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-rw-r--r--lib/search.h180
-rw-r--r--lib/search/Makefile.am12
-rw-r--r--lib/search/Makefile.in758
-rw-r--r--lib/search/glob.c203
-rw-r--r--lib/search/hex.c229
-rw-r--r--lib/search/internal.h82
-rw-r--r--lib/search/lib.c229
-rw-r--r--lib/search/normal.c106
-rw-r--r--lib/search/regex.c1086
-rw-r--r--lib/search/search.c521
10 files changed, 3406 insertions, 0 deletions
diff --git a/lib/search.h b/lib/search.h
new file mode 100644
index 0000000..3432a55
--- /dev/null
+++ b/lib/search.h
@@ -0,0 +1,180 @@
+#ifndef MC__SEARCH_H
+#define MC__SEARCH_H
+
+#include <config.h>
+
+#include "lib/global.h" /* <glib.h> */
+
+#include <sys/types.h>
+
+#ifdef SEARCH_TYPE_PCRE
+#include <pcre.h>
+#endif
+
+/*** typedefs(not structures) and defined constants **********************************************/
+
+typedef enum mc_search_cbret_t mc_search_cbret_t;
+
+typedef mc_search_cbret_t (*mc_search_fn) (const void *user_data, gsize char_offset,
+ int *current_char);
+typedef mc_search_cbret_t (*mc_update_fn) (const void *user_data, gsize char_offset);
+
+#define MC_SEARCH__NUM_REPLACE_ARGS 64
+
+#ifdef SEARCH_TYPE_GLIB
+#define mc_search_matchinfo_t GMatchInfo
+#else
+#define mc_search_matchinfo_t pcre_extra
+#endif
+
+/*** enums ***************************************************************************************/
+
+typedef enum
+{
+ MC_SEARCH_E_OK = 0,
+ MC_SEARCH_E_INPUT,
+ MC_SEARCH_E_REGEX_COMPILE,
+ MC_SEARCH_E_REGEX,
+ MC_SEARCH_E_REGEX_REPLACE,
+ MC_SEARCH_E_NOTFOUND,
+ MC_SEARCH_E_ABORT
+} mc_search_error_t;
+
+typedef enum
+{
+ MC_SEARCH_T_INVALID = -1,
+ MC_SEARCH_T_NORMAL,
+ MC_SEARCH_T_REGEX,
+ MC_SEARCH_T_HEX,
+ MC_SEARCH_T_GLOB
+} mc_search_type_t;
+
+enum mc_search_cbret_t
+{
+ MC_SEARCH_CB_OK = 0,
+ MC_SEARCH_CB_INVALID = -1,
+ MC_SEARCH_CB_ABORT = -2,
+ MC_SEARCH_CB_SKIP = -3,
+ MC_SEARCH_CB_NOTFOUND = -4
+};
+
+/*** structures declarations (and typedefs of structures)*****************************************/
+
+typedef struct mc_search_struct
+{
+ /* public input data */
+
+#ifdef HAVE_CHARSET
+ /* search in all charsets */
+ gboolean is_all_charsets;
+#endif
+
+ /* case sensitive search */
+ gboolean is_case_sensitive;
+
+ /* search only once. Is this for replace? */
+ gboolean is_once_only;
+
+ /* search only whole words (from begin to end). Used only with NORMAL search type */
+ gboolean whole_words;
+
+ /* search entire string (from begin to end). Used only with GLOB search type */
+ gboolean is_entire_line;
+
+ /* function, used for getting data. NULL if not used */
+ mc_search_fn search_fn;
+
+ /* function, used for updatin current search status. NULL if not used */
+ mc_update_fn update_fn;
+
+ /* type of search */
+ mc_search_type_t search_type;
+
+ /* public output data */
+
+ /* some data for normal */
+ off_t normal_offset;
+
+ off_t start_buffer;
+ /* some data for regexp */
+ int num_results;
+ gboolean is_utf8;
+ mc_search_matchinfo_t *regex_match_info;
+ GString *regex_buffer;
+#ifdef SEARCH_TYPE_PCRE
+ int iovector[MC_SEARCH__NUM_REPLACE_ARGS * 2];
+#endif /* SEARCH_TYPE_PCRE */
+
+ /* private data */
+
+ struct
+ {
+ GPtrArray *conditions;
+ gboolean result;
+ } prepared;
+
+ /* original search string */
+ struct
+ {
+ GString *str;
+#ifdef HAVE_CHARSET
+ gchar *charset;
+#endif
+ } original;
+
+ /* error code after search */
+ mc_search_error_t error;
+ gchar *error_str;
+} mc_search_t;
+
+typedef struct mc_search_type_str_struct
+{
+ const char *str;
+ mc_search_type_t type;
+} mc_search_type_str_t;
+
+/*** global variables defined in .c file *********************************************************/
+
+/* Error messages */
+extern const char *STR_E_NOTFOUND;
+extern const char *STR_E_UNKNOWN_TYPE;
+extern const char *STR_E_RPL_NOT_EQ_TO_FOUND;
+extern const char *STR_E_RPL_INVALID_TOKEN;
+
+/*** declarations of public functions ************************************************************/
+
+mc_search_t *mc_search_new (const gchar * original, const gchar * original_charset);
+
+mc_search_t *mc_search_new_len (const gchar * original, gsize original_len,
+ const gchar * original_charset);
+
+void mc_search_free (mc_search_t * lc_mc_search);
+
+gboolean mc_search_prepare (mc_search_t * mc_search);
+
+gboolean mc_search_run (mc_search_t * mc_search, const void *user_data, gsize start_search,
+ gsize end_search, gsize * found_len);
+
+gboolean mc_search_is_type_avail (mc_search_type_t search_type);
+
+const mc_search_type_str_t *mc_search_types_list_get (size_t * num);
+
+GString *mc_search_prepare_replace_str (mc_search_t * mc_search, GString * replace_str);
+char *mc_search_prepare_replace_str2 (mc_search_t * lc_mc_search, const char *replace_str);
+
+gboolean mc_search_is_fixed_search_str (const mc_search_t * lc_mc_search);
+
+gchar **mc_search_get_types_strings_array (size_t * num);
+
+gboolean mc_search (const gchar * pattern, const gchar * pattern_charset, const gchar * str,
+ mc_search_type_t type);
+
+int mc_search_getstart_result_by_num (mc_search_t * lc_mc_search, int lc_index);
+int mc_search_getend_result_by_num (mc_search_t * lc_mc_search, int lc_index);
+
+/* *INDENT-OFF* */
+void mc_search_set_error (mc_search_t * lc_mc_search, mc_search_error_t code, const gchar * format, ...)
+ G_GNUC_PRINTF (3, 4);
+/* *INDENT-ON* */
+
+#endif /* MC__SEARCH_H */
diff --git a/lib/search/Makefile.am b/lib/search/Makefile.am
new file mode 100644
index 0000000..ed9d3aa
--- /dev/null
+++ b/lib/search/Makefile.am
@@ -0,0 +1,12 @@
+noinst_LTLIBRARIES = libsearch.la
+
+libsearch_la_SOURCES = \
+ search.c \
+ internal.h \
+ lib.c \
+ normal.c \
+ regex.c \
+ glob.c \
+ hex.c
+
+AM_CPPFLAGS = -I$(top_srcdir) $(GLIB_CFLAGS) $(PCRE_CPPFLAGS)
diff --git a/lib/search/Makefile.in b/lib/search/Makefile.in
new file mode 100644
index 0000000..5558941
--- /dev/null
+++ b/lib/search/Makefile.in
@@ -0,0 +1,758 @@
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+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+
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+
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/search.Plo@am__quote@ # am--include-marker
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+ else \
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+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/lib/search/glob.c b/lib/search/glob.c
new file mode 100644
index 0000000..ae1b931
--- /dev/null
+++ b/lib/search/glob.c
@@ -0,0 +1,203 @@
+/*
+ Search text engine.
+ Glob-style pattern matching
+
+ Copyright (C) 2009-2022
+ Free Software Foundation, Inc.
+
+ Written by:
+ Slava Zanko <slavazanko@gmail.com>, 2009.
+
+ 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 "lib/global.h"
+#include "lib/strutil.h"
+#include "lib/search.h"
+#include "lib/strescape.h"
+
+#include "internal.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+/*** file scope type declarations ****************************************************************/
+
+/*** file scope variables ************************************************************************/
+
+/*** file scope functions ************************************************************************/
+
+static GString *
+mc_search__glob_translate_to_regex (const GString * astr)
+{
+ const char *str = astr->str;
+ GString *buff;
+ gsize loop;
+ gboolean inside_group = FALSE;
+
+ buff = g_string_sized_new (32);
+
+ for (loop = 0; loop < astr->len; loop++)
+ {
+ switch (str[loop])
+ {
+ case '*':
+ if (!strutils_is_char_escaped (str, &(str[loop])))
+ {
+ g_string_append (buff, inside_group ? ".*" : "(.*)");
+ continue;
+ }
+ break;
+ case '?':
+ if (!strutils_is_char_escaped (str, &(str[loop])))
+ {
+ g_string_append (buff, inside_group ? "." : "(.)");
+ continue;
+ }
+ break;
+ case ',':
+ if (!strutils_is_char_escaped (str, &(str[loop])))
+ {
+ g_string_append_c (buff, inside_group ? '|' : ',');
+ continue;
+ }
+ break;
+ case '{':
+ if (!strutils_is_char_escaped (str, &(str[loop])))
+ {
+ g_string_append_c (buff, '(');
+ inside_group = TRUE;
+ continue;
+ }
+ break;
+ case '}':
+ if (!strutils_is_char_escaped (str, &(str[loop])))
+ {
+ g_string_append_c (buff, ')');
+ inside_group = FALSE;
+ continue;
+ }
+ break;
+ case '+':
+ case '.':
+ case '$':
+ case '(':
+ case ')':
+ case '^':
+ g_string_append_c (buff, '\\');
+ break;
+ default:
+ break;
+ }
+ g_string_append_c (buff, str[loop]);
+ }
+ return buff;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static GString *
+mc_search__translate_replace_glob_to_regex (const char *str)
+{
+ GString *buff;
+ char cnt = '0';
+ gboolean escaped_mode = FALSE;
+
+ buff = g_string_sized_new (32);
+
+ while (*str != '\0')
+ {
+ char c = *str++;
+
+ switch (c)
+ {
+ case '\\':
+ if (!escaped_mode)
+ {
+ escaped_mode = TRUE;
+ g_string_append_c (buff, '\\');
+ continue;
+ }
+ break;
+ case '*':
+ case '?':
+ if (!escaped_mode)
+ {
+ g_string_append_c (buff, '\\');
+ c = ++cnt;
+ }
+ break;
+ case '&':
+ if (!escaped_mode)
+ g_string_append_c (buff, '\\');
+ break;
+ default:
+ break;
+ }
+ g_string_append_c (buff, c);
+ escaped_mode = FALSE;
+ }
+ return buff;
+}
+
+/*** public functions ****************************************************************************/
+
+void
+mc_search__cond_struct_new_init_glob (const char *charset, mc_search_t * lc_mc_search,
+ mc_search_cond_t * mc_search_cond)
+{
+ GString *tmp;
+
+ tmp = mc_search__glob_translate_to_regex (mc_search_cond->str);
+ g_string_free (mc_search_cond->str, TRUE);
+
+ if (lc_mc_search->is_entire_line)
+ {
+ g_string_prepend_c (tmp, '^');
+ g_string_append_c (tmp, '$');
+ }
+ mc_search_cond->str = tmp;
+
+ mc_search__cond_struct_new_init_regex (charset, lc_mc_search, mc_search_cond);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_search__run_glob (mc_search_t * lc_mc_search, const void *user_data,
+ gsize start_search, gsize end_search, gsize * found_len)
+{
+ return mc_search__run_regex (lc_mc_search, user_data, start_search, end_search, found_len);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+GString *
+mc_search_glob_prepare_replace_str (mc_search_t * lc_mc_search, GString * replace_str)
+{
+ GString *repl, *res;
+
+ repl = mc_search__translate_replace_glob_to_regex (replace_str->str);
+ res = mc_search_regex_prepare_replace_str (lc_mc_search, repl);
+ g_string_free (repl, TRUE);
+
+ return res;
+}
+
+/* --------------------------------------------------------------------------------------------- */
diff --git a/lib/search/hex.c b/lib/search/hex.c
new file mode 100644
index 0000000..40bae1e
--- /dev/null
+++ b/lib/search/hex.c
@@ -0,0 +1,229 @@
+/*
+ Search text engine.
