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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2002-2025 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#include <mailutils/mailutils.h>
#include <mailutils/locus.h>
#include "tesh.h"
static int
getnum (char const *arg, unsigned *ret)
{
char *end;
unsigned long x = strtoul (arg, &end, 10);
if (*end)
{
mu_error ("bad number: %s", arg);
return -1;
}
*ret = x;
return 0;
}
static int
com_retreat (int argc, char **argv, mu_assoc_t options, void *env)
{
mu_linetrack_t trk = env;
unsigned x;
if (getnum (argv[1], &x) == 0)
{
int rc = mu_linetrack_retreat (trk, x);
if (rc == ERANGE)
mu_error ("retreat count too big");
else if (rc)
mu_diag_funcall (MU_DIAG_ERROR, "mu_linetrack_retreat", argv[1], rc);
}
return 0;
}
static int
com_origin (int argc, char **argv, mu_assoc_t options, void *env)
{
mu_linetrack_t trk = env;
int rc;
struct mu_locus_point pt;
pt.mu_file = argv[1];
if (getnum (argv[2], &pt.mu_line))
return 0;
if (getnum (argv[3], &pt.mu_col))
return 0;
rc = mu_linetrack_origin (trk, &pt);
if (rc)
mu_diag_funcall (MU_DIAG_ERROR, "mu_linetrack_origin", NULL, rc);
return 0;
}
static int
com_line (int argc, char **argv, mu_assoc_t options, void *env)
{
mu_linetrack_t trk = env;
int rc;
struct mu_locus_point pt = MU_LOCUS_POINT_INITIALIZER;
if (getnum (argv[1], &pt.mu_line))
return 0;
rc = mu_linetrack_origin (trk, &pt);
if (rc)
mu_diag_funcall (MU_DIAG_ERROR, "mu_linetrack_origin", NULL, rc);
return 0;
}
static int
com_rebase (int argc, char **argv, mu_assoc_t options, void *env)
{
mu_linetrack_t trk = env;
int rc;
struct mu_locus_point pt;
pt.mu_file = argv[1];
if (getnum (argv[2], &pt.mu_line))
return 0;
if (getnum (argv[3], &pt.mu_col))
return 0;
rc = mu_linetrack_rebase (trk, &pt);
if (rc)
mu_diag_funcall (MU_DIAG_ERROR, "mu_linetrack_rebase", NULL, rc);
return 0;
}
static int
com_point (int argc, char **argv, mu_assoc_t options, void *env)
{
mu_linetrack_t trk = env;
struct mu_locus_range lr = MU_LOCUS_RANGE_INITIALIZER;
int rc;
rc = mu_linetrack_locus (trk, &lr.beg);
if (rc)
mu_diag_funcall (MU_DIAG_ERROR, "mu_linetrack_locus", NULL, rc);
else
{
mu_stream_lprintf (mu_strout, &lr, "%s\n", argv[0]);
mu_locus_range_deinit (&lr);
}
return 0;
}
static int
com_bol_p (int argc, char **argv, mu_assoc_t options, void *env)
{
mu_linetrack_t trk = env;
mu_printf ("%d\n", mu_linetrack_at_bol (trk));
return 0;
}
static int
com_stat (int argc, char **argv, mu_assoc_t options, void *env)
{
mu_linetrack_t trk = env;
int rc;
struct mu_linetrack_stat st;
rc = mu_linetrack_stat (trk, &st);
if (rc)
mu_diag_funcall (MU_DIAG_ERROR, "mu_linetrack_stat", NULL, rc);
else
{
mu_printf ("n_files=%zu\n", st.n_files);
mu_printf ("n_lines=%zu\n", st.n_lines);
mu_printf ("n_chars=%zu\n", st.n_chars);
}
return 0;
}
static int
lineproc (int argc, char **argv, mu_assoc_t options, void *env)
{
char *buf = argv[0];
mu_linetrack_t trk = env;
struct mu_locus_range lr = MU_LOCUS_RANGE_INITIALIZER;
char *tok;
if (buf[0] == 0)
return 0;
if (buf[0] == '.')
{
/* command escape */
memmove (buf, buf + 1, strlen (buf));
return MU_ERR_USER0;
}
mu_c_str_unescape (buf, "\\\n", "\\n", &tok);
mu_linetrack_advance (trk, &lr, tok, strlen (tok));
free (tok);
mu_stream_lprintf (mu_strout, &lr, "%s\n", buf);
mu_locus_range_deinit (&lr);
return 0;
}
static struct mu_tesh_command comtab[] = {
{ "__LINEPROC__", "", lineproc },
{ "retreat", "COUNT", com_retreat },
{ "origin", "FILE LINE COL", com_origin },
{ "line", "NUMBER", com_line },
{ "point", "NUMBER", com_point },
{ "rebase", "FILE LINE COL", com_rebase },
{ "bol", "", com_bol_p },
{ "stat", "", com_stat },
{ NULL }
};
int
main (int argc, char **argv)
{
unsigned long max_lines;
char *end;
mu_linetrack_t trk;
mu_tesh_init (argv[0]);
if (argc != 3)
{
mu_error ("usage: %s FILE LINES", mu_program_name);
return 1;
}
max_lines = strtoul (argv[2], &end, 10);
if (*end || max_lines == 0)
{
mu_error ("invalid number of lines");
return 1;
}
MU_ASSERT (mu_linetrack_create (&trk, argv[1], max_lines));
mu_tesh_read_and_eval (argc - 3, argv + 3, comtab, trk);
mu_linetrack_destroy (&trk);
return 0;
}
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