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-rw-r--r--lib/libcfg/pack_argv.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/lib/libcfg/pack_argv.c b/lib/libcfg/pack_argv.c
new file mode 100644
index 0000000..4d90171
--- /dev/null
+++ b/lib/libcfg/pack_argv.c
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * Copyright (C) 2018 - David Oberhollenzer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+
+#include "libcfg.h"
+
+int pack_argv(char *str)
+{
+ char *dst, *start;
+ int count = 0;
+
+ dst = str;
+
+ for (;;) {
+ while (*str == ' ')
+ ++str;
+
+ if (*str == '\0')
+ break;
+
+ if (*str == '"') {
+ start = dst;
+ *(dst++) = *(str++);
+
+ while (*str != '"') {
+ if (*str == '\0')
+ goto fail_str;
+ if (str[0] == '\\' && str[1] != '\0')
+ *(dst++) = *(str++);
+ *(dst++) = *(str++);
+ }
+
+ *(dst++) = *(str++);
+
+ if (*str != ' ' && *str != '\0')
+ goto fail_str;
+ if (*str == ' ')
+ ++str;
+
+ *(dst++) = '\0';
+
+ if (unescape(start))
+ goto fail_str;
+
+ dst = start + strlen(start) + 1;
+ } else {
+ while (*str != '\0' && *str != ' ')
+ *(dst++) = *(str++);
+ if (*str == ' ') {
+ ++str;
+ *(dst++) = '\0';
+ }
+ }
+
+ ++count;
+ }
+
+ *dst = '\0';
+ return count;
+fail_str:
+ errno = EINVAL;
+ return -1;
+}