Adds a modified copy of talk/base to webrtc/base. It is the first step in
migrating talk/base to webrtc/base.
BUG=N/A
R=niklas.enbom@webrtc.org
Review URL: https://webrtc-codereview.appspot.com/17479005
git-svn-id: http://webrtc.googlecode.com/svn/trunk@6129 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/base/stringencode.cc b/webrtc/base/stringencode.cc
new file mode 100644
index 0000000..1e0a149
--- /dev/null
+++ b/webrtc/base/stringencode.cc
@@ -0,0 +1,657 @@
+/*
+ * Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/base/stringencode.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "webrtc/base/basictypes.h"
+#include "webrtc/base/common.h"
+#include "webrtc/base/stringutils.h"
+
+namespace rtc {
+
+/////////////////////////////////////////////////////////////////////////////
+// String Encoding Utilities
+/////////////////////////////////////////////////////////////////////////////
+
+size_t escape(char * buffer, size_t buflen,
+ const char * source, size_t srclen,
+ const char * illegal, char escape) {
+ ASSERT(NULL != buffer); // TODO: estimate output size
+ if (buflen <= 0)
+ return 0;
+
+ size_t srcpos = 0, bufpos = 0;
+ while ((srcpos < srclen) && (bufpos + 1 < buflen)) {
+ char ch = source[srcpos++];
+ if ((ch == escape) || ::strchr(illegal, ch)) {
+ if (bufpos + 2 >= buflen)
+ break;
+ buffer[bufpos++] = escape;
+ }
+ buffer[bufpos++] = ch;
+ }
+
+ buffer[bufpos] = '\0';
+ return bufpos;
+}
+
+size_t unescape(char * buffer, size_t buflen,
+ const char * source, size_t srclen,
+ char escape) {
+ ASSERT(NULL != buffer); // TODO: estimate output size
+ if (buflen <= 0)
+ return 0;
+
+ size_t srcpos = 0, bufpos = 0;
+ while ((srcpos < srclen) && (bufpos + 1 < buflen)) {
+ char ch = source[srcpos++];
+ if ((ch == escape) && (srcpos < srclen)) {
+ ch = source[srcpos++];
+ }
+ buffer[bufpos++] = ch;
+ }
+ buffer[bufpos] = '\0';
+ return bufpos;
+}
+
+size_t encode(char * buffer, size_t buflen,
+ const char * source, size_t srclen,
+ const char * illegal, char escape) {
+ ASSERT(NULL != buffer); // TODO: estimate output size
+ if (buflen <= 0)
+ return 0;
+
+ size_t srcpos = 0, bufpos = 0;
+ while ((srcpos < srclen) && (bufpos + 1 < buflen)) {
+ char ch = source[srcpos++];
+ if ((ch != escape) && !::strchr(illegal, ch)) {
+ buffer[bufpos++] = ch;
+ } else if (bufpos + 3 >= buflen) {
+ break;
+ } else {
+ buffer[bufpos+0] = escape;
+ buffer[bufpos+1] = hex_encode((static_cast<unsigned char>(ch) >> 4) & 0xF);
+ buffer[bufpos+2] = hex_encode((static_cast<unsigned char>(ch) ) & 0xF);
+ bufpos += 3;
+ }
+ }
+ buffer[bufpos] = '\0';
+ return bufpos;
+}
+
+size_t decode(char * buffer, size_t buflen,
+ const char * source, size_t srclen,
+ char escape) {
+ if (buflen <= 0)
+ return 0;
+
+ unsigned char h1, h2;
+ size_t srcpos = 0, bufpos = 0;
+ while ((srcpos < srclen) && (bufpos + 1 < buflen)) {
+ char ch = source[srcpos++];
+ if ((ch == escape)
+ && (srcpos + 1 < srclen)
+ && hex_decode(source[srcpos], &h1)
+ && hex_decode(source[srcpos+1], &h2)) {
+ buffer[bufpos++] = (h1 << 4) | h2;
+ srcpos += 2;
+ } else {
+ buffer[bufpos++] = ch;
+ }
+ }
+ buffer[bufpos] = '\0';
+ return bufpos;
+}
+
+const char* unsafe_filename_characters() {
+ // It might be better to have a single specification which is the union of
+ // all operating systems, unless one system is overly restrictive.
