make ty* fail nicely when in tmux/screen

src/bin/Makefile.am

@@ -63,43 +63,48 @@ gravatar.c gravatar.h \
 tty_keys.h
 
 tybg_SOURCES = \
+tycommon.c \
 tybg.c
 
 tybg_CPPFLAGS = -I. \
 -DPACKAGE_BIN_DIR=\"$(bindir)\" -DPACKAGE_LIB_DIR=\"$(libdir)\" \
--DPACKAGE_DATA_DIR=\"$(pkgdatadir)\"
+-DPACKAGE_DATA_DIR=\"$(pkgdatadir)\" @TERMINOLOGY_CFLAGS@
 
 tybg_LDADD =
 
 tyalpha_SOURCES = \
+tycommon.c \
 tyalpha.c
 
 tyalpha_CPPFLAGS = -I. \
 -DPACKAGE_BIN_DIR=\"$(bindir)\" -DPACKAGE_LIB_DIR=\"$(libdir)\" \
--DPACKAGE_DATA_DIR=\"$(pkgdatadir)\"
+-DPACKAGE_DATA_DIR=\"$(pkgdatadir)\" @TERMINOLOGY_CFLAGS@
 
 tyalpha_LDADD =
 
 typop_SOURCES = \
+tycommon.c \
 typop.c
 
 typop_CPPFLAGS = -I. \
 -DPACKAGE_BIN_DIR=\"$(bindir)\" -DPACKAGE_LIB_DIR=\"$(libdir)\" \
--DPACKAGE_DATA_DIR=\"$(pkgdatadir)\"
+-DPACKAGE_DATA_DIR=\"$(pkgdatadir)\" @TERMINOLOGY_CFLAGS@
 
 typop_LDADD =
 
 tyq_SOURCES = \
+tycommon.c \
 tyq.c
 
 tyq_CPPFLAGS = -I. \
 -DPACKAGE_BIN_DIR=\"$(bindir)\" -DPACKAGE_LIB_DIR=\"$(libdir)\" \
--DPACKAGE_DATA_DIR=\"$(pkgdatadir)\"
+-DPACKAGE_DATA_DIR=\"$(pkgdatadir)\" @TERMINOLOGY_CFLAGS@
 
 tyq_LDADD =
 
 tycat_SOURCES = \
 tycat.c \
+tycommon.c \
 extns.c extns.h
 
 tycat_CPPFLAGS = -I. \
@@ -110,6 +115,7 @@ tycat_LDADD = @TERMINOLOGY_LIBS@
 
 tyls_SOURCES = \
 tyls.c \
+tycommon.c \
 extns.h
 
 tyls_CPPFLAGS = -I. \

src/bin/tyalpha.c

@@ -4,12 +4,16 @@
 #include <unistd.h>
 #include <string.h>
 
+#include <Eina.h>
+#include "tycommon.h"
+
 int
 main(int argc, char **argv)
 {
    int i, perm = 0;
 
-   if (!getenv("TERMINOLOGY")) return 0;
+   ON_NOT_RUNNING_IN_TERMINOLOGY_EXIT_1();
+
    if (argc <= 1)
      {
         printf("Usage: %s [-p] on|off|<opacity level>\n"

src/bin/tybg.c

@@ -4,12 +4,17 @@
 #include <unistd.h>
 #include <string.h>
 
+#include <Eina.h>
+#include "tycommon.h"
+
+
 int
 main(int argc, char **argv)
 {
    int i, perm = 0;
 
-   if (!getenv("TERMINOLOGY")) return 0;
+   ON_NOT_RUNNING_IN_TERMINOLOGY_EXIT_1();
+
    if (argc > 1 &&
        (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")))
      {

src/bin/tycat.c

@@ -11,6 +11,8 @@
 #include <unistd.h>
 #include <string.h>
 
+#include "tycommon.h"
+
 enum {
   CENTER,
   FILL,
@@ -308,7 +310,8 @@ main(int argc, char **argv)
    char *rp;
    Eina_List *file_q = NULL;
 
-   if (!getenv("TERMINOLOGY")) return 0;
+   ON_NOT_RUNNING_IN_TERMINOLOGY_EXIT_1();
+
    if (argc <= 1)
      {
         print_usage(argv[0]);

src/bin/tycommon.c

@@ -0,0 +1,21 @@
+#include <stdlib.h>
+#include <Eina.h>
+#include "tycommon.h"
+
+
+Eina_Bool
+is_running_in_terminology(void)
+{
+   if (!getenv("TERMINOLOGY"))
+     return EINA_FALSE;
+
+   // Terminology's escape codes do not got through tmux
+   if (getenv("TMUX"))
+     return EINA_FALSE;
+
+   // Terminology's escape codes do not got through screen
+   if (getenv("STY"))
+     return EINA_FALSE;
+
+   return EINA_TRUE;
+}

src/bin/tycommon.h

@@ -0,0 +1,18 @@
+#ifndef _TY_COMMON_H__
+#define _TY_COMMON_H__ 1
+
+Eina_Bool is_running_in_terminology(void);
+
+#define ON_NOT_RUNNING_IN_TERMINOLOGY_EXIT_1()                             \
+  do                                                                       \
+    {                                                                      \
+       if (!is_running_in_terminology())                                   \
+         {                                                                 \
+            fprintf(stderr, "not running in terminology\n");               \
+            exit(1);                                                       \
+         }                                                                 \
+    }                                                                      \
+  while (0)
+
+
+#endif

src/bin/tyls.c

@@ -11,6 +11,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <fnmatch.h>
+#include "tycommon.h"
 
 // this code sucks. just letting you know... in advance... in case you
 // might be tempted to think otherwise... :)
@@ -725,8 +726,9 @@ main(int argc, char **argv)
    char *path;
    Eina_List *dirs = NULL;
    Tyls_Options options = {SMALL, EINA_FALSE};
-   
+
-   if (!getenv("TERMINOLOGY")) return 0;
+   ON_NOT_RUNNING_IN_TERMINOLOGY_EXIT_1();
+
    if ((argc == 2) && (!strcmp(argv[1], "-h")))
      {
         printf("Usage: %s [-a] [-s|-m] FILE1 [FILE2 ...]\n"

src/bin/typop.c

@@ -4,12 +4,16 @@
 #include <unistd.h>
 #include <string.h>
 
+#include <Eina.h>
+#include "tycommon.h"
+
 int
 main(int argc, char **argv)
 {
    int i;
-   
+
-   if (!getenv("TERMINOLOGY")) return 0;
+   ON_NOT_RUNNING_IN_TERMINOLOGY_EXIT_1();
+
    if (argc <= 1)
      {
         printf("Usage: %s FILE1 [FILE2 ...]\n"

src/bin/tyq.c

@@ -4,12 +4,16 @@
 #include <unistd.h>
 #include <string.h>
 
+#include <Eina.h>
+#include "tycommon.h"
+
 int
 main(int argc, char **argv)
 {
    int i;
-   
+
-   if (!getenv("TERMINOLOGY")) return 0;
+   ON_NOT_RUNNING_IN_TERMINOLOGY_EXIT_1();
+
    if (argc <= 1)
      {
         printf("Usage: %s FILE1 [FILE2 ...]\n"