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https://github.com/libguestfs/libguestfs.git
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119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
/* libguestfs
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* Copyright (C) 2013 Red Hat Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* An expandable NULL-terminated vector of strings (like C<argv>).
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*
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* Use the C<DECLARE_STRINGSBUF> macro to declare the stringsbuf.
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*
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* Note: Don't confuse this with stringsbuf in the daemon which
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* is a different type with different methods.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include "guestfs.h"
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#include "guestfs-internal.h"
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/**
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* Add a string to the end of the list.
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*
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* This doesn't call L<strdup(3)> on the string, so the string itself
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* is stored inside the vector.
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*/
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void
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guestfs_int_add_string_nodup (guestfs_h *g, struct stringsbuf *sb, char *str)
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{
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if (sb->size >= sb->alloc) {
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sb->alloc += 64;
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sb->argv = safe_realloc (g, sb->argv, sb->alloc * sizeof (char *));
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}
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sb->argv[sb->size] = str;
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sb->size++;
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}
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/**
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* Add a string to the end of the list.
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*
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* This makes a copy of the string.
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*/
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void
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guestfs_int_add_string (guestfs_h *g, struct stringsbuf *sb, const char *str)
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{
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guestfs_int_add_string_nodup (g, sb, safe_strdup (g, str));
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}
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/**
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* Add a string to the end of the list.
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*
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* Uses an sprintf-like format string when creating the string.
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*/
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void
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guestfs_int_add_sprintf (guestfs_h *g, struct stringsbuf *sb,
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const char *fs, ...)
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{
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va_list args;
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char *str;
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int r;
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va_start (args, fs);
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r = vasprintf (&str, fs, args);
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va_end (args);
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if (r == -1)
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g->abort_cb ();
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guestfs_int_add_string_nodup (g, sb, str);
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}
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/**
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* Finish the string buffer.
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*
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* This adds the terminating NULL to the end of the vector.
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*/
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void
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guestfs_int_end_stringsbuf (guestfs_h *g, struct stringsbuf *sb)
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{
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guestfs_int_add_string_nodup (g, sb, NULL);
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}
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/**
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* Free the string buffer and the strings.
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*/
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void
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guestfs_int_free_stringsbuf (struct stringsbuf *sb)
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{
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size_t i;
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if (sb->argv) {
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for (i = 0; i < sb->size; ++i)
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free (sb->argv[i]);
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}
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free (sb->argv);
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}
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void
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guestfs_int_cleanup_free_stringsbuf (struct stringsbuf *sb)
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{
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guestfs_int_free_stringsbuf (sb);
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}
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