14887Schin /***********************************************************************
24887Schin * *
34887Schin * This software is part of the ast package *
4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1992-2010 AT&T Intellectual Property *
54887Schin * and is licensed under the *
64887Schin * Common Public License, Version 1.0 *
78462SApril.Chin@Sun.COM * by AT&T Intellectual Property *
84887Schin * *
94887Schin * A copy of the License is available at *
104887Schin * http://www.opensource.org/licenses/cpl1.0.txt *
114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
124887Schin * *
134887Schin * Information and Software Systems Research *
144887Schin * AT&T Research *
154887Schin * Florham Park NJ *
164887Schin * *
174887Schin * Glenn Fowler <gsf@research.att.com> *
184887Schin * David Korn <dgk@research.att.com> *
194887Schin * *
204887Schin ***********************************************************************/
214887Schin #pragma prototyped
224887Schin /*
234887Schin * David Korn
244887Schin * AT&T Bell Laboratories
254887Schin *
264887Schin * cut fields or columns from fields from a file
274887Schin */
284887Schin
294887Schin static const char usage[] =
30*12068SRoger.Faulkner@Oracle.COM "[-?\n@(#)$Id: cut (AT&T Research) 2009-12-04 $\n]"
314887Schin USAGE_LICENSE
324887Schin "[+NAME?cut - cut out selected columns or fields of each line of a file]"
334887Schin "[+DESCRIPTION?\bcut\b bytes, characters, or character-delimited fields "
344887Schin "from one or more files, contatenating them on standard output.]"
354887Schin "[+?The option argument \alist\a is a comma-separated or blank-separated "
364887Schin "list of positive numbers and ranges. Ranges can be of three "
374887Schin "forms. The first is two positive integers separated by a hyphen "
384887Schin "(\alow\a\b-\b\ahigh\a), which represents all fields from \alow\a to "
394887Schin "\ahigh\a. The second is a positive number preceded by a hyphen "
404887Schin "(\b-\b\ahigh\a), which represents all fields from field \b1\b to "
414887Schin "\ahigh\a. The last is a positive number followed by a hyphen "
424887Schin "(\alow\a\b-\b), which represents all fields from \alow\a to the "
434887Schin "last field, inclusive. Elements in the \alist\a can be repeated, "
444887Schin "can overlap, and can appear in any order. The order of the "
454887Schin "output is that of the input.]"
464887Schin "[+?One and only one of \b-b\b, \b-c\b, or \b-f\b must be specified.]"
474887Schin "[+?If no \afile\a is given, or if the \afile\a is \b-\b, \bcut\b "
484887Schin "cuts from standard input. The start of the file is defined "
494887Schin "as the current offset.]"
50*12068SRoger.Faulkner@Oracle.COM "[b:bytes]:[list?\bcut\b based on a list of byte counts.]"
51*12068SRoger.Faulkner@Oracle.COM "[c:characters]:[list?\bcut\b based on a list of character counts.]"
524887Schin "[d:delimiter]:[delim?The field character for the \b-f\b option is set "
534887Schin "to \adelim\a. The default is the \btab\b character.]"
544887Schin "[f:fields]:[list?\bcut\b based on fields separated by the delimiter "
554887Schin "character specified with the \b-d\b optiion.]"
56*12068SRoger.Faulkner@Oracle.COM "[n!:split?Split multibyte characters selected by the \b-b\b option.]"
574887Schin "[R|r:reclen]#[reclen?If \areclen\a > 0, the input will be read as fixed length "
584887Schin "records of length \areclen\a when used with the \b-b\b or \b-c\b "
594887Schin "option.]"
604887Schin "[s:suppress|only-delimited?Suppress lines with no delimiter characters, "
614887Schin "when used with the \b-f\b option. By default, lines with no "
624887Schin "delimiters will be passsed in untouched.]"
634887Schin "[D:line-delimeter|output-delimiter]:[ldelim?The line delimiter character for "
644887Schin "the \b-f\b option is set to \aldelim\a. The default is the "
654887Schin "\bnewline\b character.]"
66*12068SRoger.Faulkner@Oracle.COM "[N!:newline?Output new-lines at end of each record when used "
674887Schin "with the \b-b\b or \b-c\b option.]"
684887Schin "\n"
694887Schin "\n[file ...]\n"
704887Schin "\n"
714887Schin "[+EXIT STATUS?]{"
724887Schin "[+0?All files processed successfully.]"
734887Schin "[+>0?One or more files failed to open or could not be read.]"
