aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--bpkg/buildfile3
-rw-r--r--bpkg/manifest-serializer73
-rw-r--r--bpkg/manifest-serializer.cxx238
-rw-r--r--tests/buildfile2
-rw-r--r--tests/manifest-roundtrip/buildfile9
-rw-r--r--tests/manifest-roundtrip/driver.cxx57
-rw-r--r--tests/manifest-roundtrip/manifest29
-rw-r--r--tests/manifest-serializer/buildfile7
-rw-r--r--tests/manifest-serializer/driver.cxx245
9 files changed, 661 insertions, 2 deletions
diff --git a/bpkg/buildfile b/bpkg/buildfile
index b7c1c9f..45d9d89 100644
--- a/bpkg/buildfile
+++ b/bpkg/buildfile
@@ -2,4 +2,5 @@
# copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
# license : MIT; see accompanying LICENSE file
-lib{bpkg}: cxx{manifest-parser}
+import libs += libhello
+lib{bpkg}: cxx{manifest-parser manifest-serializer} $libs
diff --git a/bpkg/manifest-serializer b/bpkg/manifest-serializer
new file mode 100644
index 0000000..2c5a09b
--- /dev/null
+++ b/bpkg/manifest-serializer
@@ -0,0 +1,73 @@
+// file : bpkg/manifest-serializer -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+// license : MIT; see accompanying LICENSE file
+
+#ifndef BPKG_MANIFEST_SERIALIZER
+#define BPKG_MANIFEST_SERIALIZER
+
+#include <string>
+#include <iosfwd>
+#include <cstddef> // size_t
+#include <stdexcept> // runtime_error
+
+namespace bpkg
+{
+ class manifest_serialization: public std::runtime_error
+ {
+ public:
+ manifest_serialization (const std::string& name,
+ const std::string& description);
+
+ std::string name;
+ std::string description;
+ };
+
+ class manifest_serializer
+ {
+ public:
+ manifest_serializer (std::ostream& os, const std::string& name)
+ : os_ (os), name_ (name) {}
+
+ const std::string&
+ name () const {return name_;}
+
+ // The first name-value pair should be the special "start-of-manifest"
+ // with empty name and value being the format version. After that we
+ // have a sequence of ordinary pairs which are the manifest. At the
+ // end of the manifest we have the special "end-of-manifest" pair
+ // with empty name and value. After that we can either have another
+ // start-of-manifest pair (in which case the whole sequence repeats
+ // from the beginning) or we get another end-of-manifest pair which
+ // signals the end of stream.
+ //
+ void
+ next (const std::string& name, const std::string& value);
+
+ // Write a comment. The supplied text is prefixed with "# " and
+ // terminated with a newline.
+ //
+ void
+ comment (const std::string&);
+
+ private:
+ void
+ check_name (const std::string&);
+
+ // Write 'n' characters from 's' (assuming there are no newlines)
+ // split into multiple lines at or near the 78 characters
+ // boundary. The first line starts at the 'column' offset.
+ //
+ void
+ write_value (std::size_t column, const char* s, std::size_t n);
+
+ private:
+ enum {start, body, end} s_ = start;
+ std::string version_; // Current format version.
+
+ private:
+ std::ostream& os_;
+ const std::string name_;
+ };
+}
+
+#endif // BPKG_MANIFEST_SERIALIZER
diff --git a/bpkg/manifest-serializer.cxx b/bpkg/manifest-serializer.cxx
new file mode 100644
index 0000000..1d9fd89
--- /dev/null
+++ b/bpkg/manifest-serializer.cxx
@@ -0,0 +1,238 @@
+// file : bpkg/manifest-serializer.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+// license : MIT; see accompanying LICENSE file
+
+#include <bpkg/manifest-serializer>
+
+#include <ostream>
+#include <cassert>
+
+using namespace std;
+
+namespace bpkg
+{
+ using serialization = manifest_serialization;
+
+ void manifest_serializer::
+ next (const string& n, const string& v)
+ {
+ switch (s_)
+ {
+ case start:
+ {
+ if (!n.empty ())
+ throw serialization (name_, "format version pair expected");
+
+ if (v.empty ())
+ {
+ // End of manifests.
