Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/sed/main.c	Lines:	206	245	84.1 %
Date:	2017-11-07	Branches:	126	183	68.9 %


/*	$OpenBSD: main.c,v 1.35 2017/08/01 18:05:53 martijn Exp $	*/

/*-
 * Copyright (c) 1992 Diomidis Spinellis.
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Diomidis Spinellis of Imperial College, University of London.
 *
 * 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/ioctl.h>
#include <sys/stat.h>

#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <regex.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libgen.h>

#include "defs.h"
#include "extern.h"

/*
 * Linked list of units (strings and files) to be compiled
 */
struct s_compunit {
	struct s_compunit *next;
	enum e_cut {CU_FILE, CU_STRING} type;
	char *s;			/* Pointer to string or fname */
};

/*
 * Linked list pointer to compilation units and pointer to current
 * next pointer.
 */
static struct s_compunit *script, **cu_nextp = &script;

/*
 * Linked list of files to be processed
 */
struct s_flist {
	char *fname;
	struct s_flist *next;
};

/*
 * Linked list pointer to files and pointer to current
 * next pointer.
 */
static struct s_flist *files, **fl_nextp = &files;

FILE *infile;			/* Current input file */
FILE *outfile;			/* Current output file */

int Eflag, aflag, eflag, nflag;
static int rval;	/* Exit status */

/*
 * Current file and line number; line numbers restart across compilation
 * units, but span across input files.  The latter is optional if editing
 * in place.
 */
const char *fname;		/* File name. */
const char *outfname;		/* Output file name */
static char oldfname[PATH_MAX];	/* Old file name (for in-place editing) */
static char tmpfname[PATH_MAX];	/* Temporary file name (for in-place editing) */
char *inplace;			/* Inplace edit file extension */
u_long linenum;

static void add_compunit(enum e_cut, char *);
static void add_file(char *);
static int next_files_have_lines(void);

int termwidth;

int pledge_wpath, pledge_rpath;

int
main(int argc, char *argv[])
{
	struct winsize win;
	int c, fflag;
	char *p;

	fflag = 0;
	inplace = NULL;
	while ((c = getopt(argc, argv, "Eae:f:i::nru")) != -1)
		switch (c) {
		case 'E':
		case 'r':
			Eflag = 1;
			break;
		case 'a':
			aflag = 1;
			break;
		case 'e':
			eflag = 1;
			add_compunit(CU_STRING, optarg);
			break;
		case 'f':
			fflag = 1;
			add_compunit(CU_FILE, optarg);
			break;
		case 'i':
			inplace = optarg ? optarg : "";
			break;
		case 'n':
			nflag = 1;
			break;
		case 'u':
			setvbuf(stdout, NULL, _IOLBF, 0);
			break;
		default:
		case '?':
			(void)fprintf(stderr,
			    "usage: sed [-aEnru] [-i[extension]] command [file ...]\n"
			    "       sed [-aEnru] [-e command] [-f command_file] [-i[extension]] [file ...]\n");
			exit(1);
		}
	argc -= optind;
	argv += optind;

	termwidth = 0;
	if ((p = getenv("COLUMNS")) != NULL)
		termwidth = strtonum(p, 0, INT_MAX, NULL);
	if (termwidth == 0 && ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) == 0 &&
	    win.ws_col > 0)
		termwidth = win.ws_col;
	if (termwidth == 0)
		termwidth = 80;

	if (inplace != NULL) {
		if (pledge("stdio rpath wpath cpath fattr chown flock", NULL) == -1)
			error(FATAL, "pledge: %s", strerror(errno));
	} else {
		if (pledge("stdio rpath wpath cpath flock", NULL) == -1)
			error(FATAL, "pledge: %s", strerror(errno));
	}

	/* First usage case; script is the first arg */
	if (!eflag && !fflag && *argv) {
		add_compunit(CU_STRING, *argv);
		argv++;
	}

	compile();

