1*4286235dSbostic /*- 2*4286235dSbostic * Copyright (c) 1993 The Regents of the University of California. 3*4286235dSbostic * All rights reserved. 4*4286235dSbostic * 5*4286235dSbostic * This code is derived from software contributed to Berkeley by 6*4286235dSbostic * Peter McIlroy. 7*4286235dSbostic * 8*4286235dSbostic * %sccs.include.redist.c% 9*4286235dSbostic */ 10*4286235dSbostic 11*4286235dSbostic #ifndef lint 12*4286235dSbostic char copyright[] = 13*4286235dSbostic "@(#) Copyright (c) 1993 The Regents of the University of California.\n\ 14*4286235dSbostic All rights reserved.\n"; 15*4286235dSbostic #endif /* not lint */ 16*4286235dSbostic 17*4286235dSbostic #ifndef lint 18*4286235dSbostic static char sccsid[] = "@(#)sort.c 5.1 (Berkeley) 06/01/93"; 19*4286235dSbostic #endif /* not lint */ 20*4286235dSbostic 21*4286235dSbostic /* Sort sorts a file using an optional user-defined key. 22*4286235dSbostic * Sort uses radix sort for internal sorting, and allows 23*4286235dSbostic * a choice of merge sort and radix sort for external sorting. 24*4286235dSbostic */ 25*4286235dSbostic 26*4286235dSbostic #include "sort.h" 27*4286235dSbostic #include "fsort.h" 28*4286235dSbostic #include "pathnames.h" 29*4286235dSbostic 30*4286235dSbostic #include <paths.h> 31*4286235dSbostic #include <signal.h> 32*4286235dSbostic #include <stdlib.h> 33*4286235dSbostic #include <string.h> 34*4286235dSbostic #include <unistd.h> 35*4286235dSbostic 36*4286235dSbostic int REC_D = '\n'; 37*4286235dSbostic u_char d_mask[NBINS]; /* flags for rec_d, field_d, <blank> */ 38*4286235dSbostic /* 39*4286235dSbostic * weight tables. Gweights is one of ascii, Rascii.. 40*4286235dSbostic * modified to weight rec_d = 0 (or 255) 41*4286235dSbostic */ 42*4286235dSbostic extern u_char gweights[NBINS]; 43*4286235dSbostic u_char ascii[NBINS], Rascii[NBINS], RFtable[NBINS], Ftable[NBINS]; 44*4286235dSbostic /* 45*4286235dSbostic * masks of ignored characters. Alltable is 256 ones 46*4286235dSbostic */ 47*4286235dSbostic u_char dtable[NBINS], itable[NBINS], alltable[NBINS]; 48*4286235dSbostic int SINGL_FLD = 0, SEP_FLAG = 0, UNIQUE = 0; 49*4286235dSbostic struct coldesc clist[(ND+1)*2]; 50*4286235dSbostic int ncols = 0; 51*4286235dSbostic extern struct coldesc clist[(ND+1)*2]; 52*4286235dSbostic extern int ncols; 53*4286235dSbostic 54*4286235dSbostic char devstdin[] = _PATH_STDIN; 55*4286235dSbostic char toutpath[_POSIX_PATH_MAX]; 56*4286235dSbostic 57*4286235dSbostic static void cleanup __P((void)); 58*4286235dSbostic static void onsig __P((int)); 59*4286235dSbostic static void usage __P((char *)); 60*4286235dSbostic 61*4286235dSbostic int 62*4286235dSbostic main(argc, argv) 63*4286235dSbostic int argc; 64*4286235dSbostic char *argv[]; 65*4286235dSbostic { 66*4286235dSbostic extern int optind; 67*4286235dSbostic extern char *optarg; 68*4286235dSbostic int (*get)(); 69*4286235dSbostic int ch, i, stdinflag = 0, tmp = 0; 70*4286235dSbostic char cflag = 0, mflag = 0, nflag = 0; 71*4286235dSbostic char *outfile, *outpath = 0; 72*4286235dSbostic struct field fldtab[ND+2], *ftpos; 73*4286235dSbostic union f_handle filelist; 74*4286235dSbostic FILE *outfd; 75*4286235dSbostic memset(fldtab, 0, (ND+2)*sizeof(struct field)); 76*4286235dSbostic memset(d_mask, 0, NBINS); 77*4286235dSbostic d_mask[REC_D = '\n'] = REC_D_F; 78*4286235dSbostic SINGL_FLD = SEP_FLAG = 0; 79*4286235dSbostic d_mask['\t'] = d_mask[' '] = BLANK | FLD_D; 80*4286235dSbostic ftpos = fldtab; 81*4286235dSbostic fixit(&argc, argv); 82*4286235dSbostic