Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/hexdump/parse.c	Lines:	129	224	57.6 %
Date:	2017-11-13	Branches:	113	219	51.6 %


/*	$OpenBSD: parse.c,v 1.22 2016/09/04 16:41:43 tb Exp $	*/
/*	$NetBSD: parse.c,v 1.12 2001/12/07 13:37:39 bjh21 Exp $	*/

/*
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <sys/types.h>
#include <sys/file.h>

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "hexdump.h"

FU *endfu;					/* format at end-of-data */

static __dead void	 badcnt(char *);
static __dead void	 badconv(char *);
static __dead void	 badfmt(const char *);
static __dead void	 badsfmt(void);
static void		 escape(char *);

void
addfile(char *name)
{
	FILE *fp;
	size_t len;
	char *buf, *lbuf, *p;

	if ((fp = fopen(name, "r")) == NULL)
		err(1, "fopen %s", name);

	lbuf = NULL;
	while ((buf = fgetln(fp, &len))) {
		if (buf[len - 1] == '\n')
			buf[len - 1] = '\0';
		else {
			/* EOF without EOL, copy and add the NUL */
			if ((lbuf = malloc(len + 1)) == NULL)
				err(1, NULL);
			memcpy(lbuf, buf, len);
			lbuf[len] = '\0';
			buf = lbuf;
		}
		for (p = buf; isspace((unsigned char)*p); ++p);
		if (!*p || *p == '#')
			continue;
		add(p);
	}
	free(lbuf);
	(void)fclose(fp);
}

void
add(const char *fmt)
{
	const char *p;
	static FS **nextfs;
	FS *tfs;
	FU *tfu, **nextfu;
	const char *savep;

	/* start new linked list of format units */
	if ((tfs = calloc(1, sizeof(FS))) == NULL)
		err(1, NULL);
	if (!fshead)
		fshead = tfs;
	else
		*nextfs = tfs;
	nextfs = &tfs->nextfs;
	nextfu = &tfs->nextfu;

	/* take the format string and break it up into format units */
	for (p = fmt;;) {
		/* skip leading white space */
		for (; isspace((unsigned char)*p); ++p);
		if (!*p)
			break;

		/* allocate a new format unit and link it in */
		if ((tfu = calloc(1, sizeof(FU))) == NULL)
			err(1, NULL);
		*nextfu = tfu;
		nextfu = &tfu->nextfu;
		tfu->reps = 1;

		/* if leading digit, repetition count */
		if (isdigit((unsigned char)*p)) {
			for (savep = p; isdigit((unsigned char)*p); ++p);
			if (!isspace((unsigned char)*p) && *p != '/')
				badfmt(fmt);
			/* may overwrite either white space or slash */
			tfu->reps = atoi(savep);
			tfu->flags = F_SETREP;
			/* skip trailing white space */
			for (++p; isspace((unsigned char)*p); ++p);
		}

		/* skip slash and trailing white space */
		if (*p == '/')
			while (isspace((unsigned char)*++p));

		/* byte count */
		if (isdigit((unsigned char)*p)) {
			for (savep = p; isdigit((unsigned char)*p); ++p);
			if (!isspace((unsigned char)*p))
				badfmt(fmt);
			tfu->bcnt = atoi(savep);
			/* skip trailing white space */
			for (++p; isspace((unsigned char)*p); ++p);
		}

		/* format */
		if (*p != '"')
			badfmt(fmt);
		for (savep = ++p; *p != '"';)
			if (*p++ == 0)
				badfmt(fmt);
		if ((tfu->fmt = strndup(savep, p - savep)) == NULL)
			err(1, NULL);
		escape(tfu->fmt);
		p++;
	}
}

static const char *spec = ".#-+ 0123456789";

int
size(FS *fs)
{
	FU *fu;
	int bcnt, cursize;
	char *fmt;
	int prec;

