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1.1 ! root 1: /* Copyright (c) 1981 Regents of the University of California */ ! 2: static char *sccsid = "@(#)ex_io.c 7.6 7/30/83"; ! 3: #include "ex.h" ! 4: #include "ex_argv.h" ! 5: #include "ex_temp.h" ! 6: #include "ex_tty.h" ! 7: #include "ex_vis.h" ! 8: ! 9: /* ! 10: * File input/output, source, preserve and recover ! 11: */ ! 12: ! 13: /* ! 14: * Following remember where . was in the previous file for return ! 15: * on file switching. ! 16: */ ! 17: int altdot; ! 18: int oldadot; ! 19: bool wasalt; ! 20: short isalt; ! 21: ! 22: long cntch; /* Count of characters on unit io */ ! 23: #ifndef VMUNIX ! 24: short cntln; /* Count of lines " */ ! 25: #else ! 26: int cntln; ! 27: #endif ! 28: long cntnull; /* Count of nulls " */ ! 29: long cntodd; /* Count of non-ascii characters " */ ! 30: ! 31: /* ! 32: * Parse file name for command encoded by comm. ! 33: * If comm is E then command is doomed and we are ! 34: * parsing just so user won't have to retype the name. ! 35: */ ! 36: filename(comm) ! 37: int comm; ! 38: { ! 39: register int c = comm, d; ! 40: register int i; ! 41: ! 42: d = getchar(); ! 43: if (endcmd(d)) { ! 44: if (savedfile[0] == 0 && comm != 'f') ! 45: error("No file|No current filename"); ! 46: CP(file, savedfile); ! 47: wasalt = (isalt > 0) ? isalt-1 : 0; ! 48: isalt = 0; ! 49: oldadot = altdot; ! 50: if (c == 'e' || c == 'E') ! 51: altdot = lineDOT(); ! 52: if (d == EOF) ! 53: ungetchar(d); ! 54: } else { ! 55: ungetchar(d); ! 56: getone(); ! 57: eol(); ! 58: if (savedfile[0] == 0 && c != 'E' && c != 'e') { ! 59: c = 'e'; ! 60: edited = 0; ! 61: } ! 62: wasalt = strcmp(file, altfile) == 0; ! 63: oldadot = altdot; ! 64: switch (c) { ! 65: ! 66: case 'f': ! 67: edited = 0; ! 68: /* fall into ... */ ! 69: ! 70: case 'e': ! 71: if (savedfile[0]) { ! 72: altdot = lineDOT(); ! 73: CP(altfile, savedfile); ! 74: } ! 75: CP(savedfile, file); ! 76: break; ! 77: ! 78: default: ! 79: if (file[0]) { ! 80: if (c != 'E') ! 81: altdot = lineDOT(); ! 82: CP(altfile, file); ! 83: } ! 84: break; ! 85: } ! 86: } ! 87: if (hush && comm != 'f' || comm == 'E') ! 88: return; ! 89: if (file[0] != 0) { ! 90: lprintf("\"%s\"", file); ! 91: if (comm == 'f') { ! 92: if (value(READONLY)) ! 93: printf(" [Read only]"); ! 94: if (!edited) ! 95: printf(" [Not edited]"); ! 96: if (tchng) ! 97: printf(" [Modified]"); ! 98: } ! 99: flush(); ! 100: } else ! 101: printf("No file "); ! 102: if (comm == 'f') { ! 103: if (!(i = lineDOL())) ! 104: i++; ! 105: printf(" line %d of %d --%ld%%--", lineDOT(), lineDOL(), ! 106: (long) 100 * lineDOT() / i); ! 107: } ! 108: } ! 109: ! 110: /* ! 111: * Get the argument words for a command into genbuf ! 112: * expanding # and %. ! 113: */ ! 114: getargs() ! 115: { ! 116: register int c; ! 117: register char *cp, *fp; ! 118: static char fpatbuf[32]; /* hence limit on :next +/pat */ ! 