| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #include <stdbool.h> | ||
| 2 | #include <stdlib.h> | ||
| 3 | #include <string.h> | ||
| 4 | #include "wrap.h" | ||
| 5 | #include "buffer.h" | ||
| 6 | #include "indent.h" | ||
| 7 | #include "misc.h" | ||
| 8 | #include "selection.h" | ||
| 9 | #include "util/string-view.h" | ||
| 10 | #include "util/string.h" | ||
| 11 | #include "util/unicode.h" | ||
| 12 | #include "util/utf8.h" | ||
| 13 | |||
| 14 | typedef struct { | ||
| 15 | String buf; | ||
| 16 | char *indent; | ||
| 17 | size_t indent_len; | ||
| 18 | size_t indent_width; | ||
| 19 | size_t cur_width; | ||
| 20 | size_t text_width; | ||
| 21 | } ParagraphFormatter; | ||
| 22 | |||
| 23 | ✗ | static void add_word(ParagraphFormatter *pf, const char *word, size_t len) | |
| 24 | { | ||
| 25 | ✗ | size_t i = 0; | |
| 26 | ✗ | size_t word_width = 0; | |
| 27 | ✗ | while (i < len) { | |
| 28 | ✗ | word_width += u_char_width(u_get_char(word, len, &i)); | |
| 29 | } | ||
| 30 | |||
| 31 | ✗ | if (pf->cur_width && pf->cur_width + 1 + word_width > pf->text_width) { | |
| 32 | ✗ | string_append_byte(&pf->buf, '\n'); | |
| 33 | ✗ | pf->cur_width = 0; | |
| 34 | } | ||
| 35 | |||
| 36 | ✗ | if (pf->cur_width == 0) { | |
| 37 | ✗ | if (pf->indent_len) { | |
| 38 | ✗ | string_append_buf(&pf->buf, pf->indent, pf->indent_len); | |
| 39 | } | ||
| 40 | ✗ | pf->cur_width = pf->indent_width; | |
| 41 | } else { | ||
| 42 | ✗ | string_append_byte(&pf->buf, ' '); | |
| 43 | ✗ | pf->cur_width++; | |
| 44 | } | ||
| 45 | |||
| 46 | ✗ | string_append_buf(&pf->buf, word, len); | |
| 47 | ✗ | pf->cur_width += word_width; | |
| 48 | ✗ | } | |
| 49 | |||
| 50 | ✗ | static bool is_long_comment_delim(const StringView *sv) | |
| 51 | { | ||
| 52 | // TODO: make this configurable | ||
| 53 | ✗ | return strview_equal_cstring(sv, "/*") || strview_equal_cstring(sv, "*/"); | |
| 54 | } | ||
| 55 | |||
| 56 | ✗ | static bool is_paragraph_separator(const StringView *line) | |
| 57 | { | ||
| 58 | ✗ | StringView trimmed = *line; | |
| 59 | ✗ | strview_trim(&trimmed); | |
| 60 | ✗ | return (trimmed.length == 0) || is_long_comment_delim(&trimmed); | |
| 61 | } | ||
| 62 | |||
| 63 | ✗ | static bool in_paragraph ( | |
| 64 | const StringView *line, | ||
| 65 | size_t para_indent_width, | ||
| 66 | unsigned int tab_width | ||
| 67 | ) { | ||
| 68 | ✗ | size_t w = get_indent_width(line, tab_width); | |
| 69 | ✗ | return (w == para_indent_width) && !is_paragraph_separator(line); | |
| 70 | } | ||
| 71 | |||
| 72 | ✗ | static size_t paragraph_size(View *view) | |
| 73 | { | ||
| 74 | ✗ | BlockIter bi = view->cursor; | |
| 75 | ✗ | block_iter_bol(&bi); | |
| 76 | ✗ | StringView line = block_iter_get_line(&bi); | |
| 77 | ✗ | if (is_paragraph_separator(&line)) { | |
| 78 | // Not in paragraph | ||
| 79 | return 0; | ||
| 80 | } | ||
| 81 | |||
| 82 | ✗ | unsigned int tab_width = view->buffer->options.tab_width; | |
| 83 | ✗ | size_t para_indent_width = get_indent_width(&line, tab_width); | |