744887Schin "}"
754887Schin "[+SEE ALSO?\bpaste\b(1), \bgrep\b(1)]"
764887Schin ;
774887Schin
784887Schin #include <cmd.h>
794887Schin #include <ctype.h>
804887Schin
81*12068SRoger.Faulkner@Oracle.COM typedef struct Delim_s
824887Schin {
83*12068SRoger.Faulkner@Oracle.COM char* str;
84*12068SRoger.Faulkner@Oracle.COM int len;
85*12068SRoger.Faulkner@Oracle.COM int chr;
86*12068SRoger.Faulkner@Oracle.COM } Delim_t;
874887Schin
884887Schin typedef struct Cut_s
894887Schin {
90*12068SRoger.Faulkner@Oracle.COM int mb;
91*12068SRoger.Faulkner@Oracle.COM int eob;
924887Schin int cflag;
93*12068SRoger.Faulkner@Oracle.COM int nosplit;
944887Schin int sflag;
954887Schin int nlflag;
964887Schin int reclen;
97*12068SRoger.Faulkner@Oracle.COM Delim_t wdelim;
98*12068SRoger.Faulkner@Oracle.COM Delim_t ldelim;
99*12068SRoger.Faulkner@Oracle.COM unsigned char space[UCHAR_MAX+1];
1004887Schin int list[2]; /* NOTE: must be last member */
1014887Schin } Cut_t;
1024887Schin
103*12068SRoger.Faulkner@Oracle.COM #define HUGE INT_MAX
1044887Schin #define BLOCK 8*1024
1054887Schin #define C_BYTES 1
1064887Schin #define C_CHARS 2
1074887Schin #define C_FIELDS 4
1084887Schin #define C_SUPRESS 8
109*12068SRoger.Faulkner@Oracle.COM #define C_NOSPLIT 16
1104887Schin #define C_NONEWLINE 32
1114887Schin
112*12068SRoger.Faulkner@Oracle.COM #define SP_LINE 1
113*12068SRoger.Faulkner@Oracle.COM #define SP_WORD 2
114*12068SRoger.Faulkner@Oracle.COM #define SP_WIDE 3
115*12068SRoger.Faulkner@Oracle.COM
116*12068SRoger.Faulkner@Oracle.COM #define mb2wc(w,p,n) (*ast.mb_towc)(&w,(char*)p,n)
117*12068SRoger.Faulkner@Oracle.COM
1184887Schin /*
1194887Schin * compare the first of an array of integers
1204887Schin */
1214887Schin
122*12068SRoger.Faulkner@Oracle.COM static int
mycomp(register const void * a,register const void * b)123*12068SRoger.Faulkner@Oracle.COM mycomp(register const void* a, register const void* b)
1244887Schin {
125*12068SRoger.Faulkner@Oracle.COM if (*((int*)a) < *((int*)b))
126*12068SRoger.Faulkner@Oracle.COM return -1;
127*12068SRoger.Faulkner@Oracle.COM if (*((int*)a) > *((int*)b))
128*12068SRoger.Faulkner@Oracle.COM return 1;
129*12068SRoger.Faulkner@Oracle.COM return 0;
1304887Schin }
1314887Schin
132*12068SRoger.Faulkner@Oracle.COM static Cut_t*
cutinit(int mode,char * str,Delim_t * wdelim,Delim_t * ldelim,size_t reclen)133*12068SRoger.Faulkner@Oracle.COM cutinit(int mode, char* str, Delim_t* wdelim, Delim_t* ldelim, size_t reclen)
1344887Schin {
135*12068SRoger.Faulkner@Oracle.COM register int* lp;
136*12068SRoger.Faulkner@Oracle.COM register int c;
137*12068SRoger.Faulkner@Oracle.COM register int n = 0;
138*12068SRoger.Faulkner@Oracle.COM register int range = 0;
139*12068SRoger.Faulkner@Oracle.COM register char* cp = str;
140*12068SRoger.Faulkner@Oracle.COM Cut_t* cut;
141*12068SRoger.Faulkner@Oracle.COM
142*12068SRoger.Faulkner@Oracle.COM if (!(cut = (Cut_t*)stakalloc(sizeof(Cut_t) + strlen(cp) * sizeof(int))))
1434887Schin error(ERROR_exit(1), "out of space");
144*12068SRoger.Faulkner@Oracle.COM if (cut->mb = mbwide())
1454887Schin {
146*12068SRoger.Faulkner@Oracle.COM memset(cut->space, 0, sizeof(cut->space) / 2);
147*12068SRoger.Faulkner@Oracle.COM memset(cut->space + sizeof(cut->space) / 2, SP_WIDE, sizeof(cut->space) / 2);
148*12068SRoger.Faulkner@Oracle.COM }
149*12068SRoger.Faulkner@Oracle.COM else
150*12068SRoger.Faulkner@Oracle.COM memset(cut->space, 0, sizeof(cut->space));
151*12068SRoger.Faulkner@Oracle.COM cut->wdelim = *wdelim;
152*12068SRoger.Faulkner@Oracle.COM if (wdelim->len == 1)
153*12068SRoger.Faulkner@Oracle.COM cut->space[wdelim->chr] = SP_WORD;
154*12068SRoger.Faulkner@Oracle.COM cut->ldelim = *ldelim;
155*12068SRoger.Faulkner@Oracle.COM cut->eob = (ldelim->len == 1) ? ldelim->chr : 0;
156*12068SRoger.Faulkner@Oracle.COM cut->space[cut->eob] = SP_LINE;
157*12068SRoger.Faulkner@Oracle.COM cut->cflag = (mode&C_CHARS) && cut->mb;
