| blob | 4cf40af661f355e35afd58e0b09c4255b3183854 |
1 Subject: escape_literal() macro
3 Escape special chars in ~string~, so that the string can be searched with a
4 regular expression.
6 ---
8 doc/help.etx | 4 ++++
9 source/built-ins.h | 1 +
10 source/highlightData.c | 2 +-
11 source/macro.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
12 4 files changed, 54 insertions(+), 1 deletion(-)
14 diff --quilt old/source/macro.c new/source/macro.c
15 --- old/source/macro.c
16 +++ new/source/macro.c
17 @@ -3677,6 +3677,54 @@ static int timerRemoveMS(WindowInfo *win
18 return True;
19 }
21 +/*
22 + * escaped_string = escape_literal(string)
23 + */
24 +static int escapeLiteralMS(WindowInfo *window, DataValue *argList, int nArgs,
25 + DataValue *result, char **errMsg)
26 +{
27 + static const char chars_to_escape[] = "()[]<>{}.\\|^$*+?&";
28 + char stringStorage[TYPE_INT_STR_SIZE(int)];
29 + char *string = NULL;
30 + char *escstring = NULL;
31 + int stringlen;
32 + int escstringlen;
33 + int i;
34 +
35 + if (nArgs != 1) {
36 + return wrongNArgsErr(errMsg);
37 + }
38 +
39 + if (!readStringArg(argList[0], &string, stringStorage, errMsg)) {
40 + return False;
41 + }
42 +
43 + stringlen = strlen(string);
44 +
45 + escstringlen = stringlen;
46 + for (i = 0; i < stringlen; i++) {
47 + if (strchr(chars_to_escape, string[i])) {
48 + escstringlen++;
49 + }
50 + }
51 +
52 + result->tag = STRING_TAG;
53 + if (!AllocNString(&result->val.str, escstringlen + 1)) {
54 + M_FAILURE("Failed to allocate return value in %s");
55 + }
56 +
57 + escstring = result->val.str.rep;
58 + while (*string) {
59 + if (strchr(chars_to_escape, *string)) {
60 + *escstring++ = '\\';
61 + }
62 + *escstring++ = *string++;
63 + }
64 + *escstring = '\0';
65 +
66 + return True;
67 +}
68 +
69 /* T Balinski */
70 static int listDialogMS(WindowInfo *window, DataValue *argList, int nArgs,
71 DataValue *result, char **errMsg)
72 diff --quilt old/doc/help.etx new/doc/help.etx
73 --- old/doc/help.etx
74 +++ new/doc/help.etx
75 @@ -2702,6 +2702,10 @@ Macro Subroutines
76 first button is number 1), or 0 if the user closed the dialog via the window
77 close box.
79 +**escape_literal( string )**
80 + Escape special chars in ~string~, so that the string can be searched with a
81 + regular expression.
82 +
83 **filename_dialog( [title[, mode[, defaultPath[, filter[, defaultName]]]]] )**
84 Presents a file selection dialog with the given title to the user that
85 prompts for a new or existing file.
