Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/nl/nl.c	Lines:	0	120	0.0 %
Date:	2017-11-07	Branches:	0	91	0.0 %


/*	$OpenBSD: nl.c,v 1.6 2015/10/09 01:37:08 deraadt Exp $ */
/*	$NetBSD: nl.c,v 1.11 2011/08/16 12:00:46 christos Exp $	*/

/*-
 * Copyright (c) 1999 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Klaus Klein.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <err.h>
#include <errno.h>
#include <limits.h>
#include <locale.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>

typedef enum {
	number_all,		/* number all lines */
	number_nonempty,	/* number non-empty lines */
	number_none,		/* no line numbering */
	number_regex		/* number lines matching regular expression */
} numbering_type;

struct numbering_property {
	const char * const	name;		/* for diagnostics */
	numbering_type		type;		/* numbering type */
	regex_t			expr;		/* for type == number_regex */
};

/* line numbering formats */
#define FORMAT_LN	"%-*d"	/* left justified, leading zeros suppressed */
#define FORMAT_RN	"%*d"	/* right justified, leading zeros suppressed */
#define FORMAT_RZ	"%0*d"	/* right justified, leading zeros kept */

#define FOOTER		0
#define BODY		1
#define HEADER		2
#define NP_LAST		HEADER

static struct numbering_property numbering_properties[NP_LAST + 1] = {
	{ "footer",	number_none,	{ 0, 0, 0, 0 } },
	{ "body",	number_nonempty, { 0, 0, 0, 0 } },
	{ "header",	number_none,	{ 0, 0, 0, 0 } },
};

void		filter(void);
void		parse_numbering(const char *, int);
__dead void	usage(void);

/*
 * Delimiter characters that indicate the start of a logical page section.
 */
static char delim[2 * MB_LEN_MAX];
static int delimlen;

/*
 * Configurable parameters.
 */

/* line numbering format */
static const char *format = FORMAT_RN;

/* increment value used to number logical page lines */
static int incr = 1;

/* number of adjacent blank lines to be considered (and numbered) as one */
static unsigned int nblank = 1;

/* whether to restart numbering at logical page delimiters */
static int restart = 1;

/* characters used in separating the line number and the corrsp. text line */
static const char *sep = "\t";

/* initial value used to number logical page lines */
static int startnum = 1;

/* number of characters to be used for the line number */
/* should be unsigned but required signed by `*' precision conversion */
static int width = 6;


int
main(int argc, char *argv[])
{
	int c;
	size_t clen;
	char delim1[MB_LEN_MAX] = { '\\' }, delim2[MB_LEN_MAX] = { ':' };
	size_t delim1len = 1, delim2len = 1;
	const char *errstr;

	(void)setlocale(LC_ALL, "");

	if (pledge("stdio rpath flock cpath wpath", NULL) == -1)
		err(1, "pledge");

	while ((c = getopt(argc, argv, "pb:d:f:h:i:l:n:s:v:w:")) != -1) {
		switch (c) {
		case 'p':
			restart = 0;
			break;
		case 'b':
			parse_numbering(optarg, BODY);
			break;
		case 'd':
			clen = mbrlen(optarg, MB_CUR_MAX, NULL);
			if (clen == (size_t)-1 || clen == (size_t)-2)
				errc(EXIT_FAILURE, EILSEQ, NULL);
			if (clen != 0) {
				memcpy(delim1, optarg, delim1len = clen);
				clen = mbrlen(optarg + delim1len,
				    MB_CUR_MAX, NULL);
				if (clen == (size_t)-1 || clen == (size_t)-2)
					errc(EXIT_FAILURE, EILSEQ, NULL);
				if (clen != 0) {
					memcpy(delim2, optarg + delim1len,
					    delim2len = clen);
					if (optarg[delim1len + clen] != '\0') {
						errx(EXIT_FAILURE,
						    "invalid delimiter: %s",
						    optarg);
					}
				}
			}
			break;
		case 'f':
			parse_numbering(optarg, FOOTER);
			break;
		case 'h':
			parse_numbering(optarg, HEADER);
			break;
		case 'i':
			incr = strtonum(optarg, INT_MIN, INT_MAX, &errstr);
			if (errstr)
				errx(EXIT_FAILURE, "increment value is %s: %s",
				    errstr, optarg);
			break;
		case 'l':
			nblank = strtonum(optarg, 0, UINT_MAX, &errstr);
			if (errstr)
				errx(EXIT_FAILURE,
				    "blank line value is %s: %s",
				    errstr, optarg);
			break;
		case 'n':
			if (strcmp(optarg, "ln") == 0) {
				format = FORMAT_LN;
			} else if (strcmp(optarg, "rn") == 0) {
				format = FORMAT_RN;
			} else if (strcmp(optarg, "rz") == 0) {
				format = FORMAT_RZ;
			} else
				errx(EXIT_FAILURE,
				    "illegal format -- %s", optarg);
			break;
		case 's':
			sep = optarg;
			break;
		case 'v':
			startnum = strtonum(optarg, INT_MIN, INT_MAX, &errstr);
			if (errstr)
				errx(EXIT_FAILURE,
				    "initial logical page value is %s: %s",
				    errstr, optarg);
			break;
		case 'w':
			width = strtonum(optarg, 1, INT_MAX, &errstr);
			if (errstr)
				errx(EXIT_FAILURE, "width is %s: %s", errstr,
				    optarg);
			break;
		case '?':
		default:
			usage();
			/* NOTREACHED */
		}
	}
	argc -= optind;
	argv += optind;

