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Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-1.9.1/src/Message.cpp')
-rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-1.9.1/src/Message.cpp | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.9.1/src/Message.cpp b/Build/source/texk/dvisvgm/dvisvgm-1.9.1/src/Message.cpp new file mode 100644 index 00000000000..17b9b526f9e --- /dev/null +++ b/Build/source/texk/dvisvgm/dvisvgm-1.9.1/src/Message.cpp @@ -0,0 +1,274 @@ +/************************************************************************* +** Message.cpp ** +** ** +** This file is part of dvisvgm -- the DVI to SVG converter ** +** Copyright (C) 2005-2015 Martin Gieseking <martin.gieseking@uos.de> ** +** ** +** This program is free software; you can redistribute it and/or ** +** modify it under the terms of the GNU General Public License as ** +** published by the Free Software Foundation; either version 3 of ** +** the License, or (at your option) any later version. ** +** ** +** This program is distributed in the hope that it will be useful, but ** +** WITHOUT ANY WARRANTY; without even the implied warranty of ** +** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ** +** GNU General Public License for more details. ** +** ** +** You should have received a copy of the GNU General Public License ** +** along with this program; if not, see <http://www.gnu.org/licenses/>. ** +*************************************************************************/ + +#include <config.h> +#include <cstdarg> +#include <cstdlib> +#include <cstring> +#include <iostream> +#include <map> +#include "Message.h" +#include "Terminal.h" + +using namespace std; + +MessageStream::MessageStream () : _os(0), _nl(false), _col(1), _indent(0) { +} + + +MessageStream::MessageStream (std::ostream &os) + : _os(&os), _nl(true), _col(1), _indent(0) +{ + Terminal::init(os); +} + + +MessageStream::~MessageStream () { + if (_os && Message::COLORIZE) + Terminal::finish(*_os); +} + + +void MessageStream::putChar (const char c, ostream &os) { + switch (c) { + case '\r': + os << '\r'; + _nl = true; + _col = 1; + return; + case '\n': + if (!_nl) { + _col = 1; + _nl = true; + os << '\n'; + } + return; + default: + if (_nl) { + os << string(_indent, ' '); + _col += _indent; + } + else { + const int cols = Terminal::columns(); + if (cols > 0 && _col >= cols) { +#ifndef __WIN32__ + // move cursor to next line explicitly (not necessary in Windows/DOS terminal) + os << '\n'; +#endif + os << string(_indent, ' '); + _col = _indent+1; + } + else + _col++; + } + _nl = false; + if (!_nl || c != '\n') + os << c; + } +} + + +MessageStream& MessageStream::operator << (const char *str) { + if (_os && str) { + const char *first = str; + while (*first) { + const char *last = strchr(first, '\n'); + if (!last) + last = first+strlen(first)-1; +#ifndef __WIN32__ + // move cursor to next line explicitly (not necessary in Windows/DOS terminal) + const int cols = Terminal::columns(); + int len = last-first+1; + if (cols > 0 && _col+len > cols && _indent+len <= cols) + putChar('\n', *_os); +#endif + while (first <= last) + putChar(*first++, *_os); + first = last+1; + } + } + return *this; +} + + +MessageStream& MessageStream::operator << (const char &c) { + if (_os) + putChar(c, *_os); + return *this; +} + + +void MessageStream::indent (bool reset) { + if (reset) + _indent = 0; + _indent += 2; +} + + +void MessageStream::outdent (bool all) { + if (all) + _indent = 0; + else if (_indent > 0) + _indent -= 2; +} + + +void MessageStream::clearline () { + if (_os) { + int cols = Terminal::columns(); + *_os << '\r' << string(cols ? cols-1 : 79, ' ') << '\r'; + _nl = true; + _col = 1; + } +} + +static MessageStream nullStream; +static MessageStream messageStream(cerr); + + +////////////////////////////// + +// maximal verbosity +int Message::LEVEL = Message::MESSAGES | Message::WARNINGS | Message::ERRORS; +bool Message::COLORIZE = false; +bool Message::_initialized = false; +Message::Color Message::_classColors[9]; + + +/** Returns the stream for usual messages. */ +MessageStream& Message::mstream (bool prefix, MessageClass mclass) { + init(); + MessageStream *ms = (LEVEL & MESSAGES) ? &messageStream : &nullStream; + if (COLORIZE && ms && ms->os()) { + Terminal::fgcolor(_classColors[mclass].foreground, *ms->os()); + Terminal::bgcolor(_classColors[mclass].background, *ms->os()); + } + if (prefix) + *ms << "\nMESSAGE: "; + return *ms; +} + + +/** Returns the stream for warning messages. */ +MessageStream& Message::wstream (bool prefix) { + init(); + MessageStream *ms = (LEVEL & WARNINGS) ? &messageStream : &nullStream; + if (COLORIZE && ms && ms->os()) { + Terminal::fgcolor(_classColors[MC_WARNING].foreground, *ms->os()); + Terminal::bgcolor(_classColors[MC_WARNING].background, *ms->os()); + } + if (prefix) + *ms << "\nWARNING: "; + return *ms; +} + + +/** Returns the stream for error messages. */ +MessageStream& Message::estream (bool prefix) { + init(); + MessageStream *ms = (LEVEL & ERRORS) ? &messageStream : &nullStream; + if (COLORIZE && ms && ms->os()) { + Terminal::fgcolor(_classColors[MC_ERROR].foreground, *ms->os()); + Terminal::bgcolor(_classColors[MC_ERROR].background, *ms->os()); + } + if (prefix) + *ms << "\nERROR: "; + return *ms; +} + + +static bool colorchar2int (char colorchar, int *val) { + colorchar = tolower(colorchar); + if (colorchar >= '0' && colorchar <= '9') + *val = int(colorchar-'0'); + else if (colorchar >= 'a' && colorchar <= 'f') + *val = int(colorchar-'a'+10); + else if (colorchar == '*') + *val = -1; + else + return false; + return true; +} + + +/** Initializes the Message class. Sets the colors for each message set. + * The colors can be changed via environment variable DVISVGM_COLORS. Its + * value must be a sequence of color entries of the form gg:BF where the + * two-letter ID gg specifies a message set, B the hex digit of the + * background, and F the hex digit of the foreground/text color. + * Color codes: + * - 1: red, 2: green, 4: blue + * - 0-7: dark colors + * - 8-F: light colors + * - *: default color + * Example: num:01 sets page number messages to red on black background */ +void Message::init () { + if (_initialized || !Message::COLORIZE) + return; + + // set default message colors + _classColors[MC_ERROR] = Color(Terminal::RED, true); + _classColors[MC_WARNING] = Color(Terminal::YELLOW); + _classColors[MC_PAGE_NUMBER] = Color(Terminal::BLUE, true); + _classColors[MC_PAGE_SIZE] = Color(Terminal::MAGENTA); + _classColors[MC_PAGE_WRITTEN] = Color(Terminal::GREEN); + _classColors[MC_STATE] = Color(Terminal::CYAN); + _classColors[MC_TRACING] = Color(Terminal::BLUE); + _classColors[MC_PROGRESS] = Color(Terminal::MAGENTA); + + if (const char *color_str = getenv("DVISVGM_COLORS")) { + map<string, MessageClass> classes; + classes["er"] = MC_ERROR; + classes["wn"] = MC_WARNING; + classes["pn"] = MC_PAGE_NUMBER; + classes["ps"] = MC_PAGE_SIZE; + classes["fw"] = MC_PAGE_WRITTEN; + classes["sm"] = MC_STATE; + classes["tr"] = MC_TRACING; + classes["pi"] = MC_PROGRESS; + const char *p=color_str; + + // skip leading whitespace + while (isspace(*p)) + ++p; + + // iterate over color assignments + while (strlen(p) >= 5) { + map<string, MessageClass>::iterator it = classes.find(string(p, 2)); + if (it != classes.end() && p[2] == '=') { + int bgcolor, fgcolor; + if (colorchar2int(p[3], &bgcolor) && colorchar2int(p[4], &fgcolor)) { + _classColors[it->second].background = bgcolor; + _classColors[it->second].foreground = fgcolor; + } + } + p += 5; + + // skip trailing characters in a malformed entry + while (!isspace(*p) && *p != ':' && *p != ';') + ++p; + // skip separation characters + while (isspace(*p) || *p == ':' || *p == ';') + ++p; + } + } + _initialized = true; +} + |