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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	libexec/tradcpp/output.c	Lines:	47	79	59.5 %
Date:	2017-11-13	Branches:	36	72	50.0 %


/*-
 * Copyright (c) 2010 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by David A. Holland.
 *
 * 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 <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>

#include "utils.h"
#include "mode.h"
#include "place.h"
#include "output.h"

static int outputfd = -1;
static bool incomment = false;
static char *linebuf;
static size_t linebufpos, linebufmax;
static struct place linebufplace;

static
void
output_open(void)
{
	if ((mode.output_file == NULL) || !strcmp(mode.output_file, "-")) {
		outputfd = STDOUT_FILENO;
	} else {
		outputfd = open(mode.output_file, O_WRONLY|O_CREAT|O_TRUNC,
				0664);
		if (outputfd < 0) {
			complain(NULL, "%s: %s",
				 mode.output_file, strerror(errno));
			die();
		}
	}
}

static
void
dowrite(const char *buf, size_t len)
{
	size_t done;
	ssize_t result;
	static unsigned write_errors = 0;

	if (!mode.do_output) {
		return;
	}

	if (outputfd < 0) {
		output_open();
	}

	done = 0;
	while (done < len) {
		result = write(outputfd, buf+done, len-done);
		if (result == -1) {
			complain(NULL, "%s: write: %s",
				 mode.output_file, strerror(errno));
			complain_failed();
			write_errors++;
			if (write_errors > 5) {
				complain(NULL, "%s: giving up",
					 mode.output_file);
				die();
			}
			/* XXX is this really a good idea? */
			sleep(1);
		}
		done += (size_t)result;
	}
}


static
void
filter_output(const char *buf, size_t len)
{
	size_t pos, start;
	bool inesc = false;
	bool inquote = false;
	char quote = '\0';

	start = 0;
	for (pos = 0; pos < len - 1; pos++) {
		if (!inquote && buf[pos] == '/' && buf[pos+1] == '*') {
			if (!incomment) {
				if (pos > start) {
					dowrite(buf + start, pos - start);
				}
				start = pos;
				pos += 2;
				incomment = true;
				/* cancel out the loop's pos++ */
				pos--;
				continue;
			}
		} else if (buf[pos] == '*' && buf[pos+1] == '/') {
			if (incomment) {
				pos += 2;
				if (mode.output_retain_comments) {
					dowrite(buf + start, pos - start);
				}
				start = pos;
				incomment = false;
				/* cancel out the loop's pos++ */
				pos--;
				continue;
			}
		}

		if (incomment) {
			/* nothing */
		} else if (inesc) {
			inesc = false;
		} else if (buf[pos] == '\\') {
			inesc = true;
		} else if (!inquote && (buf[pos] == '"' || buf[pos] == '\'')) {
			inquote = true;
			quote = buf[pos];
		} else if (inquote && buf[pos] == quote) {
			inquote = false;
		}
	}
	pos++;

	if (pos > start) {
		if (!incomment || mode.output_retain_comments) {
			dowrite(buf + start, pos - start);
		}
	}
}

void
output(const struct place *p, const char *buf, size_t len)
{
	size_t oldmax;

	if (linebufpos + len > linebufmax) {
		oldmax = linebufmax;
		if (linebufmax == 0) {
			linebufmax = 64;
		}
		while (linebufpos + len > linebufmax) {
			linebufmax *= 2;
		}
		linebuf = dorealloc(linebuf, oldmax, linebufmax);
	}
	if (linebufpos == 0) {
		linebufplace = *p;
	}
	memcpy(linebuf + linebufpos, buf, len);
	linebufpos += len;

	if (len == 1 && buf[0] == '\n') {
		filter_output(linebuf, linebufpos);
		linebufpos = 0;
	}
}