	/* Continue with first and start second usage */
	if (*argv) {
		if (!pledge_wpath && inplace == NULL) {
			if (pledge("stdio rpath flock cpath wpath", NULL) == -1)
				error(FATAL, "pledge: %s", strerror(errno));
		}
		for (; *argv; argv++)
			add_file(*argv);
	} else {
		if (!pledge_wpath && !pledge_rpath) {
			if (pledge("stdio flock rpath cpath wpath", NULL) == -1)
				error(FATAL, "pledge: %s", strerror(errno));
		} else if (pledge_rpath) {
			if (pledge("stdio rpath flock cpath wpath", NULL) == -1)
				error(FATAL, "pledge: %s", strerror(errno));
		} else if (pledge_wpath) {
			if (pledge("stdio wpath cpath flock rpath", NULL) == -1)
				error(FATAL, "pledge: %s", strerror(errno));
		}
		add_file(NULL);
	}
	process();
	cfclose(prog, NULL);
	if (fclose(stdout))
		error(FATAL, "stdout: %s", strerror(errno));
	exit (rval);
}

/*
 * Like fgets, but go through the chain of compilation units chaining them
 * together.  Empty strings and files are ignored.
 */
char *
cu_fgets(char **outbuf, size_t *outsize)
{
	static enum {ST_EOF, ST_FILE, ST_STRING} state = ST_EOF;
	static FILE *f;		/* Current open file */
	static char *s;		/* Current pointer inside string */
	static char string_ident[30];
	size_t len;
	char *p;

	if (*outbuf == NULL)
		*outsize = 0;

again:
	switch (state) {
	case ST_EOF:
		if (script == NULL)
			return (NULL);
		linenum = 0;
		switch (script->type) {
		case CU_FILE:
			if ((f = fopen(script->s, "r")) == NULL)
				error(FATAL,
				    "%s: %s", script->s, strerror(errno));
			fname = script->s;
			state = ST_FILE;
			goto again;
		case CU_STRING:
			if ((snprintf(string_ident,
			    sizeof(string_ident), "\"%s\"", script->s)) >=
			    sizeof(string_ident))
				strlcpy(string_ident +
				    sizeof(string_ident) - 6, " ...\"", 5);
			fname = string_ident;
			s = script->s;
			state = ST_STRING;
			goto again;
		}
	case ST_FILE:
		if ((p = fgetln(f, &len)) != NULL) {
			linenum++;
			if (len >= *outsize) {
				free(*outbuf);
				*outsize = ROUNDLEN(len + 1);
				*outbuf = xmalloc(*outsize);
			}
			memcpy(*outbuf, p, len);
			(*outbuf)[len] = '\0';
			if (linenum == 1 && p[0] == '#' && p[1] == 'n')
				nflag = 1;
			return (*outbuf);
		}
		script = script->next;
		(void)fclose(f);
		state = ST_EOF;
		goto again;
	case ST_STRING:
		if (linenum == 0 && s[0] == '#' && s[1] == 'n')
			nflag = 1;
		p = *outbuf;
		len = *outsize;
		for (;;) {
			if (len <= 1) {
				*outbuf = xrealloc(*outbuf,
				    *outsize + _POSIX2_LINE_MAX);
				p = *outbuf + *outsize - len;
				len += _POSIX2_LINE_MAX;
				*outsize += _POSIX2_LINE_MAX;
			}
			switch (*s) {
			case '\0':
				state = ST_EOF;
				if (s == script->s) {
					script = script->next;
					goto again;
				} else {
					script = script->next;
					*p = '\0';
					linenum++;
					return (*outbuf);
				}
			case '\n':
				*p++ = '\n';
				*p = '\0';
				s++;
				linenum++;
				return (*outbuf);
			default:
				*p++ = *s++;
				len--;
			}
		}
	}

	return (NULL);
}

/*
 * Like fgets, but go through the list of files chaining them together.
 * Set len to the length of the line.
 */
int
mf_fgets(SPACE *sp, enum e_spflag spflag)
{
	struct stat sb;
	size_t len;
	char *p;
	int c, fd;
	static int firstfile;

	if (infile == NULL) {
		/* stdin? */
		if (files->fname == NULL) {
			if (inplace != NULL)
				error(FATAL, "-i may not be used with stdin");
			infile = stdin;
			fname = "stdin";
			outfile = stdout;
			outfname = "stdout";
		}