119: ! 120: pastwh(); ! 121: if (peekchar() == '+') { ! 122: for (cp = fpatbuf;;) { ! 123: c = *cp++ = getchar(); ! 124: if (cp >= &fpatbuf[sizeof(fpatbuf)]) ! 125: error("Pattern too long"); ! 126: if (c == '\\' && isspace(peekchar())) ! 127: c = getchar(); ! 128: if (c == EOF || isspace(c)) { ! 129: ungetchar(c); ! 130: *--cp = 0; ! 131: firstpat = &fpatbuf[1]; ! 132: break; ! 133: } ! 134: } ! 135: } ! 136: if (skipend()) ! 137: return (0); ! 138: CP(genbuf, "echo "); cp = &genbuf[5]; ! 139: for (;;) { ! 140: c = getchar(); ! 141: if (endcmd(c)) { ! 142: ungetchar(c); ! 143: break; ! 144: } ! 145: switch (c) { ! 146: ! 147: case '\\': ! 148: if (any(peekchar(), "#%|")) ! 149: c = getchar(); ! 150: /* fall into... */ ! 151: ! 152: default: ! 153: if (cp > &genbuf[LBSIZE - 2]) ! 154: flong: ! 155: error("Argument buffer overflow"); ! 156: *cp++ = c; ! 157: break; ! 158: ! 159: case '#': ! 160: fp = altfile; ! 161: if (*fp == 0) ! 162: error("No alternate filename@to substitute for #"); ! 163: goto filexp; ! 164: ! 165: case '%': ! 166: fp = savedfile; ! 167: if (*fp == 0) ! 168: error("No current filename@to substitute for %%"); ! 169: filexp: ! 170: while (*fp) { ! 171: if (cp > &genbuf[LBSIZE - 2]) ! 172: goto flong; ! 173: *cp++ = *fp++; ! 174: } ! 175: break; ! 176: } ! 177: } ! 178: *cp = 0; ! 179: return (1); ! 180: } ! 181: ! 182: /* ! 183: * Glob the argument words in genbuf, or if no globbing ! 184: * is implied, just split them up directly. ! 185: */ ! 186: glob(gp) ! 187: struct glob *gp; ! 188: { ! 189: int pvec[2]; ! 190: register char **argv = gp->argv; ! 191: register char *cp = gp->argspac; ! 192: register int c; ! 193: char ch; ! 194: int nleft = NCARGS; ! 195: ! 196: gp->argc0 = 0; ! 197: if (gscan() == 0) { ! 198: register char *v = genbuf + 5; /* strlen("echo ") */ ! 199: ! 200: for (;;) { ! 201: while (isspace(*v)) ! 202: v++; ! 203: if (!*v) ! 204: break; ! 205: *argv++ = cp; ! 206: while (*v && !isspace(*v)) ! 207: *cp++ = *v++; ! 208: *cp++ = 0; ! 209: gp->argc0++; ! 210: } ! 211: *argv = 0; ! 212: return; ! 213: } ! 214: if (pipe(pvec) < 0) ! 215: error("Can't make pipe to glob"); ! 216: pid = fork(); ! 217: io = pvec[0]; ! 218: if (pid < 0) { ! 219: close(pvec[1]); ! 220: error("Can't fork to do glob"); ! 221: } ! 222: if (pid == 0) { ! 223: int oerrno; ! 224: ! 225: close(1); ! 226: dup(pvec[1]); ! 227: close(pvec[0]); ! 228: close(2); /* so errors don't mess up the screen */ ! 229: open("/dev/null", 1); ! 230: execl(svalue(SHELL), "sh", "-c", genbuf, 0); ! 231: oerrno = errno; close(1); dup(2); errno = oerrno; ! 232: filioerr(svalue(SHELL)); ! 233: } ! 234: close(pvec[1]); ! 235: do { ! 236: *argv = cp; ! 237: for (;;) { ! 238: if (read(io, &ch, 1) != 1) { ! 239: close(io); ! 240: c = -1; ! 241: } else ! 242: c = ch & TRIM; ! 243: if (c <= 0 || isspace(c)) ! 244: break; ! 245: *cp++ = c; ! 246: if (--nleft <= 0) ! 