while ((ch = getopt(argc, argv, "bcdfik:mHno:rt:T:ux")) != EOF) { 83*4286235dSbostic switch (ch) { 84*4286235dSbostic case 'b': fldtab->flags |= BI | BT; 85*4286235dSbostic break; 86*4286235dSbostic case 'd': 87*4286235dSbostic case 'i': 88*4286235dSbostic case 'f': 89*4286235dSbostic case 'r': tmp |= optval(ch, 0); 90*4286235dSbostic if (tmp & R && tmp & F) 91*4286235dSbostic fldtab->weights = RFtable; 92*4286235dSbostic else if (tmp & F) 93*4286235dSbostic fldtab->weights = Ftable; 94*4286235dSbostic else if(tmp & R) 95*4286235dSbostic fldtab->weights = Rascii; 96*4286235dSbostic fldtab->flags |= tmp; 97*4286235dSbostic break; 98*4286235dSbostic case 'o': 99*4286235dSbostic outpath = optarg; 100*4286235dSbostic break; 101*4286235dSbostic case 'n': 102*4286235dSbostic nflag = 1; 103*4286235dSbostic setfield("1n", ++ftpos, fldtab->flags&(~R)); 104*4286235dSbostic break; 105*4286235dSbostic case 'k': 106*4286235dSbostic setfield(optarg, ++ftpos, fldtab->flags); 107*4286235dSbostic break; 108*4286235dSbostic case 't': 109*4286235dSbostic if (SEP_FLAG) 110*4286235dSbostic usage("multiple field delimiters"); 111*4286235dSbostic SEP_FLAG = 1; 112*4286235dSbostic d_mask[' '] &= ~FLD_D; 113*4286235dSbostic d_mask['\t'] &= ~FLD_D; 114*4286235dSbostic d_mask[*optarg] |= FLD_D; 115*4286235dSbostic if (d_mask[*optarg] & REC_D_F) 116*4286235dSbostic err(2, "record/field delimiter clash"); 117*4286235dSbostic break; 118*4286235dSbostic case 'T': 119*4286235dSbostic if (REC_D != '\n') 120*4286235dSbostic usage("multiple record delimiters"); 121*4286235dSbostic if ('\n' == (REC_D = *optarg)) 122*4286235dSbostic break; 123*4286235dSbostic d_mask['\n'] = d_mask[' ']; 124*4286235dSbostic d_mask[REC_D] = REC_D_F; 125*4286235dSbostic break; 126*4286235dSbostic case 'u': 127*4286235dSbostic UNIQUE = 1; 128*4286235dSbostic break; 129*4286235dSbostic case 'c': 130*4286235dSbostic cflag = 1; 131*4286235dSbostic break; 132*4286235dSbostic case 'm': 133*4286235dSbostic mflag = 1; 134*4286235dSbostic break; 135*4286235dSbostic case 'H': 136*4286235dSbostic PANIC = 0; 137*4286235dSbostic break; 138*4286235dSbostic case '?': 139*4286235dSbostic default: usage(""); 140*4286235dSbostic } 141*4286235dSbostic } 142*4286235dSbostic if (cflag && argc > optind+1) 143*4286235dSbostic errx(2, "too many input files for -c option"); 144*4286235dSbostic if (argc - 2 > optind && !strcmp(argv[argc-2], "-o")) { 145*4286235dSbostic outpath = argv[argc-1]; 146*4286235dSbostic argc -= 2; 147*4286235dSbostic } 148*4286235dSbostic if (mflag && argc - optind > (MAXFCT - (16+1))*16) 149*4286235dSbostic errx(2, "too many input files for -m option"); 150*4286235dSbostic for (i = optind; i < argc; i++) { 151*4286235dSbostic /* allow one occurrence of /dev/stdin */ 152*4286235dSbostic if (!strcmp(argv[i], "-") || !strcmp(argv[i], devstdin)) { 153*4286235dSbostic if (stdinflag) 154*4286235dSbostic warnx("ignoring extra \"%s\" in file list", 155*4286235dSbostic argv[i]); 156*4286235dSbostic else { 157*4286235dSbostic stdinflag = 1; 158*4286235dSbostic argv[i] = devstdin; 159*4286235dSbostic } 160*4286235dSbostic } else if (ch = access(argv[i], R_OK)) 161*4286235dSbostic err(2, "%s", argv[i]); 162*4286235dSbostic } 163*4286235dSbostic if (!