void
output_eof(void)
{
	if (mode.output_file != NULL && outputfd >= 0) {
		close(outputfd);
	}
	outputfd = -1;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/*-
2			* Copyright (c) 2010 The NetBSD Foundation, Inc.
3			* All rights reserved.
4			*
5			* This code is derived from software contributed to The NetBSD Foundation
6			* by David A. Holland.
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			*
17			* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18			* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19			* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20			* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21			* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22			* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23			* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24			* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25			* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27			* POSSIBILITY OF SUCH DAMAGE.
28			*/
29
30			#include <string.h>
31			#include <unistd.h>
32			#include <fcntl.h>
33			#include <errno.h>
34
35			#include "utils.h"
36			#include "mode.h"
37			#include "place.h"
38			#include "output.h"
39
40			static int outputfd = -1;
41			static bool incomment = false;
42			static char *linebuf;
43			static size_t linebufpos, linebufmax;
44			static struct place linebufplace;
45
46			static
47			void
48			output_open(void)
49			{
50	✗✓✗✗	2924	if ((mode.output_file == NULL) \|\| !strcmp(mode.output_file, "-")) {
51		1462	outputfd = STDOUT_FILENO;
52		1462	} else {
53			outputfd = open(mode.output_file, O_WRONLY\|O_CREAT\|O_TRUNC,
54			0664);
55			if (outputfd < 0) {
56			complain(NULL, "%s: %s",
57			mode.output_file, strerror(errno));
58			die();
59			}
60			}
61		1462	}
62
63			static
64			void
65			dowrite(const char *buf, size_t len)
66			{
67			size_t done;
68			ssize_t result;
69			static unsigned write_errors = 0;
70
71	✗✓	7780764	if (!mode.do_output) {
72			return;
73			}
74
75	✓✓	3890382	if (outputfd < 0) {
76		1462	output_open();
77		1462	}
78
79			done = 0;
80	✓✓	15561528	while (done < len) {
81		3890382	result = write(outputfd, buf+done, len-done);
82	✗✓	3890382	if (result == -1) {
83			complain(NULL, "%s: write: %s",
84			mode.output_file, strerror(errno));
85			complain_failed();
86			write_errors++;
87			if (write_errors > 5) {
88			complain(NULL, "%s: giving up",
89			mode.output_file);
90			die();
91			}
92			/* XXX is this really a good idea? */
93			sleep(1);
94			}
95		3890382	done += (size_t)result;
96			}
97		7780764	}
98
99
100			static
101			void
102			filter_output(const char *buf, size_t len)
103			{
104			size_t pos, start;
105			bool inesc = false;
106			bool inquote = false;
107			char quote = '\0';
108
109			start = 0;
110	✓✓	272205394	for (pos = 0; pos < len - 1; pos++) {
111	✓✗✓✓ ✗✓	262654148	if (!inquote && buf[pos] == '/' && buf[pos+1] == '*') {
112			if (!incomment) {
113			if (pos > start) {
114			dowrite(buf + start, pos - start);
115			}
116			start = pos;
117			pos += 2;
118			incomment = true;
119			/* cancel out the loop's pos++ */
120			pos--;
121			continue;
122			}
123	✓✓✗✓	130315370	} else if (buf[pos] == '*' && buf[pos+1] == '/') {
124			if (incomment) {
125			pos += 2;
126			if (mode.output_retain_comments) {
127			dowrite(buf + start, pos - start);
128			}
129			start = pos;
130			incomment = false;
131			/* cancel out the loop's pos++ */
132			pos--;
133			continue;
134			}
135			}
136
137	✓✗	130267124	if (incomment) {
138			/* nothing */
139	✗✓	130267124	} else if (inesc) {
140			inesc = false;
141	✗✓	130267124	} else if (buf[pos] == '\\') {
142			inesc = true;
143	✓✗✓✗ ✗✓	390801372	} else if (!inquote && (buf[pos] == '"' \|\| buf[pos] == '\'')) {
144			inquote = true;
145			quote = buf[pos];
146	✗✓✗✗	130267124	} else if (inquote && buf[pos] == quote) {
147			inquote = false;
148			}
149			}
150		3890382	pos++;
151
152	✓✗	3890382	if (pos > start) {
153	✗✓✗✗	3890382	if (!incomment \|\| mode.output_retain_comments) {
154		3890382	dowrite(buf + start, pos - start);
155		3890382	}
156			}
157		3890382	}
158
159			void
160			output(const struct place p, const char buf, size_t len)
161			{
162			size_t oldmax;
163
164	✓✓	116828420	if (linebufpos + len > linebufmax) {
165			oldmax = linebufmax;
166	✓✗	1462	if (linebufmax == 0) {
167		1462	linebufmax = 64;
168		1462	}
169	✗✓	2924	while (linebufpos + len > linebufmax) {
170			linebufmax *= 2;
171			}
172		1462	linebuf = dorealloc(linebuf, oldmax, linebufmax);
173		1462	}
174	✓✓	58414210	if (linebufpos == 0) {
175		3890382	linebufplace = *p;
176		3890382	}
177		58414210	memcpy(linebuf + linebufpos, buf, len);
178		58414210	linebufpos += len;
179
180	✓✓✓✓	95736146	if (len == 1 && buf[0] == '\n') {
181		3890382	filter_output(linebuf, linebufpos);
182		3890382	linebufpos = 0;
183		3890382	}
184		58414210	}
185
186			void
187			output_eof(void)
188			{
189	✗✓	2924	if (mode.output_file != NULL && outputfd >= 0) {
190			close(outputfd);
191			}
192		1462	outputfd = -1;
193		1462	}