+ //
+ os_.flush ();
+ s_ = end;
+ break;
+ }
+
+ if (v != "1")
+ throw serialization (name_, "unsupported format version " + v);
+
+ os_ << ':';
+
+ if (v != version_)
+ {
+ os_ << ' ' << v;
+ version_ = v;
+ }
+
+ os_ << endl;
+ s_ = body;
+ break;
+ }
+ case body:
+ {
+ if (n.empty ())
+ {
+ if (!v.empty ())
+ throw serialization (name_, "non-empty value in end pair");
+
+ s_ = start;
+ break;
+ }
+
+ check_name (n);
+
+ os_ << n << ':';
+
+ if (!v.empty ())
+ {
+ os_ << ' ';
+
+ // Use the multi-line mode in any of the following cases:
+ //
+ // - name is too long (say longer than 37 (78/2 - 2) characters;
+ // we cannot start on the next line since that would start the
+ // multi-line mode)
+ // - value contains newlines
+ // - value contains leading/trailing whitespaces
+ //
+ if (n.size () > 37 ||
+ v.find ('\n') != string::npos ||
+ v.front () == ' ' || v.front () == '\t' ||
+ v.back () == ' ' || v.back () == '\t')
+ {
+ os_ << "\\" << endl; // Multi-line mode introductor.
+
+ // Chunk the value into fragments separated by newlines.
+ //
+ for (size_t i (0), p (v.find ('\n')); ; p = v.find ('\n', i))
+ {
+ if (p == string::npos)
+ {
+ // Last chunk.
+ //
+ write_value (0, v.c_str () + i, v.size () - i);
+ break;
+ }
+
+ write_value (0, v.c_str () + i, p - i);
+ os_ << endl;
+ i = p + 1;
+ }
+
+ os_ << endl << "\\"; // Multi-line mode terminator.
+ }
+ else
+ write_value (n.size () + 2, v.c_str (), v.size ());
+ }
+
+ os_ << endl;
+ break;
+ }
+ case end:
+ {
+ throw serialization (name_, "serialization after eos");
+ }
+ }
+ }
+
+ void manifest_serializer::
+ comment (const string& t)
+ {
+ if (s_ == end)
+ throw serialization (name_, "serialization after eos");
+
+ os_ << '#';
+
+ if (!t.empty ())
+ os_ << ' ' << t;
+
+ os_ << endl;
+ }
+
+ void manifest_serializer::
+ check_name (const string& n)
+ {
+ if (n[0] == '#')
+ throw serialization (name_, "name starts with '#'");
+
+ for (char c: n)
+ {
+ switch (c)
+ {
+ case ' ':
+ case '\t':
+ case '\n': throw serialization (name_, "name contains whitespace");
+ case ':': throw serialization (name_, "name contains ':'");
+ default: break;
+ }
+ }
+ }
+
+ void manifest_serializer::
+ write_value (size_t cl, const char* s, size_t n)
+ {
+ char c ('\0');
+
+ // The idea is to break on the 77th character (i.e., write it
+ // on the next line) which means we have written 76 characters
+ // on this line plus 2 for '\' and '\n', which gives us 78.
+ //
+ for (const char* e (s + n); s != e; s++, cl++)
+ {
+ c = *s;
+ bool br (false); // Break the line.
+
+ // If this is a whitespace, see if it's a good place to break the
+ // line.
+ //
+ if (c == ' ' || c == '\t')
+ {
+ // Find the next whitespace (or the end) and see if it is a better
+ // place.
+ //
+ for (const char* w (s + 1); ; w++)
+ {
+ if (w == e || *w == ' ' || *w == '\t')
+ {
+ // Is this whitespace past where we need to break? Also see
+ // below the "hard" break case for why we use 78 at the end.
+ //
+ if (cl + static_cast<size_t> (w - s) > (w != e ? 77 : 78))
+ {
+ // Only break if this whitespace is close enough to
+ // the end of the line.
+ //
+ br = (cl > 57);
+ }
+
+ break;
+ }
+ }
+ }
+
+ // Do we have to do a "hard" break (i.e., without a whitespace)?
+ // If there is just one character left, then instead of writing
+ // '\' and then the character on the next line, we might as well
+ // write it on this line.
+ //
+ if (cl == (s + 1 != e ? 77 : 78))
+ br = true;
+
+ if (br)
+ {
+ os_ << '\\' << endl;
+ cl = 0;
+ }
+
+ os_ << c;
+ }
+
+ // What comes next is always a newline. I the last character that
+ // we have written is a backslash, escape it.
