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122 lines
3.0 KiB
122 lines
3.0 KiB
/*
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* tcglob.c -- simple iterator over a path collection expressed through
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* glob (7) semantic (implementation).
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* (C) 2007-2010 - Francesco Romani <fromani -at- gmail -dot- com>
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*
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* This file is part of transcode, a video stream processing tool.
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*
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* transcode is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* transcode is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include <glob.h>
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#include "libtc.h"
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#include "tcglob.h"
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struct tcglob_ {
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const char *pattern;
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glob_t glob;
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int current;
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};
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#define GLOB_NOERROR 0
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TCGlob *tc_glob_open(const char *pattern, uint32_t flags)
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{
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TCGlob *tcg = NULL;
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flags = GLOB_ERR; /* flags intentionally overridden */
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if (pattern != NULL && strlen(pattern) > 0) {
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tcg = tc_malloc(sizeof(TCGlob));
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if (tcg != NULL) {
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int err = 0;
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tcg->pattern = NULL;
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err = glob(pattern, flags, NULL, &(tcg->glob));
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switch (err) {
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case GLOB_NOMATCH:
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tcg->pattern = tc_strdup(pattern); // XXX
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tcg->current = -1;
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break;
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case GLOB_NOERROR:
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tcg->current = 0;
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break;
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default: /* any other error: clean it up */
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tc_log_error(__FILE__, "internal glob failed (code=%i)",
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err);
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tc_free(tcg);
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tcg = NULL;
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}
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}
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}
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return tcg;
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}
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const char *tc_glob_next(TCGlob *tcg)
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{
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const char *ret = NULL;
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if (tcg != NULL) {
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if (tcg->current == -1) {
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ret = tcg->pattern;
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}
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if (tcg->current < tcg->glob.gl_pathc) {
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ret = tcg->glob.gl_pathv[tcg->current];
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}
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tcg->current++;
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}
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return ret;
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}
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int tc_glob_has_more(TCGlob *tcg)
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{
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if (tcg == NULL) {
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return 0;
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}
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return (tcg->current < tcg->glob.gl_pathc) + (tcg->pattern != NULL);
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}
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int tc_glob_close(TCGlob *tcg)
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{
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if (tcg != NULL) {
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if (tcg->pattern != NULL) {
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tc_free((void*)tcg->pattern);
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tcg->pattern = NULL;
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}
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globfree(&(tcg->glob));
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tc_free(tcg);
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}
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return TC_OK;
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}
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/*************************************************************************/
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/*
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* Local variables:
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* c-file-style: "stroustrup"
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* c-file-offsets: ((case-label . *) (statement-case-intro . *))
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* indent-tabs-mode: nil
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* End:
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*
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* vim: expandtab shiftwidth=4:
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*/
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