]> git.sur5r.net Git - cc65/blob - src/sp65/input.c
Added parsing of arguments to --read. The explicit format spec is currently
[cc65] / src / sp65 / input.c
1 /*****************************************************************************/
2 /*                                                                           */
3 /*                                  input.c                                  */
4 /*                                                                           */
5 /*   Input format/file definitions for the sp65 sprite and bitmap utility    */
6 /*                                                                           */
7 /*                                                                           */
8 /*                                                                           */
9 /* (C) 2012,      Ullrich von Bassewitz                                      */
10 /*                Roemerstrasse 52                                           */
11 /*                D-70794 Filderstadt                                        */
12 /* EMail:         uz@cc65.org                                                */
13 /*                                                                           */
14 /*                                                                           */
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.                                    */
18 /*                                                                           */
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:                            */
22 /*                                                                           */
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              */
30 /*    distribution.                                                          */
31 /*                                                                           */
32 /*****************************************************************************/
33
34
35
36 /* common */
37 #include "fileid.h"
38
39 /* sp65 */
40 #include "error.h"
41 #include "input.h"
42 #include "pcx.h"
43
44
45
46 /*****************************************************************************/
47 /*                                   Data                                    */
48 /*****************************************************************************/
49
50
51
52 typedef struct InputFormatDesc InputFormatDesc;
53 struct InputFormatDesc {
54
55     /* Read routine */
56     Bitmap* (*Read) (const char* Name);
57
58 };
59
60 /* Table with input formats */
61 static InputFormatDesc InputFormatTable[ifCount] = {
62     {   ReadPCXFile     },
63 };
64
65 /* Table that maps extensions to input formats. Must be sorted alphabetically */
66 static const FileId FormatTable[] = {
67     /* Upper case stuff for obsolete operating systems */
68     {   "PCX",  ifPCX           },
69
70     {   "pcx",  ifPCX           },
71 };
72
73
74
75 /*****************************************************************************/
76 /*                                   Code                                    */
77 /*****************************************************************************/
78
79
80
81 int FindInputFormat (const char* Name)
82 /* Find an input format by name. The function returns a value less than zero
83  * if Name is not a known input format.
84  */
85 {
86     /* Search for the entry in the table */
87     const FileId* F = GetFileId (Name, FormatTable,
88                                  sizeof (FormatTable) / sizeof (FormatTable[0]));
89     return (F == 0)? -1 : F->Id;
90 }
91
92
93
94 Bitmap* ReadInputFile (const char* Name, InputFormat Format)
95 /* Read a bitmap from a file and return it. If Format is ifAuto, the routine
96  * tries to determine the format from the file name extension.
97  */
98 {
99     /* If the format is Auto, try to determine it from the file name */
100     if (Format == ifAuto) {
101         /* Search for the entry in the table */
102         const FileId* F = GetFileId (Name, FormatTable,
103                                      sizeof (FormatTable) / sizeof (FormatTable[0]));
104         /* Found? */
105         if (F == 0) {
106             Error ("Cannot determine file format of input file `%s'", Name);
107         }
108         Format = F->Id;
109     }
110
111     /* Check the format just for safety */
112     CHECK (Format >= 0 && Format < ifCount);
113
114     /* Call the format specific read */
115     return InputFormatTable[Format].Read (Name);
116 }
117
118
119