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Diffstat (limited to 'dep/g3dlite/G3D/TextOutput.h')
| -rw-r--r-- | dep/g3dlite/G3D/TextOutput.h | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/dep/g3dlite/G3D/TextOutput.h b/dep/g3dlite/G3D/TextOutput.h new file mode 100644 index 00000000000..4c22b7d5653 --- /dev/null +++ b/dep/g3dlite/G3D/TextOutput.h @@ -0,0 +1,249 @@ +/** + @file TextOutput.h + + @maintainer Morgan McGuire, http://graphics.cs.williams.edu + @created 2004-06-21 + @edited 2006-10-24 + + Copyright 2000-2007, Morgan McGuire. + All rights reserved. + */ + +#ifndef G3D_TEXTOUTPUT_H +#define G3D_TEXTOUTPUT_H + +#include "G3D/platform.h" +#include "G3D/Array.h" +#include <string> + +namespace G3D { + +/** + Convenient formatting of ASCII text written to a file. + <P> + + The core writeString, writeNumber, and writeSymbol methods map to TextInput's + methods. Number and Symbol each print an additional space that is used to + separate adjacent tokens. + + TextOutput::printf allows arbitrary text to be conveniently dumped + en-masse. Use [de]serialize(bool, TextOutput) and other overloads to read/write + primitive types in a standardized manner and + + <P> + When a word-wrap line break occurs, all whitespace between words is replaced + with a single newline (the newline may be two characters-- see + G3D::TextOutput::Options::NewlineStyle). Word wrapping occurs against + the number of columns specified by Options::numColumns, <I>minus</I> the current + indent level. + + Indenting adds the specified number of spaces immediately after a newline. + If a newline was followed by spaces in the original string, these are added + to the indent spaces. Indenting <B>will</B> indent blank lines and will leave + indents after the last newline of a file (if the indent level is non-zero at the end). + + <P><B>Serialization/Marshalling</B> + <DT>Text serialization is accomplished using TextOutput by defining the pair of + methods: + + <PRE> + void serialize(TextOutput& to) const; + void deserialize(TextInput& ti); + </PRE> + + See also G3D::TextInput. + + <P> + <B>BETA API</B> + <DT>This API is subject to change in future versions. + */ +class TextOutput { +public: + + class Settings { + public: + /** + WRAP_NONE Word wrapping is disabled + WRAP_WITHOUT_BREAKING Word-wrap, but don't break continuous lines that + are longer than numColumns (default) + WRAP_ALWAYS Wrap even if it means breaking a continuous line or + a quoted string. + + Word wrapping is only allowed at whitespaces ('\\n', '\\r', '\\t', ' '); it + will not occur after commas, punctuation, minus signs, or any other characters + */ + enum WordWrapMode {WRAP_NONE, WRAP_WITHOUT_BREAKING, WRAP_ALWAYS}; + + /** Defaults to WRAP_WITHOUT_BREAKING */ + WordWrapMode wordWrap; + + /** Is word-wrapping allowed to insert newlines inside double quotes? + Default: false */ + bool allowWordWrapInsideDoubleQuotes; + + /** Number of columns for word wrapping. Default: 8 */ + int numColumns; + + /** Number of spaces in each indent. Default: 4 */ + int spacesPerIndent; + + /** Style of newline used by word wrapping and by (optional) conversion. + default: Windows: NEWLINE_WINDOWS, Linux, OS X: NEWLINE_UNIX. + */ + enum NewlineStyle {NEWLINE_WINDOWS, NEWLINE_UNIX}; + + NewlineStyle newlineStyle; + + /** If true, all newlines are converted to NewlineStyle regardless of + how they start out. Default: true. */ + bool convertNewlines; + + /** Used by writeBoolean */ + std::string trueSymbol; + + /** Used by writeBoolean */ + std::string falseSymbol; + + Settings() : + wordWrap(WRAP_WITHOUT_BREAKING), + allowWordWrapInsideDoubleQuotes(false), + numColumns(80), + spacesPerIndent(4), + convertNewlines(true), + trueSymbol("true"), + falseSymbol("false") { + #ifdef G3D_WIN32 + newlineStyle = NEWLINE_WINDOWS; + #else + newlineStyle = NEWLINE_UNIX; + #endif + } + }; + +private: + + /** Used by indentAndAppend to tell when we are writing the + first character of a new line. + + So that push/popIndent work correctly, we cannot indent + immediately after writing a newline. Instead we must + indent on writing the first character <B>after</B> that + newline. + */ + bool startingNewLine; + + /** Number of characters at the end of the buffer since the last newline */ + int currentColumn; + + /** True if we have seen an open " and no close ".