ref: fc4bfd57d261e5c99c5d4367adf5c72e8c7e6496
dir: /sys/src/cmd/mk/main.c/
#include "mk.h" #define MKFILE "mkfile" static char *version = "@(#)mk general release 4 (plan 9)"; int debug; Rule *rules, *metarules; int nflag = 0; int tflag = 0; int iflag = 0; int kflag = 0; int aflag = 0; int uflag = 0; char *explain = 0; Word *target1; int nreps = 1; Job *jobs; Biobuf bout; Rule *patrule; void badusage(void); #ifdef PROF short buf[10000]; #endif void main(int argc, char **argv) { Word *w; char *s, *temp; char *files[256], **f = files, **ff; int sflag = 0; int i; int tfd = -1; Biobuf tb; Bufblock *buf; Bufblock *whatif; /* * start with a copy of the current environment variables * instead of sharing them */ Binit(&bout, 1, OWRITE); buf = newbuf(); whatif = 0; USED(argc); for(argv++; *argv && (**argv == '-'); argv++) { bufcpy(buf, argv[0], strlen(argv[0])); insert(buf, ' '); switch(argv[0][1]) { case 'a': aflag = 1; break; case 'd': if(*(s = &argv[0][2])) while(*s) switch(*s++) { case 'p': debug |= D_PARSE; break; case 'g': debug |= D_GRAPH; break; case 'e': debug |= D_EXEC; break; } else debug = 0xFFFF; break; case 'e': explain = &argv[0][2]; break; case 'f': if(*++argv == 0) badusage(); *f++ = *argv; bufcpy(buf, argv[0], strlen(argv[0])); insert(buf, ' '); break; case 'i': iflag = 1; break; case 'k': kflag = 1; break; case 'n': nflag = 1; break; case 's': sflag = 1; break; case 't': tflag = 1; break; case 'u': uflag = 1; break; case 'w': if(whatif == 0) whatif = newbuf(); else insert(whatif, ' '); if(argv[0][2]) bufcpy(whatif, &argv[0][2], strlen(&argv[0][2])); else { if(*++argv == 0) badusage(); bufcpy(whatif, &argv[0][0], strlen(&argv[0][0])); } break; default: badusage(); } } #ifdef PROF { extern etext(); monitor(main, etext, buf, sizeof buf, 300); } #endif if(aflag) iflag = 1; usage(); initenv(); usage(); /* assignment args become null strings */ temp = 0; for(i = 0; argv[i]; i++) if(utfrune(argv[i], '=')){ bufcpy(buf, argv[i], strlen(argv[i])); insert(buf, ' '); if(tfd < 0){ temp = maketmp(); if(temp == 0) { perror("temp file"); Exit(); } if((tfd = create(temp, ORDWR, 0600)) < 0){ perror(temp); Exit(); } Binit(&tb, tfd, OWRITE); } Bprint(&tb, "%s\n", argv[i]); *argv[i] = 0; } if(tfd >= 0){ Bflush(&tb); LSEEK(tfd, 0L, 0); parse("command line args", tfd, 1); remove(temp); } if (buf->current != buf->start) { buf->current--; insert(buf, 0); } symlook("MKFLAGS", S_VAR, (void *) stow(buf->start)); buf->current = buf->start; for(i = 0; argv[i]; i++){ if(*argv[i] == 0) continue; if(i) insert(buf, ' '); bufcpy(buf, argv[i], strlen(argv[i])); } insert(buf, 0); symlook("MKARGS", S_VAR, (void *) stow(buf->start)); freebuf(buf); if(f == files){ if(access(MKFILE, 4) == 0) parse(MKFILE, open(MKFILE, 0), 0); } else for(ff = files; ff < f; ff++) parse(*ff, open(*ff, 0), 0); if(DEBUG(D_PARSE)){ dumpw("default targets", target1); dumpr("rules", rules); dumpr("metarules", metarules); dumpv("variables"); } if(whatif){ insert(whatif, 0); timeinit(whatif->start); freebuf(whatif); } execinit(); /* skip assignment args */ while(*argv && (**argv == 0)) argv++; catchnotes(); if(*argv == 0){ if(target1) for(w = target1; w; w = w->next) mk(w->s); else { fprint(2, "mk: nothing to mk\n"); Exit(); } } else { if(sflag){ for(; *argv; argv++) if(**argv) mk(*argv); } else { Word *head, *tail, *t; /* fake a new rule with all the args as prereqs */ tail = 0; t = 0; for(; *argv; argv++) if(**argv){ if(tail == 0) tail = t = newword(*argv); else { t->next = newword(*argv); t = t->next; } } if(tail->next == 0) mk(tail->s); else { head = newword("command line arguments"); addrules(head, tail, strdup(""), VIR, mkinline, 0); mk(head->s); } } } if(uflag) prusage(); exits(0); } void badusage(void) { fprint(2, "Usage: mk [-f file] [-n] [-a] [-e] [-t] [-k] [-i] [-d[egp]] [targets ...]\n"); Exit(); } void * Malloc(int n) { register void *s; s = malloc(n); if(!s) { fprint(2, "mk: cannot alloc %d bytes\n", n); Exit(); } return(s); } void * Realloc(void *s, int n) { if(s) s = realloc(s, n); else s = malloc(n); if(!s) { fprint(2, "mk: cannot alloc %d bytes\n", n); Exit(); } return(s); } void regerror(char *s) { if(patrule) fprint(2, "mk: %s:%d: regular expression error; %s\n", patrule->file, patrule->line, s); else fprint(2, "mk: %s:%d: regular expression error; %s\n", infile, mkinline, s); Exit(); }