_point = uw_curr_exit_point;
uw_curr_exit_point = 0; /* stops unwinding */
}
uw_catch_end;
uw_pop_frame(&cont_guard);
return result ? 1 : 0;
}
val glob_wrap(val pattern, val flags, val errfun)
{
val self = lit("glob");
cnum c_flags = c_num(default_arg(flags, zero), self);
glob_t gl;
if (s_errfunc)
uw_throwf(error_s, lit("~a: glob cannot be re-entered from "
"its error callback function"), self, nao);
s_errfunc = default_null_arg(errfun);
c_flags &= ~GLOB_APPEND;
if (stringp(pattern)) {
char *pat_u8 = utf8_dup_to(c_str(pattern, self));
(void) glob(pat_u8, c_flags, s_errfunc ? errfunc_thunk : 0, &gl);
free(pat_u8);
} else {
seq_iter_t iter;
val elem;
seq_iter_init(self, &iter, pattern);
while (seq_get(&iter, &elem)) {
char *pat_u8 = utf8_dup_to(c_str(elem, self));
(void) glob(pat_u8, c_flags, s_errfunc ? errfunc_thunk : 0, &gl);
if (s_exit_point)
break;
c_flags |= GLOB_APPEND;
free(pat_u8);
}
}
s_errfunc = nil;
if (s_exit_point) {
uw_frame_t *ep = s_exit_point;
s_exit_point = 0;
globfree(&gl);
uw_continue(ep);
}
{
size_t i;
list_collect_decl (out, ptail);
for (i = 0; i < gl.gl_pathc; i++)
ptail = list_collect (ptail, string_utf8(gl.gl_pathv[i]));
globfree(&gl);
return out;
}
}
void glob_init(void)
{
prot1(&s_errfunc);
reg_fun(intern(lit("glob"), user_package), func_n3o(glob_wrap, 1));
reg_varl(intern(lit("glob-err"), user_package), num_fast(GLOB_ERR));
reg_varl(intern(lit("glob-mark"), user_package), num_fast(GLOB_MARK));
reg_varl(intern(lit("glob-nosort"), user_package), num_fast(GLOB_NOSORT));
reg_varl(intern(lit("glob-nocheck"), user_package), num_fast(GLOB_NOCHECK));
reg_varl(intern(lit("glob-noescape"), user_package), num_fast(GLOB_NOESCAPE));
#ifdef GLOB_PERIOD
reg_varl(intern(lit("glob-period"), user_package), num_fast(GLOB_PERIOD));
#endif
#ifdef GLOB_ALTDIRFUNC
reg_varl(intern(lit("glob-altdirfunc"), user_package), num_fast(GLOB_ALTDIRFUNC));
#endif
#ifdef GLOB_BRACE
reg_varl(intern(lit("glob-brace"), user_package), num_fast(GLOB_BRACE));
#endif
#ifdef GLOB_NOMAGIC
reg_varl(intern(lit("glob-nomagic"), user_package), num_fast(GLOB_NOMAGIC));
#endif
#ifdef GLOB_TILDE
reg_varl(intern(lit("glob-tilde"), user_package), num_fast(GLOB_TILDE));
#endif
#ifdef GLOB_TILDE_CHECK
reg_varl(intern(lit("glob-tilde-check"), user_package), num_fast(GLOB_TILDE_CHECK));
#endif
#ifdef GLOB_ONLYDIR
reg_varl(intern(lit("glob-onlydir"), user_package), num_fast(GLOB_ONLYDIR));
#endif
}
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