158*12068SRoger.Faulkner@Oracle.COM cut->nosplit = (mode&(C_BYTES|C_NOSPLIT)) == (C_BYTES|C_NOSPLIT) && cut->mb;
159*12068SRoger.Faulkner@Oracle.COM cut->sflag = (mode&C_SUPRESS) != 0;
160*12068SRoger.Faulkner@Oracle.COM cut->nlflag = (mode&C_NONEWLINE) != 0;
161*12068SRoger.Faulkner@Oracle.COM cut->reclen = reclen;
162*12068SRoger.Faulkner@Oracle.COM lp = cut->list;
163*12068SRoger.Faulkner@Oracle.COM for (;;)
164*12068SRoger.Faulkner@Oracle.COM switch(c = *cp++)
165*12068SRoger.Faulkner@Oracle.COM {
1664887Schin case ' ':
1674887Schin case '\t':
1684887Schin while(*cp==' ' || *cp=='\t')
1694887Schin cp++;
170*12068SRoger.Faulkner@Oracle.COM /*FALLTHROUGH*/
1714887Schin case 0:
1724887Schin case ',':
1734887Schin if(range)
1744887Schin {
1754887Schin --range;
176*12068SRoger.Faulkner@Oracle.COM if((n = (n ? (n-range) : (HUGE-1))) < 0)
1774887Schin error(ERROR_exit(1),"invalid range for c/f option");
1784887Schin *lp++ = range;
1794887Schin *lp++ = n;
1804887Schin }
1814887Schin else
1824887Schin {
1834887Schin *lp++ = --n;
1844887Schin *lp++ = 1;
1854887Schin }
1864887Schin if(c==0)
1874887Schin {
1884887Schin register int *dp;
1894887Schin *lp = HUGE;
190*12068SRoger.Faulkner@Oracle.COM n = 1 + (lp-cut->list)/2;
191*12068SRoger.Faulkner@Oracle.COM qsort(lp=cut->list,n,2*sizeof(*lp),mycomp);
1924887Schin /* eliminate overlapping regions */
1934887Schin for(n=0,range= -2,dp=lp; *lp!=HUGE; lp+=2)
1944887Schin {
1954887Schin if(lp[0] <= range)
1964887Schin {
1974887Schin if(lp[1]==HUGE)
1984887Schin {
1994887Schin dp[-1] = HUGE;
2004887Schin break;
2014887Schin }
2024887Schin if((c = lp[0]+lp[1]-range)>0)
2034887Schin {
2044887Schin range += c;
2054887Schin dp[-1] += c;
2064887Schin }
2074887Schin }
2084887Schin else
2094887Schin {
2104887Schin range = *dp++ = lp[0];
2114887Schin if(lp[1]==HUGE)
2124887Schin {
2134887Schin *dp++ = HUGE;
2144887Schin break;
2154887Schin }
2164887Schin range += (*dp++ = lp[1]);
2174887Schin }
2184887Schin }
2194887Schin *dp = HUGE;
220*12068SRoger.Faulkner@Oracle.COM lp = cut->list;
2214887Schin /* convert ranges into gaps */
2224887Schin for(n=0; *lp!=HUGE; lp+=2)
2234887Schin {
2244887Schin c = *lp;
2254887Schin *lp -= n;
2264887Schin n = c+lp[1];
2274887Schin }
228*12068SRoger.Faulkner@Oracle.COM return cut;
2294887Schin }
2304887Schin n = range = 0;
2314887Schin break;
2324887Schin
2334887Schin case '-':
2344887Schin if(range)
2354887Schin error(ERROR_exit(1),"bad list for c/f option");
2364887Schin range = n?n:1;
2374887Schin n = 0;
2384887Schin break;
2394887Schin
2404887Schin default:
2414887Schin if(!isdigit(c))
2424887Schin error(ERROR_exit(1),"bad list for c/f option");
2434887Schin n = 10*n + (c-'0');
244*12068SRoger.Faulkner@Oracle.COM break;
245*12068SRoger.Faulkner@Oracle.COM }
2464887Schin /* NOTREACHED */
2474887Schin }
2484887Schin
2494887Schin /*
2504887Schin * cut each line of file <fdin> and put results to <fdout> using list <list>
2514887Schin */
2524887Schin
253*12068SRoger.Faulkner@Oracle.COM static void
cutcols(Cut_t * cut,Sfio_t * fdin,Sfio_t * fdout)254*12068SRoger.Faulkner@Oracle.COM cutcols(Cut_t* cut, Sfio_t* fdin, Sfio_t* fdout)
2554887Schin {
256*12068SRoger.Faulkner@Oracle.COM register int c;
257*12068SRoger.Faulkner@Oracle.COM register int len;
258*12068SRoger.Faulkner@Oracle.COM register int ncol = 0;
259*12068SRoger.Faulkner@Oracle.COM register const int* lp = cut->list;
260*12068SRoger.Faulkner@Oracle.COM register char* bp;
2614887Schin register int skip; /* non-zero for don't copy */
262*12068SRoger.Faulkner@Oracle.COM int must;
263*12068SRoger.Faulkner@Oracle.COM char* ep;
264*12068SRoger.Faulkner@Oracle.COM const char* xx;
265*12068SRoger.Faulkner@Oracle.COM
266*12068SRoger.Faulkner@Oracle.COM for (;;)
2674887Schin {
268*12068SRoger.Faulkner@Oracle.COM if (len = cut->reclen)
269*12068SRoger.Faulkner@Oracle.COM bp = sfreserve(fdin, len, -1);
2704887Schin else