	/* figure out the data block size needed for each format unit */
	for (cursize = 0, fu = fs->nextfu; fu; fu = fu->nextfu) {
		if (fu->bcnt) {
			cursize += fu->bcnt * fu->reps;
			continue;
		}
		for (bcnt = prec = 0, fmt = fu->fmt; *fmt; ++fmt) {
			if (*fmt != '%')
				continue;
			/*
			 * skip any special chars -- save precision in
			 * case it's a %s format.
			 */
			while (*++fmt && strchr(spec + 1, *fmt));
			if (*fmt == '.' && isdigit((unsigned char)*++fmt)) {
				prec = atoi(fmt);
				while (isdigit((unsigned char)*++fmt));
			}
			switch(*fmt) {
			case 'c':
				bcnt += 1;
				break;
			case 'd': case 'i': case 'o': case 'u':
			case 'x': case 'X':
				bcnt += 4;
				break;
			case 'e': case 'E': case 'f': case 'g': case 'G':
				bcnt += 8;
				break;
			case 's':
				bcnt += prec;
				break;
			case '_':
				switch(*++fmt) {
				case 'c': case 'p': case 'u':
					bcnt += 1;
					break;
				}
			}
		}
		cursize += bcnt * fu->reps;
	}
	return (cursize);
}

void
rewrite(FS *fs)
{
	enum { NOTOKAY, USEBCNT, USEPREC } sokay;
	PR *pr, **nextpr;
	FU *fu;
	char *p1, *p2;
	char savech, *fmtp, cs[4];
	int nconv, prec;

	nextpr = NULL;
	prec = 0;
	for (fu = fs->nextfu; fu; fu = fu->nextfu) {
		/*
		 * Break each format unit into print units; each conversion
		 * character gets its own.
		 */
		for (nconv = 0, fmtp = fu->fmt; *fmtp; nextpr = &pr->nextpr) {
			if ((pr = calloc(1, sizeof(PR))) == NULL)
				err(1, NULL);
			if (!fu->nextpr)
				fu->nextpr = pr;
			else
				*nextpr = pr;

			/* Skip preceding text and up to the next % sign. */
			for (p1 = fmtp; *p1 && *p1 != '%'; ++p1);

			/* Only text in the string. */
			if (!*p1) {
				pr->fmt = fmtp;
				pr->flags = F_TEXT;
				break;
			}

			/*
			 * Get precision for %s -- if have a byte count, don't
			 * need it.
			 */
			if (fu->bcnt) {
				sokay = USEBCNT;
				/* Skip to conversion character. */
				for (++p1; *p1 && strchr(spec, *p1); ++p1);
			} else {
				/* Skip any special chars, field width. */
				while (*++p1 && strchr(spec + 1, *p1));
				if (*p1 == '.' &&
				    isdigit((unsigned char)*++p1)) {
					sokay = USEPREC;
					prec = atoi(p1);
					while (isdigit((unsigned char)*++p1))
						continue;
				} else
					sokay = NOTOKAY;
			}

			p2 = *p1 ? p1 + 1 : p1;	/* Set end pointer. */
			cs[0] = *p1;		/* Set conversion string. */
			cs[1] = '\0';

			/*
			 * Figure out the byte count for each conversion;
			 * rewrite the format as necessary, set up blank-
			 * padding for end of data.
			 */
			switch(cs[0]) {
			case 'c':
				pr->flags = F_CHAR;
				switch(fu->bcnt) {
				case 0: case 1:
					pr->bcnt = 1;
					break;
				default:
					p1[1] = '\0';
					badcnt(p1);
				}
				break;
			case 'd': case 'i':
			case 'o': case 'u': case 'x': case 'X':
				if (cs[0] == 'd' || cs[0] == 'i')
					pr->flags = F_INT;
				else
					pr->flags = F_UINT;

