fix list parsing logic and add error messages

ports/boost/CONTROL

@@ -3,7 +3,33 @@ Source: boost
 Version: 1.70.0
 Homepage: https://boost.org
 Description: Peer-reviewed portable C++ source libraries
-Build-Depends: boost-accumulators, boost-algorithm, boost-align, boost-any, boost-array, boost-asio, boost-assert, boost-assign, boost-atomic, boost-beast, boost-bimap, boost-bind, boost-callable-traits, boost-chrono, boost-circular-buffer, boost-compatibility, boost-compute, boost-concept-check, boost-config, boost-container, boost-container-hash, boost-context (!uwp), boost-contract (!arm), boost-conversion, boost-convert, boost-core, boost-coroutine (!uwp), boost-coroutine2, boost-crc, boost-date-time, boost-detail, boost-disjoint-sets, boost-dll, boost-dynamic-bitset, boost-endian, boost-exception, boost-fiber (windows), boost-filesystem (!uwp), boost-flyweight, boost-foreach, boost-format, boost-function, boost-functional, boost-function-types, boost-fusion, boost-geometry, boost-gil, boost-graph, boost-graph-parallel, boost-hana, boost-heap, boost-histogram, boost-hof, boost-icl, boost-integer, boost-interprocess, boost-intrusive, boost-io, boost-iostreams (!uwp), boost-iterator, boost-lambda, boost-lexical-cast, boost-locale (!uwp), boost-local-function, boost-lockfree, boost-log (!uwp), boost-logic, boost-math, boost-metaparse, boost-move, boost-mp11, boost-mpl, boost-msm, boost-multiprecision, boost-multi-array, boost-multi-index, boost-numeric-conversion, boost-interval, boost-odeint, boost-ublas, boost-safe-numerics, boost-optional, boost-outcome, boost-parameter, boost-parameter-python (windows), boost-phoenix, boost-polygon, boost-poly-collection, boost-pool, boost-predef, boost-preprocessor, boost-process, boost-program-options, boost-property-map, boost-property-tree, boost-proto, boost-ptr-container, boost-python (windows), boost-qvm, boost-random, boost-range, boost-ratio, boost-rational, boost-regex, boost-numeric-conversion, boost-interval, boost-odeint, boost-ublas, boost-safe-numerics, boost-scope-exit, boost-serialization, boost-signals2, boost-smart-ptr, boost-sort, boost-spirit, boost-stacktrace (!uwp), boost-statechart, boost-static-assert, boost-system, boost-test (!uwp), boost-thread (!arm), boost-throw-exception, boost-timer, boost-tokenizer, boost-tti, boost-tuple, boost-typeof, boost-type-erasure (!arm), boost-type-index, boost-type-traits, boost-units, boost-unordered, boost-utility, boost-uuid, boost-variant, boost-vmd, boost-wave (!uwp), boost-winapi, boost-xpressive, boost-yap
+Build-Depends: boost-accumulators, boost-algorithm, boost-align, boost-any, boost-array, 
+     boost-asio, boost-assert, boost-assign, boost-atomic, boost-beast, boost-bimap, boost-bind, 
+     boost-callable-traits, boost-chrono, boost-circular-buffer, boost-compatibility, 
+     boost-compute, boost-concept-check, boost-config, boost-container, boost-container-hash, 
+     boost-context (!uwp), boost-contract (!arm), boost-conversion, boost-convert, boost-core, 
+     boost-coroutine (!uwp), boost-coroutine2, boost-crc, boost-date-time, boost-detail, 
+     boost-disjoint-sets, boost-dll, boost-dynamic-bitset, boost-endian, boost-exception, 
+     boost-fiber (windows), boost-filesystem (!uwp), boost-flyweight, boost-foreach, boost-format, 
+     boost-function, boost-functional, boost-function-types, boost-fusion, boost-geometry, 
+     boost-gil, boost-graph, boost-graph-parallel, boost-hana, boost-heap, boost-histogram, 
+     boost-hof, boost-icl, boost-integer, boost-interprocess, boost-intrusive, boost-io, 
+     boost-iostreams (!uwp), boost-iterator, boost-lambda, boost-lexical-cast, boost-locale (!uwp), 
+     boost-local-function, boost-lockfree, boost-log (!uwp), boost-logic, boost-math, 
+     boost-metaparse, boost-move, boost-mp11, boost-mpl, boost-msm, boost-multiprecision, 
+     boost-multi-array, boost-multi-index, boost-numeric-conversion, boost-interval, boost-odeint, 
+     boost-ublas, boost-safe-numerics, boost-optional, boost-outcome, boost-parameter, 
+     boost-parameter-python (windows), boost-phoenix, boost-polygon, boost-poly-collection, 
+     boost-pool, boost-predef, boost-preprocessor, boost-process, boost-program-options, 
+     boost-property-map, boost-property-tree, boost-proto, boost-ptr-container, 
+     boost-python (windows), boost-qvm, boost-random, boost-range, boost-ratio, boost-rational, 
+     boost-regex, boost-numeric-conversion, boost-interval, boost-odeint, boost-ublas, 
+     boost-safe-numerics, boost-scope-exit, boost-serialization, boost-signals2, boost-smart-ptr, 
+     boost-sort, boost-spirit, boost-stacktrace (!uwp), boost-statechart, boost-static-assert, 
+     boost-system, boost-test (!uwp), boost-thread (!arm), boost-throw-exception, boost-timer, 
+     boost-tokenizer, boost-tti, boost-tuple, boost-typeof, boost-type-erasure (!arm), 
+     boost-type-index, boost-type-traits, boost-units, boost-unordered, boost-utility, boost-uuid, 
+     boost-variant, boost-vmd, boost-wave (!uwp), boost-winapi, boost-xpressive, boost-yap
 