+ HEX-style pattern matching
+
+ Copyright (C) 2009-2022
+ Free Software Foundation, Inc.
+
+ Written by:
+ Slava Zanko <slavazanko@gmail.com>, 2009.
+
+ 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/search.h"
+#include "lib/strescape.h"
+
+#include "internal.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+typedef enum
+{
+ MC_SEARCH_HEX_E_OK,
+ MC_SEARCH_HEX_E_NUM_OUT_OF_RANGE,
+ MC_SEARCH_HEX_E_INVALID_CHARACTER,
+ MC_SEARCH_HEX_E_UNMATCHED_QUOTES
+} mc_search_hex_parse_error_t;
+
+/*** file scope type declarations ****************************************************************/
+
+/*** file scope variables ************************************************************************/
+
+/*** file scope functions ************************************************************************/
+
+static GString *
+mc_search__hex_translate_to_regex (const GString * astr, mc_search_hex_parse_error_t * error_ptr,
+ int *error_pos_ptr)
+{
+ GString *buff;
+ const char *str;
+ gsize str_len;
+ gsize loop = 0;
+ mc_search_hex_parse_error_t error = MC_SEARCH_HEX_E_OK;
+
+ buff = g_string_sized_new (64);
+ str = astr->str;
+ str_len = astr->len;
+
+ while (loop < str_len && error == MC_SEARCH_HEX_E_OK)
+ {
+ unsigned int val;
+ int ptr;
+
+ if (g_ascii_isspace (str[loop]))
+ {
+ /* Eat-up whitespace between tokens. */
+ while (g_ascii_isspace (str[loop]))
+ loop++;
+ }
+ /* cppcheck-suppress invalidscanf */
+ else if (sscanf (str + loop, "%x%n", &val, &ptr) == 1)
+ {
+ if (val > 255)
+ error = MC_SEARCH_HEX_E_NUM_OUT_OF_RANGE;
+ else
+ {
+ g_string_append_printf (buff, "\\x%02X", val);
+ loop += ptr;
+ }
+ }
+ else if (str[loop] == '"')
+ {
+ gsize loop2;
+
+ loop2 = loop + 1;
+
+ while (loop2 < str_len)
+ {
+ if (str[loop2] == '"')
+ break;
+ if (str[loop2] == '\\' && loop2 + 1 < str_len)
+ loop2++;
+ g_string_append_c (buff, str[loop2]);
+ loop2++;
+ }
+
+ if (str[loop2] == '\0')
+ error = MC_SEARCH_HEX_E_UNMATCHED_QUOTES;
+ else
+ loop = loop2 + 1;
+ }
+ else
+ error = MC_SEARCH_HEX_E_INVALID_CHARACTER;
+ }
+
+ if (error != MC_SEARCH_HEX_E_OK)
+ {
+ g_string_free (buff, TRUE);
+ if (error_ptr != NULL)
+ *error_ptr = error;
+ if (error_pos_ptr != NULL)
+ *error_pos_ptr = loop;
+ return NULL;
+ }
+
+ return buff;
+}
+
+/*** public functions ****************************************************************************/
+
+void
+mc_search__cond_struct_new_init_hex (const char *charset, mc_search_t * lc_mc_search,
+ mc_search_cond_t * mc_search_cond)
+{
+ GString *tmp;
+ mc_search_hex_parse_error_t error = MC_SEARCH_HEX_E_OK;
+ int error_pos = 0;
+
+ /*
+ * We may be searching in binary data, which is often invalid UTF-8.
+ *
+ * We have to create a non UTF-8 regex (that is, G_REGEX_RAW) or else, as
+ * the data is invalid UTF-8, both GLib's PCRE and our
+ * mc_search__g_regex_match_full_safe() are going to fail us. The former by
+ * not finding all bytes, the latter by overwriting the supposedly invalid
+ * UTF-8 with NULs.
+ *
+ * To do this, we specify "ASCII" as the charset.
+ *
+ * In fact, we can specify any charset other than "UTF-8": any such charset
+ * will trigger G_REGEX_RAW (see [1]). The output of [2] will be the same
+ * for all charsets because it skips the \xXX symbols
+ * mc_search__hex_translate_to_regex() outputs.
+ *
+ * But "ASCII" is the best choice because a hex pattern may contain a
+ * quoted string: this way we know [2] will ignore any characters outside
+ * ASCII letters range (these ignored chars will be copied verbatim to the
+ * output and will match as-is; in other words, in a case-sensitive manner;
+ * If the user is interested in case-insensitive searches of international
+ * text, he shouldn't be using hex search in the first place.)
+ *
+ * Switching out of UTF-8 has another advantage:
+ *
+ * When doing case-insensitive searches, GLib treats \xXX symbols as normal
+ * letters and therefore matches both "a" and "A" for the hex pattern
+ * "0x61". When we switch out of UTF-8, we're switching to using [2], which
+ * doesn't have this issue.
+ *
+ * [1] mc_search__cond_struct_new_init_regex
+ * [2] mc_search__cond_struct_new_regex_ci_str
+ */
+ if (str_isutf8 (charset))
+ charset = "ASCII";
+
+ tmp = mc_search__hex_translate_to_regex (mc_search_cond->str, &error, &error_pos);
+ if (tmp != NULL)
+ {
+ g_string_free (mc_search_cond->str, TRUE);
+ mc_search_cond->str = tmp;
+ mc_search__cond_struct_new_init_regex (charset, lc_mc_search, mc_search_cond);
+ }
+ else
+ {
+ const char *desc;
+
+ switch (error)
+ {
+ case MC_SEARCH_HEX_E_NUM_OUT_OF_RANGE:
+ desc =
+ _
+ ("Number out of range (should be in byte range, 0 <= n <= 0xFF, expressed in hex)");
+ break;
+ case MC_SEARCH_HEX_E_INVALID_CHARACTER:
+ desc = _("Invalid character");
+ break;
+ case MC_SEARCH_HEX_E_UNMATCHED_QUOTES:
+ desc = _("Unmatched quotes character");
+ break;
+ default:
+ desc = "";
+ }
+
+ lc_mc_search->error = MC_SEARCH_E_INPUT;
+ lc_mc_search->error_str =
+ g_strdup_printf (_("Hex pattern error at position %d:\n%s."), error_pos + 1, desc);
+ }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_search__run_hex (mc_search_t * lc_mc_search, const void *user_data,
+ gsize start_search, gsize end_search, gsize * found_len)
+{
+ return mc_search__run_regex (lc_mc_search, user_data, start_search, end_search, found_len);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+GString *
+mc_search_hex_prepare_replace_str (mc_search_t * lc_mc_search, GString * replace_str)
+{
+ (void) lc_mc_search;
+
+ return mc_g_string_dup (replace_str);
+}
+
+/* --------------------------------------------------------------------------------------------- */
diff --git a/lib/search/internal.h b/lib/search/internal.h
new file mode 100644
index 0000000..d7b015c
--- /dev/null
+++ b/lib/search/internal.h
@@ -0,0 +1,82 @@
+#ifndef MC__SEARCH_INTERNAL_H
+#define MC__SEARCH_INTERNAL_H
+
+/*** typedefs(not structures) and defined constants **********************************************/
+
+#ifdef SEARCH_TYPE_GLIB
+#define mc_search_regex_t GRegex
+#else
+#define mc_search_regex_t pcre
+#endif
+
+/*** enums ***************************************************************************************/
+
+typedef enum
+{
+ COND__NOT_FOUND,
+ COND__NOT_ALL_FOUND,
+ COND__FOUND_CHAR,
+ COND__FOUND_CHAR_LAST,
+ COND__FOUND_OK,
+ COND__FOUND_ERROR
+} mc_search__found_cond_t;
+
+/*** structures declarations (and typedefs of structures)*****************************************/
+
+typedef struct mc_search_cond_struct
+{
+ GString *str;
+ GString *upper;
+ GString *lower;
+ mc_search_regex_t *regex_handle;
+ gchar *charset;
+} mc_search_cond_t;
+
+/*** global variables defined in .c file *********************************************************/
+
+/*** declarations of public functions ************************************************************/
+
+/* search/lib.c : */
+
+GString *mc_search__recode_str (const char *str, gsize str_len, const char *charset_from,
+ const char *charset_to);
+GString *mc_search__get_one_symbol (const char *charset, const char *str, gsize str_len,
+ gboolean * just_letters);
+GString *mc_search__tolower_case_str (const char *charset, const GString * str);
+GString *mc_search__toupper_case_str (const char *charset, const GString * str);
+
+/* search/regex.c : */
+
+void mc_search__cond_struct_new_init_regex (const char *charset, mc_search_t * lc_mc_search,
+ mc_search_cond_t * mc_search_cond);
+gboolean mc_search__run_regex (mc_search_t * lc_mc_search, const void *user_data,
+ gsize start_search, gsize end_search, gsize * found_len);
+GString *mc_search_regex_prepare_replace_str (mc_search_t * lc_mc_search, GString * replace_str);
+
+/* search/normal.c : */
+
+void mc_search__cond_struct_new_init_normal (const char *charset, mc_search_t * lc_mc_search,
+ mc_search_cond_t * mc_search_cond);
+gboolean mc_search__run_normal (mc_search_t * lc_mc_search, const void *user_data,
+ gsize start_search, gsize end_search, gsize * found_len);
+GString *mc_search_normal_prepare_replace_str (mc_search_t * lc_mc_search, GString * replace_str);
+
+/* search/glob.c : */
+
+void mc_search__cond_struct_new_init_glob (const char *charset, mc_search_t * lc_mc_search,
+ mc_search_cond_t * mc_search_cond);
+gboolean mc_search__run_glob (mc_search_t * lc_mc_search, const void *user_data,
+ gsize start_search, gsize end_search, gsize * found_len);
+GString *mc_search_glob_prepare_replace_str (mc_search_t * lc_mc_search, GString * replace_str);
+
+/* search/hex.c : */
+
+void mc_search__cond_struct_new_init_hex (const char *charset, mc_search_t * lc_mc_search,
+ mc_search_cond_t * mc_search_cond);
+gboolean mc_search__run_hex (mc_search_t * lc_mc_search, const void *user_data,
+ gsize start_search, gsize end_search, gsize * found_len);
+GString *mc_search_hex_prepare_replace_str (mc_search_t * lc_mc_search, GString * replace_str);
+
+/*** inline functions ****************************************************************************/
+
+#endif /* MC__SEARCH_INTERNAL_H */
diff --git a/lib/search/lib.c b/lib/search/lib.c
new file mode 100644
index 0000000..6ec5630
--- /dev/null
+++ b/lib/search/lib.c
@@ -0,0 +1,229 @@
+/*
+ Search text engine.