(fldtab->flags & (I|D) || fldtab[1].icol.num)) { 164*4286235dSbostic SINGL_FLD = 1; 165*4286235dSbostic fldtab[0].icol.num = 1; 166*4286235dSbostic } else { 167*4286235dSbostic if (!fldtab[1].icol.num) { 168*4286235dSbostic fldtab[0].flags &= ~(BI|BT); 169*4286235dSbostic setfield("1", ++ftpos, fldtab->flags); 170*4286235dSbostic } 171*4286235dSbostic if (nflag) 172*4286235dSbostic fldtab[1].flags |= fldtab->flags; 173*4286235dSbostic fldreset(fldtab); 174*4286235dSbostic fldtab[0].flags &= ~F; 175*4286235dSbostic } 176*4286235dSbostic settables(fldtab[0].flags); 177*4286235dSbostic num_init(); 178*4286235dSbostic fldtab->weights = gweights; 179*4286235dSbostic if (optind == argc) 180*4286235dSbostic argv[--optind] = devstdin; 181*4286235dSbostic filelist.names = argv+optind; 182*4286235dSbostic if (SINGL_FLD) 183*4286235dSbostic get = makeline; 184*4286235dSbostic else 185*4286235dSbostic get = makekey; 186*4286235dSbostic if (cflag) { 187*4286235dSbostic order(filelist, get, fldtab); 188*4286235dSbostic /* NOT REACHED */ 189*4286235dSbostic } 190*4286235dSbostic if (!outpath) { 191*4286235dSbostic (void)snprintf(toutpath, 192*4286235dSbostic sizeof(toutpath), "%sstdout", _PATH_DEV); 193*4286235dSbostic outfile = outpath = toutpath; 194*4286235dSbostic } else if (!(ch = access(outpath, 0)) && 195*4286235dSbostic strncmp(_PATH_DEV, outpath, 5)) { 196*4286235dSbostic struct sigaction act = {0, SIG_BLOCK, 6}; 197*4286235dSbostic int sigtable[] = {SIGHUP, SIGINT, SIGPIPE, SIGXCPU, SIGXFSZ, 198*4286235dSbostic SIGVTALRM, SIGPROF, 0}; 199*4286235dSbostic errno = 0; 200*4286235dSbostic if (access(outpath, W_OK)) 201*4286235dSbostic err(2, "%s", outpath); 202*4286235dSbostic act.sa_handler = cleanup; 203*4286235dSbostic (void)snprintf(toutpath, sizeof(toutpath), "%sXXXX", outpath); 204*4286235dSbostic outfile = mktemp(toutpath); 205*4286235dSbostic if (!outfile) 206*4286235dSbostic err(2, "%s", toutpath); 207*4286235dSbostic (void)atexit(cleanup); 208*4286235dSbostic for (i = 0; sigtable[i]; ++i) /* always unlink toutpath */ 209*4286235dSbostic sigaction(sigtable[i], &act, 0); 210*4286235dSbostic } else outfile = outpath; 211*4286235dSbostic if (!(outfd = fopen(outfile, "w"))) 212*4286235dSbostic err(2, "%s", outfile); 213*4286235dSbostic if (mflag) 214*4286235dSbostic fmerge(-1, filelist, argc-optind, get, outfd, putline, fldtab); 215*4286235dSbostic else 216*4286235dSbostic fsort(-1, 0, filelist, argc-optind, outfd, fldtab); 217*4286235dSbostic if (outfile != outpath) { 218*4286235dSbostic if (access(outfile, 0)) 219*4286235dSbostic err(2, "%s", outfile); 220*4286235dSbostic (void)unlink(outpath); 221*4286235dSbostic if (link(outfile, outpath)) 222*4286235dSbostic err(2, "cannot link %s: output left in %s", 223*4286235dSbostic outpath, outfile); 224*4286235dSbostic (void)unlink(outfile); 225*4286235dSbostic } 226*4286235dSbostic exit(0); 227*4286235dSbostic } 228*4286235dSbostic 229*4286235dSbostic static void 230*4286235dSbostic onsig(s) 231*4286235dSbostic int s; 232*4286235dSbostic { 233*4286235dSbostic cleanup(); 234*4286235dSbostic exit(2); /* return 2 on error/interrupt */ 235*4286235dSbostic } 236*4286235dSbostic 237*4286235dSbostic static void 238*4286235dSbostic cleanup() 239*4286235dSbostic { 240*4286235dSbostic if (toutpath[0]) 241*4286235dSbostic (void)unlink(toutpath); 242*4286235dSbostic } 243*4286235dSbostic 244*4286235dSbostic static void 245*4286235dSbostic usage(msg) 246*4286235dSbostic char *msg; 247*4286235dSbostic { 248*4286235dSbostic if (msg) 249*4286235dSbostic (void)fprintf(stderr, "sort: %s\n", msg); 250*4286235dSbostic (void)fprintf(stderr, "usage: [-o output] [-cmubdfinr] [-t char] "); 251*4286235dSbostic (void)fprintf(stderr, "[-T char] [-k keydef] ... [files]\n"); 252*4286235dSbostic exit(2); 253*4286235dSbostic } 254