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Move evaluation of attributes into the input routine.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@5592 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz
2012-03-10 20:26:47 +00:00
parent 44c70d01cb
commit 1a7b115b3c
5 changed files with 51 additions and 79 deletions
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72
src/sp65/input.c
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@@ -39,6 +39,7 @@
#include "fileid.h"
/* sp65 */
#include "attr.h"
#include "error.h"
#include "input.h"
#include "pcx.h"
@@ -51,15 +52,19 @@
typedef struct InputFormatDesc InputFormatDesc;
struct InputFormatDesc {
/* Read routine */
Bitmap* (*Read) (const char* Name);
/* Possible input formats */
enum InputFormat {
ifPCX, /* PCX */
ifCount /* Number of actual input formats w/o ifAuto*/
};
/* Table with input formats */
typedef struct InputFormatDesc InputFormatDesc;
struct InputFormatDesc {
/* Read routine */
Bitmap* (*Read) (const Collection*);
};
/* Table with input formats indexed by InputFormat */
static InputFormatDesc InputFormatTable[ifCount] = {
{ ReadPCXFile },
};
@@ -80,46 +85,39 @@ static const FileId FormatTable[] = {
int FindInputFormat (const char* Name)
/* Find an input format by name. The function returns a value less than zero
* if Name is not a known input format.
Bitmap* ReadInputFile (const Collection* A)
/* Read a bitmap from a file and return it. Format, file name etc. must be
* given as attributes in A. If no format is given, the function tries to
* autodetect it by using the extension of the file name.
*/
{
/* Search for the entry in the table. */
const FileId* F = bsearch (Name,
FormatTable,
sizeof (FormatTable) / sizeof (FormatTable[0]),
sizeof (FormatTable[0]),
CompareFileId);
const FileId* F;
/* Return the id or an error code */
return (F == 0)? -1 : F->Id;
}
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]));
/* Get the file format from the command line */
const char* Format = GetAttrVal (A, "format");
if (Format != 0) {
/* Format is given, search for it in the table. */
F = bsearch (Format,
FormatTable,
sizeof (FormatTable) / sizeof (FormatTable[0]),
sizeof (FormatTable[0]),
CompareFileId);
if (F == 0) {
Error ("Unknown input format `%s'", Format);
}
} else {
/* No format given, use file name extension */
const char* Name = NeedAttrVal (A, "name", "write");
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);
return InputFormatTable[F->Id].Read (A);
}