From 5c098cfc98af658e72247f983e7aa7aea60fa4f9 Mon Sep 17 00:00:00 2001
From: "adam@2khz.xyz" <adam@2khz.xyz>
Date: Sun, 17 Aug 2025 01:00:16 +0100
Subject: [PATCH] 0.2.1: bug fix overwrite mode

---
 Cargo.lock       | 2 +-
 Cargo.toml       | 2 +-
 src/cfg.rs       | 6 +++---
 src/constants.rs | 4 ++++
 src/main.rs      | 2 +-
 5 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index cf09fcd..360c89c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = 4
 
 [[package]]
 name = "bin2hpp"
-version = "0.2.0"
+version = "0.2.1"
 dependencies = [
  "thiserror",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 7aa17ee..018b2b6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "bin2hpp"
-version = "0.2.0"
+version = "0.2.1"
 authors = ["Adam Macdonald"]
 edition = "2024"
 license = "GPL-3.0-only"
diff --git a/src/cfg.rs b/src/cfg.rs
index 9925708..221f388 100644
--- a/src/cfg.rs
+++ b/src/cfg.rs
@@ -69,7 +69,7 @@ pub fn parse_config_from_args(args: &CliArgs) -> Result<Config, ProgramConfigErr
         constness: args.constness,
         symbol_name: match &args.symbol_name {
             Some(s) => {
-                if s.chars().all(|c| c.is_ascii_alphanumeric()) {
+                if s.chars().all(|c| c.is_ascii_alphanumeric() || c == '_') {
                     s.to_string()
                 } else {
                     return Err(ProgramConfigError::InvalidSymbolName(s.to_string()));
@@ -101,7 +101,7 @@ pub fn parse_config_from_args(args: &CliArgs) -> Result<Config, ProgramConfigErr
         },
         namespace: match &args.namespace {
             Some(ns) => {
-                if ns.chars().all(|c| c.is_ascii_alphanumeric()) {
+                if ns.chars().all(|c| c.is_ascii_alphanumeric() || c == '_') {
                     Some(ns.to_string())
                 } else {
                     return Err(ProgramConfigError::InvalidSymbolName(ns.to_string()));
@@ -111,7 +111,7 @@ pub fn parse_config_from_args(args: &CliArgs) -> Result<Config, ProgramConfigErr
         },
         guard_name: match &args.guard_name {
             Some(guard) => {
-                if guard.chars().all(|c| c.is_ascii_alphanumeric()) {
+                if guard.chars().all(|c| c.is_ascii_alphanumeric() || c == '_') {
                     guard.clone()
                 } else {
                     return Err(ProgramConfigError::InvalidSymbolName(guard.to_string()));
diff --git a/src/constants.rs b/src/constants.rs
index d875060..5dff3f4 100644
--- a/src/constants.rs
+++ b/src/constants.rs
@@ -21,9 +21,11 @@ OUTPUT OPTIONS:
 
 --lf                Use UNIX-style LF line endings  (default)
 --crlf              Use Windows-style CRLF line endings
+
 --mutable           Whether the symbol should not be marked as const
 --const             Whether the symbol should be marked as const    (default)
 --constexpr         Whether the symbol should be marked as constexpr (C++ mode)
+
 --symname NAME      Symbol name
 --namespace NAME    Namespace in which the symbol will exist
                     (uses namespace example {} in C++ mode and prepends
@@ -46,5 +48,7 @@ BYTES TYPES FOR ARRAYS:
 --u8                C/C++'s (std::)uint8_t type
 --i8                C/C++'s (std::)int8_t type
 
+MISCELLANEOUS:
+
 -h | --help         Show this help text
 -v | --version      Print the program's build & version information";
diff --git a/src/main.rs b/src/main.rs
index e155675..0b0185d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -87,7 +87,7 @@ fn write_header(config: &Config) -> Result<(), HeaderGenerationError> {
     let out_file = OpenOptions::new()
         .write(true)
         .truncate(config.overwrite)
-        .create_new(!config.overwrite)
+        .create(true)
         .open(config.output_file_path.clone())
         .expect("failed to open input file");
     let mut writer = BufWriter::new(out_file);