spa: add a header for ANSI color sequences

Makes the code more readable and guarantees we use the same sequences for the
same colors everywhere.

spa/include/spa/utils/ansi.h

@@ -0,0 +1,112 @@
+/* Simple Plugin API
+ *
+ * Copyright © 2021 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SPA_UTILS_ANSI_H
+#define SPA_UTILS_ANSI_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** \defgroup spa_utils SPA Utils
+ */
+
+/**
+ * \addtogroup spa_utils
+ * \{
+ */
+
+/**
+ * Ansi escape sequences. Note that the color names are approximate only and
+ * the actual rendering of the color depends on the terminal.
+ */
+
+#define SPA_ANSI_RESET		"\x1B[0m"
+#define SPA_ANSI_BOLD		"\x1B[1m"
+#define SPA_ANSI_ITALIC		"\x1B[3m"
+#define SPA_ANSI_UNDERLINE	"\x1B[4m"
+
+#define SPA_ANSI_BLACK		"\x1B[0;30m"
+#define SPA_ANSI_RED		"\x1B[0;31m"
+#define SPA_ANSI_GREEN		"\x1B[0;32m"
+#define SPA_ANSI_YELLOW		"\x1B[0;33m"
+#define SPA_ANSI_BLUE		"\x1B[0;34m"
+#define SPA_ANSI_MAGENTA	"\x1B[0;35m"
+#define SPA_ANSI_CYAN		"\x1B[0;36m"
+#define SPA_ANSI_WHITE		"\x1B[0;37m"
+#define SPA_ANSI_BRIGHT_BLACK	"\x1B[90m"
+#define SPA_ANSI_BRIGHT_RED	"\x1B[91m"
+#define SPA_ANSI_BRIGHT_GREEN	"\x1B[92m"
+#define SPA_ANSI_BRIGHT_YELLOW	"\x1B[93m"
+#define SPA_ANSI_BRIGHT_BLUE	"\x1B[94m"
+#define SPA_ANSI_BRIGHT_MAGENTA	"\x1B[95m"
+#define SPA_ANSI_BRIGHT_CYAN	"\x1B[96m"
+#define SPA_ANSI_BRIGHT_WHITE	"\x1B[97m"
+
+/* Shortcut because it's a common use-case and easier than combining both */
+#define SPA_ANSI_BOLD_BLACK	"\x1B[1;30m"
+#define SPA_ANSI_BOLD_RED	"\x1B[1;31m"
+#define SPA_ANSI_BOLD_GREEN	"\x1B[1;32m"
+#define SPA_ANSI_BOLD_YELLOW	"\x1B[1;33m"
+#define SPA_ANSI_BOLD_BLUE	"\x1B[1;34m"
+#define SPA_ANSI_BOLD_MAGENTA	"\x1B[1;35m"
+#define SPA_ANSI_BOLD_CYAN	"\x1B[1;36m"
+#define SPA_ANSI_BOLD_WHITE	"\x1B[1;37m"
+
+#define SPA_ANSI_DARK_BLACK	"\x1B[2;30m"
+#define SPA_ANSI_DARK_RED	"\x1B[2;31m"
+#define SPA_ANSI_DARK_GREEN	"\x1B[2;32m"
+#define SPA_ANSI_DARK_YELLOW	"\x1B[2;33m"
+#define SPA_ANSI_DARK_BLUE	"\x1B[2;34m"
+#define SPA_ANSI_DARK_MAGENTA	"\x1B[2;35m"
+#define SPA_ANSI_DARK_CYAN	"\x1B[2;36m"
+#define SPA_ANSI_DARK_WHITE	"\x1B[2;37m"
+
+/* Background colors */
+#define SPA_ANSI_BG_BLACK		"\x1B[0;40m"
+#define SPA_ANSI_BG_RED			"\x1B[0;41m"
+#define SPA_ANSI_BG_GREEN		"\x1B[0;42m"
+#define SPA_ANSI_BG_YELLOW		"\x1B[0;43m"
+#define SPA_ANSI_BG_BLUE		"\x1B[0;44m"
+#define SPA_ANSI_BG_MAGENTA		"\x1B[0;45m"
+#define SPA_ANSI_BG_CYAN		"\x1B[0;46m"
+#define SPA_ANSI_BG_WHITE		"\x1B[0;47m"
+#define SPA_ANSI_BG_BRIGHT_BLACK	"\x1B[100m"
+#define SPA_ANSI_BG_BRIGHT_RED		"\x1B[101m"
+#define SPA_ANSI_BG_BRIGHT_GREEN	"\x1B[102m"
+#define SPA_ANSI_BG_BRIGHT_YELLOW	"\x1B[103m"
+#define SPA_ANSI_BG_BRIGHT_BLUE		"\x1B[104m"
+#define SPA_ANSI_BG_BRIGHT_MAGENTA	"\x1B[105m"
+#define SPA_ANSI_BG_BRIGHT_CYAN		"\x1B[106m"
+#define SPA_ANSI_BG_BRIGHT_WHITE	"\x1B[107m"
+
+/**
+ * \}
+ */
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* SPA_UTILS_ANSI_H */