 Feature: mpi
 Description: Build with MPI support

ports/cpprestsdk/CONTROL

@@ -1,23 +1,26 @@
 Source: cpprestsdk
 Version: 2.10.14-1
-Build-Depends: openssl (!uwp&!windows), boost-system (!uwp&!windows), boost-date-time (!uwp&!windows), boost-regex (!uwp&!windows), boost-thread (!uwp&!windows), boost-filesystem (!uwp&!windows), boost-random (!uwp&!windows), boost-chrono (!uwp&!windows), boost-asio (!uwp&!windows)
+Build-Depends: openssl (!uwp&!windows), boost-system (!uwp&!windows), 
+  boost-date-time (!uwp&!windows), boost-regex (!uwp&!windows), boost-thread (!uwp&!windows),
+  boost-filesystem (!uwp&!windows), boost-random (!uwp&!windows), boost-chrono (!uwp&!windows), 
+  boost-asio (!uwp&!windows)
 Homepage: https://github.com/Microsoft/cpprestsdk
 Description: C++11 JSON, REST, and OAuth library
   The C++ REST SDK is a Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. This project aims to help C++ developers connect to and interact with services.
 Default-Features: default-features
 
 Feature: default-features
-Build-Depends: cpprestsdk[brotli] (windows), cpprestsdk[core], cpprestsdk[compression], cpprestsdk[websockets]
+Build-Depends: cpprestsdk[brotli] (windows), cpprestsdk[core,compression,websockets]
 Description: Features installed by default
 
 Feature: compression
 Build-Depends: zlib
 Description: HTTP Compression support
 
 Feature: websockets
-Build-Depends: cpprestsdk[core], cpprestsdk[compression], websocketpp (!uwp), openssl (!uwp), boost-system (!uwp), boost-date-time (!uwp), boost-regex (!uwp)
+Build-Depends: cpprestsdk[core,compression], websocketpp (!uwp), openssl (!uwp), boost-system (!uwp), boost-date-time (!uwp), boost-regex (!uwp)
 Description: Websockets support
 