				cs[3] = '\0';
				cs[2] = cs[0];
				cs[1] = 'l';
				cs[0] = 'l';
				switch(fu->bcnt) {
				case 0: case 4:
					pr->bcnt = 4;
					break;
				case 1:
					pr->bcnt = 1;
					break;
				case 2:
					pr->bcnt = 2;
					break;
				case 8:
					pr->bcnt = 8;
					break;
				default:
					p1[1] = '\0';
					badcnt(p1);
				}
				break;
			case 'e': case 'E': case 'f': case 'g': case 'G':
				pr->flags = F_DBL;
				switch(fu->bcnt) {
				case 0: case 8:
					pr->bcnt = 8;
					break;
				case 4:
					pr->bcnt = 4;
					break;
				default:
					p1[1] = '\0';
					badcnt(p1);
				}
				break;
			case 's':
				pr->flags = F_STR;
				switch(sokay) {
				case NOTOKAY:
					badsfmt();
				case USEBCNT:
					pr->bcnt = fu->bcnt;
					break;
				case USEPREC:
					pr->bcnt = prec;
					break;
				}
				break;
			case '_':
				++p2;
				switch(p1[1]) {
				case 'A':
					endfu = fu;
					fu->flags |= F_IGNORE;
					/* FALLTHROUGH */
				case 'a':
					pr->flags = F_ADDRESS;
					++p2;
					switch(p1[2]) {
					case 'd': case 'o': case'x':
						cs[0] = 'l';
						cs[1] = 'l';
						cs[2] = p1[2];
						cs[3] = '\0';
						break;
					default:
						if (p1[2])
							p1[3] = '\0';
						badconv(p1);
					}
					break;
				case 'c':
				case 'p':
				case 'u':
					if (p1[1] == 'c') {
						pr->flags = F_C;
						/* cs[0] = 'c';	set in conv_c */
					} else if (p1[1] == 'p') {
						pr->flags = F_P;
						cs[0] = 'c';
					} else {
						pr->flags = F_U;
						/* cs[0] = 'c';	set in conv_u */
					}

					switch(fu->bcnt) {
					case 0: case 1:
						pr->bcnt = 1;
						break;
					default:
						p1[2] = '\0';
						badcnt(p1);
					}
					break;
				default:
					if (p1[1])
						p1[2] = '\0';
					badconv(p1);
				}
				break;
			default:
				if (cs[0])
					p1[1] = '\0';
				badconv(p1);
			}

			/*
			 * Copy to PR format string, set conversion character
			 * pointer, update original.
			 */
			savech = *p2;
			p1[0] = '\0';
			if (asprintf(&pr->fmt, "%s%s", fmtp, cs) == -1)
				err(1, NULL);
			*p2 = savech;
			pr->cchar = pr->fmt + (p1 - fmtp);
			fmtp = p2;

			/* Only one conversion character if byte count. */
			if (!(pr->flags&F_ADDRESS) && fu->bcnt && nconv++)
				errx(1,
			    "byte count with multiple conversion characters");
		}
		/*
		 * If format unit byte count not specified, figure it out
		 * so can adjust rep count later.
		 */
		if (!fu->bcnt)
			for (pr = fu->nextpr; pr; pr = pr->nextpr)
				fu->bcnt += pr->bcnt;
	}
	/*
	 * If the format string interprets any data at all, and it's
	 * not the same as the blocksize, and its last format unit
	 * interprets any data at all, and has no iteration count,
	 * repeat it as necessary.
	 *
	 * If, rep count is greater than 1, no trailing whitespace
	 * gets output from the last iteration of the format unit.
	 */
	for (fu = fs->nextfu; fu; fu = fu->nextfu) {
		if (!fu->nextfu && fs->bcnt < blocksize &&
		    !(fu->flags&F_SETREP) && fu->bcnt)
			fu->reps += (blocksize - fs->bcnt) / fu->bcnt;
		if (fu->reps > 1) {
			if (!fu->nextpr)
				break;
			for (pr = fu->nextpr;; pr = pr->nextpr)
				if (!pr->nextpr)
					break;
			for (p1 = pr->fmt, p2 = NULL; *p1; ++p1)
				p2 = isspace((unsigned char)*p1) ? p1 : NULL;
			if (p2)
				pr->nospace = p2;
		}
	}
#ifdef DEBUG
	for (fu = fs->nextfu; fu; fu = fu->nextfu) {
		(void)printf("fmt:");
		for (pr = fu->nextpr; pr; pr = pr->nextpr)
			(void)printf(" {%s}", pr->fmt);
		(void)printf("\n");
	}
#endif
}