		firstfile = 1;
	}

	for (;;) {
		if (infile != NULL && (c = getc(infile)) != EOF) {
			(void)ungetc(c, infile);
			break;
		}
		/* If we are here then either eof or no files are open yet */
		if (infile == stdin) {
			sp->len = 0;
			return (0);
		}
		if (infile != NULL) {
			fclose(infile);
			if (*oldfname != '\0') {
				if (rename(fname, oldfname) != 0) {
					warning("rename()");
					unlink(tmpfname);
					exit(1);
				}
				*oldfname = '\0';
			}
			if (*tmpfname != '\0') {
				if (outfile != NULL && outfile != stdout)
					fclose(outfile);
				outfile = NULL;
				rename(tmpfname, fname);
				*tmpfname = '\0';
			}
			outfname = NULL;
		}
		if (firstfile == 0)
			files = files->next;
		else
			firstfile = 0;
		if (files == NULL) {
			sp->len = 0;
			return (0);
		}
		fname = files->fname;
		if (inplace != NULL) {
			if (lstat(fname, &sb) != 0)
				error(FATAL, "%s: %s", fname,
				    strerror(errno ? errno : EIO));
			if (!S_ISREG(sb.st_mode))
				error(FATAL, "%s: %s %s", fname,
				    "in-place editing only",
				    "works for regular files");
			if (*inplace != '\0') {
				strlcpy(oldfname, fname,
				    sizeof(oldfname));
				len = strlcat(oldfname, inplace,
				    sizeof(oldfname));
				if (len > sizeof(oldfname))
					error(FATAL, "%s: name too long", fname);
			}
			len = snprintf(tmpfname, sizeof(tmpfname), "%s/sedXXXXXXXXXX",
			    dirname(fname));
			if (len >= sizeof(tmpfname))
				error(FATAL, "%s: name too long", fname);
			if ((fd = mkstemp(tmpfname)) == -1)
				error(FATAL, "%s: %s", fname, strerror(errno));
			if ((outfile = fdopen(fd, "w")) == NULL) {
				unlink(tmpfname);
				error(FATAL, "%s", fname);
			}
			fchown(fileno(outfile), sb.st_uid, sb.st_gid);
			fchmod(fileno(outfile), sb.st_mode & ALLPERMS);
			outfname = tmpfname;
			linenum = 0;
			resetranges();
		} else {
			outfile = stdout;
			outfname = "stdout";
		}
		if ((infile = fopen(fname, "r")) == NULL) {
			warning("%s", strerror(errno));
			rval = 1;
			continue;
		}
	}

	/*
	 * We are here only when infile is open and we still have something
	 * to read from it.
	 *
	 * Use fgetln so that we can handle essentially infinite input data.
	 * Can't use the pointer into the stdio buffer as the process space
	 * because the ungetc() can cause it to move.
	 */
	p = fgetln(infile, &len);
	if (ferror(infile))
		error(FATAL, "%s: %s", fname, strerror(errno ? errno : EIO));
	if (len != 0 && p[len - 1] == '\n') {
		sp->append_newline = 1;
		len--;
	} else if (!lastline()) {
		sp->append_newline = 1;
	} else {
		sp->append_newline = 0;
	}
	cspace(sp, p, len, spflag);

	linenum++;

	return (1);
}

/*
 * Add a compilation unit to the linked list
 */
static void
add_compunit(enum e_cut type, char *s)
{
	struct s_compunit *cu;

	cu = xmalloc(sizeof(struct s_compunit));
	cu->type = type;
	cu->s = s;
	cu->next = NULL;
	*cu_nextp = cu;
	cu_nextp = &cu->next;
}

/*
 * Add a file to the linked list
 */
static void
add_file(char *s)
{
	struct s_flist *fp;

	fp = xmalloc(sizeof(struct s_flist));
	fp->next = NULL;
	*fl_nextp = fp;
	fp->fname = s;
	fl_nextp = &fp->next;
}


static int
next_files_have_lines()
{
	struct s_flist *file;
	FILE *file_fd;
	int ch;

	file = files;
	while ((file = file->next) != NULL) {
		if ((file_fd = fopen(file->fname, "r")) == NULL)
			continue;

		if ((ch = getc(file_fd)) != EOF) {
			/*
			 * This next file has content, therefore current
			 * file doesn't contains the last line.
			 */
			ungetc(ch, file_fd);
			fclose(file_fd);
			return (1);
		}
		fclose(file_fd);
	}
	return (0);
}

int
lastline(void)
{
	int ch;

