| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #include "selection.h" | ||
| 2 | #include "editor.h" | ||
| 3 | #include "regexp.h" | ||
| 4 | #include "util/unicode.h" | ||
| 5 | |||
| 6 | 7 | static bool include_cursor_char_in_selection(const View *view) | |
| 7 | { | ||
| 8 | 7 | const EditorState *e = view->window->editor; | |
| 9 |
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7 | if (!e->options.select_cursor_char) { |
| 10 | return false; | ||
| 11 | } | ||
| 12 | |||
| 13 | 7 | bool overwrite = view->buffer->options.overwrite; | |
| 14 |
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7 | CursorInputMode mode = overwrite ? CURSOR_MODE_OVERWRITE : CURSOR_MODE_INSERT; |
| 15 | 7 | TermCursorType type = e->cursor_styles[mode].type; | |
| 16 |
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7 | if (type == CURSOR_KEEP) { |
| 17 | 7 | type = e->cursor_styles[CURSOR_MODE_DEFAULT].type; | |
| 18 | } | ||
| 19 | |||
| 20 | // If "select-cursor-char" option is true, include character under cursor | ||
| 21 | // in selections for any cursor type except bars (where it makes no sense | ||
| 22 | // to do so) | ||
| 23 | 7 | return !(type == CURSOR_STEADY_BAR || type == CURSOR_BLINKING_BAR); | |
| 24 | } | ||
| 25 | |||
| 26 | 22 | SelectionInfo init_selection(const View *view) | |
| 27 | { | ||
| 28 | 22 | size_t so = view->sel_so; | |
| 29 | 22 | size_t eo = block_iter_get_offset(&view->cursor); | |
| 30 | 22 | bool swapped = (so > eo); | |
| 31 | |||
| 32 | 66 | SelectionInfo info = { | |
| 33 | .si = view->cursor, | ||
| 34 |
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22 | .so = swapped ? eo : so, |
| 35 |
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22 | .eo = swapped ? so : eo, |
| 36 | .swapped = swapped, | ||
| 37 | }; | ||
| 38 | |||
| 39 |
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22 | if (!swapped) { |
| 40 | 8 | block_iter_goto_offset(&info.si, so); | |
| 41 | } | ||
| 42 | |||
| 43 | 22 | BlockIter ei = info.si; | |
| 44 | 22 | block_iter_skip_bytes(&ei, info.eo - info.so); | |
| 45 |
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22 | if (block_iter_is_eof(&ei)) { |
| 46 |
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1 | if (info.so == info.eo) { |
| 47 | ✗ | return info; | |
| 48 | } | ||
| 49 | 1 | CodePoint u; | |
| 50 | 1 | info.eo -= block_iter_prev_char(&ei, &u); | |
| 51 | } | ||
| 52 | |||
| 53 |
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22 | if (view->selection == SELECT_LINES) { |
| 54 | 15 | info.so -= block_iter_bol(&info.si); | |
| 55 | 15 | info.eo += block_iter_eat_line(&ei); | |
| 56 |
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7 | } else if (include_cursor_char_in_selection(view)) { |
| 57 | 7 | info.eo += block_iter_next_column(&ei); | |
| 58 | } | ||
| 59 | |||
| 60 | 22 | return info; | |
| 61 | } | ||
| 62 | |||
| 63 | 11 | size_t prepare_selection(View *view) | |
| 64 | { | ||
| 65 | 11 | SelectionInfo info = init_selection(view); | |
| 66 | 11 | view->cursor = info.si; | |
| 67 | 11 | return info.eo - info.so; | |
| 68 | } | ||
| 69 | |||
| 70 | 9 | size_t get_nr_selected_lines(const SelectionInfo *info) | |
| 71 | { | ||
| 72 | 9 | BlockIter bi = info->si; | |
| 73 | 9 | size_t nr_lines = 0; | |
| 74 | |||
| 75 |
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54 | for (size_t pos = info->so, eo = info->eo; pos < eo; nr_lines++) { |
| 76 | 45 | pos += block_iter_eat_line(&bi); | |
| 77 | 45 | BUG_ON(block_iter_is_eof(&bi) && pos != info->eo); | |
| 78 | } | ||
| 79 | |||
| 80 | 9 | return nr_lines; | |