static void
escape(char *p1)
{
	char *p2;

	/* alphabetic escape sequences have to be done in place */
	for (p2 = p1;; ++p1, ++p2) {
		if (!*p1) {
			*p2 = *p1;
			break;
		}
		if (*p1 == '\\') {
			switch(*++p1) {
			case '\0':
				*p2++ = '\\';
				*p2 = '\0';
				return;	/* incomplete escape sequence */
			case 'a':
			     /* *p2 = '\a'; */
				*p2 = '\007';
				break;
			case 'b':
				*p2 = '\b';
				break;
			case 'f':
				*p2 = '\f';
				break;
			case 'n':
				*p2 = '\n';
				break;
			case 'r':
				*p2 = '\r';
				break;
			case 't':
				*p2 = '\t';
				break;
			case 'v':
				*p2 = '\v';
				break;
			default:
				*p2 = *p1;
				break;
			}
		} else
			*p2 = *p1;
	}
}

static __dead void
badcnt(char *s)
{
	errx(1, "%s: bad byte count", s);
}

static __dead void
badsfmt(void)
{
	errx(1, "%%s: requires a precision or a byte count");
}

static __dead void
badfmt(const char *fmt)
{
	errx(1, "\"%s\": bad format", fmt);
}

static __dead void
badconv(char *ch)
{
	errx(1, "%%%s: bad conversion character", ch);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: parse.c,v 1.22 2016/09/04 16:41:43 tb Exp $ */
2			/* $NetBSD: parse.c,v 1.12 2001/12/07 13:37:39 bjh21 Exp $ */
3
4			/*
5			* Copyright (c) 1989, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			* 1. Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			* 3. Neither the name of the University nor the names of its contributors
17			* may be used to endorse or promote products derived from this software
18			* without specific prior written permission.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30			* SUCH DAMAGE.
31			*/
32
33			#include <sys/types.h>
34			#include <sys/file.h>
35
36			#include <ctype.h>
37			#include <err.h>
38			#include <errno.h>
39			#include <fcntl.h>
40			#include <stdio.h>
41			#include <stdlib.h>
42			#include <string.h>
43
44			#include "hexdump.h"
45
46			FU endfu; / format at end-of-data */
47
48			static __dead void badcnt(char *);
49			static __dead void badconv(char *);
50			static __dead void badfmt(const char *);
51			static __dead void badsfmt(void);
52			static void escape(char *);
53
54			void
55			addfile(char *name)
56			{
57			FILE *fp;
58			size_t len;
59			char buf, lbuf, *p;
60
61			if ((fp = fopen(name, "r")) == NULL)
62			err(1, "fopen %s", name);
63
64			lbuf = NULL;
65			while ((buf = fgetln(fp, &len))) {
66			if (buf[len - 1] == '\n')
67			buf[len - 1] = '\0';
68			else {
69			/* EOF without EOL, copy and add the NUL */
70			if ((lbuf = malloc(len + 1)) == NULL)
71			err(1, NULL);
72			memcpy(lbuf, buf, len);
73			lbuf[len] = '\0';
74			buf = lbuf;
75			}
76			for (p = buf; isspace((unsigned char)*p); ++p);
77			if (!p \|\| p == '#')
78			continue;
79			add(p);
80			}
81			free(lbuf);
82			(void)fclose(fp);
83			}
84