271*12068SRoger.Faulkner@Oracle.COM bp = sfgetr(fdin, '\n', 0);
272*12068SRoger.Faulkner@Oracle.COM if (!bp && !(bp = sfgetr(fdin, 0, SF_LASTR)))
2734887Schin break;
2744887Schin len = sfvalue(fdin);
275*12068SRoger.Faulkner@Oracle.COM ep = bp + len;
276*12068SRoger.Faulkner@Oracle.COM xx = 0;
277*12068SRoger.Faulkner@Oracle.COM if (!(ncol = skip = *(lp = cut->list)))
2784887Schin ncol = *++lp;
279*12068SRoger.Faulkner@Oracle.COM must = 1;
280*12068SRoger.Faulkner@Oracle.COM do
2814887Schin {
282*12068SRoger.Faulkner@Oracle.COM if (cut->nosplit)
283*12068SRoger.Faulkner@Oracle.COM {
284*12068SRoger.Faulkner@Oracle.COM register const char* s = bp;
285*12068SRoger.Faulkner@Oracle.COM register int w = len < ncol ? len : ncol;
286*12068SRoger.Faulkner@Oracle.COM register int z;
287*12068SRoger.Faulkner@Oracle.COM
288*12068SRoger.Faulkner@Oracle.COM while (w > 0)
289*12068SRoger.Faulkner@Oracle.COM {
290*12068SRoger.Faulkner@Oracle.COM if (!(*s & 0x80))
291*12068SRoger.Faulkner@Oracle.COM z = 1;
292*12068SRoger.Faulkner@Oracle.COM else if ((z = mblen(s, w)) <= 0)
293*12068SRoger.Faulkner@Oracle.COM {
294*12068SRoger.Faulkner@Oracle.COM if (s == bp && xx)
295*12068SRoger.Faulkner@Oracle.COM {
296*12068SRoger.Faulkner@Oracle.COM w += s - xx;
297*12068SRoger.Faulkner@Oracle.COM bp = (char*)(s = xx);
298*12068SRoger.Faulkner@Oracle.COM xx = 0;
299*12068SRoger.Faulkner@Oracle.COM continue;
300*12068SRoger.Faulkner@Oracle.COM }
301*12068SRoger.Faulkner@Oracle.COM xx = s;
302*12068SRoger.Faulkner@Oracle.COM if (skip)
303*12068SRoger.Faulkner@Oracle.COM s += w;
304*12068SRoger.Faulkner@Oracle.COM w = 0;
305*12068SRoger.Faulkner@Oracle.COM break;
306*12068SRoger.Faulkner@Oracle.COM }
307*12068SRoger.Faulkner@Oracle.COM s += z;
308*12068SRoger.Faulkner@Oracle.COM w -= z;
309*12068SRoger.Faulkner@Oracle.COM }
310*12068SRoger.Faulkner@Oracle.COM c = s - bp;
311*12068SRoger.Faulkner@Oracle.COM ncol = !w && ncol >= len;
312*12068SRoger.Faulkner@Oracle.COM }
313*12068SRoger.Faulkner@Oracle.COM else if (cut->cflag)
314*12068SRoger.Faulkner@Oracle.COM {
315*12068SRoger.Faulkner@Oracle.COM register const char* s = bp;
316*12068SRoger.Faulkner@Oracle.COM register int w = len;
317*12068SRoger.Faulkner@Oracle.COM register int z;
318*12068SRoger.Faulkner@Oracle.COM
319*12068SRoger.Faulkner@Oracle.COM while (w > 0 && ncol > 0)
320*12068SRoger.Faulkner@Oracle.COM {
321*12068SRoger.Faulkner@Oracle.COM ncol--;
322*12068SRoger.Faulkner@Oracle.COM if (!(*s & 0x80) || (z = mblen(s, w)) <= 0)
323*12068SRoger.Faulkner@Oracle.COM z = 1;
324*12068SRoger.Faulkner@Oracle.COM s += z;
325*12068SRoger.Faulkner@Oracle.COM w -= z;
326*12068SRoger.Faulkner@Oracle.COM
327*12068SRoger.Faulkner@Oracle.COM }
328*12068SRoger.Faulkner@Oracle.COM c = s - bp;
329*12068SRoger.Faulkner@Oracle.COM ncol = !w && (ncol || !skip);
330*12068SRoger.Faulkner@Oracle.COM }
331*12068SRoger.Faulkner@Oracle.COM else
332*12068SRoger.Faulkner@Oracle.COM {
333*12068SRoger.Faulkner@Oracle.COM if ((c = ncol) > len)
334*12068SRoger.Faulkner@Oracle.COM c = len;
335*12068SRoger.Faulkner@Oracle.COM else if (c == len && !skip)
336*12068SRoger.Faulkner@Oracle.COM ncol++;
337*12068SRoger.Faulkner@Oracle.COM ncol -= c;
338*12068SRoger.Faulkner@Oracle.COM }
339*12068SRoger.Faulkner@Oracle.COM if (!skip && c)
340*12068SRoger.Faulkner@Oracle.COM {
341*12068SRoger.Faulkner@Oracle.COM if (sfwrite(fdout, (char*)bp, c) < 0)
342*12068SRoger.Faulkner@Oracle.COM return;
343*12068SRoger.Faulkner@Oracle.COM must = 0;
344*12068SRoger.Faulkner@Oracle.COM }
345*12068SRoger.Faulkner@Oracle.COM bp += c;
346*12068SRoger.Faulkner@Oracle.COM if (ncol)
3474887Schin break;
3484887Schin len -= c;
3494887Schin ncol = *++lp;
3504887Schin skip = !skip;
351*12068SRoger.Faulkner@Oracle.COM } while (ncol != HUGE);
352*12068SRoger.Faulkner@Oracle.COM if (!cut->nlflag && (skip || must || cut->reclen))
353*12068SRoger.Faulkner@Oracle.COM {
354*12068SRoger.Faulkner@Oracle.COM if (cut->ldelim.len > 1)
