Merge pull request #16556 from keszybz/test-terminal-colors

Test terminal colors

src/basic/terminal-util.h

@@ -11,21 +11,41 @@
 #include "time-util.h"
 
 /* Regular colors */
+#define ANSI_BLACK   "\x1B[0;30m" /* Some type of grey usually. */
 #define ANSI_RED     "\x1B[0;31m"
 #define ANSI_GREEN   "\x1B[0;32m"
 #define ANSI_YELLOW  "\x1B[0;33m"
 #define ANSI_BLUE    "\x1B[0;34m"
 #define ANSI_MAGENTA "\x1B[0;35m"
+#define ANSI_CYAN    "\x1B[0;36m"
+#define ANSI_WHITE   "\x1B[0;37m" /* This is actually rendered as light grey, legible even on a white
+                                   * background. See ANSI_HIGHLIGHT_WHITE for real white. */
+
+#define ANSI_BRIGHT_BLACK   "\x1B[0;90m"
+#define ANSI_BRIGHT_RED     "\x1B[0;91m"
+#define ANSI_BRIGHT_GREEN   "\x1B[0;92m"
+#define ANSI_BRIGHT_YELLOW  "\x1B[0;93m"
+#define ANSI_BRIGHT_BLUE    "\x1B[0;94m"
+#define ANSI_BRIGHT_MAGENTA "\x1B[0;95m"
+#define ANSI_BRIGHT_CYAN    "\x1B[0;96m"
+#define ANSI_BRIGHT_WHITE   "\x1B[0;97m"
+
 #define ANSI_GREY    "\x1B[0;38;5;245m"
 
 /* Bold/highlighted */
+#define ANSI_HIGHLIGHT_BLACK    "\x1B[0;1;30m"
 #define ANSI_HIGHLIGHT_RED      "\x1B[0;1;31m"
 #define ANSI_HIGHLIGHT_GREEN    "\x1B[0;1;32m"
-#define ANSI_HIGHLIGHT_YELLOW            "\x1B[0;1;38;5;185m"
+#define _ANSI_HIGHLIGHT_YELLOW  "\x1B[0;1;33m" /* This yellow is currently not displayed well by some terminals */
 #define ANSI_HIGHLIGHT_BLUE     "\x1B[0;1;34m"
 #define ANSI_HIGHLIGHT_MAGENTA  "\x1B[0;1;35m"
-#define ANSI_HIGHLIGHT_GREY              "\x1B[0;1;38;5;245m"
+#define ANSI_HIGHLIGHT_CYAN     "\x1B[0;1;36m"
+#define ANSI_HIGHLIGHT_WHITE    "\x1B[0;1;37m"
 #define ANSI_HIGHLIGHT_YELLOW4  "\x1B[0;1;38;5;100m"
+#define ANSI_HIGHLIGHT_KHAKI3   "\x1B[0;1;38;5;185m"
+#define ANSI_HIGHLIGHT_GREY     "\x1B[0;1;38;5;245m"
+
+#define ANSI_HIGHLIGHT_YELLOW   ANSI_HIGHLIGHT_KHAKI3 /* Replacement yellow that is more legible */
 
 /* Underlined */
 #define ANSI_GREY_UNDERLINE              "\x1B[0;4;38;5;245m"
@@ -124,18 +144,38 @@ bool dev_console_colors_enabled(void);
 
 DEFINE_ANSI_FUNC(normal,            NORMAL);
 DEFINE_ANSI_FUNC(highlight,         HIGHLIGHT);
+DEFINE_ANSI_FUNC(black,             BLACK);
 DEFINE_ANSI_FUNC(red,               RED);
 DEFINE_ANSI_FUNC(green,             GREEN);
 DEFINE_ANSI_FUNC(yellow,            YELLOW);
 DEFINE_ANSI_FUNC(blue,              BLUE);
 DEFINE_ANSI_FUNC(magenta,           MAGENTA);
+DEFINE_ANSI_FUNC(cyan,              CYAN);
+DEFINE_ANSI_FUNC(white,             WHITE);
 DEFINE_ANSI_FUNC(grey,              GREY);
+
+DEFINE_ANSI_FUNC(bright_black,      BRIGHT_BLACK);
+DEFINE_ANSI_FUNC(bright_red,        BRIGHT_RED);
+DEFINE_ANSI_FUNC(bright_green,      BRIGHT_GREEN);
+DEFINE_ANSI_FUNC(bright_yellow,     BRIGHT_YELLOW);
+DEFINE_ANSI_FUNC(bright_blue,       BRIGHT_BLUE);
+DEFINE_ANSI_FUNC(bright_magenta,    BRIGHT_MAGENTA);
+DEFINE_ANSI_FUNC(bright_cyan,       BRIGHT_CYAN);
+DEFINE_ANSI_FUNC(bright_white,      BRIGHT_WHITE);
+
+DEFINE_ANSI_FUNC(highlight_black,   HIGHLIGHT_BLACK);
 DEFINE_ANSI_FUNC(highlight_red,     HIGHLIGHT_RED);
 DEFINE_ANSI_FUNC(highlight_green,   HIGHLIGHT_GREEN);
 DEFINE_ANSI_FUNC(highlight_yellow,  HIGHLIGHT_YELLOW);
 DEFINE_ANSI_FUNC(highlight_blue,    HIGHLIGHT_BLUE);
 DEFINE_ANSI_FUNC(highlight_magenta, HIGHLIGHT_MAGENTA);
+DEFINE_ANSI_FUNC(highlight_cyan,    HIGHLIGHT_CYAN);
 DEFINE_ANSI_FUNC(highlight_grey,    HIGHLIGHT_GREY);
+DEFINE_ANSI_FUNC(highlight_white,   HIGHLIGHT_WHITE);
+
+static inline const char* _ansi_highlight_yellow(void) {
+        return colors_enabled() ? _ANSI_HIGHLIGHT_YELLOW : "";
+}
 