85			void
86			add(const char *fmt)
87			{
88			const char *p;
89			static FS **nextfs;
90			FS *tfs;
91			FU tfu, *nextfu;
92			const char *savep;
93
94			/* start new linked list of format units */
95	✗✓	16354	if ((tfs = calloc(1, sizeof(FS))) == NULL)
96			err(1, NULL);
97		16354	if (!fshead)
98			fshead = tfs;
99			else
100		8177	*nextfs = tfs;
101		8177	nextfs = &tfs->nextfs;
102		8177	nextfu = &tfs->nextfu;
103
104			/* take the format string and break it up into format units */
105		29149	for (p = fmt;;) {
106			/* skip leading white space */
107	✓✓	89006	for (; isspace((unsigned char)*p); ++p);
108	✓✓	29149	if (!*p)
109			break;
110
111			/* allocate a new format unit and link it in */
112	✗✓	20972	if ((tfu = calloc(1, sizeof(FU))) == NULL)
113			err(1, NULL);
114		20972	*nextfu = tfu;
115		20972	nextfu = &tfu->nextfu;
116		20972	tfu->reps = 1;
117
118			/* if leading digit, repetition count */
119	✓✓	20972	if (isdigit((unsigned char)*p)) {
120	✓✓	35826	for (savep = p; isdigit((unsigned char)*p); ++p);
121	✓✗✗✓	15354	if (!isspace((unsigned char)p) && p != '/')
122			badfmt(fmt);
123			/* may overwrite either white space or slash */
124		7677	tfu->reps = atoi(savep);
125		7677	tfu->flags = F_SETREP;
126			/* skip trailing white space */
127	✗✓	15354	for (++p; isspace((unsigned char)*p); ++p);
128			}
129
130			/* skip slash and trailing white space */
131	✗✓	20972	if (*p == '/')
132			while (isspace((unsigned char)*++p));
133
134			/* byte count */
135	✓✓	20972	if (isdigit((unsigned char)*p)) {
136	✓✓	30708	for (savep = p; isdigit((unsigned char)*p); ++p);
137	✗✓	7677	if (!isspace((unsigned char)*p))
138			badfmt(fmt);
139		7677	tfu->bcnt = atoi(savep);
140			/* skip trailing white space */
141	✗✓	15354	for (++p; isspace((unsigned char)*p); ++p);
142			}
143
144			/* format */
145	✗✓	20972	if (*p != '"')
146			badfmt(fmt);
147	✓✓	248664	for (savep = ++p; *p != '"';)
148	✗✓	103360	if (*p++ == 0)
149			badfmt(fmt);
150	✗✓	20972	if ((tfu->fmt = strndup(savep, p - savep)) == NULL)
151			err(1, NULL);
152		20972	escape(tfu->fmt);
153		20972	p++;
154			}
155		8177	}
156
157			static const char *spec = ".#-+ 0123456789";
158
159			int
160			size(FS *fs)
161			{
162			FU *fu;
163			int bcnt, cursize;
164			char *fmt;
165			int prec;
166
167			/* figure out the data block size needed for each format unit */
168	✓✓	66475	for (cursize = 0, fu = fs->nextfu; fu; fu = fu->nextfu) {
169	✓✓	20972	if (fu->bcnt) {
170		7677	cursize += fu->bcnt * fu->reps;
171		7677	continue;
172			}
173	✓✓	99242	for (bcnt = prec = 0, fmt = fu->fmt; *fmt; ++fmt) {
174	✓✓	36326	if (*fmt != '%')
175			continue;
176			/*
177			* skip any special chars -- save precision in
178			* case it's a %s format.
179			*/
180	✓✗✓✓	47562	while (++fmt && strchr(spec + 1, fmt));