+ Common share code for module.
+
+ Copyright (C) 2009-2022
+ Free Software Foundation, Inc.
+
+ Written by:
+ Slava Zanko <slavazanko@gmail.com>, 2009, 2011
+ Andrew Borodin <aborodin@vmail.ru>, 2013
+
+ 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 <stdlib.h>
+#include <sys/types.h>
+
+#include "lib/global.h"
+#include "lib/strutil.h"
+#include "lib/search.h"
+#ifdef HAVE_CHARSET
+#include "lib/charsets.h"
+#endif
+
+#include "internal.h"
+
+/*** global variables ****************************************************************************/
+
+const char *STR_E_NOTFOUND = N_("Search string not found");
+const char *STR_E_UNKNOWN_TYPE = N_("Not implemented yet");
+const char *STR_E_RPL_NOT_EQ_TO_FOUND =
+N_("Num of replace tokens not equal to num of found tokens");
+const char *STR_E_RPL_INVALID_TOKEN = N_("Invalid token number %d");
+
+/*** file scope macro definitions ****************************************************************/
+
+/*** file scope type declarations ****************************************************************/
+
+typedef gboolean (*case_conv_fn) (const char *ch, char **out, size_t * remain);
+
+/*** file scope variables ************************************************************************/
+
+/* --------------------------------------------------------------------------------------------- */
+/*** file scope functions ************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+static GString *
+mc_search__change_case_str (const char *charset, const GString * str, case_conv_fn case_conv)
+{
+ GString *ret;
+ const char *src_ptr;
+ gchar *dst_str;
+ gchar *dst_ptr;
+ gsize dst_len;
+#ifdef HAVE_CHARSET
+ GString *converted_str;
+
+ if (charset == NULL)
+ charset = cp_source;
+
+ converted_str = mc_search__recode_str (str->str, str->len, charset, cp_display);
+
+ dst_len = converted_str->len + 1; /* +1 is required for str_toupper/str_tolower */
+ dst_str = g_malloc (dst_len);
+
+ for (src_ptr = converted_str->str, dst_ptr = dst_str;
+ case_conv (src_ptr, &dst_ptr, &dst_len); src_ptr += str_length_char (src_ptr))
+ ;
+ *dst_ptr = '\0';
+
+ dst_len = converted_str->len;
+ g_string_free (converted_str, TRUE);
+
+ ret = mc_search__recode_str (dst_str, dst_len, cp_display, charset);
+ g_free (dst_str);
+#else
+ (void) charset;
+
+ dst_len = str->len + 1; /* +1 is required for str_toupper/str_tolower */
+ dst_str = g_malloc (dst_len);
+
+ for (src_ptr = str->str, dst_ptr = dst_str;
+ case_conv (src_ptr, &dst_ptr, &dst_len); src_ptr += str_length_char (src_ptr))
+ ;
+ *dst_ptr = '\0';
+
+ ret = g_string_new_len (dst_str, dst_len);
+ g_free (dst_str);
+#endif
+ return ret;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+GString *
+mc_search__recode_str (const char *str, gsize str_len, const char *charset_from,
+ const char *charset_to)
+{
+ GString *ret = NULL;
+
+ if (charset_from != NULL && charset_to != NULL
+ && g_ascii_strcasecmp (charset_to, charset_from) != 0)
+ {
+ GIConv conv;
+
+ conv = g_iconv_open (charset_to, charset_from);
+ if (conv != INVALID_CONV)
+ {
+ gchar *val;
+ gsize bytes_read = 0;
+ gsize bytes_written = 0;
+
+ val = g_convert_with_iconv (str, str_len, conv, &bytes_read, &bytes_written, NULL);
+
+ g_iconv_close (conv);
+
+ if (val != NULL)
+ {
+ ret = g_string_new_len (val, bytes_written);
+ g_free (val);
+ }
+ }
+ }
+
+ if (ret == NULL)
+ ret = g_string_new_len (str, str_len);
+
+ return ret;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+GString *
+mc_search__get_one_symbol (const char *charset, const char *str, gsize str_len,
+ gboolean * just_letters)
+{
+ GString *converted_str;
+ const gchar *next_char;
+
+#ifdef HAVE_CHARSET
+ GString *converted_str2;
+
+ if (charset == NULL)
+ charset = cp_source;
+
+ converted_str = mc_search__recode_str (str, str_len, charset, cp_display);
+#else
+ (void) charset;
+
+ converted_str = g_string_new_len (str, str_len);
+#endif
+
+ next_char = str_cget_next_char (converted_str->str);
+ g_string_set_size (converted_str, (gsize) (next_char - converted_str->str));
+
+#ifdef HAVE_CHARSET
+ converted_str2 =
+ mc_search__recode_str (converted_str->str, converted_str->len, cp_display, charset);
+#endif
+ if (just_letters != NULL)
+ *just_letters = str_isalnum (converted_str->str) && !str_isdigit (converted_str->str);
+#ifdef HAVE_CHARSET
+ g_string_free (converted_str, TRUE);
+ return converted_str2;
+#else
+ return converted_str;
+#endif
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+GString *
+mc_search__tolower_case_str (const char *charset, const GString * str)
+{
+ return mc_search__change_case_str (charset, str, str_tolower);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+GString *
+mc_search__toupper_case_str (const char *charset, const GString * str)
+{
+ return mc_search__change_case_str (charset, str, str_toupper);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gchar **
+mc_search_get_types_strings_array (size_t * num)
+{
+ gchar **ret;
+ int lc_index;
+ size_t n;
+
+ const mc_search_type_str_t *type_str;
+ const mc_search_type_str_t *types_str = mc_search_types_list_get (&n);
+
+ ret = g_try_new0 (char *, n + 1);
+ if (ret == NULL)
+ return NULL;
+
+ for (lc_index = 0, type_str = types_str; type_str->str != NULL; type_str++, lc_index++)
+ ret[lc_index] = g_strdup (type_str->str);
+
+ /* don't count last NULL item */
+ if (num != NULL)
+ *num = (size_t) lc_index;
+
+ return ret;
+}
+
+/* --------------------------------------------------------------------------------------------- */
diff --git a/lib/search/normal.c b/lib/search/normal.c
new file mode 100644
index 0000000..483e4a4
--- /dev/null
+++ b/lib/search/normal.c
@@ -0,0 +1,106 @@
+/*
+ Search text engine.
+ Plain search
+
+ Copyright (C) 2009-2022
+ Free Software Foundation, Inc.
+
+ Written by:
+ Slava Zanko <slavazanko@gmail.com>, 2009.
+
+ 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 "lib/global.h"
+#include "lib/strutil.h"
+#include "lib/search.h"
+
+#include "internal.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+/*** file scope type declarations ****************************************************************/
+
+/*** file scope variables ************************************************************************/
+
+/* --------------------------------------------------------------------------------------------- */
+/*** file scope functions ************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+mc_search__normal_translate_to_regex (GString * str)
+{
+ gsize loop;
+
+ for (loop = 0; loop < str->len; loop++)
+ switch (str->str[loop])
+ {
+ case '*':
+ case '?':
+ case ',':
+ case '{':
+ case '}':
+ case '[':
+ case ']':
+ case '\\':
+ case '+':
+ case '.':
+ case '$':
+ case '(':
+ case ')':
+ case '^':
+ case '-':
+ case '|':
+ g_string_insert_c (str, loop, '\\');
+ loop++;
+ default:
+ break;
+ }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+void
+mc_search__cond_struct_new_init_normal (const char *charset, mc_search_t * lc_mc_search,
+ mc_search_cond_t * mc_search_cond)
+{
+ mc_search__normal_translate_to_regex (mc_search_cond->str);
+ mc_search__cond_struct_new_init_regex (charset, lc_mc_search, mc_search_cond);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_search__run_normal (mc_search_t * lc_mc_search, const void *user_data,
+ gsize start_search, gsize end_search, gsize * found_len)
+{
+ return mc_search__run_regex (lc_mc_search, user_data, start_search, end_search, found_len);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+GString *
+mc_search_normal_prepare_replace_str (mc_search_t * lc_mc_search, GString * replace_str)
+{
+ (void) lc_mc_search;
+
+ return mc_g_string_dup (replace_str);
+}
diff --git a/lib/search/regex.c b/lib/search/regex.c
new file mode 100644
index 0000000..07b6833
--- /dev/null
+++ b/lib/search/regex.c
@@ -0,0 +1,1086 @@
+/*
+ Search text engine.
