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-rw-r--r--src/diffviewer/search.c283
1 files changed, 283 insertions, 0 deletions
diff --git a/src/diffviewer/search.c b/src/diffviewer/search.c
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+++ b/src/diffviewer/search.c
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+/*
+ Search functions for diffviewer.
+
+ Copyright (C) 2010-2022
+ 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;
+
+/*** 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);
+ exp = g_string_free (tmp, FALSE);
+ }
+#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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