diff options
Diffstat (limited to 'buffer.c')
| -rw-r--r-- | buffer.c | 32 |
1 files changed, 30 insertions, 2 deletions
@@ -177,6 +177,33 @@ static inline Settings const *buffer_settings(TextBuffer *buffer) { return &buffer->ted->settings; } +// what programming language is this? +Language buffer_language(TextBuffer *buffer) { + Settings const *settings = buffer_settings(buffer); + char const *filename = buffer->filename; + if (!filename) + return LANG_NONE; + size_t filename_len = strlen(filename); + + for (u16 l = 0; l < LANG_COUNT; ++l) { + char const *extensions = settings->language_extensions[l]; + if (extensions) { + // extensions is a string with commas separating each extension. + size_t len = 0; + for (char const *p = extensions; *p; p += len) { + if (*p == ',') ++p; // move past comma + len = strcspn(p, ","); + if (filename_len >= len && strncmp(&filename[filename_len - len], p, len) == 0) { + // found a match! + return (Language)l; + } + } + } + } + // no extensions matched + return LANG_NONE; +} + // NOTE: this string will be invalidated when the line is edited!!! // only use it briefly!! static String32 buffer_get_line(TextBuffer *buffer, u32 line_number) { @@ -1976,11 +2003,12 @@ void buffer_render(TextBuffer *buffer, Rect r) { text_state.y -= (float)(buffer->scroll_y - start_line) * char_height; SyntaxState syntax_state = {0}; + Language language = buffer_language(buffer); // dynamic array of character types, to be filled by syntax_highlight SyntaxCharType *char_types = NULL; for (u32 line_idx = 0; line_idx < start_line; ++line_idx) { Line *line = &lines[line_idx]; - syntax_highlight(&syntax_state, buffer->language, line->str, line->len, NULL); + syntax_highlight(&syntax_state, language, line->str, line->len, NULL); } for (u32 line_idx = start_line; line_idx < nlines; ++line_idx) { @@ -1988,7 +2016,7 @@ void buffer_render(TextBuffer *buffer, Rect r) { if (arr_len(char_types) < line->len) { arr_set_len(char_types, line->len); } - syntax_highlight(&syntax_state, buffer->language, line->str, line->len, char_types); + syntax_highlight(&syntax_state, language, line->str, line->len, char_types); for (u32 i = 0; i < line->len; ++i) { char32_t c = line->str[i]; SyntaxCharType type = char_types[i]; |