593 lines
8.8 KiB
C
593 lines
8.8 KiB
C
#define L 512
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#define N 7
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#define C 20
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#define MEM (16*2048)
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#define NF 10
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int ibuf[259];
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int obuf[259];
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char *file;
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char *filep;
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int nfiles;
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int nlines;
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int ntext;
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int *lspace;
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char *tspace;
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int cmp();
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int term();
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int mflg;
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char *outfil;
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char tabchar;
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int eargc;
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char **eargv;
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char fold[128] {
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0000,0001,0002,0003,0004,0005,0006,0007,
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0010,0011,0012,0013,0014,0015,0016,0017,
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0020,0021,0022,0023,0024,0025,0026,0027,
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0030,0031,0032,0033,0034,0035,0036,0037,
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0040,0041,0042,0043,0044,0045,0046,0047,
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0050,0051,0052,0053,0054,0055,0056,0057,
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0060,0061,0062,0063,0064,0065,0066,0067,
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0070,0071,0072,0073,0074,0075,0076,0077,
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0100,0101,0102,0103,0104,0105,0106,0107,
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0110,0111,0112,0113,0114,0115,0116,0117,
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0120,0121,0122,0123,0124,0125,0126,0127,
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0130,0131,0132,0133,0134,0134,0136,0137,
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0140,0101,0102,0103,0104,0105,0106,0107,
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0110,0111,0112,0113,0114,0115,0116,0117,
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0120,0121,0122,0123,0124,0125,0126,0127,
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0130,0131,0132,0173,0174,0175,0176,0177
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};
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char nofold[128];
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char dict[128] {
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1,1,1,1,1,1,1,1,1,0,0,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,
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1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,
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1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1
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};
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char nodict[128] { 1 };
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struct field {
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char *code;
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char *ignore;
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int nflg;
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int rflg;
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int bflg;
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char *m[2];
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char *n[2];
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} fields[NF];
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int proto[9] {
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&fold,
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&nodict,
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0,
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1,
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0,
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0,-1,
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0,0
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};
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int nfields;
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int error 1;
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main(argc, argv)
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char **argv;
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{
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register a, i;
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char *arg;
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register int *p;
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int *q;
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for(a=0; a<128; a++)
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nofold[a] = a;
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nodict[127] = 1;
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copyproto();
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eargv = argv;
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while (--argc > 0) {
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if(**++argv == '-') for(arg = *argv;;) {
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switch(*++arg) {
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case '\0':
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if(arg[-1] == '-')
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eargv[eargc++] = "-";
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break;
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case 'm':
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mflg++;
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continue;
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case 'o':
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if(--argc > 0)
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outfil = *++argv;
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continue;
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default:
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field(++*argv,1);
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break;
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}
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break;
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} else if (**argv == '+') {
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if(++nfields>=NF) {
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mess("Too many keys\n");
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exit(1);
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}
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copyproto();
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field(++*argv,0);
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} else
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eargv[eargc++] = *argv;
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}
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q = &fields[0];
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for(a=1; a<=nfields; a++) {
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p = &fields[a];
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for(i=0; i<5; i++) /*sensitive to sizeof(proto)*/
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if(p[i] != proto[i])
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goto next;
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for(i=0; i<5; i++)
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p[i] = q[i];
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next: ;
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}
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if(eargc == 0)
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eargv[eargc++] = "-";
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a = MEM;
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i = lspace = sbrk(0);
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while(brk(a) == -1)
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a =- 512;
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brk(a =- 512); /* for recursion */
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a =- i;
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nlines = ((a-L)>>1) & 077777;
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nlines =/ 5;
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ntext = nlines*8;
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tspace = lspace+nlines;
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file = "/usr/tmp/stmXaa";
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loop:
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filep = file;
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while(*filep != 'X')
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filep++;
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for(*filep = 'a';;(*filep)++) {
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if(stat(file, lspace) < 0) {
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a = creat(file, 0600);
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if(a >= 0)
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break;
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}
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if(*filep == 'z') {
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if(file[1] != 't') {
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file = "/tmp/stmXaa";
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goto loop;
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}
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mess("Cannot locate temp\n");
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exit(1);
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}
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}
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close(a);
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filep++;
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if ((signal(2, 1) & 01) == 0)
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signal(2, term);
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nfiles = eargc;
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if(!mflg) {
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ibuf[0] = -1;
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sort();
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close(0);
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}
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for(a = mflg?0:eargc; a+N < nfiles; a=+N) {
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newfile();
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merge(a, a+N);
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}
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if(a != nfiles) {
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oldfile();
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merge(a, nfiles);
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}
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error = 0;
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term();
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}
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sort()
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{
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register char *cp;
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register *lp, c;
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int done;
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int i;
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int f;
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done = 0;
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i = 0;
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do {
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cp = tspace;
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lp = lspace;
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while(lp < lspace+nlines && cp < tspace+ntext) {
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*lp++ = cp;
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while((*cp++ = c = getc(ibuf)) != '\n') {
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if(c >= 0) continue;
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cp--;
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close(ibuf[0]);
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if(i < eargc) {
