| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #include <stdlib.h> | ||
| 2 | #include <string.h> | ||
| 3 | #include "insert.h" | ||
| 4 | #include "block-iter.h" | ||
| 5 | #include "buffer.h" | ||
| 6 | #include "change.h" | ||
| 7 | #include "indent.h" | ||
| 8 | #include "options.h" | ||
| 9 | #include "selection.h" | ||
| 10 | #include "util/string.h" | ||
| 11 | #include "util/utf8.h" | ||
| 12 | |||
| 13 | 82 | void insert_text(View *view, const char *text, size_t size, bool move_after) | |
| 14 | { | ||
| 15 |
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82 | size_t del_count = view->selection ? prepare_selection(view) : 0; |
| 16 | 82 | unselect(view); | |
| 17 | 82 | buffer_replace_bytes(view, del_count, text, size); | |
| 18 |
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129 | block_iter_skip_bytes(&view->cursor, move_after ? size : 0); |
| 19 | 82 | } | |
| 20 | |||
| 21 | 32 | static size_t insert_nl_and_autoindent ( | |
| 22 | View *view, | ||
| 23 | StringView prev_line, | ||
| 24 | size_t del_count | ||
| 25 | ) { | ||
| 26 | 32 | String indent = get_indent_for_next_line(&view->buffer->options, prev_line); | |
| 27 |
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32 | if (indent.len == 0) { |
| 28 | 14 | BUG_ON(indent.alloc > 0); // Should be nothing to free | |
| 29 | 14 | buffer_replace_bytes(view, del_count, "\n", 1); | |
| 30 | 14 | return 1; | |
| 31 | } | ||
| 32 | |||
| 33 | 18 | string_insert_buf(&indent, 0, "\n", 1); // Prepend newline to indent | |
| 34 | 18 | size_t ins_count = indent.len; // Get length, before string_free() clears it | |
| 35 | 18 | buffer_replace_bytes(view, del_count, indent.buffer, ins_count); | |
| 36 | 18 | string_free(&indent); | |
| 37 | 18 | return ins_count; | |
| 38 | } | ||
| 39 | |||
| 40 | 12 | void new_line(View *view, bool above_cursor, NewlineIndentType indent_type) | |
| 41 | { | ||
| 42 | 12 | BlockIter *cursor = &view->cursor; | |
| 43 |
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12 | if (indent_type == NLI_COPY_INDENT) { |
| 44 | 4 | const LocalOptions *options = &view->buffer->options; | |
| 45 | 4 | StringView line = get_current_line(*cursor); | |
| 46 | 4 | size_t width = get_indent_width(line, options->tab_width); | |
| 47 | 4 | String indent_and_nl = make_indent(options, width); | |
| 48 | 4 | string_append_byte(&indent_and_nl, '\n'); | |
| 49 | |||
| 50 |
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4 | if (above_cursor) { |
| 51 | 2 | block_iter_bol(cursor); | |
| 52 | } else { | ||
| 53 | 2 | block_iter_eat_line(cursor); | |
| 54 | } | ||
| 55 | |||
| 56 | 4 | buffer_insert_bytes(view, indent_and_nl.buffer, indent_and_nl.len); | |
| 57 | 4 | block_iter_skip_bytes(cursor, indent_and_nl.len - 1); | |
| 58 | 4 | string_free(&indent_and_nl); | |
| 59 | 4 | return; | |
| 60 | } | ||
| 61 | |||
| 62 |
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8 | if (above_cursor && !block_iter_prev_line(cursor)) { |
| 63 | // The NLI_AUTO_INDENT and NLI_NO_INDENT types are handled | ||
| 64 | // by simulating a newline insertion (with or without an | ||
| 65 | // auto-indent). Inserting above the cursor when already | ||
| 66 | // on the first line is a special case, both because the | ||
| 67 | // positioning attempted by block_iter_prev_line() failed | ||
| 68 | // and because an auto-indent is never needed. Thus, we | ||
| 69 | // simply insert a newline at BOF/BOL instead. | ||
