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      1 // Common/TextConfig.cpp
      2 
      3 #include "StdAfx.h"
      4 
      5 #include "TextConfig.h"
      6 #include "UTFConvert.h"
      7 
      8 static inline bool IsDelimitChar(char c)
      9 {
     10   return (c == ' ' || c == 0x0A || c == 0x0D || c == '\0' || c == '\t');
     11 }
     12 
     13 static AString GetIDString(const char *s, unsigned &finishPos)
     14 {
     15   AString result;
     16   for (finishPos = 0; ; finishPos++)
     17   {
     18     char c = s[finishPos];
     19     if (IsDelimitChar(c) || c == '=')
     20       break;
     21     result += c;
     22   }
     23   return result;
     24 }
     25 
     26 static bool WaitNextLine(const AString &s, unsigned &pos)
     27 {
     28   for (; pos < s.Len(); pos++)
     29     if (s[pos] == 0x0A)
     30       return true;
     31   return false;
     32 }
     33 
     34 static bool SkipSpaces(const AString &s, unsigned &pos)
     35 {
     36   for (; pos < s.Len(); pos++)
     37   {
     38     char c = s[pos];
     39     if (!IsDelimitChar(c))
     40     {
     41       if (c != ';')
     42         return true;
     43       if (!WaitNextLine(s, pos))
     44         return false;
     45     }
     46   }
     47   return false;
     48 }
     49 
     50 bool GetTextConfig(const AString &s, CObjectVector<CTextConfigPair> &pairs)
     51 {
     52   pairs.Clear();
     53   unsigned pos = 0;
     54 
     55   /////////////////////
     56   // read strings
     57 
     58   for (;;)
     59   {
     60     if (!SkipSpaces(s, pos))
     61       break;
     62     CTextConfigPair pair;
     63     unsigned finishPos;
     64     AString temp = GetIDString(((const char *)s) + pos, finishPos);
     65     if (!ConvertUTF8ToUnicode(temp, pair.ID))
     66       return false;
     67     if (finishPos == 0)
     68       return false;
     69     pos += finishPos;
     70     if (!SkipSpaces(s, pos))
     71       return false;
     72     if (s[pos] != '=')
     73       return false;
     74     pos++;
     75     if (!SkipSpaces(s, pos))
     76       return false;
     77     if (s[pos] != '\"')
     78       return false;
     79     pos++;
     80     AString message;
     81     for (;;)
     82     {
     83       if (pos >= s.Len())
     84         return false;
     85       char c = s[pos++];
     86       if (c == '\"')
     87         break;
     88       if (c == '\\')
     89       {
     90         char c = s[pos++];
     91         switch(c)
     92         {
     93           case 'n': message += '\n'; break;
     94           case 't': message += '\t'; break;
     95           case '\\': message += '\\'; break;
     96           case '\"': message += '\"'; break;
     97           default: message += '\\'; message += c; break;
     98         }
     99       }
    100       else
    101         message += c;
    102     }
    103     if (!ConvertUTF8ToUnicode(message, pair.String))
    104       return false;
    105     pairs.Add(pair);
    106   }
    107   return true;
    108 }
    109 
    110 int FindTextConfigItem(const CObjectVector<CTextConfigPair> &pairs, const UString &id) throw()
    111 {
    112   FOR_VECTOR (i, pairs)
    113     if (pairs[i].ID == id)
    114       return i;
    115   return -1;
    116 }
    117 
    118 UString GetTextConfigValue(const CObjectVector<CTextConfigPair> &pairs, const UString &id)
    119 {
    120   int index = FindTextConfigItem(pairs, id);
    121   if (index < 0)
    122     return UString();
    123   return pairs[index].String;
    124 }
    125