1 /*****************************************************************************/
5 /* Determine the id of a file type by extension */
9 /* (C) 2003-2012, Ullrich von Bassewitz */
10 /* Roemerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
45 /*****************************************************************************/
47 /*****************************************************************************/
51 int CompareFileId (const void* Key, const void* Id)
52 /* Compare function used when calling bsearch with a table of FileIds */
54 return strcmp (Key, ((const FileId*) Id)->Ext);
59 const FileId* GetFileId (const char* Name, const FileId* Table, unsigned Count)
60 /* Determine the id of the given file by looking at file extension of the name.
61 * The table passed to the function must be sorted alphabetically. If the
62 * extension is found, a pointer to the matching table entry is returned. If
63 * no matching table entry was found, the function returns NULL.
66 /* Determine the file type by the extension */
67 const char* Ext = FindExt (Name);
69 /* Do we have an extension? */
74 /* Search for a table entry and return it */
75 return bsearch (Ext+1, Table, Count, sizeof (FileId), CompareFileId);