+ //
+ if (c == '\\')
+ os_ << '\\';
+ }
+
+ // manifest_serialization
+ //
+
+ static string
+ format (const string& n, const string& d)
+ {
+ string r;
+ if (!n.empty ())
+ {
+ r += n;
+ r += ": ";
+ }
+ r += "error: ";
+ r += d;
+ return r;
+ }
+
+ manifest_serialization::
+ manifest_serialization (const string& n, const string& d)
+ : runtime_error (format (n, d)), name (n), description (d)
+ {
+ }
+}
diff --git a/tests/buildfile b/tests/buildfile
index 8832040..d7b8b7f 100644
--- a/tests/buildfile
+++ b/tests/buildfile
@@ -2,6 +2,6 @@
# copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
# license : MIT; see accompanying LICENSE file
-d = manifest-parser/
+d = manifest-parser/ manifest-serializer/ manifest-roundtrip/
.: $d
include $d
diff --git a/tests/manifest-roundtrip/buildfile b/tests/manifest-roundtrip/buildfile
new file mode 100644
index 0000000..0883303
--- /dev/null
+++ b/tests/manifest-roundtrip/buildfile
@@ -0,0 +1,9 @@
+# file : tests/manifest-roundtrip/buildfile
+# copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+# license : MIT; see accompanying LICENSE file
+
+exe{driver}: cxx{driver} ../../bpkg/lib{bpkg}
+
+include ../../bpkg/
+
+# test: ./driver manifest | diff -u manifest -
diff --git a/tests/manifest-roundtrip/driver.cxx b/tests/manifest-roundtrip/driver.cxx
new file mode 100644
index 0000000..45abc67
--- /dev/null
+++ b/tests/manifest-roundtrip/driver.cxx
@@ -0,0 +1,57 @@
+// file : tests/manifest-roundtrip/driver.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+// license : MIT; see accompanying LICENSE file
+
+#include <fstream>
+#include <iostream>
+
+#include <bpkg/manifest-parser>
+#include <bpkg/manifest-serializer>
+
+using namespace std;
+using namespace bpkg;
+
+int
+main (int argc, char* argv[])
+{
+ if (argc != 2)
+ {
+ cerr << "usage: " << argv[0] << " <file>" << endl;
+ return 1;
+ }
+
+ try
+ {
+ ifstream ifs;
+ ifs.exceptions (ifstream::badbit | ifstream::failbit);
+ ifs.open (argv[1], ifstream::in | ifstream::binary);
+
+ manifest_parser p (ifs, "");
+ manifest_serializer s (cout, "stdout");
+
+ for (bool eom (true), eos (false); !eos; )
+ {
+ auto nv (p.next ());
+
+ if (nv.empty ()) // End pair.
+ {
+ eos = eom;
+ eom = true;
+ }
+ else
+ eom = false;
+
+ s.next (nv.name, nv.value);
+ }
+ }
+ catch (const ios_base::failure&)
+ {
+ cerr << "io failure" << endl;
+ return 1;
+ }
+ catch (const std::exception& e)
+ {
+ cerr << e.what () << endl;
+ return 1;
+ }
+}
diff --git a/tests/manifest-roundtrip/manifest b/tests/manifest-roundtrip/manifest
new file mode 100644
index 0000000..31d6b28
--- /dev/null
+++ b/tests/manifest-roundtrip/manifest
@@ -0,0 +1,29 @@
+: 1
+name: libbpkg
+version: 1.0.1
+summary: build2 package manager library
+license: MIT
+tags: c++, package, manager, bpkg
+description: A very very very very very very very very very very very very\
+ very very very very very very very very very very very very very very very\
+ very very long description.
+changes: \
+1.0.1
+ - Fixed a very very very very very very very very very very very very very\
+ very annoying bug.
+1.0.0
+ - Firts public release
+ - Lots of really cool features
+\
+url: http://www.codesynthesis.com/projects/libstudxml/
+email: build-users@codesynthesis.com; Public mailing list, posts by\
+ non-members are allowed but moderated.
+package-email: boris@codesynthesis.com; Direct email to the author.
+depends: libbutl
+requires: c++11
+:
+path: c:\windows\\
+path: \
+
+c:\windows\\
+\
diff --git a/tests/manifest-serializer/buildfile b/tests/manifest-serializer/buildfile
new file mode 100644
index 0000000..b1dfb78
--- /dev/null
+++ b/tests/manifest-serializer/buildfile
@@ -0,0 +1,7 @@
+# file : tests/manifest-serializer/buildfile
+# copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+# license : MIT; see accompanying LICENSE file
+
+exe{driver}: cxx{driver} ../../bpkg/lib{bpkg}
+
+include ../../bpkg/
diff --git a/tests/manifest-serializer/driver.cxx b/tests/manifest-serializer/driver.cxx
new file mode 100644
index 0000000..21bca08
--- /dev/null
+++ b/tests/manifest-serializer/driver.cxx
@@ -0,0 +1,245 @@
+// file : tests/manifest-serializer/driver.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+// license : MIT; see accompanying LICENSE file
+
+#include <vector>
+#include <string>
+#include <utility> // pair
+#include <cassert>
+#include <sstream>
+#include <iostream>
+
+#include <bpkg/manifest-serializer>
+
+using namespace std;
+using namespace bpkg;
+
+using pairs = vector<pair<string, string>>;
+
+static bool
+test (const pairs& manifest, const string& expected);
+
+static bool
+fail (const pairs& manifest);
+
+int
+main ()
+{
+ // Comments.