247: error("Arg list too long"); ! 248: } ! 249: if (cp != *argv) { ! 250: --nleft; ! 251: *cp++ = 0; ! 252: gp->argc0++; ! 253: if (gp->argc0 >= NARGS) ! 254: error("Arg list too long"); ! 255: argv++; ! 256: } ! 257: } while (c >= 0); ! 258: waitfor(); ! 259: if (gp->argc0 == 0) ! 260: error("No match"); ! 261: } ! 262: ! 263: /* ! 264: * Scan genbuf for shell metacharacters. ! 265: * Set is union of v7 shell and csh metas. ! 266: */ ! 267: gscan() ! 268: { ! 269: register char *cp; ! 270: ! 271: for (cp = genbuf; *cp; cp++) ! 272: if (any(*cp, "~{[*?$`'\"\\")) ! 273: return (1); ! 274: return (0); ! 275: } ! 276: ! 277: /* ! 278: * Parse one filename into file. ! 279: */ ! 280: struct glob G; ! 281: getone() ! 282: { ! 283: register char *str; ! 284: ! 285: if (getargs() == 0) ! 286: error("Missing filename"); ! 287: glob(&G); ! 288: if (G.argc0 > 1) ! 289: error("Ambiguous|Too many file names"); ! 290: str = G.argv[G.argc0 - 1]; ! 291: if (strlen(str) > FNSIZE - 4) ! 292: error("Filename too long"); ! 293: samef: ! 294: CP(file, str); ! 295: } ! 296: ! 297: /* ! 298: * Read a file from the world. ! 299: * C is command, 'e' if this really an edit (or a recover). ! 300: */ ! 301: rop(c) ! 302: int c; ! 303: { ! 304: register int i; ! 305: struct stat stbuf; ! 306: short magic; ! 307: static int ovro; /* old value(READONLY) */ ! 308: static int denied; /* 1 if READONLY was set due to file permissions */ ! 309: ! 310: io = open(file, 0); ! 311: if (io < 0) { ! 312: if (c == 'e' && errno == ENOENT) { ! 313: edited++; ! 314: /* ! 315: * If the user just did "ex foo" he is probably ! 316: * creating a new file. Don't be an error, since ! 317: * this is ugly, and it screws up the + option. ! 318: */ ! 319: if (!seenprompt) { ! 320: printf(" [New file]"); ! 321: noonl(); ! 322: return; ! 323: } ! 324: } ! 325: syserror(); ! 326: } ! 327: if (fstat(io, &stbuf)) ! 328: syserror(); ! 329: switch (stbuf.st_mode & S_IFMT) { ! 330: ! 331: case S_IFBLK: ! 332: error(" Block special file"); ! 333: ! 334: case S_IFCHR: ! 335: if (isatty(io)) ! 336: error(" Teletype"); ! 337: if (samei(&stbuf, "/dev/null")) ! 338: break; ! 339: error(" Character special file"); ! 340: ! 341: case S_IFDIR: ! 342: error(" Directory"); ! 343: ! 344: case S_IFREG: ! 345: #ifdef CRYPT ! 346: if (xflag) ! 347: break; ! 348: #endif ! 349: i = read(io, (char *) &magic, sizeof(magic)); ! 350: lseek(io, 0l, 0); ! 351: if (i != sizeof(magic)) ! 352: break; ! 353: switch (magic) { ! 354: ! 355: case 0405: /* data overlay on exec */ ! 356: case 0407: /* unshared */ ! 357: case 0410: /* shared text */ ! 358: case 0411: /* separate I/D */ ! 359: case 0413: /* VM/Unix demand paged */ ! 360: case 0430: /* PDP-11 Overlay shared */ ! 361: case 0431: /* PDP-11 Overlay sep I/D */ ! 362: error(" Executable"); ! 363: ! 364: /* ! 365: * We do not forbid the editing of portable archives ! 