[json_parser] Enable json_parser target and tests for host, tidy up

This library contains json parsing utilities that are useful on host
and/or very similar to other library utilities that are useful on host.
This fixes up the build rules and code to build on all supported host
targets (avoiding strlcpy) and reuses directory enumeration / file
testing logic from src/lib/files/ and also tidies up the build rules
and namespace.

This also removes code in the appmgr integration test that attempted to
read configuration data from the path "/system/data/sysmgr" which no
longer exists. Previously, JSONParser::ParseFromDirectory would return
no error if it was unable to open a directory. This commit changes the
behavior to report an error in this case.

Bug: 36759

Change-Id: Ic7af0ac23181a9bff678204c68ed96beb9784f5b
9 files changed
tree: c658fb61ec60e307e9a1c7c038f06a96ebc2892b
  1. boards/
  2. build/
  3. bundles/
  4. docs/
  5. examples/
  6. garnet/
  7. peridot/
  8. products/
  9. scripts/
  10. sdk/
  11. src/
  12. third_party/
  13. tools/
  14. zircon/
  15. .clang-format
  16. .clang-tidy
  17. .dir-locals.el
  18. .gitattributes
  19. .gitignore
  20. .gn
  21. .style.yapf
  22. AUTHORS
  23. BUILD.gn
  24. CODE_OF_CONDUCT.md
  25. CONTRIBUTING.md
  26. LICENSE
  27. OWNERS
  28. PATENTS
  29. README.md
  30. rustfmt.toml
README.md

Fuchsia

Pink + Purple == Fuchsia (a new operating system)

What is Fuchsia?

Fuchsia is a modular, capability-based operating system. Fuchsia runs on modern 64-bit Intel and ARM processors.

Fuchsia is an open source project with a code of conduct that we expect everyone who interacts with the project to respect.

How can I build and run Fuchsia?

See Getting Started.

Where can I learn more about Fuchsia?

See fuchsia.dev.