	switch (argc) {
	case 0:
		break;
	case 1:
		if (strcmp(argv[0], "-") != 0 &&
		    freopen(argv[0], "r", stdin) == NULL)
			err(EXIT_FAILURE, "%s", argv[0]);
		break;
	default:
		usage();
		/* NOTREACHED */
	}

	/* Generate the delimiter sequence */
	memcpy(delim, delim1, delim1len);
	memcpy(delim + delim1len, delim2, delim2len);
	delimlen = delim1len + delim2len;

	/* Do the work. */
	filter();

	exit(EXIT_SUCCESS);
}

void
filter(void)
{
	char *buffer;
	size_t buffersize;
	ssize_t linelen;
	int line;		/* logical line number */
	int section;		/* logical page section */
	unsigned int adjblank;	/* adjacent blank lines */
	int donumber = 0, idx;

	adjblank = 0;
	line = startnum;
	section = BODY;

	buffer = NULL;
	buffersize = 0;
	while ((linelen = getline(&buffer, &buffersize, stdin)) > 0) {
		for (idx = FOOTER; idx <= NP_LAST; idx++) {
			/* Does it look like a delimiter? */
			if (delimlen * (idx + 1) > linelen)
				break;
			if (memcmp(buffer + delimlen * idx, delim,
			    delimlen) != 0)
				break;
			/* Was this the whole line? */
			if (buffer[delimlen * (idx + 1)] == '\n') {
				section = idx;
				adjblank = 0;
				if (restart)
					line = startnum;
				goto nextline;
			}
		}

		switch (numbering_properties[section].type) {
		case number_all:
			/*
			 * Doing this for number_all only is disputable, but
			 * the standard expresses an explicit dependency on
			 * `-b a' etc.
			 */
			if (buffer[0] == '\n' && ++adjblank < nblank)
				donumber = 0;
			else
				donumber = 1, adjblank = 0;
			break;
		case number_nonempty:
			donumber = (buffer[0] != '\n');
			break;
		case number_none:
			donumber = 0;
			break;
		case number_regex:
			donumber =
			    (regexec(&numbering_properties[section].expr,
			    buffer, 0, NULL, 0) == 0);
			break;
		}

		if (donumber) {
			(void)printf(format, width, line);
			line += incr;
			(void)fputs(sep, stdout);
		} else {
			(void)printf("%*s", width, "");
		}
		(void)fwrite(buffer, linelen, 1, stdout);

		if (ferror(stdout))
			err(EXIT_FAILURE, "output error");
nextline:
		;
	}

	if (ferror(stdin))
		err(EXIT_FAILURE, "input error");

	free(buffer);
}

/*
 * Various support functions.
 */

void
parse_numbering(const char *argstr, int section)
{
	int error;
	char errorbuf[NL_TEXTMAX];

	switch (argstr[0]) {
	case 'a':
		numbering_properties[section].type = number_all;
		break;
	case 'n':
		numbering_properties[section].type = number_none;
		break;
	case 't':
		numbering_properties[section].type = number_nonempty;
		break;
	case 'p':
		/* If there was a previous expression, throw it away. */
		if (numbering_properties[section].type == number_regex)
			regfree(&numbering_properties[section].expr);
		else
			numbering_properties[section].type = number_regex;

