Adding upstream version 3:4.8.29.upstream/3%4.8.29upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 283 insertions, 0 deletions

diff --git a/src/diffviewer/search.c b/src/diffviewer/search.c
new file mode 100644
index 0000000..6521c98
--- /dev/null
+++ b/src/diffviewer/search.c
@@ -0,0 +1,283 @@
+/*
+   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);
+}
+
+/* --------------------------------------------------------------------------------------------- */