181	✓✓✓✗	10736	if (fmt == '.' && isdigit((unsigned char)++fmt)) {
182		5118	prec = atoi(fmt);
183	✗✓	10236	while (isdigit((unsigned char)*++fmt));
184			}
185	✗✗✗✗ ✗✗✓✗ ✗✗✗✗ ✗✓✓	6118	switch(*fmt) {
186			case 'c':
187			bcnt += 1;
188			break;
189			case 'd': case 'i': case 'o': case 'u':
190			case 'x': case 'X':
191		500	bcnt += 4;
192		500	break;
193			case 'e': case 'E': case 'f': case 'g': case 'G':
194			bcnt += 8;
195			break;
196			case 's':
197			bcnt += prec;
198			break;
199			case '_':
200	✗✗✗✓	35826	switch(*++fmt) {
201			case 'c': case 'p': case 'u':
202			bcnt += 1;
203			break;
204			}
205			}
206			}
207		13295	cursize += bcnt * fu->reps;
208		13295	}
209		8177	return (cursize);
210			}
211
212			void
213			rewrite(FS *fs)
214			{
215			enum { NOTOKAY, USEBCNT, USEPREC } sokay;
216			PR pr, *nextpr;
217			FU *fu;
218			char p1, p2;
219		16354	char savech, *fmtp, cs[4];
220			int nconv, prec;
221
222			nextpr = NULL;
223			prec = 0;
224	✓✓	58298	for (fu = fs->nextfu; fu; fu = fu->nextfu) {
225			/*
226			* Break each format unit into print units; each conversion
227			* character gets its own.
228			*/
229	✓✓	68534	for (nconv = 0, fmtp = fu->fmt; *fmtp; nextpr = &pr->nextpr) {
230	✗✓	31208	if ((pr = calloc(1, sizeof(PR))) == NULL)
231			err(1, NULL);
232		31208	if (!fu->nextpr)
233			fu->nextpr = pr;
234			else
235			*nextpr = pr;
236
237			/* Skip preceding text and up to the next % sign. */
238	✓✓✓✓	167835	for (p1 = fmtp; p1 && p1 != '%'; ++p1);
239
240			/* Only text in the string. */
241	✓✓	31208	if (!*p1) {
242		17913	pr->fmt = fmtp;
243		17913	pr->flags = F_TEXT;
244		17913	break;
245			}
246
247			/*
248			* Get precision for %s -- if have a byte count, don't
249			* need it.
250			*/
251	✓✓	13295	if (fu->bcnt) {
252			sokay = USEBCNT;
253			/* Skip to conversion character. */
254	✓✗✓✓	53739	for (++p1; p1 && strchr(spec, p1); ++p1);
255			} else {
256			/* Skip any special chars, field width. */
257	✓✗✓✓	47562	while (++p1 && strchr(spec + 1, p1));
258	✓✓✓✗	10736	if (*p1 == '.' &&
259		5118	isdigit((unsigned char)*++p1)) {
260			sokay = USEPREC;
261		5118	prec = atoi(p1);
262	✗✓	10236	while (isdigit((unsigned char)*++p1))
263			continue;
264			} else
265			sokay = NOTOKAY;
266			}
267
268		13295	p2 = p1 ? p1 + 1 : p1; / Set end pointer. */
269		13295	cs[0] = p1; / Set conversion string. */
270		13295	cs[1] = '\0';
271
272			/*
273			* Figure out the byte count for each conversion;
274			* rewrite the format as necessary, set up blank-
275			* padding for end of data.
276			*/
277	✗✗✗✗ ✗✗✓✗ ✗✗✗✗ ✗✓✗	13295	switch(cs[0]) {
278			case 'c':
279			pr->flags = F_CHAR;
280			switch(fu->bcnt) {
281			case 0: case 1:
282			pr->bcnt = 1;
283			break;
284			default:
285			p1[1] = '\0';
286			badcnt(p1);
287			}
288			break;
289			case 'd': case 'i':
