al_fopen_slice - Online Linux Manual PageSection : 3
Updated :
Source : Allegro reference manual
Note :

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NAMEal_fopen_slice − Allegro 5 API

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SYNOPSIS #include <allegro5/allegro.h> ALLEGRO_FILE *al_fopen_slice(ALLEGRO_FILE *fp, size_t initial_size, const char *mode)

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DESCRIPTIONOpens a slice (subset) of an already open random access file as if it were a stand alone file. While the slice is open, the parent file handle must not be used in any way. The slice is opened at the current location of the parent file, up through initial_size bytes. The initial_size may be any non−negative integer that will not exceed the bounds of the parent file. Seeking with ALLEGRO_SEEK_SET will be relative to this starting location. ALLEGRO_SEEK_END will be relative to the starting location plus the size of the slice. The mode can be any combination of: • r: read access • w: write access • e: expandable For example, a mode of "rw" indicates the file can be read and written. (Note that this is slightly different from the stdio modes.) Keep in mind that the parent file must support random access and be open in normal write mode (not append) for the slice to work in a well defined way. If the slice is marked as expandable, then reads and writes can happen after the initial end point, and the slice will grow accordingly. Otherwise, all activity is restricted to the initial size of the slice. A slice must be closed with al_fclose(3). The parent file will then be positioned immediately after the end of the slice.

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SINCE5.0.6, 5.1.0

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SEE ALSOal_fopen(3) 0

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