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Diffstat (limited to 'butl/manifest-serializer.cxx')
| -rw-r--r-- | butl/manifest-serializer.cxx | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/butl/manifest-serializer.cxx b/butl/manifest-serializer.cxx deleted file mode 100644 index 4255ee1..0000000 --- a/butl/manifest-serializer.cxx +++ /dev/null @@ -1,238 +0,0 @@ -// file : butl/manifest-serializer.cxx -*- C++ -*- -// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd -// license : MIT; see accompanying LICENSE file - -#include <butl/manifest-serializer> - -#include <ostream> -#include <cassert> - -using namespace std; - -namespace butl -{ - 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) - { - } -} |