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if((f = setfil(i++)) == 0)
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ibuf[0] = 0;
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else if(fopen(f, ibuf) < 0)
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cant(f);
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} else
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break;
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}
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if(c < 0) {
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done++;
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lp--;
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break;
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}
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}
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qsort(lspace, lp-lspace, 2, cmp);
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if(done == 0 || nfiles != eargc)
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newfile(); else
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oldfile();
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while(lp > lspace) {
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cp = *--lp;
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do
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putc(*cp, obuf);
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while(*cp++ != '\n');
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}
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fflush(obuf);
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close(obuf[0]);
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} while(done == 0);
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}
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struct merg
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{
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char l[L];
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int b[259];
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};
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merge(a, b)
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{
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register struct merg *p;
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register char *cp;
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register i;
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struct { int *ip;};
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int f;
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int j;
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p = lspace;
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j = 0;
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for(i=a; i<b; i++) {
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f = setfil(i);
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if(f == 0)
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p->b[0] = dup(0);
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else if(fopen(f, p->b) < 0)
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cant(f);
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ibuf[j] = p;
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if(!rline(p)) j++;
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p++;
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}
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i = j;
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qsort(ibuf, i, 2, cmp);
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if(i > 0) for(;;) {
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cp = ibuf[i-1];
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do
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putc(*cp, obuf);
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while(*cp++ != '\n');
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if(rline(ibuf[i-1])) {
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i--;
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if(i == 0)
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break;
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}
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cp = &ibuf[i];
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while (--cp.ip > ibuf && cmp(cp.ip, cp.ip-1) < 0) {
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p = *cp.ip;
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*cp.ip = *(cp.ip-1);
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*(cp.ip-1) = p;
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}
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}
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p = lspace;
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for(i=a; i<b; i++) {
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close(p->b[0]);
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p++;
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if(i >= eargc)
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close(creat(setfil(i)));
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}
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fflush(obuf);
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close(obuf[0]);
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}
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rline(mp)
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struct merg *mp;
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{
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register char *cp;
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register *bp, c;
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bp = mp->b;
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cp = mp->l;
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do {
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c = getc(bp);
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if(c < 0)
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return(1);
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*cp++ = c;
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} while(c != '\n');
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return(0);
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}
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newfile()
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{
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if(fcreat(setfil(nfiles), obuf) < 0) {
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mess("Can't create temp\n");
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term();
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}
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nfiles++;
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}
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char *
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setfil(i)
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{
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if(i < eargc)
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if(eargv[i][0] == '-' && eargv[i][1] == '\0')
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return(0);
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else
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return(eargv[i]);
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i =- eargc;
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filep[0] = i/26 + 'a';
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filep[1] = i%26 + 'a';
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return(file);
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}
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oldfile()
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{
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if(outfil) {
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if(fcreat(outfil, obuf) < 0) {
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mess("Can't create output\n");
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term();
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}
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} else
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obuf[0] = 1;
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}
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cant(f)
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{
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mess("Can't open ");
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mess(f);
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mess("\n");
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term();
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}
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term()
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{
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register i;
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if(nfiles == eargc)
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nfiles++;
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for(i=eargc; i<nfiles; i++)
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unlink(setfil(i));
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exit(error);
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}
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cmp(i, j)
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int *i, *j;
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{
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register char *pa, *pb;
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char *code, *ignore;
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int a, b;
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int k;
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char *la, *lb;
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register int sa;
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int sb;
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char *ipa, *ipb, *jpa, *jpb;
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struct field *fp;
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for(k = nfields>0; k<=nfields; k++) {
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fp = &fields[k];
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pa = *i;
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pb = *j;
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if(k) {
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la = skip(pa, fp, 1);
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pa = skip(pa, fp, 0);
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lb = skip(pb, fp, 1);
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pb = skip(pb, fp, 0);
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} else {
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la = -1;
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lb = -1;
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}
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if(fp->nflg) {
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while(blank(*pa))
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pa++;
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while(blank(*pb))
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pb++;
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sa = sb = fp->rflg;
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if(*pa == '-') {
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pa++;
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sa = -sa;
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}
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if(*pb == '-') {
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pb++;
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sb = -sb;
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}
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if(sa != sb)
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sa = 0;
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for(ipa = pa; ipa<la&&digit(*ipa); ipa++);
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for(ipb = pb; ipb<lb&&digit(*ipb); ipb++);
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jpa = ipa;
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jpb = ipb;
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a = 0;
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if(sa) while(ipa > pa && ipb > pb)
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if(b = *--ipb - *--ipa)
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a = b;
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while(ipa > pa)
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if(*--ipa != '0')
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return(sa ? -sa : sb);
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while(ipb > pb)
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if(*--ipb != '0')
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return(sa ? sa : sb);
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if(a) return(a*sa);
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if(*(pa=jpa) == '.')
