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#include <mailutils/mailutils.h>
#include <mailutils/locus.h>
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 void
com_retreat (mu_linetrack_t trk, size_t argc, char **argv)
{
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);
}
}
static void
com_origin (mu_linetrack_t trk, size_t argc, char **argv)
{
int rc;
struct mu_locus_point pt;
pt.mu_file = argv[1];
if (getnum (argv[2], &pt.mu_line))
return;
if (getnum (argv[3], &pt.mu_col))
return;
rc = mu_linetrack_origin (trk, &pt);
if (rc)
mu_diag_funcall (MU_DIAG_ERROR, "mu_linetrack_origin", NULL, rc);
}
static void
com_line (mu_linetrack_t trk, size_t argc, char **argv)
{
int rc;
struct mu_locus_point pt = MU_LOCUS_POINT_INITIALIZER;
if (getnum (argv[1], &pt.mu_line))
return;
rc = mu_linetrack_origin (trk, &pt);
if (rc)
mu_diag_funcall (MU_DIAG_ERROR, "mu_linetrack_origin", NULL, rc);
}
static void
com_rebase (mu_linetrack_t trk, size_t argc, char **argv)
{
int rc;
struct mu_locus_point pt;
pt.mu_file = argv[1];
if (getnum (argv[2], &pt.mu_line))
return;
if (getnum (argv[3], &pt.mu_col))
return;
rc = mu_linetrack_rebase (trk, &pt);
if (rc)
mu_diag_funcall (MU_DIAG_ERROR, "mu_linetrack_rebase", NULL, rc);
}
static void
com_point (mu_linetrack_t trk, size_t argc, char **argv)
{
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);
}
}
static void
com_bol_p (mu_linetrack_t trk, size_t argc, char **argv)
{
mu_printf ("%d\n", mu_linetrack_at_bol (trk));
}
static void
com_stat (mu_linetrack_t trk, size_t argc, char **argv)
{
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);
}
}
struct command
{
char *name;
size_t argc;
void (*fun) (mu_linetrack_t trk, size_t argc, char **argv);
};
static struct command comtab[] = {
{ "retreat", 2, com_retreat },
{ "origin", 4, com_origin },
{ "line", 2, com_line },
{ "point", 1, com_point },
{ "rebase", 4, com_rebase },
{ "bol", 1, com_bol_p },
{ "stat", 1, com_stat },
{ NULL }
};
int
main (int argc, char **argv)
{
unsigned long max_lines;
char *end;
mu_linetrack_t trk;
int rc;
char *buf = NULL;
size_t size, n;
struct mu_wordsplit ws;
int wsf = MU_WRDSF_NOVAR | MU_WRDSF_NOCMD
| MU_WRDSF_SHOWERR | MU_WRDSF_ENOMEMABRT;
mu_set_program_name (argv[0]);
mu_stdstream_setup (MU_STDSTREAM_RESET_NONE);
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));
while ((rc = mu_stream_getline (mu_strin, &buf, &size, &n)) == 0 && n > 0)
{
char *tok;
n = mu_rtrim_class (buf, MU_CTYPE_SPACE);
if (n == 0)
continue;
if (buf[0] == '#')
{
struct command *com;
mu_wordsplit (buf+1, &ws, wsf);
wsf |= MU_WRDSF_REUSE;
for (com = comtab; com->name; com++)
if (strcmp (com->name, ws.ws_wordv[0]) == 0
&& com->argc == ws.ws_wordc)
break;
if (com->name)
com->fun (trk, ws.ws_wordc, ws.ws_wordv);
else
mu_error ("unrecognized command");
}
else
{
struct mu_locus_range lr = MU_LOCUS_RANGE_INITIALIZER;
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);
}
}
mu_linetrack_destroy (&trk);
return 0;
}
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