		/* Compile/validate the supplied regular expression. */
		if ((error = regcomp(&numbering_properties[section].expr,
		    &argstr[1], REG_NEWLINE|REG_NOSUB)) != 0) {
			(void)regerror(error,
			    &numbering_properties[section].expr,
			    errorbuf, sizeof(errorbuf));
			errx(EXIT_FAILURE,
			    "%s expr: %s -- %s",
			    numbering_properties[section].name, errorbuf,
			    &argstr[1]);
		}
		break;
	default:
		errx(EXIT_FAILURE,
		    "illegal %s line numbering type -- %s",
		    numbering_properties[section].name, argstr);
	}
}

__dead void
usage(void)
{
	(void)fprintf(stderr, "usage: %s [-p] [-b type] [-d delim] [-f type] "
	    "[-h type] [-i incr] [-l num]\n\t[-n format] [-s sep] "
	    "[-v startnum] [-w width] [file]\n", getprogname());
	exit(EXIT_FAILURE);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: nl.c,v 1.6 2015/10/09 01:37:08 deraadt Exp $ */
2			/* $NetBSD: nl.c,v 1.11 2011/08/16 12:00:46 christos Exp $ */
3
4			/*-
5			* Copyright (c) 1999 The NetBSD Foundation, Inc.
6			* All rights reserved.
7			*
8			* This code is derived from software contributed to The NetBSD Foundation
9			* by Klaus Klein.
10			*
11			* Redistribution and use in source and binary forms, with or without
12			* modification, are permitted provided that the following conditions
13			* are met:
14			* 1. Redistributions of source code must retain the above copyright
15			* notice, this list of conditions and the following disclaimer.
16			* 2. Redistributions in binary form must reproduce the above copyright
17			* notice, this list of conditions and the following disclaimer in the
18			* documentation and/or other materials provided with the distribution.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21			* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22			* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23			* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24			* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25			* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26			* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27			* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28			* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30			* POSSIBILITY OF SUCH DAMAGE.
31			*/
32
33			#include <err.h>
34			#include <errno.h>
35			#include <limits.h>
36			#include <locale.h>
37			#include <regex.h>
38			#include <stdio.h>
39			#include <stdlib.h>
40			#include <string.h>
41			#include <unistd.h>
42			#include <wchar.h>
43
44			typedef enum {
45			number_all, /* number all lines */
46			number_nonempty, /* number non-empty lines */
47			number_none, /* no line numbering */
48			number_regex /* number lines matching regular expression */
49			} numbering_type;
50
51			struct numbering_property {
52			const char * const name; /* for diagnostics */
53			numbering_type type; /* numbering type */
54			regex_t expr; /* for type == number_regex */
55			};
56
57			/* line numbering formats */
58			#define FORMAT_LN "%-d" / left justified, leading zeros suppressed */
59			#define FORMAT_RN "%d" / right justified, leading zeros suppressed */
60			#define FORMAT_RZ "%0d" / right justified, leading zeros kept */
61
62			#define FOOTER 0
63			#define BODY 1
64			#define HEADER 2
65			#define NP_LAST HEADER
66
67			static struct numbering_property numbering_properties[NP_LAST + 1] = {
68			{ "footer", number_none, { 0, 0, 0, 0 } },
69			{ "body", number_nonempty, { 0, 0, 0, 0 } },
70			{ "header", number_none, { 0, 0, 0, 0 } },
71			};
72
73			void filter(void);
74			void parse_numbering(const char *, int);
75			__dead void usage(void);
76
77			/*
78			* Delimiter characters that indicate the start of a logical page section.
79			*/
80			static char delim[2 * MB_LEN_MAX];
