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Diffstat (limited to 'usr/src/lib/libcmd/common/wc.c')
| -rw-r--r-- | usr/src/lib/libcmd/common/wc.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/usr/src/lib/libcmd/common/wc.c b/usr/src/lib/libcmd/common/wc.c new file mode 100644 index 0000000000..9d4b2567c7 --- /dev/null +++ b/usr/src/lib/libcmd/common/wc.c @@ -0,0 +1,186 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1992-2007 AT&T Knowledge Ventures * +* and is licensed under the * +* Common Public License, Version 1.0 * +* by AT&T Knowledge Ventures * +* * +* A copy of the License is available at * +* http://www.opensource.org/licenses/cpl1.0.txt * +* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped +/* + * David Korn + * AT&T Bell Laboratories + * + * count the number of bytes, words, and lines in a file + */ + +static const char usage[] = +"[-?\n@(#)$Id: wc (AT&T Research) 2006-08-25 $\n]" +USAGE_LICENSE +"[+NAME?wc - print the number of bytes, words, and lines in files]" +"[+DESCRIPTION?\bwc\b reads one or more input files and, by default, " + "for each file writes a line containing the number of newlines, " + "\aword\as, and bytes contained in each file followed by the " + "file name to standard output in that order. A \aword\a is " + "defined to be a non-zero length string delimited by \bisspace\b(3) " + "characters.]" +"[+?If more than one file is specified, \bwc\b writes a total count " + "for all of the named files with \btotal\b written instead " + "of the file name.]" +"[+?By default, \bwc\b writes all three counts. Options can specified " + "so that only certain counts are written. The options \b-c\b " + "and \b-m\b are mutually exclusive.]" +"[+?If no \afile\a is given, or if the \afile\a is \b-\b, \bwc\b " + "reads from standard input and no filename is written to standard " + "output. The start of the file is defined as the current offset.]" +"[l:lines?List the line counts.]" +"[w:words?List the word counts.]" +"[c:bytes|chars:chars?List the byte counts.]" +"[m|C:multibyte-chars?List the character counts.]" +"[q:quiet?Suppress invalid multibyte character warnings.]" +"[L:longest-line|max-line-length?List the longest line length.]" +"\n" +"\n[file ...]\n" +"\n" +"[+EXIT STATUS?]{" + "[+0?All files processed successfully.]" + "[+>0?One or more files failed to open or could not be read.]" +"}" +"[+SEE ALSO?\bcat\b(1), \bisspace\b(3)]" +; + + +#include <cmd.h> +#include <wc.h> +#include <ls.h> + +#define ERRORMAX 125 + +static void printout(register Wc_t *wp, register char *name,register int mode) +{ + if(mode&WC_LINES) + sfprintf(sfstdout," %7I*d",sizeof(wp->lines),wp->lines); + if(mode&WC_WORDS) + sfprintf(sfstdout," %7I*d",sizeof(wp->words),wp->words); + if(mode&WC_CHARS) + sfprintf(sfstdout," %7I*d",sizeof(wp->chars),wp->chars); + if(mode&WC_LONGEST) + sfprintf(sfstdout," %7I*d",sizeof(wp->chars),wp->longest); + if(name) + sfprintf(sfstdout," %s",name); + sfputc(sfstdout,'\n'); +} + +int +b_wc(int argc,register char **argv, void* context) +{ + register char *cp; + register int mode=0, n; + register Wc_t *wp; + Sfio_t *fp; + Sfoff_t tlines=0, twords=0, tchars=0; + struct stat statb; + + cmdinit(argc, argv, context, ERROR_CATALOG, 0); + while (n = optget(argv,usage)) switch (n) + { + case 'c': + mode |= WC_CHARS; + break; + case 'l': + mode |= WC_LINES; + break; + case 'L': + mode |= WC_LONGEST; + break; + case 'm': + case 'C': + mode |= WC_MBYTE; + break; + case 'q': + mode |= WC_QUIET; + break; + case 'w': + mode |= WC_WORDS; + break; + case ':': + error(2, "%s", opt_info.arg); + break; + case '?': + error(ERROR_usage(2), "%s", opt_info.arg); + break; + } + argv += opt_info.index; + if (error_info.errors) + error(ERROR_usage(2), "%s", optusage(NiL)); + if(mode&WC_MBYTE) + { + if(mode&WC_CHARS) + error(2, "-c and -C are mutually exclusive"); + mode |= WC_CHARS; + if(!mbwide()) + { + mode &= ~WC_MBYTE; + setlocale(LC_CTYPE, "C"); + } + } + if(!(mode&(WC_WORDS|WC_CHARS|WC_LINES|WC_MBYTE|WC_LONGEST))) + mode |= (WC_WORDS|WC_CHARS|WC_LINES); + if(!(wp = wc_init(mode))) + error(3,"internal error"); + if(!(mode&WC_WORDS)) + { + memzero(wp->space, (1<<CHAR_BIT)); + wp->space['\n'] = -1; + } + if(cp = *argv) + argv++; + do + { + if(!cp || streq(cp,"-")) + fp = sfstdin; + else if(!(fp = sfopen(NiL,cp,"r"))) + { + error(ERROR_system(0),"%s: cannot open",cp); + continue; + } + if(cp) + n++; + if(!(mode&(WC_WORDS|WC_LINES|WC_MBYTE|WC_LONGEST)) && fstat(sffileno(fp),&statb)>=0 + && S_ISREG(statb.st_mode)) + { + wp->chars = statb.st_size - lseek(sffileno(fp),0L,1); + lseek(sffileno(fp),0L,2); + } + else + wc_count(wp, fp, cp); + if(fp!=sfstdin) + sfclose(fp); + tchars += wp->chars; + twords += wp->words; + tlines += wp->lines; + printout(wp,cp,mode); + } + while(cp= *argv++); + if(n>1) + { + wp->lines = tlines; + wp->chars = tchars; + wp->words = twords; + printout(wp,"total",mode); + } + return(error_info.errors<ERRORMAX?error_info.errors:ERRORMAX); +} + |