	if (feof(infile)) {
		return !(
		    (inplace == NULL) &&
		    next_files_have_lines());
	}
	if ((ch = getc(infile)) == EOF) {
		return !(
		    (inplace == NULL) &&
		    next_files_have_lines());
	}
	ungetc(ch, infile);
	return (0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: main.c,v 1.35 2017/08/01 18:05:53 martijn Exp $ */
2
3			/*-
4			* Copyright (c) 1992 Diomidis Spinellis.
5			* Copyright (c) 1992, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* This code is derived from software contributed to Berkeley by
9			* Diomidis Spinellis of Imperial College, University of London.
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			* 3. Neither the name of the University nor the names of its contributors
20			* may be used to endorse or promote products derived from this software
21			* without specific prior written permission.
22			*
23			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33			* SUCH DAMAGE.
34			*/
35
36			#include <sys/types.h>
37			#include <sys/ioctl.h>
38			#include <sys/stat.h>
39
40			#include <ctype.h>
41			#include <errno.h>
42			#include <fcntl.h>
43			#include <limits.h>
44			#include <regex.h>
45			#include <stddef.h>
46			#include <stdio.h>
47			#include <stdlib.h>
48			#include <string.h>
49			#include <unistd.h>
50			#include <libgen.h>
51
52			#include "defs.h"
53			#include "extern.h"
54
55			/*
56			* Linked list of units (strings and files) to be compiled
57			*/
58			struct s_compunit {
59			struct s_compunit *next;
60			enum e_cut {CU_FILE, CU_STRING} type;
61			char s; / Pointer to string or fname */
62			};
63
64			/*
65			* Linked list pointer to compilation units and pointer to current
66			* next pointer.
67			*/
68			static struct s_compunit script, *cu_nextp = &script;
69
70			/*
71			* Linked list of files to be processed
72			*/
73			struct s_flist {
74			char *fname;
75			struct s_flist *next;
76			};
77
78			/*
79			* Linked list pointer to files and pointer to current
80			* next pointer.
81			*/
82			static struct s_flist files, *fl_nextp = &files;
83
84			FILE infile; / Current input file */
85			FILE outfile; / Current output file */
86
87			int Eflag, aflag, eflag, nflag;
88			static int rval; /* Exit status */
89
90			/*
91			* Current file and line number; line numbers restart across compilation
92			* units, but span across input files. The latter is optional if editing
93			* in place.
94			*/
95			const char fname; / File name. */
96			const char outfname; / Output file name */
97			static char oldfname[PATH_MAX]; /* Old file name (for in-place editing) */
98			static char tmpfname[PATH_MAX]; /* Temporary file name (for in-place editing) */
99			char inplace; / Inplace edit file extension */
100			u_long linenum;
101
102			static void add_compunit(enum e_cut, char *);
103			static void add_file(char *);
104			static int next_files_have_lines(void);
105
106			int termwidth;
107
108			int pledge_wpath, pledge_rpath;
109
110			int
111			main(int argc, char *argv[])
112			{
113		19030	struct winsize win;
114			int c, fflag;
115			char *p;
116
117			fflag = 0;
118		9515	inplace = NULL;
119	✓✓	25690	while ((c = getopt(argc, argv, "Eae:f:i::nru")) != -1)
120	✗✓✗✓ ✓✓✓✗ ✓	6681	switch (c) {
121			case 'E':
122			case 'r':
123		4301	Eflag = 1;
124		4301	break;
125			case 'a':
126			aflag = 1;
127			break;
128			case 'e':
129		1584	eflag = 1;
130		1584	add_compunit(CU_STRING, optarg);
131		1584	break;
132			case 'f':
133			fflag = 1;
134		249	add_compunit(CU_FILE, optarg);
135		249	break;
136			case 'i':