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pa++;
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if(*(pb=jpb) == '.')
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pb++;
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while(pa<la && digit(*pa))
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if(pb<lb &&digit(*pb)) {
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if(a = *pb++ - *pa++)
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return(sa ? a*sa : sb);
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} else if(*pa++ != '0')
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return(sa ? -sa : sb);
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while(pb<lb && digit(*pb))
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if(*pb++ != '0')
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return(sa ? sa : sb);
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continue;
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}
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code = fp->code;
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ignore = fp->ignore;
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loop:
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while(*pa<0 || ignore[*pa])
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pa++;
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while(*pb<0 || ignore[*pb])
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pb++;
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if(pa>=la || *pa=='\n')
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if(pb<lb && *pb!='\n')
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return(fp->rflg);
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else continue;
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if(pb>=lb || *pb=='\n')
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return(-fp->rflg);
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if((sa = code[*pb++]-code[*pa++]) == 0)
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goto loop;
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return(sa*fp->rflg);
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}
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pa = *i;
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pb = *j;
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while(*pa != '\n') {
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if(*pa == *pb) {
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pa++;
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pb++;
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continue;
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}
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if(*pb == '\n')
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return(-1);
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return(*pb - *pa);
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}
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return(*pb != '\n');
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}
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skip(pp, fp, j)
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struct field *fp;
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char *pp;
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{
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register i;
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register char *p;
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p = pp;
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if( (i=fp->m[j]) < 0)
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return(-1);
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while(i-- > 0) {
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if(tabchar != 0) {
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while(*p != tabchar)
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if(*p != '\n')
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p++;
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else goto ret;
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p++;
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} else {
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while(blank(*p))
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p++;
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while(!blank(*p))
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if(*p != '\n')
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p++;
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else goto ret;
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}
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}
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if(fp->bflg)
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while(blank(*p))
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p++;
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i = fp->n[j];
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while(i-- > 0) {
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if(*p != '\n')
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p++;
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else goto ret;
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}
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ret:
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return(p);
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}
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digit(c)
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{
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return(c <= '9' && c >= '0');
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}
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mess(s)
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char *s;
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{
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while(*s)
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write(2, s++, 1);
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}
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copyproto()
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{
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register int i, *p, *q;
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p = proto;
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q = &fields[nfields];
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for(i=0; i<sizeof(proto)/2; i++)
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*q++ = *p++;
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}
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field(s,k)
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char *s;
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{
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register struct field *p;
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p = &fields[nfields];
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for(; *s!=0; s++) {
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switch(*s) {
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case '\0':
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return;
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case 'a':
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p->code = nofold;
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break;
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case 'b':
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p->bflg++;
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break;
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case 'd':
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p->ignore = dict;
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break;
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case 'n':
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p->nflg++;
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break;
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case 't':
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tabchar = *++s;
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if(tabchar == 0) s--;
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break;
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case 'r':
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p->rflg = -1;
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break;
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default:
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p->m[k] = number(&s);
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if(*s == '.')
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s++;
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p->n[k] = number(&s);
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s--;
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}
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}
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}
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number(ppa)
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char **ppa;
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{
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int n;
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register char *pa;
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pa = *ppa;
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n = 0;
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while(digit(*pa))
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n = n*10 + *pa++ - '0';
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*ppa = pa;
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return(n);
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}
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|
|
blank(c)
|
|
{
|
|
if(c==' ' || c=='\t')
|
|
return(1);
|
|
return(0);
|
|
}
|