numericsort.c File Reference

#include <ctype.h>
#include <stdlib.h>
#include <FL/platform_types.h>
#include <FL/filename.H>

Functions
int	fl_casenumericsort (struct dirent **A, struct dirent **B)
	Compares directory entries alphanumerically (case-insensitive). More...
int	fl_numericsort (struct dirent **A, struct dirent **B)
	Compares directory entries alphanumerically (case-sensitive). More...

Function Documentation

fl_casenumericsort()

int fl_casenumericsort	(	struct dirent **	A,
		struct dirent **	B
	)

Compares directory entries alphanumerically (case-insensitive).

Note

This comparison is not (yet) UTF-8 aware.

Todo:

Make comparison UTF-8 aware.

See also

fl_numericsort()

fl_numericsort()

int fl_numericsort	(	struct dirent **	A,
		struct dirent **	B
	)

Compares directory entries alphanumerically (case-sensitive).

Numbers are compared without sign, i.e. "-" is not taken as a sign of following numerical values. The following list of files would be in ascending order (examples are ASCII and numbers only for simplicity):

1. 1zzz.txt
2. 2xxx.txt
3. 19uuu.txt
4. 100aaa.txt
5. file1z.txt
6. file5a.txt
7. file5z.txt
8. file30z.txt
9. file200a.txt
10. temp+5.txt ('+' is lexically lower than '-')
11. temp-5.txt ('-' is not a sign)
12. temp-100.txt (100 is bigger than 5, no sign)

Parameters

[in]	A	first directory entry
[in]	B	second directory entry

Returns

comparison result (-1, 0, or +1)

Return values

-1	A < B
0	A == B
+1	A > B

Note

This comparison is not (yet) UTF-8 aware:

• UTF-8 characters are compared according to their binary values.
• Locale settings may influence the result in unexpected ways.
• The latter is particularly true for fl_casenumericsort(). This may be changed in a future release.

Todo:

Make comparison UTF-8 aware.

See also

fl_casenumericsort()