blob: 1dc86323b736ccec0ab219b383550bfa389728fe [file] [log] [blame]
Igor Murashkinec79ef22013-10-24 17:09:15 -07001/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "Printer"
18// #define LOG_NDEBUG 0
19
20#include <utils/Printer.h>
21#include <utils/String8.h>
22#include <utils/Log.h>
23
24#include <string.h>
25#include <stdio.h>
26#include <stdlib.h>
27
Igor Murashkinec79ef22013-10-24 17:09:15 -070028namespace android {
29
30/*
31 * Implementation of Printer
32 */
33Printer::Printer() {
34 // Intentionally left empty
35}
36
37Printer::~Printer() {
38 // Intentionally left empty
39}
40
41void Printer::printFormatLine(const char* format, ...) {
42 va_list arglist;
43 va_start(arglist, format);
44
45 char* formattedString;
Igor Murashkine65b7ea2013-10-30 18:09:52 -070046
47#ifndef USE_MINGW
Igor Murashkinec79ef22013-10-24 17:09:15 -070048 if (vasprintf(&formattedString, format, arglist) < 0) { // returns -1 on error
49 ALOGE("%s: Failed to format string", __FUNCTION__);
50 return;
51 }
Igor Murashkine65b7ea2013-10-30 18:09:52 -070052#else
53 return;
54#endif
55
Igor Murashkinec79ef22013-10-24 17:09:15 -070056 va_end(arglist);
57
58 printLine(formattedString);
59 free(formattedString);
60}
61
62/*
63 * Implementation of LogPrinter
64 */
65LogPrinter::LogPrinter(const char* logtag,
66 android_LogPriority priority,
67 const char* prefix,
68 bool ignoreBlankLines) :
69 mLogTag(logtag),
70 mPriority(priority),
71 mPrefix(prefix ?: ""),
72 mIgnoreBlankLines(ignoreBlankLines) {
73}
74
75void LogPrinter::printLine(const char* string) {
76 if (string == NULL) {
77 ALOGW("%s: NULL string passed in", __FUNCTION__);
78 return;
79 }
80
81 if (mIgnoreBlankLines || (*string)) {
82 // Simple case: Line is not blank, or we don't care about printing blank lines
83 printRaw(string);
84 } else {
85 // Force logcat to print empty lines by adding prefixing with a space
86 printRaw(" ");
87 }
88}
89
90void LogPrinter::printRaw(const char* string) {
91 __android_log_print(mPriority, mLogTag, "%s%s", mPrefix, string);
92}
93
94
95/*
96 * Implementation of FdPrinter
97 */
98FdPrinter::FdPrinter(int fd, unsigned int indent, const char* prefix) :
99 mFd(fd), mIndent(indent), mPrefix(prefix ?: "") {
100
101 if (fd < 0) {
102 ALOGW("%s: File descriptor out of range (%d)", __FUNCTION__, fd);
103 }
104
105 // <indent><prefix><line> -- e.g. '%-4s%s\n' for indent=4
106 snprintf(mFormatString, sizeof(mFormatString), "%%-%us%%s\n", mIndent);
107}
108
109void FdPrinter::printLine(const char* string) {
110 if (string == NULL) {
111 ALOGW("%s: NULL string passed in", __FUNCTION__);
112 return;
113 } else if (mFd < 0) {
114 ALOGW("%s: File descriptor out of range (%d)", __FUNCTION__, mFd);
115 return;
116 }
117
Igor Murashkine65b7ea2013-10-30 18:09:52 -0700118#ifndef USE_MINGW
Elliott Hughesdcc98da2014-05-22 01:23:29 -0700119 dprintf(mFd, mFormatString, mPrefix, string);
Igor Murashkine65b7ea2013-10-30 18:09:52 -0700120#endif
Igor Murashkinec79ef22013-10-24 17:09:15 -0700121}
122
123/*
124 * Implementation of String8Printer
125 */
126String8Printer::String8Printer(String8* target, const char* prefix) :
127 mTarget(target),
128 mPrefix(prefix ?: "") {
129
130 if (target == NULL) {
131 ALOGW("%s: Target string was NULL", __FUNCTION__);
132 }
133}
134
135void String8Printer::printLine(const char* string) {
136 if (string == NULL) {
137 ALOGW("%s: NULL string passed in", __FUNCTION__);
138 return;
139 } else if (mTarget == NULL) {
140 ALOGW("%s: Target string was NULL", __FUNCTION__);
141 return;
142 }
143
Christopher Ferris038ac692013-10-31 16:25:04 -0700144 mTarget->append(mPrefix);
Igor Murashkinec79ef22013-10-24 17:09:15 -0700145 mTarget->append(string);
146 mTarget->append("\n");
147}
148
149/*
150 * Implementation of PrefixPrinter
151 */
152PrefixPrinter::PrefixPrinter(Printer& printer, const char* prefix) :
153 mPrinter(printer), mPrefix(prefix ?: "") {
154}
155
156void PrefixPrinter::printLine(const char* string) {
157 mPrinter.printFormatLine("%s%s", mPrefix, string);
158}
159
160}; //namespace android