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Added a new input layer that manages the different input formats.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@5559 b7a2c559-68d2-44c3-8de9-860c34a00d81
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uz
2012-02-27 16:33:13 +00:00
parent ca624041a9
commit f0a73e253d
5 changed files with 193 additions and 2 deletions
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106
src/sp65/input.c Normal file
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/*****************************************************************************/
/* */
/* input.c */
/* */
/* Input format/file definitions for the sp65 sprite and bitmap utility */
/* */
/* */
/* */
/* (C) 2012, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
/* common */
#include "fileid.h"
/* sp65 */
#include "error.h"
#include "input.h"
#include "pcx.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
typedef struct InputFormatDesc InputFormatDesc;
struct InputFormatDesc {
/* Read routine */
Bitmap* (*Read) (const char* Name);
};
/* Table with input formats */
static InputFormatDesc InputFormatTable[ifCount] = {
{ ReadPCXFile },
};
/* Table that maps extensions to input formats. Must be sorted alphabetically */
static const FileId FormatTable[] = {
/* Upper case stuff for obsolete operating systems */
{ "PCX", ifPCX },
{ "pcx", ifPCX },
};
/*****************************************************************************/
/* Code */
/*****************************************************************************/
Bitmap* ReadInputFile (const char* Name, InputFormat Format)
/* Read a bitmap from a file and return it. If Format is ifAuto, the routine
* tries to determine the format from the file name extension.
*/
{
/* If the format is Auto, try to determine it from the file name */
if (Format == ifAuto) {
/* Search for the entry in the table */
const FileId* F = GetFileId (Name, FormatTable,
sizeof (FormatTable) / sizeof (FormatTable[0]));
/* Found? */
if (F == 0) {
Error ("Cannot determine file format of input file `%s'", Name);
}
Format = F->Id;
}
/* Check the format just for safety */
CHECK (Format >= 0 && Format < ifCount);
/* Call the format specific read */
return InputFormatTable[Format].Read (Name);
}