+#if defined(WEBRTC_WIN)
+ return "\\/:*?\"<>|";
+#else // !WEBRTC_WIN
+ // TODO
+ ASSERT(false);
+ return "";
+#endif // !WEBRTC_WIN
+}
+
+const unsigned char URL_UNSAFE = 0x1; // 0-33 "#$%&+,/:;<=>?@[\]^`{|} 127
+const unsigned char XML_UNSAFE = 0x2; // "&'<>
+const unsigned char HTML_UNSAFE = 0x2; // "&'<>
+
+// ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 6 5 7 8 9 : ; < = > ?
+//@ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _
+//` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~
+
+const unsigned char ASCII_CLASS[128] = {
+ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+ 1,0,3,1,1,1,3,2,0,0,0,1,1,0,0,1,0,0,0,0,0,0,0,0,0,0,1,1,3,1,3,1,
+ 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,
+ 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,1,
+};
+
+size_t url_encode(char * buffer, size_t buflen,
+ const char * source, size_t srclen) {
+ if (NULL == buffer)
+ return srclen * 3 + 1;
+ if (buflen <= 0)
+ return 0;
+
+ size_t srcpos = 0, bufpos = 0;
+ while ((srcpos < srclen) && (bufpos + 1 < buflen)) {
+ unsigned char ch = source[srcpos++];
+ if ((ch < 128) && (ASCII_CLASS[ch] & URL_UNSAFE)) {
+ if (bufpos + 3 >= buflen) {
+ break;
+ }
+ buffer[bufpos+0] = '%';
+ buffer[bufpos+1] = hex_encode((ch >> 4) & 0xF);
+ buffer[bufpos+2] = hex_encode((ch ) & 0xF);
+ bufpos += 3;
+ } else {
+ buffer[bufpos++] = ch;
+ }
+ }
+ buffer[bufpos] = '\0';
+ return bufpos;
+}
+
+size_t url_decode(char * buffer, size_t buflen,
+ const char * source, size_t srclen) {
+ if (NULL == buffer)
+ return srclen + 1;
+ if (buflen <= 0)
+ return 0;
+
+ unsigned char h1, h2;
+ size_t srcpos = 0, bufpos = 0;
+ while ((srcpos < srclen) && (bufpos + 1 < buflen)) {
+ unsigned char ch = source[srcpos++];
+ if (ch == '+') {
+ buffer[bufpos++] = ' ';
+ } else if ((ch == '%')
+ && (srcpos + 1 < srclen)
+ && hex_decode(source[srcpos], &h1)
+ && hex_decode(source[srcpos+1], &h2))
+ {
+ buffer[bufpos++] = (h1 << 4) | h2;
+ srcpos += 2;
+ } else {
+ buffer[bufpos++] = ch;
+ }
+ }
+ buffer[bufpos] = '\0';
+ return bufpos;
+}
+
+size_t utf8_decode(const char* source, size_t srclen, unsigned long* value) {
+ const unsigned char* s = reinterpret_cast<const unsigned char*>(source);
+ if ((s[0] & 0x80) == 0x00) { // Check s[0] == 0xxxxxxx
+ *value = s[0];
+ return 1;
+ }
+ if ((srclen < 2) || ((s[1] & 0xC0) != 0x80)) { // Check s[1] != 10xxxxxx
+ return 0;
+ }
+ // Accumulate the trailer byte values in value16, and combine it with the
+ // relevant bits from s[0], once we've determined the sequence length.
