1 files changed, 84 insertions, 0 deletions
diff --git a/lib/exceptions.c b/lib/exceptions.c
new file mode 100644
index 0000000..cd8bf81
--- /dev/null
+++ b/lib/exceptions.c
@@ -0,0 +1,84 @@
+/*
+ *
+ * Gestionnaire d'exceptions
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#else
+#define _(x) x
+#endif
+#include "exceptions.h"
+
+char *contexts[128];
+int clevel = 0;
+
+char *Estrdup(char *o)
+{
+	char *r;
+
+	if (o) {
+		if (!(r = strdup(o))) {
+			exception(1, _("Out of memory."));
+		}
+	} else {
+		return NULL;
+	}
+	return r;
+}
+
+void *Emalloc(size_t s)
+{
+	void *r;
+
+	if (s) {
+		if (!(r = malloc(s))) {
+			exception(1, _("Out of memory."));
+		}
+	} else {
+		return NULL;
+	}
+	return r;
+}
+
+void pushcontext(char *c)
+{
+	if (clevel == 128) {
+		exception(1, _("Too much error contexts during pushcontext()."));
+	}
+	contexts[clevel++] = Estrdup(c);
+#ifdef DEBUG	
+	fprintf(stderr,"%s\n",c);
+#endif
+}
+
+void popcontext(void)
+{
+	if (clevel == 0) {
+		exception(1, _("Error context empty, but popcontext() called."));
+	}
+	free(contexts[--clevel]);
+}
+
+void flushcontext(void)
+{
+	while (clevel) {
+		popcontext();
+	}
+}
+
+void exception(int level, char *msg)
+{
+	int i;
+
+	fprintf(stderr, "Error detected. Showing context.\n");
+	for (i = 0; i < clevel; i++) {
+		fprintf(stderr, " (%i) - %s\n", i, contexts[i]);
+	}
+	fprintf(stderr, "  Error description: %s\n", msg);
+	exit(level);
+}