stty: reduce #ifdef forest

diff --git a/coreutils/stty.c b/coreutils/stty.c
index 641bfb8156aecb508c516be30cc437eee2cba7a0..e60c4f5892c03f838493a0db1006dcc3446ecd59 100644 (file)
--- a/coreutils/stty.c
+++ b/coreutils/stty.c
@@ -765,6 +765,40 @@ end_option:
        return EXIT_SUCCESS;
 }
 
+/* Save set_mode from #ifdef forest plague */
+#ifndef ONLCR
+#define ONLCR 0
+#endif
+#ifndef OCRNL
+#define OCRNL 0
+#endif
+#ifndef ONLRET
+#define ONLRET 0
+#endif
+#ifndef XCASE
+#define XCASE 0
+#endif
+#ifndef IXANY
+#define IXANY 0
+#endif
+#ifndef TABDLY
+#define TABDLY 0
+#endif
+#ifndef OXTABS
+#define OXTABS 0
+#endif
+#ifndef IUCLC
+#define IUCLC 0
+#endif
+#ifndef OLCUC
+#define OLCUC 0
+#endif
+#ifndef ECHOCTL
+#define ECHOCTL 0
+#endif
+#ifndef ECHOKE
+#define ECHOKE 0
+#endif
 
 static void
 set_mode(const struct mode_info *info, int reversed, struct termios *mode)
@@ -790,23 +824,10 @@ set_mode(const struct mode_info *info, int reversed, struct termios *mode)
                } else if (info->name == stty_nl) {
                        if (reversed) {
                                mode->c_iflag = (mode->c_iflag | ICRNL) & ~INLCR & ~IGNCR;
-                               mode->c_oflag = (mode->c_oflag
-#ifdef ONLCR
-                                                                | ONLCR
-#endif
-                                       )
-#ifdef OCRNL
-                                       & ~OCRNL
-#endif
-#ifdef ONLRET
-                                       & ~ONLRET
-#endif
-                                       ;
+                               mode->c_oflag = (mode->c_oflag | ONLCR) & ~OCRNL & ~ONLRET;
                        } else {
                                mode->c_iflag = mode->c_iflag & ~ICRNL;
-#ifdef ONLCR
-                               mode->c_oflag = mode->c_oflag & ~ONLCR;
-#endif
+                               if (ONLCR) mode->c_oflag = mode->c_oflag & ~ONLCR;
                        }
                } else if (info->name == stty_ek) {
                        mode->c_cc[VERASE] = CERASE;
@@ -853,42 +874,31 @@ set_mode(const struct mode_info *info, int reversed, struct termios *mode)
                                /* Raw mode */
                                mode->c_iflag = 0;
                                mode->c_oflag &= ~OPOST;
-                               mode->c_lflag &= ~(ISIG | ICANON
-#ifdef XCASE
-                                                                  | XCASE
-#endif
-                                       );
+                               mode->c_lflag &= ~(ISIG | ICANON | XCASE);
                                mode->c_cc[VMIN] = 1;
                                mode->c_cc[VTIME] = 0;
                        }
                }
-#ifdef IXANY
-               else if (info->name == decctlq) {
+               else if (IXANY && info->name == decctlq) {
                        if (reversed)
                                mode->c_iflag |= IXANY;
                        else
                                mode->c_iflag &= ~IXANY;
                }
-#endif
-#ifdef TABDLY
-               else if (info->name == stty_tabs) {
+               else if (TABDLY && info->name == stty_tabs) {
                        if (reversed)
                                mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB3;
                        else
                                mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB0;
                }
-#else
-# ifdef OXTABS
-               else if (info->name == stty_tabs) {
+               else if (OXTABS && info->name == stty_tabs) {
                        if (reversed)
                                mode->c_oflag = mode->c_oflag | OXTABS;
                        else
                                mode->c_oflag = mode->c_oflag & ~OXTABS;
                }
-# endif
-#endif
-#if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
-               else if (info->name == stty_lcase || info->name == stty_LCASE) {
+               else if (XCASE && IUCLC && OLCUC
+               && (info->name == stty_lcase || info->name == stty_LCASE)) {
                        if (reversed) {
                                mode->c_lflag &= ~XCASE;
                                mode->c_iflag &= ~IUCLC;
@@ -899,31 +909,14 @@ set_mode(const struct mode_info *info, int reversed, struct termios *mode)
                                mode->c_oflag |= OLCUC;
                        }
                }
-#endif
                else if (info->name == stty_crt)
-                       mode->c_lflag |= ECHOE
-#ifdef ECHOCTL
-                               | ECHOCTL
-#endif
-#ifdef ECHOKE
-                               | ECHOKE
-#endif
-                               ;
+                       mode->c_lflag |= ECHOE | ECHOCTL | ECHOKE;
                else if (info->name == stty_dec) {
                        mode->c_cc[VINTR] = 3;  /* ^C */
                        mode->c_cc[VERASE] = 127;       /* DEL */
                        mode->c_cc[VKILL] = 21; /* ^U */
-                       mode->c_lflag |= ECHOE
-#ifdef ECHOCTL
-                               | ECHOCTL
-#endif
-#ifdef ECHOKE
-                               | ECHOKE
-#endif
-                               ;
-#ifdef IXANY
-                       mode->c_iflag &= ~IXANY;
-#endif
+                       mode->c_lflag |= ECHOE | ECHOCTL | ECHOKE;
+                       if (IXANY) mode->c_iflag &= ~IXANY;
                }
        } else if (reversed)
                *bitsp = *bitsp & ~((unsigned long)info->mask) & ~info->bits;