137		21	inplace = optarg ? optarg : "";
138		21	break;
139			case 'n':
140		505	nflag = 1;
141		505	break;
142			case 'u':
143			setvbuf(stdout, NULL, _IOLBF, 0);
144			break;
145			default:
146			case '?':
147			(void)fprintf(stderr,
148			"usage: sed [-aEnru] [-i[extension]] command [file ...]\n"
149			" sed [-aEnru] [-e command] [-f command_file] [-i[extension]] [file ...]\n");
150			exit(1);
151			}
152		9494	argc -= optind;
153		9494	argv += optind;
154
155		9494	termwidth = 0;
156	✗✓	9494	if ((p = getenv("COLUMNS")) != NULL)
157			termwidth = strtonum(p, 0, INT_MAX, NULL);
158	✓✗✓✓ ✓✗	19010	if (termwidth == 0 && ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) == 0 &&
159		22	win.ws_col > 0)
160		22	termwidth = win.ws_col;
161	✓✓	9494	if (termwidth == 0)
162		9472	termwidth = 80;
163
164	✓✓	9494	if (inplace != NULL) {
165	✗✓	21	if (pledge("stdio rpath wpath cpath fattr chown flock", NULL) == -1)
166			error(FATAL, "pledge: %s", strerror(errno));
167			} else {
168	✗✓	9473	if (pledge("stdio rpath wpath cpath flock", NULL) == -1)
169			error(FATAL, "pledge: %s", strerror(errno));
170			}
171
172			/* First usage case; script is the first arg */
173	✓✓✓✗	17359	if (!eflag && !fflag && *argv) {
174		7865	add_compunit(CU_STRING, *argv);
175		7865	argv++;
176		7865	}
177
178		9312	compile();
179
180			/* Continue with first and start second usage */
181	✓✓	9312	if (*argv) {
182	✓✓	1080	if (!pledge_wpath && inplace == NULL) {
183	✗✓	1059	if (pledge("stdio rpath flock cpath wpath", NULL) == -1)
184			error(FATAL, "pledge: %s", strerror(errno));
185			}
186	✓✓	3510	for (; *argv; argv++)
187		1215	add_file(*argv);
188			} else {
189	✓✓	8232	if (!pledge_wpath && !pledge_rpath) {
190	✗✓	8187	if (pledge("stdio flock rpath cpath wpath", NULL) == -1)
191			error(FATAL, "pledge: %s", strerror(errno));
192	✓✗	45	} else if (pledge_rpath) {
193	✗✓	45	if (pledge("stdio rpath flock cpath wpath", NULL) == -1)
194			error(FATAL, "pledge: %s", strerror(errno));
195			} else if (pledge_wpath) {
196			if (pledge("stdio wpath cpath flock rpath", NULL) == -1)
197			error(FATAL, "pledge: %s", strerror(errno));
198			}
199		8232	add_file(NULL);
200			}
201		9087	process();
202		9087	cfclose(prog, NULL);
203	✗✓	9087	if (fclose(stdout))
204			error(FATAL, "stdout: %s", strerror(errno));
205			exit (rval);
206			}
207
208			/*
209			* Like fgets, but go through the chain of compilation units chaining them
210			* together. Empty strings and files are ignored.
211			*/
212			char *
213			cu_fgets(char *outbuf, size_t outsize)
214			{
215			static enum {ST_EOF, ST_FILE, ST_STRING} state = ST_EOF;
216			static FILE f; / Current open file */
217			static char s; / Current pointer inside string */
218			static char string_ident[30];
219		81392	size_t len;
220			char *p;
221
222	✓✓	40696	if (*outbuf == NULL)
223		9659	*outsize = 0;
224
225			again:
226	✓✓✓✗	50629	switch (state) {
227			case ST_EOF:
228	✓✓	19045	if (script == NULL)
229		9347	return (NULL);
230		9698	linenum = 0;
231	✓✓✗	9698	switch (script->type) {
232			case CU_FILE:
233	✓✓	249	if ((f = fopen(script->s, "r")) == NULL)
234			error(FATAL,
235			"%s: %s", script->s, strerror(errno));
236		242	fname = script->s;
237		242	state = ST_FILE;
238		242	goto again;
239			case CU_STRING:
240	✓✓	18898	if ((snprintf(string_ident,
241		18898	sizeof(string_ident), "\"%s\"", script->s)) >=
242			sizeof(string_ident))
243		3707	strlcpy(string_ident +
244			sizeof(string_ident) - 6, " ...\"", 5);
245		9449	fname = string_ident;