366: * because it is reasonable to edit them, especially ! 367: * if they are archives of text files. This is ! 368: * especially useful if you archive source files together ! 369: * and copy them to another system with ~%take, since ! 370: * the files sometimes show up munged and must be fixed. ! 371: */ ! 372: case 0177545: ! 373: case 0177555: ! 374: error(" Archive"); ! 375: ! 376: default: ! 377: #ifdef mbb ! 378: /* C/70 has a 10 bit byte */ ! 379: if (magic & 03401600) ! 380: #else ! 381: /* Everybody else has an 8 bit byte */ ! 382: if (magic & 0100200) ! 383: #endif ! 384: error(" Non-ascii file"); ! 385: break; ! 386: } ! 387: } ! 388: if (c != 'r') { ! 389: if (value(READONLY) && denied) { ! 390: value(READONLY) = ovro; ! 391: denied = 0; ! 392: } ! 393: if ((stbuf.st_mode & 0222) == 0 || access(file, 2) < 0) { ! 394: ovro = value(READONLY); ! 395: denied = 1; ! 396: value(READONLY) = 1; ! 397: } ! 398: } ! 399: if (value(READONLY)) { ! 400: printf(" [Read only]"); ! 401: flush(); ! 402: } ! 403: if (c == 'r') ! 404: setdot(); ! 405: else ! 406: setall(); ! 407: if (FIXUNDO && inopen && c == 'r') ! 408: undap1 = undap2 = dot + 1; ! 409: rop2(); ! 410: rop3(c); ! 411: } ! 412: ! 413: rop2() ! 414: { ! 415: line *first, *last, *a; ! 416: ! 417: deletenone(); ! 418: clrstats(); ! 419: first = addr2 + 1; ! 420: ignore(append(getfile, addr2)); ! 421: last = dot; ! 422: #ifdef SUICIDE /* and it wasnt even an option! */ ! 423: for (a=first; a<=last; a++) { ! 424: if (a==first+5 && last-first > 10) ! 425: a = last - 4; ! 426: getline(*a); ! 427: checkmodeline(linebuf); ! 428: } ! 429: #endif ! 430: } ! 431: ! 432: rop3(c) ! 433: int c; ! 434: { ! 435: ! 436: if (iostats() == 0 && c == 'e') ! 437: edited++; ! 438: if (c == 'e') { ! 439: if (wasalt || firstpat) { ! 440: register line *addr = zero + oldadot; ! 441: ! 442: if (addr > dol) ! 443: addr = dol; ! 444: if (firstpat) { ! 445: globp = (*firstpat) ? firstpat : "$"; ! 446: commands(1,1); ! 447: firstpat = 0; ! 448: } else if (addr >= one) { ! 449: if (inopen) ! 450: dot = addr; ! 451: markpr(addr); ! 452: } else ! 453: goto other; ! 454: } else ! 455: other: ! 456: if (dol > zero) { ! 457: if (inopen) ! 458: dot = one; ! 459: markpr(one); ! 460: } ! 461: if(FIXUNDO) ! 462: undkind = UNDNONE; ! 463: if (inopen) { ! 464: vcline = 0; ! 465: vreplace(0, LINES, lineDOL()); ! 466: } ! 467: } ! 468: } ! 469: ! 470: /* ! 471: * Are these two really the same inode? ! 472: */ ! 473: samei(sp, cp) ! 474: struct stat *sp; ! 475: char *cp; ! 476: { ! 477: struct stat stb; ! 478: ! 479: if (stat(cp, &stb) < 0 || sp->st_dev != stb.st_dev) ! 480: return (0); ! 481: return (sp->st_ino == stb.st_ino); ! 482: } ! 483: ! 484: /* Returns from edited() */ ! 485: #define EDF 0 /* Edited file */ ! 486: #define NOTEDF -1 /* Not edited file */ ! 487: #define PARTBUF 1 /* Write of partial buffer to Edited file */ ! 488: ! 489: /* ! 