355*12068SRoger.Faulkner@Oracle.COM sfwrite(fdout, cut->ldelim.str, cut->ldelim.len);
356*12068SRoger.Faulkner@Oracle.COM else
357*12068SRoger.Faulkner@Oracle.COM sfputc(fdout, cut->ldelim.chr);
3584887Schin }
3594887Schin }
3604887Schin }
3614887Schin
3624887Schin /*
3634887Schin * cut each line of file <fdin> and put results to <fdout> using list <list>
3644887Schin * stream <fdin> must be line buffered
3654887Schin */
3664887Schin
367*12068SRoger.Faulkner@Oracle.COM static void
cutfields(Cut_t * cut,Sfio_t * fdin,Sfio_t * fdout)368*12068SRoger.Faulkner@Oracle.COM cutfields(Cut_t* cut, Sfio_t* fdin, Sfio_t* fdout)
3694887Schin {
370*12068SRoger.Faulkner@Oracle.COM register unsigned char *sp = cut->space;
3714887Schin register unsigned char *cp;
372*12068SRoger.Faulkner@Oracle.COM register unsigned char *wp;
3734887Schin register int c, nfields;
374*12068SRoger.Faulkner@Oracle.COM register const int *lp = cut->list;
3754887Schin register unsigned char *copy;
3764887Schin register int nodelim, empty, inword=0;
377*12068SRoger.Faulkner@Oracle.COM register unsigned char *ep;
378*12068SRoger.Faulkner@Oracle.COM unsigned char *bp, *first;
3794887Schin int lastchar;
380*12068SRoger.Faulkner@Oracle.COM wchar_t w;
3814887Schin Sfio_t *fdtmp = 0;
3824887Schin long offset = 0;
383*12068SRoger.Faulkner@Oracle.COM unsigned char mb[8];
3844887Schin /* process each buffer */
385*12068SRoger.Faulkner@Oracle.COM while ((bp = (unsigned char*)sfreserve(fdin, SF_UNBOUND, -1)) && (c = sfvalue(fdin)) > 0)
3864887Schin {
387*12068SRoger.Faulkner@Oracle.COM cp = bp;
388*12068SRoger.Faulkner@Oracle.COM ep = cp + --c;
389*12068SRoger.Faulkner@Oracle.COM if((lastchar = cp[c]) != cut->eob)
390*12068SRoger.Faulkner@Oracle.COM *ep = cut->eob;
3914887Schin /* process each line in the buffer */
392*12068SRoger.Faulkner@Oracle.COM while (cp <= ep)
3934887Schin {
3944887Schin first = cp;
395*12068SRoger.Faulkner@Oracle.COM if (!inword)
3964887Schin {
3974887Schin nodelim = empty = 1;
3984887Schin copy = cp;
399*12068SRoger.Faulkner@Oracle.COM if (nfields = *(lp = cut->list))
4004887Schin copy = 0;
4014887Schin else
4024887Schin nfields = *++lp;
4034887Schin }
404*12068SRoger.Faulkner@Oracle.COM else if (copy)
4054887Schin copy = cp;
4064887Schin inword = 0;
407*12068SRoger.Faulkner@Oracle.COM do
4084887Schin {
4094887Schin /* skip over non-delimiter characters */
410*12068SRoger.Faulkner@Oracle.COM if (cut->mb)
411*12068SRoger.Faulkner@Oracle.COM for (;;)
412*12068SRoger.Faulkner@Oracle.COM {
413*12068SRoger.Faulkner@Oracle.COM switch (c = sp[*(unsigned char*)cp++])
414*12068SRoger.Faulkner@Oracle.COM {
415*12068SRoger.Faulkner@Oracle.COM case 0:
416*12068SRoger.Faulkner@Oracle.COM continue;
417*12068SRoger.Faulkner@Oracle.COM case SP_WIDE:
418*12068SRoger.Faulkner@Oracle.COM wp = --cp;
419*12068SRoger.Faulkner@Oracle.COM while ((c = mb2wc(w, cp, ep - cp)) <= 0)
420*12068SRoger.Faulkner@Oracle.COM {
421*12068SRoger.Faulkner@Oracle.COM /* mb char possibly spanning buffer boundary -- fun stuff */
422*12068SRoger.Faulkner@Oracle.COM if ((ep - cp) < mbmax())
423*12068SRoger.Faulkner@Oracle.COM {
424*12068SRoger.Faulkner@Oracle.COM int i;
425*12068SRoger.Faulkner@Oracle.COM int j;
426*12068SRoger.Faulkner@Oracle.COM int k;
427*12068SRoger.Faulkner@Oracle.COM
428*12068SRoger.Faulkner@Oracle.COM if (lastchar != cut->eob)
429*12068SRoger.Faulkner@Oracle.COM {
430*12068SRoger.Faulkner@Oracle.COM *ep = lastchar;
431*12068SRoger.Faulkner@Oracle.COM if ((c = mb2wc(w, cp, ep - cp)) > 0)
432*12068SRoger.Faulkner@Oracle.COM break;
433*12068SRoger.Faulkner@Oracle.COM }
434*12068SRoger.Faulkner@Oracle.COM if (copy)
435*12068SRoger.Faulkner@Oracle.COM {
436*12068SRoger.Faulkner@Oracle.COM empty = 0;
437*12068SRoger.Faulkner@Oracle.COM if ((c = cp - copy) > 0 && sfwrite(fdout, (char*)copy, c) < 0)
438*12068SRoger.Faulkner@Oracle.COM goto failed;
439*12068SRoger.Faulkner@Oracle.COM }
