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//
// Filename list routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2018 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.php
//
// Wrapper for scandir with const-correct function prototypes.
#include <FL/filename.H>
#include <FL/Fl.H>
#include "Fl_System_Driver.H"
#include <FL/fl_utf8.h>
#include "flstring.h"
#include <stdlib.h>
int fl_alphasort(struct dirent **a, struct dirent **b) {
return strcmp((*a)->d_name, (*b)->d_name);
}
int fl_casealphasort(struct dirent **a, struct dirent **b) {
return strcasecmp((*a)->d_name, (*b)->d_name);
}
/**
Portable and const-correct wrapper for the scandir() function.
For each file in that directory a "dirent" structure is created.
The only portable thing about a dirent is that dirent.d_name is the
nul-terminated file name. A pointers array to these dirent's is created
and a pointer to the array is returned in *list.
The number of entries is given as a return value.
If there is an error reading the directory a number less than zero is
returned, and errno has the reason; errno does not work under Windows.
\b Include:
\code
#include <FL/filename.H>
\endcode
\param[in] d the name of the directory to list. It does not matter if it has a trailing slash.
\param[out] list table containing the resulting directory listing
\param[in] sort sorting functor:
- fl_alphasort: The files are sorted in ascending alphabetical order;
upper and lowercase letters are compared according to their ASCII ordering uppercase before lowercase.
- fl_casealphasort: The files are sorted in ascending alphabetical order;
upper and lowercase letters are compared equally case is not significant.
- fl_casenumericsort: The files are sorted in ascending "alphanumeric" order, where an attempt is made
to put unpadded numbers in consecutive order; upper and lowercase letters
are compared equally case is not significant.
- fl_numericsort: The files are sorted in ascending "alphanumeric" order, where an attempt is made
to put unpadded numbers in consecutive order; upper and lowercase letters are compared
according to their ASCII ordering - uppercase before lowercase.
\return the number of entries if no error, a negative value otherwise.
*/
int fl_filename_list(const char *d, dirent ***list, Fl_File_Sort_F *sort) {
return Fl::system_driver()->filename_list(d, list, sort);
}
/**
\brief Free the list of filenames that is generated by fl_filename_list().
Free everything that was allocated by a previous call to fl_filename_list().
Use the return values as parameters for this function.
\param[in,out] list table containing the resulting directory listing
\param[in] n number of entries in the list
*/
void fl_filename_free_list(struct dirent ***list, int n)
{
if (n<0) return;
int i;
for (i = 0; i < n; i ++) {
if ((*list)[i])
free((*list)[i]);
}
free(*list);
*list = 0;
}
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