rlIniFile Class Reference

#include <rlinifile.h>

Collaboration diagram for rlIniFile:

[legend]

List of all members.

Public Member Functions
	rlIniFile ()
virtual	~rlIniFile ()
int	read (const char *filename)
int	write (const char *filename)
const char *	text (const char *section, const char *name)
void	setText (const char *section, const char *name, const char *text)
int	printf (const char *section, const char *name, const char *format,...)
void	remove (const char *section)
void	remove (const char *section, const char *name)
const char *	firstSection ()
const char *	nextSection ()
const char *	firstName (const char *section)
const char *	nextName (const char *section)
Private Types
typedef struct rlIniFile::_rlSectionName_	rlSectionName
typedef struct rlIniFile::_rlSection_	rlSection
Private Member Functions
void	copyIdentifier (char *buf, const char *line)
void	copyName (char *buf, const char *line)
void	copyParam (char *buf, const char *line)
void	deleteSectionNames (rlSection *section)
Private Attributes
rlSection *	_firstSection
int	currentSection
int	currentName
Classes
struct	_rlSection_
struct	_rlSectionName_

---

Detailed Description

class for INI files as known from Windows.

Definition at line 24 of file rlinifile.h.

---

Member Typedef Documentation

typedef struct rlIniFile::_rlSectionName_ rlIniFile::rlSectionName [private]

typedef struct rlIniFile::_rlSection_ rlIniFile::rlSection [private]

---

Constructor & Destructor Documentation

rlIniFile::rlIniFile

(

)

Definition at line 29 of file rlinifile.cpp.

{
  _firstSection = new rlSection;      // first section holds names with section name = null_string
  _firstSection->nextSection = NULL;
  _firstSection->firstName = NULL;
  _firstSection->name = new char[1];
  _firstSection->name[0] = '\0';
  currentSection = currentName = -1;
}

rlIniFile::~rlIniFile

(

)

[virtual]

Definition at line 39 of file rlinifile.cpp.

{
  rlSection *section, *last_section;

  section = _firstSection;
  while(section != NULL)
  {
    deleteSectionNames(section);
    last_section = section;
    section = section->nextSection;
    delete last_section;
  }
}

---

Member Function Documentation

int rlIniFile::read

(

const char *

filename

)

Definition at line 112 of file rlinifile.cpp.

{
  FILE *fp;
  int len;
  char line[rl_PRINTF_LENGTH],
       name_section[rl_PRINTF_LENGTH],
       name_name[rl_PRINTF_LENGTH],
       name_param[rl_PRINTF_LENGTH];
  rlSection *s, *s_old;

  // delete old content
  s = _firstSection;
  while(s != NULL)
  {
    deleteSectionNames(s);
    s_old = s;
    s = s->nextSection;
    delete s_old;
  }

  // read the file
  _firstSection = new rlSection;      // first section holds names with section name = null_string
  _firstSection->nextSection = NULL;
  _firstSection->firstName = NULL;
  _firstSection->name = new char[1];
  _firstSection->name[0] = '\0';
  fp = fopen(filename,"r");
  if(fp == NULL) return -1;
  name_section[0] = name_name[0] = name_param[0] = '\0';
  while(fgets(line,sizeof(line)-1,fp) != NULL)
  {
    if(line[0] == '[') // section identifier
    {
      copyIdentifier(name_section,line);
      setText(name_section, NULL, NULL);
    }
    else if(line[0] > ' ' && line[0] != '\t' && line[0] != '#') // name identifier
    {
      copyName(name_name,line);
      copyParam(name_param,line);
      setText(name_section, name_name, name_param);
    }
    else // it must be a comment line
    {
      len = strlen(line);
      if(len>0) line[len-1] = '\0';
      setText(name_section, line, NULL);
    }
  }
  fclose(fp);
  return 0;
}

int rlIniFile::write

(

const char *

filename

)

Definition at line 165 of file rlinifile.cpp.

{
  FILE *fp;
  rlSection *s;
  rlSectionName *n;

  fp = fopen(filename,"w");
  if(fp == NULL) return -1;

  s = _firstSection;
  while(s != NULL)
  {
    if     (s->name[0] == '#')  fprintf(fp,"%s\n",s->name);
    else if(s->name[0] == '\0') ;
    else                        fprintf(fp,"[%s]\n",s->name);
    n = s->firstName;
    while(n != NULL)
    {
      if     (n->name[0]  == '#')  fprintf(fp,"%s\n",n->name);
      else if(n->name[0]  == '\0') fprintf(fp,"\n");
      else if(n->param[0] == '\0') fprintf(fp,"\n");
      else                         fprintf(fp,"%s=%s\n",n->name,n->param);
      n = n->nextName;
    }
    s = s->nextSection;
  }

  fclose(fp);
  return 0;
}

const char * rlIniFile::text	(	const char *	section,
		const char *	name
	)

Definition at line 196 of file rlinifile.cpp.