490: * Write a file. ! 491: */ ! 492: wop(dofname) ! 493: bool dofname; /* if 1 call filename, else use savedfile */ ! 494: { ! 495: register int c, exclam, nonexist; ! 496: line *saddr1, *saddr2; ! 497: struct stat stbuf; ! 498: ! 499: c = 0; ! 500: exclam = 0; ! 501: if (dofname) { ! 502: if (peekchar() == '!') ! 503: exclam++, ignchar(); ! 504: ignore(skipwh()); ! 505: while (peekchar() == '>') ! 506: ignchar(), c++, ignore(skipwh()); ! 507: if (c != 0 && c != 2) ! 508: error("Write forms are 'w' and 'w>>'"); ! 509: filename('w'); ! 510: } else { ! 511: if (savedfile[0] == 0) ! 512: error("No file|No current filename"); ! 513: saddr1=addr1; ! 514: saddr2=addr2; ! 515: addr1=one; ! 516: addr2=dol; ! 517: CP(file, savedfile); ! 518: if (inopen) { ! 519: vclrech(0); ! 520: splitw++; ! 521: } ! 522: lprintf("\"%s\"", file); ! 523: } ! 524: nonexist = stat(file, &stbuf); ! 525: switch (c) { ! 526: ! 527: case 0: ! 528: if (!exclam && (!value(WRITEANY) || value(READONLY))) ! 529: switch (edfile()) { ! 530: ! 531: case NOTEDF: ! 532: if (nonexist) ! 533: break; ! 534: if ((stbuf.st_mode & S_IFMT) == S_IFCHR) { ! 535: if (samei(&stbuf, "/dev/null")) ! 536: break; ! 537: if (samei(&stbuf, "/dev/tty")) ! 538: break; ! 539: } ! 540: io = open(file, 1); ! 541: if (io < 0) ! 542: syserror(); ! 543: if (!isatty(io)) ! 544: serror(" File exists| File exists - use \"w! %s\" to overwrite", file); ! 545: close(io); ! 546: break; ! 547: ! 548: case EDF: ! 549: if (value(READONLY)) ! 550: error(" File is read only"); ! 551: break; ! 552: ! 553: case PARTBUF: ! 554: if (value(READONLY)) ! 555: error(" File is read only"); ! 556: error(" Use \"w!\" to write partial buffer"); ! 557: } ! 558: cre: ! 559: /* ! 560: synctmp(); ! 561: */ ! 562: #ifdef V6 ! 563: io = creat(file, 0644); ! 564: #else ! 565: io = creat(file, 0666); ! 566: #endif ! 567: if (io < 0) ! 568: syserror(); ! 569: writing = 1; ! 570: if (hush == 0) ! 571: if (nonexist) ! 572: printf(" [New file]"); ! 573: else if (value(WRITEANY) && edfile() != EDF) ! 574: printf(" [Existing file]"); ! 575: break; ! 576: ! 577: case 2: ! 578: io = open(file, 1); ! 579: if (io < 0) { ! 580: if (exclam || value(WRITEANY)) ! 581: goto cre; ! 582: syserror(); ! 583: } ! 584: lseek(io, 0l, 2); ! 585: break; ! 586: } ! 587: putfile(0); ! 588: ignore(iostats()); ! 589: if (c != 2 && addr1 == one && addr2 == dol) { ! 590: if (eq(file, savedfile)) ! 591: edited = 1; ! 592: sync(); ! 593: } ! 594: if (!dofname) { ! 595: addr1 = saddr1; ! 596: addr2 = saddr2; ! 597: } ! 598: writing = 0; ! 599: } ! 600: ! 601: /* ! 602: * Is file the edited file? ! 603: * Work here is that it is not considered edited ! 604: * if this is a partial buffer, and distinguish ! 605: * all cases. ! 606: */ ! 607: edfile() ! 608: { ! 609: ! 610: if (!edited || !eq(file, savedfile)) ! 611: return (NOTEDF); ! 612: return (addr1 == one && addr2 == dol ? EDF : PARTBUF); ! 