LangLoadStrings.c

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#include <stdlib.h>
#include <string.h>
#include "FBLib_ini.h"
#include "libFireBird.h"
 
dword                   LangNrStrings = 0;
dword                   *LangStringPtr = NULL;
char                    *LangStrings   = NULL;
 
INILOCATION LangLoadStrings(char *LangFile, dword NrStrings, int FallbackLang, char *AppName)
{
  TRACEENTER();
 
  dword                 i;
  int                   OSDLan;
  char                  Key[10], s[512], *c;
  dword                 TotalLength;
  char                  *OldBuffer, *OldCommentBuffer;
  dword                 OldBufferSize;
  INILOCATION           LangLocation;
 
  if(LangStringPtr || LangStrings) LangUnloadStrings();
 
  OSDLan = TAP_GetSystemVar(SYSVAR_OsdLan);
  if((NrStrings > 999999) || !iso639_1(OSDLan) || (FallbackLang > LAN_Bulgarian))
  {
    TRACEEXIT();
    return INILOCATION_NotFound;
  }
 
  OldBuffer = INIBuffer;
  OldCommentBuffer = INICommentBuffer;
  OldBufferSize = BufferSize;
  HDD_TAP_PushDir();
  if((LangLocation = INIOpenFile(LangFile, AppName)) < INILOCATION_AtCurrentDir)
  {
    if(LangLocation == INILOCATION_NewFile) INICloseFile();
    HDD_TAP_PopDir();
 
    TRACEEXIT();
    return INILOCATION_NotFound;
  }
 
  //First loop: count the length of all strings
  LangStringPtr = TAP_MemAlloc(NrStrings * sizeof(dword));
  memset(LangStringPtr, 0, NrStrings * sizeof(dword));
  TotalLength = 0;
  for(i = 0; i < NrStrings; i++)
  {
    LangStringPtr[i] = TotalLength;
    TAP_SPrint(Key, "%s_%3.3lu", iso639_1(OSDLan), i);
    INIGetString(Key, s, "", sizeof(s));
 
    //If the string is not available in the current language, use the fallback language
    if(!s[0] && (FallbackLang >= 0))
    {
      TAP_SPrint(Key, "%s_%3.3lu", iso639_1(FallbackLang), i);
      INIGetString(Key, s, "", sizeof(s));
    }
 
    //Convert control characters
    c = s;
    while((c = strchr(c, '\\')))
    {
      if(c[1] == 'r') *c ='\r';
      else if(c[1] == 'n') *c ='\n';
      else continue;
 
      memmove(c + 1, c + 2, strchr(c, '\0') - c - 1);
    }
    TotalLength += (strlen(s) + 1);
  }
 
  //Second loop: Read the strings
  LangStrings = TAP_MemAlloc(TotalLength);
  memset(LangStrings, 0, TotalLength);
  for(i = 0; i < NrStrings; i++)
  {
    TAP_SPrint(Key, "%s_%3.3lu", iso639_1(OSDLan), i);
    INIGetString(Key, s, "", sizeof(s));
 
    //If the string is not available in the current language, use the fallback language
    if(!s[0] && (FallbackLang >= 0))
    {
      TAP_SPrint(Key, "%s_%3.3lu", iso639_1(FallbackLang), i);
      INIGetString(Key, s, "", sizeof(s));
    }
 
    //Convert control characters
    c = s;
    while((c = strchr(c, '\\')))
    {
      if(c[1] == 'r') *c ='\r';
      else if(c[1] == 'n') *c ='\n';
      else continue;
 
      memmove(c + 1, c + 2, strchr(c, '\0') - c - 1);
    }
 
    strcpy(&LangStrings[LangStringPtr[i]], s);
  }
 
  INICloseFile();
 
  INIBuffer = OldBuffer;
  INICommentBuffer = OldCommentBuffer;
  BufferSize = OldBufferSize;
 
  LangNrStrings = NrStrings;
 
  HDD_TAP_PopDir();
 
  TRACEEXIT();
  return LangLocation;
}