+ Regex search
+
+ Copyright (C) 2009-2022
+ Free Software Foundation, Inc.
+
+ Written by:
+ Slava Zanko <slavazanko@gmail.com>, 2009, 2010, 2011, 2013
+ Vitaliy Filippov <vitalif@yourcmc.ru>, 2011
+ Andrew Borodin <aborodin@vmail.ru>, 2013-2015
+
+ 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 <stdlib.h>
+
+#include "lib/global.h"
+#include "lib/strutil.h"
+#include "lib/search.h"
+#include "lib/strescape.h"
+#include "lib/util.h" /* MC_PTR_FREE */
+
+#include "internal.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+#define REPLACE_PREPARE_T_NOTHING_SPECIAL -1
+#define REPLACE_PREPARE_T_REPLACE_FLAG -2
+#define REPLACE_PREPARE_T_ESCAPE_SEQ -3
+
+/*** file scope type declarations ****************************************************************/
+
+typedef enum
+{
+ REPLACE_T_NO_TRANSFORM = 0,
+ REPLACE_T_UPP_TRANSFORM_CHAR = 1,
+ REPLACE_T_LOW_TRANSFORM_CHAR = 2,
+ REPLACE_T_UPP_TRANSFORM = 4,
+ REPLACE_T_LOW_TRANSFORM = 8
+} replace_transform_type_t;
+
+
+/*** file scope variables ************************************************************************/
+
+/*** file scope functions ************************************************************************/
+
+static gboolean
+mc_search__regex_str_append_if_special (GString * copy_to, const GString * regex_str,
+ gsize * offset)
+{
+ const char *special_chars[] = {
+ "\\s", "\\S",
+ "\\d", "\\D",
+ "\\b", "\\B",
+ "\\w", "\\W",
+ "\\t", "\\n",
+ "\\r", "\\f",
+ "\\a", "\\e",
+ "\\x", "\\X",
+ "\\c", "\\C",
+ "\\l", "\\L",
+ "\\u", "\\U",
+ "\\E", "\\Q",
+ NULL
+ };
+
+ char *tmp_regex_str;
+ const char **spec_chr;
+
+ tmp_regex_str = &(regex_str->str[*offset]);
+
+ for (spec_chr = special_chars; *spec_chr != NULL; spec_chr++)
+ {
+ gsize spec_chr_len;
+
+ spec_chr_len = strlen (*spec_chr);
+
+ if (strncmp (tmp_regex_str, *spec_chr, spec_chr_len) == 0
+ && !strutils_is_char_escaped (regex_str->str, tmp_regex_str))
+ {
+ if (strncmp ("\\x", *spec_chr, spec_chr_len) == 0)
+ {
+ if (tmp_regex_str[spec_chr_len] != '{')
+ spec_chr_len += 2;
+ else
+ {
+ while ((spec_chr_len < regex_str->len - *offset)
+ && tmp_regex_str[spec_chr_len] != '}')
+ spec_chr_len++;
+ if (tmp_regex_str[spec_chr_len] == '}')
+ spec_chr_len++;
+ }
+ }
+ g_string_append_len (copy_to, tmp_regex_str, spec_chr_len);
+ *offset += spec_chr_len;
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+mc_search__cond_struct_new_regex_hex_add (const char *charset, GString * str_to,
+ const GString * one_char)
+{
+ GString *upp, *low;
+ gsize loop;
+
+ upp = mc_search__toupper_case_str (charset, one_char);
+ low = mc_search__tolower_case_str (charset, one_char);
+
+ for (loop = 0; loop < upp->len; loop++)
+ {
+ gchar tmp_str[10 + 1]; /* longest content is "[\\x%02X\\x%02X]" */
+ gint tmp_len;
+
+ if (loop >= low->len || upp->str[loop] == low->str[loop])
+ tmp_len =
+ g_snprintf (tmp_str, sizeof (tmp_str), "\\x%02X", (unsigned char) upp->str[loop]);
+ else
+ tmp_len =
+ g_snprintf (tmp_str, sizeof (tmp_str), "[\\x%02X\\x%02X]",
+ (unsigned char) upp->str[loop], (unsigned char) low->str[loop]);
+
+ g_string_append_len (str_to, tmp_str, tmp_len);
+ }
+
+ g_string_free (upp, TRUE);
+ g_string_free (low, TRUE);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+mc_search__cond_struct_new_regex_accum_append (const char *charset, GString * str_to,
+ GString * str_from)
+{
+ GString *recoded_part;
+ gsize loop = 0;
+
+ recoded_part = g_string_sized_new (32);
+
+ while (loop < str_from->len)
+ {
+ GString *one_char;
+ gboolean just_letters;
+
+ one_char =
+ mc_search__get_one_symbol (charset, str_from->str + loop,
+ MIN (str_from->len - loop, 6), &just_letters);
+
+ if (one_char->len == 0)
+ loop++;
+ else
+ {
+ loop += one_char->len;
+
+ if (just_letters)
+ mc_search__cond_struct_new_regex_hex_add (charset, recoded_part, one_char);
+ else
+ g_string_append_len (recoded_part, one_char->str, one_char->len);
+ }
+
+ g_string_free (one_char, TRUE);
+ }
+
+ g_string_append_len (str_to, recoded_part->str, recoded_part->len);
+ g_string_free (recoded_part, TRUE);
+ g_string_set_size (str_from, 0);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+/**
+ * Creates a case-insensitive version of a regex pattern.
+ *
+ * For example (assuming ASCII charset): given "\\bHello!\\xAB", returns
+ * "\\b[Hh][Ee][Ll][Ll][Oo]!\\xAB" (this example is for easier reading; in
+ * reality hex codes are used instead of letters).
+ *
+ * This function knows not to ruin special regex symbols.
+ *
+ * This function is used when working with non-UTF-8 charsets: GLib's
+ * regex engine doesn't understand such charsets and therefore can't do
+ * this job itself.
+ */
+static GString *
+mc_search__cond_struct_new_regex_ci_str (const char *charset, const GString * astr)
+{
+ GString *accumulator, *spec_char, *ret_str;
+ gsize loop;
+
+ ret_str = g_string_sized_new (64);
+ accumulator = g_string_sized_new (64);
+ spec_char = g_string_sized_new (64);
+ loop = 0;
+
+ while (loop < astr->len)
+ {
+ if (mc_search__regex_str_append_if_special (spec_char, astr, &loop))
+ {
+ mc_search__cond_struct_new_regex_accum_append (charset, ret_str, accumulator);
+ g_string_append_len (ret_str, spec_char->str, spec_char->len);
+ g_string_set_size (spec_char, 0);
+ continue;
+ }
+
+ if (astr->str[loop] == '[' && !strutils_is_char_escaped (astr->str, &(astr->str[loop])))
+ {
+ mc_search__cond_struct_new_regex_accum_append (charset, ret_str, accumulator);
+
+ while (loop < astr->len && !(astr->str[loop] == ']'
+ && !strutils_is_char_escaped (astr->str,
+ &(astr->str[loop]))))
+ {
+ g_string_append_c (ret_str, astr->str[loop]);
+ loop++;
+ }
+
+ g_string_append_c (ret_str, astr->str[loop]);
+ loop++;
+ continue;
+ }
+ /*
+ TODO: handle [ and ]
+ */
+ g_string_append_c (accumulator, astr->str[loop]);
+ loop++;
+ }
+ mc_search__cond_struct_new_regex_accum_append (charset, ret_str, accumulator);
+
+ g_string_free (accumulator, TRUE);
+ g_string_free (spec_char, TRUE);
+
+ return ret_str;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+#ifdef SEARCH_TYPE_GLIB
+/* A thin wrapper above g_regex_match_full that makes sure the string passed
+ * to it is valid UTF-8 (unless G_REGEX_RAW compile flag was set), as it is a
+ * requirement by glib and it might crash otherwise. See: mc ticket 3449.
+ * Be careful: there might be embedded NULs in the strings. */
+static gboolean
+mc_search__g_regex_match_full_safe (const GRegex * regex,
+ const gchar * string,
+ gssize string_len,
+ gint start_position,
+ GRegexMatchFlags match_options,
+ GMatchInfo ** match_info, GError ** error)
+{
+ char *string_safe, *p, *end;
+ gboolean ret;
+
+ if (string_len < 0)
+ string_len = strlen (string);
+
+ if ((g_regex_get_compile_flags (regex) & G_REGEX_RAW)
+ || g_utf8_validate (string, string_len, NULL))
+ {
+ return g_regex_match_full (regex, string, string_len, start_position, match_options,
+ match_info, error);
+ }
+
+ /* Correctly handle embedded NULs while copying */
+ p = string_safe = g_malloc (string_len + 1);
+ memcpy (string_safe, string, string_len);
+ string_safe[string_len] = '\0';
+ end = p + string_len;
+
+ while (p < end)
+ {
+ gunichar c = g_utf8_get_char_validated (p, -1);
+ if (c != (gunichar) (-1) && c != (gunichar) (-2))
+ {
+ p = g_utf8_next_char (p);
+ }
+ else
+ {
+ /* U+FFFD would be the proper choice, but then we'd have to
+ maintain mapping between old and new offsets.
