Remove dependency on boost string algos

3 files changed, 30 insertions, 13 deletions

diff --git a/src/lib/utils/parsing.cpp b/src/lib/utils/parsing.cpp
index cf47e24f8..c5081dcd7 100644
--- a/src/lib/utils/parsing.cpp
+++ b/src/lib/utils/parsing.cpp
@@ -1,6 +1,6 @@
 /*
 * Various string utils and parsing functions
-* (C) 1999-2007,2013 Jack Lloyd
+* (C) 1999-2007,2013,2014 Jack Lloyd
 *
 * Distributed under the terms of the Botan license
 */
@@ -105,18 +105,21 @@ std::vector<std::string> parse_algorithm_name(const std::string& namex)
    return elems;
    }
 
-/*
-* Split the string on slashes
-*/
 std::vector<std::string> split_on(const std::string& str, char delim)
    {
+   return split_on_pred(str, [delim](char c) { return c == delim; });
+   }
+
+std::vector<std::string> split_on_pred(const std::string& str,
+                                       std::function<bool (char)> pred)
+   {
    std::vector<std::string> elems;
    if(str == "") return elems;
 
    std::string substr;
    for(auto i = str.begin(); i != str.end(); ++i)
       {
-      if(*i == delim)
+      if(pred(*i))
          {
          if(substr != "")
             elems.push_back(substr);
diff --git a/src/lib/utils/parsing.h b/src/lib/utils/parsing.h
index b37e3cb62..f2642ff95 100644
--- a/src/lib/utils/parsing.h
+++ b/src/lib/utils/parsing.h
@@ -37,6 +37,14 @@ BOTAN_DLL std::vector<std::string> split_on(
    const std::string& str, char delim);
 
 /**
+* Split a string on a character predicate
+* @param str the input string
+*/
+BOTAN_DLL std::vector<std::string>
+split_on_pred(const std::string& str,
+              std::function<bool (char)> pred);
+
+/**
 * Erase characters from a string
 */
 BOTAN_DLL std::string erase_chars(const std::string& str, const std::set<char>& chars);
diff --git a/src/lib/utils/read_cfg.cpp b/src/lib/utils/read_cfg.cpp
index ad57a8b3e..31348832a 100644
--- a/src/lib/utils/read_cfg.cpp
+++ b/src/lib/utils/read_cfg.cpp
@@ -1,12 +1,12 @@
 /*
 * Simple config/test file reader
-* (C) 2013 Jack Lloyd
+* (C) 2013,2014 Jack Lloyd
 *
 * Distributed under the terms of the Botan license
 */
 
 #include <botan/parsing.h>
-#include <boost/algorithm/string.hpp>
+#include <ctype.h>
 
 namespace Botan {
 
@@ -21,11 +21,18 @@ void lex_cfg(std::istream& is,
 
       while(is.good() && s.back() == '\\')
          {
-         boost::trim_if(s, boost::is_any_of("\\\n"));
+         while(s.size() && (s.back() == '\\' || s.back() == '\n'))
+            s.resize(s.size()-1);
+
          std::string x;
          std::getline(is, x);
-         boost::trim_left(x);
-         s += x;
+
+         size_t i = 0;
+
+         while(i < x.size() && (::isspace(x[i])))
+            ++i;
+
+         s += x.substr(i);
          }
 
       auto comment = s.find('#');
@@ -35,10 +42,9 @@ void lex_cfg(std::istream& is,
       if(s.empty())
          continue;
 
-      std::vector<std::string> parts;
-      boost::split(parts, s, boost::is_any_of(" \t\n"), boost::token_compress_on);
+      auto parts = split_on_pred(s, [](char c) { return ::isspace(c); });
 
-      for(auto p : parts)
+      for(auto& p : parts)
          {
          if(p.empty())
             continue;