1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include "lint.h"
28 #include "file64.h"
29 #include "mtlib.h"
30 #include <sys/types.h>
31 #include <ctype.h>
32 #include <stdio.h>
33 #include "base_conversion.h"
34 #include <locale.h>
35 #include <thread.h>
36 #include <synch.h>
37 #include "stdiom.h"
38 #include "libc.h"
39
40 /* if the _IOWRT flag is set, this must be a call from sscanf */
41 #define mygetc(iop) ((iop->_flag & _IOWRT) ? \
42 ((*iop->_ptr == '\0') ? EOF : *iop->_ptr++) : \
43 GETC(iop))
44
45 #define myungetc(x, iop) ((iop->_flag & _IOWRT) ? *(--iop->_ptr) : \
46 UNGETC(x, iop))
47
48
49 void
file_to_decimal(char ** ppc,int nmax,int fortran_conventions,decimal_record * pd,enum decimal_string_form * pform,char ** pechar,FILE * pf,int * pnread)50 file_to_decimal(char **ppc, int nmax, int fortran_conventions,
51 decimal_record *pd, enum decimal_string_form *pform,
52 char **pechar, FILE *pf, int *pnread)
53 {
54 char *cp = *ppc - 1; /* last character seen */
55 char *good = cp; /* last character accepted */
56 int current; /* *cp or EOF */
57 int nread = 0; /* number of characters read so far */
58
59 /* if the _IOWRT flag is set, this must be a call from sscanf */
60 #define NEXT \
61 if (nread < nmax) { \
62 current = ((pf->_flag & _IOWRT) ? \
63 ((*pf->_ptr == '\0') ? EOF : *pf->_ptr++) : \
64 GETC(pf)); \
65 if (current != EOF) { \
66 *++cp = (char)current; \
67 nread++; \
68 } \
69 } else { \
70 current = EOF; \
71 }
72
73 NEXT;
74
75 #include "char_to_decimal.h"
76
77 /*
78 * If we read any characters beyond the end of the accepted
79 * token, try to push them back.
80 */
81 if (fortran_conventions < 0) {
82 /* in C99 mode, push back at most one character */
83 if (cp >= *ppc && current != EOF && myungetc(current, pf)
84 != EOF) {
85 cp--;
86 nread--;
87 }
88 } else {
89 while (cp >= *ppc) {
90 if (myungetc((int)(unsigned char)*cp, pf) == EOF)
91 break;
92 cp--;
93 nread--;
94 }
95 }
96
97 *++cp = '\0';
98 *pnread = nread;
99 }
100