Print nicer messages when encountering JSON parsing errors (#88)

Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>

Author: jviotti

DEPENDENCIES

@@ -1,4 +1,4 @@
 vendorpull https://github.com/sourcemeta/vendorpull dea311b5bfb53b6926a4140267959ae334d3ecf4
 noa https://github.com/sourcemeta/noa 2bc3138b80e575786bec418c91fc2058c6836993
-jsontoolkit https://github.com/sourcemeta/jsontoolkit 37580da97c6549cd5995b3ef62ad47892246ebfd
+jsontoolkit https://github.com/sourcemeta/jsontoolkit 1d291fc26bae59e778067e5dfa54096a1fb608f3
 hydra https://github.com/sourcemeta/hydra 3c53d3fdef79e9ba603d48470a508cc45472a0dc

src/main.cc

@@ -129,6 +129,14 @@ auto main(int argc, char *argv[]) noexcept -> int {
   } catch (const sourcemeta::jsontoolkit::SchemaResolutionError &error) {
     std::cerr << error.what() << ": " << error.id() << "\n";
     return EXIT_FAILURE;
+  } catch (const sourcemeta::jsontoolkit::FileParseError &error) {
+    std::cerr << error.path().string() << "\n  " << error.what() << " at line "
+              << error.line() << " and column " << error.column() << "\n";
+    return EXIT_FAILURE;
+  } catch (const sourcemeta::jsontoolkit::ParseError &error) {
+    std::cerr << error.what() << " at line " << error.line() << " and column "
+              << error.column() << "\n";
+    return EXIT_FAILURE;
   } catch (const std::exception &error) {
     std::cerr << "Error: " << error.what() << "\n";
     return EXIT_FAILURE;

src/utils.cc

@@ -53,6 +53,7 @@ auto handle_json_entry(
                          return prefix == canonical ||
                                 path_starts_with(canonical, prefix);
                        })) {
+        // TODO: Print a verbose message for what is getting parsed
         result.emplace_back(canonical,
                             sourcemeta::jsontoolkit::from_file(canonical));
       }
@@ -74,6 +75,7 @@ auto handle_json_entry(
                        return prefix == canonical ||
                               path_starts_with(canonical, prefix);
                      })) {
+      // TODO: Print a verbose message for what is getting parsed
       result.emplace_back(canonical,
                           sourcemeta::jsontoolkit::from_file(canonical));
     }

test/CMakeLists.txt

@@ -24,6 +24,7 @@ add_jsonschema_test_unix(format_check_single_fail)
 add_jsonschema_test_unix(format_check_single_pass)
 add_jsonschema_test_unix(format_directory_ignore_directory)
 add_jsonschema_test_unix(format_directory_ignore_file)
+add_jsonschema_test_unix(format_check_single_invalid)
 add_jsonschema_test_unix(frame)
 add_jsonschema_test_unix(validate_pass_draft4)
 add_jsonschema_test_unix(validate_fail_draft4)

test/format_check_single_invalid.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+
+set -o errexit
+set -o nounset
+
+TMP="$(mktemp -d)"
+clean() { rm -rf "$TMP"; }
+trap clean EXIT
+
+cat << 'EOF' > "$TMP/schema.json"
+{
+  "$schema": "http://json-schema.org/draft-04/schema#"
+  "type" 1,
+}
+EOF
+
+"$1" fmt "$TMP/schema.json" --check 2>"$TMP/output.txt" && CODE="$?" || CODE="$?"
+
+if [ "$CODE" = "0" ]
+then
+  echo "FAIL" 1>&2
+  exit 1
+fi
+
+cat << EOF > "$TMP/expected.txt"
+$(realpath "$TMP/schema.json")
+  Failed to parse the JSON document at line 3 and column 3
+EOF
+
+diff "$TMP/output.txt" "$TMP/expected.txt"
+echo "PASS" 1>&2