Crate htoprs 

htoprs — a faithful Rust port of htop.

The C source at ~/forkedRepos/htop (v3.5.1) is the spec. Every function under ported ports a specific htop C function, cited by <File>.c:<line> in its doc comment. The port-purity gate in build.rs rejects any free fn under src/ported/ whose name has no counterpart in the htop C source (snapshotted at tests/data/htop_c_fn_names.txt).

Clippy and faithful ports

CI runs cargo clippy --all-targets -- -D warnings. A handful of idiom lints are allowed crate-wide because the flagged code is a literal translation of the htop C source, and rewriting it into the idiomatic Rust clippy prefers would either diverge from the spec or change behavior:

• needless_range_loop / explicit_counter_loop — dual-index for (i, j) … loops (strncpy, RichString fills) mirror the C pointer walks; iterator rewrites lose the 1:1 line mapping.
• manual_div_ceil — (cpus + 1) / 2 is the C half-split formula.
• implicit_saturating_sub — count > MAX ? count - MAX : 0 is the C ternary; saturating_sub reads differently from the source.
• manual_pattern_char_comparison — explicit \n/\r compares match the C trailing-newline strip.
• neg_cmp_op_on_partial_ord — !(rate >= 0.0) is a deliberate NaN guard from Row.c; rate < 0.0 would treat NaN as valid.
• identity_op / int_plus_one — test assertions spell out the C arithmetic (0 + 0 - scrollV + 1, len >= n + 1) for clarity.
• doc_lazy_continuation — ported doc comments carry C-snippet bullet lists whose wrapped lines trip the lint.
• field_reassign_with_default — htop’s *_init routines set fields one at a time on a freshly calloc’d struct; the port mirrors that line-for-line rather than collapsing into a struct literal.
• unnecessary_unwrap — if x.is_some() { x.unwrap() } mirrors the C if (ptr) { ptr->… } null-check-then-deref shape.
• manual_c_str_literals — b"kern.osrelease\0" are the literal C string constants passed to sysctlbyname; c"…" hides the NUL the source spells out.
• not_unsafe_ptr_arg_deref — ported helpers keep htop’s raw-pointer parameter signatures; marking them unsafe would change the API.
• too_many_arguments — ported functions keep htop’s C parameter lists verbatim.
• erasing_op — test assertions spell out C arithmetic that folds to zero ((-20 + 20) / 5 = the nice→ioprio mapping) for clarity.
• needless_late_init — a buffer declared then filled inside a match/switch mirrors htop’s char* buffer; switch(field){…}.

Modules

extensions

htoprs-original extensions.

ported

Faithful ports of htop C source files.

Macros

CRT_debug

Port of the CRT_debug(...) macro from CRT.h:167–170. In debug builds (#else of #ifdef NDEBUG) it forwards __FILE__/__LINE__ plus the formatted arguments to CRT_debug_impl; in release (NDEBUG) it expands to nothing, discarding its arguments unevaluated exactly like the empty C #define CRT_debug(...). Rust has no stable __func__, so the function name passed to CRT_debug_impl is empty.