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Support fetching sub-schemas from other files

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This commit is contained in:
Matt Young 2021-09-09 19:27:13 +02:00
parent ad7dac75a5
commit d3104ea8d8
1 changed files with 23 additions and 10 deletions
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33
include/valijson/schema_parser.hpp
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@ -171,21 +171,21 @@ private:
}
/**
* @brief Find the absolute URI for a document, within a resolution scope
* @brief Find the complete URI for a document, within a resolution scope
*
* This function captures five different cases that can occur when
* attempting to resolve a document URI within a particular resolution
* scope:
*
* - resolution scope not present, but absolute document URI is
* (1) resolution scope not present, but URN or absolute document URI is
* => document URI as-is
* - resolution scope not present, and document URI is relative or absent
* => no result
* - resolution scope is present, and document URI is a relative path
* (2) resolution scope not present, and document URI is relative or absent
* => document URI, if present, otherwise no result
* (3) resolution scope is present, and document URI is a relative path
* => resolve document URI relative to resolution scope
* - resolution scope is present, and document URI is absolute
* (4) resolution scope is present, and document URI is absolute
* => document URI as-is
* - resolution scope is present, but document URI is not
* (5) resolution scope is present, but document URI is not
* => resolution scope as-is
*
* This function assumes that the resolution scope is absolute.
@ -194,26 +194,39 @@ private:
* document URI should be used to replace the path, query and fragment
* portions of URI provided by the resolution scope.
*/
virtual opt::optional<std::string> findAbsoluteDocumentUri(
virtual opt::optional<std::string> resolveDocumentUri(
const opt::optional<std::string>& resolutionScope,
const opt::optional<std::string>& documentUri)
{
if (resolutionScope) {
if (documentUri) {
if (internal::uri::isUriAbsolute(*documentUri) || internal::uri::isUrn(*documentUri)) {
// (4) resolution scope is present, and document URI is absolute
// => document URI as-is
return *documentUri;
} else {
// (3) resolution scope is present, and document URI is a relative path
// => resolve document URI relative to resolution scope
return internal::uri::resolveRelativeUri(*resolutionScope, *documentUri);
}
} else {
// (5) resolution scope is present, but document URI is not
// => resolution scope as-is
return *resolutionScope;
}
} else if (documentUri && internal::uri::isUriAbsolute(*documentUri)) {
// (1a) resolution scope not present, but absolute document URI is
// => document URI as-is
return *documentUri;
} else if (documentUri && internal::uri::isUrn(*documentUri)) {
// (1b) resolution scope not present, but URN is
// => document URI as-is
return *documentUri;
} else {
return opt::optional<std::string>();
// (2) resolution scope not present, and document URI is relative or absent
// => document URI, if present, otherwise no result
// documentUri is already std::optional
return documentUri;
}
}
@ -403,7 +416,7 @@ private:
// scope. An absolute document URI will take precedence when
// present, otherwise we need to resolve the URI relative to
// the current resolution scope
const opt::optional<std::string> actualDocumentUri = findAbsoluteDocumentUri(currentScope, documentUri);
const opt::optional<std::string> actualDocumentUri = resolveDocumentUri(currentScope, documentUri);
// Construct a key to search the schema cache for an existing schema
const std::string queryKey = actualDocumentUri ? (*actualDocumentUri + actualJsonPointer) : actualJsonPointer;