+ unsigned long value16 = (s[1] & 0x3F);
+ if ((s[0] & 0xE0) == 0xC0) { // Check s[0] == 110xxxxx
+ *value = ((s[0] & 0x1F) << 6) | value16;
+ return 2;
+ }
+ if ((srclen < 3) || ((s[2] & 0xC0) != 0x80)) { // Check s[2] != 10xxxxxx
+ return 0;
+ }
+ value16 = (value16 << 6) | (s[2] & 0x3F);
+ if ((s[0] & 0xF0) == 0xE0) { // Check s[0] == 1110xxxx
+ *value = ((s[0] & 0x0F) << 12) | value16;
+ return 3;
+ }
+ if ((srclen < 4) || ((s[3] & 0xC0) != 0x80)) { // Check s[3] != 10xxxxxx
+ return 0;
+ }
+ value16 = (value16 << 6) | (s[3] & 0x3F);
+ if ((s[0] & 0xF8) == 0xF0) { // Check s[0] == 11110xxx
+ *value = ((s[0] & 0x07) << 18) | value16;
+ return 4;
+ }
+ return 0;
+}
+
+size_t utf8_encode(char* buffer, size_t buflen, unsigned long value) {
+ if ((value <= 0x7F) && (buflen >= 1)) {
+ buffer[0] = static_cast<unsigned char>(value);
+ return 1;
+ }
+ if ((value <= 0x7FF) && (buflen >= 2)) {
+ buffer[0] = 0xC0 | static_cast<unsigned char>(value >> 6);
+ buffer[1] = 0x80 | static_cast<unsigned char>(value & 0x3F);
+ return 2;
+ }
+ if ((value <= 0xFFFF) && (buflen >= 3)) {
+ buffer[0] = 0xE0 | static_cast<unsigned char>(value >> 12);
+ buffer[1] = 0x80 | static_cast<unsigned char>((value >> 6) & 0x3F);
+ buffer[2] = 0x80 | static_cast<unsigned char>(value & 0x3F);
+ return 3;
+ }
+ if ((value <= 0x1FFFFF) && (buflen >= 4)) {
+ buffer[0] = 0xF0 | static_cast<unsigned char>(value >> 18);
+ buffer[1] = 0x80 | static_cast<unsigned char>((value >> 12) & 0x3F);
+ buffer[2] = 0x80 | static_cast<unsigned char>((value >> 6) & 0x3F);
+ buffer[3] = 0x80 | static_cast<unsigned char>(value & 0x3F);
+ return 4;
+ }
+ return 0;
+}
+
+size_t html_encode(char * buffer, size_t buflen,
+ const char * source, size_t srclen) {
+ ASSERT(NULL != buffer); // TODO: estimate output size
+ if (buflen <= 0)
+ return 0;
+
+ size_t srcpos = 0, bufpos = 0;
+ while ((srcpos < srclen) && (bufpos + 1 < buflen)) {
+ unsigned char ch = source[srcpos];
+ if (ch < 128) {
+ srcpos += 1;
+ if (ASCII_CLASS[ch] & HTML_UNSAFE) {
+ const char * escseq = 0;
+ size_t esclen = 0;
+ switch (ch) {
+ case '<': escseq = "<"; esclen = 4; break;
+ case '>': escseq = ">"; esclen = 4; break;
+ case '\'': escseq = "'"; esclen = 5; break;
+ case '\"': escseq = """; esclen = 6; break;
+ case '&': escseq = "&"; esclen = 5; break;
+ default: ASSERT(false);
+ }
+ if (bufpos + esclen >= buflen) {
+ break;
+ }
+ memcpy(buffer + bufpos, escseq, esclen);
+ bufpos += esclen;
+ } else {
+ buffer[bufpos++] = ch;
+ }
+ } else {
+ // Largest value is 0x1FFFFF => � (10 characters)
+ char escseq[11];
+ unsigned long val;
+ if (size_t vallen = utf8_decode(&source[srcpos], srclen - srcpos, &val)) {
+ srcpos += vallen;
+ } else {
+ // Not a valid utf8 sequence, just use the raw character.
