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Diffstat (limited to 'lib/search/glob.c')
| -rw-r--r-- | lib/search/glob.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/lib/search/glob.c b/lib/search/glob.c new file mode 100644 index 0000000..5874aba --- /dev/null +++ b/lib/search/glob.c @@ -0,0 +1,207 @@ +/* + Search text engine. + Glob-style pattern matching + + Copyright (C) 2009-2023 + 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 ****************************************************************/ + +/*** forward declarations (file scope functions) *************************************************/ + +/*** 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; +} + +/* --------------------------------------------------------------------------------------------- */ |