+ //
+ assert (test ({{"#", ""}}, "#\n"));
+ assert (test ({{"#", "x"}}, "# x\n"));
+ assert (test ({{"#", "x"},{"#", "y"},{"#", ""}}, "# x\n# y\n#\n"));
+ assert (fail ({{"",""},{"#", "x"}})); // serialization after eos
+
+ // Empty manifest stream.
+ //
+ assert (test ({}, ""));
+ assert (test ({{"",""}}, ""));
+
+ // Empty manifest.
+ //
+ assert (test ({{"","1"},{"",""},{"",""}}, ": 1\n"));
+ assert (test ({{"","1"},{"",""},{"","1"},{"",""},{"",""}}, ": 1\n:\n"));
+
+ // Invalid manifests.
+ //
+ assert (fail ({{"a",""}})); // format version pair expected
+ assert (fail ({{"","1"},{"",""},{"a",""}})); // format version pair expected
+ assert (fail ({{"","9"}})); // unsupported format version 9
+ assert (fail ({{"","1"},{"","x"}})); // non-empty value in end pair
+ assert (fail ({{"",""},{"","1"}})); // serialization after eos
+
+ // Single manifest.
+ //
+ assert (test ({{"","1"},{"a","x"},{"",""},{"",""}}, ": 1\na: x\n"));
+ assert (test ({{"","1"},{"a","x"},{"b","y"},{"",""},{"",""}},
+ ": 1\na: x\nb: y\n"));
+ assert (test ({{"","1"},{"#","c"},{"a","x"},{"",""},{"",""}},
+ ": 1\n# c\na: x\n"));
+
+ // Multiple manifests.
+ //
+ assert (test ({{"","1"},{"a","x"},{"",""},
+ {"","1"},{"b","y"},{"",""},{"",""}}, ": 1\na: x\n:\nb: y\n"));
+ assert (test ({{"","1"},{"a","x"},{"",""},
+ {"","1"},{"b","y"},{"",""},
+ {"","1"},{"c","z"},{"",""},{"",""}},
+ ": 1\na: x\n:\nb: y\n:\nc: z\n"));
+
+ // Invalid name.
+ //
+ assert (fail ({{"","1"},{"#a",""}}));
+ assert (fail ({{"","1"},{"a:b",""}}));
+ assert (fail ({{"","1"},{"a b",""}}));
+ assert (fail ({{"","1"},{"a\tb",""}}));
+ assert (fail ({{"","1"},{"a\n",""}}));
+
+ // Simple value.
+ //
+ assert (test ({{"","1"},{"a",""},{"",""},{"",""}}, ": 1\na:\n"));
+ assert (test ({{"","1"},{"a","x y z"},{"",""},{"",""}}, ": 1\na: x y z\n"));
+
+ // Long simple value (newline escaping).
+ //
+
+ // "Solid" text/hard break.
+ //
+ string l1 ("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+ "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+ "Yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy"
+ "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy"
+ "Zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
+ "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz");
+
+ string e1 ("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+ "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\\\n"
+ "Yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy"
+ "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy\\\n"
+ "Zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
+ "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz");
+
+ // Space too early/hard break.
+ //
+ string l2 ("x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+ "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+ "Yyyyyyyyyyyyyyyyy yyyyyyyyyyyyyyyyyyy"
+ "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy"
+ "Zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz z"
+ "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz");
+
+ string e2 ("x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+ "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\\\n"
+ "Yyyyyyyyyyyyyyyyy yyyyyyyyyyyyyyyyyyy"
+ "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy\\\n"
+ "Zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz z"
+ "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz");
+
+ // Space/soft break.
+ //
+ string l3 ("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+ "xxxxxxxxxxxxxxxxxxx"
+ " Yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy"
+ "yyyyyyyyyyyyyyyyyyyyyyyyyyyyy"
+ " Zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
+ "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz");
+
+ string e3 ("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+ "xxxxxxxxxxxxxxxxxxx\\\n"
+ " Yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy"
+ "yyyyyyyyyyyyyyyyyyyyyyyyyyyyy\\\n"
+ " Zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
+ "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz");
+
+ // Space with a better one/soft break.