440*12068SRoger.Faulkner@Oracle.COM for (i = 0; i <= (ep - cp); i++)
441*12068SRoger.Faulkner@Oracle.COM mb[i] = cp[i];
442*12068SRoger.Faulkner@Oracle.COM if (!(bp = (unsigned char*)sfreserve(fdin, SF_UNBOUND, -1)) || (c = sfvalue(fdin)) <= 0)
443*12068SRoger.Faulkner@Oracle.COM goto failed;
444*12068SRoger.Faulkner@Oracle.COM cp = bp;
445*12068SRoger.Faulkner@Oracle.COM ep = cp + --c;
446*12068SRoger.Faulkner@Oracle.COM if ((lastchar = cp[c]) != cut->eob)
447*12068SRoger.Faulkner@Oracle.COM *ep = cut->eob;
448*12068SRoger.Faulkner@Oracle.COM j = i;
449*12068SRoger.Faulkner@Oracle.COM k = 0;
450*12068SRoger.Faulkner@Oracle.COM while (j < mbmax())
451*12068SRoger.Faulkner@Oracle.COM mb[j++] = cp[k++];
452*12068SRoger.Faulkner@Oracle.COM if ((c = mb2wc(w, (char*)mb, j)) <= 0)
453*12068SRoger.Faulkner@Oracle.COM {
454*12068SRoger.Faulkner@Oracle.COM c = i;
455*12068SRoger.Faulkner@Oracle.COM w = 0;
456*12068SRoger.Faulkner@Oracle.COM }
457*12068SRoger.Faulkner@Oracle.COM first = bp = cp += c - i;
458*12068SRoger.Faulkner@Oracle.COM if (copy)
459*12068SRoger.Faulkner@Oracle.COM {
460*12068SRoger.Faulkner@Oracle.COM copy = bp;
461*12068SRoger.Faulkner@Oracle.COM if (w == cut->ldelim.chr)
462*12068SRoger.Faulkner@Oracle.COM lastchar = cut->ldelim.chr;
463*12068SRoger.Faulkner@Oracle.COM else if (w != cut->wdelim.chr)
464*12068SRoger.Faulkner@Oracle.COM {
465*12068SRoger.Faulkner@Oracle.COM empty = 0;
466*12068SRoger.Faulkner@Oracle.COM if (sfwrite(fdout, (char*)mb, c) < 0)
467*12068SRoger.Faulkner@Oracle.COM goto failed;
468*12068SRoger.Faulkner@Oracle.COM }
469*12068SRoger.Faulkner@Oracle.COM }
470*12068SRoger.Faulkner@Oracle.COM c = 0;
471*12068SRoger.Faulkner@Oracle.COM }
472*12068SRoger.Faulkner@Oracle.COM else
473*12068SRoger.Faulkner@Oracle.COM {
474*12068SRoger.Faulkner@Oracle.COM w = *cp;
475*12068SRoger.Faulkner@Oracle.COM c = 1;
476*12068SRoger.Faulkner@Oracle.COM }
477*12068SRoger.Faulkner@Oracle.COM break;
478*12068SRoger.Faulkner@Oracle.COM }
479*12068SRoger.Faulkner@Oracle.COM cp += c;
480*12068SRoger.Faulkner@Oracle.COM c = w;
481*12068SRoger.Faulkner@Oracle.COM if (c == cut->wdelim.chr)
482*12068SRoger.Faulkner@Oracle.COM {
483*12068SRoger.Faulkner@Oracle.COM c = SP_WORD;
484*12068SRoger.Faulkner@Oracle.COM break;
485*12068SRoger.Faulkner@Oracle.COM }
486*12068SRoger.Faulkner@Oracle.COM if (c == cut->ldelim.chr)
487*12068SRoger.Faulkner@Oracle.COM {
488*12068SRoger.Faulkner@Oracle.COM c = SP_LINE;
489*12068SRoger.Faulkner@Oracle.COM break;
490*12068SRoger.Faulkner@Oracle.COM }
491*12068SRoger.Faulkner@Oracle.COM continue;
492*12068SRoger.Faulkner@Oracle.COM default:
493*12068SRoger.Faulkner@Oracle.COM wp = cp - 1;
494*12068SRoger.Faulkner@Oracle.COM break;
495*12068SRoger.Faulkner@Oracle.COM }
4964887Schin break;
497*12068SRoger.Faulkner@Oracle.COM }
498*12068SRoger.Faulkner@Oracle.COM else
499*12068SRoger.Faulkner@Oracle.COM {
500*12068SRoger.Faulkner@Oracle.COM while (!(c = sp[*cp++]));
501*12068SRoger.Faulkner@Oracle.COM wp = cp - 1;
502*12068SRoger.Faulkner@Oracle.COM }
503*12068SRoger.Faulkner@Oracle.COM /* check for end-of-line */
504*12068SRoger.Faulkner@Oracle.COM if (c == SP_LINE)
505*12068SRoger.Faulkner@Oracle.COM {
506*12068SRoger.Faulkner@Oracle.COM if (cp <= ep)
5074887Schin break;
508*12068SRoger.Faulkner@Oracle.COM if (lastchar == cut->ldelim.chr)
509*12068SRoger.Faulkner@Oracle.COM break;
510*12068SRoger.Faulkner@Oracle.COM /* restore cut->last character */
511*12068SRoger.Faulkner@Oracle.COM if (lastchar != cut->eob)
512*12068SRoger.Faulkner@Oracle.COM *ep = lastchar;
5134887Schin inword++;
514*12068SRoger.Faulkner@Oracle.COM if (!sp[lastchar])
5154887Schin break;
5164887Schin }
5174887Schin nodelim = 0;
518*12068SRoger.Faulkner@Oracle.COM if (--nfields > 0)
5194887Schin continue;
5204887Schin nfields = *++lp;
521*12068SRoger.Faulkner@Oracle.COM if (copy)
5224887Schin {
5234887Schin empty = 0;
