pretty-print: add helper for quickly outputting red/green cross/check marks

Compound constructors FTW!

src/shared/pretty-print.h

@@ -1,6 +1,9 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
+#include "glyph-util.h"
+#include "terminal-util.h"
+
 void print_separator(void);
 
 int file_url_from_path(const char *path, char **ret);
@@ -17,3 +20,23 @@ typedef enum CatFlags {
 
 int cat_files(const char *file, char **dropins, CatFlags flags);
 int conf_files_cat(const char *root, const char *name);
+
+#define RED_CROSS_MARK_MAX (STRLEN(ANSI_HIGHLIGHT_RED) + STRLEN("✗") + STRLEN(ANSI_NORMAL) + 1)
+#define GREEN_CHECK_MARK_MAX (STRLEN(ANSI_HIGHLIGHT_GREEN) + STRLEN("✓") + STRLEN(ANSI_NORMAL) + 1)
+
+static inline const char *red_cross_mark_internal(char buffer[static RED_CROSS_MARK_MAX]) {
+        assert(buffer);
+        assert_se(stpcpy(stpcpy(stpcpy(buffer, ansi_highlight_red()), special_glyph(SPECIAL_GLYPH_CROSS_MARK)), ansi_normal()) < buffer + RED_CROSS_MARK_MAX);
+        return buffer;
+}
+
+static inline const char *green_check_mark_internal(char buffer[static GREEN_CHECK_MARK_MAX]) {
+        assert(buffer);
+        assert_se(stpcpy(stpcpy(stpcpy(buffer, ansi_highlight_green()), special_glyph(SPECIAL_GLYPH_CHECK_MARK)), ansi_normal()) < buffer + GREEN_CHECK_MARK_MAX);
+        return buffer;
+}
+
+#define RED_CROSS_MARK() red_cross_mark_internal((char[RED_CROSS_MARK_MAX]) {})
+#define GREEN_CHECK_MARK() green_check_mark_internal((char[GREEN_CHECK_MARK_MAX]) {})
+
+#define COLOR_MARK_BOOL(b) ((b) ? GREEN_CHECK_MARK() : RED_CROSS_MARK())