1/*
2 * Copyright 2014 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#include <errno.h>
18#include <stdlib.h>
19#include <ctype.h>
20
21#define LOG_TAG "ADebug"
22#include <utils/Log.h>
23#include <utils/misc.h>
24
25#include <cutils/properties.h>
26
27#include <ADebug.h>
28#include <AStringUtils.h>
29#include <AUtils.h>
30
31namespace android {
32
33//static
34ADebug::Level ADebug::GetDebugLevelFromString(
35        const char *name, const char *value, ADebug::Level def) {
36    // split on ,
37    const char *next = value, *current;
38    const unsigned long maxLevel = (unsigned long)kDebugMax;
39    while (next != NULL) {
40        current = next;
41        next = strchr(current, ',');
42        if (next != NULL) {
43            ++next;  // pass ,
44        }
45
46        while (isspace(*current)) {
47            ++current;
48        }
49        // check for :
50        char *colon = strchr(current, ':');
51
52        // get level
53        char *end;
54        errno = 0;  // strtoul does not clear errno, but it can be set for any return value
55        unsigned long level = strtoul(current, &end, 10);
56        while (isspace(*end)) {
57            ++end;
58        }
59        if (errno != 0 || end == current || (end != colon && *end != '\0' && end != next)) {
60            // invalid level - skip
61            continue;
62        }
63        if (colon != NULL) {
64            // check if pattern matches
65            do {  // skip colon and spaces
66                ++colon;
67            } while (isspace(*colon));
68            size_t globLen = (next == NULL ? strlen(colon) : (next - 1 - colon));
69            while (globLen > 0 && isspace(colon[globLen - 1])) {
70                --globLen;  // trim glob
71            }
72
73            if (!AStringUtils::MatchesGlob(
74                    colon, globLen, name, strlen(name), true /* ignoreCase */)) {
75                continue;
76            }
77        }
78
79        // update debug level
80        def = (Level)min(level, maxLevel);
81    }
82    return def;
83}
84
85//static
86ADebug::Level ADebug::GetDebugLevelFromProperty(
87        const char *name, const char *propertyName, ADebug::Level def) {
88    char value[PROPERTY_VALUE_MAX];
89    if (property_get(propertyName, value, NULL)) {
90        return GetDebugLevelFromString(name, value, def);
91    }
92    return def;
93}
94
95//static
96char *ADebug::GetDebugName(const char *name) {
97    char *debugName = strdup(name);
98    const char *terms[] = { "omx", "video", "audio" };
99    for (size_t i = 0; i < NELEM(terms) && debugName != NULL; i++) {
100        const char *term = terms[i];
101        const size_t len = strlen(term);
102        char *match = strcasestr(debugName, term);
103        if (match != NULL && (match == debugName || match[-1] == '.'
104                || match[len] == '.' || match[len] == '\0')) {
105            char *src = match + len;
106            if (match == debugName || match[-1] == '.') {
107                src += (*src == '.');  // remove trailing or double .
108            }
109            memmove(match, src, debugName + strlen(debugName) - src + 1);
110        }
111    }
112
113    return debugName;
114}
115
116}  // namespace android
117
118