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-rw-r--r--libs/utils/Debug.cpp318
1 files changed, 318 insertions, 0 deletions
diff --git a/libs/utils/Debug.cpp b/libs/utils/Debug.cpp
new file mode 100644
index 0000000..f7988ec
--- /dev/null
+++ b/libs/utils/Debug.cpp
@@ -0,0 +1,318 @@
+/*
+ * Copyright (C) 2005 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <utils/Debug.h>
+
+#include <utils/misc.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+namespace android {
+
+// ---------------------------------------------------------------------
+
+static const char indentStr[] =
+" "
+" ";
+
+const char* stringForIndent(int32_t indentLevel)
+{
+ ssize_t off = sizeof(indentStr)-1-(indentLevel*2);
+ return indentStr + (off < 0 ? 0 : off);
+}
+
+// ---------------------------------------------------------------------
+
+static void defaultPrintFunc(void* cookie, const char* txt)
+{
+ printf("%s", txt);
+}
+
+// ---------------------------------------------------------------------
+
+static inline int isident(int c)
+{
+ return isalnum(c) || c == '_';
+}
+
+static inline bool isasciitype(char c)
+{
+ if( c >= ' ' && c < 127 && c != '\'' && c != '\\' ) return true;
+ return false;
+}
+
+static inline char makehexdigit(uint32_t val)
+{
+ return "0123456789abcdef"[val&0xF];
+}
+
+static char* appendhexnum(uint32_t val, char* out)
+{
+ for( int32_t i=28; i>=0; i-=4 ) {
+ *out++ = makehexdigit( val>>i );
+ }
+ *out = 0;
+ return out;
+}
+
+static inline char makeupperhexdigit(uint32_t val)
+{
+ return "0123456789ABCDEF"[val&0xF];
+}
+
+static char* appendupperhexnum(uint32_t val, char* out)
+{
+ for( int32_t i=28; i>=0; i-=4 ) {
+ *out++ = makeupperhexdigit( val>>i );
+ }
+ *out = 0;
+ return out;
+}
+
+static char* appendcharornum(char c, char* out, bool skipzero = true)
+{
+ if (skipzero && c == 0) return out;
+
+ if (isasciitype(c)) {
+ *out++ = c;
+ return out;
+ }
+
+ *out++ = '\\';
+ *out++ = 'x';
+ *out++ = makehexdigit(c>>4);
+ *out++ = makehexdigit(c);
+ return out;
+}
+
+static char* typetostring(uint32_t type, char* out,
+ bool fullContext = true,
+ bool strict = false)
+{
+ char* pos = out;
+ char c[4];
+ c[0] = (char)((type>>24)&0xFF);
+ c[1] = (char)((type>>16)&0xFF);
+ c[2] = (char)((type>>8)&0xFF);
+ c[3] = (char)(type&0xFF);
+ bool valid;
+ if( !strict ) {
+ // now even less strict!
+ // valid = isasciitype(c[3]);
+ valid = true;
+ int32_t i = 0;
+ bool zero = true;
+ while (valid && i<3) {
+ if (c[i] == 0) {
+ if (!zero) valid = false;
+ } else {
+ zero = false;
+ //if (!isasciitype(c[i])) valid = false;
+ }
+ i++;
+ }
+ // if all zeros, not a valid type code.