+ val = static_cast<unsigned char>(source[srcpos++]);
+ }
+ size_t esclen = sprintfn(escseq, ARRAY_SIZE(escseq), "&#%lu;", val);
+ if (bufpos + esclen >= buflen) {
+ break;
+ }
+ memcpy(buffer + bufpos, escseq, esclen);
+ bufpos += esclen;
+ }
+ }
+ buffer[bufpos] = '\0';
+ return bufpos;
+}
+
+size_t html_decode(char * buffer, size_t buflen,
+ const char * source, size_t srclen) {
+ ASSERT(NULL != buffer); // TODO: estimate output size
+ return xml_decode(buffer, buflen, source, srclen);
+}
+
+size_t xml_encode(char * buffer, size_t buflen,
+ const char * source, size_t srclen) {
+ ASSERT(NULL != buffer); // TODO: estimate output size
+ if (buflen <= 0)
+ return 0;
+
+ size_t srcpos = 0, bufpos = 0;
+ while ((srcpos < srclen) && (bufpos + 1 < buflen)) {
+ unsigned char ch = source[srcpos++];
+ if ((ch < 128) && (ASCII_CLASS[ch] & XML_UNSAFE)) {
+ const char * escseq = 0;
+ size_t esclen = 0;
+ switch (ch) {
+ case '<': escseq = "<"; esclen = 4; break;
+ case '>': escseq = ">"; esclen = 4; break;
+ case '\'': escseq = "'"; esclen = 6; break;
+ case '\"': escseq = """; esclen = 6; break;
+ case '&': escseq = "&"; esclen = 5; break;
+ default: ASSERT(false);
+ }
+ if (bufpos + esclen >= buflen) {
+ break;
+ }
+ memcpy(buffer + bufpos, escseq, esclen);
+ bufpos += esclen;
+ } else {
+ buffer[bufpos++] = ch;
+ }
+ }
+ buffer[bufpos] = '\0';
+ return bufpos;
+}
+
+size_t xml_decode(char * buffer, size_t buflen,
+ const char * source, size_t srclen) {
+ ASSERT(NULL != buffer); // TODO: estimate output size
+ if (buflen <= 0)
+ return 0;
+
+ size_t srcpos = 0, bufpos = 0;
+ while ((srcpos < srclen) && (bufpos + 1 < buflen)) {
+ unsigned char ch = source[srcpos++];
+ if (ch != '&') {
+ buffer[bufpos++] = ch;
+ } else if ((srcpos + 2 < srclen)
+ && (memcmp(source + srcpos, "lt;", 3) == 0)) {
+ buffer[bufpos++] = '<';
+ srcpos += 3;
+ } else if ((srcpos + 2 < srclen)
+ && (memcmp(source + srcpos, "gt;", 3) == 0)) {
+ buffer[bufpos++] = '>';
+ srcpos += 3;
+ } else if ((srcpos + 4 < srclen)
+ && (memcmp(source + srcpos, "apos;", 5) == 0)) {
+ buffer[bufpos++] = '\'';
+ srcpos += 5;
+ } else if ((srcpos + 4 < srclen)
+ && (memcmp(source + srcpos, "quot;", 5) == 0)) {
+ buffer[bufpos++] = '\"';
+ srcpos += 5;
+ } else if ((srcpos + 3 < srclen)
+ && (memcmp(source + srcpos, "amp;", 4) == 0)) {
+ buffer[bufpos++] = '&';
+ srcpos += 4;
+ } else if ((srcpos < srclen) && (source[srcpos] == '#')) {
+ int int_base = 10;
+ if ((srcpos + 1 < srclen) && (source[srcpos+1] == 'x')) {
+ int_base = 16;
+ srcpos += 1;
+ }
+ char * ptr;
+ // TODO: Fix hack (ptr may go past end of data)
+ unsigned long val = strtoul(source + srcpos + 1, &ptr, int_base);
+ if ((static_cast<size_t>(ptr - source) < srclen) && (*ptr == ';')) {
+ srcpos = ptr - source + 1;
+ } else {
+ // Not a valid escape sequence.
+ break;
+ }
+ if (size_t esclen = utf8_encode(buffer + bufpos, buflen - bufpos, val)) {
+ bufpos += esclen;
+ } else {
+ // Not enough room to encode the character, or illegal character
+ break;
+ }
+ } else {
+ // Unrecognized escape sequence.
