docs: move source-code-management.txt to README

[thirdparty/util-linux.git] / lib / color-names.c

#include "c.h"
#include "color-names.h"

struct ul_color_name {
	const char *name;
	const char *seq;
};

/*
 * qsort/bsearch buddy
 */
static int cmp_color_name(const void *a0, const void *b0)
{
	struct ul_color_name	*a = (struct ul_color_name *) a0,
				*b = (struct ul_color_name *) b0;
	return strcmp(a->name, b->name);
}

/*
 * Maintains human readable color names
 */
const char *color_sequence_from_colorname(const char *str)
{
	static const struct ul_color_name basic_schemes[] = {
		{ "black",	UL_COLOR_BLACK           },
		{ "blink",      UL_COLOR_BLINK           },
		{ "blue",	UL_COLOR_BLUE            },
		{ "bold",       UL_COLOR_BOLD		 },
		{ "brown",	UL_COLOR_BROWN           },
		{ "cyan",	UL_COLOR_CYAN            },
		{ "darkgray",	UL_COLOR_DARK_GRAY       },
		{ "gray",	UL_COLOR_GRAY            },
		{ "green",	UL_COLOR_GREEN           },
		{ "halfbright", UL_COLOR_HALFBRIGHT	 },
		{ "lightblue",	UL_COLOR_BOLD_BLUE       },
		{ "lightcyan",	UL_COLOR_BOLD_CYAN       },
		{ "lightgray,",	UL_COLOR_GRAY            },
		{ "lightgreen", UL_COLOR_BOLD_GREEN      },
		{ "lightmagenta", UL_COLOR_BOLD_MAGENTA  },
		{ "lightred",	UL_COLOR_BOLD_RED        },
		{ "magenta",	UL_COLOR_MAGENTA         },
		{ "red",	UL_COLOR_RED             },
		{ "reset",      UL_COLOR_RESET,          },
		{ "reverse",    UL_COLOR_REVERSE         },
		{ "yellow",	UL_COLOR_BOLD_YELLOW     },
	};
	struct ul_color_name key = { .name = (char *) str }, *res;

	if (!str)
		return NULL;

	res = bsearch(&key, basic_schemes, ARRAY_SIZE(basic_schemes),
				sizeof(struct ul_color_name),
				cmp_color_name);
	return res ? res->seq : NULL;
}