terminal: abstract terminal color handling

Instead of making msg.c an ifdef hell for unix vs. windows code, move
the code to separate functions defined in terminal-unix.c/terminal-
win.c.

Drop the code that selects random colors for --msgmodule prefixes.

1 files changed, 21 insertions, 1 deletions

diff --git a/osdep/terminal-unix.c b/osdep/terminal-unix.c
index 050b97b9d1..f61cb5e367 100644
--- a/osdep/terminal-unix.c
+++ b/osdep/terminal-unix.c
@@ -227,7 +227,7 @@ static void termcap_add_extra_f_keys(void) {
 
 #endif
 
-int load_termcap(char *termtype){
+static int load_termcap(char *termtype){
 #if HAVE_TERMINFO || HAVE_TERMCAP
 
 #if HAVE_TERMINFO
@@ -578,3 +578,23 @@ void getch2_disable(void){
 
     getch2_enabled = 0;
 }
+
+bool terminal_in_background(void)
+{
+    return isatty(2) && tcgetpgrp(2) != getpgrp();
+}
+
+void terminal_set_foreground_color(FILE *stream, int c)
+{
+    if (c == -1) {
+        fprintf(stream, "\033[0m");
+    } else {
+        fprintf(stream, "\033[%d;3%dm", c >> 3, c & 7);
+    }
+}
+
+int terminal_init(void)
+{
+    load_termcap(NULL);
+    return 0;
+}