290			case 'o': case 'u': case 'x': case 'X':
291	✓✓✗✓	10736	if (cs[0] == 'd' \|\| cs[0] == 'i')
292		500	pr->flags = F_INT;
293			else
294			pr->flags = F_UINT;
295
296		5618	cs[3] = '\0';
297		5618	cs[2] = cs[0];
298		5618	cs[1] = 'l';
299		5618	cs[0] = 'l';
300	✗✓✓✗ ✗✗	5618	switch(fu->bcnt) {
301			case 0: case 4:
302			pr->bcnt = 4;
303		500	break;
304			case 1:
305			pr->bcnt = 1;
306		5118	break;
307			case 2:
308			pr->bcnt = 2;
309			break;
310			case 8:
311			pr->bcnt = 8;
312			break;
313			default:
314			p1[1] = '\0';
315			badcnt(p1);
316			}
317		5618	break;
318			case 'e': case 'E': case 'f': case 'g': case 'G':
319			pr->flags = F_DBL;
320			switch(fu->bcnt) {
321			case 0: case 8:
322			pr->bcnt = 8;
323			break;
324			case 4:
325			pr->bcnt = 4;
326			break;
327			default:
328			p1[1] = '\0';
329			badcnt(p1);
330			}
331			break;
332			case 's':
333			pr->flags = F_STR;
334			switch(sokay) {
335			case NOTOKAY:
336			badsfmt();
337			case USEBCNT:
338			pr->bcnt = fu->bcnt;
339			break;
340			case USEPREC:
341			pr->bcnt = prec;
342			break;
343			}
344			break;
345			case '_':
346		10236	++p2;
347	✓✓✗✗ ✓✗	10236	switch(p1[1]) {
348			case 'A':
349		2559	endfu = fu;
350		2559	fu->flags \|= F_IGNORE;
351			/* FALLTHROUGH */
352			case 'a':
353		5118	pr->flags = F_ADDRESS;
354		5118	++p2;
355	✗✗✓✗	5118	switch(p1[2]) {
356			case 'd': case 'o': case'x':
357		5118	cs[0] = 'l';
358		5118	cs[1] = 'l';
359		5118	cs[2] = p1[2];
360		5118	cs[3] = '\0';
361			break;
362			default:
363			if (p1[2])
364			p1[3] = '\0';
365			badconv(p1);
366			}
367		5118	break;
368			case 'c':
369			case 'p':
370			case 'u':
371	✗✓	2559	if (p1[1] == 'c') {
372			pr->flags = F_C;
373			/* cs[0] = 'c'; set in conv_c */
374	✓✗	2559	} else if (p1[1] == 'p') {
375		2559	pr->flags = F_P;
376		2559	cs[0] = 'c';
377		2559	} else {
378			pr->flags = F_U;
379			/* cs[0] = 'c'; set in conv_u */
380			}
381
382	✓✗	2559	switch(fu->bcnt) {
383			case 0: case 1:
384		2559	pr->bcnt = 1;
385			break;
386			default:
387			p1[2] = '\0';
388			badcnt(p1);
389			}
390		2559	break;
391			default:
392			if (p1[1])
393			p1[2] = '\0';
394			badconv(p1);
395			}
396			break;
397			default:
398			if (cs[0])
399			p1[1] = '\0';
400			badconv(p1);
401			}
402
403			/*
404			* Copy to PR format string, set conversion character
405			* pointer, update original.
406			*/
407		13295	savech = *p2;
408		13295	p1[0] = '\0';
409	✗✓	13295	if (asprintf(&pr->fmt, "%s%s", fmtp, cs) == -1)
410			err(1, NULL);
411		13295	*p2 = savech;
412		13295	pr->cchar = pr->fmt + (p1 - fmtp);
413			fmtp = p2;
414
415			/* Only one conversion character if byte count. */
416	✓✓✓✓ ✗✓	29149	if (!(pr->flags&F_ADDRESS) && fu->bcnt && nconv++)
417			errx(1,
418			"byte count with multiple conversion characters");