| 70 | 1 | block_iter_bof(cursor); | |
| 71 | 1 | buffer_insert_bytes(view, "\n", 1); | |
| 72 | 1 | return; | |
| 73 | } | ||
| 74 | |||
| 75 | 7 | BlockIter tmp = *cursor; | |
| 76 | 7 | bool auto_indent = (indent_type == NLI_AUTO_INDENT); | |
| 77 |
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7 | bool use_ref_line = auto_indent && block_iter_find_non_empty_line_bwd(&tmp); |
| 78 | 7 | StringView line = use_ref_line ? block_iter_get_line(&tmp) : strview(NULL); | |
| 79 | 7 | block_iter_eol(cursor); | |
| 80 | |||
| 81 | 7 | size_t ins_count = insert_nl_and_autoindent(view, line, 0); | |
| 82 | 7 | block_iter_skip_bytes(cursor, ins_count); | |
| 83 | } | ||
| 84 | |||
| 85 | // Go to beginning of whitespace (tabs and spaces) under cursor and | ||
| 86 | // return number of whitespace bytes surrounding cursor | ||
| 87 | 24 | static size_t goto_beginning_of_whitespace(BlockIter *cursor) | |
| 88 | { | ||
| 89 | 24 | BlockIter tmp = *cursor; | |
| 90 | 24 | return block_iter_skip_blanks_fwd(&tmp) + block_iter_skip_blanks_bwd(cursor); | |
| 91 | } | ||
| 92 | |||
| 93 | 25 | static void insert_nl(View *view) | |
| 94 | { | ||
| 95 | // Prepare deleted text (selection or whitespace around cursor) | ||
| 96 | 25 | size_t del_count = 0; | |
| 97 |
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25 | if (view->selection) { |
| 98 | 1 | del_count = prepare_selection(view); | |
| 99 | 1 | unselect(view); | |
| 100 | } else { | ||
| 101 | // Trim whitespace around cursor | ||
| 102 | 24 | del_count = goto_beginning_of_whitespace(&view->cursor); | |
| 103 | } | ||
| 104 | |||
| 105 | // Get reference line, for calculating auto-indent size (if applicable) | ||
| 106 | 25 | StringView line = STRING_VIEW_INIT; | |
| 107 |
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25 | if (view->buffer->options.auto_indent) { |
| 108 | 25 | BlockIter bi = view->cursor; | |
| 109 | 25 | size_t len = block_iter_bol(&bi); | |
| 110 | 25 | line = block_iter_get_line(&bi); | |
| 111 | 25 | line.length = len; // Current line will be split at cursor position | |
| 112 |
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25 | if (strview_isblank(line)) { |
| 113 | // This line is (or will become) whitespace only; find previous, | ||
| 114 | // non-whitespace line | ||
| 115 |
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5 | if (block_iter_prev_line(&bi) && block_iter_find_non_empty_line_bwd(&bi)) { |
| 116 | 5 | line = block_iter_get_line(&bi); | |
| 117 | } else { | ||
| 118 | ✗ | line.length = 0; | |
| 119 | } | ||
| 120 | } | ||
| 121 | } | ||
| 122 | |||
| 123 | 25 | begin_change(CHANGE_MERGE_NONE); | |
| 124 | 25 | size_t ins_count = insert_nl_and_autoindent(view, line, del_count); | |
| 125 | 25 | end_change(); | |
| 126 | 25 | block_iter_skip_bytes(&view->cursor, ins_count); // Move after inserted text | |
| 127 | 25 | } | |
| 128 | |||
| 129 | 1 | static int get_indent_of_matching_brace(const View *view) | |
| 130 | { | ||
| 131 | 1 | unsigned int tab_width = view->buffer->options.tab_width; | |
| 132 | 1 | BlockIter bi = view->cursor; | |
| 133 | 1 | int level = 0; | |
| 134 | |||
| 135 |
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4 | while (block_iter_prev_line(&bi)) { |
| 136 | 4 | StringView line = block_iter_get_line(&bi); | |
| 137 |
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4 | if (line_has_opening_brace(line)) { |
| 138 |
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1 | if (level++ == 0) { |
