gi-server

commit 24da4f2a1bb4df68d5d6c706bbbf7ff3c083c132
parent cb16b23be62ad9224ef8513b3269627c8df06d8f
Author: Tomas Hlavaty <tom@logand.com>
Date:   Sun, 16 Aug 2015 18:08:17 +0200

better error handling

Diffstat:
M
gi-server.c
 | 
25
++++++++++++++++++-------

1 file changed, 18 insertions(+), 7 deletions(-)
diff --git a/gi-server.c b/gi-server.c
@@ -15,6 +15,17 @@ static void skip(void) {
   ungetc(c, stdin);
 }
 
+enum {
+  OUT_OF_MEMORY = 1,
+  UNEXPECTED_EOF = 2
+};
+
+static void put(char c) {
+  if(heap + HSIZE <= top)
+    exit(OUT_OF_MEMORY);
+  *top++ = c;
+}
+
 static char *token(void) {
   skip();
   char *z = top;
@@ -22,21 +33,21 @@ static char *token(void) {
   if('"' == c) {
     while('"' != (c = getc(stdin)) && EOF != c) {
       if(EOF == c)
-        exit(1);
+        exit(UNEXPECTED_EOF);
       if('\\' == c) {
         c = getc(stdin);
         if(EOF == c)
-          exit(1);
+          exit(UNEXPECTED_EOF);
       }
-      *top++ = c;
+      put(c);
     }
-    *top++ = 0;
+    put(0);
     return z;
   } else {
-    *top++ = c;
+    put(c);
     while(!isspace(c = getc(stdin)) && EOF != c)
-      *top++ = c;
-    *top++ = 0;
+      put(c);
+    put(0);
     return !strcmp("null", z) ? (char *) NULL : z;
   };
 }