Merge pull request #8 from stephenmathieson/format-via-env

Enable custom timestamp formats via env flag
marcomorain · Feb 26, 2014 · 3d5c432 · 3d5c432
2 parents 32c0beb + 3765d3b
commit 3d5c432
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/tcat.c b/tcat.c
@@ -11,7 +11,8 @@ enum {
 };
 
 static const char program_name[] = "tcat";
-static const char format[]       = "%FT%T%z\t";
+static const char env_flag[]     = "TCAT_FORMAT";
+static const char *format        = "%FT%T%z\t";
 
 static void io_error(FILE* file) {
   if (feof(file)) {
@@ -90,6 +91,11 @@ int main(int argc, char** argv) {
     fprintf(stderr, "Warning: input is from TTY\n");
   }
 
+  char *format_env = getenv(env_flag);
+  if (format_env) {
+    format = format_env;
+  }
+
   int last = '\n';
   for(int c = fgetc(stdin); c != EOF; c = fgetc(stdin)) {
     if (last == '\n') {