| 84 | |||
| 85 | // Go to beginning of paragraph | ||
| 86 | ✗ | while (block_iter_prev_line(&bi)) { | |
| 87 | ✗ | line = block_iter_get_line(&bi); | |
| 88 | ✗ | if (!in_paragraph(&line, para_indent_width, tab_width)) { | |
| 89 | ✗ | block_iter_eat_line(&bi); | |
| 90 | ✗ | break; | |
| 91 | } | ||
| 92 | } | ||
| 93 | ✗ | view->cursor = bi; | |
| 94 | |||
| 95 | // Get size of paragraph | ||
| 96 | ✗ | size_t size = 0; | |
| 97 | ✗ | do { | |
| 98 | ✗ | size_t bytes = block_iter_eat_line(&bi); | |
| 99 | ✗ | if (!bytes) { | |
| 100 | break; | ||
| 101 | } | ||
| 102 | ✗ | size += bytes; | |
| 103 | ✗ | line = block_iter_get_line(&bi); | |
| 104 | ✗ | } while (in_paragraph(&line, para_indent_width, tab_width)); | |
| 105 | return size; | ||
| 106 | } | ||
| 107 | |||
| 108 | ✗ | void wrap_paragraph(View *view, size_t text_width) | |
| 109 | { | ||
| 110 | ✗ | size_t len; | |
| 111 | ✗ | if (view->selection) { | |
| 112 | ✗ | view->selection = SELECT_LINES; | |
| 113 | ✗ | len = prepare_selection(view); | |
| 114 | } else { | ||
| 115 | ✗ | len = paragraph_size(view); | |
| 116 | } | ||
| 117 | ✗ | if (!len) { | |
| 118 | ✗ | return; | |
| 119 | } | ||
| 120 | |||
| 121 | ✗ | const LocalOptions *options = &view->buffer->options; | |
| 122 | ✗ | char *sel = block_iter_get_bytes(&view->cursor, len); | |
| 123 | ✗ | StringView sv = string_view(sel, len); | |
| 124 | ✗ | size_t indent_width = get_indent_width(&sv, options->tab_width); | |
| 125 | ✗ | char *indent = make_indent(options, indent_width); | |
| 126 | |||
| 127 | ✗ | ParagraphFormatter pf = { | |
| 128 | .buf = STRING_INIT, | ||
| 129 | .indent = indent, | ||
| 130 | ✗ | .indent_len = indent ? strlen(indent) : 0, | |
| 131 | .indent_width = indent_width, | ||
| 132 | .cur_width = 0, | ||
| 133 | .text_width = text_width | ||
| 134 | }; | ||
| 135 | |||
| 136 | ✗ | for (size_t i = 0; true; ) { | |
| 137 | ✗ | while (i < len) { | |
| 138 | ✗ | size_t tmp = i; | |
| 139 | ✗ | if (!u_is_breakable_whitespace(u_get_char(sel, len, &tmp))) { | |
| 140 | break; | ||
| 141 | } | ||
| 142 | ✗ | i = tmp; | |
| 143 | } | ||
| 144 | ✗ | if (i == len) { | |
| 145 | break; | ||
| 146 | } | ||
| 147 | |||
| 148 | size_t start = i; | ||
| 149 | ✗ | while (i < len) { | |
| 150 | ✗ | size_t tmp = i; | |
| 151 | ✗ | if (u_is_breakable_whitespace(u_get_char(sel, len, &tmp))) { | |
| 152 | break; | ||
| 153 | } | ||
| 154 | ✗ | i = tmp; | |
| 155 | } | ||
| 156 | |||
| 157 | ✗ | add_word(&pf, sel + start, i - start); | |
| 158 | } | ||
| 159 | |||
| 160 | ✗ | if (pf.buf.len) { | |
| 161 | ✗ | string_append_byte(&pf.buf, '\n'); | |
| 162 | } | ||
| 163 | ✗ | buffer_replace_bytes(view, len, pf.buf.buffer, pf.buf.len); | |
| 164 | ✗ | if (pf.buf.len) { | |
| 165 | ✗ | block_iter_skip_bytes(&view->cursor, pf.buf.len - 1); | |
| 166 | } | ||
| 167 | |||
| 168 | ✗ | string_free(&pf.buf); | |
| 169 | ✗ | free(pf.indent); | |
| 170 | ✗ | free(sel); | |
| 171 | ✗ | unselect(view); | |
| 172 | } | ||
| 173 |