246		9449	s = script->s;
247		9449	state = ST_STRING;
248		9449	goto again;
249			}
250			case ST_FILE:
251	✓✓	17806	if ((p = fgetln(f, &len)) != NULL) {
252		17571	linenum++;
253	✓✓	17571	if (len >= *outsize) {
254		298	free(*outbuf);
255		298	*outsize = ROUNDLEN(len + 1);
256		298	outbuf = xmalloc(outsize);
257		298	}
258		17571	memcpy(*outbuf, p, len);
259		17571	(*outbuf)[len] = '\0';
260	✓✓✓✓ ✓✓	17848	if (linenum == 1 && p[0] == '#' && p[1] == 'n')
261		7	nflag = 1;
262		17571	return (*outbuf);
263			}
264		235	script = script->next;
265		235	(void)fclose(f);
266		235	state = ST_EOF;
267		235	goto again;
268			case ST_STRING:
269	✓✓✗✓ ✗✗	23227	if (linenum == 0 && s[0] == '#' && s[1] == 'n')
270			nflag = 1;
271		13778	p = *outbuf;
272		13778	len = *outsize;
273		250243	for (;;) {
274	✓✓	250243	if (len <= 1) {
275		18680	outbuf = xrealloc(outbuf,
276		9340	*outsize + _POSIX2_LINE_MAX);
277		9340	p = outbuf + outsize - len;
278		9340	len += _POSIX2_LINE_MAX;
279		9340	*outsize += _POSIX2_LINE_MAX;
280		9340	}
281	✓✓✓	250243	switch (*s) {
282			case '\0':
283		9449	state = ST_EOF;
284	✓✓	9449	if (s == script->s) {
285			script = script->next;
286			goto again;
287			} else {
288			script = script->next;
289		9442	*p = '\0';
290		9442	linenum++;
291		9442	return (*outbuf);
292			}
293			case '\n':
294		4329	*p++ = '\n';
295		4329	*p = '\0';
296		4329	s++;
297		4329	linenum++;
298		4329	return (*outbuf);
299			default:
300		236465	p++ = s++;
301		236465	len--;
302			}
303			}
304			}
305
306			return (NULL);
307		40689	}
308
309			/*
310			* Like fgets, but go through the list of files chaining them together.
311			* Set len to the length of the line.
312			*/
313			int
314			mf_fgets(SPACE *sp, enum e_spflag spflag)
315			{
316		1876072	struct stat sb;
317		938036	size_t len;
318			char *p;
319			int c, fd;
320			static int firstfile;
321
322	✓✓	938036	if (infile == NULL) {
323			/* stdin? */
324	✓✓	9312	if (files->fname == NULL) {
325	✗✓	8232	if (inplace != NULL)
326			error(FATAL, "-i may not be used with stdin");
327		8232	infile = stdin;
328		8232	fname = "stdin";
329		8232	outfile = stdout;
330		8232	outfname = "stdout";
331		8232	}
332
333		9312	firstfile = 1;
334		9312	}
335
336			for (;;) {
337	✓✓✓✗ ✓✓✓✓	4691907	if (infile != NULL && (c = getc(infile)) != EOF) {
338		928942	(void)ungetc(c, infile);
339			break;
340			}
341			/* If we are here then either eof or no files are open yet */
342	✓✓	10309	if (infile == stdin) {
343		8212	sp->len = 0;
344		8212	return (0);
345			}
346	✓✓	2097	if (infile != NULL) {
347		1010	fclose(infile);
348	✗✓	1010	if (*oldfname != '\0') {
349			if (rename(fname, oldfname) != 0) {
350			warning("rename()");
351			unlink(tmpfname);
352			exit(1);
353			}
354			*oldfname = '\0';
355			}
356	✓✓	1010	if (*tmpfname != '\0') {
357	✓✗	21	if (outfile != NULL && outfile != stdout)
358		21	fclose(outfile);
359		21	outfile = NULL;
360		21	rename(tmpfname, fname);
361		21	*tmpfname = '\0';
362		21	}
363		1010	outfname = NULL;
364		1010	}
365	✓✓	2097	if (firstfile == 0)
366		1017	files = files->next;
367			else
368		1080	firstfile = 0;
369	✓✓	2097	if (files == NULL) {
370		882	sp->len = 0;
371		882	return (0);
372			}
373		1215	fname = files->fname;
374	✓✓	1215	if (inplace != NULL) {
375	✗✓	21	if (lstat(fname, &sb) != 0)
376			error(FATAL, "%s: %s", fname,
377			strerror(errno ? errno : EIO));
378	✗✓	21	if (!S_ISREG(sb.st_mode))
379			error(FATAL, "%s: %s %s", fname,
380			"in-place editing only",
381			"works for regular files");
382	✗✓	21	if (*inplace != '\0') {
