ref: 02ac617541ca1a7bf82b1615fb5a58235469b5d3
dir: /appl/alphabet/fs/match.b/
implement Match, Fsmodule; include "sys.m"; sys: Sys; include "filepat.m"; filepat: Filepat; include "regex.m"; regex: Regex; include "draw.m"; include "sh.m"; include "alphabet/reports.m"; Report: import Reports; include "alphabet/fs.m"; fs: Fs; Value: import fs; Fschan, Fsdata, Entrychan, Entry, Gatechan, Gatequery, Nilentry, Option, Next, Down, Skip, Quit: import Fs; Match: module {}; types(): string { return "ps-a-r"; } badmod(p: string) { sys->fprint(sys->fildes(2), "fs: size: cannot load %s: %r\n", p); raise "fail:bad module"; } init() { sys = load Sys Sys->PATH; fs = load Fs Fs->PATH; if(fs == nil) badmod(Fs->PATH); fs->init(); regex = load Regex Regex->PATH; if(regex == nil) badmod(Regex->PATH); filepat = load Filepat Filepat->PATH; if(filepat == nil) badmod(Filepat->PATH); } run(nil: ref Draw->Context, nil: ref Report, opts: list of Option, args: list of ref Value): ref Value { pat := (hd args).s().i; aflag := rflag := 0; for(; opts != nil; opts = tl opts){ case (hd opts).opt { 'a' => aflag = 1; 'r' => rflag = 1; } } v := ref Value.Vp(chan of Gatequery); re: Regex->Re; if(rflag){ err: string; (re, err) = regex->compile(pat, 0); if(re == nil){ sys->fprint(sys->fildes(2), "fs: match: regex error on %#q: %s\n", pat, err); return nil; } } spawn matchproc(v.i, aflag, pat, re); return v; } matchproc(c: Gatechan, all: int, pat: string, re: Regex->Re) { while((((d, name, nil), reply) := <-c).t0.t0 != nil){ if(all == 0) name = d.name; if(re != nil) reply <-= regex->execute(re, name) != nil; # XXX should anchor it? else reply <-= filepat->match(pat, name); } }