+ So rather do a byte by byte replacement. */
+ *p++ = '\0';
+ }
+ }
+
+ ret =
+ g_regex_match_full (regex, string_safe, string_len, start_position, match_options,
+ match_info, error);
+ g_free (string_safe);
+ return ret;
+}
+#endif /* SEARCH_TYPE_GLIB */
+
+/* --------------------------------------------------------------------------------------------- */
+
+static mc_search__found_cond_t
+mc_search__regex_found_cond_one (mc_search_t * lc_mc_search, mc_search_regex_t * regex,
+ GString * search_str)
+{
+#ifdef SEARCH_TYPE_GLIB
+ GError *mcerror = NULL;
+
+ if (!mc_search__g_regex_match_full_safe
+ (regex, search_str->str, search_str->len, 0, G_REGEX_MATCH_NEWLINE_ANY,
+ &lc_mc_search->regex_match_info, &mcerror))
+ {
+ g_match_info_free (lc_mc_search->regex_match_info);
+ lc_mc_search->regex_match_info = NULL;
+ if (mcerror != NULL)
+ {
+ lc_mc_search->error = MC_SEARCH_E_REGEX;
+ g_free (lc_mc_search->error_str);
+ lc_mc_search->error_str =
+ str_conv_gerror_message (mcerror, _("Regular expression error"));
+ g_error_free (mcerror);
+ return COND__FOUND_ERROR;
+ }
+ return COND__NOT_FOUND;
+ }
+ lc_mc_search->num_results = g_match_info_get_match_count (lc_mc_search->regex_match_info);
+#else /* SEARCH_TYPE_GLIB */
+ lc_mc_search->num_results = pcre_exec (regex, lc_mc_search->regex_match_info,
+ search_str->str, search_str->len, 0, 0,
+ lc_mc_search->iovector, MC_SEARCH__NUM_REPLACE_ARGS);
+ if (lc_mc_search->num_results < 0)
+ {
+ return COND__NOT_FOUND;
+ }
+#endif /* SEARCH_TYPE_GLIB */
+ return COND__FOUND_OK;
+
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static mc_search__found_cond_t
+mc_search__regex_found_cond (mc_search_t * lc_mc_search, GString * search_str)
+{
+ gsize loop1;
+
+ for (loop1 = 0; loop1 < lc_mc_search->prepared.conditions->len; loop1++)
+ {
+ mc_search_cond_t *mc_search_cond;
+ mc_search__found_cond_t ret;
+
+ mc_search_cond =
+ (mc_search_cond_t *) g_ptr_array_index (lc_mc_search->prepared.conditions, loop1);
+
+ if (!mc_search_cond->regex_handle)
+ continue;
+
+ ret =
+ mc_search__regex_found_cond_one (lc_mc_search, mc_search_cond->regex_handle,
+ search_str);
+ if (ret != COND__NOT_FOUND)
+ return ret;
+ }
+ return COND__NOT_ALL_FOUND;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+mc_search_regex__get_max_num_of_replace_tokens (const gchar * str, gsize len)
+{
+ int max_token = 0;
+ gsize loop;
+ for (loop = 0; loop < len - 1; loop++)
+ {
+ if (str[loop] == '\\' && g_ascii_isdigit (str[loop + 1]))
+ {
+ if (strutils_is_char_escaped (str, &str[loop]))
+ continue;
+ if (max_token < str[loop + 1] - '0')
+ max_token = str[loop + 1] - '0';
+ continue;
+ }
+ if (str[loop] == '$' && str[loop + 1] == '{')
+ {
+ gsize tmp_len;
+
+ if (strutils_is_char_escaped (str, &str[loop]))
+ continue;
+
+ for (tmp_len = 0;
+ loop + tmp_len + 2 < len && (str[loop + 2 + tmp_len] & (char) 0xf0) == 0x30;
+ tmp_len++);
+
+ if (str[loop + 2 + tmp_len] == '}')
+ {
+ int tmp_token;
+ char *tmp_str;
+
+ tmp_str = g_strndup (&str[loop + 2], tmp_len);
+ tmp_token = atoi (tmp_str);
+ if (max_token < tmp_token)
+ max_token = tmp_token;
+ g_free (tmp_str);
+ }
+ }
+ }
+ return max_token;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static char *
+mc_search_regex__get_token_by_num (const mc_search_t * lc_mc_search, gsize lc_index)
+{
+ int fnd_start = 0, fnd_end = 0;
+
+#ifdef SEARCH_TYPE_GLIB
+ g_match_info_fetch_pos (lc_mc_search->regex_match_info, lc_index, &fnd_start, &fnd_end);
+#else /* SEARCH_TYPE_GLIB */
+ fnd_start = lc_mc_search->iovector[lc_index * 2 + 0];
+ fnd_end = lc_mc_search->iovector[lc_index * 2 + 1];
+#endif /* SEARCH_TYPE_GLIB */
+
+ if (fnd_end == fnd_start)
+ return g_strdup ("");
+
+ return g_strndup (lc_mc_search->regex_buffer->str + fnd_start, fnd_end - fnd_start);
+
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+mc_search_regex__replace_handle_esc_seq (const GString * replace_str, const gsize current_pos,
+ gsize * skip_len, int *ret)
+{
+ char *curr_str = &(replace_str->str[current_pos]);
+ char c = curr_str[1];
+
+ if (replace_str->len > current_pos + 2)
+ {
+ if (c == '{')
+ {
+ for (*skip_len = 2; /* \{ */
+ current_pos + *skip_len < replace_str->len && curr_str[*skip_len] >= '0'
+ && curr_str[*skip_len] <= '7'; (*skip_len)++)
+ ;
+
+ if (current_pos + *skip_len < replace_str->len && curr_str[*skip_len] == '}')
+ {
+ (*skip_len)++;
+ *ret = REPLACE_PREPARE_T_ESCAPE_SEQ;
+ return FALSE;
+ }
+ else
+ {
+ *ret = REPLACE_PREPARE_T_NOTHING_SPECIAL;
+ return TRUE;
+ }
+ }
+
+ if (c == 'x')
+ {
+ *skip_len = 2; /* \x */
+ c = curr_str[2];
+ if (c == '{')
+ {
+ for (*skip_len = 3; /* \x{ */
+ current_pos + *skip_len < replace_str->len
+ && g_ascii_isxdigit ((guchar) curr_str[*skip_len]); (*skip_len)++)
+ ;
+
+ if (current_pos + *skip_len < replace_str->len && curr_str[*skip_len] == '}')
+ {
+ (*skip_len)++;
+ *ret = REPLACE_PREPARE_T_ESCAPE_SEQ;
+ return FALSE;
+ }
+ else
+ {
+ *ret = REPLACE_PREPARE_T_NOTHING_SPECIAL;
+ return TRUE;
+ }
+ }
+ else if (!g_ascii_isxdigit ((guchar) c))
+ {
+ *skip_len = 2; /* \x without number behind */
+ *ret = REPLACE_PREPARE_T_NOTHING_SPECIAL;
+ return FALSE;
+ }
+ else
+ {
+ c = curr_str[3];
+ if (!g_ascii_isxdigit ((guchar) c))
+ *skip_len = 3; /* \xH */
+ else
+ *skip_len = 4; /* \xHH */
+ *ret = REPLACE_PREPARE_T_ESCAPE_SEQ;
+ return FALSE;
+ }
+ }
+ }
+
+ if (strchr ("ntvbrfa", c) != NULL)
+ {
+ *skip_len = 2;
+ *ret = REPLACE_PREPARE_T_ESCAPE_SEQ;
+ return FALSE;
+ }
+ return TRUE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+mc_search_regex__process_replace_str (const GString * replace_str, const gsize current_pos,
+ gsize * skip_len, replace_transform_type_t * replace_flags)
+{
+ int ret = -1;
+ const char *curr_str = &(replace_str->str[current_pos]);
+
+ if (current_pos > replace_str->len)
+ return REPLACE_PREPARE_T_NOTHING_SPECIAL;
+
+ *skip_len = 0;
+
+ if (replace_str->len > current_pos + 2 && curr_str[0] == '$' && curr_str[1] == '{'
+ && (curr_str[2] & (char) 0xf0) == 0x30)
+ {
+ char *tmp_str;
+
+ if (strutils_is_char_escaped (replace_str->str, curr_str))
+ {
+ *skip_len = 1;
+ return REPLACE_PREPARE_T_NOTHING_SPECIAL;
+ }
+
+ for (*skip_len = 0;
+ current_pos + *skip_len + 2 < replace_str->len
+ && (curr_str[2 + *skip_len] & (char) 0xf0) == 0x30; (*skip_len)++)
+ ;
+
+ if (curr_str[2 + *skip_len] != '}')
+ return REPLACE_PREPARE_T_NOTHING_SPECIAL;
+
+ tmp_str = g_strndup (curr_str + 2, *skip_len);
+ if (tmp_str == NULL)
+ return REPLACE_PREPARE_T_NOTHING_SPECIAL;
+
+ ret = atoi (tmp_str);
+ g_free (tmp_str);
+
+ *skip_len += 3; /* ${} */
+ return ret; /* capture buffer index >= 0 */
+ }
+
+ if (curr_str[0] == '\\' && replace_str->len > current_pos + 1)
+ {
+ if (strutils_is_char_escaped (replace_str->str, curr_str))
+ {
+ *skip_len = 1;
+ return REPLACE_PREPARE_T_NOTHING_SPECIAL;
+ }
+
+ if (g_ascii_isdigit (curr_str[1]))
+ {
+ ret = g_ascii_digit_value (curr_str[1]); /* capture buffer index >= 0 */
+ *skip_len = 2; /* \\ and one digit */
+ return ret;
+ }
+
+ if (!mc_search_regex__replace_handle_esc_seq (replace_str, current_pos, skip_len, &ret))
+ return ret;
+
+ ret = REPLACE_PREPARE_T_REPLACE_FLAG;
+ *skip_len += 2;
+
+ switch (curr_str[1])
+ {
+ case 'U':
+ *replace_flags |= REPLACE_T_UPP_TRANSFORM;
+ *replace_flags &= ~REPLACE_T_LOW_TRANSFORM;
+ break;
+ case 'u':
+ *replace_flags |= REPLACE_T_UPP_TRANSFORM_CHAR;
+ break;
+ case 'L':
+ *replace_flags |= REPLACE_T_LOW_TRANSFORM;
+ *replace_flags &= ~REPLACE_T_UPP_TRANSFORM;
+ break;
+ case 'l':
+ *replace_flags |= REPLACE_T_LOW_TRANSFORM_CHAR;
+ break;
+ case 'E':
+ *replace_flags = REPLACE_T_NO_TRANSFORM;
+ break;
+ default:
+ ret = REPLACE_PREPARE_T_NOTHING_SPECIAL;
+ break;
+ }
+ }
+ return ret;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+mc_search_regex__process_append_str (GString * dest_str, const char *from, gsize len,
