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core: add get_picture_idx() function

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A function that gets the index of a picture in a picture table
given its filename. Since we are going to identify pictures by
their filename, we will need this function in the undo code.

Use the function in the remove_picture() function.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2020-04-14 19:08:49 +02:00 • committed by Dirk Hohndel
parent 4e25912fd3
commit db24f16686
2 changed files with 15 additions and 7 deletions
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core/picture.h
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@ -34,6 +34,7 @@ extern void add_to_picture_table(struct picture_table *, int idx, struct picture
extern void copy_pictures(const struct picture_table *s, struct picture_table *d);
extern void add_picture(struct picture_table *, struct picture newpic);
extern bool remove_picture(struct picture_table *, const char *filename);
extern int get_picture_idx(const struct picture_table *, const char *filename); /* Return -1 if not found */
#ifdef __cplusplus
}