419			}
420			/*
421			* If format unit byte count not specified, figure it out
422			* so can adjust rep count later.
423			*/
424	✓✓	20972	if (!fu->bcnt)
425	✓✓	63416	for (pr = fu->nextpr; pr; pr = pr->nextpr)
426		18413	fu->bcnt += pr->bcnt;
427			}
428			/*
429			* If the format string interprets any data at all, and it's
430			* not the same as the blocksize, and its last format unit
431			* interprets any data at all, and has no iteration count,
432			* repeat it as necessary.
433			*
434			* If, rep count is greater than 1, no trailing whitespace
435			* gets output from the last iteration of the format unit.
436			*/
437	✓✓	58298	for (fu = fs->nextfu; fu; fu = fu->nextfu) {
438	✓✓✓✓ ✗✓	31708	if (!fu->nextfu && fs->bcnt < blocksize &&
439	✓✗	5118	!(fu->flags&F_SETREP) && fu->bcnt)
440			fu->reps += (blocksize - fs->bcnt) / fu->bcnt;
441	✓✓	20972	if (fu->reps > 1) {
442	✓✗	7677	if (!fu->nextpr)
443			break;
444		12795	for (pr = fu->nextpr;; pr = pr->nextpr)
445	✓✓	12795	if (!pr->nextpr)
446			break;
447	✓✓	35826	for (p1 = pr->fmt, p2 = NULL; *p1; ++p1)
448		10236	p2 = isspace((unsigned char)*p1) ? p1 : NULL;
449	✓✓	7677	if (p2)
450		5118	pr->nospace = p2;
451			}
452			}
453			#ifdef DEBUG
454			for (fu = fs->nextfu; fu; fu = fu->nextfu) {
455			(void)printf("fmt:");
456			for (pr = fu->nextpr; pr; pr = pr->nextpr)
457			(void)printf(" {%s}", pr->fmt);
458			(void)printf("\n");
459			}
460			#endif
461		8177	}
462
463			static void
464			escape(char *p1)
465			{
466			char *p2;
467
468			/* alphabetic escape sequences have to be done in place */
469		142745	for (p2 = p1;; ++p1, ++p2) {
470	✓✓	121773	if (!*p1) {
471		20972	p2 = p1;
472			break;
473			}
474	✓✓	100801	if (*p1 == '\\') {
475	✗✗✗✗ ✓✗✗✗ ✗	2559	switch(*++p1) {
476			case '\0':
477			*p2++ = '\\';
478			*p2 = '\0';
479			return; /* incomplete escape sequence */
480			case 'a':
481			/* p2 = '\a'; /
482			*p2 = '\007';
483			break;
484			case 'b':
485			*p2 = '\b';
486			break;
487			case 'f':
488			*p2 = '\f';
489			break;
490			case 'n':
491		2559	*p2 = '\n';
492		2559	break;
493			case 'r':
494			*p2 = '\r';
495			break;
496			case 't':
497			*p2 = '\t';
498			break;
499			case 'v':
500			*p2 = '\v';
501			break;
502			default:
503			p2 = p1;
504			break;
505			}
506			} else
507		98242	p2 = p1;
508			}
509		41944	}
510
511			static __dead void
512			badcnt(char *s)
513			{
514			errx(1, "%s: bad byte count", s);
515			}
516
517			static __dead void
518			badsfmt(void)
519			{
520			errx(1, "%%s: requires a precision or a byte count");
521			}
522
523			static __dead void
524			badfmt(const char *fmt)
525			{
526			errx(1, "\"%s\": bad format", fmt);
527			}
528
529			static __dead void
530			badconv(char *ch)
531			{
532			errx(1, "%%%s: bad conversion character", ch);
533			}