[ctxt] add logging

src/ax.h

@@ -18,7 +18,7 @@ void ax_free(struct ax_ctxt* ax);
 
 const char* ax_get_error(struct ax_ctxt* ax);
 
-void ax_set_logger_fd(struct ax_ctxt* ax, int fd);
+void ax_set_logger(struct ax_ctxt* ax, int fd, bool auto_close);
 void ax_log(struct ax_ctxt* ax, const char* string);
 
 /* -----------------------------------------------------------------------------

src/ctxt.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <stdbool.h>
+#include <stdio.h>
 #include "util/region.h"
 
 struct ax_theme;
@@ -8,6 +10,10 @@ struct ax_theme_builder;
 struct ax_ctxt {
     struct rgn* init_rgn;
 
+    // logging
+    FILE* log_out;
+    bool log_auto_close;
+
     // errors
     struct rgn err_rgn;
     const char* err;

src/ctxt/ctxt.c

@@ -38,6 +38,9 @@ void ax__ctxt_init(struct ax_ctxt* ax, struct rgn* init_rgn)
 {
     ax->init_rgn = init_rgn;
 
+    ax->log_out = NULL;
+    ax->log_auto_close = false;
+
     rgn_init(&ax->err_rgn, SMALL);
     ax->err = "";
 
@@ -52,6 +55,26 @@ void ax__ctxt_cleanup(struct ax_ctxt* ax)
     rgn_cleanup(&ax->err_rgn);
 }
 
+/* -----------------------------------------------------------------------------
+ * API functions :: logging
+ * -------------------------------------------------------------------------- */
+
+void ax_set_logger(struct ax_ctxt* ax, int fd, bool auto_close)
+{
+    if (ax->log_auto_close) {
+        fclose(ax->log_out);
+    }
+    ax->log_out = fdopen(fd, "w");
+    ax->log_auto_close = auto_close;
+}
+
+void ax_log(struct ax_ctxt* ax, const char* string)
+{
+    if (ax->log_out != NULL) {
+        fprintf(ax->log_out, "[LOG] %s\n", string);
+    }
+}
+
 /* -----------------------------------------------------------------------------
  * API functions :: themes
  * -------------------------------------------------------------------------- */
@@ -116,5 +139,6 @@ int ax_select_theme(struct ax_ctxt* ax, struct ax_theme* thm)
     }
     // TODO: see if font is loaded
     ax->sel_theme = thm;
+    ax_log(ax, "theme selected");
     return 0;
 }

test/main.c

@@ -6,6 +6,8 @@
 int main(void)
 {
     struct ax_ctxt* ax = ax_new();
+    ax_set_logger(ax, 0, false);
+
     int rv;
 #define GUARD(f, ...) if ((rv = f(__VA_ARGS__)) != 0) goto cleanup
 
@@ -17,7 +19,7 @@ int main(void)
     struct ax_theme* thm;
     ax_end_theme(ax, &thm);
 
-    printf("----\ngot here\n----\n");
+    ax_log(ax, "got here");
 
     if ((rv = ax_select_theme(ax, thm)) != 0) {
         goto cleanup;