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jq is a compiled, dependency-light C command-line tool and embeddable libjq library for transforming JSON and text streams. In production it acts as a Unix pipeline filter: it reads JSON, raw text, or JSON text sequences from stdin/files, parses them, evaluates a user-supplied filter expression, and writes transformed output to stdout. The filter language is a functional DSL compiled to a custom bytecode via a Flex lexer (src/lexer.l), Bison grammar (src/parser.y), block-based compiler (src/compile.c), and stack VM (src/execute.c) with tail-call optimization. JSON values are represented by the refcounted jv API (src/jv.c, src/jv.h), with carefully maintained UTF-8 handling and exact decimal parsing.
RATING:
MAINT: active
DRIFT: low
▸ 4 reusable components found
── end of results ──