Function yaml_doc_init

src/cli/config_yaml_edit.c:1178–1223

}

static int yaml_doc_init(yaml_doc_t *doc, const char *data, size_t len) {
    memset(doc, 0, sizeof(*doc));
    doc->data = data;
    doc->len = len;
    if (yaml_build_lines(doc) != 0) {
        return YAML_ERROR;
    }
    /* A UTF-8 BOM is a prologue, not content (#1656): Windows-authored
     * configs routinely carry one (PowerShell 5.1 Set-Content -Encoding UTF8
     * writes it), and treating its bytes as the first key made every edit op
     * fail content-independently. Skip it for structure; edits splice ranges
     * at line offsets, so the BOM survives every write byte-for-byte. */
    if (doc->line_count > 0U && doc->len >= YAML_DOC_MARKER_LEN &&
        (unsigned char)data[0] == 0xEFU && (unsigned char)data[1] == 0xBBU &&
        (unsigned char)data[2] == 0xBFU) {
        yaml_line_t *first = &doc->lines[0];
        if (first->start == 0U && !first->blank) {
            first->start = YAML_DOC_MARKER_LEN;
            if (first->start + first->indent >= first->text_end) {
                first->blank = true;
            }
        }
    }
    if (yaml_mark_dquote_continuations(doc) != 0) {
        yaml_doc_free(doc);
        return YAML_ERROR;
    }
    for (size_t i = 0; i < doc->line_count; i++) {
        const yaml_line_t *line = &doc->lines[i];
        if (line->indent == 0U && !line->blank && !line->comment && !line->dquote_cont) {
            size_t len_no_eol = line->text_end - line->start;
            if ((len_no_eol == YAML_DOC_MARKER_LEN &&
                 memcmp(doc->data + line->start, "---", YAML_DOC_MARKER_LEN) == 0) ||
                (len_no_eol == YAML_DOC_MARKER_LEN &&
                 memcmp(doc->data + line->start, "...", YAML_DOC_MARKER_LEN) == 0)) {
                yaml_doc_free(doc);
                return YAML_ERROR;
            }
        }
    }
    if (yaml_validate_root_mapping(doc) != 0) {
        yaml_doc_free(doc);
        return YAML_ERROR;
    }
    return 0;
}

static size_t yaml_skip_spaces(const char *data, size_t pos, size_t end) {
    while (pos < end && data[pos] == ' ') {