524*12068SRoger.Faulkner@Oracle.COM if ((c = wp - copy) > 0 && sfwrite(fdout, (char*)copy, c) < 0)
5254887Schin goto failed;
5264887Schin copy = 0;
5274887Schin }
5284887Schin else
5294887Schin /* set to delimiter unless the first field */
530*12068SRoger.Faulkner@Oracle.COM copy = empty ? cp : wp;
531*12068SRoger.Faulkner@Oracle.COM } while (!inword);
532*12068SRoger.Faulkner@Oracle.COM if (!inword)
5334887Schin {
534*12068SRoger.Faulkner@Oracle.COM if (!copy)
5354887Schin {
536*12068SRoger.Faulkner@Oracle.COM if (nodelim)
5374887Schin {
538*12068SRoger.Faulkner@Oracle.COM if (!cut->sflag)
5394887Schin {
540*12068SRoger.Faulkner@Oracle.COM if (offset)
5414887Schin {
5424887Schin sfseek(fdtmp,(Sfoff_t)0,SEEK_SET);
5434887Schin sfmove(fdtmp,fdout,offset,-1);
5444887Schin }
5454887Schin copy = first;
5464887Schin }
5474887Schin }
5484887Schin else
5494887Schin sfputc(fdout,'\n');
5504887Schin }
551*12068SRoger.Faulkner@Oracle.COM if (offset)
5524887Schin sfseek(fdtmp,offset=0,SEEK_SET);
5534887Schin }
554*12068SRoger.Faulkner@Oracle.COM if (copy && (c=cp-copy)>0 && (!nodelim || !cut->sflag) && sfwrite(fdout,(char*)copy,c)< 0)
5554887Schin goto failed;
5564887Schin }
5574887Schin /* see whether to save in tmp file */
558*12068SRoger.Faulkner@Oracle.COM if(inword && nodelim && !cut->sflag && (c=cp-first)>0)
5594887Schin {
5604887Schin /* copy line to tmpfile in case no fields */
5614887Schin if(!fdtmp)
5624887Schin fdtmp = sftmp(BLOCK);
5634887Schin sfwrite(fdtmp,(char*)first,c);
5644887Schin offset +=c;
5654887Schin }
5664887Schin }
567*12068SRoger.Faulkner@Oracle.COM failed:
5684887Schin if(fdtmp)
5694887Schin sfclose(fdtmp);
5704887Schin }
5714887Schin
5724887Schin int
b_cut(int argc,char ** argv,void * context)573*12068SRoger.Faulkner@Oracle.COM b_cut(int argc, char** argv, void* context)
5744887Schin {
575*12068SRoger.Faulkner@Oracle.COM register char* cp = 0;
576*12068SRoger.Faulkner@Oracle.COM register Sfio_t* fp;
577*12068SRoger.Faulkner@Oracle.COM char* s;
578*12068SRoger.Faulkner@Oracle.COM int n;
579*12068SRoger.Faulkner@Oracle.COM Cut_t* cut;
580*12068SRoger.Faulkner@Oracle.COM int mode = 0;
581*12068SRoger.Faulkner@Oracle.COM Delim_t wdelim;
582*12068SRoger.Faulkner@Oracle.COM Delim_t ldelim;
583*12068SRoger.Faulkner@Oracle.COM size_t reclen = 0;
5844887Schin
5854887Schin cmdinit(argc, argv, context, ERROR_CATALOG, 0);
586*12068SRoger.Faulkner@Oracle.COM wdelim.chr = '\t';
587*12068SRoger.Faulkner@Oracle.COM ldelim.chr = '\n';
588*12068SRoger.Faulkner@Oracle.COM wdelim.len = ldelim.len = 1;
589*12068SRoger.Faulkner@Oracle.COM for (;;)
5904887Schin {
591*12068SRoger.Faulkner@Oracle.COM switch (n = optget(argv, usage))
5924887Schin {
593*12068SRoger.Faulkner@Oracle.COM case 0:
594*12068SRoger.Faulkner@Oracle.COM break;
595*12068SRoger.Faulkner@Oracle.COM case 'b':
596*12068SRoger.Faulkner@Oracle.COM case 'c':
597*12068SRoger.Faulkner@Oracle.COM if(mode&C_FIELDS)
598*12068SRoger.Faulkner@Oracle.COM {
599*12068SRoger.Faulkner@Oracle.COM error(2, "f option already specified");
600*12068SRoger.Faulkner@Oracle.COM continue;
601*12068SRoger.Faulkner@Oracle.COM }
602*12068SRoger.Faulkner@Oracle.COM cp = opt_info.arg;
603*12068SRoger.Faulkner@Oracle.COM if(n=='b')
604*12068SRoger.Faulkner@Oracle.COM mode |= C_BYTES;
605*12068SRoger.Faulkner@Oracle.COM else
606*12068SRoger.Faulkner@Oracle.COM mode |= C_CHARS;
607*12068SRoger.Faulkner@Oracle.COM continue;
608*12068SRoger.Faulkner@Oracle.COM case 'D':
609*12068SRoger.Faulkner@Oracle.COM ldelim.str = opt_info.arg;
610*12068SRoger.Faulkner@Oracle.COM if (mbwide())
611*12068SRoger.Faulkner@Oracle.COM {
612*12068SRoger.Faulkner@Oracle.COM s = opt_info.arg;
613*12068SRoger.Faulkner@Oracle.COM ldelim.chr = mbchar(s);
614*12068SRoger.Faulkner@Oracle.COM if ((n = s - opt_info.arg) > 1)
615*12068SRoger.Faulkner@Oracle.COM {
616*12068SRoger.Faulkner@Oracle.COM ldelim.len = n;
617*12068SRoger.Faulkner@Oracle.COM continue;
