Ignore line comments in conanfile.txt

CHANGELOG.md

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Ignore line comments in conanfile.txt
 
 ## [0.2.0] - 2022-02-18
 
@@ -21,7 +24,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Get requirements directly from conanfile.py/conanfile.txt instead running conan info
 
-
 ## [0.1.0] - 2021-12-16
 
 Initial public release

src/conan_check_updates/conan.py

@@ -216,9 +216,11 @@ def inspect_requires_conanfile_txt(conanfile: Path) -> List[ConanReference]:
     with open(conanfile, mode="r", encoding="utf-8") as file:
         key = None
         for line in file:
-            line = line.partition(" #")[0]  # strip comment
             line = line.strip()
-            if not line:
+            # strip end of line comment
+            line = line.partition(" #")[0].strip()
+            # ignore empty line or line comments
+            if not line or line.startswith("#"):
                 continue
             if line.startswith("[") and line.endswith("]"):
                 key = line[1:-1]

tests/conanfile.txt

@@ -1,7 +1,8 @@
 [requires]
 boost/1.79.0
 catch2/3.2.0
-fmt/9.0.0
+# line comment
+fmt/9.0.0  # end of line comment
 nlohmann_json/3.10.0
 
 [tool_requires]