86 diff --quilt old/source/highlightData.c new/source/highlightData.c
87 --- old/source/highlightData.c
88 +++ new/source/highlightData.c
89 @@ -551,7 +551,7 @@ static char *DefaultPatternSets[] = {
90 Built-in Misc Vars:\"(?<!\\Y)\\$(?:active_pane|calltip_ID|column|cursor|display_width|empty_array|file_name|file_path|language_mode|line|locked|max_font_width|min_font_width|modified|n_display_lines|n_panes|rangeset_list|read_only|selection_(?:start|end|left|right)|server_name|text_length|top_line|transient|VERSION|NEDIT_HOME)>\":::Identifier::\n\
91 Built-in Pref Vars:\"(?<!\\Y)\\$(?:auto_indent|em_tab_dist|file_format|font_name|font_name_bold|font_name_bold_italic|font_name_italic|highlight_syntax|incremental_backup|incremental_search_line|make_backup_copy|match_syntax_based|overtype_mode|show_line_numbers|show_matching|statistics_line|tab_dist|use_tabs|wrap_margin|wrap_text)>\":::Identifier2::\n\
92 Built-in Special Vars:\"(?<!\\Y)\\$(?:args|[1-9]|list_dialog_button|n_args|read_status|search_end|shell_cmd_status|string_dialog_button|sub_sep)>\":::String1::\n\
93 - Built-in Subrs:\"<(?:args|append_file|beep|call|calltip|clipboard_to_string|define|dialog|filename_dialog|dict_(?:insert|complete|save|append|is_element)|focus_window|get_character|get_matching|get_pattern_(by_name|at_pos)|get_range|get_selection|get_style_(by_name|at_pos)|getenv|highlight_calltip_line|kill_calltip|length|list_dialog|max|min|n_args|rangeset_(?:add|create|destroy|get_by_name|includes|info|invert|range|set_color|set_mode|set_name|subtract)|read_file|replace_in_string|replace_range|replace_selection|replace_substring|search|search_string|select|select_rectangle|set_cursor_pos|set_transient|set_window_title|shell_command|split|string_compare|string_dialog|string_to_clipboard|substring|t_print|timer_(?:add|remove)|to_(?:column|line|pos)|tolower|toupper|valid_number|write_file)(?=\\s*\\()\":::Subroutine::\n\
94 + Built-in Subrs:\"<(?:args|append_file|beep|call|calltip|clipboard_to_string|define|dialog|filename_dialog|dict_(?:insert|complete|save|append|is_element)|escape_literal|focus_window|get_character|get_matching|get_pattern_(by_name|at_pos)|get_range|get_selection|get_style_(by_name|at_pos)|getenv|highlight_calltip_line|kill_calltip|length|list_dialog|max|min|n_args|rangeset_(?:add|create|destroy|get_by_name|includes|info|invert|range|set_color|set_mode|set_name|subtract)|read_file|replace_in_string|replace_range|replace_selection|replace_substring|search|search_string|select|select_rectangle|set_cursor_pos|set_transient|set_window_title|shell_command|split|string_compare|string_dialog|string_to_clipboard|substring|t_print|timer_(?:add|remove)|to_(?:column|line|pos)|tolower|toupper|valid_number|write_file)(?=\\s*\\()\":::Subroutine::\n\
95 Menu Actions:\"<(?:new(?:_tab|_opposite)?|open|open-dialog|open_dialog|open-selected|open_selected|close|save|save-as|save_as|save-as-dialog|save_as_dialog|revert-to-saved|revert_to_saved|revert_to_saved_dialog|include-file|include_file|include-file-dialog|include_file_dialog|load-macro-file|load_macro_file|load-macro-file-dialog|load_macro_file_dialog|load-tags-file|load_tags_file|load-tags-file-dialog|load_tags_file_dialog|unload_tags_file|load_tips_file|load_tips_file_dialog|unload_tips_file|print|print-selection|print_selection|exit|undo|redo|delete|select-all|select_all|shift-left|shift_left|shift-left-by-tab|shift_left_by_tab|shift-right|shift_right|shift-right-by-tab|shift_right_by_tab|find|find-dialog|find_dialog|find-again|find_again|find-selection|find_selection|find_incremental|start_incremental_find|replace|replace-dialog|replace_dialog|replace-all|replace_all|replace-in-selection|replace_in_selection|replace-again|replace_again|replace_find|replace_find_same|replace_find_again|goto-line-number|goto_line_number|goto-line-number-dialog|goto_line_number_dialog|goto-selected|goto_selected|mark|mark-dialog|mark_dialog|goto-mark|goto_mark|goto-mark-dialog|goto_mark_dialog|match|select_to_matching|goto_matching|find-definition|find_definition|show_tip|split-pane|split_pane|close-pane|close_pane|detach_document(?:_dialog)?