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/* fnprint.c -- print a list of file names
Copyright (C) 1986, 1995-1996, 2007-2011 Free Software Foundation, Inc.
Written by Greg McGary <gkm@gnu.ai.mit.edu>
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, 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/>.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <alloca.h>
#include <unistd.h>
#include <string.h>
#include <pathmax.h>
#include <error.h>
#include "idfile.h"
#include "xnls.h"
#include "iduglobal.h"
static char const *root_name (char const *path);
static char const *suff_name (char const *path);
static int common_prefix_suffix (struct file_link const *flink_1,
struct file_link const *flink_2);
extern void usage (void);
static struct file_link *cw_dlink;
/* Return the file name with the suffix stripped off. */
static char const *
root_name (char const *file_name)
{
static char file_name_buffer[BUFSIZ];
char const *dot = strrchr (file_name, '.');
if (dot)
{
int length = dot - file_name;
strncpy (file_name_buffer, file_name, length);
file_name_buffer[length] = '\0';
}
else
strcpy (file_name_buffer, file_name);
return file_name_buffer;
}
/* Return the suffix, including the dot, or an empty string if there
is no suffix. */
static char const *
suff_name (char const *file_name)
{
char const *dot = strrchr (file_name, '.');
return dot ? dot : "";
}
/* common_prefix_suffix returns non-zero if two file names have a
fully common directory prefix and a common suffix (i.e., they're
eligible for coalescing with brace notation. */
static int
common_prefix_suffix (struct file_link const *flink_1, struct file_link const *flink_2)
{
return (flink_1->fl_parent == flink_2->fl_parent
&& strequ (suff_name (flink_1->fl_name), suff_name (flink_2->fl_name)));
}
void
print_filenames (struct file_link **flinkv, enum separator_style separator_style)
{
struct file_link const *arg;
struct file_link const *dlink;
int brace_is_open = 0;
char *file_name = alloca (sizeof(char) * PATH_MAX);
while (*flinkv)
{
arg = *flinkv++;
if (*flinkv && (separator_style == ss_braces)
&& common_prefix_suffix (arg, *flinkv))
{
if (brace_is_open)
printf (",%s", root_name (arg->fl_name));
else
{
dlink = arg->fl_parent;
if (dlink && dlink != cw_dlink)
{
maybe_relative_file_name (file_name, dlink, cw_dlink);
fputs (file_name, stdout);
putchar ('/');
}
printf ("{%s", root_name (arg->fl_name));
}
brace_is_open = 1;
}
else
{
if (brace_is_open)
printf (",%s}%s", root_name (arg->fl_name), suff_name (arg->fl_name));
else
{
maybe_relative_file_name (file_name, arg, cw_dlink);
fputs (file_name, stdout);
}
brace_is_open = 0;
if (*flinkv)
{
if (separator_style == ss_newline)
putchar ('\n');
else
putchar (' ');
}
}
}
putchar ('\n');
}
enum separator_style
parse_separator_style (char const *arg)
{
MAYBE_RETURN_PREFIX_MATCH (arg, "braces", ss_braces);
MAYBE_RETURN_PREFIX_MATCH (arg, "space", ss_space);
MAYBE_RETURN_PREFIX_MATCH (arg, "newline", ss_newline);
error (0, 0, _("invalid `--separator' style: `%s'"), arg);
usage ();
return ss_bogus;
}
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