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Diffstat (limited to 'yaml-cpp/src/scanscalar.cpp')
| -rwxr-xr-x | yaml-cpp/src/scanscalar.cpp | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/yaml-cpp/src/scanscalar.cpp b/yaml-cpp/src/scanscalar.cpp deleted file mode 100755 index 064c0867..00000000 --- a/yaml-cpp/src/scanscalar.cpp +++ /dev/null @@ -1,214 +0,0 @@ -#include "scanscalar.h" -#include "scanner.h" -#include "exp.h" -#include "yaml-cpp/exceptions.h" -#include "token.h" - -namespace YAML -{ - // ScanScalar - // . This is where the scalar magic happens. - // - // . We do the scanning in three phases: - // 1. Scan until newline - // 2. Eat newline - // 3. Scan leading blanks. - // - // . Depending on the parameters given, we store or stop - // and different places in the above flow. - std::string ScanScalar(Stream& INPUT, ScanScalarParams& params) - { - bool foundNonEmptyLine = false; - bool pastOpeningBreak = (params.fold == FOLD_FLOW); - bool emptyLine = false, moreIndented = false; - int foldedNewlineCount = 0; - bool foldedNewlineStartedMoreIndented = false; - std::size_t lastEscapedChar = std::string::npos; - std::string scalar; - params.leadingSpaces = false; - - while(INPUT) { - // ******************************** - // Phase #1: scan until line ending - - std::size_t lastNonWhitespaceChar = scalar.size(); - bool escapedNewline = false; - while(!params.end.Matches(INPUT) && !Exp::Break().Matches(INPUT)) { - if(!INPUT) - break; - - // document indicator? - if(INPUT.column() == 0 && Exp::DocIndicator().Matches(INPUT)) { - if(params.onDocIndicator == BREAK) - break; - else if(params.onDocIndicator == THROW) - throw ParserException(INPUT.mark(), ErrorMsg::DOC_IN_SCALAR); - } - - foundNonEmptyLine = true; - pastOpeningBreak = true; - - // escaped newline? (only if we're escaping on slash) - if(params.escape == '\\' && Exp::EscBreak().Matches(INPUT)) { - // eat escape character and get out (but preserve trailing whitespace!) - INPUT.get(); - lastNonWhitespaceChar = scalar.size(); - lastEscapedChar = scalar.size(); - escapedNewline = true; - break; - } - - // escape this? - if(INPUT.peek() == params.escape) { - scalar += Exp::Escape(INPUT); - lastNonWhitespaceChar = scalar.size(); - lastEscapedChar = scalar.size(); - continue; - } - - // otherwise, just add the damn character - char ch = INPUT.get(); - scalar += ch; - if(ch != ' ' && ch != '\t') - lastNonWhitespaceChar = scalar.size(); - } - - // eof? if we're looking to eat something, then we throw - if(!INPUT) { - if(params.eatEnd) - throw ParserException(INPUT.mark(), ErrorMsg::EOF_IN_SCALAR); - break; - } - - // doc indicator? - if(params.onDocIndicator == BREAK && INPUT.column() == 0 && Exp::DocIndicator().Matches(INPUT)) - break; - - // are we done via character match? - int n = params.end.Match(INPUT); - if(n >= 0) { - if(params.eatEnd) - INPUT.eat(n); - break; - } - - // do we remove trailing whitespace? - if(params.fold == FOLD_FLOW) - scalar.erase(lastNonWhitespaceChar); - - // ******************************** - // Phase #2: eat line ending - n = Exp::Break().Match(INPUT); - INPUT.eat(n); - - // ******************************** - // Phase #3: scan initial spaces - - // first the required indentation - while(INPUT.peek() == ' ' && (INPUT.column() < params.indent || (params.detectIndent && !foundNonEmptyLine))) - INPUT.eat(1); - - // update indent if we're auto-detecting - if(params.detectIndent && !foundNonEmptyLine) - params.indent = std::max(params.indent, INPUT.column()); - - // and then the rest of the whitespace - while(Exp::Blank().Matches(INPUT)) { - // we check for tabs that masquerade as indentation - if(INPUT.peek() == '\t'&& INPUT.column() < params.indent && params.onTabInIndentation == THROW) - throw ParserException(INPUT.mark(), ErrorMsg::TAB_IN_INDENTATION); - - if(!params.eatLeadingWhitespace) - break; - - INPUT.eat(1); - } - - // was this an empty line? - bool nextEmptyLine = Exp::Break().Matches(INPUT); - bool nextMoreIndented = Exp::Blank().Matches(INPUT); - if(params.fold == FOLD_BLOCK && foldedNewlineCount == 0 && nextEmptyLine) - foldedNewlineStartedMoreIndented = moreIndented; - - // for block scalars, we always start with a newline, so we should ignore it (not fold or keep) - if(pastOpeningBreak) { - switch(params.fold) { - case DONT_FOLD: - scalar += "\n"; - break; - case FOLD_BLOCK: - if(!emptyLine && !nextEmptyLine && !moreIndented && !nextMoreIndented && INPUT.column() >= params.indent) - scalar += " "; - else if(nextEmptyLine) - foldedNewlineCount++; - else - scalar += "\n"; - - if(!nextEmptyLine && foldedNewlineCount > 0) { - scalar += std::string(foldedNewlineCount - 1, '\n'); - if(foldedNewlineStartedMoreIndented || nextMoreIndented | !foundNonEmptyLine) - scalar += "\n"; - foldedNewlineCount = 0; - } - break; - case FOLD_FLOW: - if(nextEmptyLine) - scalar += "\n"; - else if(!emptyLine && !nextEmptyLine && !escapedNewline) - scalar += " "; - break; - } - } - - emptyLine = nextEmptyLine; - moreIndented = nextMoreIndented; - pastOpeningBreak = true; - - // are we done via indentation? - if(!emptyLine && INPUT.column() < params.indent) { - params.leadingSpaces = true; - break; - } - } - - // post-processing - if(params.trimTrailingSpaces) { - std::size_t pos = scalar.find_last_not_of(' '); - if(lastEscapedChar != std::string::npos) { - if(pos < lastEscapedChar || pos == std::string::npos) - pos = lastEscapedChar; - } - if(pos < scalar.size()) - scalar.erase(pos + 1); - } - - switch(params.chomp) { - case CLIP: { - std::size_t pos = scalar.find_last_not_of('\n'); - if(lastEscapedChar != std::string::npos) { - if(pos < lastEscapedChar || pos == std::string::npos) - pos = lastEscapedChar; - } - if(pos == std::string::npos) - scalar.erase(); - else if(pos + 1 < scalar.size()) - scalar.erase(pos + 2); - } break; - case STRIP: { - std::size_t pos = scalar.find_last_not_of('\n'); - if(lastEscapedChar != std::string::npos) { - if(pos < lastEscapedChar || pos == std::string::npos) - pos = lastEscapedChar; - } - if(pos == std::string::npos) - scalar.erase(); - else if(pos < scalar.size()) - scalar.erase(pos + 1); - } break; - default: - break; - } - - return scalar; - } -} |