+ replace_transform_type_t * replace_flags)
+{
+ gsize loop;
+ gsize char_len;
+
+ if (len == (gsize) (-1))
+ len = strlen (from);
+
+ if (*replace_flags == REPLACE_T_NO_TRANSFORM)
+ {
+ g_string_append_len (dest_str, from, len);
+ return;
+ }
+
+ for (loop = 0; loop < len; loop += char_len)
+ {
+ GString *tmp_string = NULL;
+ GString *s;
+
+ s = mc_search__get_one_symbol (NULL, from + loop, len - loop, NULL);
+ char_len = s->len;
+
+ if ((*replace_flags & REPLACE_T_UPP_TRANSFORM_CHAR) != 0)
+ {
+ *replace_flags &= ~REPLACE_T_UPP_TRANSFORM_CHAR;
+ tmp_string = mc_search__toupper_case_str (NULL, s);
+ g_string_append_len (dest_str, tmp_string->str, tmp_string->len);
+ }
+ else if ((*replace_flags & REPLACE_T_LOW_TRANSFORM_CHAR) != 0)
+ {
+ *replace_flags &= ~REPLACE_T_LOW_TRANSFORM_CHAR;
+ tmp_string = mc_search__tolower_case_str (NULL, s);
+ g_string_append_len (dest_str, tmp_string->str, tmp_string->len);
+ }
+ else if ((*replace_flags & REPLACE_T_UPP_TRANSFORM) != 0)
+ {
+ tmp_string = mc_search__toupper_case_str (NULL, s);
+ g_string_append_len (dest_str, tmp_string->str, tmp_string->len);
+ }
+ else if ((*replace_flags & REPLACE_T_LOW_TRANSFORM) != 0)
+ {
+ tmp_string = mc_search__tolower_case_str (NULL, s);
+ g_string_append_len (dest_str, tmp_string->str, tmp_string->len);
+ }
+
+ g_string_free (s, TRUE);
+ if (tmp_string != NULL)
+ g_string_free (tmp_string, TRUE);
+ }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+mc_search_regex__process_escape_sequence (GString * dest_str, const char *from, gsize len,
+ replace_transform_type_t * replace_flags,
+ gboolean is_utf8)
+{
+ gsize i = 0;
+ unsigned int c = 0;
+ char b;
+
+ if (len == (gsize) (-1))
+ len = strlen (from);
+ if (len == 0)
+ return;
+
+ if (from[i] == '{')
+ i++;
+ if (i >= len)
+ return;
+
+ if (from[i] == 'x')
+ {
+ i++;
+ if (i < len && from[i] == '{')
+ i++;
+ for (; i < len; i++)
+ {
+ if (from[i] >= '0' && from[i] <= '9')
+ c = c * 16 + from[i] - '0';
+ else if (from[i] >= 'a' && from[i] <= 'f')
+ c = c * 16 + 10 + from[i] - 'a';
+ else if (from[i] >= 'A' && from[i] <= 'F')
+ c = c * 16 + 10 + from[i] - 'A';
+ else
+ break;
+ }
+ }
+ else if (from[i] >= '0' && from[i] <= '7')
+ for (; i < len && from[i] >= '0' && from[i] <= '7'; i++)
+ c = c * 8 + from[i] - '0';
+ else
+ {
+ switch (from[i])
+ {
+ case 'n':
+ c = '\n';
+ break;
+ case 't':
+ c = '\t';
+ break;
+ case 'v':
+ c = '\v';
+ break;
+ case 'b':
+ c = '\b';
+ break;
+ case 'r':
+ c = '\r';
+ break;
+ case 'f':
+ c = '\f';
+ break;
+ case 'a':
+ c = '\a';
+ break;
+ default:
+ mc_search_regex__process_append_str (dest_str, from, len, replace_flags);
+ return;
+ }
+ }
+
+ if (c < 0x80 || !is_utf8)
+ g_string_append_c (dest_str, (char) c);
+ else if (c < 0x800)
+ {
+ b = 0xC0 | (c >> 6);
+ g_string_append_c (dest_str, b);
+ b = 0x80 | (c & 0x3F);
+ g_string_append_c (dest_str, b);
+ }
+ else if (c < 0x10000)
+ {
+ b = 0xE0 | (c >> 12);
+ g_string_append_c (dest_str, b);
+ b = 0x80 | ((c >> 6) & 0x3F);
+ g_string_append_c (dest_str, b);
+ b = 0x80 | (c & 0x3F);
+ g_string_append_c (dest_str, b);
+ }
+ else if (c < 0x10FFFF)
+ {
+ b = 0xF0 | (c >> 16);
+ g_string_append_c (dest_str, b);
+ b = 0x80 | ((c >> 12) & 0x3F);
+ g_string_append_c (dest_str, b);
+ b = 0x80 | ((c >> 6) & 0x3F);
+ g_string_append_c (dest_str, b);
+ b = 0x80 | (c & 0x3F);
+ g_string_append_c (dest_str, b);
+ }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+void
+mc_search__cond_struct_new_init_regex (const char *charset, mc_search_t * lc_mc_search,
+ mc_search_cond_t * mc_search_cond)
+{
+ if (lc_mc_search->whole_words && !lc_mc_search->is_entire_line)
+ {
+ /* NOTE: \b as word boundary doesn't allow search
+ * whole words with non-ASCII symbols.
+ * Update: Is it still true nowadays? Probably not. #2396, #3524 */
+ g_string_prepend (mc_search_cond->str, "(?<![\\p{L}\\p{N}_])");
+ g_string_append (mc_search_cond->str, "(?![\\p{L}\\p{N}_])");
+ }
+
+ {
+#ifdef SEARCH_TYPE_GLIB
+ GError *mcerror = NULL;
+ GRegexCompileFlags g_regex_options = G_REGEX_OPTIMIZE | G_REGEX_DOTALL;
+
+ if (str_isutf8 (charset) && mc_global.utf8_display)
+ {
+ if (!lc_mc_search->is_case_sensitive)
+ g_regex_options |= G_REGEX_CASELESS;
+ }
+ else
+ {
+ g_regex_options |= G_REGEX_RAW;
+
+ if (!lc_mc_search->is_case_sensitive)
+ {
+ GString *tmp;
+
+ tmp = mc_search_cond->str;
+ mc_search_cond->str = mc_search__cond_struct_new_regex_ci_str (charset, tmp);
+ g_string_free (tmp, TRUE);
+ }
+ }
+
+ mc_search_cond->regex_handle =
+ g_regex_new (mc_search_cond->str->str, g_regex_options, 0, &mcerror);
+
+ if (mcerror != NULL)
+ {
+ lc_mc_search->error = MC_SEARCH_E_REGEX_COMPILE;
+ g_free (lc_mc_search->error_str);
+ lc_mc_search->error_str =
+ str_conv_gerror_message (mcerror, _("Regular expression error"));
+ g_error_free (mcerror);
+ return;
+ }
+#else /* SEARCH_TYPE_GLIB */
+ const char *error;
+ int erroffset;
+ int pcre_options = PCRE_EXTRA | PCRE_MULTILINE;
+
+ if (str_isutf8 (charset) && mc_global.utf8_display)
+ {
+ pcre_options |= PCRE_UTF8;
+ if (!lc_mc_search->is_case_sensitive)
+ pcre_options |= PCRE_CASELESS;
+ }
+ else if (!lc_mc_search->is_case_sensitive)
+ {
+ GString *tmp;
+
+ tmp = mc_search_cond->str;
+ mc_search_cond->str = mc_search__cond_struct_new_regex_ci_str (charset, tmp);
+ g_string_free (tmp, TRUE);
+ }
+
+ mc_search_cond->regex_handle =
+ pcre_compile (mc_search_cond->str->str, pcre_options, &error, &erroffset, NULL);
+ if (mc_search_cond->regex_handle == NULL)
+ {
+ mc_search_set_error (lc_mc_search, MC_SEARCH_E_REGEX_COMPILE, "%s", error);
+ return;
+ }
+ lc_mc_search->regex_match_info = pcre_study (mc_search_cond->regex_handle, 0, &error);
+ if (lc_mc_search->regex_match_info == NULL && error != NULL)
+ {
+ mc_search_set_error (lc_mc_search, MC_SEARCH_E_REGEX_COMPILE, "%s", error);
+ MC_PTR_FREE (mc_search_cond->regex_handle);
+ return;
+ }
+#endif /* SEARCH_TYPE_GLIB */
+ }
+
+ lc_mc_search->is_utf8 = str_isutf8 (charset);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_search__run_regex (mc_search_t * lc_mc_search, const void *user_data,
+ gsize start_search, gsize end_search, gsize * found_len)
+{
+ mc_search_cbret_t ret = MC_SEARCH_CB_NOTFOUND;
+ gsize current_pos, virtual_pos;
+ gint start_pos;
+ gint end_pos;
+
+ if (lc_mc_search->regex_buffer != NULL)
+ g_string_set_size (lc_mc_search->regex_buffer, 0);
+ else
+ lc_mc_search->regex_buffer = g_string_sized_new (64);
+
+ virtual_pos = current_pos = start_search;
+ while (virtual_pos <= end_search)
+ {
+ g_string_set_size (lc_mc_search->regex_buffer, 0);
+ lc_mc_search->start_buffer = current_pos;
+
+ if (lc_mc_search->search_fn != NULL)
+ {
+ while (TRUE)
+ {
+ int current_chr = '\n'; /* stop search symbol */
+
+ ret = lc_mc_search->search_fn (user_data, current_pos, &current_chr);
+
+ if (ret == MC_SEARCH_CB_ABORT)
+ break;
+
+ if (ret == MC_SEARCH_CB_INVALID)
+ continue;
+
+ current_pos++;
+
+ if (ret == MC_SEARCH_CB_SKIP)
+ continue;
+
+ virtual_pos++;
+
+ g_string_append_c (lc_mc_search->regex_buffer, (char) current_chr);
+
+ if ((char) current_chr == '\n' || virtual_pos > end_search)
+ break;
+ }
+ }
+ else
+ {
+ /* optimization for standard case (for search from file manager)
+ * where there is no MC_SEARCH_CB_INVALID or MC_SEARCH_CB_SKIP
+ * return codes, so we can copy line at regex buffer all at once
+ */
+ while (TRUE)
+ {
+ const char current_chr = ((const char *) user_data)[current_pos];
+
+ if (current_chr == '\0')
+ break;
+
+ current_pos++;
+
+ if (current_chr == '\n' || current_pos > end_search)
+ break;
+ }
+
+ /* use virtual_pos as index of start of current chunk */
+ g_string_append_len (lc_mc_search->regex_buffer, (const char *) user_data + virtual_pos,
+ current_pos - virtual_pos);
+ virtual_pos = current_pos;
