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t1stdio.h
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1 /* $XConsortium: t1stdio.h,v 1.4 91/10/10 11:19:49 rws Exp $ */
2 /* Copyright International Business Machines,Corp. 1991
3  * All Rights Reserved
4  *
5  * License to use, copy, modify, and distribute this software
6  * and its documentation for any purpose and without fee is
7  * hereby granted, provided that the above copyright notice
8  * appear in all copies and that both that copyright notice and
9  * this permission notice appear in supporting documentation,
10  * and that the name of IBM not be used in advertising or
11  * publicity pertaining to distribution of the software without
12  * specific, written prior permission.
13  *
14  * IBM PROVIDES THIS SOFTWARE "AS IS", WITHOUT ANY WARRANTIES
15  * OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT
16  * LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT OF
18  * THIRD PARTY RIGHTS. THE ENTIRE RISK AS TO THE QUALITY AND
19  * PERFORMANCE OF THE SOFTWARE, INCLUDING ANY DUTY TO SUPPORT
20  * OR MAINTAIN, BELONGS TO THE LICENSEE. SHOULD ANY PORTION OF
21  * THE SOFTWARE PROVE DEFECTIVE, THE LICENSEE (NOT IBM) ASSUMES
22  * THE ENTIRE COST OF ALL SERVICING, REPAIR AND CORRECTION. IN
23  * NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR
24  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
25  * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
26  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
27  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
28  * SOFTWARE.
29  */
30 /* T1IO FILE structure and related stuff */
31 
32 #include "types.h"
33 
34 #define FILE F_FILE
35 typedef unsigned char F_char;
36 
37 typedef struct F_FILE {
38  F_char *b_base; /* Pointer to beginning of buffer */
39  int32_t b_size; /* Size of the buffer */
40  F_char *b_ptr; /* Pointer to next char in buffer */
41  int32_t b_cnt; /* Number of chars remaining in buffer */
42  F_char flags; /* other flags; != 0 means getc must call fgetc */
43  F_char ungotc; /* Place for ungotten char; flag set if present */
44  short error; /* error status */
45  int fd; /* underlying file descriptor */
47 
48 
49 /* defines for flags */
50 #define UNGOTTENC (0x01)
51 #define FIOEOF (0x80)
52 #define FIOERROR (0x40)
53 
54 #ifndef NULL
55 #define NULL 0 /* null pointer */
56 #endif
57 #define EOF (-1) /* end of file */
58 #define F_BUFSIZ (512)
59 
60 #ifdef fopen
61 #undef fopen
62 #endif
63 
64 #ifdef fclose
65 #undef fclose
66 #endif
67 
68 #ifdef feof
69 #undef feof
70 #endif
71 
72 #ifdef ferror
73 #undef ferror
74 #endif
75 
76 #ifdef fread
77 #undef fread
78 #endif
79 
80 #ifdef getc
81 #undef getc
82 #endif
83 
84 #ifdef ungetc
85 #undef ungetc
86 #endif
87 
88 #ifdef fgetc
89 #undef fgetc
90 #endif
91 
92 #define getc(f) \
93  ( \
94  ( ((f)->b_cnt > 0) && ((f)->flags == 0) ) ? \
95  ( (f)->b_cnt--, (unsigned int)*( (f)->b_ptr++ ) ) : \
96  T1Getc(f) \
97  )
98 
99 extern F_FILE *T1Open(char *, char *), *T1eexec(F_FILE *);
100 extern int T1Close(F_FILE *);
101 extern int T1Read(char *, int, int, F_FILE *),
102  T1Getc(F_FILE *), T1Ungetc(int, F_FILE *);
103 
104 #define fclose(f) T1Close(f)
105 #define fopen(name,mode) T1Open(name,mode)
106 #define ungetc(c,f) T1Ungetc(c,f)
107 #define fgetc(f) T1Getc(f)
108 #define fread(bufP,size,n,f) T1Read(bufP,size,n,f)
109 #define feof(f) (((f)->flags & FIOEOF) && ((f)->b_cnt==0))
110 #define ferror(f) (((f)->flags & FIOERROR)?(f)->error:0)
signed int int32_t
Definition: stdint.h:77
Definition: t1stdio.h:37
int fd
Definition: t1stdio.h:45
F_char flags
Definition: t1stdio.h:42
F_char ungotc
Definition: t1stdio.h:43
int32_t b_size
Definition: t1stdio.h:39
F_char * b_ptr
Definition: t1stdio.h:40
short error
Definition: t1stdio.h:44
F_char * b_base
Definition: t1stdio.h:38
int32_t b_cnt
Definition: t1stdio.h:41
F_FILE * T1Open(char *, char *)
Definition: t1io.c:68
int T1Ungetc(int, F_FILE *)
Definition: t1io.c:115
F_FILE * T1eexec(F_FILE *)
Definition: t1io.c:175
unsigned char F_char
Definition: t1stdio.h:35
int T1Read(char *, int, int, F_FILE *)
Definition: t1io.c:128
int T1Close(F_FILE *)
Definition: t1io.c:166
struct F_FILE F_FILE
int T1Getc(F_FILE *)
Definition: t1io.c:95