diag: New functions for highlighting command line arguments

1 files changed, 23 insertions, 1 deletions

diff --git a/diag.h b/diag.h
index aa5e1c7..39129cc 100644
--- a/diag.h
+++ b/diag.h
@@ -1,6 +1,6 @@
 /****************************************************************************
  * bfs                                                                      *
- * Copyright (C) 2019 Tavian Barnes <tavianator@tavianator.com>             *
+ * Copyright (C) 2019-2022 Tavian Barnes <tavianator@tavianator.com>        *
  *                                                                          *
  * Permission to use, copy, modify, and/or distribute this software for any *
  * purpose with or without fee is hereby granted.                           *
@@ -26,6 +26,8 @@
 #include <stdarg.h>
 #include <stdbool.h>
 
+struct bfs_expr;
+
 /**
  * Like perror(), but decorated like bfs_error().
  */
@@ -83,4 +85,24 @@ bool bfs_warning_prefix(const struct bfs_ctx *ctx);
  */
 bool bfs_debug_prefix(const struct bfs_ctx *ctx, enum debug_flags flag);
 
+/**
+ * Highlight parts of the command line in an error message.
+ */
+void bfs_argv_error(const struct bfs_ctx *ctx, const bool *args);
+
+/**
+ * Highlight parts of an expression in an error message.
+ */
+void bfs_expr_error(const struct bfs_ctx *ctx, const struct bfs_expr *expr);
+
+/**
+ * Highlight parts of the command line in a warning message.
+ */
+bool bfs_argv_warning(const struct bfs_ctx *ctx, const bool *args);
+
+/**
+ * Highlight parts of an expression in a warning message.
+ */
+bool bfs_expr_warning(const struct bfs_ctx *ctx, const struct bfs_expr *expr);
+
 #endif // BFS_DIAG_H