+ //
+ string l4 ("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+ "xxxxxxxxx xxxxxxxxx"
+ " Yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy"
+ "yyyyyyyyyyyyyyyyyy yyyyyyyyyy"
+ " Zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
+ "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz");
+
+ string e4 ("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+ "xxxxxxxxx xxxxxxxxx\\\n"
+ " Yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy"
+ "yyyyyyyyyyyyyyyyyy yyyyyyyyyy\\\n"
+ " Zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
+ "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz");
+
+ assert (test ({{"","1"},{"a",l1},{"",""},{"",""}}, ": 1\na: " + e1 + "\n"));
+ assert (test ({{"","1"},{"a",l2},{"",""},{"",""}}, ": 1\na: " + e2 + "\n"));
+ assert (test ({{"","1"},{"a",l3},{"",""},{"",""}}, ": 1\na: " + e3 + "\n"));
+ assert (test ({{"","1"},{"a",l4},{"",""},{"",""}}, ": 1\na: " + e4 + "\n"));
+
+
+ // Multi-line value.
+ //
+ string n ("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
+ assert (test ({{"","1"},{n,"x"},{"",""},{"",""}},
+ ": 1\n" + n + ": \\\nx\n\\\n"));
+ assert (test ({{"","1"},{"a","\n"},{"",""},{"",""}},
+ ": 1\na: \\\n\n\n\\\n"));
+ assert (test ({{"","1"},{"a","\n\n"},{"",""},{"",""}},
+ ": 1\na: \\\n\n\n\n\\\n"));
+ assert (test ({{"","1"},{"a","\nx\n"},{"",""},{"",""}},
+ ": 1\na: \\\n\nx\n\n\\\n"));
+ assert (test ({{"","1"},{"a","x\ny\nz"},{"",""},{"",""}},
+ ": 1\na: \\\nx\ny\nz\n\\\n"));
+ assert (test ({{"","1"},{"a"," x"},{"",""},{"",""}},
+ ": 1\na: \\\n x\n\\\n"));
+ assert (test ({{"","1"},{"a","x "},{"",""},{"",""}},
+ ": 1\na: \\\nx \n\\\n"));
+ assert (test ({{"","1"},{"a"," x "},{"",""},{"",""}},
+ ": 1\na: \\\n x \n\\\n"));
+
+ // Extra three x's are for the leading name part ("a: ") that we
+ // don't have.
+ //
+ assert (test ({{"","1"},{"a","\nxxx" + l1},{"",""},{"",""}},
+ ": 1\na: \\\n\nxxx" + e1 + "\n\\\n"));
+ assert (test ({{"","1"},{"a","\nxxx" + l2},{"",""},{"",""}},
+ ": 1\na: \\\n\nxxx" + e2 + "\n\\\n"));
+ assert (test ({{"","1"},{"a","\nxxx" + l3},{"",""},{"",""}},
+ ": 1\na: \\\n\nxxx" + e3 + "\n\\\n"));
+ assert (test ({{"","1"},{"a","\nxxx" + l4},{"",""},{"",""}},
+ ": 1\na: \\\n\nxxx" + e4 + "\n\\\n"));
+
+ // Backslash escaping (simple and multi-line).
+ //
+ assert (test ({{"","1"},{"a","c:\\"},{"",""},{"",""}},
+ ": 1\na: c:\\\\\n"));
+ assert (test ({{"","1"},{"a","c:\\\nd:\\"},{"",""},{"",""}},
+ ": 1\na: \\\nc:\\\\\nd:\\\\\n\\\n"));
+}
+
+static string
+serialize (const pairs& m)
+{
+ ostringstream os;
+ os.exceptions (istream::failbit | istream::badbit);
+ manifest_serializer s (os, "");
+
+ for (const auto& p: m)
+ {
+ if (p.first != "#")
+ s.next (p.first, p.second);
+ else
+ s.comment (p.second);
+ }
+
+ return os.str ();
+}
+
+static bool
+test (const pairs& m, const string& e)
+{
+ string r (serialize (m));
+
+ if (r != e)
+ {
+ cerr << "actual:" << endl << "'" << r << "'"<< endl
+ << "expect:" << endl << "'" << e << "'"<< endl;
+
+ return false;
+ }
+
+ return true;
+}
+
+static bool
+fail (const pairs& m)
+{
+ try
+ {
+ string r (serialize (m));
+ cerr << "nofail: " << r << endl;
+ return false;
+ }
+ catch (const manifest_serialization& e)
+ {
+ //cerr << e.what () << endl;
+ }
+
+ return true;
+}