618*12068SRoger.Faulkner@Oracle.COM }
619*12068SRoger.Faulkner@Oracle.COM }
620*12068SRoger.Faulkner@Oracle.COM ldelim.chr = *(unsigned char*)opt_info.arg;
621*12068SRoger.Faulkner@Oracle.COM ldelim.len = 1;
622*12068SRoger.Faulkner@Oracle.COM continue;
623*12068SRoger.Faulkner@Oracle.COM case 'd':
624*12068SRoger.Faulkner@Oracle.COM wdelim.str = opt_info.arg;
625*12068SRoger.Faulkner@Oracle.COM if (mbwide())
626*12068SRoger.Faulkner@Oracle.COM {
627*12068SRoger.Faulkner@Oracle.COM s = opt_info.arg;
628*12068SRoger.Faulkner@Oracle.COM wdelim.chr = mbchar(s);
629*12068SRoger.Faulkner@Oracle.COM if ((n = s - opt_info.arg) > 1)
630*12068SRoger.Faulkner@Oracle.COM {
631*12068SRoger.Faulkner@Oracle.COM wdelim.len = n;
632*12068SRoger.Faulkner@Oracle.COM continue;
633*12068SRoger.Faulkner@Oracle.COM }
634*12068SRoger.Faulkner@Oracle.COM }
635*12068SRoger.Faulkner@Oracle.COM wdelim.chr = *(unsigned char*)opt_info.arg;
636*12068SRoger.Faulkner@Oracle.COM wdelim.len = 1;
637*12068SRoger.Faulkner@Oracle.COM continue;
638*12068SRoger.Faulkner@Oracle.COM case 'f':
639*12068SRoger.Faulkner@Oracle.COM if(mode&(C_CHARS|C_BYTES))
640*12068SRoger.Faulkner@Oracle.COM {
641*12068SRoger.Faulkner@Oracle.COM error(2, "c option already specified");
642*12068SRoger.Faulkner@Oracle.COM continue;
643*12068SRoger.Faulkner@Oracle.COM }
644*12068SRoger.Faulkner@Oracle.COM cp = opt_info.arg;
645*12068SRoger.Faulkner@Oracle.COM mode |= C_FIELDS;
646*12068SRoger.Faulkner@Oracle.COM continue;
647*12068SRoger.Faulkner@Oracle.COM case 'n':
648*12068SRoger.Faulkner@Oracle.COM mode |= C_NOSPLIT;
649*12068SRoger.Faulkner@Oracle.COM continue;
650*12068SRoger.Faulkner@Oracle.COM case 'N':
651*12068SRoger.Faulkner@Oracle.COM mode |= C_NONEWLINE;
652*12068SRoger.Faulkner@Oracle.COM continue;
653*12068SRoger.Faulkner@Oracle.COM case 'R':
654*12068SRoger.Faulkner@Oracle.COM case 'r':
655*12068SRoger.Faulkner@Oracle.COM if(opt_info.num>0)
656*12068SRoger.Faulkner@Oracle.COM reclen = opt_info.num;
657*12068SRoger.Faulkner@Oracle.COM continue;
658*12068SRoger.Faulkner@Oracle.COM case 's':
659*12068SRoger.Faulkner@Oracle.COM mode |= C_SUPRESS;
660*12068SRoger.Faulkner@Oracle.COM continue;
661*12068SRoger.Faulkner@Oracle.COM case ':':
662*12068SRoger.Faulkner@Oracle.COM error(2, "%s", opt_info.arg);
663*12068SRoger.Faulkner@Oracle.COM break;
664*12068SRoger.Faulkner@Oracle.COM case '?':
665*12068SRoger.Faulkner@Oracle.COM error(ERROR_usage(2), "%s", opt_info.arg);
6664887Schin break;
6674887Schin }
6684887Schin break;
6694887Schin }
6704887Schin argv += opt_info.index;
6714887Schin if (error_info.errors)
6724887Schin error(ERROR_usage(2), "%s",optusage(NiL));
6734887Schin if(!cp)
6744887Schin {
6754887Schin error(2, "b, c or f option must be specified");
6764887Schin error(ERROR_usage(2), "%s", optusage(NiL));
6774887Schin }
6784887Schin if(!*cp)
6794887Schin error(3, "non-empty b, c or f option must be specified");
6804887Schin if((mode & (C_FIELDS|C_SUPRESS)) == C_SUPRESS)
6814887Schin error(3, "s option requires f option");
682*12068SRoger.Faulkner@Oracle.COM cut = cutinit(mode, cp, &wdelim, &ldelim, reclen);
6834887Schin if(cp = *argv)
6844887Schin argv++;
6854887Schin do
6864887Schin {
6874887Schin if(!cp || streq(cp,"-"))
6884887Schin fp = sfstdin;
6894887Schin else if(!(fp = sfopen(NiL,cp,"r")))
6904887Schin {
6914887Schin error(ERROR_system(0),"%s: cannot open",cp);
6924887Schin continue;
6934887Schin }
6944887Schin if(mode&C_FIELDS)
695*12068SRoger.Faulkner@Oracle.COM cutfields(cut,fp,sfstdout);
6964887Schin else
697*12068SRoger.Faulkner@Oracle.COM cutcols(cut,fp,sfstdout);
6984887Schin if(fp!=sfstdin)
6994887Schin sfclose(fp);
7008462SApril.Chin@Sun.COM } while(cp = *argv++);
7018462SApril.Chin@Sun.COM if (sfsync(sfstdout))
7028462SApril.Chin@Sun.COM error(ERROR_system(0), "write error");
703*12068SRoger.Faulkner@Oracle.COM return error_info.errors != 0;
7044887Schin }
705