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Add support for framework-dependent apphost (#3888)
Add support for framework-dependent apphost
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| // Copyright (c) .NET Foundation and contributors. All rights reserved. | ||
| // Licensed under the MIT license. See LICENSE file in the project root for full license information. | ||
|
|
||
| #include "pal.h" | ||
| #include "trace.h" | ||
| #include "utils.h" | ||
| #include "cpprest/json.h" | ||
| #include "startup_config.h" | ||
|
|
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| startup_config_t::startup_config_t() | ||
| : m_valid(false) | ||
| { | ||
| } | ||
|
|
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| void startup_config_t::parse(const pal::string_t& path) | ||
| { | ||
| trace::verbose(_X("Attempting to read startup config: %s"), path.c_str()); | ||
|
|
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| m_valid = parse_internal(path); | ||
| if (!m_valid) | ||
| { | ||
| trace::verbose(_X("Did not successfully parse the startup.config.json")); | ||
| } | ||
| } | ||
|
|
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| bool startup_config_t::parse_internal(const pal::string_t& path) | ||
| { | ||
| pal::string_t retval; | ||
| if (!pal::file_exists(path)) | ||
| { | ||
| // Not existing is not an error. | ||
| return true; | ||
| } | ||
|
|
||
| pal::ifstream_t file(path); | ||
| if (!file.good()) | ||
| { | ||
| trace::verbose(_X("File stream not good %s"), path.c_str()); | ||
| return false; | ||
| } | ||
|
|
||
| if (skip_utf8_bom(&file)) | ||
| { | ||
| trace::verbose(_X("UTF-8 BOM skipped while reading [%s]"), path.c_str()); | ||
| } | ||
|
|
||
| try | ||
| { | ||
| const auto root = web::json::value::parse(file); | ||
| const auto& json = root.as_object(); | ||
| const auto options = json.find(_X("startupOptions")); | ||
| if (options != json.end()) | ||
| { | ||
| const auto& prop_obj = options->second.as_object(); | ||
|
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| auto appRoot = prop_obj.find(_X("appRoot")); | ||
| if (appRoot != prop_obj.end()) | ||
| { | ||
| m_app_root = appRoot->second.as_string(); | ||
| } | ||
| } | ||
| } | ||
| catch (const std::exception& je) | ||
| { | ||
| pal::string_t jes; | ||
| (void)pal::utf8_palstring(je.what(), &jes); | ||
| trace::error(_X("A JSON parsing exception occurred in [%s]: %s"), path.c_str(), jes.c_str()); | ||
| return false; | ||
| } | ||
|
|
||
| return true; | ||
| } |
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