{
  rlSection *s;
  rlSectionName *n;

  s = _firstSection;
  while(s != NULL)
  {
    if(strcmp(section,s->name) == 0)
    {
      n = s->firstName;
      while(n != NULL)
      {
        if(n->name != NULL && strcmp(name,n->name) == 0)
        {
          return n->param;
        }
        n = n->nextName;
      }
      return null_string;
    }
    s = s->nextSection;
  }
  return null_string;
}

void rlIniFile::setText	(	const char *	section,
		const char *	name,
		const char *	text
	)

Definition at line 222 of file rlinifile.cpp.

{
  rlSection *s, *last_section;
  rlSectionName *n, *last_name;

  if(section == NULL) return;
  last_section = NULL;
  last_name = NULL;
  s = _firstSection;
  while(s != NULL)
  {
    if(strcmp(section,s->name) == 0)
    {
      last_name = NULL;
      n = s->firstName;
      while(n != NULL)
      {
        if(name != NULL && name[0] != '#' && name[0] != '\0' && strcmp(name,n->name) == 0)
        {
          if(n->param != NULL) delete [] n->param;
          if(text == NULL)
          {
            n->param = new char[1];
            n->param[0] = '\0';
          }
          else
          {
            n->param = new char[strlen(text)+1];
            strcpy(n->param,text);
          }
          return;
        }
        last_name = n;
        n = n->nextName;
      }
      if(last_name == NULL)
      {
        s->firstName = new rlSectionName;
        n = s->firstName;
      }
      else
      {
        last_name->nextName = new rlSectionName;
        n = last_name->nextName;
      }
      if(name == NULL)
      {
        n->name = new char[1];
        n->name[0] = '\0';
      }
      else
      {
        n->name = new char[strlen(name)+1];
        strcpy(n->name,name);
      }
      if(text == NULL)
      {
        n->param = new char[1];
        n->param[0] = '\0';
      }
      else
      {
        n->param = new char[strlen(text)+1];
        strcpy(n->param,text);
      }
      n->nextName = NULL;
      return;
    }
    last_section = s;
    s = s->nextSection;
  }
  if(last_section == NULL)
  {
    _firstSection = new rlSection;
    last_section = _firstSection;
  }
  else
  {
    last_section->nextSection = new rlSection;
    last_section = last_section->nextSection;
  }
  last_section->name = new char[strlen(section)+1];
  strcpy(last_section->name,section);
  last_section->nextSection = NULL;
  if(name == NULL)
  {
    last_section->firstName = NULL;
  }
  else
  {
    last_section->firstName = new rlSectionName;
    n = last_section->firstName;
    n->name = new char[strlen(name)+1];
    strcpy(n->name,name);
    if(text == NULL)
    {
      n->param = new char[1];
      n->param[0] = '\0';
    }
    else
    {
      n->param = new char[strlen(text)+1];
      strcpy(n->param,text);
    }
    n->nextName = NULL;
  }
  return;
}

int rlIniFile::printf	(	const char *	section,
		const char *	name,
		const char *	format,
			...
	)

Definition at line 331 of file rlinifile.cpp.

{
  int ret;
  char buf[rl_PRINTF_LENGTH]; // should be big enough
  
  va_list ap;
  va_start(ap,format);
  ret = rlvsnprintf(buf, rl_PRINTF_LENGTH - 1, format, ap);
  va_end(ap);
  if(ret > 0) setText(section, name, buf);
  return ret;
}

void rlIniFile::remove

(

const char *

section

)

Definition at line 344 of file rlinifile.cpp.

{
  rlSection *s, *last;

  last = NULL;
  s = _firstSection;
  while(s != NULL)
  {
    if(strcmp(section,s->name) == 0)
    {
      deleteSectionNames(s);
      if(last != NULL) last->nextSection = s->nextSection;
      delete s;
      return;
    }
    last = s;
    s = s->nextSection;
  }
}

void rlIniFile::remove	(	const char *	section,
		const char *	name
	)

Definition at line 364 of file rlinifile.cpp.