81			static int delimlen;
82
83			/*
84			* Configurable parameters.
85			*/
86
87			/* line numbering format */
88			static const char *format = FORMAT_RN;
89
90			/* increment value used to number logical page lines */
91			static int incr = 1;
92
93			/* number of adjacent blank lines to be considered (and numbered) as one */
94			static unsigned int nblank = 1;
95
96			/* whether to restart numbering at logical page delimiters */
97			static int restart = 1;
98
99			/* characters used in separating the line number and the corrsp. text line */
100			static const char *sep = "\t";
101
102			/* initial value used to number logical page lines */
103			static int startnum = 1;
104
105			/* number of characters to be used for the line number */
106			/* should be unsigned but required signed by `' precision conversion /
107			static int width = 6;
108
109
110			int
111			main(int argc, char *argv[])
112			{
113			int c;
114			size_t clen;
115			char delim1[MB_LEN_MAX] = { '\\' }, delim2[MB_LEN_MAX] = { ':' };
116			size_t delim1len = 1, delim2len = 1;
117			const char *errstr;
118
119			(void)setlocale(LC_ALL, "");
120
121			if (pledge("stdio rpath flock cpath wpath", NULL) == -1)
122			err(1, "pledge");
123
124			while ((c = getopt(argc, argv, "pb:d:f:h:i:l:n:s:v:w:")) != -1) {
125			switch (c) {
126			case 'p':
127			restart = 0;
128			break;
129			case 'b':
130			parse_numbering(optarg, BODY);
131			break;
132			case 'd':
133			clen = mbrlen(optarg, MB_CUR_MAX, NULL);
134			if (clen == (size_t)-1 \|\| clen == (size_t)-2)
135			errc(EXIT_FAILURE, EILSEQ, NULL);
136			if (clen != 0) {
137			memcpy(delim1, optarg, delim1len = clen);
138			clen = mbrlen(optarg + delim1len,
139			MB_CUR_MAX, NULL);
140			if (clen == (size_t)-1 \|\| clen == (size_t)-2)
141			errc(EXIT_FAILURE, EILSEQ, NULL);
142			if (clen != 0) {
143			memcpy(delim2, optarg + delim1len,
144			delim2len = clen);
145			if (optarg[delim1len + clen] != '\0') {
146			errx(EXIT_FAILURE,
147			"invalid delimiter: %s",
148			optarg);
149			}
150			}
151			}
152			break;
153			case 'f':
154			parse_numbering(optarg, FOOTER);
155			break;
156			case 'h':
157			parse_numbering(optarg, HEADER);
158			break;
159			case 'i':
160			incr = strtonum(optarg, INT_MIN, INT_MAX, &errstr);
161			if (errstr)
162			errx(EXIT_FAILURE, "increment value is %s: %s",
163			errstr, optarg);
164			break;
165			case 'l':
166			nblank = strtonum(optarg, 0, UINT_MAX, &errstr);
167			if (errstr)
168			errx(EXIT_FAILURE,
169			"blank line value is %s: %s",
170			errstr, optarg);
171			break;
172			case 'n':
173			if (strcmp(optarg, "ln") == 0) {
174			format = FORMAT_LN;
175			} else if (strcmp(optarg, "rn") == 0) {
176			format = FORMAT_RN;
177			} else if (strcmp(optarg, "rz") == 0) {
178			format = FORMAT_RZ;
179			} else
180			errx(EXIT_FAILURE,
181			"illegal format -- %s", optarg);
182			break;
183			case 's':
184			sep = optarg;
185			break;
186			case 'v':
187			startnum = strtonum(optarg, INT_MIN, INT_MAX, &errstr);
188			if (errstr)
189			errx(EXIT_FAILURE,
190			"initial logical page value is %s: %s",
191			errstr, optarg);
192			break;
193			case 'w':
194			width = strtonum(optarg, 1, INT_MAX, &errstr);
195			if (errstr)
196			errx(EXIT_FAILURE, "width is %s: %s", errstr,
197			optarg);
198			break;
199			case '?':
200			default:
201			usage();
202			/* NOTREACHED */
203			}
204			}
205			argc -= optind;
206			argv += optind;
207
208			switch (argc) {
209			case 0:
210			break;
211			case 1:
212			if (strcmp(argv[0], "-") != 0 &&
213			freopen(argv[0], "r", stdin) == NULL)
214			err(EXIT_FAILURE, "%s", argv[0]);
215			break;
216			default:
217			usage();
218			/* NOTREACHED */
219			}
220
221			/* Generate the delimiter sequence */
222			memcpy(delim, delim1, delim1len);