383			strlcpy(oldfname, fname,
384			sizeof(oldfname));
385			len = strlcat(oldfname, inplace,
386			sizeof(oldfname));
387			if (len > sizeof(oldfname))
388			error(FATAL, "%s: name too long", fname);
389			}
390		21	len = snprintf(tmpfname, sizeof(tmpfname), "%s/sedXXXXXXXXXX",
391		21	dirname(fname));
392	✗✓	21	if (len >= sizeof(tmpfname))
393			error(FATAL, "%s: name too long", fname);
394	✗✓	21	if ((fd = mkstemp(tmpfname)) == -1)
395			error(FATAL, "%s: %s", fname, strerror(errno));
396	✗✓	21	if ((outfile = fdopen(fd, "w")) == NULL) {
397			unlink(tmpfname);
398			error(FATAL, "%s", fname);
399			}
400	✓✗	63	fchown(fileno(outfile), sb.st_uid, sb.st_gid);
401	✓✗	63	fchmod(fileno(outfile), sb.st_mode & ALLPERMS);
402		21	outfname = tmpfname;
403		21	linenum = 0;
404		21	resetranges();
405		21	} else {
406		1194	outfile = stdout;
407		1194	outfname = "stdout";
408			}
409	✓✓	1215	if ((infile = fopen(fname, "r")) == NULL) {
410		7	warning("%s", strerror(errno));
411		7	rval = 1;
412		7	continue;
413			}
414			}
415
416			/*
417			* We are here only when infile is open and we still have something
418			* to read from it.
419			*
420			* Use fgetln so that we can handle essentially infinite input data.
421			* Can't use the pointer into the stdio buffer as the process space
422			* because the ungetc() can cause it to move.
423			*/
424		928942	p = fgetln(infile, &len);
425	✓✗✗✓ ✗✗	1857884	if (ferror(infile))
426			error(FATAL, "%s: %s", fname, strerror(errno ? errno : EIO));
427	✓✗✓✓	1857884	if (len != 0 && p[len - 1] == '\n') {
428		927912	sp->append_newline = 1;
429		927912	len--;
430		928942	} else if (!lastline()) {
431			sp->append_newline = 1;
432			} else {
433			sp->append_newline = 0;
434			}
435		928942	cspace(sp, p, len, spflag);
436
437		928942	linenum++;
438
439		928942	return (1);
440		938036	}
441
442			/*
443			* Add a compilation unit to the linked list
444			*/
445			static void
446			add_compunit(enum e_cut type, char *s)
447			{
448			struct s_compunit *cu;
449
450		19396	cu = xmalloc(sizeof(struct s_compunit));
451		9698	cu->type = type;
452		9698	cu->s = s;
453		9698	cu->next = NULL;
454		9698	*cu_nextp = cu;
455		9698	cu_nextp = &cu->next;
456		9698	}
457
458			/*
459			* Add a file to the linked list
460			*/
461			static void
462			add_file(char *s)
463			{
464			struct s_flist *fp;
465
466		18894	fp = xmalloc(sizeof(struct s_flist));
467		9447	fp->next = NULL;
468		9447	*fl_nextp = fp;
469		9447	fp->fname = s;
470		9447	fl_nextp = &fp->next;
471		9447	}
472
473
474			static int
475			next_files_have_lines()
476			{
477			struct s_flist *file;
478			FILE *file_fd;
479			int ch;
480
481		2290	file = files;
482	✓✓	2318	while ((file = file->next) != NULL) {
483	✗✓	42	if ((file_fd = fopen(file->fname, "r")) == NULL)
484			continue;
485
486	✓✗✓✗ ✓✓	168	if ((ch = getc(file_fd)) != EOF) {
487			/*
488			* This next file has content, therefore current
489			* file doesn't contains the last line.
490			*/
491		28	ungetc(ch, file_fd);
492		28	fclose(file_fd);
493		28	return (1);
494			}
495		14	fclose(file_fd);
496			}
497		1117	return (0);
498		1145	}
499
500			int
501			lastline(void)
502			{
503			int ch;
504
505	✓✗✓✓ ✗✗	6162	if (feof(infile)) {
506		1030	return !(
507	✓✗	2060	(inplace == NULL) &&
508		1030	next_files_have_lines());
509			}
510	✓✗✓✓ ✓✓	4096	if ((ch = getc(infile)) == EOF) {
511		115	return !(
512	✓✗	230	(inplace == NULL) &&
513		115	next_files_have_lines());
514			}
515		909	ungetc(ch, infile);
516		909	return (0);
517		2054	}