613: } ! 614: ! 615: /* ! 616: * Extract the next line from the io stream. ! 617: */ ! 618: char *nextip; ! 619: ! 620: getfile() ! 621: { ! 622: register short c; ! 623: register char *lp, *fp; ! 624: ! 625: lp = linebuf; ! 626: fp = nextip; ! 627: do { ! 628: if (--ninbuf < 0) { ! 629: ninbuf = read(io, genbuf, LBSIZE) - 1; ! 630: if (ninbuf < 0) { ! 631: if (lp != linebuf) { ! 632: lp++; ! 633: printf(" [Incomplete last line]"); ! 634: break; ! 635: } ! 636: return (EOF); ! 637: } ! 638: #ifdef CRYPT ! 639: fp = genbuf; ! 640: while(fp < &genbuf[ninbuf]) { ! 641: if (*fp++ & 0200) { ! 642: if (kflag) ! 643: crblock(perm, genbuf, ninbuf+1, ! 644: cntch); ! 645: break; ! 646: } ! 647: } ! 648: #endif ! 649: fp = genbuf; ! 650: cntch += ninbuf+1; ! 651: } ! 652: if (lp >= &linebuf[LBSIZE]) { ! 653: error(" Line too long"); ! 654: } ! 655: c = *fp++; ! 656: if (c == 0) { ! 657: cntnull++; ! 658: continue; ! 659: } ! 660: if (c & QUOTE) { ! 661: cntodd++; ! 662: c &= TRIM; ! 663: if (c == 0) ! 664: continue; ! 665: } ! 666: *lp++ = c; ! 667: } while (c != '\n'); ! 668: *--lp = 0; ! 669: nextip = fp; ! 670: cntln++; ! 671: return (0); ! 672: } ! 673: ! 674: /* ! 675: * Write a range onto the io stream. ! 676: */ ! 677: putfile(isfilter) ! 678: int isfilter; ! 679: { ! 680: line *a1; ! 681: register char *fp, *lp; ! 682: register int nib; ! 683: ! 684: a1 = addr1; ! 685: clrstats(); ! 686: cntln = addr2 - a1 + 1; ! 687: if (cntln == 0) ! 688: return; ! 689: nib = BUFSIZ; ! 690: fp = genbuf; ! 691: do { ! 692: getline(*a1++); ! 693: lp = linebuf; ! 694: for (;;) { ! 695: if (--nib < 0) { ! 696: nib = fp - genbuf; ! 697: #ifdef CRYPT ! 698: if(kflag && !isfilter) ! 699: crblock(perm, genbuf, nib, cntch); ! 700: #endif ! 701: if (write(io, genbuf, nib) != nib) { ! 702: wrerror(); ! 703: } ! 704: cntch += nib; ! 705: nib = BUFSIZ - 1; ! 706: fp = genbuf; ! 707: } ! 708: if ((*fp++ = *lp++) == 0) { ! 709: fp[-1] = '\n'; ! 710: break; ! 711: } ! 712: } ! 713: } while (a1 <= addr2); ! 714: nib = fp - genbuf; ! 715: #ifdef CRYPT ! 716: if(kflag && !isfilter) ! 717: crblock(perm, genbuf, nib, cntch); ! 718: #endif ! 719: if (write(io, genbuf, nib) != nib) { ! 720: wrerror(); ! 721: } ! 722: cntch += nib; ! 723: } ! 724: ! 725: /* ! 726: * A write error has occurred; if the file being written was ! 727: * the edited file then we consider it to have changed since it is ! 728: * now likely scrambled. ! 729: */ ! 730: wrerror() ! 731: { ! 732: ! 733: if (eq(file, savedfile) && edited) ! 734: change(); ! 735: syserror(); ! 736: } ! 737: ! 738: /* ! 739: * Source command, handles nested sources. ! 740: * Traps errors since it mungs unit 0 during the source. ! 741: */ ! 742: short slevel; ! 743: short ttyindes; ! 744: ! 745: source(fil, okfail) ! 746: char *fil; ! 747: bool okfail; ! 748: { ! 749: jmp_buf osetexit; ! 750: register int saveinp, ointty, oerrno; ! 