| 81 | } | ||
| 82 | |||
| 83 | ✗ | size_t get_nr_selected_chars(const SelectionInfo *info) | |
| 84 | { | ||
| 85 | ✗ | BlockIter bi = info->si; | |
| 86 | ✗ | size_t nr_chars = 0; | |
| 87 | ✗ | CodePoint u; | |
| 88 | |||
| 89 | ✗ | for (size_t pos = info->so, eo = info->eo; pos < eo; nr_chars++) { | |
| 90 | ✗ | pos += block_iter_next_char(&bi, &u); | |
| 91 | } | ||
| 92 | |||
| 93 | ✗ | return nr_chars; | |
| 94 | } | ||
| 95 | |||
| 96 | 4 | bool line_has_opening_brace(StringView line) | |
| 97 | { | ||
| 98 | 4 | static regex_t re; | |
| 99 | 4 | static bool compiled; | |
| 100 |
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4 | if (!compiled) { |
| 101 | // TODO: Reimplement without using regex | ||
| 102 | 1 | static const char pat[] = "\\{[ \t]*(//.*|/\\*.*\\*/[ \t]*)?$"; | |
| 103 | 1 | regexp_compile_or_fatal_error(&re, pat, REG_NEWLINE | REG_NOSUB); | |
| 104 | 1 | compiled = true; | |
| 105 | } | ||
| 106 | |||
| 107 | 4 | regmatch_t m; | |
| 108 | 4 | return regexp_exec(&re, line.data, line.length, 0, &m, 0); | |
| 109 | } | ||
| 110 | |||
| 111 | 3 | bool line_has_closing_brace(StringView line) | |
| 112 | { | ||
| 113 | 3 | strview_trim_left(&line); | |
| 114 |
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3 | return line.length > 0 && line.data[0] == '}'; |
| 115 | } | ||
| 116 | |||
| 117 | /* | ||
| 118 | * Stupid { ... } block selector. | ||
| 119 | * | ||
| 120 | * Because braces can be inside strings or comments and writing real | ||
| 121 | * parser for many programming languages does not make sense the rules | ||
| 122 | * for selecting a block are made very simple. Line that matches \{\s*$ | ||
| 123 | * starts a block and line that matches ^\s*\} ends it. | ||
| 124 | */ | ||
| 125 | ✗ | void select_block(View *view) | |
| 126 | { | ||
| 127 | ✗ | BlockIter bi = view->cursor; | |
| 128 | ✗ | StringView line; | |
| 129 | ✗ | fetch_this_line(&bi, &line); | |
| 130 | |||
| 131 | // If current line does not match \{\s*$ but matches ^\s*\} then | ||
| 132 | // cursor is likely at end of the block you want to select | ||
| 133 | ✗ | if (!line_has_opening_brace(line) && line_has_closing_brace(line)) { | |
| 134 | ✗ | block_iter_prev_line(&bi); | |
| 135 | } | ||
| 136 | |||
| 137 | BlockIter sbi; | ||
| 138 | int level = 0; | ||
| 139 | ✗ | while (1) { | |
| 140 | ✗ | fetch_this_line(&bi, &line); | |
| 141 | ✗ | if (line_has_opening_brace(line)) { | |
| 142 | ✗ | if (level++ == 0) { | |
| 143 | ✗ | sbi = bi; | |
| 144 | ✗ | block_iter_next_line(&bi); | |
| 145 | ✗ | break; | |
| 146 | } | ||
| 147 | } | ||
| 148 | ✗ | if (line_has_closing_brace(line)) { | |
| 149 | ✗ | level--; | |
| 150 | } | ||
| 151 | |||
| 152 | ✗ | if (!block_iter_prev_line(&bi)) { | |
| 153 | ✗ | return; | |
| 154 | } | ||
| 155 | } | ||
| 156 | |||
| 157 | ✗ | BlockIter ebi; | |
| 158 | ✗ | while (1) { | |
| 159 | ✗ | fetch_this_line(&bi, &line); | |
| 160 | ✗ | if (line_has_closing_brace(line)) { | |
| 161 | ✗ | if (--level == 0) { | |
| 162 | ✗ | ebi = bi; | |
| 163 | ✗ | break; | |
| 164 | } | ||
| 165 | } | ||
| 166 | ✗ | if (line_has_opening_brace(line)) { | |
| 167 | ✗ | level++; | |
| 168 | } | ||
| 169 | |||
| 170 | ✗ | if (!block_iter_next_line(&bi)) { | |
| 171 | return; | ||
| 172 | } | ||
| 173 | } | ||
| 174 | |||
| 175 | ✗ | view->cursor = sbi; | |
| 176 | ✗ | view->sel_so = block_iter_get_offset(&ebi); | |
| 177 | ✗ | view->sel_eo = SEL_EO_RECALC; | |
| 178 | ✗ | view->selection = SELECT_LINES; | |
| 179 | ✗ | mark_all_lines_changed(view->buffer); | |
| 180 | } | ||
| 181 |