| 139 | 1 | return get_indent_width(line, tab_width); | |
| 140 | } | ||
| 141 | } | ||
| 142 |
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3 | if (line_has_closing_brace(line)) { |
| 143 | ✗ | level--; | |
| 144 | } | ||
| 145 | } | ||
| 146 | |||
| 147 | return -1; | ||
| 148 | } | ||
| 149 | |||
| 150 | 147 | void insert_ch(View *view, CodePoint ch) | |
| 151 | { | ||
| 152 |
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147 | if (ch == '\n') { |
| 153 | 25 | insert_nl(view); | |
| 154 | 25 | return; | |
| 155 | } | ||
| 156 | |||
| 157 | 122 | const Buffer *buffer = view->buffer; | |
| 158 | 122 | const LocalOptions *options = &buffer->options; | |
| 159 | 122 | char buf[8]; | |
| 160 | 122 | char *ins = buf; | |
| 161 | 122 | char *alloc = NULL; | |
| 162 | 122 | size_t del_count = 0; | |
| 163 | 122 | size_t ins_count = 0; | |
| 164 | |||
| 165 |
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122 | if (view->selection) { |
| 166 | // Prepare text to be deleted (selection) | ||
| 167 | ✗ | del_count = prepare_selection(view); | |
| 168 | ✗ | unselect(view); | |
| 169 |
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122 | } else if (options->overwrite) { |
| 170 | // Delete character under cursor unless we're at end of line | ||
| 171 | ✗ | BlockIter bi = view->cursor; | |
| 172 | ✗ | del_count = block_iter_is_eol(&bi) ? 0 : block_iter_next_column(&bi); | |
| 173 |
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122 | } else if (ch == '}' && options->auto_indent && options->brace_indent) { |
| 174 | 1 | StringView line = get_current_line(view->cursor); | |
| 175 |
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1 | if (strview_isblank(line)) { |
| 176 | 1 | int width = get_indent_of_matching_brace(view); | |
| 177 |
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1 | if (width >= 0) { |
| 178 | // Replace current (whitespace only) line with some indent + '}' | ||
| 179 | 1 | block_iter_bol(&view->cursor); | |
| 180 | 1 | del_count = line.length; | |
| 181 |
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1 | if (width) { |
| 182 | ✗ | String indent = make_indent(options, width); | |
| 183 | ✗ | BUG_ON(!indent.len); // `width > 0` never produces `indent.len == 0` | |
| 184 | ✗ | ins_count = indent.len; | |
| 185 | ✗ | ins = alloc = string_steal_cstring(&indent); | |
| 186 | // '}' will be replace the terminating NUL | ||
| 187 | } | ||
| 188 | } | ||
| 189 | } | ||
| 190 | } | ||
| 191 | |||
| 192 | // Prepare text to be inserted | ||
| 193 |
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122 | if (ch == '\t' && options->expand_tab) { |
| 194 | 12 | static_assert(sizeof(buf) >= INDENT_WIDTH_MAX); | |
| 195 | 12 | ins_count = options->indent_width; | |
| 196 | 12 | memset(ins, ' ', ins_count); | |
| 197 | } else { | ||
| 198 | 110 | static_assert(sizeof(buf) >= UTF8_MAX_SEQ_LEN); | |
| 199 | 110 | ins_count += u_set_char_raw(ins + ins_count, ch); | |
| 200 | } | ||
| 201 | |||
| 202 | // Make edit to Buffer (and record Change in undo history) | ||
| 203 | 122 | begin_change(del_count ? CHANGE_MERGE_NONE : CHANGE_MERGE_INSERT); | |
| 204 | 122 | buffer_replace_bytes(view, del_count, ins, ins_count); | |
| 205 | 122 | end_change(); | |
| 206 | 122 | free(alloc); | |
| 207 | |||
| 208 | // Move cursor after inserted text | ||
| 209 | 122 | block_iter_skip_bytes(&view->cursor, ins_count); | |
| 210 | } | ||
| 211 |