bundle-uri: parse bundle.<id>.creationToken values

The previous change taught Git to parse the bundle.heuristic value,
especially when its value is "creationToken". Now, teach Git to parse
the bundle.<id>.creationToken values on each bundle in a bundle list.

Before implementing any logic based on creationToken values for the
creationToken heuristic, parse and print these values for testing
purposes.

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

bundle-uri.c

@@ -83,6 +83,9 @@ static int summarize_bundle(struct remote_bundle_info *info, void *data)
 	FILE *fp = data;
 	fprintf(fp, "[bundle \"%s\"]\n", info->id);
 	fprintf(fp, "\turi = %s\n", info->uri);
+
+	if (info->creationToken)
+		fprintf(fp, "\tcreationToken = %"PRIu64"\n", info->creationToken);
 	return 0;
 }
 
@@ -203,6 +206,13 @@ static int bundle_list_update(const char *key, const char *value,
 		return 0;
 	}
 
+	if (!strcmp(subkey, "creationtoken")) {
+		if (sscanf(value, "%"PRIu64, &bundle->creationToken) != 1)
+			warning(_("could not parse bundle list key %s with value '%s'"),
+				"creationToken", value);
+		return 0;
+	}
+
 	/*
 	 * At this point, we ignore any information that we don't
 	 * understand, assuming it to be hints for a heuristic the client

bundle-uri.h

@@ -42,6 +42,12 @@ struct remote_bundle_info {
 	 * this boolean is true.
 	 */
 	unsigned unbundled:1;
+
+	/**
+	 * If the bundle is part of a list with the creationToken
+	 * heuristic, then we use this member for sorting the bundles.
+	 */
+	uint64_t creationToken;
 };
 
 #define REMOTE_BUNDLE_INFO_INIT { 0 }

t/t5750-bundle-uri-parse.sh

@@ -258,10 +258,13 @@ test_expect_success 'parse config format: creationToken heuristic' '
 		heuristic = creationToken
 	[bundle "one"]
 		uri = http://example.com/bundle.bdl
+		creationToken = 123456
 	[bundle "two"]
 		uri = https://example.com/bundle.bdl
+		creationToken = 12345678901234567890
 	[bundle "three"]
 		uri = file:///usr/share/git/bundle.bdl
+		creationToken = 1
 	EOF
 
 	test-tool bundle-uri parse-config expect >actual 2>err &&
@@ -269,4 +272,19 @@ test_expect_success 'parse config format: creationToken heuristic' '
 	test_cmp_config_output expect actual
 '
 
+test_expect_success 'parse config format edge cases: creationToken heuristic' '
+	cat >expect <<-\EOF &&
+	[bundle]
+		version = 1
+		mode = all
+		heuristic = creationToken
+	[bundle "one"]
+		uri = http://example.com/bundle.bdl
+		creationToken = bogus
+	EOF
+
+	test-tool bundle-uri parse-config expect >actual 2>err &&
+	grep "could not parse bundle list key creationToken with value '\''bogus'\''" err
+'
+
 test_done