{
  rlSection *s;
  rlSectionName *n, *last;

  s = _firstSection;
  while(s != NULL)
  {
    if(strcmp(section,s->name) == 0)
    {
      last = NULL;
      n = s->firstName;
      while(n != NULL)
      {
        if(strcmp(name,n->name) == 0)
        {
          if(n->name  != NULL) delete [] n->name;
          if(n->param != NULL) delete [] n->param;
          if(last != NULL) last->nextName = n->nextName;
          delete n;
          return;
        }
        last = n;
        n = n->nextName;
      }
      return;
    }
    s = s->nextSection;
  }
}

const char * rlIniFile::firstSection

(

)

Definition at line 395 of file rlinifile.cpp.

{
  currentSection = 0;
  return _firstSection->name;
}

const char * rlIniFile::nextSection

(

)

Definition at line 401 of file rlinifile.cpp.

{  
  rlSection *s;
  int i;
    
  if(currentSection < 0) return NULL;
  currentSection++;
  i = 0;
  s = _firstSection;
  while(s != NULL)
  {
    if(i == currentSection) return s->name;
    s = s->nextSection;
    i++;
  }
  currentSection = -1;
  return NULL;
}

const char * rlIniFile::firstName

(

const char *

section

)

Definition at line 420 of file rlinifile.cpp.

{
  rlSection *s;
  rlSectionName *n;

  s = _firstSection;
  while(s != NULL)
  {
    if(strcmp(section,s->name) == 0)
    {
      n = s->firstName;
      currentName = 0;
      return n->name;
    }
    s = s->nextSection;
  }
  return NULL;
}

const char * rlIniFile::nextName

(

const char *

section

)

Definition at line 439 of file rlinifile.cpp.

{
  rlSection *s;
  rlSectionName *n;
  int i;
  
  if(currentName < 0) return NULL;
  currentName++;
  i = 0;
  s = _firstSection;
  while(s != NULL)
  {
    if(strcmp(section,s->name) == 0)
    {
      n = s->firstName;
      while(n != NULL)
      {
        if(i == currentName) return n->name;
  i++;
        n = n->nextName;
      }
      return NULL;
    }
    s = s->nextSection;
  }
  return NULL;
}

void rlIniFile::copyIdentifier	(	char *	buf,
		const char *	line
	)			[private]

Definition at line 70 of file rlinifile.cpp.

{
  int i = 1;
  buf[0] = '\0';
  if(line[0] != '[') return;
  while(line[i] != ']' && line[i] != '\0')
  {
    *buf++ = line[i++];
  }
  *buf = '\0';
}

void rlIniFile::copyName	(	char *	buf,
		const char *	line
	)			[private]

Definition at line 82 of file rlinifile.cpp.

{
  int i = 0;
  buf[0] = '\0';
  //while(line[i] > ' ' && line[i] != '=')
  while(line[i] != '\0' && line[i] != '=')
  {
    *buf++ = line[i++];
  }
  *buf = '\0';
  i--; // eventually delete spaces
  while(i>=0 && (buf[i] == ' ' || buf[i] == '\t'))
  {
    buf[i--] = '\0';
  } 
}

void rlIniFile::copyParam	(	char *	buf,
		const char *	line
	)			[private]

Definition at line 99 of file rlinifile.cpp.

{
  char *cptr;
  buf[0] = '\0';
  cptr = strchr(line,'=');
  if(cptr == NULL) return;
  cptr++;
  while((*cptr == ' ' || *cptr == '\t') && *cptr != '\0') cptr++;
  if(*cptr == '\0') return;
  while(*cptr != '\0' && *cptr != '\n') *buf++ = *cptr++;
  *buf = '\0';
}

void rlIniFile::deleteSectionNames

(

rlSection *

section

)

[private]

Definition at line 53 of file rlinifile.cpp.

{
  rlSectionName *name, *last_name;

  if(section == NULL) return;
  name = section->firstName;
  while(name != NULL)
  {
    if(name->name  != NULL) delete [] name->name;
    if(name->param != NULL) delete [] name->param;
    last_name = name;
    name = name->nextName;
    delete [] last_name;
  }
  if(section->name != NULL) delete [] section->name;
}

---

Member Data Documentation

rlSection* rlIniFile::_firstSection [private]

Definition at line 59 of file rlinifile.h.

int rlIniFile::currentSection [private]

Definition at line 60 of file rlinifile.h.

int rlIniFile::currentName [private]

Definition at line 60 of file rlinifile.h.

---

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

• rlinifile.h
• rlinifile.cpp