223			memcpy(delim + delim1len, delim2, delim2len);
224			delimlen = delim1len + delim2len;
225
226			/* Do the work. */
227			filter();
228
229			exit(EXIT_SUCCESS);
230			}
231
232			void
233			filter(void)
234			{
235			char *buffer;
236			size_t buffersize;
237			ssize_t linelen;
238			int line; /* logical line number */
239			int section; /* logical page section */
240			unsigned int adjblank; /* adjacent blank lines */
241			int donumber = 0, idx;
242
243			adjblank = 0;
244			line = startnum;
245			section = BODY;
246
247			buffer = NULL;
248			buffersize = 0;
249			while ((linelen = getline(&buffer, &buffersize, stdin)) > 0) {
250			for (idx = FOOTER; idx <= NP_LAST; idx++) {
251			/* Does it look like a delimiter? */
252			if (delimlen * (idx + 1) > linelen)
253			break;
254			if (memcmp(buffer + delimlen * idx, delim,
255			delimlen) != 0)
256			break;
257			/* Was this the whole line? */
258			if (buffer[delimlen * (idx + 1)] == '\n') {
259			section = idx;
260			adjblank = 0;
261			if (restart)
262			line = startnum;
263			goto nextline;
264			}
265			}
266
267			switch (numbering_properties[section].type) {
268			case number_all:
269			/*
270			* Doing this for number_all only is disputable, but
271			* the standard expresses an explicit dependency on
272			* `-b a' etc.
273			*/
274			if (buffer[0] == '\n' && ++adjblank < nblank)
275			donumber = 0;
276			else
277			donumber = 1, adjblank = 0;
278			break;
279			case number_nonempty:
280			donumber = (buffer[0] != '\n');
281			break;
282			case number_none:
283			donumber = 0;
284			break;
285			case number_regex:
286			donumber =
287			(regexec(&numbering_properties[section].expr,
288			buffer, 0, NULL, 0) == 0);
289			break;
290			}
291
292			if (donumber) {
293			(void)printf(format, width, line);
294			line += incr;
295			(void)fputs(sep, stdout);
296			} else {
297			(void)printf("%*s", width, "");
298			}
299			(void)fwrite(buffer, linelen, 1, stdout);
300
301			if (ferror(stdout))
302			err(EXIT_FAILURE, "output error");
303			nextline:
304			;
305			}
306
307			if (ferror(stdin))
308			err(EXIT_FAILURE, "input error");
309
310			free(buffer);
311			}
312
313			/*
314			* Various support functions.
315			*/
316
317			void
318			parse_numbering(const char *argstr, int section)
319			{
320			int error;
321			char errorbuf[NL_TEXTMAX];
322
323			switch (argstr[0]) {
324			case 'a':
325			numbering_properties[section].type = number_all;
326			break;
327			case 'n':
328			numbering_properties[section].type = number_none;
329			break;
330			case 't':
331			numbering_properties[section].type = number_nonempty;
332			break;
333			case 'p':
334			/* If there was a previous expression, throw it away. */
335			if (numbering_properties[section].type == number_regex)
336			regfree(&numbering_properties[section].expr);
337			else
338			numbering_properties[section].type = number_regex;
339
340			/* Compile/validate the supplied regular expression. */
341			if ((error = regcomp(&numbering_properties[section].expr,
342			&argstr[1], REG_NEWLINE\|REG_NOSUB)) != 0) {
343			(void)regerror(error,
344			&numbering_properties[section].expr,
345			errorbuf, sizeof(errorbuf));
346			errx(EXIT_FAILURE,
347			"%s expr: %s -- %s",
348			numbering_properties[section].name, errorbuf,
349			&argstr[1]);
350			}
351			break;
352			default:
353			errx(EXIT_FAILURE,
354			"illegal %s line numbering type -- %s",
355			numbering_properties[section].name, argstr);
356			}
357			}
358
359			__dead void
360			usage(void)
361			{
362			(void)fprintf(stderr, "usage: %s [-p] [-b type] [-d delim] [-f type] "
363			"[-h type] [-i incr] [-l num]\n\t[-n format] [-s sep] "
364			"[-v startnum] [-w width] [file]\n", getprogname());
365			exit(EXIT_FAILURE);
366			}