Method SetToDiffUtils

Src/CompareOptions.cpp:132–179

* @brief Set options to diffutils. * Diffutils uses options from global variables we must set. Those variables * aren't most logically named, and most are just int's, with some magic * values and meanings, with fancy combinations? So not easy to setup. This * function maps our easier to handle compare options to diffutils globals. */

 * function maps our easier to handle compare options to diffutils globals.
 */
void DiffutilsOptions::SetToDiffUtils()
{
	switch (m_outputStyle)
	{
	case DIFF_OUTPUT_NORMAL:
		output_style = OUTPUT_NORMAL;
		break;
	case DIFF_OUTPUT_CONTEXT:
		output_style = OUTPUT_CONTEXT;
		break;
	case DIFF_OUTPUT_UNIFIED:
		output_style = OUTPUT_UNIFIED;
		break;
	case DIFF_OUTPUT_HTML:
		output_style = OUTPUT_HTML;
		break;
	default:
		throw "Unknown output style!";
		break;
	}

	context = m_contextLines;

	ignore_space_change_flag = (m_ignoreWhitespace == WHITESPACE_IGNORE_CHANGE);
	ignore_all_space_flag = (m_ignoreWhitespace == WHITESPACE_IGNORE_ALL);
	ignore_blank_lines_flag = m_bIgnoreBlankLines;
	ignore_case_flag = m_bIgnoreCase;
	ignore_numbers_flag = m_bIgnoreNumbers;
	ignore_eol_diff = m_bIgnoreEOLDifference;
	ignore_some_changes = (m_ignoreWhitespace != WHITESPACE_COMPARE_ALL || m_bIgnoreCase ||	m_bIgnoreBlankLines || m_bIgnoreEOLDifference);
	length_varies = (m_ignoreWhitespace != WHITESPACE_COMPARE_ALL);

	// We have no interest changing these values, hard-code them.
	always_text_flag = 0; // diffutils needs to detect binary files
	horizon_lines = 0;
	heuristic = 1;
	recursive = 0;

	no_diff_means_no_output = 0;
	no_details_flag = 0;
	line_end_char = '\n';
	tab_align_flag = 0;
	tab_expand_flag = 0;
	paginate_flag = 0;
	switch_string = NULL;
	file_label[0] = NULL;
	file_label[1] = NULL;
}

/**
 * @brief Gets options to DIFFOPTIONS structure.