+ break;
+ }
+ }
+ buffer[bufpos] = '\0';
+ return bufpos;
+}
+
+static const char HEX[] = "0123456789abcdef";
+
+char hex_encode(unsigned char val) {
+ ASSERT(val < 16);
+ return (val < 16) ? HEX[val] : '!';
+}
+
+bool hex_decode(char ch, unsigned char* val) {
+ if ((ch >= '0') && (ch <= '9')) {
+ *val = ch - '0';
+ } else if ((ch >= 'A') && (ch <= 'Z')) {
+ *val = (ch - 'A') + 10;
+ } else if ((ch >= 'a') && (ch <= 'z')) {
+ *val = (ch - 'a') + 10;
+ } else {
+ return false;
+ }
+ return true;
+}
+
+size_t hex_encode(char* buffer, size_t buflen,
+ const char* csource, size_t srclen) {
+ return hex_encode_with_delimiter(buffer, buflen, csource, srclen, 0);
+}
+
+size_t hex_encode_with_delimiter(char* buffer, size_t buflen,
+ const char* csource, size_t srclen,
+ char delimiter) {
+ ASSERT(NULL != buffer); // TODO: estimate output size
+ if (buflen == 0)
+ return 0;
+
+ // Init and check bounds.
+ const unsigned char* bsource =
+ reinterpret_cast<const unsigned char*>(csource);
+ size_t srcpos = 0, bufpos = 0;
+ size_t needed = delimiter ? (srclen * 3) : (srclen * 2 + 1);
+ if (buflen < needed)
+ return 0;
+
+ while (srcpos < srclen) {
+ unsigned char ch = bsource[srcpos++];
+ buffer[bufpos ] = hex_encode((ch >> 4) & 0xF);
+ buffer[bufpos+1] = hex_encode((ch ) & 0xF);
+ bufpos += 2;
+
+ // Don't write a delimiter after the last byte.
+ if (delimiter && (srcpos < srclen)) {
+ buffer[bufpos] = delimiter;
+ ++bufpos;
+ }
+ }
+
+ // Null terminate.
+ buffer[bufpos] = '\0';
+ return bufpos;
+}
+
+std::string hex_encode(const char* source, size_t srclen) {
+ return hex_encode_with_delimiter(source, srclen, 0);
+}
+
+std::string hex_encode_with_delimiter(const char* source, size_t srclen,
+ char delimiter) {
+ const size_t kBufferSize = srclen * 3;
+ char* buffer = STACK_ARRAY(char, kBufferSize);
+ size_t length = hex_encode_with_delimiter(buffer, kBufferSize,
+ source, srclen, delimiter);
+ ASSERT(srclen == 0 || length > 0);
+ return std::string(buffer, length);
+}
+
+size_t hex_decode(char * cbuffer, size_t buflen,
+ const char * source, size_t srclen) {
+ return hex_decode_with_delimiter(cbuffer, buflen, source, srclen, 0);
+}
+
+size_t hex_decode_with_delimiter(char* cbuffer, size_t buflen,
+ const char* source, size_t srclen,
+ char delimiter) {
+ ASSERT(NULL != cbuffer); // TODO: estimate output size
+ if (buflen == 0)
+ return 0;
+
+ // Init and bounds check.
+ unsigned char* bbuffer = reinterpret_cast<unsigned char*>(cbuffer);
+ size_t srcpos = 0, bufpos = 0;
+ size_t needed = (delimiter) ? (srclen + 1) / 3 : srclen / 2;
+ if (buflen < needed)
+ return 0;
+
+ while (srcpos < srclen) {
+ if ((srclen - srcpos) < 2) {
+ // This means we have an odd number of bytes.
+ return 0;
+ }
+
+ unsigned char h1, h2;
+ if (!hex_decode(source[srcpos], &h1) ||
+ !hex_decode(source[srcpos + 1], &h2))
+ return 0;
+
+ bbuffer[bufpos++] = (h1 << 4) | h2;
+ srcpos += 2;
+
+ // Remove the delimiter if needed.