751: char *saveglobp; ! 752: short savepeekc; ! 753: ! 754: signal(SIGINT, SIG_IGN); ! 755: saveinp = dup(0); ! 756: savepeekc = peekc; ! 757: saveglobp = globp; ! 758: peekc = 0; globp = 0; ! 759: if (saveinp < 0) ! 760: error("Too many nested sources"); ! 761: if (slevel <= 0) ! 762: ttyindes = saveinp; ! 763: close(0); ! 764: if (open(fil, 0) < 0) { ! 765: oerrno = errno; ! 766: setrupt(); ! 767: dup(saveinp); ! 768: close(saveinp); ! 769: errno = oerrno; ! 770: if (!okfail) ! 771: filioerr(fil); ! 772: return; ! 773: } ! 774: slevel++; ! 775: ointty = intty; ! 776: intty = isatty(0); ! 777: oprompt = value(PROMPT); ! 778: value(PROMPT) &= intty; ! 779: getexit(osetexit); ! 780: setrupt(); ! 781: if (setexit() == 0) ! 782: commands(1, 1); ! 783: else if (slevel > 1) { ! 784: close(0); ! 785: dup(saveinp); ! 786: close(saveinp); ! 787: slevel--; ! 788: resexit(osetexit); ! 789: reset(); ! 790: } ! 791: intty = ointty; ! 792: value(PROMPT) = oprompt; ! 793: close(0); ! 794: dup(saveinp); ! 795: close(saveinp); ! 796: globp = saveglobp; ! 797: peekc = savepeekc; ! 798: slevel--; ! 799: resexit(osetexit); ! 800: } ! 801: ! 802: /* ! 803: * Clear io statistics before a read or write. ! 804: */ ! 805: clrstats() ! 806: { ! 807: ! 808: ninbuf = 0; ! 809: cntch = 0; ! 810: cntln = 0; ! 811: cntnull = 0; ! 812: cntodd = 0; ! 813: } ! 814: ! 815: /* ! 816: * Io is finished, close the unit and print statistics. ! 817: */ ! 818: iostats() ! 819: { ! 820: ! 821: (void) fsync(io); ! 822: close(io); ! 823: io = -1; ! 824: if (hush == 0) { ! 825: if (value(TERSE)) ! 826: printf(" %d/%D", cntln, cntch); ! 827: else ! 828: printf(" %d line%s, %D character%s", cntln, plural((long) cntln), ! 829: cntch, plural(cntch)); ! 830: if (cntnull || cntodd) { ! 831: printf(" ("); ! 832: if (cntnull) { ! 833: printf("%D null", cntnull); ! 834: if (cntodd) ! 835: printf(", "); ! 836: } ! 837: if (cntodd) ! 838: printf("%D non-ASCII", cntodd); ! 839: putchar(')'); ! 840: } ! 841: noonl(); ! 842: flush(); ! 843: } ! 844: return (cntnull != 0 || cntodd != 0); ! 845: } ! 846: ! 847: #if USG | USG3TTY ! 848: /* It's so wonderful how we all speak the same language... */ ! 849: # define index strchr ! 850: # define rindex strrchr ! 851: #endif ! 852: ! 853: #ifdef SUICIDE /* and it wasnt even an option! */ ! 854: checkmodeline(line) ! 855: char *line; ! 856: { ! 857: char *beg, *end; ! 858: char cmdbuf[1024]; ! 859: char *index(), *rindex(); ! 860: ! 861: beg = index(line, ':'); ! 862: if (beg == NULL) ! 863: return; ! 864: if (beg[-2] != 'e' && beg[-2] != 'v') return; ! 865: if (beg[-1] != 'x' && beg[-1] != 'i') return; ! 866: ! 867: strncpy(cmdbuf, beg+1, sizeof cmdbuf); ! 868: end = rindex(cmdbuf, ':'); ! 869: if (end == NULL) ! 870: return; ! 871: *end = 0; ! 872: globp = cmdbuf; ! 873: commands(1, 1); ! 874: } ! 875: #endif
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