rlJSON Class Reference

#include <rljson.h>

Public Member Functions
	rlJSON ()
virtual	~rlJSON ()
int	initRecord (rlJSONrecord *record)
int	interpret (const char *line, rlJSONrecord *record)
int	print (FILE *fout, rlJSONrecord *record, const char *indent="")

Detailed Description

class for a simple JSON

Definition at line 47 of file rljson.h.

Constructor & Destructor Documentation

rlJSON()

rlJSON::rlJSON

(

)

construct the class

Definition at line 18 of file rljson.cpp.

{
}

~rlJSON()

rlJSON::~rlJSON ( )

virtual

destruct the class

Definition at line 22 of file rljson.cpp.

{
}

Member Function Documentation

initRecord()

int rlJSON::initRecord

(

rlJSONrecord *

record

)

init a rlJSONrecord

Definition at line 26 of file rljson.cpp.

{
  record->startsWithText = 0;         // "text"
  record->startsWithOpenBracket = 0;  // {
  record->startsWithCloseBracket = 0; // }
  record->startsWithEndArray = 0;     // ]
  record->text.setText("");           // white space in front of the tag name is ignored
  record->optColon = 0;               // a colon must follow when text is a tag
  record->optOpenBracket = 0;         // a openBracket { might follow
  record->optBeginArray = 0;          // a beginArray [ might follow
  record->optParamType = 0;           // 0=default=text 1=integer 2=float
  record->param.setText("");          // the parameter in text form
  record->intParam = 0;               // 0   if there is no integer number
  record->floatParam = 0.0f;          // 0.0 if there is no floating point number
  record->optComma = 0;               // tells us that more elements follow
  return 0;
}

interpret()

int rlJSON::interpret	(	const char *	line,
		rlJSONrecord *	record
	)

interpret a JSON formatted line of text

Definition at line 44 of file rljson.cpp.

{
  if(line == NULL) return -1;
  if(record == NULL) return -1;
  initRecord(record);

  int i=0;
  while(line[i] == ' ') i++;
  if     (line[i] == '"') record->startsWithText = 1;
  else if(line[i] == '{') record->startsWithOpenBracket = 1;
  else if(line[i] == '}') record->startsWithCloseBracket = 1;
  else if(line[i] == ']') record->startsWithEndArray = 1;

  if(record->startsWithText)
  {
    i++;
    rlString text(&line[i]);
    char *start = text.text();
    char *end = strchr(start,'"');
    if(end != NULL)
    {
      *end = '\0';
      record->text = start;
      end++;
      start = end;
      start = strchr(start,'"');
      if(start != NULL)
      {
        start++;
        end = strchr(start,'"');
        if(end != NULL)
        {
          *end = '\0';
          record->param = start;
        }
      }
    }  
  }  
  else if(record->startsWithOpenBracket == 1)
  {
  }
  else if(record->startsWithCloseBracket == 1)
  {
  }
  else if(record->startsWithEndArray == 1)
  {
  }
  else // this must be either an empty line or an integer or float parameter
  {
    if(strchr(line,'.') != NULL)
    { 
      record->optParamType = 2; // float
      record->param = &line[i];
      char *cptr = record->param.text();
      cptr = strchr(cptr,',');
      if(cptr != NULL) *cptr = '\0';
    }
    else
    {
     if(line[i] >= '0' && line[i] <= '9') record->optParamType = 1; // integer
     else if(line[i] == '-')              record->optParamType = 1; // integer
     else if(line[i] == '+')              record->optParamType = 1; // integer
     if(record->optParamType == 1) record->param = &line[i];
     char *cptr = record->param.text();
     cptr = strchr(cptr,',');
     if(cptr != NULL) *cptr = '\0';
    }
  }

  if(strchr(line,':') != NULL) record->optColon = 1;       // a colon must follow when text is a tag
  if(strchr(line,'{') != NULL) record->optOpenBracket = 1; // a openBracket { might follow
  if(strchr(line,'[') != NULL) record->optBeginArray = 1;  // a beginArray [ might follow
  if(strchr(line,',') != NULL) record->optComma = 1;       // tells us that more elements follow

  return 0;
}

print()

int rlJSON::print	(	FILE *	fout,
		rlJSONrecord *	record,
		const char *	indent = ""
	)

print a JSON formatted line of text

Definition at line 121 of file rljson.cpp.

{
  if(record == NULL) return -1;
  if(indent != NULL) printf("%s",indent);
  if(record->startsWithText)
  {
    fprintf(fout,"\"%s\"",record->text.text());
    if(record->optOpenBracket == 0 && record->optBeginArray == 0)
    {
      if(record->optColon == 1)
      {
        fprintf(fout,": ");
        if(record->optParamType == 0) fprintf(fout,"\"%s\"",record->param.text());
        else                          fprintf(fout,"%s",record->param.text());
        if(record->optComma == 1) fprintf(fout,",");
        fprintf(fout,"\n");
      }
      if(record->optColon == 0)
      {
        if(record->optComma == 1) fprintf(fout,",");
        fprintf(fout,"\n");
      }
    }  
    else if(record->optOpenBracket == 1)
    {
      if(record->optColon == 1) fprintf(fout,":");
      fprintf(fout," ");
      if(record->optParamType == 0) fprintf(fout,"\"%s\"",record->param.text());
      else                          fprintf(fout,"%s",record->param.text());
      fprintf(fout," {");
      fprintf(fout,"\n");
    }
    else if(record->optBeginArray == 1)
    {
      if(record->optColon == 1) fprintf(fout,":");
      fprintf(fout," [\n");
    }
  }  
  else if(record->startsWithOpenBracket == 1)
  {
    fprintf(fout,"{"); 
    fprintf(fout,"\n");
  }
  else if(record->startsWithCloseBracket == 1)
  {
    fprintf(fout,"}"); 
    if(record->optComma == 1) fprintf(fout,",");
    fprintf(fout,"\n");
  }
  else if(record->startsWithEndArray == 1)
  {
    fprintf(fout,"]"); 
    if(record->optComma == 1) fprintf(fout,",");
    fprintf(fout,"\n");
  }
  return 0;
}

---

The documentation for this class was generated from the following files:

• rljson.h
• rljson.cpp