*/ + bool inDQuote; + + /** Empty if there is none */ + std::string filename; + + Array<char> data; + + Settings option; + + /** Number of indents to prepend before each line. Always set using setIndentLevel.*/ + int indentLevel; + + void setIndentLevel(int i); + + /** Actual number of spaces to indent. */ + int indentSpaces; + + /** the newline character(s) */ + std::string newline; + + void setOptions(const Settings& _opt); + + /** Converts to the desired newlines. Called from vprintf */ + void convertNewlines(const std::string& in, std::string& out); + + /** Called from vprintf */ + void wordWrapIndentAppend(const std::string& str); + + /** Appends the character to data, indenting whenever a newline is encountered. + Called from wordWrapIndentAppend */ + void indentAppend(char c); + +public: + + explicit TextOutput(const std::string& filename, const Settings& options = Settings()); + + /** Constructs a text output that can later be commited to a string instead of a file.*/ + explicit TextOutput(const Settings& options = Settings()); + + /** Commit to the filename specified on the constructor. + <B>Not</B> called from the destructor; you must call + it yourself. + @param flush If true (default) the file is ready for reading when the method returns, otherwise + the method returns immediately and writes the file in the background.*/ + void commit(bool flush = true); + + /** Commits to this string */ + void commitString(std::string& string); + + /** Increase indent level by 1 */ + void pushIndent(); + + void popIndent(); + + /** Produces a new string that contains the output */ + std::string commitString(); + + /** Writes a quoted string. Special characters in the string (e.g., \\, \\t, \\n) are escaped so that + TextInput will produce the identical string on reading.*/ + void writeString(const std::string& string); + + void writeBoolean(bool b); + + void writeNumber(double n); + + void writeNumber(int n); + + void writeNewline(); + void writeNewlines(int numLines); + + /** The symbol is written without quotes. Symbols are required to begin with a + letter or underscore and contain only letters, underscores, and numbers + or be a C++ symbol (e.g. "{", "(", "++", etc.) + so that they may be properly parsed by TextInput::readSymbol. Symbols are + printed with a trailing space.*/ + void writeSymbol(const std::string& string); + + /** Convenient idiom for writing multiple symbols in a row, e.g. + writeSymbols("name", "="); The empty symbols are not written. + */ + void writeSymbols( + const std::string& a, + const std::string& b = "", + const std::string& c = "", + const std::string& d = "", + const std::string& e = "", + const std::string& f = ""); + + /** Normal printf conventions. Note that the output will be reformatted + for word-wrapping and newlines */ + void __cdecl printf(const char* fmt, ...) + G3D_CHECK_PRINTF_METHOD_ARGS; + + // Can't pass by reference because that confuses va_start + void __cdecl printf(const std::string fmt, ...); + void __cdecl vprintf(const char* fmt, va_list argPtr) + G3D_CHECK_VPRINTF_METHOD_ARGS; +}; + +// Primitive serializers +void serialize(const bool& b, TextOutput& to); +void serialize(const int& b, TextOutput& to); +void serialize(const uint8& b, TextOutput& to); +void serialize(const double& b, TextOutput& to); +void serialize(const float& b, TextOutput& to); +void serialize(const std::string& b, TextOutput& to); +void serialize(const char* b, TextOutput& to); + +} + +#endif |