cfg_format.c
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/* cfg_print.c -- convert configuration parse tree to human-readable format.
Copyright (C) 2007 Free Software Foundation, Inc.
GNU Mailutils 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, 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 <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <mailutils/stream.h>
#include <mailutils/error.h>
#include <mailutils/cfg.h>
#include <mailutils/argcv.h>
#include <mailutils/nls.h>
struct tree_print
{
unsigned level;
mu_stream_t stream;
char *buf;
size_t bufsize;
};
static void
format_level (struct tree_print *tp)
{
int i;
for (i = 0; i < tp->level; i++)
mu_stream_sequential_write (tp->stream, " ", 2);
}
static void
format_label (struct tree_print *tp, const char *label)
{
size_t size;
int quote;
char *p;
size = mu_argcv_quoted_length (label, "e);
if (quote)
size += 2;
size++;
if (size > tp->bufsize)
{
p = realloc (tp->buf, size);
if (!p)
{
mu_stream_sequential_printf (tp->stream, "%s\n",
_("ERROR: not enough memory"));
return;
}
tp->bufsize = size;
tp->buf = p;
}
p = tp->buf;
if (quote)
{
tp->buf[0] = '"';
tp->buf[size-2] = '"';
p++;
}
tp->buf[size-1] = 0;
mu_argcv_quote_copy (p, label);
mu_stream_sequential_write (tp->stream, tp->buf, size - 1);
}
static int
format_node (const mu_cfg_node_t *node, void *data)
{
struct tree_print *tp = data;
if (node->locus.file)
mu_stream_sequential_printf (tp->stream, "# %d \"%s\"\n",
node->locus.line, node->locus.file);
format_level (tp);
switch (node->type)
{
case mu_cfg_node_undefined:
mu_stream_sequential_printf (tp->stream, "%s",
_("ERROR: undefined statement"));
break;
case mu_cfg_node_tag:
{
mu_stream_sequential_write (tp->stream, node->tag_name,
strlen (node->tag_name));
if (node->tag_label)
{
mu_stream_sequential_write (tp->stream, " ", 1);
format_label (tp, node->tag_label);
}
mu_stream_sequential_write (tp->stream, " {", 2);
tp->level++;
}
break;
case mu_cfg_node_param:
mu_stream_sequential_write (tp->stream, node->tag_name,
strlen (node->tag_name));
if (node->tag_label)
{
mu_stream_sequential_write (tp->stream, " ", 1);
format_label (tp, node->tag_label);
mu_stream_sequential_write (tp->stream, ";", 1);
}
break;
}
mu_stream_sequential_write (tp->stream, "\n", 1);
return MU_CFG_ITER_OK;
}
static int
format_node_end (const mu_cfg_node_t *node, void *data)
{
struct tree_print *tp = data;
tp->level--;
format_level (tp);
mu_stream_sequential_write (tp->stream, "};\n", 3);
return MU_CFG_ITER_OK;
}
void
mu_cfg_format_tree (mu_stream_t stream, mu_cfg_tree_t *tree)
{
struct tree_print t;
t.level = 0;
t.stream = stream;
t.buf = NULL;
t.bufsize = 0;
mu_cfg_preorder (tree->node, format_node, format_node_end, &t);
free (t.buf);
}