From 32c1fbd2cf779a65e807d0d82412ffffa2401962 Mon Sep 17 00:00:00 2001
From: Aleksey Veresov <aleksey@veresov.pro>
Date: Fri, 15 Nov 2019 18:01:45 +0300
Subject: [magi]

---
 src/error.c | 78 ++++++++++++++++++++++++++++---------------------------------
 1 file changed, 36 insertions(+), 42 deletions(-)

(limited to 'src/error.c')

diff --git a/src/error.c b/src/error.c
index 106ca8c..01fae36 100644
--- a/src/error.c
+++ b/src/error.c
@@ -1,55 +1,49 @@
 #include "error.h"
 
+#include "utils.h"
 #include <stdarg.h>
 
 
-enum control { get, set };
-
-static struct magi_error * errorctl(
-    enum control command, struct magi_error_message * err)
-{
-    static struct magi_error * error = 0;
-    if (command == set) {
-        error = err;
-    }
-    return error;
-}
-
-
-struct magi_error * magi_error_get()
+void magi_error_add(struct magi_error ** error, char * format, ...)
 {
-    return errorctl(get, 0);
-}
-
-void magi_error_set(char * format, ...)
-{
-    for (;;) {
-        Create(len);
-        /* Try to print in the allocated space. */
-        va_list ap;
-        va_start(ap, format);
-        int n = vsnprintf(p->buf, len, format, ap);
-        va_end(ap);
-        /* If that worked, we're done */
-        if (n > -1 && n < len)
-            break;
-        /* Else try again with more space. */
-        if (n > -1)      /* glibc 2.1 */
-            len = n + 1; /* precisely what is needed */
-        else             /* glibc 2.0 */
-            len *= 2;    /* twice the old size */
+    if (error && format) {
+        struct magi_error * head = malloc(sizeof(*head));
+        if (head) {
+            int     size;
+            va_list args;
+
+            va_start(args, format);
+            size = vsnprintf(0, 0, format, args);
+            va_end(args);
+
+            if (size >= 0) {
+                head->message = malloc(++size);
+                if (head->message) {
+                    va_start(args, format);
+                    size = vsnprintf(head->message, size, format, args);
+                    va_end(args);
+                    if (size >= 0) {
+                        head->prev = *error;
+                        *error     = head;
+                        return;
+                    } else {
+                        free(head->message);
+                    }
+                }
+            }
+
+            free(head);
+        }
     }
-    errorctl();
 }
 
-void magi_error_rid()
+void magi_error_destroy(struct magi_error * error)
 {
-    struct magi_error * error = errorctl(get, 0);
     if (error) {
-        if (error->message) {
-            free(error->message);
-        }
-        free(error);
-        errorctl(set, 0);
+        magi_error_destroy(error->prev);
+        free(error->prev);
+        free(error->message);
+        error->prev    = 0;
+        error->message = 0;
     }
 }
-- 
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