+ if (delimiter && (srclen - srcpos) > 1) {
+ if (source[srcpos] != delimiter)
+ return 0;
+ ++srcpos;
+ }
+ }
+
+ return bufpos;
+}
+
+size_t hex_decode(char* buffer, size_t buflen, const std::string& source) {
+ return hex_decode_with_delimiter(buffer, buflen, source, 0);
+}
+size_t hex_decode_with_delimiter(char* buffer, size_t buflen,
+ const std::string& source, char delimiter) {
+ return hex_decode_with_delimiter(buffer, buflen,
+ source.c_str(), source.length(), delimiter);
+}
+
+size_t transform(std::string& value, size_t maxlen, const std::string& source,
+ Transform t) {
+ char* buffer = STACK_ARRAY(char, maxlen + 1);
+ size_t length = t(buffer, maxlen + 1, source.data(), source.length());
+ value.assign(buffer, length);
+ return length;
+}
+
+std::string s_transform(const std::string& source, Transform t) {
+ // Ask transformation function to approximate the destination size (returns upper bound)
+ size_t maxlen = t(NULL, 0, source.data(), source.length());
+ char * buffer = STACK_ARRAY(char, maxlen);
+ size_t len = t(buffer, maxlen, source.data(), source.length());
+ std::string result(buffer, len);
+ return result;
+}
+
+size_t tokenize(const std::string& source, char delimiter,
+ std::vector<std::string>* fields) {
+ ASSERT(NULL != fields);
+ fields->clear();
+ size_t last = 0;
+ for (size_t i = 0; i < source.length(); ++i) {
+ if (source[i] == delimiter) {
+ if (i != last) {
+ fields->push_back(source.substr(last, i - last));
+ }
+ last = i + 1;
+ }
+ }
+ if (last != source.length()) {
+ fields->push_back(source.substr(last, source.length() - last));
+ }
+ return fields->size();
+}
+
+size_t tokenize_append(const std::string& source, char delimiter,
+ std::vector<std::string>* fields) {
+ if (!fields) return 0;
+
+ std::vector<std::string> new_fields;
+ tokenize(source, delimiter, &new_fields);
+ fields->insert(fields->end(), new_fields.begin(), new_fields.end());
+ return fields->size();
+}
+
+size_t tokenize(const std::string& source, char delimiter, char start_mark,
+ char end_mark, std::vector<std::string>* fields) {
+ if (!fields) return 0;
+ fields->clear();
+
+ std::string remain_source = source;
+ while (!remain_source.empty()) {
+ size_t start_pos = remain_source.find(start_mark);
+ if (std::string::npos == start_pos) break;
+ std::string pre_mark;
+ if (start_pos > 0) {
+ pre_mark = remain_source.substr(0, start_pos - 1);
+ }
+
+ ++start_pos;
+ size_t end_pos = remain_source.find(end_mark, start_pos);
+ if (std::string::npos == end_pos) break;
+
+ // We have found the matching marks. First tokenize the pre-mask. Then add
+ // the marked part as a single field. Finally, loop back for the post-mark.
+ tokenize_append(pre_mark, delimiter, fields);
+ fields->push_back(remain_source.substr(start_pos, end_pos - start_pos));
+ remain_source = remain_source.substr(end_pos + 1);
+ }
+
+ return tokenize_append(remain_source, delimiter, fields);
+}
+
+size_t split(const std::string& source, char delimiter,
+ std::vector<std::string>* fields) {
+ ASSERT(NULL != fields);
+ fields->clear();
+ size_t last = 0;
+ for (size_t i = 0; i < source.length(); ++i) {
+ if (source[i] == delimiter) {
+ fields->push_back(source.substr(last, i - last));
+ last = i + 1;
+ }
+ }
+ fields->push_back(source.substr(last, source.length() - last));
+ return fields->size();
+}
+
+char make_char_safe_for_filename(char c) {
+ if (c < 32)
+ return '_';
+
+ switch (c) {
+ case '<':
+ case '>':
+ case ':':
+ case '"':
+ case '/':
+ case '\\':
+ case '|':
+ case '*':
+ case '?':
+ return '_';
+
+ default:
+ return c;
+ }
+}
+
+/*
+void sprintf(std::string& value, size_t maxlen, const char * format, ...) {
+ char * buffer = STACK_ARRAY(char, maxlen + 1);
+ va_list args;
+ va_start(args, format);
+ value.assign(buffer, vsprintfn(buffer, maxlen + 1, format, args));
+ va_end(args);
+}
+*/
+
+/////////////////////////////////////////////////////////////////////////////
+
+} // namespace rtc