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130 lines
4.9 KiB
C
130 lines
4.9 KiB
C
/*****************************************************************************/
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/* */
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/* filetype.c */
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/* */
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/* Determine the type of a file */
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/* */
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/* */
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/* */
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/* (C) 2003 Ullrich von Bassewitz */
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/* Römerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#include <stdlib.h>
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#include <string.h>
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/* common */
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#include "filetype.h"
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#include "fname.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Table that maps extensions to file types. Sorted alphabetically. */
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typedef struct {
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const char Ext[4];
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FILETYPE Type;
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} FileType;
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static const FileType TypeTable[] = {
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/* Upper case stuff for obsolete operating systems */
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{ "A", FILETYPE_LIB },
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{ "A65", FILETYPE_ASM },
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{ "ASM", FILETYPE_ASM },
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{ "C", FILETYPE_C },
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{ "EMD", FILETYPE_O65 },
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{ "GRC", FILETYPE_GR },
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{ "JOY", FILETYPE_O65 },
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{ "LIB", FILETYPE_LIB },
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{ "O", FILETYPE_OBJ },
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{ "O65", FILETYPE_O65 },
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{ "OBJ", FILETYPE_OBJ },
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{ "S", FILETYPE_ASM },
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{ "TGI", FILETYPE_O65 },
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{ "a", FILETYPE_LIB },
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{ "a65", FILETYPE_ASM },
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{ "asm", FILETYPE_ASM },
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{ "c", FILETYPE_C },
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{ "emd", FILETYPE_O65 },
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{ "grc", FILETYPE_GR },
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{ "joy", FILETYPE_O65 },
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{ "lib", FILETYPE_LIB },
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{ "o", FILETYPE_OBJ },
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{ "o65", FILETYPE_O65 },
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{ "obj", FILETYPE_OBJ },
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{ "s", FILETYPE_ASM },
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{ "tgi", FILETYPE_O65 },
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};
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#define FILETYPE_COUNT (sizeof (TypeTable) / sizeof (TypeTable[0]))
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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static int Compare (const void* Key, const void* Type)
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/* Compare function for bsearch */
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{
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return strcmp (Key, ((const FileType*) Type)->Ext);
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}
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FILETYPE GetFileType (const char* Name)
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/* Determine the type of the given file by looking at the name. If the file
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* type could not be determined, the function returns FILETYPE_UNKOWN.
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*/
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{
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const FileType* FT;
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/* Determine the file type by the extension */
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const char* Ext = FindExt (Name);
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/* Do we have an extension? */
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if (Ext == 0) {
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return FILETYPE_UNKNOWN;
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}
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/* Search for a table entry */
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FT = bsearch (Ext+1, TypeTable, FILETYPE_COUNT, sizeof (FileType), Compare);
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/* Return the result */
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return FT? FT->Type : FILETYPE_UNKNOWN;
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}
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