 Feature: brotli
-Build-Depends: cpprestsdk[core], cpprestsdk[compression], brotli
+Build-Depends: cpprestsdk[core,compression], brotli
 Description: Brotli compression support

toolsrc/VERSION.txt

@@ -1 +1 @@
-"2019.08.16"
+"2019.08.23"

toolsrc/src/vcpkg/parse.cpp

@@ -2,6 +2,7 @@
 
 #include <vcpkg/parse.h>
 
+#include <vcpkg/base/system.print.h>
 #include <vcpkg/base/util.h>
 
 namespace vcpkg::Parse
@@ -44,6 +45,8 @@ namespace vcpkg::Parse
         return nullptr;
     }
 
+    static bool is_whitespace(char c) { return c == ' ' || c == '\t' || c == '\n' || c == '\r'; }
+
     std::vector<std::string> parse_comma_list(const std::string& str)
     {
         if (str.empty())
@@ -53,26 +56,93 @@ namespace vcpkg::Parse
 
         std::vector<std::string> out;
 
-        size_t cur = 0;
+        auto iter = str.cbegin();
+
         do
         {
-            auto pos = str.find(',', cur);
-            if (pos == std::string::npos)
+            // Trim leading whitespace of each element
+            while (iter != str.cend() && is_whitespace(*iter))
+            {
+                ++iter;
+            }
+
+            // Allow commas inside of [].
+            bool bracket_nesting = false;
+
+            auto element_begin = iter;
+            auto element_end = iter;
+            while (iter != str.cend() && (*iter != ',' || bracket_nesting))
+            {
+                char value = *iter;
+
+                // do not support nested []
+                if (value == '[')
+                {
+                    if (bracket_nesting)
+                    {
+                        Checks::exit_with_message(VCPKG_LINE_INFO,
+                                                  "Lists do not support nested brackets, Did you forget a ']'?\n"
+                                                  ">    '%s'\n"
+                                                  ">     %s^\n",
+                                                  str,
+                                                  std::string(static_cast<int>(iter - str.cbegin()), ' '));
+                    }
+                    bracket_nesting = true;
+                }
+                else if (value == ']')
+                {
+                    if (!bracket_nesting)
+                    {
+                        Checks::exit_with_message(VCPKG_LINE_INFO,
+                                                  "Found unmatched ']'.  Did you forget a '['?\n"
+                                                  ">    '%s'\n"
+                                                  ">     %s^\n",
+                                                  str,
+                                                  std::string(static_cast<int>(iter - str.cbegin()), ' '));
+                    }
+                    bracket_nesting = false;
+                }
+
+                ++iter;
+
+                // Trim ending whitespace
+                if (!is_whitespace(value))
+                {
+                    // Update element_end after iter is incremented so it will be one past.
+                    element_end = iter;
+                }
+            }
+
+            if (element_begin == element_end)
             {
-                out.push_back(str.substr(cur));
-                break;
+                Checks::exit_with_message(VCPKG_LINE_INFO,
+                                          "Empty element in list\n"
+                                          ">    '%s'\n"
+                                          ">     %s^\n",
+                                          str,
+                                          std::string(static_cast<int>(element_begin - str.cbegin()), ' '));
             }
-            out.push_back(str.substr(cur, pos - cur));
+            out.push_back({element_begin, element_end});
 
-            // skip comma and space
-            ++pos;
-            while (str[pos] == ' ')
+            if (iter != str.cend())
             {
-                ++pos;
+                Checks::check_exit(VCPKG_LINE_INFO, *iter == ',', "Internal parsing error - expected comma");
+
+                // Not at the end, must be at a comma that needs to be stepped over
+                ++iter;
+
+                if (iter == str.end())
+                {
+                    Checks::exit_with_message(VCPKG_LINE_INFO,
+                                              "Empty element in list\n"
+                                              ">    '%s'\n"
+                                              ">     %s^\n",
+                                              str,
+                                              std::string(str.length(), ' '));
+                }
             }
 
-            cur = pos;
-        } while (cur != std::string::npos);
+        } while (iter != str.cend());
 
         return out;
     }