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/*
Search functions for diffviewer.
Copyright (C) 2010-2024
Free Software Foundation, Inc.
Written by:
Slava Zanko <slavazanko@gmail.com>, 2010.
Andrew Borodin <aborodin@vmail.ru>, 2012-2022
This file is part of the Midnight Commander.
The Midnight Commander 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 of the License,
or (at your option) any later version.
The Midnight Commander 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 "lib/global.h"
#include "lib/strutil.h"
#include "lib/tty/key.h"
#include "lib/widget.h"
#ifdef HAVE_CHARSET
#include "lib/charsets.h"
#endif
#include "src/history.h"
#include "internal.h"
/*** global variables ****************************************************************************/
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
typedef struct mcdiffview_search_options_struct
{
mc_search_type_t type;
gboolean case_sens;
gboolean backwards;
gboolean whole_words;
gboolean all_codepages;
} mcdiffview_search_options_t;
/*** forward declarations (file scope functions) *************************************************/
/*** file scope variables ************************************************************************/
static mcdiffview_search_options_t mcdiffview_search_options = {
.type = MC_SEARCH_T_NORMAL,
.case_sens = FALSE,
.backwards = FALSE,
.whole_words = FALSE,
.all_codepages = FALSE,
};
/* --------------------------------------------------------------------------------------------- */
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
static gboolean
mcdiffview_dialog_search (WDiff * dview)
{
char *exp = NULL;
int qd_result;
size_t num_of_types = 0;
gchar **list_of_types;
list_of_types = mc_search_get_types_strings_array (&num_of_types);
{
quick_widget_t quick_widgets[] = {
/* *INDENT-OFF* */
QUICK_LABELED_INPUT (N_("Enter search string:"), input_label_above, INPUT_LAST_TEXT,
MC_HISTORY_SHARED_SEARCH, &exp, NULL, FALSE, FALSE,
INPUT_COMPLETE_NONE),
QUICK_SEPARATOR (TRUE),
QUICK_START_COLUMNS,
QUICK_RADIO (num_of_types, (const char **) list_of_types,
(int *) &mcdiffview_search_options.type, NULL),
QUICK_NEXT_COLUMN,
QUICK_CHECKBOX (N_("Cas&e sensitive"), &mcdiffview_search_options.case_sens, NULL),
QUICK_CHECKBOX (N_("&Backwards"), &mcdiffview_search_options.backwards, NULL),
QUICK_CHECKBOX (N_("&Whole words"), &mcdiffview_search_options.whole_words, NULL),
#ifdef HAVE_CHARSET
QUICK_CHECKBOX (N_("&All charsets"), &mcdiffview_search_options.all_codepages, NULL),
#endif
QUICK_STOP_COLUMNS,
QUICK_BUTTONS_OK_CANCEL,
QUICK_END
/* *INDENT-ON* */
};
WRect r = { -1, -1, 0, 58 };
quick_dialog_t qdlg = {
r, N_("Search"), "[Input Line Keys]",
quick_widgets, NULL, NULL
};
qd_result = quick_dialog (&qdlg);
}
g_strfreev (list_of_types);
if (qd_result == B_CANCEL || exp[0] == '\0')
{
g_free (exp);
return FALSE;
}
#ifdef HAVE_CHARSET
{
GString *tmp;
tmp = str_convert_to_input (exp);
g_free (exp);
if (tmp != NULL)
exp = g_string_free (tmp, FALSE);
else
exp = g_strdup ("");
}
#endif
g_free (dview->search.last_string);
dview->search.last_string = exp;
return TRUE;
}
/* --------------------------------------------------------------------------------------------- */
static gboolean
mcdiffview_do_search_backward (WDiff * dview)
{
ssize_t ind;
if (dview->search.last_accessed_num_line < 0)
{
dview->search.last_accessed_num_line = -1;
return FALSE;
}
if ((size_t) dview->search.last_accessed_num_line >= dview->a[dview->ord]->len)
dview->search.last_accessed_num_line = (ssize_t) dview->a[dview->ord]->len;
for (ind = --dview->search.last_accessed_num_line; ind >= 0; ind--)
{
DIFFLN *p;
p = (DIFFLN *) & g_array_index (dview->a[dview->ord], DIFFLN, (size_t) ind);
if (p->u.len == 0)
continue;
if (mc_search_run (dview->search.handle, p->p, 0, p->u.len, NULL))
{
dview->skip_rows = dview->search.last_found_line =
dview->search.last_accessed_num_line = ind;
return TRUE;
}
}
return FALSE;
}
/* --------------------------------------------------------------------------------------------- */
static gboolean
mcdiffview_do_search_forward (WDiff * dview)
{
size_t ind;
if (dview->search.last_accessed_num_line < 0)
dview->search.last_accessed_num_line = -1;
else if ((size_t) dview->search.last_accessed_num_line >= dview->a[dview->ord]->len)
{
dview->search.last_accessed_num_line = (ssize_t) dview->a[dview->ord]->len;
return FALSE;
}
for (ind = (size_t)++ dview->search.last_accessed_num_line; ind < dview->a[dview->ord]->len;
ind++)
{
DIFFLN *p;
p = (DIFFLN *) & g_array_index (dview->a[dview->ord], DIFFLN, ind);
if (p->u.len == 0)
continue;
if (mc_search_run (dview->search.handle, p->p, 0, p->u.len, NULL))
{
dview->skip_rows = dview->search.last_found_line =
dview->search.last_accessed_num_line = (ssize_t) ind;
return TRUE;
}
}
return FALSE;
}
/* --------------------------------------------------------------------------------------------- */
static void
mcdiffview_do_search (WDiff * dview)
{
gboolean present_result = FALSE;
tty_enable_interrupt_key ();
if (mcdiffview_search_options.backwards)
{
present_result = mcdiffview_do_search_backward (dview);
}
else
{
present_result = mcdiffview_do_search_forward (dview);
}
tty_disable_interrupt_key ();
if (!present_result)
{
dview->search.last_found_line = -1;
query_dialog (_("Search"), _(STR_E_NOTFOUND), D_NORMAL, 1, _("&Dismiss"));
}
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
void
dview_search_cmd (WDiff * dview)
{
if (dview->dsrc != DATA_SRC_MEM)
{
error_dialog (_("Search"), _("Search is disabled"));
return;
}
if (!mcdiffview_dialog_search (dview))
return;
mc_search_free (dview->search.handle);
#ifdef HAVE_CHARSET
dview->search.handle = mc_search_new (dview->search.last_string, cp_source);
#else
dview->search.handle = mc_search_new (dview->search.last_string, NULL);
#endif
if (dview->search.handle == NULL)
return;
dview->search.handle->search_type = mcdiffview_search_options.type;
#ifdef HAVE_CHARSET
dview->search.handle->is_all_charsets = mcdiffview_search_options.all_codepages;
#endif
dview->search.handle->is_case_sensitive = mcdiffview_search_options.case_sens;
dview->search.handle->whole_words = mcdiffview_search_options.whole_words;
mcdiffview_do_search (dview);
}
/* --------------------------------------------------------------------------------------------- */
void
dview_continue_search_cmd (WDiff * dview)
{
if (dview->dsrc != DATA_SRC_MEM)
error_dialog (_("Search"), _("Search is disabled"));
else if (dview->search.handle == NULL)
dview_search_cmd (dview);
else
mcdiffview_do_search (dview);
}
/* --------------------------------------------------------------------------------------------- */
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