+ }
+
+ switch (mc_search__regex_found_cond (lc_mc_search, lc_mc_search->regex_buffer))
+ {
+ case COND__FOUND_OK:
+#ifdef SEARCH_TYPE_GLIB
+ g_match_info_fetch_pos (lc_mc_search->regex_match_info, 0, &start_pos, &end_pos);
+#else /* SEARCH_TYPE_GLIB */
+ start_pos = lc_mc_search->iovector[0];
+ end_pos = lc_mc_search->iovector[1];
+#endif /* SEARCH_TYPE_GLIB */
+ if (found_len != NULL)
+ *found_len = end_pos - start_pos;
+ lc_mc_search->normal_offset = lc_mc_search->start_buffer + start_pos;
+ return TRUE;
+ case COND__NOT_ALL_FOUND:
+ break;
+ default:
+ g_string_free (lc_mc_search->regex_buffer, TRUE);
+ lc_mc_search->regex_buffer = NULL;
+ return FALSE;
+ }
+
+ if ((lc_mc_search->update_fn != NULL) &&
+ ((lc_mc_search->update_fn) (user_data, current_pos) == MC_SEARCH_CB_ABORT))
+ ret = MC_SEARCH_CB_ABORT;
+
+ if (ret == MC_SEARCH_CB_ABORT || ret == MC_SEARCH_CB_NOTFOUND)
+ break;
+ }
+
+ g_string_free (lc_mc_search->regex_buffer, TRUE);
+ lc_mc_search->regex_buffer = NULL;
+
+ MC_PTR_FREE (lc_mc_search->error_str);
+ lc_mc_search->error = ret == MC_SEARCH_CB_ABORT ? MC_SEARCH_E_ABORT : MC_SEARCH_E_NOTFOUND;
+
+ return FALSE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+GString *
+mc_search_regex_prepare_replace_str (mc_search_t * lc_mc_search, GString * replace_str)
+{
+ GString *ret;
+
+ int num_replace_tokens;
+ gsize loop;
+ gsize prev = 0;
+ replace_transform_type_t replace_flags = REPLACE_T_NO_TRANSFORM;
+
+ num_replace_tokens =
+ mc_search_regex__get_max_num_of_replace_tokens (replace_str->str, replace_str->len);
+
+ if (lc_mc_search->num_results < 0)
+ return mc_g_string_dup (replace_str);
+
+ if (num_replace_tokens > lc_mc_search->num_results - 1
+ || num_replace_tokens > MC_SEARCH__NUM_REPLACE_ARGS)
+ {
+ mc_search_set_error (lc_mc_search, MC_SEARCH_E_REGEX_REPLACE, "%s",
+ _(STR_E_RPL_NOT_EQ_TO_FOUND));
+ return NULL;
+ }
+
+ ret = g_string_sized_new (64);
+
+ for (loop = 0; loop < replace_str->len - 1; loop++)
+ {
+ int lc_index;
+ gchar *tmp_str;
+ gsize len = 0;
+
+ lc_index = mc_search_regex__process_replace_str (replace_str, loop, &len, &replace_flags);
+
+ if (lc_index == REPLACE_PREPARE_T_NOTHING_SPECIAL)
+ {
+ if (len != 0)
+ {
+ mc_search_regex__process_append_str (ret, replace_str->str + prev, loop - prev,
+ &replace_flags);
+ mc_search_regex__process_append_str (ret, replace_str->str + loop + 1, len - 1,
+ &replace_flags);
+ prev = loop + len;
+ loop = prev - 1; /* prepare to loop++ */
+ }
+
+ continue;
+ }
+
+ if (lc_index == REPLACE_PREPARE_T_REPLACE_FLAG)
+ {
+ if (loop != 0)
+ mc_search_regex__process_append_str (ret, replace_str->str + prev, loop - prev,
+ &replace_flags);
+ prev = loop + len;
+ loop = prev - 1; /* prepare to loop++ */
+ continue;
+ }
+
+ /* escape sequence */
+ if (lc_index == REPLACE_PREPARE_T_ESCAPE_SEQ)
+ {
+ mc_search_regex__process_append_str (ret, replace_str->str + prev, loop - prev,
+ &replace_flags);
+ /* call process_escape_sequence without starting '\\' */
+ mc_search_regex__process_escape_sequence (ret, replace_str->str + loop + 1, len - 1,
+ &replace_flags, lc_mc_search->is_utf8);
+ prev = loop + len;
+ loop = prev - 1; /* prepare to loop++ */
+ continue;
+ }
+
+ /* invalid capture buffer number */
+ if (lc_index > lc_mc_search->num_results)
+ {
+ g_string_free (ret, TRUE);
+ mc_search_set_error (lc_mc_search, MC_SEARCH_E_REGEX_REPLACE,
+ _(STR_E_RPL_INVALID_TOKEN), lc_index);
+ return NULL;
+ }
+
+ tmp_str = mc_search_regex__get_token_by_num (lc_mc_search, lc_index);
+
+ if (loop != 0)
+ mc_search_regex__process_append_str (ret, replace_str->str + prev, loop - prev,
+ &replace_flags);
+
+ mc_search_regex__process_append_str (ret, tmp_str, -1, &replace_flags);
+ g_free (tmp_str);
+
+ prev = loop + len;
+ loop = prev - 1; /* prepare to loop++ */
+ }
+
+ mc_search_regex__process_append_str (ret, replace_str->str + prev, replace_str->len - prev,
+ &replace_flags);
+
+ return ret;
+}
diff --git a/lib/search/search.c b/lib/search/search.c
new file mode 100644
index 0000000..3fdbc26
--- /dev/null
+++ b/lib/search/search.c
@@ -0,0 +1,521 @@
+/*
+ Search text engine.
+ Interface functions
+
+ Copyright (C) 2009-2022
+ Free Software Foundation, Inc.
+
+ Written by:
+ Slava Zanko <slavazanko@gmail.com>, 2009
+ Andrew Borodin <aborodin@vmail.ru>, 2013
+
+ 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 <stdarg.h>
+#include <stdlib.h>
+#include <sys/types.h>
+
+#include "lib/global.h"
+#include "lib/strutil.h"
+#include "lib/search.h"
+#include "lib/util.h"
+#ifdef HAVE_CHARSET
+#include "lib/charsets.h"
+#endif
+
+#include "internal.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+/*** file scope type declarations ****************************************************************/
+
+/*** file scope variables ************************************************************************/
+
+static const mc_search_type_str_t mc_search__list_types[] = {
+ {N_("No&rmal"), MC_SEARCH_T_NORMAL},
+ {N_("Re&gular expression"), MC_SEARCH_T_REGEX},
+ {N_("He&xadecimal"), MC_SEARCH_T_HEX},
+ {N_("Wil&dcard search"), MC_SEARCH_T_GLOB},
+ {NULL, MC_SEARCH_T_INVALID}
+};
+
+/*** file scope functions ************************************************************************/
+
+static mc_search_cond_t *
+mc_search__cond_struct_new (mc_search_t * lc_mc_search, const GString * str, const char *charset)
+{
+ mc_search_cond_t *mc_search_cond;
+
+ mc_search_cond = g_malloc0 (sizeof (mc_search_cond_t));
+ mc_search_cond->str = mc_g_string_dup (str);
+ mc_search_cond->charset = g_strdup (charset);
+
+ switch (lc_mc_search->search_type)
+ {
+ case MC_SEARCH_T_GLOB:
+ mc_search__cond_struct_new_init_glob (charset, lc_mc_search, mc_search_cond);
+ break;
+ case MC_SEARCH_T_NORMAL:
+ mc_search__cond_struct_new_init_normal (charset, lc_mc_search, mc_search_cond);
+ break;
+ case MC_SEARCH_T_REGEX:
+ mc_search__cond_struct_new_init_regex (charset, lc_mc_search, mc_search_cond);
+ break;
+ case MC_SEARCH_T_HEX:
+ mc_search__cond_struct_new_init_hex (charset, lc_mc_search, mc_search_cond);
+ break;
+ default:
+ break;
+ }
+ return mc_search_cond;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+mc_search__cond_struct_free (mc_search_cond_t * mc_search_cond)
+{
+ if (mc_search_cond->upper != NULL)
+ g_string_free (mc_search_cond->upper, TRUE);
+
+ if (mc_search_cond->lower != NULL)
+ g_string_free (mc_search_cond->lower, TRUE);
+
+ g_string_free (mc_search_cond->str, TRUE);
+ g_free (mc_search_cond->charset);
+
+#ifdef SEARCH_TYPE_GLIB
+ if (mc_search_cond->regex_handle != NULL)
+ g_regex_unref (mc_search_cond->regex_handle);
+#else /* SEARCH_TYPE_GLIB */
+ g_free (mc_search_cond->regex_handle);
+#endif /* SEARCH_TYPE_GLIB */
+
+ g_free (mc_search_cond);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+mc_search__conditions_free (GPtrArray * array)
+{
+ g_ptr_array_foreach (array, (GFunc) mc_search__cond_struct_free, NULL);
+ g_ptr_array_free (array, TRUE);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+/* Init search descriptor.
+ *
+ * @param original pattern to search
+ * @param original_charset charset of #original. If NULL then cp_display will be used
+ *
+ * @return new mc_search_t object. Use #mc_search_free() to free it.
+ */
+
+mc_search_t *
+mc_search_new (const gchar * original, const gchar * original_charset)
+{
+ if (original == NULL)
+ return NULL;
+
+ return mc_search_new_len (original, strlen (original), original_charset);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/* Init search descriptor.
+ *
+ * @param original pattern to search
+ * @param original_len length of #original or -1 if #original is NULL-terminated
+ * @param original_charset charset of #original. If NULL then cp_display will be used
+ *
+ * @return new mc_search_t object. Use #mc_search_free() to free it.
