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NMEStyle.c

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00001 
00007 /* License: new BSD license (see header file) */
00008 
00009 #include "NMEStyle.h"
00010 
00011 NMEOutputFormat const NMEOutputFormatBasicText =
00012 {
00013     " ",    // space
00014     0,  // indentSpaces
00015     10, // defFontSize
00016     '%',    // ctrlChar
00017     "", "", // doc
00018     4,  // highest heading level
00019     "%%{i>0}%{i}. %%", "\n",    // heading
00020     "", "\n",   // par
00021     "\n",   // line break
00022     "", "", // pre
00023     "", "\n",   // pre line
00024     "", "", // UL
00025     "- ", "\n", // UL line
00026     "", "", // OL
00027     "%{i}. ", "\n", // OL line
00028     "", "", // DL
00029     "", " ",    // DT
00030     NULL,   // emptyDT
00031     "", "\n",   // DD
00032     "", "", // indented section
00033     "", "\n",   // indented par
00034     "", "", // table
00035     "", "\n",   // table row
00036     "", "\t",   // table header cell
00037     "", "\t",   // table normal cell
00038     "\n",   // hr
00039     "", "", // bold
00040     "", "", // italic
00041     "", "", // underline
00042     "", "", // superscript
00043     "", "", // subscript
00044     "", "", // monospace
00045     "", "", NULL, FALSE,    // link
00046     "", "", NULL, FALSE, FALSE, // image
00047     NULL,   // interwikis
00048     NULL, NULL, // encodeURLFun
00049     NULL, NULL, // char encoder
00050     NULL, NULL, // char pre encoder
00051     -1, NULL, NULL, // no wordwrap
00052     NULL, NULL, NULL, NULL, // process hooks
00053     NULL,   // plugins
00054     NULL    // autoconverts
00055 };
00056 
00057 void NMEStyleInit(NMEStyleTable *table, NMEInt size,
00058         NMEBoolean convertOffsetsToUnicode)
00059 {
00060     table->tableSize = (size - (sizeof(NMEStyleTable) - sizeof(NMEStyleSpan)))
00061             / sizeof(NMEStyleSpan);
00062     table->n = 0;
00063     table->convertOffsetsToUnicode = convertOffsetsToUnicode;
00064     table->depth = 0;
00065 }
00066 
00072 static NMEStyleEnum decodeStyle(NMEConstText markup, NMEInt level)
00073 {
00074     if (level == kNMEHookLevelSpan) // span
00075         switch (markup[0])
00076         {
00077             case '*':
00078                 return kNMEStyleCharBold;
00079             case '/':
00080                 return kNMEStyleCharItalic;
00081             case '_':
00082                 return kNMEStyleCharUnderline;
00083             case '^':
00084                 return kNMEStyleCharSuperscript;
00085             case ',':
00086                 return kNMEStyleCharSubscript;
00087             case '#':
00088                 return kNMEStyleCharMonospace;
00089             case '[':
00090                 return kNMEStyleCharLink;
00091             case '{':
00092                 return kNMEStyleCharImage;
00093             default:
00094                 return kNMEStyleCharPlain;
00095         }
00096     else    // par
00097         switch (markup[0])
00098         {
00099             case '{':
00100                 return kNMEStyleCharMonospace;
00101             case '=':
00102                 return kNMEStyleParHeading;
00103             case '*':
00104                 return kNMEStyleParUL;
00105             case '#':
00106                 return kNMEStyleParOL;
00107             case ';':
00108                 return markup[1] == ':' ? kNMEStyleParDT : kNMEStyleParDL;
00109             case ':':
00110                 return kNMEStyleParIndentedPar;
00111             case '|':
00112                 return kNMEStyleParTable;
00113             default:
00114                 return kNMEStyleParPlain;
00115         }
00116 }
00117 
00118 NMEErr NMEStyleSpanHook(NMEInt level,
00119         NMEInt item,
00120         NMEBoolean enter,
00121         NMEConstText markup,
00122         NMEInt srcIndex,
00123         NMEContext *context,
00124         void *data)
00125 {
00126     NMEStyleTable *table = (NMEStyleTable *)data;
00127     NMEStyleEnum style = decodeStyle(markup, level);
00128     NMEStyleEnum substyle = kNMEStyleCharPlain;
00129     
00130     if (style == kNMEStyleCharPlain)
00131         return kNMEErrOk;
00132     else if (style == kNMEStyleParDL && markup[1] == '\0')
00133         substyle = kNMEStyleCharDT;
00134     else if (style == kNMEStyleParTable && markup[1] == '=')
00135         substyle = kNMEStyleCharTH;
00136     
00137     if (enter)
00138     {
00139         if (table->n >= table->tableSize)
00140             return kNMEErrStyleTableTooSmall;
00141         table->span[table->n].begin
00142                 = table->convertOffsetsToUnicode
00143                         ? NMECurrentOutputIndexUCS16(context)
00144                         : NMECurrentOutputIndex(context);
00145         table->span[table->n].style = style;
00146         table->span[table->n].level = level;
00147         NMECurrentLink(context,
00148                 &table->span[table->n].linkOffset, &table->span[table->n].linkLength);
00149         table->spanStack[table->depth++] = table->n;
00150         table->n++;
00151         if (substyle != kNMEStyleCharPlain)
00152         {
00153             if (table->n >= table->tableSize)
00154                 return kNMEErrStyleTableTooSmall;
00155             table->span[table->n] = table->span[table->n - 1];
00156             table->span[table->n].style = substyle;
00157             table->spanStack[table->depth++] = table->n;
00158             table->n++;
00159         }
00160     }
00161     else
00162     {
00163         NMEInt end = table->convertOffsetsToUnicode
00164                 ? NMECurrentOutputIndexUCS16(context)
00165                 : NMECurrentOutputIndex(context);
00166         
00167         if (table->depth + (substyle != kNMEStyleCharPlain ? 1 : 0) <= 0)
00168             return kNMEErrInternal;
00169         if (substyle != kNMEStyleCharPlain)
00170             table->span[table->spanStack[--table->depth]].end = end;
00171         table->span[table->spanStack[--table->depth]].end = end;
00172     }
00173     
00174     return kNMEErrOk;
00175 }