|move_document_dialog|(?:next|previous|last)_document|uppercase|lowercase|fill-paragraph|fill_paragraph|control-code-dialog|control_code_dialog|filter-selection-dialog|filter_selection_dialog|filter-selection|filter_selection|execute-command|execute_command|execute-command-dialog|execute_command_dialog|execute-command-line|execute_command_line|shell-menu-command|shell_menu_command|macro-menu-command|macro_menu_command|bg_menu_command|post_window_bg_menu|post_tab_context_menu|beginning-of-selection|beginning_of_selection|end-of-selection|end_of_selection|repeat_macro|repeat_dialog|raise_window|focus_pane|set_statistics_line|set_incremental_search_line|set_show_line_numbers|set_auto_indent|set_wrap_text|set_wrap_margin|set_highlight_syntax|set_make_backup_copy|set_incremental_backup|set_show_matching|set_match_syntax_based|set_overtype_mode|set_locked|set_tab_dist|set_em_tab_dist|set_use_tabs|set_fonts|set_language_mode)(?=\\s*\\()\":::Subroutine::\n\
96 Text Actions:\"<(?:self-insert|self_insert|grab-focus|grab_focus|extend-adjust|extend_adjust|extend-start|extend_start|extend-end|extend_end|secondary-adjust|secondary_adjust|secondary-or-drag-adjust|secondary_or_drag_adjust|secondary-start|secondary_start|secondary-or-drag-start|secondary_or_drag_start|process-bdrag|process_bdrag|move-destination|move_destination|move-to|move_to|move-to-or-end-drag|move_to_or_end_drag|end_drag|copy-to|copy_to|copy-to-or-end-drag|copy_to_or_end_drag|exchange|process-cancel|process_cancel|paste-clipboard|paste_clipboard|copy-clipboard|copy_clipboard|cut-clipboard|cut_clipboard|copy-primary|copy_primary|cut-primary|cut_primary|newline|newline-and-indent|newline_and_indent|newline-no-indent|newline_no_indent|delete-selection|delete_selection|delete-previous-character|delete_previous_character|delete-next-character|delete_next_character|delete-previous-word|delete_previous_word|delete-next-word|delete_next_word|delete-to-start-of-line|delete_to_start_of_line|delete-to-end-of-line|delete_to_end_of_line|forward-character|forward_character|backward-character|backward_character|key-select|key_select|process-up|process_up|process-down|process_down|process-shift-up|process_shift_up|process-shift-down|process_shift_down|process-home|process_home|forward-word|forward_word|backward-word|backward_word|forward-paragraph|forward_paragraph|backward-paragraph|backward_paragraph|beginning-of-line|beginning_of_line|end-of-line|end_of_line|beginning-of-file|beginning_of_file|end-of-file|end_of_file|next-page|next_page|previous-page|previous_page|page-left|page_left|page-right|page_right|toggle-overstrike|toggle_overstrike|scroll-up|scroll_up|scroll-down|scroll_down|scroll_left|scroll_right|scroll-to-line|scroll_to_line|select-all|select_all|deselect-all|deselect_all|focusIn|focusOut|process-return|process_return|process-tab|process_tab|insert-string|insert_string|mouse_pan)(?=\\s*\\()\":::Subroutine::\n\
97 Macro Hooks:\"<(?:(?:pre|post)_(?:open|save)|cursor_moved|modified|(?:losing_)?focus|language_mode)_hook(?=\\s*\\()\":::Subroutine1::\n\
98 diff --quilt old/source/built-ins.h new/source/built-ins.h
99 --- old/source/built-ins.h
100 +++ new/source/built-ins.h
101 @@ -75,6 +75,7 @@ MS(to_column, toColumn)
102 MS(set_window_title, setWindowTitle)
103 MS(timer_add, timerAdd)
104 MS(timer_remove, timerRemove)
105 +MS(escape_literal, escapeLiteral)
107 MV(cursor, cursor)
108 MV(line, line)