+ */
+
+mc_search_t *
+mc_search_new_len (const gchar * original, gsize original_len, const gchar * original_charset)
+{
+ mc_search_t *lc_mc_search;
+
+ if (original == NULL || original_len == 0)
+ return NULL;
+
+ lc_mc_search = g_new0 (mc_search_t, 1);
+ lc_mc_search->original.str = g_string_new_len (original, original_len);
+#ifdef HAVE_CHARSET
+ lc_mc_search->original.charset =
+ g_strdup (original_charset != NULL
+ && *original_charset != '\0' ? original_charset : cp_display);
+#else
+ (void) original_charset;
+#endif
+
+ return lc_mc_search;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+mc_search_free (mc_search_t * lc_mc_search)
+{
+ if (lc_mc_search == NULL)
+ return;
+
+ g_string_free (lc_mc_search->original.str, TRUE);
+#ifdef HAVE_CHARSET
+ g_free (lc_mc_search->original.charset);
+#endif
+ g_free (lc_mc_search->error_str);
+
+ if (lc_mc_search->prepared.conditions != NULL)
+ mc_search__conditions_free (lc_mc_search->prepared.conditions);
+
+#ifdef SEARCH_TYPE_GLIB
+ if (lc_mc_search->regex_match_info != NULL)
+ g_match_info_free (lc_mc_search->regex_match_info);
+#else /* SEARCH_TYPE_GLIB */
+ g_free (lc_mc_search->regex_match_info);
+#endif /* SEARCH_TYPE_GLIB */
+
+ if (lc_mc_search->regex_buffer != NULL)
+ g_string_free (lc_mc_search->regex_buffer, TRUE);
+
+ g_free (lc_mc_search);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_search_prepare (mc_search_t * lc_mc_search)
+{
+ GPtrArray *ret;
+
+ if (lc_mc_search->prepared.conditions != NULL)
+ return lc_mc_search->prepared.result;
+
+ ret = g_ptr_array_new ();
+#ifdef HAVE_CHARSET
+ if (!lc_mc_search->is_all_charsets)
+ g_ptr_array_add (ret,
+ mc_search__cond_struct_new (lc_mc_search, lc_mc_search->original.str,
+ lc_mc_search->original.charset));
+ else
+ {
+ gsize loop1;
+
+ for (loop1 = 0; loop1 < codepages->len; loop1++)
+ {
+ const char *id;
+
+ id = ((codepage_desc *) g_ptr_array_index (codepages, loop1))->id;
+ if (g_ascii_strcasecmp (id, lc_mc_search->original.charset) == 0)
+ g_ptr_array_add (ret,
+ mc_search__cond_struct_new (lc_mc_search,
+ lc_mc_search->original.str,
+ lc_mc_search->original.charset));
+ else
+ {
+ GString *buffer;
+
+ buffer =
+ mc_search__recode_str (lc_mc_search->original.str->str,
+ lc_mc_search->original.str->len,
+ lc_mc_search->original.charset, id);
+ g_ptr_array_add (ret, mc_search__cond_struct_new (lc_mc_search, buffer, id));
+ g_string_free (buffer, TRUE);
+ }
+ }
+ }
+#else
+ g_ptr_array_add (ret,
+ mc_search__cond_struct_new (lc_mc_search, lc_mc_search->original.str,
+ str_detect_termencoding ()));
+#endif
+ lc_mc_search->prepared.conditions = ret;
+ lc_mc_search->prepared.result = (lc_mc_search->error == MC_SEARCH_E_OK);
+
+ return lc_mc_search->prepared.result;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+/**
+ * Carries out the search.
+ *
+ * Returns TRUE if found.
+ *
+ * Returns FALSE if not found. In this case, lc_mc_search->error reveals
+ * the reason:
+ *
+ * - MC_SEARCH_E_NOTFOUND: the pattern isn't in the subject string.
+ * - MC_SEARCH_E_ABORT: the user aborted the search.
+ * - For any other reason (but not for the above two!): the description
+ * is in lc_mc_search->error_str.
+ */
+gboolean
+mc_search_run (mc_search_t * lc_mc_search, const void *user_data,
+ gsize start_search, gsize end_search, gsize * found_len)
+{
+ gboolean ret = FALSE;
+
+ if (lc_mc_search == NULL || user_data == NULL)
+ return FALSE;
+ if (!mc_search_is_type_avail (lc_mc_search->search_type))
+ {
+ mc_search_set_error (lc_mc_search, MC_SEARCH_E_INPUT, "%s", _(STR_E_UNKNOWN_TYPE));
+ return FALSE;
+ }
+#ifdef SEARCH_TYPE_GLIB
+ if (lc_mc_search->regex_match_info != NULL)
+ {
+ g_match_info_free (lc_mc_search->regex_match_info);
+ lc_mc_search->regex_match_info = NULL;
+ }
+#endif /* SEARCH_TYPE_GLIB */
+
+ mc_search_set_error (lc_mc_search, MC_SEARCH_E_OK, NULL);
+
+ if (!mc_search_prepare (lc_mc_search))
+ return FALSE;
+
+ switch (lc_mc_search->search_type)
+ {
+ case MC_SEARCH_T_NORMAL:
+ ret = mc_search__run_normal (lc_mc_search, user_data, start_search, end_search, found_len);
+ break;
+ case MC_SEARCH_T_REGEX:
+ ret = mc_search__run_regex (lc_mc_search, user_data, start_search, end_search, found_len);
+ break;
+ case MC_SEARCH_T_GLOB:
+ ret = mc_search__run_glob (lc_mc_search, user_data, start_search, end_search, found_len);
+ break;
+ case MC_SEARCH_T_HEX:
+ ret = mc_search__run_hex (lc_mc_search, user_data, start_search, end_search, found_len);
+ break;
+ default:
+ break;
+ }
+ return ret;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_search_is_type_avail (mc_search_type_t search_type)
+{
+ switch (search_type)
+ {
+ case MC_SEARCH_T_GLOB:
+ case MC_SEARCH_T_NORMAL:
+ case MC_SEARCH_T_REGEX:
+ case MC_SEARCH_T_HEX:
+ return TRUE;
+ default:
+ break;
+ }
+ return FALSE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+const mc_search_type_str_t *
+mc_search_types_list_get (size_t * num)
+{
+ /* don't count last NULL item */
+ if (num != NULL)
+ *num = G_N_ELEMENTS (mc_search__list_types) - 1;
+
+ return mc_search__list_types;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+GString *
+mc_search_prepare_replace_str (mc_search_t * lc_mc_search, GString * replace_str)
+{
+ GString *ret;
+
+ if (replace_str == NULL || replace_str->len == 0)
+ return g_string_new ("");
+
+ if (lc_mc_search == NULL)
+ return mc_g_string_dup (replace_str);
+
+ switch (lc_mc_search->search_type)
+ {
+ case MC_SEARCH_T_REGEX:
+ ret = mc_search_regex_prepare_replace_str (lc_mc_search, replace_str);
+ break;
+ case MC_SEARCH_T_GLOB:
+ ret = mc_search_glob_prepare_replace_str (lc_mc_search, replace_str);
+ break;
+ case MC_SEARCH_T_NORMAL:
+ ret = mc_search_normal_prepare_replace_str (lc_mc_search, replace_str);
+ break;
+ case MC_SEARCH_T_HEX:
+ ret = mc_search_hex_prepare_replace_str (lc_mc_search, replace_str);
+ break;
+ default:
+ ret = mc_g_string_dup (replace_str);
+ break;
+ }
+ return ret;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+char *
+mc_search_prepare_replace_str2 (mc_search_t * lc_mc_search, const char *replace_str)
+{
+ GString *ret;
+ GString *replace_str2;
+
+ replace_str2 = g_string_new (replace_str);
+ ret = mc_search_prepare_replace_str (lc_mc_search, replace_str2);
+ g_string_free (replace_str2, TRUE);
+ return (ret != NULL) ? g_string_free (ret, FALSE) : NULL;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_search_is_fixed_search_str (const mc_search_t * lc_mc_search)
+{
+ if (lc_mc_search == NULL)
+ return FALSE;
+ switch (lc_mc_search->search_type)
+ {
+ case MC_SEARCH_T_REGEX:
+ case MC_SEARCH_T_GLOB:
+ return FALSE;
+ default:
+ return TRUE;
+ }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/* Search specified pattern in specified string.
+ *
+ * @param pattern string to search
+ * @param pattern_charset charset of #pattern. If NULL then cp_display will be used
+ * @param str string where search #pattern
+ * @param search type (normal, regex, hex or glob)
+ *
+ * @return TRUE if found is successful, FALSE otherwise.
+ */
+
+gboolean
+mc_search (const gchar * pattern, const gchar * pattern_charset, const gchar * str,
+ mc_search_type_t type)
+{
+ gboolean ret;
+ mc_search_t *search;
+
+ if (str == NULL)
+ return FALSE;
+
+ search = mc_search_new (pattern, pattern_charset);
+ if (search == NULL)
+ return FALSE;
+
+ search->search_type = type;
+ search->is_case_sensitive = TRUE;
+
+ if (type == MC_SEARCH_T_GLOB)
+ search->is_entire_line = TRUE;
+
+ ret = mc_search_run (search, str, 0, strlen (str), NULL);
+ mc_search_free (search);
+ return ret;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+int
+mc_search_getstart_result_by_num (mc_search_t * lc_mc_search, int lc_index)
+{
+ if (lc_mc_search == NULL)
+ return 0;
+ if (lc_mc_search->search_type == MC_SEARCH_T_NORMAL)
+ return 0;
+#ifdef SEARCH_TYPE_GLIB
+ {
+ gint start_pos;
+ gint end_pos;
+
+ g_match_info_fetch_pos (lc_mc_search->regex_match_info, lc_index, &start_pos, &end_pos);
+ return (int) start_pos;
+ }
+#else /* SEARCH_TYPE_GLIB */
+ return lc_mc_search->iovector[lc_index * 2];
+#endif /* SEARCH_TYPE_GLIB */
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+int
+mc_search_getend_result_by_num (mc_search_t * lc_mc_search, int lc_index)
+{
+ if (lc_mc_search == NULL)
+ return 0;
+ if (lc_mc_search->search_type == MC_SEARCH_T_NORMAL)
+ return 0;
+#ifdef SEARCH_TYPE_GLIB
+ {
+ gint start_pos;
+ gint end_pos;
+
+ g_match_info_fetch_pos (lc_mc_search->regex_match_info, lc_index, &start_pos, &end_pos);
+ return (int) end_pos;
+ }
+#else /* SEARCH_TYPE_GLIB */
+ return lc_mc_search->iovector[lc_index * 2 + 1];
+#endif /* SEARCH_TYPE_GLIB */
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/**
+ * Replace an old error code and message of an mc_search_t object.
+ *
+ * @param mc_search mc_search_t object
+ * @param code error code, one of mc_search_error_t values
+ * @param format format of error message. If NULL, the old error string is free'd and become NULL
+ */
+
+void
+mc_search_set_error (mc_search_t * lc_mc_search, mc_search_error_t code, const gchar * format, ...)
+{
+ lc_mc_search->error = code;
+
+ MC_PTR_FREE (lc_mc_search->error_str);
+
+ if (format != NULL)
+ {
+ va_list args;
+
+ va_start (args, format);
+ lc_mc_search->error_str = g_strdup_vprintf (format, args);
+ va_end (args);
+ }
+}
+
+/* --------------------------------------------------------------------------------------------- */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 12:33:54 +0000