+ if (zero) valid = false;
+ } else {
+ valid = isident(c[3]) ? true : false;
+ int32_t i = 0;
+ bool zero = true;
+ while (valid && i<3) {
+ if (c[i] == 0) {
+ if (!zero) valid = false;
+ } else {
+ zero = false;
+ if (!isident(c[i])) valid = false;
+ }
+ i++;
+ }
+ }
+ if( valid && (!fullContext || c[0] != '0' || c[1] != 'x') ) {
+ if( fullContext ) *pos++ = '\'';
+ pos = appendcharornum(c[0], pos);
+ pos = appendcharornum(c[1], pos);
+ pos = appendcharornum(c[2], pos);
+ pos = appendcharornum(c[3], pos);
+ if( fullContext ) *pos++ = '\'';
+ *pos = 0;
+ return pos;
+ }
+
+ if( fullContext ) {
+ *pos++ = '0';
+ *pos++ = 'x';
+ }
+ return appendhexnum(type, pos);
+}
+
+void printTypeCode(uint32_t typeCode, debugPrintFunc func, void* cookie)
+{
+ char buffer[32];
+ char* end = typetostring(typeCode, buffer);
+ *end = 0;
+ func ? (*func)(cookie, buffer) : defaultPrintFunc(cookie, buffer);
+}
+
+void printHexData(int32_t indent, const void *buf, size_t length,
+ size_t bytesPerLine, int32_t singleLineBytesCutoff,
+ size_t alignment, bool cStyle,
+ debugPrintFunc func, void* cookie)
+{
+ if (alignment == 0) {
+ if (bytesPerLine >= 16) alignment = 4;
+ else if (bytesPerLine >= 8) alignment = 2;
+ else alignment = 1;
+ }
+ if (func == NULL) func = defaultPrintFunc;
+
+ size_t offset;
+
+ unsigned char *pos = (unsigned char *)buf;
+
+ if (pos == NULL) {
+ if (singleLineBytesCutoff < 0) func(cookie, "\n");
+ func(cookie, "(NULL)");
+ return;
+ }
+
+ if (length == 0) {
+ if (singleLineBytesCutoff < 0) func(cookie, "\n");
+ func(cookie, "(empty)");
+ return;
+ }
+
+ if ((int32_t)length < 0) {
+ if (singleLineBytesCutoff < 0) func(cookie, "\n");
+ char buf[64];
+ sprintf(buf, "(bad length: %d)", length);
+ func(cookie, buf);
+ return;
+ }
+
+ char buffer[256];
+ static const size_t maxBytesPerLine = (sizeof(buffer)-1-11-4)/(3+1);
+
+ if (bytesPerLine > maxBytesPerLine) bytesPerLine = maxBytesPerLine;
+
+ const bool oneLine = (int32_t)length <= singleLineBytesCutoff;
+ bool newLine = false;
+ if (cStyle) {
+ indent++;
+ func(cookie, "{\n");
+ newLine = true;
+ } else if (!oneLine) {
+ func(cookie, "\n");
+ newLine = true;
+ }
+
+ for (offset = 0; ; offset += bytesPerLine, pos += bytesPerLine) {
+ long remain = length;
+
+ char* c = buffer;
+ if (!oneLine && !cStyle) {
+ sprintf(c, "0x%08x: ", (int)offset);
+ c += 12;
+ }
+
+ size_t index;
+ size_t word;
+
+ for (word = 0; word < bytesPerLine; ) {
+
+#ifdef HAVE_LITTLE_ENDIAN
+ const size_t startIndex = word+(alignment-(alignment?1:0));
+ const ssize_t dir = -1;
+#else
+ const size_t startIndex = word;
+ const ssize_t dir = 1;
+#endif
+
+ for (index = 0; index < alignment || (alignment == 0 && index < bytesPerLine); index++) {
+
+ if (!cStyle) {
+ if (index == 0 && word > 0 && alignment > 0) {
+ *c++ = ' ';
+ }
+
+ if (remain-- > 0) {
+ const unsigned char val = *(pos+startIndex+(index*dir));
+ *c++ = makehexdigit(val>>4);
+ *c++ = makehexdigit(val);
+ } else if (!oneLine) {
+ *c++ = ' ';
+ *c++ = ' ';
+ }
+ } else {
+ if (remain > 0) {
+ if (index == 0 && word > 0) {
+ *c++ = ',';
+ *c++ = ' ';
+ }
+ if (index == 0) {
+ *c++ = '0';
+ *c++ = 'x';
+ }
+ const unsigned char val = *(pos+startIndex+(index*dir));
+ *c++ = makehexdigit(val>>4);
+ *c++ = makehexdigit(val);
+ remain--;
+ }
+ }
+ }
+
+ word += index;
+ }
+
+ if (!cStyle) {
+ remain = length;
+ *c++ = ' ';
+ *c++ = '\'';
+ for (index = 0; index < bytesPerLine; index++) {
+
+ if (remain-- > 0) {
+ const unsigned char val = pos[index];
+ *c++ = (val >= ' ' && val < 127) ? val : '.';
+ } else if (!oneLine) {
+ *c++ = ' ';
+ }
+ }
+
+ *c++ = '\'';
+ if (length > bytesPerLine) *c++ = '\n';
+ } else {
+ if (remain > 0) *c++ = ',';
+ *c++ = '\n';
+ }
+
+ if (newLine && indent) func(cookie, stringForIndent(indent));
+ *c = 0;
+ func(cookie, buffer);
+ newLine = true;
+
+ if (length <= bytesPerLine) break;
+ length -= bytesPerLine;
+ }
+
+ if (cStyle) {
+ if (indent > 0) func(cookie, stringForIndent(indent-1));
+ func(cookie, "};");
+ }
+}
+
+}; // namespace android
+
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