1/*****************************************************************************/
2/* */
3/* input.h */
4/* */
5/* Input file handling */
6/* */
7/* */
8/* */
9/* (C) 2000-2010, 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#ifndef INPUT_H
37#define INPUT_H
38
39
40
41#include <stdio.h>
42
43/* common */
44#include "strbuf.h"
45
46
47
48/*****************************************************************************/
49/* data */
50/*****************************************************************************/
51
52
53
54/* An enum that describes different types of input files. The members are
55** choosen so that it is possible to combine them to bitsets
56*/
57typedef enum {
58 IT_MAIN = 0x01, /* Main input file */
59 IT_SYSINC = 0x02, /* System include file (using <>) */
60 IT_USRINC = 0x04, /* User include file (using "") */
61} InputType;
62
63/* Forward for an IFile structure */
64struct IFile;
65
66/* The current input line */
67extern StrBuf* Line;
68
69/* Current and next input character */
70extern char CurC;
71extern char NextC;
72
73
74
75/*****************************************************************************/
76/* Code */
77/*****************************************************************************/
78
79
80
81void OpenMainFile (const char* Name);
82/* Open the main file. Will call Fatal() in case of failures. */
83
84void OpenIncludeFile (const char* Name, InputType IT);
85/* Open an include file and insert it into the tables. */
86
87void NextChar (void);
88/* Read the next character from the input stream and make CurC and NextC
89** valid. If end of line is reached, both are set to NUL, no more lines
90** are read by this function.
91*/
92
93void ClearLine (void);
94/* Clear the current input line */
95
96StrBuf* InitLine (StrBuf* Buf);
97/* Initialize Line from Buf and read CurC and NextC from the new input line.
98** The function returns the old input line.
99*/
100
101int NextLine (void);
102/* Get a line from the current input. Returns 0 on end of file. */
103
104const char* GetInputFile (const struct IFile* IF);
105/* Return a filename from an IFile struct */
106
107const char* GetCurrentFile (void);
108/* Return the name of the current input file */
109
110unsigned GetCurrentLine (void);
111/* Return the line number in the current input file */
112
113void CreateDependencies (void);
114/* Create dependency files requested by the user */
115
116
117
118/* End of input.h */
119
120#endif
121