 DEFINE_ANSI_FUNC_UNDERLINE(underline,                   UNDERLINE, NORMAL);
 DEFINE_ANSI_FUNC_UNDERLINE(highlight_underline,         HIGHLIGHT_UNDERLINE, HIGHLIGHT);

src/test/test-terminal-util.c

@@ -15,6 +15,12 @@
 #include "tmpfile-util.h"
 #include "util.h"
 
+#define LOREM_IPSUM "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor " \
+        "incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation " \
+        "ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit " \
+        "in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat " \
+        "non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
+
 static void test_default_term_for_tty(void) {
         log_info("/* %s */", __func__);
 
@@ -75,36 +81,76 @@ static void test_getttyname_malloc(void) {
         assert_se(PATH_IN_SET(ttyname, "ptmx", "pts/ptmx"));
 }
 
-static void test_one_color(const char *name, const char *color) {
-        printf("<%s%s%s>\n", color, name, ansi_normal());
-}
+typedef struct {
+        const char *name;
+        const char* (*func)(void);
+} Color;
+
+static const Color colors[] = {
+        { "normal", ansi_normal },
+        { "highlight", ansi_highlight },
+        { "black", ansi_black },
+        { "red", ansi_red },
+        { "green", ansi_green },
+        { "yellow", ansi_yellow },
+        { "blue", ansi_blue },
+        { "magenta", ansi_magenta },
+        { "cyan", ansi_cyan },
+        { "white", ansi_white },
+        { "grey", ansi_grey },
+
+        { "bright-black", ansi_bright_black },
+        { "bright-red", ansi_bright_red },
+        { "bright-green", ansi_bright_green },
+        { "bright-yellow", ansi_bright_yellow },
+        { "bright-blue", ansi_bright_blue },
+        { "bright-magenta", ansi_bright_magenta },
+        { "bright-cyan", ansi_bright_cyan },
+        { "bright-white", ansi_bright_white },
+
+        { "highlight-black", ansi_highlight_black },
+        { "highlight-red", ansi_highlight_red },
+        { "highlight-green", ansi_highlight_green },
+        { "highlight-yellow (original)", _ansi_highlight_yellow },
+        { "highlight-yellow (replacement)", ansi_highlight_yellow },
+        { "highlight-blue", ansi_highlight_blue },
+        { "highlight-magenta", ansi_highlight_magenta },
+        { "highlight-cyan", ansi_highlight_cyan },
+        { "highlight-white", ansi_highlight_white },
+        { "highlight-grey", ansi_highlight_grey },
+
+        { "underline", ansi_underline },
+        { "highlight-underline", ansi_highlight_underline },
+        { "highlight-red-underline", ansi_highlight_red_underline },
+        { "highlight-green-underline", ansi_highlight_green_underline },
+        { "highlight-yellow-underline", ansi_highlight_yellow_underline },
+        { "highlight-blue-underline", ansi_highlight_blue_underline },
+        { "highlight-magenta-underline", ansi_highlight_magenta_underline },
+        { "highlight-grey-underline", ansi_highlight_grey_underline },
+};
 
 static void test_colors(void) {
         log_info("/* %s */", __func__);
 
-        test_one_color("normal", ansi_normal());
-        test_one_color("highlight", ansi_highlight());
-        test_one_color("red", ansi_red());
-        test_one_color("green", ansi_green());
-        test_one_color("yellow", ansi_yellow());
-        test_one_color("blue", ansi_blue());
-        test_one_color("magenta", ansi_magenta());
-        test_one_color("grey", ansi_grey());
-        test_one_color("highlight-red", ansi_highlight_red());
-        test_one_color("highlight-green", ansi_highlight_green());
-        test_one_color("highlight-yellow", ansi_highlight_yellow());
-        test_one_color("highlight-blue", ansi_highlight_blue());
-        test_one_color("highlight-magenta", ansi_highlight_magenta());
-        test_one_color("highlight-grey", ansi_highlight_grey());
+        for (size_t i = 0; i < ELEMENTSOF(colors); i++)
+                printf("<%s%s%s>\n", colors[i].func(), colors[i].name, ansi_normal());
+}
 
-        test_one_color("underline", ansi_underline());
-        test_one_color("highlight-underline", ansi_highlight_underline());
-        test_one_color("highlight-red-underline", ansi_highlight_red_underline());
-        test_one_color("highlight-green-underline", ansi_highlight_green_underline());
-        test_one_color("highlight-yellow-underline", ansi_highlight_yellow_underline());
-        test_one_color("highlight-blue-underline", ansi_highlight_blue_underline());
-        test_one_color("highlight-magenta-underline", ansi_highlight_magenta_underline());
-        test_one_color("highlight-grey-underline", ansi_highlight_grey_underline());
+static void test_text(void) {
+        log_info("/* %s */", __func__);
+
+        for (size_t i = 0; !streq(colors[i].name, "underline"); i++) {
+                bool blwh = strstr(colors[i].name, "black")
+                        || strstr(colors[i].name, "white");
+
+                printf("\n"
+                       "Testing color %s%s\n%s%s%s\n",
+                       colors[i].name,
+                       blwh ? "" : ", this text should be readable",
+                       colors[i].func(),
+                       LOREM_IPSUM,
+                       ansi_normal());
+        }
 }
 
 int main(int argc, char *argv[]) {
@@ -114,6 +160,7 @@ int main(int argc, char *argv[]) {
         test_read_one_char();
         test_getttyname_malloc();
         test_colors();
+        test_text();
 
         return 0;
 }